USACE / NAVFAC / AFCESA / NASA UFGS-21 13 20.00 20 (April 2006)
------------------------------
Preparing Activity: NAVFAC Replacing without change
UFGS-13956N (September 1999)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 21 13 20.00 20
FOAM FIRE EXTINGUISHING FOR AIRCRAFT HANGARS
04/06
NOTE: This guide specification covers the requirements for automatic deluge,
and pre-action fire extinguishing foam systems for aircraft hangars.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: For fuel tank farm protection use Section 21 13 21.00 20 FOAM FIRE EXTINGUISHING
FOR FUEL TANK PROTECTION. For hazardous and flammable handling and storage facilities
such as truck or rail loading/unloading racks, hazardous/flammable liquid warehouses,
fuel pump houses and laboratories, use Section 21 13 22.00 20 FOAM FIRE EXTINGUISHING
FOR HAZ/FLAM MATERIAL FACILITY. Choose the type of system most appropriate
for the hazard. Deluge systems are primarily intended for fire protection of
aircraft hangar facilities. Pre-action systems may be required for Air Force
hangars even though NFPA 409 recommends deluge systems for aircraft hangars.
Consult the current edition of AFR 88-15, "Criteria and Standards for Air Force
Construction" for Air Force projects. Pre-action systems provide added safety
against accidental discharge by requiring both actuation of a detector and fusing
of a sprinkler head before foam discharge will occur. Deluge systems provide
the fastest fire extinguishment. Areas larger than 279 sq meters 3,000 square
feet and all deluge systems must be hydraulically designed for uniform distribution.
Assure that up to date reliable hydraulic data is used in design of the project.
Do not show sprinkler piping layout and heads on project drawings. System requirements
must conform to the current edition of Unified Facilities Criteria (UFC) 3-600-01
Design: Fire Protection Engineering for Facilities.
NOTE: If there are questions concerning type of foam systems required, consult
the Engineering Field Division, Naval Facilities Engineering Command.
NOTE: The following information shall be shown on the project drawings:
1. Location and detail of each foam system supply riser, deluge, or pre-action
valve, water motor alarm, fire department inlet connection, foam hydrant, hand
hose station, monitor nozzle, air compressor(s), and associated electrical connections.
2. Point of connection to the existing water distribution system.
3. Location of foam system control valves and post indicator valves.
4. Area(s) of foam system coverage, with zone designations (if multiple zones).
Do not show piping layout.
5. Location and design of draft curtains as required by NFPA 409 for aircraft
hangar.
6. For pipe larger than 305 mm 12 inches, detail methods of anchoring pipe
including pipe clamps and tie rods.
7. Location of foam proportioning equipment and storage tank.
8. Show locations of control panel, annunciator(s), alarm devices, manual actuation
stations, point of connection to the building fire evacuation alarm system,
remote trouble device, point of connection to the incoming power supply and
fusible safety switch. Do not show conduit sizes or number of conductors for
DC circuits. Do not show locations of detectors.
9. Show single line riser diagram for all detection, activation, and alarm
circuits. Connection of equipment shall be indicated by circuit runs and not
conduit runs. Do not indicate number and size of conductors for interconnection
of fire alarm components.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[AMERICAN WATER WORKS ASSOCIATION (AWWA)AWWA C500(2002; R 2003) Metal-Seated Gate Valves for Water Supply ServiceAWWA C651(2005; Errata 2005) Standard for Disinfecting Water Mains][ASTM INTERNATIONAL (ASTM)ASTM A 53/A 53M(2007) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless][FM GLOBAL (FM)FM P7825(2005) Approval Guide][FOUNDATION FOR CROSS-CONNECTION CONTROL AND HYDRAULIC RESEARCH (FCCCHR)FCCCHR List(continuously updated) List of Approved Backflow Prevention Assemblies][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 11(2005; Amendment 1 2006; Amendment 2 2007) Low-, Medium- and High- Expansion Foam SystemsNFPA 13(2006; Errata 2007; Amendment 1 2008) Installation of Sprinkler SystemsNFPA 14(2006) Standard for the Installation of Standpipe, Private Hydrants and Hose SystemsNFPA 15(2006) Water Spray Fixed Systems for Fire ProtectionNFPA 16(2006) Installation of Foam-Water Sprinkler and Foam-Water Spray SystemsNFPA 24(2006) Standard for the Installation of Private Fire Service Mains and Their AppurtenancesNFPA 30(2007; Errata 2008) Flammable and Combustible Liquids CodeNFPA 409(2004; TIA 2005; TIA 2006) Standard on Aircraft HangersNFPA 70(2007; AMD 1 2008) National Electrical Code - 2008 EditionNFPA 72(2006) National Fire Alarm Code][THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)SSPC Paint 22(1982; E 2004) Paint Specification No. 22 Epoxy-Polyamide Paints (Primer, Intermediate, and Topcoat)SSPC Paint 25(1997; E 2004) Paint Specification No. 25Zinc Oxide, Alkyd, Linseed Oil Primer for Use Over Hand Cleaned Steel Type I and Type IISSPC SP 11(1987; E 2004) Power Tool Cleaning to Bare MetalSSPC SP 3(2004; E 2004) Power Tool CleaningSSPC SP 6(7) Commercial Blast Cleaning][U.S. DEPARTMENT OF DEFENSE (DOD)MIL-F-24385(Rev F; Am 1) Fire Extinguishing Agent, Aqueous Film Forming Foam (AFFF) Liquid Concentrate, for Fresh and SeawaterMIL-P-24441(Rev C; Supp 1; INT Am 1) Paint, Epoxy-Polyamide][U.S. GENERAL SERVICES ADMINISTRATION (GSA)FS A-A-2962(Rev J) Enamel, Alkyd, Gloss, Low VOC ContentFS A-A-58092(Basic) Tape, Antiseize, PolytetrafluoroethyleneFS WW-S-2739(Basic) Strainers, Sediment: Pipeline, Water, Air, Gas, Oil, or Steam][UNDERWRITERS LABORATORIES (UL)UL 262(2004) Standard for Gate Valves for Fire-Protection ServiceUL 789(2004; Rev thru Aug 2008) Indicator Posts for Fire-Protection ServiceUL Fire Prot Dir(2008) Fire Protection Equipment Directory]1.2 DEFINITION
a. Year 2000 compliant - means computer controlled facility components that accurately process
date and time data (including, but not limited to, calculating, comparing, and sequencing) from,
into, and between the twentieth and twenty-first centuries, and the years 1999 and 2000 and
leap year calculations.
1.3 RELATED REQUIREMENTS
Section 23 03 00.00 20 BASIC MECHANICAL MATERIALS AND METHODS, applies to this section, with the additions and
modifications specified herein.
1.4 SYSTEM DESCRIPTION
1.4.1 Design Requirements
NOTE: Identify the rooms, spaces or areas, as appropriate, which are to be
protected by each system.
NOTE: Include only those NFPA codes applicable to the specific project.
Design and [provide a new] [and] [modify an existing] automatic aqueous film forming foam (AFFF) [deluge] [pre-action]
sprinkler system(s) [and under-wing supplemental protection system] for [_____]. System shall provide uniform
distribution of AFFF solution to provide complete coverage throughout the [building] [areas indicated]. The
design, equipment, materials, installation, and workmanship shall be in strict accordance with the required and
advisory provisions of NFPA 11, NFPA 13, [NFPA 14,] [NFPA 15,] NFPA 16, [NFPA 24,] [NFPA 30,] NFPA 70, NFPA 72
, and NFPA 409, except as modified herein. Each system [shall be designed for earthquakes and] shall include
all materials, accessories and equipment necessary to provide each system complete and ready for use. Design
and install each system to give full consideration to blind spaces, piping, electrical equipment, ductwork, and
all other construction and equipment to provide complete coverage in accordance with the drawings to be submitted
for approval. Devices and equipment for fire protection service shall be of a make and type listed by the Underwriter's
Laboratories Inc. in the UL Fire Prot Dir, or approved by the Factory Mutual System and listed in FM P7825.
In the publications referred to herein, the advisory provisions shall be considered to be mandatory, as though
the word "shall" had been substituted for "should" wherever it appears; reference to the "authority having jurisdiction"
shall be interpreted to mean the [[_____] Division, Naval Facilities Engineering Command Fire Protection Engineer]
[Corps of Engineers Contracting Officer]. Begin work at the point indicated.
1.4.1.1 Shop Drawings
Prepare shop drawings for fire extinguishing system in accordance with the requirements for "Plans" as specified
in NFPA 11 and "Working Plans" as specified in NFPA 13. Each drawing shall be A1 841 x 594 mm 34 by 22 inches
. Do not commence work until the design of each system and the various components have been approved. Show:
a. Room, space or area layout and include data essential to the proper installation of each
system
b. Sprinkler heads, discharge nozzles and system piping layout annotated with reference points
for design calculations
c. Field wiring diagrams showing locations of devices and points of connection and terminals
used for all electrical field connections in the system, with wiring color code scheme
[d. UV-IR detector manufacturer's recommended detector layout (plan view) including horizontal
and vertical angles for correct aiming].
1.4.1.2 Calculations
Submit design calculations for the system.
a. Hydraulic calculations showing basis for design in accordance with NFPA 11 and NFPA 13.
b. Pressure discharge graphs or tables showing pressure discharge relationship for sprinkler
heads and discharge nozzles.
NOTE: Regarding the text below, consult with the Division Fire Protection Engineer
before specifying 2-wire smoke detectors as a Contractor option. 2-wire detectors
must be carefully matched to the control panel by the manufacturer, and are
not universally interchangeable between systems for maintenance purposes.
c. Substantiating battery standby power requirements calculationsshowing battery capacity,
supervisory and alarm power requirements. [If 2-wire smoke detectors are proposed for use show
comparison of the detector power requirements per zone versus the control panel smoke detector
power output per zone in both the standby and alarm modes.]
NOTE: Include the text below for Air Force Projects only.
