USACE / NAVFAC / AFCESA / NASA UFGS-11 53 00 (November 2008)
-----------------------------
Preparing Activity: NAVFAC Superseding
UFGS-11 53 00 (April 2006)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 11 53 00
LABORATORY EQUIPMENT AND FUMEHOODS
11/08
NOTE: This guide specification covers the requirements for laboratory equipment
and fume hoods.
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: Types of equipment normally specified in this section include fumehoods,
furniture not specified in casework section, and related laboratory products.
Laboratory fumehoods included by the guide specification are not to be utilized
for perchloric acid handling operations. Perchloric acid is extremely dangerous
because it is a very strong oxidizer. When this acid reacts with organic material,
an explosive product may form.
NOTE: On the drawings, show:
1. Location of equipment, utility connections and relation to other work.
2. Remotely located blower and ductwork, to create negative pressure at hood.
Require weatherproof caution labels attached to outlet end of exhaust systems
where warning of dangerous chemical fumes will be necessary.
3. Fans and ductwork needed to create negative pressure. Laboratory fume hoods
are ventilated enclosures designed to provide safe working area for laboratory
activities involving hazardous materials, generated fumes, aerosols, gases,
and particulate matter. To operate satisfactorily, air is removed from enclosure
at optimum face velocity. Require velocities measurable at maximum face area
of hood, with maximum allowances for hood, filter, and appurtenance static pressure
losses within specified limits.
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 CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENISTS (ACGIH)ACGIH-2092S(2004) Industrial Ventilation: A Manual of Recommended Practice][ASTM INTERNATIONAL (ASTM)ASTM A 167(1999; R 2004) Standard Specification for Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and StripASTM A 366/A 366M(1997e1) Standard Specification for Commercial Steel, Sheet, Carbon,(0.15 Maximum Percent Cold-RolledASTM B 221(2008) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and TubesASTM B 221M(2007) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)ASTM C 1048(2004) Standard Specification for Heat-Treated Flat Glass - Kind HS, Kind FT Coated and Uncoated Glass][CENTERS FOR DISEASE CONTROL AND PREVENTION (CDC)CDC BMBL(1999; Errata) Biosafety in Microbiological and Biomedical Laboratories, 4th Edition][NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)NFPA 45(2004; Errata 2005) Fire Protection for Laboratories Using ChemicalsNFPA 70(2007; AMD 1 2008) National Electrical Code - 2008 Edition][UNDERWRITERS LABORATORIES (UL)UL 586(1996; Rev thru Aug 2008) Standard for High-Efficiency Particulate, Air Filter Units]1.2 RELATED WORK SPECIFIED IN OTHER SECTIONS
Conform to provisions of Section 11 70 00 GENERAL REQUIREMENTS FOR MEDICAL AND DENTAL EQUIPMENT and Section
12 35 70 CASEWORK FOR MEDICAL AND DENTAL FACILITIES. Provide final utility connections and utility service to
equipment including waste, under Sections 23 03 00.00 20 BASIC MECHANICAL MATERIALS AND METHODS; 22 00 00 PLUMBING
SYSTEMS; 22 60 70 GAS AND VACUUM SYSTEMS FOR HEALTHCARE FACILITIES; 26 00 00.00 20 BASIC ELECTRICAL MATERIALS
AND METHODS; and 26 20 00 INTERIOR DISTRIBUTION SYSTEM.
1.3 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:
SD-02 Shop Drawings
Laboratory equipment and fume hood layout[; G][; G, [_____]]
Laboratory equipment and hood schedules
SD-03 Product Data
Fumehood assembly[; G][; G, [_____]]
Radio isotope fumehood[; G][; G, [_____]]
Biological safety cabinet[; G][; G, [_____]]
Include descriptive literature, technical data sheets, and diagrams.
SD-04 Samples
Exterior hood paint[; G][; G, [_____]]
SD-06 Test Reports
Fumehood test[; G][; G, [_____]]
Base cabinet test[; G][; G, [_____]]
SD-08 Manufacturer's Instructions
Fumehood assembly
Radio isotope fumehood
Biological safety cabinet
SD-10 Operation and Maintenance Data
Fumehood assembly, Data Package 2[; G][; G, [_____]]
Radio isotope fumehood, Data Package 2[; G][; G, [_____]]
Biological safety cabinet, Data Package 2[; G][; G, [_____]]
Submit in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA.
