USACE / NAVFAC / AFCESA / NASA UFGS-21 13 21.00 20 (April 2006)
------------------------------
Preparing Activity: NAVFAC Replacing without change
UFGS-13957N (September 1999)
UNIFIED FACILITIES GUIDE SPECIFICATION
References are in agreement with UMRL dated January 2009
SECTION 21 13 21.00 20
FOAM FIRE EXTINGUISHING FOR FUEL TANK PROTECTION
04/06
NOTE: This guide specification covers the requirements for automatic and manual
tank farm fire extinguishing foam systems.
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: It should not be assumed that an automatic system will always be required.
The NAVFAC Engineering Field Division Fire Protection Engineer will provide
guidance on whether automatic operation or automatic detection with manual operation
is required. Factors to be considered include products stored, proximity to
Department of Defense Fire Department(s) and facility operations and manning.
When the type of operation required is determined, carefully edit this guide
specification to include only those features and elements necessary to provide
that type of operation. For truck or rail car loading/unloading rack protection
use Section 21 13 22.00 20 FOAM FIRE EXTINGUISHING FOR HAZ/FLAM MATERIAL FACILITY.
Assure that up to date reliable hydraulic data is used in design of the project.
System requirements must conform to 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 valve, water
motor alarm, fire department inlet connection, foam hydrants, hand hose stations,
water monitor nozzles, foam chambers, 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. Capacity, height, and type of fuel tank to be protected.
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 base fire 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.
Show mounting details for heat detectors, however, 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 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 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 tanks 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] aqueous film forming foam (AFFF) fuel tank protection system
for [_____]. System shall provide uniform distribution of AFFF solution to provide complete coverage by surface
application to the tank(s) 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 16, [NFPA 24
,] [NFPA 30,] NFPA 70, and NFPA 72, except as modified herein. [Each] [The] system [shall be designed for earthquakes
and] shall include all materials, accessories and equipment necessary to provide [each] [the] system complete
and ready for use. Design and install [each] [the] system to give full consideration to blind spaces, piping,
electrical equipment, 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 the 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] [the] system and the various components have been approved.
Show:
a. Tank and tank farm area layout and include data essential to the proper installation of
[each] [the] system.
b. Foam chambers, 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.
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 relationship for foam chambers and discharge
nozzles.
c. Substantiating battery standby power requirements calculationsshowing battery capacity,
supervisory and alarm power requirements.
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 [, including
complete as-built circuit diagrams,] of each system. 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
NOTE: For automatic operation include bracketed phrase.
Flow of water and AFFF shall be controlled by deluge valves. Foam proportioning equipment shall activate automatically
upon tripping of the deluge valve(s) for the corresponding foam system(s). Valves shall be tripped by remote
manual release stations [and by activation of the detection system]. No valve will be operated by a 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 Tank System
Tank system shall be controlled by valves operated by remote manual release stations [and by activation of the
detection system].
[1.4.2.2 Monitor System
NOTE: Where monitors are activated solely by manually opening a value (e.g.
post indicator valve), show valves on plans.
Monitor nozzles shall be controlled by valves operated [by remote manual release stations separate from those
used for tank systems or hose systems] [manually].
][1.4.2.3 Hose System
Hose reels shall be controlled by valves operated by remote manual release stations, separate from those used
for tank systems or 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 valves[; G][; G, [_____]]
Valves, including gate, check, and globe[; G][; G, [_____]]
Water motor alarms[; G][; G, [_____]]
Foam chambers[; 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, [_____]]
Master fire alarm boxes[; G][; G, [_____]]
Auxiliary transmitters[; G][; G, [_____]]
Radio fire alarm transmitters [and interface panel][; G][; G, [_____]]
Master box location light[; 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, [_____]]
SD-06 Test Reports
Hydrostatic testing of the diaphragm pressure proportioning tanks[; G][; G, [_____]]
Preliminary tests[; G][; G, [_____]]
Acceptance tests[; G][; G, [_____]]
Submit for all inspections and tests specified under paragraph entitled "Field Quality Control."