[d. System surge analysis showing surge pressure occurring throughout the system at both design
flow and nonflow conditions.]
1.4.1.3 AFFF Containment and Disposal Plan
Submit AFFF containment and disposal plan as required under paragraph entitled "Environmental Protection."
1.4.1.4 As-Built Drawings for the Fire Extinguishing System
Upon completion, and before final acceptance of the work, submit a complete set of as-built drawings for the
fire extinguishing system [, including complete as-built circuit diagrams,]. Submit A1 841 x 594 mm 34 by 22
inch reproducible as-built drawings on mylar film with 200 by 100 mm 8 by 4 inch title block similar to contract
drawings. Submit as-built drawings in addition to the record drawings required by Division 1.
1.4.2 System Operation
Flow of water and AFFF shall be controlled by [deluge] [pre-action] valves. Foam proportioning equipment shall
activate automatically upon tripping of the [deluge] [pre-action] valve(s) for the corresponding foam system(s).
[Deluge] [Pre-action] valves shall be tripped by independent detection systems. No valve will be operated by
the building fire evacuation alarm system. Use of motor-operated valves is prohibited. Once activated, system(s)
shall operate until shut down manually. Provide separate circuits from the control panel to each zone of initiating
devices. Transmission of signals from more than one zone over a common circuit is prohibited.
1.4.2.1 Overhead Systems
Overhead systems shall be controlled by [deluge] [pre-action] valves operated by automatic detection systems
and by remote manual release stations.
1.4.2.2 Monitor System
Monitor nozzles shall be controlled by deluge valves operated by [the automatic detection systems and manual
release stations which activate the corresponding overhead system(s)] [independent ultraviolet-infrared (UV-IR)
optical detection systems and manual stations] [flow of AFFF solution in the overhead system].
1.4.2.3 Hose System
Hose reels shall be controlled by deluge valves operated by remote manual release stations, separate from those
used for overhead systems and monitor nozzles.
1.5 SUBMITTALS
NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] The following shall
be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
[The fire protection engineer, [_____] Division, Naval Facilities Engineering Command will review any approve
all submittals in this section requiring Government approval.]
NOTE: For projects administered by the Pacific Division, Naval Facilities Engineering
Command, use the optional "SUBMITTALS" article immediately below and delete
the general "SUBMITTALS" article above.
[The [_____] Division, Naval Facilities Engineering Command, Fire Protection Engineer delegates the authority
to the Quality Control (QC) Representative's U.S. Registered Fire Protection Engineer for review and approval
of submittals required by this section. Submit to the [_____] Division, Naval Facilities Engineering Command,
Fire Protection Engineer one set of all approved submittals and drawings immediately after approval but no more
later than 15 working days prior to final inspection.]
SD-02 Shop Drawings
Fire extinguishing system[; G][; G, [_____]]
SD-03 Product Data
Pipe, fittings, and mechanical couplings[; G][; G, [_____]]
[Deluge] [Pre-action] valves[; G][; G, [_____]]
Valves, including gate, check, and globe[; G][; G, [_____]]
Water motor alarms[; G][; G, [_____]]
Sprinkler heads[; G][; G, [_____]]
Monitor nozzles[; G][; G, [_____]]
Hose and nozzles[; G][; G, [_____]]
Pipe hangers and supports[; G][; G, [_____]]
Pressure switch[; G][; G, [_____]]
Fire department inlet connections[; G][; G, [_____]]
Tank mounted air compressor[; G][; G, [_____]]
Air pressure regulating device[; G][; G, [_____]]
Air compressor (pneumatic detection system)[; G][; G, [_____]]
Low air pressure trouble alarm[; G][; G, [_____]]
Detection devices[; G][; G, [_____]]
Storage batteries[; G][; G, [_____]]
Alarm bells[; G][; G, [_____]]
Alarm horns[; G][; G, [_____]]
Annunciator panel[; G][; G, [_____]]
Foam hydrants[; G][; G, [_____]]
AFFF concentrate storage tanks[; G][; G, [_____]]
Proportioning equipment[; G][; G, [_____]]
AFFF concentrate[; G][; G, [_____]]
[Strainers[; G][; G, [_____]]]
Manual release stations[; G][; G, [_____]]
Backflow preventers[; G][; G, [_____]]
Control panel[; G][; G, [_____]]
Battery charger[; G][; G, [_____]]
Data which describe more than one type of item shall be clearly marked to indicate which type
the Contractor intends to provide. Submit only originals. Photocopies will not be accepted.
Partial submittals will not be accepted.
SD-05 Design Data
Hydraulic calculations[; G][; G, [_____]]
Pressure discharge graphs or tables[; G][; G, [_____]]
Battery standby power requirements calculations[; G][; G, [_____]]
[System surge analysis[; G][; G, [_____]]]
SD-06 Test Reports
NOTE: Consult with the Division Fire Protection Engineer before specifying
2-wire smoke detectors as a Contractor option. 2-wire detectors must be carefully
matched to the control panel by the manufacturer, and are not universally interchangeable
between systems for maintenance purposes.
Open-area (Spot-Type) 2-wire smoke detectors[; G][; G, [_____]]
Submit copies of UL listing or FM approval data showing compatibility of the smoke detector
model being provided with the control panel being provided, if 2-wire detectors are proposed
for use.
Preliminary tests[; G][; G, [_____]]
Acceptance tests[; G][; G, [_____]]
Submit for all inspections and tests specified under paragraph entitled "Field Quality Control."
Hydrostatic testing of the diaphragm pressure proportioning tanks[; G][; G, [_____]]
SD-07 Certificates
Qualifications of installer[; G][; G, [_____]]
Submit installers qualifications as required under paragraph entitled Qualifications of Installer."
AFFF containment and disposal plan[; G][; G, [_____]]
Backflow preventers; G
SD-10 Operation and Maintenance Data
[Deluge] [Pre-action] valves, Data Package 3[; G][; G, [_____]]
Tank mounted air compressor, Data Package 3[; G][; G, [_____]]
Proportioning equipment, Data Package 3[; G][; G, [_____]]
Control panel, Data Package 3[; G][; G, [_____]]
AFFF concentrate storage tanks, Data Package 3[; G][; G, [_____]]
Monitor nozzles, Data Package 3[; G][; G, [_____]]
Instructions for operating the fire extinguishing system, Data Package 4[; G][; G, [_____]]
Submit in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA. Furnish one complete
set of data prior to the time that final acceptance tests are performed, and furnish the remaining
sets before the contract is completed.
SD-11 Closeout Submittals
As-built drawings for the fire extinguishing system[; G][; G, [_____]]
1.6 QUALITY ASSURANCE
1.6.1 Qualifications of Installer
Prior to commencing work, submit data showing that the Contractor has successfully installed automatic foam fire
extinguishing sprinkler systems of the same type and design as specified herein, or that he has a firm contractual
agreement with a subcontractor having the required experience. Include the names and locations of at least two
installations where the Contractor, or the subcontractor referred to above, has installed such systems. Indicate
the type and design of each system, and certify that the system has performed satisfactorily for a period of
at least 18 months.
NOTE: For projects administered by the Pacific Division, Naval Facilities Engineering
Command, include the following optional paragraph requiring the minimum qualification
of a NICET Level-III technician for preparation of all fire protection system
drawings.
[Qualifications of System Technician: Installation drawings, shop drawing and as-built drawings shall be prepared,
by or under the supervision of, an individual who is experienced with the types of works specified herein, and
is currently certified by the National Institute for Certification in Engineering Technologies (NICET) as an
engineering technician with minimum Level-III certification in Special Hazard System program. Contractor shall
submit data for approval showing the name and certification of all involved individuals with such qualifications
at or prior to submittal of drawings.]
1.7 SPARE PARTS
Furnish the following spare parts:
a. 2 of each type of detector installed.
b. 1 of each type of audible and/or visual alarm device installed.
c. 2 of each type of fuse required by the system.
d. 5 complete sets of system keys.
PART 2 PRODUCTS
2.1 DESIGN OF FOAM SYSTEMS
Design of [deluge] [pre-action] fire extinguishing foam systems shall be by hydraulic calculations for uniform
distribution of AFFF solution over the protected area and shall conform to the NFPA standards listed above and
to the requirements as specified herein.
2.1.1 Sprinkler Heads
Heads shall have 15 [or 13.50] mm 1/2 [or 17/32] inch orifice. No o-rings will be permitted in sprinkler heads.
[For deluge systems, provide open heads.] [For pre-action systems, the release element of each head shall be
of the ["intermediate"] ["high"] temperature rating or higher as suitable for the individual location installed.]
Provide chromium plated ceiling plates and pendent sprinklers below suspended ceilings. Provide corrosion resistant
sprinkler heads and sprinkler head guards as required by NFPA 13.
2.1.2 Cabinet
NOTE: Deluge systems do not require a sprinkler head cabinet.
Provide extra sprinkler heads and sprinkler head wrench in a metal cabinet adjacent to the pre-action valve within
each building. The number and types of extra sprinkler heads shall be as specified in NFPA 13.
2.1.3 [Deluge] [Pre-Action] Valves
Valves shall be operated by a detection system listed for releasing service and independent of the building fire
alarm system. [[Deluge] [Pre-action] valve clappers shall incorporate a latching mechanism that will not be
affected by changes of pressure in the water system.] If 150 mm 6 inch valves are used in 200 mm 8 inch risers,
provide smoothly tapered connections. In addition to automatic operation, arrange each valve for manual release
at the valve. Provide pressure gages and other appurtenances at the [deluge] [pre-action] valves as required
by NFPA 13. Provide a detection device at the end of each actuation circuit to test the circuit and mount the
device [adjacent to the valve] between 1.80 and 2.40 meters 6 and 8 feet above the finish floor. Label each
testing device to indicate the valve it activates. [Provide remote manual releases [at [_____]] [where shown].]
2.1.4 AFFF Solution Distribution
NOTE: Select the first option for pre-action systems. Select the second option
for deluge systems.