1.4 SUBMITTAL REQUIREMENTS
1.4.1 Hood Paint
Submit color chips of exterior hood paint. Submit [at least five] colors which are standard with the manufacturer.
1.4.2 Drawing Requirements
Show pertinent installation layout. Indicate details of construction and rough-in requirements.
1.4.3 Schedule
Include each type of equipment and hood and submit in accordance with Section 11 70 00 GENERAL REQUIREMENTS FOR
MEDICAL AND DENTAL EQUIPMENT.
1.4.4 Tests
Submit fumehood test [and] cabinet test reports required by ACGIH-2092S.
PART 2 PRODUCTS
2.1 MATERIALS, COMPONENTS, AND SPECIAL DESIGN REQUIREMENTS
NOTE: Use of certain chemicals such as hydrochloric and hydrofluoric acids
may react with specified materials. Epoxy, mineral, or synthetic materials
for hood interior working area, acid wastes, and drains may be required depending
on chemicals to be used. If other materials are required, add text.
2.1.1 Aluminum Alloy
ASTM B 221MASTM B 221 equivalent in ultimate tensile, yield, and shear strengths to Alloy 6063-T5 or 6063-T6.
2.1.2 Carbon Steel
ASTM A 366/A 366M, cold rolled sheets, commercial bright finish.
2.1.3 Stainless Steel
ASTM A 167; No 4 satin finish including welds and fabricated surfaces. Provide Type 302, 304, or 316 alloy unless
otherwise specified. Provide minimum thickness of 1.5 mm U.S. Standard 16 gage, except 1.8 mm thick 14 gage
for working surface.
2.1.4 Safety Glass
ASTM C 1048, fully tempered "FT," clear.
2.1.5 Casework Components
Conform with Section 12 35 70 CASEWORK FOR MEDICAL AND DENTAL FACILITIES for base cabinets, counter tops, service
fittings and finishes.
2.1.6 High Efficiency Particulate Air (HEPA) Filter
Meet requirements of UL 586.
2.1.7 Fumehood Design
Design, calculate face velocities, and test fume hoods in accordance with ACGIH-2092S, Laboratory fume hoods,
auxiliary systems, and associated equipment shall meet the requirements of NFPA 70 and NFPA 45.
2.1.8 Hood Static Pressure Loss
NOTE: For determining the system total static pressure loss for sizing blowers,
use the hood maximum static pressure loss when operating at 46 mpm 150 fpm face
velocity; allow 50 mm 2 inch water gage loss for dirty HEPA filter and 25 mm
one inch water gage additional loss for a downstream charcoal filter or a prefilter
(or the filter manufacturer's recommended resistance at the rated cfm of exhaust
air).
With the sash in full-open position the static pressure loss through the fumehood shall not exceed 13 mm 1/2
inch water gage when operating at 23 mpm 75 feet per minute (fpm), 22 mm 7/8 inch water gage at 30 mpm 100 fpm
, 29 mm 1.125 inch water gage at 38 mpm 125 fpm. For hoods equipped with bypass, the static pressure loss and
exhaust volume shall remain relatively constant (within 5 percent) regardless of sash position.
2.1.9 Electrical Devices
Prewired at the factory to a common, integral junction box to provide easy exterior connection and disconnection.
2.2 UNITS
2.2.1 Unit [_____, _____]
2.2.1.1 Base Cabinet Portion of Assembly
[_____].
2.2.1.2 Hood Interior
[_____].
2.2.1.3 Sash
[_____].
2.2.2 Fumehood Assembly, Constant Volume
NOTE: Provide packaged heater assembly for tempering cold outside air when
auxiliary air type hoods are specified.
Constant volume, [auxiliary air] [bypass/airfoil] configuration, enclosed unit mounted on base cabinet; exterior
dimensions maximum 1245 mm wide (across face) by 750 mm deep (front to back by 2400 mm high 49 inches wide (across
face) by 30 inches deep (front to back) by 96 inches high; interior working area at least 900 mm wide by 600
mm deep by 1195 mm high 36 inches wide 24 inches deep by 47 inches high.
2.2.2.1 Base Cabinet Portion of Assembly
Carbon steel, modified to have recessed apron to contain electrical convenience outlets.
2.2.2.2 Hood Interior, Including Working Surface
Type 304 stainless steel, with interior vertical joints and intersections of vertical surface with working surface
having an approximate 20 mm 3/4 inch radius. Provide working surface with a raised rim around all sides to prevent
spillage from running out face of hood.