SD-07 Certificates
Backflow preventers[; G][; G, [_____]]
Qualifications of installer[; G][; G, [_____]]
AFFF containment and disposal plan[; G][; G, [_____]]
Submit installers qualifications as required under paragraph entitled "Qualifications of Installer."
SD-10 Operation and Maintenance Data
Deluge valves, 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 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 fuel tank 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 Tankside Foam Chambers
Provide chamber(s) as required by NFPA 11. Provide each chamber with a manufacturer-approved diaphragm or rupture
disk to prevent entrance of fuel vapors into system piping. Upon discharge of AFFF, diaphragm or disk shall
rupture, allowing foam to flow into the tank. Chamber shall be air-aspirating type with screened air intake
and hinged or removable inspection cover. [Rupture disk or diaphragm is not required for open top, floating
roof tanks].
2.1.2 Deluge Valves
Valves shall be operated by a detection system listed for releasing service and independent of the fire alarm
system. [Deluge 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 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 between 1.80 and 2.40 meters 6
and 8 feet above the finish floor or grade. Label each testing device to indicate the valve it activates. [Provide
remote manual releases [at [_____]] [where shown].]
2.1.3 AFFF Solution Distribution
Distribution shall be essentially uniform from all foam chambers on any single tank.
2.1.4 AFFF Solution Application Density
NOTE: Refer to MIL-HDBK-1008 and NFPA 11 governing the particular hazard to
determine the density required.
Size system to provide the specified density when the system is discharging the specified total maximum required
flow. Application to tanks being protected shall be [_____] mL/sec per sq meter gallons per minute (gpm) per
square foot over the discharge area [with foam hose stream requirements of [_____] mL/sec gpm] [, and with outside
water hose stream [and monitor nozzle] requirements of [_____] mL/sec gpm].
2.1.5 Foam Chamber Discharge Area
NOTE: Select first bracketed option for fixed roof tanks with or without interior
floating pans. Select second bracketed option for floating roof tanks.
Area shall be over the [entire liquid surface] [annular ring seal between the tank wall and foam dam] as required
by NFPA 11.
2.1.6 Friction Losses
Calculate losses in pipe in accordance with the Hazen-Williams Formula with 'C' value of 100 for steel pipe,
150 for copper tube, and 140 for cement lined ductile iron pipe.
2.1.7 Location of Foam Chambers
Locate chambers on the tank wall just below the roof joint as required by NFPA 11. Where two or more chambers
are required, they shall be equally spaced around the tank circumference.
2.1.8 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) pounds per square inch 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].]
[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) psigwith [_____] 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.]
2.1.9 Duration of Discharge
NOTE: For discharge duration, consult NFPA 11 and NFPA 30.
System shall apply foam solution over the discharge area for a minimum of [_____] minutes [while simultaneously
discharging foam solution through hose lines for a minimum of [_____] minutes]. Reduction of the discharge duration
based on a discharge rate higher than the specified minimum is not permitted.
2.2 DETECTION DEVICES
Provide electric heat 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. [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). [Control panel initiating circuits shall be intrinsically
safe for use with line-type heat detection systems.] 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.
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: Tank No. 123". Expand this list as necessary to identify all the zones
required for the project.
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
1.22 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 MANUAL RELEASE STATIONS
Operation of a manual station shall cause the control panel to go into alarm condition and shall cause the valve(s)
controlling the foam discharge to the corresponding hazard to trip. 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 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 fire alarm stations,
and to indicate the function of each foam release station. Stations shall be weatherproof type.
2.4 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.
Consult the Division Fire Protection Engineer.
2.4.1 Spot-Type Heat Detectors
Designed for detection of fire by [combination fixed temperature rate-of-rise] [rate compensating] principle.
Space detectors in accordance with their listing by UL or FM but not more than 15.25 meters 50 feet apart around
the tank perimeter. For fixed roof tanks provide detectors on the tank wall just below the roof joint and at
the center of the roof. For floating roof tanks provide detectors on the interior side of the tank wall above
the highest possible elevation of the roof. Detectors shall be intermediate temperature rated as defined by
NFPA 72. 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.
2.4.1.1 Combination Fixed Temperature Rate-of-Rise Detectors
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.
2.4.1.2 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.