[Distribution shall be essentially uniform throughout the area in which it is assumed the sprinkler heads will
open. Variation in discharge from individual heads in the hydraulically most remote area shall be between 100
and 115 percent of the specified density.]
[Distribution shall be essentially uniform throughout the area. Variation in discharge from individual heads
shall be between 100 and 115 percent of the specified density.]
2.1.5 AFFF Solution Application Density
Size system to provide the specified density when the system is discharging the specified total maximum required
flow. Application to horizontal surfaces below the ceiling sprinklers shall be 110 mL/sec per sq meter 0.16
gallons per minute (gpm) per square foot with simultaneous operation of [_____] operating foam monitor nozzles,
[and] [_____] operating foam hose lines[, and with outside water hose stream requirements of [_____] mL/sec gpm
].
2.1.6 Sprinkler Discharge Area
NOTE: Select the first option for pre-action systems only and refer to MIL-HDBK-1008
and the appropriate NFPA standard(s) governing the particular facility to determine
the discharge area required. Select the second option for deluge systems only
and refer to NFPA 409 to determine the discharge area required for hangars.
[Area shall be the hydraulically most remote [_____] square meter foot area as defined by NFPA 13.]
[Area shall be [that protected by each riser] [based on the [15.25] [22.75] [30.50] meter [50] [75] [100] foot
radius rule as determined in accordance with NFPA 409 for Type I aircraft hangars].]
2.1.7 Friction Losses
Calculate losses in pipe in accordance with the Hazen-Williams Formula with 'C' value of 100 for steel pipe [except
120 for steel pipe used in deluge systems], 150 for copper tube, and 140 for cement lined ductile iron pipe.
2.1.8 Location of Sprinkler Heads
Location of heads in relation to the ceiling and spacing of sprinkler heads shall conform to NFPA 13 for extra
hazard occupancy. The spacing of sprinklers on the branch lines shall be essentially uniform.
2.1.9 Water Supply
NOTE: Select first option if the water supply is provided directly from the
base water distribution system and show or specify the point of connection.
Select second option if the water supply is provided from fire pumps dedicated
to the AFFF system, which are taking suction from a static water source. Select
third option if the water supply is provided from booster fire pumps being supplied
from the base water distribution system, and show or specify the point of connection
to the base system. Edit Section 13920, "Fire Pumps" and include as part of
the project specification when using the second or third option.
[Base hydraulic calculations on a static pressure of [_____] kPa (gage) with [_____] L/m pounds per square inch
gage (psig) with [_____] gpm being available at a residual pressure of [_____] kPa (gage) psig at the point [indicated]
[of connection with the base water distribution system].]
[Base hydraulic calculations on [_____] fire pump(s) running. Provide fire pumps as specified in Section
21 30 00 FIRE PUMPS.]
[Base hydraulic calculations on [_____] fire pump(s) running, with a suction supply having a static pressure
of [_____] kPa (gage) psig with [_____] L/m gpm being available at a residual pressure of [_____] kPa (gage)
psig at the point [indicated] [of connection with the base water distribution system]. Provide fire pumps as
specified in Section 21 30 00 FIRE PUMPS].
2.1.10 Duration of Discharge
NOTE: For sprinkler and monitors discharge duration, consult NFPA 409. For
hose station discharge duration, consult NFPA 30 and NFPA 409.
System shall apply foam solution over the sprinkler discharge area for a minimum of [10] [_____] minutes while
simultaneously discharging foam solution through monitors for a minimum of [10] [_____] minutes. Hose station
discharge time shall be a minimum of [20] [_____] minutes. Reduction of the discharge duration based on a discharge
rate higher than the specified minimum is not permitted.
2.2 ELECTRIC DETECTION DEVICES
NOTE: Electric detection system may be used with all detector types specified
in this guide specification and are necessary for complex controls.
Provide electric [heat detectors,] [and] [smoke detectors,] [and] [combination ultraviolet-infrared detectors].
All wiring shall be supervised and installed in protective metal conduit or tubing.
2.2.1 Control Panel
NOTE: Select either "Class B" or Class A" supervision ("Style B" or "Style
D" as defined by NFPA 72). "Class B" supervision which will normally be used,
provides a trouble indication when a failure occurs in a circuit. "Class A"
supervision provides a trouble indication when a fault occurs in a circuit and
at the same time allows continued operation of that circuit. "Class A" supervision
should be used for strategically critical facilities. Select first ("Class
B") or second ("Class A") supervisory option accordingly.
NOTE: Provide a remote trouble bell or buzzer in a constantly attended area
if the control panel is not so located. Provide a trouble bell at the control
panel if the panel is located in a high noise area. Coordinate location of remote
trouble bell and remote annunciator panel when both are provided.
Modular type panel installed in a [flush] [surface] mounted steel cabinet with hinged door and cylinder lock.
Switches and other controls shall not be accessible without the use of a key. The control panel shall be a neat,
compact, factory-wired assembly containing all parts and equipment required to provide specified operating and
supervisory functions of the system. Panel cabinet shall be finished on the inside and outside with factory-applied
enamel finish. Provide main annunciator located on the exterior of the cabinet door or visible through the cabinet
door. Provide audible trouble signal. Provide prominent engraved rigid plastic or metal identification plates,
or silk-screened labels attached to the rear face of the panel viewing window, for all lamps and switches. System
power shall be 120 volts AC service, transformed through a two winding isolation transformer and rectified to
24 volts DC for operation of all system initiating, actuating, signal sounding, trouble signal and fire alarm
tripping circuits. System shall be electrically supervised on all circuits. [A ground fault condition or a
single break in any circuit which prevents the required operation of the system shall result in the operation
of the system trouble signal.] [A single open or ground fault condition in any detection (initiating) [or signaling]
circuit shall not result in any loss of system function, but shall cause the actuation of system trouble signals.
A ground fault condition or single break in any other circuit shall result in the activation of the system trouble
signals.] Loss of AC power, a break in the standby battery power circuits, or abnormal AC power or low battery
voltage shall result in the operation of the system trouble signals. The abnormal position of any system switch
in the control panel shall result in the operation of the system trouble signals. Trouble signals shall operate
continuously until the system has been restored to normal at the control panel. System trouble shall also be
annunciated on the appropriate zone of the building fire alarm panel. [Provide a 100 mm 4 inch remote system
trouble bell [or buzzer], installed [in a constantly attended area] [where shown], arranged to operate in conjunction
with the integral trouble signals of the panel. Provide remote bell [or buzzer] with a rigid plastic or metal
identification sign which reads "Foam System Trouble." Lettering on identification sign shall be a minimum of
25 mm one inch high.] Control panel, batteries, and battery charger shall be weatherproof type or located in
an area not subject to water damage. System control panel shall be UL listed or FM approved for extinguishing
system control (releasing device service). Permanently label all switches. Provide panel with the following
switches:
a. Trouble silencing switch which transfers audible trouble signals (including remote trouble
devices, if provided) to an indicating lamp. Upon correction of the trouble condition, audible
signals will again sound until the switch is returned to its normal position, or the trouble
signal circuit shall be automatically restored to normal upon correction of the trouble condition.
The silencing switch may be a momentary action, self-resetting type.
b. Alarm silencing switch which when activated will silence all associated alarm devices without
resetting the panel, and cause operation of system trouble signals.
c. Individual zone disconnect switches which when operated will disable only their respective
initiating circuit and cause operation of the system and zone trouble signals.
d. Reset switch which when activated will restore the system to normal standby status after
the cause of the alarm has been corrected, and all activated initiating devices reset. [Operation
of reset switch shall restore activated smoke detectors to normal standby status.]
e. Lamp test switch.
[f. City disconnect switch which when activated will disconnect the coded device and cause
operation of the system trouble signal.]
2.2.1.1 Main Annunciator
Provide integral with the main control panel. Provide separate alarm and trouble lamps for each zone alarm initiating
circuit as indicated below, located on the exterior of the cabinet door or visible through the cabinet door.
Lamps shall be LED (Light Emitting Diode) type. Supervision will not be required provided a fault in the annunciator
circuits results only in loss of annunciation and will not affect the normal functional operation of the remainder
of the system. Each lamp shall provide specific identification of the [zone] [area] [device] by means of a permanent
label. In no case shall zone identification consist of the words "Zone 1," "Zone 2," etc., but shall consist
of the description of the [zone] [area] [device].
2.2.1.2 Initiating Zones
NOTE: List zones from 1 to x, with a brief description of each zone; e.g. "Zone
1: Hangar Bay No. 1". Expand this list as necessary to identify all the zones
required for the building.
Shall be arranged as follows:
Zone 1: [_____]
Zone 2: [_____]
Zone 3: [_____]
Zone x: [_____]
2.2.1.3 Remote Annunciator Panel
NOTE: Coordinate location of remote trouble bell and remote annunciator panel
when both are provided. Locate panel at or near the building entrance to allow
fire department quick access to panel.
Locate as shown. Panel shall duplicate all requirements specified for the main control panel annunciator, except
that in lieu of individual zone trouble lamps a single common system trouble lamp may be provided. Lamps shall
be LED (Light Emitting Diode) type, except lamps used in backlit panels shall be LED or neon type. Panel shall
have a lamp test switch. Zone identification shall be by means of [permanently attached rigid plastic or metal
plate(s)] [silk-screened labels attached to the reverse face of backlighted viewing window(s)]. Panel shall
be of the [interior] [weatherproof] type, [flush] [surface] [pedestal]-mounted.
2.2.2 Auxiliary Power Supply
2.2.2.1 Storage Batteries
NOTE: Consult the Public Works Department for battery preference.
Provide [sealed lead calcium,] [or] [sealed lead acid,] [or] [vented wet cell nickel cadmium,] batteries and
charger. Drycell batteries are not acceptable. House batteries in the control panel or in a well constructed
vented steel cabinet with cylinder lock, non-corrosive base, and louvered vents. Provide batteries of adequate
ampere-hour rating to operate the system under supervisory conditions for 60 hours, at the end of which time
batteries shall be capable of operating the entire system in a full alarm condition for not less than [30] [15]
minutes. Provide calculations substantiating the battery capacity. Provide reliable separation between cells
to prevent contact between terminals of adjacent cells and between battery terminals and other metal parts.