2.2.2.3 Sash
Safety glass, 5.6 mm 7/32 inch minimum thickness, counterbalanced, vertical sliding type, Type 304 stainless
steel frame.
2.2.2.4 Baffle
Adjustable, with moving parts resistant to corrosion, removable for cleaning.
2.2.2.5 Lighting Fixtures
[Explosion proof] [Vapor proof], fluorescent, with cool white lamps and switch, providing 800 lux 75 foot candles
on working area. Locate switch for fixture on exterior of hood frame, or in recess of base cabinet. Provide
sealed safety glass window barrier between interior working and fixture spaces, and access for tube replacement
exterior to hood interior working area.
2.2.2.6 Service Fixtures
Provide remote controls for piped services and locate on hood exterior frame. Provide serrated supply ends with
nozzles arranged close to sash, precluding the need of reaching to interior back of hood to make connections
to outlets. Base metal of fixtures shall be brass. Protect metal fixtures inside hood with chemical resistant
coating of [clear plastic over polished chrome plate] [or] [_____].
a. Cold water: Remote controlled valve, with vacuum breaker; hood wall mounted gooseneck faucet
with serrated nozzle. Arrange faucet parallel to hood wall and over cup sink.
b. Gas, air and vacuum: Provide fixtures for each service, each fitting with remote controlled
valve and supply end (inside hood) consisting of a serrated hose nozzle and escutcheon trim.
Provide natural gas, air at 685 kPa 85 psig, and vacuum at 750 mm 30 inches of HG.
c. Acid waste: Recessed cup sink, 75 by 150 mm 3 by 6 inches or 75 by 225 mm 3 by 9 inches
, fabricated of Type 316 stainless steel, 2 liter capacity. Furnish with acid waste p-trap
and locate under water faucet, integral with countertop. Provide acid vent.
d. Electrical convenience outlets: Two duplex, grounded, three-wire, 125 volt, 60 Hz, single
phase [and one 240 volt single phase], 20 ampere. Locate in recessed area of base cabinet or
on side posts of hood. Provide stainless steel or chrome-plated cover plate. [Provide 15 ampere
circuit breaker protection.]
2.2.2.7 Blower Switch
NOTE: Coordinate switch requirements with specifications for the blowers for
fume hoods. Fans requiring switches not discussed in the paragraph cited above
(e.g., greater than one horsepower or 208-volt) shall have a single pole switch
with an indicator light.
[Single-pole, 115-volt] [Double-pole, 208-volt], 60-Hz, with pilot light. Locate switch in hood frame or in recess
of base cabinet.
2.2.2.8 Duct Stub
NOTE: Verify that ductwork to hoods is discussed in the appropriate documents
and that blowers for the hoods are located at exhaust end. Avoid positive pressure
in ducts.
Collar size suitable for ductwork indicated. Finish of areas that may come in direct contact with fumes shall
be same material and finish as hood interior.
2.2.3 Radio Isotope Fumehood With Vent
Enclosed, isotope-type hood mounted on base cabinet of [auxiliary air] [bypass/airfoil] configuration. Maximum
exterior dimensions: 900 mm wide (across face) by 750 mm ddep (front to back) by 2400 mm high (including base)
36 inches wide (across face) by 30 inches deep (front to back) by 96 inches high (including base). Minimum
interior working area: 750 by 600 mm deep by 1170 mm high 30 by 24 inches deep by 46 inches high.
2.2.3.1 Base Cabinet Portion of Assembly
Carbon steel comparable to a sink cupboard section, modified to have recessed apron to contain electrical convenience
outlets.
2.2.3.2 Hood Interior, Including Working Surface
Type 304 stainless steel, with interior vertical joints and intersections of vertical surface with working surface
having an approximate 20 mm 3/4 inch radius. Working surface shall have a raised rim all around to prevent spillage
from running out face of hood.
2.2.3.3 Sash
NOTE: Several materials are available for sash. Clear safety glass is acceptable
where minimum storage of materials allows use of lead bricks as a front barrier.
Leaded safety glass provides excellent protection but scratches easily. Bulletproof
glass and various plastics have good resistance to certain levels of radiation.
[Safety glass] [Leaded (equivalent to [_____] mm inch lead protection) safety glass] [_____], vertical sliding
type, counterbalanced.