2.4.2 Line-Type Heat Detectors
Provide [thermister] [or] [thermostatic] line-type heat detection cable with weather-resistant outer covering.
Cable shall be suitable for severe industrial exposure. Cable shall be UL listed or FM approved, shall be intermediate
temperature rated as defined by NFPA 72 and shall operate on fixed temperature only. Locate on tank perimeter
and mount as recommended by the manufacturer.
2.5 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. 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)"].]
2.5.1 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 weather,
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.
2.5.2 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 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.
2.5.3 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.
2.6 SYSTEM ACTIVATION
2.6.1 Tank System Activation
NOTE: Depending on the tank size, more than one riser may be required for each
tank. Follow the requirements specified in NFPA 11. Tank systems and hose
systems shall be served by separate mains.
Each zone shall encompass one tank. Upon activation of the tank system manual release station(s), [or the detection
system], all foam chambers protecting that tank shall discharge foam.
[2.6.2 Monitor System Activation
NOTE: Where monitors are activated solely by manually opening a value (e.g.
post indicator valve), delete this paragraph and show valves on plans.
Each zone shall encompass the monitors indicated. Upon activation of a monitor manual release station, all piping
to monitors in that zone shall be charged. Provide a manual release station at each monitor.
][2.6.3 Hose System Activation
NOTE: Tank systems and hose systems shall be served by separate mains.
[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.
]2.7 ALARMS
2.7.1 Water Motor Alarms
Provide weatherproof and guarded type alarm for each deluge valve. 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.
2.7.2 Local Alarm
NOTE: Delete if a fire alarm system exists or is being provided under this
project.
Provide electric [alarm horns] [alarm bells] 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.
2.7.3 Fire Alarm
Provide equipment for the automatic transmittal of an alarm over the facility fire alarm system. Arrange so
that the detection system and the flow of solution in each system will actuate the alarm.
2.7.3.1 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.
[2.7.3.2 Master Fire Alarm Boxes
NOTE: Specify master fire alarm boxes for connection to a positive non-interfering
successive (PNIS) type base fire alarm system and when there is also a need
for a new exterior coded fire alarm box. In mercantile, manufacturing, and industrial
districts it shall not be necessary to travel in excess of one block or 150
meters 500 feet to reach an exterior fire alarm box. Specify local energy tripping
devices unless approved otherwise by the Division or District Fire Protection
Engineer.
Master fire alarm boxes shall be of the coded, positive non-interfering type with succession features having
a local energy type auxiliary tripping device. Boxes shall be of the prewound, open-door pull-lever type. Mechanism
shall be housed in a weatherproof cottage shell housing with metallic bronze or nickel-alloy or rigid plastic
code number plate mounted on the exterior face of the cottage shell. Operation of the actuating pull-lever shall
cause the box to transmit four complete rounds of code. Driving springs shall have the capability to transmit
not less than 8 complete four round groups of code before being rewound. Boxes shall be designed for operation
at 100 milliamperes and shall be capable of full operation between 70 and 120 milliamperes DC line current.
Boxes shall have the ability to transmit signals through ground to overcome an open circuit. Box mechanism shall
be capable of transmitting signals at varying rates of speed ranging from electrical impulses at 3 1/4 second
intervals to 1/4 second intervals and shall be field adjustable to any speed within this range. Each box shall
have a manual signaling key, telephone jack, silent test device and box shunt device. Code wheel shall be metallic.
Box code shall be as directed by the Contracting Officer. Box shall be [wall] [pole] [pedestal]-mounted with
center of box 1.50 meters 5 feet above grade. Mounting bolts, brackets, and fastenings shall be copper alloy
or cadmium or zinc-coated steel. Transmitter housing shall be finished in gloss red enamel. Housing shall have
a reflective, highly visible label imprinted with the word "FIRE" in minimum 50 mm two inch block characters
on both sides of the box.
][2.7.3.3 Automatic Auxiliary Transmitters
NOTE: Specify automatic auxiliary transmitters for connection to a PNIS type
base fire alarm system when there is no requirement for a new exterior coded
fire alarm box. For connection to a shunt non-interfering (SNI) type base fire
alarm system, specify automatic auxiliary transmitters in all instances. Master
boxes are not manufactured for SNI systems.