Provide batteries with post-and-nut, "L"-blade, or similar terminals. Slip-on tab type terminals are not acceptable.
When a separate battery cabinet is used, provide a fuse block for battery leads within the cabinets. Finish
the cabinet on the inside and outside with enamel paint. Locate the top of the battery cabinet not more than
1.20 meters 4 feet above floor level.
2.2.2.2 Battery Charger
Provide completely automatic high/low charging rate type charger capable of recovery of the batteries from full
discharge to full charge in 24 hours or less. Provide an ammeter for recording rate of charge and a voltmeter
to indicate the state of battery charge under load. Meters shall be factory installed, or factory-supplied plug-in
modules. Field installation of meters other than the panel manufacturer's plug-in modules is prohibited. Provide
a trouble light to indicate when batteries are manually placed on a high rate of charge as part of the unit assembly
if a high-rate switch is provided. House charger in the control panel or battery cabinet.
2.3 PNEUMATIC DETECTION SYSTEM
NOTE: Pneumatic detection system may be used only with single acting rate-of-rise
heat detectors. Consult with the Division Fire Protection Engineer for guidance
on use of pneumatic detection systems.
Provide pneumatic single acting rate-of-rise heat detectors. All tubing shall be supervised and installed in
protective metal conduit or tubing.
2.3.1 Air Compressor
Shall be automatic, electric motor driven and include piping, pressure switch, regulator, and tank if required.
Provide compressor with a minimum capacity capable of charging the pneumatic detection system to normal system
pressure in 15 minutes and shall include all controls necessary to maintain the system fully charged. [Provide
at least one compressor for every [_____] detection circuits.]
2.3.2 Piping and Control Panel
Provide copper piping. Provide a control panel or equivalent device(s) to automatically maintain the required
pneumatic pressure in the detection system, and limit the quantity of air that enters the detection/release system.
Provide supply air and system air pressure gages.
2.4 PIPING SUPERVISION
NOTE: Include for projects involving pre-action sprinkler piping systems or
pneumatic detection systems only.
[Pre-action sprinkler piping] [and] [pneumatic detection system] shall be supervised. A break in the piping
or tubing systems resulting in loss of pneumatic pressure shall result in the activation of a trouble signal.
Provide a silencing switch which transfers trouble signals to an indicating lamp and arrange so that correction
of the trouble condition will automatically transfer the trouble signal from the indicating lamp back to the
trouble signal until the switch is restored to normal position.
2.5 MANUAL RELEASE STATIONS
Provide [combined] overhead system, and monitor nozzle release stations where shown, and separate hose station
release stations at each hose station. Stations shall be of a type not subject to operation by jarring or vibration.
Stations shall have a dual action release configuration to prevent accidental system discharge. Break-glass-front
stations are not permitted; however a pull lever break-glass-rod type is acceptable. Station color shall be red.
Station shall provide positive visible indication of operation. Restoration shall require use of a key or special
tool. Place warning signs at each station indicating that operation of the station will cause immediate AFFF
discharge. Where a building fire alarm pull station is also mounted in the vicinity of a foam release station,
separate the stations by at least one meter 3 feet horizontally. Provided permanent engraved rigid plastic or
metal labels to clearly distinguish foam release stations from building fire alarm stations, and to indicate
the function of each foam release station. Stations shall be weatherproof type.
2.6 HEAT DETECTORS
NOTE: Select the type of heat detector most suited for application or design.
Do not use rate-of-rise detectors in areas subject to rapid temperature changes
(e.g. near main hangar doors, unit heaters, etc.). Consult the Division Fire
Protection Engineer.
Designed for detection of fire by [combination fixed temperature rate-of-rise] [rate compensating] principle.
Locate detectors in accordance with their listing by UL or FM and the requirements of NFPA 72, except provide
at least two detectors in all rooms of 56 sq meters 600 square feet or larger in area. Temperature rating of
detectors shall be in accordance with NFPA 72. Reduce heat detector spacing in areas with ceiling heights exceeding
3 meters 10 feet, in accordance with NFPA 72. No detector shall be located closer than 305 mm 12 inches to
any part of any lighting fixture nor closer than 610 mm 24 inches to any part of an air supply diffuser. Detectors,
located in hazardous locations as defined by NFPA 70, shall be types approved for such locations. Provide with
terminal screw type connections. Removal of detector head from its base shall cause activation of system trouble
signal. Detectors shall be weatherproof type.
2.6.1 Combination Fixed Temperature Rate-of-Rise Detectors
NOTE: Only single acting rate-of-rise heat detectors may be specified for use
with a pneumatic detection system.
Designed for [surface] [semi-flush] outlet box mounting and supported independently of conduit, tubing or wiring
connections. Contacts shall be
self-resetting after response to rate-of-rise actuation. Operation under fixed temperature actuation shall result
in an external indication. Detector units located in areas subject to abnormal temperature changes shall operate
on fixed temperature principle only.
2.6.2 Rate Compensating Detector
Designed for [surface] [flush] [vertical unit] outlet box mounting and supported independently of conduit, tubing
or wiring connections. Detectors shall be hermetically sealed and automatically resetting type which will operate
when ambient air temperature reaches detector setting regardless of rate of temperature rise. Detector operation
shall not be subject to thermal time lag.
2.7 OPEN-AREA (SPOT-TYPE) SMOKE DETECTORS
NOTE: Consult with the Division Fire Protection Engineer before specifying
2 wire smoke detectors as a Contractor option. 2 wire detectors must be carefully
matched to the control panel by the manufacturer, and are not universally interchangeable
between systems for maintenance purposes.
Designed for detection of abnormal smoke densities by the [ionization] [or] [photoelectric] principle. Provide
necessary control and power modules required for operation integral with the main control panel. Provide detectors
and associated modules which are compatible with the main control panel and suitable for use in a supervised
circuit. Detector circuits shall be of the 4 wire type whereby the detector operating power is transmitted over
conductors separate from the initiating circuit. Provide a separate, fused, power circuit for each smoke detection
initiating circuit (zone). Failure of the power circuit shall be indicated as a trouble condition on the corresponding
initiating circuit. [As an alternate, detector circuits of the 2-wire type whereby the detector operating power
is transmitted over the initiating circuit are permitted, provided the detectors used are approved by the control
panel manufacturer for use with the control panel provided and are UL listed or FM approved as being compatible
with the control panel (copies of the UL or FM listings showing compatibility shall be submitted). When 2-wire
smoke detectorsare used, the total number of detectors on any detection circuit shall not exceed 80 percent of
the maximum number of detectors allowed by the control panel manufacturer for that circuit and the standby current
draw of the entire system shall not exceed 80 percent of the rated output of the system power supply module(s).
Provide additional zones above those specified in the paragraph entitled "Initiating Zones" if required to meet
the above requirements. Calculations showing compliance with the power consumption limitation requirements specified
above shall be submitted with the calculations required by the paragraph entitled "Design Data." The data submitted
under the paragraph entitled "Test Reports" shall clearly indicate the compatibility of the detectors with the
control panel provided and the maximum number of detectors permitted per zone.] Malfunction of the electrical
circuits to the detector or its control or power units shall result in the operation of the system trouble signals.
Equip each detector with a visible indicator lamp that flashes when the detector is in the normal standby mode
and glows continuously when the detector is activated. [Provide remote indicator lamps for each detector that
is concealed from view.] Provide plug-in type detectors with tab-lock or twist-lock, quick disconnect head and
separate base in which the detector base contains screw terminals for making all wiring connections. Detector
head shall be removable from its base without disconnecting any wires. Removal of detector head from its base
shall cause activation of system trouble signals. Provide each detector with an integral screen to prevent entrance
of insects into the detection chamber(s).
2.7.1 Ionization Detectors
Multiple chamber type which is responsive to both visible and invisible particles of combustion. Detectors shall
not be susceptible to operation by changes in relative humidity.
2.7.2 Photoelectric Detectors
Operate on a multiple cell concept using an infra-red light-emitting diode (LED) light source.
2.7.3 Detector Spacing and Location
NFPA 72, the manufacturer's recommendations and the requirements stated herein, however, in no case shall spacing
exceed 9 by 9 meters 30 by 30 feet per detector, and 9 lineal meter 30 lineal feet per detector along corridors.
Detectors shall not be placed closer than [1] [1.50] meter [3] [5] feet from any air discharge or return grille,
nor closer than 305 mm 12 inches to any part of any lighting fixture.
2.8 COMBINATION ULTRAVIOLET-INFRARED FLAME DETECTORS
Flame detectors shall operate on the dual spectrum ultraviolet-infrared (UV-IR) principle. Detector shall employ
a solar-blind UV sensor with a high signal-to-noise ratio, and a narrow band IR sensor. Detector logic shall
require UV and IR signals to be present, in the proper ratio or signature as emitted by a hydrocarbon fire, before
the detector initiates an alarm. [Detectors shall respond within 5 seconds to a JP-4 fire 3 meters 10 feet square,
46 meters 150 feet from the detector.] Detector shall not be activated by non-fire sources such as continuous
or intermittent direct or reflected solar radiation, arc-welding, lightning, radiant heat, x-rays, artificial
lighting, radio transmissions, and normal jet engine functions. Detector shall have an automatic through-the-lens
self-testing feature. Malfunction of the detector circuitry, or degradation of the sensors' lens cleanliness
to the point where the detector will not detect the design fire signature, shall cause operation of the system
trouble signals. Logic circuits necessary for operation of the detector shall be integral to the detector or
located in separate flame detector control panel(s) located adjacent to the foam system control panel(s). Each
detector in alarm shall be individually annunciated by an LED on the detector or at the detector control panel.