2.2.3.4 Lead Lining
Concealed, [_____] mm inch[es] thick. Provide with lapped seams, protecting areas adjacent to the three enclosed
vertical sides of the hood [and the area below working surface of hood]. Lap sash area and intersections with
adjacent surfaces at least 10 mm 3/8 inch.
2.2.3.5 Baffle
Adjustable with moving parts resistant to corrosion, removable for cleaning.
2.2.3.6 Lighting Fixture
Vapor proof, fluorescent, with cool white lamps and switch, providing 800 lux 75 foot candles on working area.
Locate switch for fixture on exterior front of hood, or in recess of base cabinet.
2.2.3.7 Mirror
NOTE: Mirror is for view behind lead brick barrier. Clear safety glass is
acceptable where minimum storage of materials allows use of lead bricks as a
front barrier. Leaded safety glass provides excellent protection but scratches
easily. Bulletproof glass and various plastics have good resistance to certain
levels of radiation. It may be desirable for any sash finish. Delete if special
equipment must be attached to back interior.
Fully framed, fully adjustable, and suitably backed to prevent fume damage to silvering.
2.2.3.8 Service Fixtures
Locate remote controls for piped services on hood exterior and provide serrated supply ends with nozzles arranged
close to sash, precluding the need of reaching to interior back of hood to make connections to outlets. Base
metal of fixtures shall be brass. Protect metal fittings inside hood with chemical resistant coating of [clear
plastic over polished chrome plate] [or] [_____].
a. Cold water: Remote controlled valve with vacuum breaker; hood wall mounted gooseneck faucet
with serrated nozzle. Arrange faucet parallel to hood wall.
b. Natural gas and vacuum: Provide fixtures for each service, each fitting with remote controlled
valve. Supply end (inside hood) consisting of a serrated hose nozzle and escutcheon trim.
Provide natural gas and vacuum 750 mm HG 30 inches HG.
c. Acid waste: Recessed cup sink, 750 by 150 or 75 by 225 mm 3 by 6 or 3 by 9 inches, fabricated
of Type 316 stainless steel, 2 liter capacity. Furnish with acid waste p-trap and locate under
water faucet, integral with countertop. Provide acid vent.
d. Electrical convenience outlet: Two polarized duplex, grounded, three-wire, 125 volt, 60
Hz, single phase [and one 240 volt single phase], 20 ampere. Locate in recessed area of base
cabinet or on side posts of hood. Provide stainless steel or chrome-plated cover plate. [Provide
15 ampere circuit breaker protection.]
2.2.3.9 Blower Switch
NOTE: Coordinate switch requirements with specifications for the blowers for
fume hoods. Fans requiring switches not discussed in the paragraphs cited above
(e.g., greater than one horsepower or 208-volt) shall have a single pole switch
with an indicator light.
[Single-pole, 115-volt] [Double-pole, 208-volt], 60-Hz, with pilot light. Locate switch in hood frame or in recess
of base cabinet.
2.2.3.10 Duct Stub
NOTE: Verify that ductwork to hoods is discussed in the appropriate documents
and that blowers for the hoods are located at exhaust end. Avoid positive pressure
in ducts.
Collar size suitable for ductwork indicated. Material of collar same as hood interior or metal coated with epoxy
having corrosion resistance comparable to finish on fittings in hood.
2.2.3.11 Replaceable Filter
[HEPA, efficiency [_____] percent] [and] [prefilter] [activated charcoal filter]; with stainless steel filter
housing. HEPA filter static pressure loss shall not exceed 249 pascals one inch water gage when clean and operated
at the rated airflow capacity.
2.2.3.12 Warning System
Ensure detection and alarm for insufficient air velocities caused by failure of supply or exhaust system or by
dirty filter. [Provide static pressure sensing switch in exhaust duct to shut off auxiliary air blower when
failure occurs].
2.2.4 Biological Safety Cabinet
Suitable for biological work and protecting the user from airborne infectious agents and similar hazardous particulate
matter by providing an inward flow of air while preventing hazardous discharge into ambient atmosphere. Hood
must meet the requirements for CDC BMBL, and have overall approximate dimensions of 1800 mm wide (across front)
by 790 mm deep (front to back) by 2160 high 72 inches wide (across front) by 31 inches deep (front to back) by
85 inches high.
2.2.4.1 Glove Panel
Removable, with two pairs of combination gloves, hand sections of surgical rubber, detachable from neoprene sleeves.