Auxiliary transmitters shall be of the coded, [positive non-interfering type with succession features] [shunt
non-interfering type]. Transmitters shall be [prewound spring mechanism type having a local energy type auxiliary
tripping device] [or] [solid state electronic type utilizing form "A" or form "C" dry contacts] which, when activated
by the fire alarm control panel, will transmit four rounds of code. Driving springs if required shall have the
capability to transmit not less than 8 complete four-round groups of code before being rewound. [Electronic
transmitters shall have a standby battery with the capacity to power the transmitter in a standby status for
60 hours and then transmit not less than 8 complete four-round groups of code.] Transmitters shall be designed
for operation at 100 milliamperes and shall be capable of full operation between 70 and 120 milliamperes DC line
current. Transmitters shall have the ability to transmit signals through ground to overcome an open circuit.
Transmitters shall have a device to disconnect the transmitter for maintenance purposes. Code wheel if required
shall be metallic. Transmitter code shall be as directed by the Contracting Officer. The transmitter shall
be capable of transmitting signals at varying rates of speed ranging from electrical impulses at 3 1/4 second
intervals to 1/4 second intervals and shall be field adjustable to any speed within this range. Mechanism shall
be housed in a wall mounted locked metal cabinet. Cabinet shall be finished in gloss red enamel. Provide engraved
metallic bronze or nickel-alloy or rigid plastic code number plate mounted on face of transmitter housing.
][2.7.3.4 Radio Fire Alarm Transmitters
NOTE: Specify radio fire alarm transmitters for bases having radio fire alarm
systems. Transmitters must be obtained from the manufacturer of the base system.
Provide manufacturer's name, model number, color and frequency or frequencies
to match the existing system. Interface panels are required by some manufacturer's
systems, whereas with other manufacturer's systems all required functions are
contained within the transmitter enclosure. Edit accordingly. A level I Contracting
Officer must approve use of this paragraph for specifying a proprietary product.
Reason for specifying a proprietary product is that only the manufacturer of
the existing system would have a transmitter which would be FM approved or UL
listed for use with the existing base radio fire alarm system.
Provide a [_____] model [_____] radio [fire alarm [master box] [auxiliary transmitter]] [fire alarm [master box]
[auxiliary transmitter] and model [_____] interface panel] [combination auxiliary transmitter and interface panel]
to be compatible with the existing base system. Not withstanding any other provisions of this contract, no other
product will be acceptable. Transmitter shall operate on a frequency of [_____] MHz [AM] [FM]. Transmitter code
number(s) shall be as specified by the Contracting Officer. Transmitter [and interface] shall operate on 120
VAC and shall also be provided with the manufacturer's approved battery charger and standby battery adequate
to supply standby power for at least 60 hours. Transmitter housing shall be [red] [lime yellow] in color. Mounting
shall be [wall] [pole] [pedestal], 1.50 meters 5 feet above grade. [Arrange the transmitter(s) to send a separate
alarm signal for each zone on the fire alarm control panel as specified in the paragraph entitled "Initiating
Zones", and a common trouble signal for any trouble condition on the control panel.] Provide antenna as recommended
by the transmitter manufacturer. Provide engraved metallic bronze or nickel-alloy or rigid plastic code number
plate mounted on face of transmitter housing.
]2.7.4 Trouble Alarm
NOTE: Delete if a fire alarm system exists or is being provided under this
project.
Provide local [100 mm4 inch] electric alarm [bell] [horn] [_____] to indicate trouble [or failure of the detection
system] and label "Foam System Trouble".
[2.8 MASTER BOX PEDESTAL
NOTE: Select master box pedestal for pedestal mounted telegraphic master boxes.
Select radio master box pedestal for pedestal mounted radio master boxes.
Construct pedestal of galvanized sheet metal with heavy cast iron base, designed to support the fire alarm box
and light. The shaft shall be rectangular in cross section with a hollow compartment inside, readily accessible
and containing facilities for installing cable terminals. Such facilities shall be capable of mounting no less
than ten two-point terminals. The pedestal shall have a suitable red and white finish of the same shades as
those used for the fire alarm boxes.