Primary and auxiliary power supply shall be taken from the foam system control panel(s). Detectors, and associated
control panels if required, shall be compatible with the foam system control panel(s). Detectors and associated
control panels shall be weatherproof, or housed in weatherproof enclosure(s) when in an area subject to system
discharge and shall also be explosion-proof when located in hazardous areas as defined by NFPA 70. Detector
spacing and location shall be in accordance with NFPA 72, their UL listing or FM approval, and the manufacturer's
recommendations. The detector manufacturer shall determine or approve the detector layout. Detector layout
drawings shall include horizontal and vertical angles for correct aiming. Locate detectors so that every portion
of the protected [floor] area is within the field of view of at least [two] [three] detectors, taking into account
fixed obstructions. Provide detectors with manufacturer's swivel mounting bracket. Provide a permanent engraved
rigid plastic or metal label at each detector location with detector aiming information (degrees horizontal and
vertical) for the corresponding detector.
2.9 ELECTRICAL WORK
NOTE: Edit Section 26 20 00, INTERIOR DISTRIBUTION SYSTEM and include as part
of the project specification.
NOTE: When project includes requirement for a building fire alarm system, include
Section 28 31 74.00 20 in the project specification. When project requires
only tying into an existing building fire alarm system, fire alarm wiring should
be specified in this section. Select the first 28 31 74.00 20 Section title
when using the basic NAVFAC guide specification covering the subject work or
select the second title when using the EFD regional guide specification covering
the subject work.
Electrical work is specified in Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM, except for control [and fire alarm]
wiring. [Fire alarm system is specified in Section [28 31 74.00 20 INTERIOR FIRE ALARM SYSTEM] ["Fire Alarm
and Fire Detecting Systems (Local)"]].
2.9.1 Wiring
Provide control wiring and connections to fire alarm systems, under this section and conforming to NFPA 70 and
NFPA 72. Wire for 120 volt circuits shall be No. 12 AWG minimum solid conductor. Wire for low voltage DC circuits
shall be No. [14] [16] AWG minimum solid conductor [, except wire to remote annunciators, if provided, may be
18 AWG minimum solid conductor]. All wiring shall be color coded. Wiring, conduit and devices exposed to water
or foam discharge shall be weatherproof. Wiring, conduit and devices located in hazardous atmospheres, as defined
by NFPA 70[and as shown], shall be explosion proof. All conduit shall be minimum 20 mm 3/4 inch size.
2.9.2 Operating Power
Power shall be 120 volts AC service, transformed through a two winding isolation type transformer and rectified
to 24 volts DC for operation of all signal initiating, signal sounding, trouble signal, and actuating (releasing)
circuits. Provide secondary DC power supply for operation of system in the event of failure of the AC supply.
Transfer from normal to emergency power or restoration from emergency to normal power shall be fully automatic
and shall not cause transmission of a false alarm. Obtain AC operating power for control panel, [and] battery
charger [, and air compressor] from the line side of the incoming building power source ahead of all building
services. Provide independent properly fused safety switch, with provisions for locking the cover and operating
handle in the "POWER ON" position for these connections and locate adjacent to the main distribution panel.
Paint switch box red and suitably identify by a lettered designation.
2.9.3 Conductor Identification
Identify circuit conductors within each enclosure where a tap, splice or termination is made. Identify conductors
by plastic coated self sticking printed markers or by heat-shrink type sleeves. Attach the markers in a manner
that will not permit accidental detachment. Properly identify control circuit terminations.
2.10 SYSTEM ACTIVATION
2.10.1 Overhead System Activation
NOTE: Provide one or more risers per hangar bay as required by NFPA 409 based
on size of bay. Overhead systems, monitor systems and hose systems shall be
served by separate risers.
Each zone shall encompass the area [protected by each riser] [of one hangar bay]. Upon activation of the detection
system or overhead system manual release station(s), the corresponding overhead system protecting that area shall
activate.
2.10.2 Monitor System Activation
NOTE: Overhead systems, monitor systems and hose systems shall be served by
separate risers.
Each zone shall encompass [one hangar bay] [the monitors indicated]. Upon activation of [[detectors for] the
overhead system] [two UV-IR detectors for more than 5 seconds] or activation of a manual release station, all
monitors in that zone shall be activated.
2.10.3 Hose System Activation
NOTE: Overhead systems, monitor systems and hose systems shall be served by
separate risers.
[Each] [The] zone shall encompass [all hose stations] [the hose stations indicated]. Hose stations shall be
activated upon activation of a hose station manual release station. Provide a manual release station at each
hose station.
2.11 ALARMS
2.11.1 Water Motor Alarms
Provide weatherproof and guarded type alarm for each [group of] [deluge] [pre-action] valve(s). Alarms shall
sound locally on the flow of foam solution in each system to which it is connected. Mount alarms on the outside
of the outer walls of each building, at locations indicated. When more than one alarm gong is provided, provide
permanent engraved rigid plastic or metal signs indicating to which system each gong is connected.
2.11.2 Local Alarm
NOTE: Delete if a building fire alarm system exists in the building or is being
provided under this project.
Provide electric [alarm horns] [alarm bells] to sound locally on operation of any system, regardless of whether
water flows or not. When more than one alarm is provided, provide permanent engraved rigid plastic or metal
signs indicating to which system each alarm is connected.
2.11.3 Fire Alarm
Provide equipment for the automatic transmittal of an alarm over the building fire alarm system. Arrange so
that the detection system and the flow of solution in each system will actuate the alarm. [Activation of a single
UV-IR detector shall not cause activation of the foam system but shall cause activation of the fire alarm system].
2.11.3.1 Pressure Switch
Provide switch with SPDT contacts to automatically transmit alarms upon flow of water or AFFF. Alarm actuating
device shall [have mechanical diaphragm controlled retard device adjustable from 10 to 60 seconds and shall]
instantly recycle.
2.11.4 Trouble Alarm
NOTE: Delete if a building fire alarm system exists in the building or is being
provided under this project.
NOTE: Pre-action sprinkler piping systems require supervision.
Provide local [100 mm4 inch] electric alarm [bell] [horn] [_____] to indicate trouble [or failure of the [detection
system] [or] [pre-action sprinkler piping system]]. Also connect trouble alarm into the building fire alarm
control panel to indicate "trouble" on a separate zone labelled "Foam System Trouble".
2.12 TANK MOUNTED AIR COMPRESSOR
NOTE: Include for projects involving pre-action sprinkler piping systems only.
Provide an approved automatic type electric motor driven air compressor including pressure switch, air piping,
and [38 liter] [10 gallon][_____] minimum capacity tank. Compressor shall have a minimum capacity capable of
charging the complete sprinkler system to normal system air pressure within 30 minutes. Provide each system
with an approved automatic air pressure regulating device.
2.13 AFFF CONCENTRATE
NOTE: Consult the facility fire department and the Division Fire Protection
Engineer to determine percentage.
MIL-F-24385, [3] [6] percent.
2.13.1 Concentrate Fill Pump
Provide one pump to fill foam system tank. Pump shall have a minimum flow rate of 27 L/m 7 gpm. Pump shall
be complete with 115 VAC motor, fused switch, power cord with plug and 3 meters 10 foot minimum suction and clear
discharge hoses.
2.14 DIAPHRAGM PRESSURE PROPORTIONING EQUIPMENT
NOTE: Select the method of proportioning best suited for the project. For
hangars, NFPA 409 requires dual pumps (main and reserve) for each system.
Diaphragm pressure proportioning systems operate by water pressure, require
no electrical power, and minimal control circuitry for automatic operation.
Maintenance requirements are minimal, however refilling the tank is a difficult
operation requiring the services of a qualified technician to avoid rupturing
the diaphragm.
Balanced pressure proportioning systems require reliable electrical power and
more complex control circuitry for automatic operation. In some cases an emergency
generator will be required. The primary advantage of the non-diaphragm systems
is the ease in refilling the tanks. Tanks may be refilled even while the system
is in operation, if necessary.
Skid-mounted balanced pressure proportioning systems perform proportioning at
a central location, avoiding long runs of concentrate lines. They are well
suited for systems such as deluge sprinklers and monitor nozzles which have
a relative narrow range of flow rates.
In-line balanced pressure proportioning is useful when there are multiple hazards
with widely varying discharge rates which are to be supplied from the same proportioning
system, and any time it is desired to proportion foam remotely at risers or
discharge devices instead of at the pump room. Their disadvantage is the need
for much more concentrate piping in the field.
Foam solution shall be produced by introducing AFFF concentrate into the water stream by the balanced pressure
proportioning method using a diaphragm pressure tank and ratio controller. [Provide proportioning system and
storage tanks for hose lines independent of main proportioning system and tanks.]
2.14.1 Diaphragm Pressure Proportioning Tanks
NOTE: When large quantities of AFFF concentrate are required, consider two
or more tanks in parallel vs one large tank. (This is in addition to reserve
tanks.) Approved diaphragm tanks larger than 9.50 - 11.40 cu meters 2,500 -
3,000 gallons are not readily available.
NOTE: Designer must calculate foam tank capacity based on maximum flow for
maximum duration to determine size of tank and space required. Do not label
foam tank capacity on drawing. Exact tank size (which may be larger) will be
determined by Contractor's hydraulic calculations.
Tanks shall be cylindrical steel ASME pressure vessels with a full Buna-N impregnated nylon inner tank or bladder
designed to contain AFFF concentrate and to be used in conjunction with the concentrate ratio controller. Tanks
shall be designed for working pressure of [1206 kPa (gage)] [175 psig] [_____] and hydrostatically tested at
1.5 times the working pressure in accordance with ASME standards at the factory. Tanks shall have UL or FM label
and ASME stamp affixed to the vessel. Size tank to provide sufficient AFFF concentrate for the time specified
when the system is discharging foam solution at total maximum system flow. Also provide connected reserve tanks(s)
of equal capacity. Permanently label each tank with its capacity, type and percentage of concentrate, which
system(s) it serves, and whether it is a main or reserve tank. Conspicuously post filling instructions near
each group of tanks. Provide a gage or unbreakable sight glass to permit visual determination of level of tank
contents. Prior to shop painting, abrasive blast clean tank exterior surface in accordance with SSPC SP 6 to
a surface profile not to exceed 0.05 mm 2.0 mils and provide a MIL-P-24441 or SSPC coating system to the tank
exterior. Prime tank exterior with one coat of MIL-P-24441/1, Formula 150 or SSPC Paint 22 primer applied to
a dry film thickness of 0.076 mm 3 mils and topcoat with one coat of MIL-P-24441/7 Formula 156 (red) or SSPC Paint 22
topcoat (red) applied to a dry film thickness of 0.076 mm 3 mils.