Provide with built-in tubes connectable to air supply and appropriate "O" rings and clamps. Glove assembly removable,
providing access into hood for bare-hand work. Hood shall meet the requirements for general purpose fume hoods
of ACGIH-2092S, when operated with glove panel removed.
2.2.4.2 Light Fixture[s]
Fluorescent, prewired, with cool white bulbs, with switch hood-mounted exterior to working area. [Ultraviolet,
germicidal, prewired, single tube, with separate switch hood-mounted exterior to working area].
2.2.4.3 Service Fittings
Locate remote controls for piped services on hood exterior; provide serrated supply end. Base metal of fixtures
shall be brass. Protect metal fixtures inside hood with [chemical resistant coating of clear plastic over polished
chrome plate] [or] [_____].
a. Natural gas, air at 685 kPa 85 psig minimum, and vacuum at 750 mm 30 inches HG.
b. Cold water: Remote controlled valve with vacuum breaker; hood-wall mounted gooseneck faucet
with serrated nozzle. Arrange faucet parallel to hood wall.
c. Sink and drain: 300 mm long by 150 mm wide by 50 mm deep 12 inches long by 6 inches wide
by 2 inches deep; minimum of 1.25 mm 0.050 inch thick stainless steel, welded into surface of
cabinet, corners coved to not less than 6 mm 1/4 inchradius. Provide with stainless steel strainer;
drain plug; and 38 mm 1 1/2 inch borosilicate glass non-syphon P-Trap, with compression joints
and bottom clean-out fitting.
d. Electrical convenience outlets: Two polarized duplex, grounded, three-wire, 125 volt, 60-Hz.,
single phase [and one 240 volt single phase], 20 ampere. Locate on exterior of hood front or
on hood side walls near hood front. Include stainless steel or chrome-plated cover plate.
[Provide 15 ampere circuit breaker.]
2.2.4.4 Viewing Panel
Safety glass, 5.56 mm 7/32 inch minimum thickness.
2.2.4.5 Blower Switch
NOTE: Coordinate switch requirements with specifications for the blowers for
fume hoods. Fans requiring switches not discussed in the paragraphs cited above
(e.g., greater than 750 watt one horsepower or 208 volt) shall have a single
pole switch with an indicator light.
[Single-pole, 115 volt] [Double-pole, 208 volt], 60 Hz, with pilot light. Include galvanized switch box and chrome-plated
metal switch cover plate. Locate switch on hood exterior.
2.2.4.6 Duct Stub
NOTE: Verify that ductwork to hoods is discussed in the appropriate documents
and that blowers for the hoods are located at exhaust end. Avoid positive pressure
in ducts.
Collar size suitable for ductwork indicated. Finish of areas that may come in direct contact with fumes to be
same as to hood interior.
2.2.4.7 Intake and Exhaust Filters
Replaceable HEPA filters having a minimum efficiency rating of 99.97 percent, including stainless steel housing.
HEPA filter static pressure loss shall not exceed one inch water gage when clean and operated at the rated airflow
capacity.
2.2.4.8 Warning System
Ensure detection and alarm for insufficient air velocities caused by failure of exhaust system or by dirty filters.
PART 3 EXECUTION
3.1 INSTALLATION
Install units at locations indicated. Conform to installation provisions of Section 11 70 00 GENERAL REQUIREMENTS
FOR MEDICAL AND DENTAL EQUIPMENT [and utility installation provisions of] [Section 23 11 25 FACILITY GAS PIPING;]
[Section 33 51 15 NATURAL-GAS / LIQUID PETROLEUM DISTRIBUTION;] [Section 22 00 00 PLUMBING SYSTEMS;] [Section
22 60 70 GAS AND VACUUM SYSTEMS FOR HEALTHCARE FACILITIES] [and] the ACGIH-2092S including provision for an adequate
supply of tempered make-up air to meet the air flow requirements of fume hood(s). Provide interlocks for controls
and alarms to maintain the required air balance between hood interiors and the room.
3.2 POSTED OPERATING INSTRUCTIONS
Provide in accordance with the requirements in Section 23 03 00.00 20 BASIC MECHANICAL METIRALS AND METHODS.
3.3 FIELD QUALITY CONTROL
3.3.1 Inspection
Examine each unit for visual defects, operation and conformance to specifications.
3.3.2 Tests
Test each unit to ensure that the equipment is operational and conforms to specification requirements. Field
tests for fume hood operation and performance shall meet the requirements of ACGIH-2092S.