][2.9 RADIO MASTER BOX PEDESTAL
Pedestal shall have a round aluminum barrel with a bell base, designed to support the radio transmitter, location
light, and antenna. The bell base shall contain a compartment with access plate to permit pulling and splicing
of cables in the base.
]2.10 [MASTER BOX LOCATION LIGHT] [RADIO MASTER BOX LOCATION LIGHT]
Light shall be a vaportight, incandescent type fixture constructed of a cast aluminum housing and unbreakable,
heat resistant, threaded ruby globe. The light shall be supported with 15 mm 1/2 inch galvanized steel conduit
screwed into the hub on the top of the master box. Light shall be located approximately one foot above the master
box. Light shall be provided with an incandescent 25-watt, 130-volt AC extended service lamp.
2.11 AFFF CONCENTRATE
NOTE: Select percentage when specifying MIL-F-24385 concentrate. Consult the
facility fire department and the Division Fire Protection Engineer. MIL-F-24385
does not cover alcohol resistant-type concentrate. Specify UL listed alcohol
resistant-type concentrate if there is a possibility of alcohol-based liquids
being present. When alcohol resistant foam is required, it must be used at
the UL listed application rate. Currently 3 percent alcohol resistant-type
concentrate is not available.
[MIL-F-24385, [3] [6] percent] [UL listed alcohol/polar solvent resistant type].
2.11.1 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.
2.12 DIAPHRAGM PRESSURE PROPORTIONING EQUIPMENT
NOTE: Select the method of proportioning best suited for the project.
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. This feature is valuable when prolonged fire
fighting operations may be encountered.
Skid-mounted balanced pressure proportioning systems perform proportioning at
a central location, avoiding long runs of concentrate lines. They are well
suited for systems 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.
Line proportioners (venturi type) are fixed-flow rate devices which are useful
on relatively small systems which have only one set flow rate per proportioner.
They require no electric power but have limited application, since they require
high water pressure and low discharge back pressure.
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.]
2.12.1 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 gallonsare 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 INTERNATIONAL (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.
2.12.2 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).
2.13 BALANCED PRESSURE PROPORTIONING SYSTEM
NOTE: Select the method of proportioning best suited for the project.
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. This feature is valuable when prolonged fire
fighting operations may be encountered.
Skid-mounted balanced pressure proportioning systems perform proportioning at
a central location, avoiding long runs of concentrate lines. They are well
suited for systems 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.
Line proportioners (venturi type) are fixed-flow rate devices which are useful
on relatively small systems which have only one set flow rate per proportioner.
They require no electric power but have limited application, since they require
high water pressure and low discharge back pressure.
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.]
[2.13.1 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.
][2.13.2 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.
]2.13.3 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.
NOTE: Consult the Division or District Fire Protection Engineer to determine
need for reserve tanks.
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].
2.14 LINE PROPORTIONING (VENTURI TYPE) SYSTEM
NOTE: Select the method of proportioning best suited for the project.
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. This feature is valuable when prolonged fire
fighting operations may be encountered.
Skid-mounted balanced pressure proportioning systems perform proportioning at
a central location, avoiding long runs of concentrate lines. They are well
suited for systems 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.
Line proportioners (venturi type) are fixed-flow rate devices which are useful
on relatively small systems which have only one set flow rate per proportioner.
They require no electric power but have limited application, since they require
high water pressure and low discharge back pressure.
Size system for required flow rates. Provide separate proportioner for each [tank] [,] [riser] [, or] [group
of discharge devices required to operate simultaneously]. Ensure suction lift of proportioner(s) and system
back pressure do not exceed limits specified by the proportioner manufacturer.
2.14.1 AFFF Concentrate Storage Tank
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.
NOTE: Consult the Division or District Fire Protection Engineer to determine
need for reserve tanks.
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].
[2.15 WATER MONITOR NOZZLES
NOTE: Refer to MIL-HDBK-1008 to determine the density required.