2.14.2 Concentrate Ratio Controller
Ratio controller shall be a modified venturi device with AFFF concentrate feed line from diaphragm tank(s), and
integral concentrate metering orifice. Size for specified flow rate(s).
2.15 BALANCED PRESSURE PROPORTIONING SYSTEM
NOTE: Select the method of proportioning best suited for the project. For
hangars, NFPA 409 requires dual pumps (main and reserve) for each system.
Diaphragm pressure proportioning systems operate by water pressure, require
no electrical power, and minimal control circuitry for automatic operation.
Maintenance requirements are minimal, however refilling the tank is a difficult
operation requiring the services of a qualified technician to avoid rupturing
the diaphragm.
Balanced pressure proportioning systems require reliable electrical power and
more complex control circuitry for automatic operation. In some cases an emergency
generator will be required. The primary advantage of the non-diaphragm systems
is the ease in refilling the tanks. Tanks may be refilled even while the system
is in operation, if necessary.
Skid-mounted balanced pressure proportioning systems perform proportioning at
a central location, avoiding long runs of concentrate lines. They are well
suited for systems such as deluge sprinklers and monitor nozzles which have
a relative narrow range of flow rates.
In-line balanced pressure proportioning is useful when there are multiple hazards
with widely varying discharge rates which are to be supplied from the same proportioning
system, and any time it is desired to proportion foam remotely at risers or
discharge devices instead of at the pump room. Their disadvantage is the need
for much more concentrate piping in the field.
Foam solution shall be produced by introducing AFFF concentrate into the water stream by the balanced pressure
proportioning method using a pump and proportioner. [Provide proportioning system and storage tanks for hose
lines independent of main proportioning system and tanks.]
[2.15.1 Skid-Mounted Balanced Pressure Proportioning System
NOTE: Choose this paragraph or the paragraph below, entitled "In-Line Balanced
Pressure Proportioning System."
Self-contained, skid-mounted system, fully assembled at the factory and delivered complete and ready for use.
Field connections shall be limited to water, electrical, and AFFF concentrate inputs, foam solution output, and
foam concentrate return line to storage tank. Size system for required flow rate(s). The concentrate pump and
all piping, valves, and fittings in contact with foam concentrate shall be of materials resistant to the corrosive
effects of the AFFF concentrate. Concentrate pump shall be electric motor driven, drip proof, 240/480 volts,
60 Hz AC. Activation and operation of system shall be fully automatic, with manual over-ride and manual shut-down.
Provide permanent engraved rigid plastic or corrosion resistant metal instruction plate for emergency manual
operation, along with a similarly constructed label for each control device.
][2.15.2 In-Line Balanced Pressure Proportioning System
Size system for required flow rates. AFFF concentrate pump shall be positive displacement, electric motor driven,
drip proof, 240/480 volts, 60 Hz AC. System operation shall be fully automatic, with manual over-ride and manual
shut-down. Provide a pressure regulating device in the AFFF concentrate pump return line to maintain constant
pressure on the concentrate piping system at all AFFF solution flow rates. Provide an in-line balanced pressure
proportioning device at each system riser to automatically balance the AFFF concentrate pressure with the water
pressure at the riser to provide correct proportioning over the range of flow rates calculated for that riser.
The pump and all piping, valves, and fittings in contact with the foam concentrate shall be of materials resistant
to the corrosive effects of the AFFF concentrate. Provide permanent engraved rigid plastic or corrosion-resistant
metal instruction plate for emergency manual operation, along with a similarly constructed label for each control
device.
]2.15.3 AFFF Concentrate Storage Tanks
NOTE: Designer must calculate foam tank capacity based on maximum flow for
maximum duration to determine size of tank and space required. Do not label
foam tank capacity on drawing. Exact tank size (which may be larger) will be
determined by Contractor's hydraulic calculations.
Tank shall be designed for storage of AFFF concentrate at atmospheric pressure, and shall be [horizontal] [or]
[vertical] cylindrical, fiberglass or polyethylene construction. Tank shall have the following: Drain valve
located at the lowest point in the tank, connections for concentrate supply and return lines to the proportioners,
top-mounted fill connections and inspection hatch, and a pressure/vacuum relief vent. All openings and tank
connections shall be installed at the factory, no holes shall be made in the tank shell in the field. Tank shall
include all necessary supports for free-standing installation. Provide a gage or unbreakable sight glass to
permit visual determination of level of tank contents, unless liquid level is clearly visible through shell of
tank. Size tank to provide sufficient AFFF concentrate for the time specified when the system is discharging
foam solution at total maximum system flow. Also provide connected reserve tank(s) of equal capacity. Permanently
label each tank with its capacity, type and percentage of concentrate, which system it serves, and whether it
is a main or reserve tank.
2.16 OSCILLATING MONITOR NOZZLES
NOTE: Refer to MIL-HDBK-1008 and the appropriate NFPA standard(s) governing
the particular facility to determine the density required. Consult the activity
for the floor area under the wings and fuselage.
Fixed, water motor operated, [with] [without] override to allow manual aiming. Oscillation arc shall be adjustable
from at least 0 to 2.88 radian 165 degrees. Oscillation speed shall be adjustable from 0 - 0.52 radian 30 degrees
per second. Nozzle shall be adjustable while in operation from 0.52 radian 30 degrees below to1.40 radian 80
degrees above horizontal, with lock or latching mechanism. Nozzle shall be [non aspirating] [air aspirating]
type, adjustable while in operation from straight stream to fan-spray. Nozzle shall be capable of retaining
the adjusted setting once the desired pattern has been set. [Nozzle shall produce a straight stream of 46 meters
150 feet at [1920 L/m] [500 gpm] [_____] and [690 kPa (gage)] [100 psig] [_____].] [Nozzles shall provide a
minimum application rate of [4.2] [_____] L/m per sq meter [0.10] [_____] gpm per square foot over [the entire
floor area] [[_____] square meter feet of floor area underneath the aircraft wings and fuselage]]. Provide normally
open 0S&Y gate valve in supply line at each monitor location.
2.17 HAND HOSE LINES
Provide each hose station with flow-through reel and [_____] meter of 40 mm feet of 1 1/2 inch hard rubber hose
and nozzles. Nozzle shall have pistol-grip ball shutoff valve. Nozzle shall be [non aspirating] [air aspirating]
type. Provide normally closed quarter-turn ball valve in supply line at each hose station. Nozzle flow rate
shall be [228 L/m] [60 gpm] [_____] minimum.
2.18 WALL FOAM HYDRANTS
NOTE: Provide wall foam hydrants for testing of proportioners on pre-action
systems or where additional foam hand hose lines are required. Determine number
of outlet connections based upon a ratio of one outlet for each 948 L/m 250
gpm of design flow, up to a maximum of 8 outlets.
Provide [dual] [triple] [_____] outlet connections with integral gate valves and locate about one meter 3 feet
above grade. Provide each outlet with 65 mm 2 1/2 inch male National Standard hose threads with cap and chain.
Hydrant shall be controlled by 0S&Y gate valve located inside foam room. Provide wall escutcheon plate with
"FOAM HYDRANT" in raised letters cast in plate. [Hydrant shall permit testing of each pre-action system riser
at full design flow without charging the system supplied by the riser.]
2.19 ABOVEGROUND PIPING SYSTEMS
2.19.1 Pipe, Fittings, and Mechanical Couplings
NFPA 13, except steel piping shall be Schedule 40 for sizes smaller than 200 mm 8 inches, and Schedule 30 or
40 for sizes 200 mm 8 inches and larger. Pipe nipples 150 mm 6 inches long and shorter shall be Schedule 80
steel pipe. Water motor alarm piping shall be zinc-coated steel pipe and fittings. Rubber gasketed grooved-end
pipe and fittings with mechanical couplings shall only be permitted in pipe sizes 40 mm 1 1/2 inches and larger.
Rubber gaskets shall be UL listed for use in dry-pipe sprinkler systems. Use of restriction orifices, reducing
flanges, and plain-end fittings with mechanical couplings (which utilize steel gripping devices to bite into
the pipe when pressure is applied) are not permitted. Pipe and fittings in contact with AFFF concentrate shall
be [material resistant to the corrosive effects of AFFF concentrate as approved by the manufacturer of the proportioning
system] [stainless steel]. [Fittings on concentrate lines shall be flanged or welded only. Screwed or mechanical
fittings will not be permitted.]
2.19.2 Jointing Material
FS A-A-58092, Polytetrafluoroethylene (PTFE) tape. Pipe joint compound (pipe dope) is not acceptable.
[2.19.3 Duplex Basket Strainers
NOTE: Include for deluge systems with high volume flow, and for untreated water
supply.
FS WW-S-2739, Style Y (Y pattern). Provide duplex basket strainers with removable screens having standard perforations,
3 mm 0.125 inch in diameter in the riser beneath the deluge valves.
]2.19.4 Pipe Hangers and Supports
NFPA 13.
2.19.5 Valves
Provide valves as required by NFPA 13 and of types approved for fire service. Gate valves shall open by counterclockwise
rotation. Check valves shall be flanged clear opening swing check type with flanged inspection and access cover
plate for sizes 100 mm 4 inches and larger. Provide an OS&Y valve beneath each [deluge] [pre-action] valve
in each riser, when more than one valve is supplied from the same water supply pipe. Butterfly valves are not
acceptable.
2.19.6 Identification Signs
Attach properly lettered approved metal signs conforming to NFPA 13 to each valve and alarm device. Permanently
affix design data nameplates to the riser of each system.
[2.19.7 Inspector's Test Connection
NOTE: Include for pre-action systems.
Provide test connections about 2 meters 6 feet above the floor for each sprinkler system and locate at the hydraulically
most remote part of each system. Provide test connection piping to a location where the discharge will be readily
visible and where water may be discharged without damage.
]2.19.8 Main Drains
Provide drain piping to discharge at safe points outside each building or to sight cones attached to drains of
adequate size to readily receive the full flow from each drain under maximum pressure. Provide auxiliary drains
as required by NFPA 13.
2.19.9 Pipe Sleeves
Provide where piping passes through walls, floors, roofs, and partitions. Secure sleeves in proper position and
location during construction. Provide sleeves of sufficient length to pass through entire thickness of walls,
floors, roofs, and partitions. Provide not less than 6 mm 1/4 inch space between exterior of piping and interior
of sleeve. Firmly pack space with insulation and calk at both ends of the sleeve with plastic waterproof cement.
2.19.9.1 Sleeves in Masonry and Concrete Walls, Floors, Roofs
ASTM A 53/A 53M, schedule 40 or standard weight, zinc-coated steel pipe sleeves. Extend sleeves in floor slabs
80 mm 3 inches above the finished floor.
2.19.9.2 Sleeves in Partitions
Provide zinc-coated steel sheet having a nominal weight of not less than 4.40 kg per sq meter 0.90 pounds per
square foot.
2.19.10 Escutcheon Plates
Provide one piece or split hinge type plates for piping passing through floors, walls and ceilings, in both exposed
and concealed areas. Provide chromium plated metal plates where pipe passes through finished ceilings. Provide
other plates of steel or cast iron with aluminum paint finish. Securely anchor plates in place.
2.19.11 Fire Department Inlet Connections
[Two] [Three] way type with 65 mm 2 1/2 inch National Standard female hose threads with plug, chain, and identifying
fire department connection escutcheon plate. Provide inlet connections about one meter 3 feet above grade.
2.19.12 Backflow Preventers
NOTE: When the water supply for the AFFF system is non-potable water delete
this paragraph.
Reduced pressure principle type. Proof shall be furnished that each make, model/design, and size of backflow
preventer being furnished for the project is approved by and has a current "Certificate of Approval" from the
FCCCHR List. Listing of the particular make, model/design, and size in the current FCCCHR List will be acceptable
as the required proof.
2.20 BURIED PIPING SYSTEMS
2.20.1 Pipe and Fittings
NOTE: For pipe sizes larger than 305 mm 12 inches, method for pipe anchorage
including pipe clamps and the rods shall be shown on the drawings. Avoid velocities
greater than 4.60 meters per sec 15 ft./sec.
NOTE: Select first bracketed phrase for connection to an existing water distribution
system located a short distance from the building. Select second bracketed
phrase when a new water distribution line is being provided as part of this
project. For new water distribution system, select and edit Section 33 11 00
WATER DISTRIBUTION and include as part of the project specification.
NFPA 24, outside coated cement lined ductile iron pipe and fittings for piping under the building and to a point
1.50 meters 5 feet outside the building walls. Anchor the joints in accordance with NFPA 24 using pipe clamps
and steel rods. Minimum pipe size shall be 150 mm 6 inches. Minimum depth of cover shall be [_____] [one meter]
[3 feet]. Piping more than 1.50 meters 5 feet outside the building walls shall be [outside coated cement lined
ductile iron pipe and fittings conforming to NFPA 24] [provided under Section 33 11 00 WATER DISTRIBUTION].
2.20.2 Valves
NOTE: If Section 33 11 00 WATER DISTRIBUTION is included as part of the project
specification, requirements for buried gate valves, post indicator valves, and
valve boxes may be deleted here and specified in Section 33 11 00. Careful
coordination is required to insure that materials rated for fire service are
specified.
Provide as required by NFPA 24 for fire service. Gate valves shall conform to AWWA C500 or UL 262 with cast
iron body and bronze trim, and shall open by counterclockwise rotation.
2.20.3 Post Indicator Valves
NOTE: If Section 33 11 00 WATER DISTRIBUTION is included as part of the project
specification, requirements for buried gate valves, post indicator valves, and
valve boxes may be deleted here and specified in Section 33 11 00. Careful
coordination is required to insure that materials rated for fire service are
specified.
Provide with operating nut located about one meter 3 feet above grade. Gate valves for use with indicator post
shall conform to UL 262. Indicator posts shall conform to UL 789. Paint each indicator post with one coat of
primer and two coats of red enamel paint.
2.20.4 Valve Boxes
NOTE: If Section 33 11 00 WATER DISTRIBUTION is included as part of the project
specification, requirements for buried gate valves, post indicator valves, and
valve boxes may be deleted here and specified in Section 33 11 00. Careful
coordination is required to insure that materials rated for fire service are
specified.
Except where indicator posts are provided, provide each gate valve in buried piping with an adjustable cast-iron
valve box of a size suitable for the valve on which it is to be used. Boxes outside of paved areas may be of
Acrylonitrile-Butadiene-Styrene (ABS) plastic or of inorganic fiber reinforced black polyolefin plastic. The
head shall be round and the lid shall have the word WATER cast on it. The least diameter of the shaft of the
box shall be 133 mm 5 1/4 inches. Coat each cast-iron box with bituminous paint.
2.20.5 Buried Utility Warning and Identification Tape
Provide detectable aluminum foil plastic-backed tape or detectable magnetic plastic tape manufactured specifically
for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument.
Provide tape in rolls, 76 mm 3 inches minimum width, color coded for the utility involved, with warning and identification
imprinted in bold black letters continuously and repeatedly over entire tape length. Warning and identification
shall be CAUTION BURIED WATER PIPING BELOW or similar. Use permanent code and letter coloring unaffected by moisture
and other substances contained in trench backfill material. Bury tape with the printed side up at a depth of
305 mm 12 inches below the top surface of earth or the top surface of the subgrade under pavements.
PART 3 EXECUTION
3.1 EXCAVATION, BACKFILLING, AND COMPACTING
NOTE: Select and edit Section 02302, "Excavation, Backfilling, and Compacting
for Utilities" and include as part of the project specification.
Provide under this section as specified in Section 31 00 00 EARTHWORK.
3.2 CONNECTIONS TO EXISTING WATER SUPPLY SYSTEMS
Use tapping or drilling machine valve and mechanical joint type sleeves for connections to be made under pressure.
Bolt sleeves around the mains; bolt valve conforming to AWWA C500 or UL 262 to the branch. Open valve, attach
drilling machine, make tap, close valve, and remove drilling machine, all without interruption of service. Notify
the Contracting Officer in writing at least [_____] [15] calendar days prior to the date the connections are
required; approval shall be received before any service is interrupted. Furnish all material required to make
connections into the existing water supply systems, and perform all excavating, backfilling, and other incidental
labor as required. [Furnish] [Government will furnish only] the labor and the tapping or drilling machine for
making the actual connections to the existing systems.
3.3 AFFF SYSTEM INSTALLATION
Equipment, materials, installation, workmanship, fabrication, assembly, erection, examination, inspection, and
testing shall be in accordance with the NFPA standards referenced herein. Install piping straight and true to
bear evenly on hangers and supports. Conceal piping to the maximum extent possible. Piping shall be inspected,
tested and approved before being concealed. Provide fittings for changes in direction of piping and for all
connections. Make changes in piping sizes through standard reducing pipe fittings; do not use bushings. Cut
pipe accurately and work into place without springing or forcing. Ream pipe ends and free pipe and fittings
from burrs. Clean with solvent to remove all varnish and cutting oil prior to assembly. Make screw joints with
PTFE tape applied to male thread only.
3.4 DISINFECTION
NOTE: When the water supply for the AFFF system is non-potable water delete
this paragraph.
Disinfect new water piping from the system control valve to the point of connection at the water main and existing
water piping affected by the Contractor's operation in accordance with AWWA C651. Fill piping systems with solution
containing minimum of 50 mg/kg parts per million (ppm) of free available chlorine and allow solution to stand
for minimum of 24 hours. Flush solution from systems with clean water until maximum residual chlorine content
is not greater than 0.2 mg/kg ppm.
3.5 FIELD PAINTING
NOTE: For facilities located in a marine environment specify SSPC SP 11 cleaning
and specify a second topcoat.
Clean, prime, and paint new foam systems including valves, piping, conduit, hangers, miscellaneous metal work,
and accessories. Apply coatings to clean dry surfaces using clean brushes. Clean the surfaces in accordance
with [SSPC SP 3] [SSPC SP 11]. Immediately after cleaning, prime the metal surfaces with one coat of SSPC Paint 25
or SSPC Paint 25primer applied to a minimum dry film thickness of 0.04 mm 1.5 mils. Exercise care to avoid
the painting of sprinkler heads and operating devices. Upon completion of painting, remove materials which were
used to protect sprinkler heads and operating devices while painting is in process. Remove sprinkler heads and
operating devices which have been inadvertently painted and provide new clean sprinkler heads and operating devices
of the proper type. Finish primed surfaces as follows:
3.5.1 Foam Systems in Unfinished Areas
NOTE: For facilities located in a marine environment specify SSPC SP 11 cleaning
and specify a second topcoat.
Unfinished areas are defined as attic spaces, spaces above suspended ceilings, crawl spaces, foam rooms, pump
rooms, pipe chases, and other spaces where ceilings are not painted or not constructed of a prefinished material.
Paint primed surfaces with [one] [two] coat[s] of FS A-A-2962 red enamel applied to a minimum dry film thickness
of 0.04 mm 1.5 mils.
3.5.2 Foam Systems in All Other Areas
NOTE: For facilities located in a marine environment specify SSPC SP 11 cleaning
and specify a second topcoat.