Manually operated, [free standing] [hydrant mounted] type with 6.30 radian 360 degree rotation and capable of
being locked at any position. Nozzle shall be adjustable while in operation from 0.35 radian 20 degrees below
to 1.40 radian 80 degrees above horizontal, with lock or latching mechanism. [Nozzle shall be adjustable while
in operation from straight stream to spray.] Nozzle shall produce a straight stream of 46 meters 150 feet at
[1920 L/m] [500 gpm] [_____] and [690 kPa (gage)] [100 psig] [_____]. Provide [post indicator] [0S&Y gate]
[quarter-turn indicating] valve in water supply line at each monitor location.
][2.16 HAND HOSE LINES
At each hose station, provide [flow-through reel with 40 mm 1 1/2 inch hard rubber] [automatic hose rack in cabinet
with 40 mm 1 1/2 inch lined, double jacket] hose and nozzles. Provide minimum [_____] meter feet of hose. Nozzle
shall have pistol-grip ball shutoff valve. Nozzle shall be [non aspirating] [air aspirating] type. Provide
normally closed quarter-turn valve in supply line at each hose station. Nozzle flow rate shall be [139 L/m]
[50 gpm] [_____] minimum.
]2.17 FOAM HYDRANTS
NOTE: Provide foam hydrants for testing of proportioners 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 [single] [dual] 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 65 to 40 mm 2 1/2
to 1 1/2 inch reducer with cap and chain. Provide wall escutcheon plate with "FOAM HYDRANT" in raised letters
cast in plate.
2.18 ABOVEGROUND PIPING SYSTEMS
2.18.1 Pipe, Fittings, and Mechanical Couplings
NFPA 11, 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. All steel piping shall be zinc-coated. 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. Gasketed fittings are not permitted inside the diked area. 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.]
2.18.2 Jointing Material
FS A-A-58092, Polytetrafluoroethylene (PTFE) tape. Pipe joint compound (pipe dope) is not acceptable.
[2.18.3 Duplex Basket Strainers
NOTE: Include for 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.
]2.18.4 Pipe Hangers and Supports
NFPA 11 and NFPA 13.
2.18.5 Valves
Provide valves as required by NFPA 11 and 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 valve in each riser, when more than one valve is supplied from the same water supply pipe. Butterfly valves
are not acceptable.
2.18.6 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.
2.18.7 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 11 and NFPA 13.
2.18.8 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 6.50 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.
2.18.8.1 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.
2.18.8.2 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.
2.18.9 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.
2.18.10 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.
2.18.11 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.
2.19 BURIED PIPING SYSTEMS
2.19.1 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 4.50 meters per second 15 ft./sec.
NOTE: Select first bracketed phrase for connection to an existing water distribution
system located a short distance from the work. Select second bracketed phrase
when a new water distribution line is being provided as part of this project.
For new water distribution system, select Section 33 11 00 WATER DISTRIBUTION,
edit the appropriate guide specification 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].
2.19.2 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.
2.19.3 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.
2.19.4 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.
2.19.5 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, 80 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: Sectect 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. 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 operating devices. Upon completion of painting, remove materials which were used to protect
operating devices while painting is in process. Remove operating devices which have been inadvertently painted
and provide new clean 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 locations exposed to weather, 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. Paint surfaces exposed to weather with two coats of red
enamel as specified herein.
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.
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 or 345 kPa 200 psi or
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 11 and 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. 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, 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 fire 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 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. Test tank-side foam
chambers by turning chambers and flowing foam solution down outside of tank.
[b. Test all hose lines by full flow of foam solution for at least 60 seconds.]
[c. Test monitor nozzles by full flow of water.]
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 take necessary steps to prevent soil erosion [and contain runoff] during testing.
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 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 or in tanks.] [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, 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. 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 measurements, and
not on metric measurements commonly agreed on by the manufacturers or other parties. The inch-pound and metric
measurements shown are as follows:
Products Inch-Pound Metric
a. Alarm Bells
Diameter = 4 inches = 100 mm
b. AFFF Concentrate Fill Pumps
Minimum Flow Rate = 7 gpm = 27 L/m
c. Diaphragm Pressure
Proportioning Tanks
Working Pressure = 175 psig = 1206 kPa (gage)
d. Buried Warning and
Identification Tapes
Width = 3 inches = 80 mm