Paint primed surfaces with two coats of paint to match adjacent surfaces, except paint valves and operating accessories
with [one] [two] coat[s] of FS A-A-2962 red enamel applied to a minimum dry film thickness of 0.04 mm 1.5 mils
. Provide piping with 50 mm 2 inch wide red bands spaced at maximum 6 meters 20 foot intervals throughout the
piping systems. Bands shall be red enamel or self adhering red plastic tape.
3.5.3 Piping Labels
Provide permanent labels in foam rooms, spaced at 6 meters 20 foot maximum intervals along pipe, indicating "WATER",
"FOAM CONCENTRATE", and "FOAM SOLUTION" on corresponding piping.
3.5.4 Field Touch-Up
Clean damaged areas of shop coated tanks in accordance with SSPC SP 11 and coat cleaned areas with the same materials
used for the shop applied coating system.
3.6 ELECTRICAL WORK
NOTE: Edit Section 26 20 00, INTERIOR DISTRIBUTION SYSTEM and include as part
of the project specification.
NOTE: When project includes requirement for a building fire alarm system, include
Section 28 31 74.00 20 in the project specification. When project requires
only tying into an existing building fire alarm system, fire alarm wiring should
be specified in this section. Select the first 28 31 74.00 20 Section title
when using the basic NAVFAC guide specification covering the subject work or
select the second title when using the EFD regional guide specification covering
the subject work.
Electrical work is specified in Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM, except for control [and fire alarm]
wiring. [Fire alarm system is specified in Section [28 31 74.00 20 INTERIOR FIRE ALARM SYSTEM] ["Fire Alarm
and Fire Detecting Systems (Local)"]].
3.6.1 Wiring
Provide control wiring, and connections to fire alarm systems, under this section in accordance with NFPA 70
and NFPA 72. Provide wiring in rigid metal conduit or intermediate metal conduit, except electrical metallic
tubing may be used in dry locations not enclosed in concrete or where not subject to mechanical damage. Do not
run low voltage DC circuits in the same conduit with AC circuits. [Run wiring to UV-IR detectors alone in separate
conduit if required by the detector manufacturer.]
3.7 FLUSHING
Flush the piping system with potable water in accordance with NFPA 13. Continue flushing operation until water
is clear, but for not less than 10 minutes.
3.8 FIELD QUALITY CONTROL
Prior to initial operation, inspect equipment and piping systems for compliance with drawings, specifications,
and manufacturer's submittals. Perform tests in the presence of the Contracting Officer to determine conformance
with the specified requirements.
3.8.1 Preliminary Tests
NOTE: Specify hydrostatic test not less than 1379 kPa 200 psi or 345 kPa 50
psi above the maximum working pressure when the maximum working pressure is
greater than 1034 kPa 150 psi.
Each piping system shall be hydrostatically tested at [1379 kPa (gage)] [200 psig] [_____] in accordance with
NFPA 13 and shall show no leakage or reduction in gage pressure after 2 hours. The Contractor shall conduct
complete preliminary tests, which shall encompass all aspects of system operation. Individually test all detectors,
manual actuation stations, alarms, control panels, and all other components and accessories to demonstrate proper
functioning. Test water flow alarms by flowing water through the inspector's test connection. When tests have
been completed and all necessary corrections made, submit to the Contracting Officer a signed and dated certificate,
similar to that specified in NFPA 13, attesting to the satisfactory completion of all testing and stating that
the system is in operating condition. Also include a written request for a formal inspection and test.
3.8.2 Formal Inspection and Tests (Acceptance Tests)
The [_____] Division, Naval Facilities Engineering Command Fire Protection Engineer, will witness formal tests
and approve all systems before they are accepted. The system shall be considered ready for such testing only
after all necessary preliminary tests have been made and all deficiencies found have been corrected to the satisfaction
of the equipment manufacturer's technical representative and written certification to this effect is received
by the Division Fire Protection Engineer. Submit the request for formal inspection at least 15 working days
prior to the date the inspection is to take place. The control panel(s) and detection system(s) shall be in
continuous service for a "break-in" period of at least 15 consecutive days prior to the formal inspection. Experienced
technicians regularly employed by the Contractor in the installation of both the mechanical and electrical portions
of such systems shall be present during the inspection and shall conduct the testing. All AFFF concentrate,
instruments, [including UV-IR detector test lamp and function test kit,] personnel, appliances and equipment
for testing shall be furnished by the Contractor. All necessary tests encompassing all aspects of system operation
shall be made including the following, and any deficiency found shall be corrected and the system retested at
no cost to the Government.
3.8.2.1 Systems and Device Testing
The entire initiating, alarm, actuation systems shall be operated. As a minimum, operation and supervision of
the following functions and devices shall be demonstrated:
a. All operational and supervisory functions of the control and annunciator panels.
b. Each manual actuation station and associated circuit(s).
c. All detectors and associated circuits.
d. All alarms and associated circuits.
e. All actuator circuits and system control valve(s) (without foam discharge).
f. Activation of the building fire evacuation alarm system.
g. Activation of the Base fire alarm system (receipt of fire alarm at alarm office).
h. All of the above tests shall then be repeated with the system on battery power only.
3.8.2.2 AFFF Discharge and Concentration Testing
When all of the initiating, alarm, actuation, and supervisory functions of the system operate to the satisfaction
of the system manufacturer's technical representative and the Division Fire Protection Engineer, a complete discharge
test of each system shall be performed to demonstrate satisfactory performance, proper AFFF concentration, mechanical
operation and operation of valves, release devices, alarms, and interlocks which control the protected areas.
These tests shall be conducted by experienced personnel according to the equipment and AFFF manufacturers' recommendations.
[a. Test each deluge system by full flow of foam solution from the individual systems or combination
of systems to achieve maximum design flow rate for at least 60 seconds.]
[b. Test each pre-action system at their design flow rate for at least 60 seconds with temporary
hose lines and nozzles connected to a test header. Furnish hose and nozzles required for tests.]
c. Test all hose lines and monitor nozzles by full flow of foam solution for at least 60 seconds.
The manufacturer's representative shall test samples of foam solution taken from each system to ensure proper
AFFF concentration. Provide protection for all electrical fixtures and equipment exposed to possible damage
during tests and protect doors and other openings leading from the protected area(s), to prevent migration of
foam solution into other areas or spaces.
3.8.2.3 Flushing and Rinsing
After completion of tests flush all piping carrying AFFF concentrate and solution with fresh water. Piping normally
containing AFFF concentrate when the system is in standby mode need not be flushed. Rinse with fresh water all
equipment and building surfaces exposed to AFFF discharge.
3.8.3 Environmental Protection
NOTE: Consult facility and the Division or District environmental officials
to determine local requirements for containment and disposal of discharged AFFF.
In sufficient concentrations, AFFF may cause disruption of processes in sewage
treatment plants and damage to fisheries. Edit the paragraph as appropriate.
Provide temporary measures to prevent AFFF from entering storm drains, [sanitary sewers,] drainage ditches, streams
and water courses. [Do not allow AFFF concentrate or solution to come in contact with earth. Contain all discharged
AFFF on paved surfaces.] [Collect all discharged AFFF and rinse and flushing water and dispose of it in an EPA
- approved waste-water treatment facility which provides secondary (biological) treatment]. At least 15 days
prior to the date flow testing is to take place, submit written plan for AFFF containment [and disposal] methods(s)
to the Contracting Officer for approval.
3.8.4 Additional Tests
When deficiencies, defects or malfunctions develop during the tests required, all further testing of the system
shall be suspended until proper adjustments, corrections or revisions have been made to assure proper performance
of the system. If these revisions require more than a nominal delay, the Contracting Officer shall be notified
when the additional work has been completed, to arrange a new inspection and test of the system. All tests required
shall be repeated prior to final acceptance, unless directed otherwise.
3.8.5 AFFF Concentrate Storage Tanks Fill-Up
NOTE: Consult facility to determine whether the Government or the Contractor
will furnish the initial fill-up of AFFF concentrate.
Fill storage tanks including reserve tanks and piping normally containing concentrate when the system is in standby
mode with [Contractor] [Government] furnished AFFF concentrate after acceptance of the system.
3.8.6 Manufacturer's Representative
Provide the services of representatives or technicians from the manufacturers of the foam system, [and] control
panel [, and UV-IR detectors], experienced in the installation and operation of the type of system being provided,
to supervise installation, adjustment, preliminary testing, and final testing of the system and to provide instruction
to Government personnel.
3.9 OPERATING INSTRUCTIONS
Provide operating instructions at control equipment and at each remote control station. Instructions shall clearly
indicate all necessary steps for the operation of the system. Submit the proposed legend for operating instructions
for approval prior to installation. Instructions shall be in engraved white letters on red rigid plastic or
red enameled steel backgrounds and shall be of adequate size to permit them to be easily read.
3.10 TRAINING REQUIREMENTS
Prior to final acceptance, the Contractor shall provide two sessions of 4 hours each of operation and maintenance
training to the Base Fire Department and [Public Works] [Civil Engineering] personnel on two different days to
accommodate both shifts of the Base Fire Department. Each training session shall include emergency procedures,
and unique maintenance and safety requirements. Training areas will be provided by the Government in the same
building as the protected areas. The training conducted shall use operation and maintenance manuals specified
in paragraph entitled "Operations and Maintenance Manuals". Dates and times of the training period shall be
coordinated through the Contracting Officer not less than two weeks prior to the session.
3.11 SCHEDULE
Some metric measurements in this section are based on mathematical conversion of inch-pound measurement, and
not on metric measurement commonly agreed to by the manufacturers or other parties. The inch-pound and metric
measurements shown are as follows:
Products Inch-Pound Metric
a. Air Compressor
Tank Capacity = 10 gallons = 38 liters
b. Concentrate Fill Pump
Flow Rate = 7 gpm = 27 L/m
c. Diaphragm Pressure
Proportioning Tanks
Working Pressure = 175 psig = 1206 kPa (gage)