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- SECTION 11610
-
- LABORATORY FUME HOODS
- NOTE ** Labconco Corporation, laboratory fume hoods; bench-
- mounted, radioisotope, perchloric acid, and walk-in
- types.
- NOTE **
- NOTE ** This section is based on the products of Labconco
- Corporation, which is located at:
- NOTE ** 8811 Prospect Avenue
- NOTE ** Kansas City, MO 64132
- NOTE ** Tel: (816) 333-8811
- NOTE ** Tel: (800) 821-5525
- NOTE ** Fax: (816) 363-0130
- NOTE ** E-mail: labconco@labconco.com
- NOTE ** Home Page: www.labconco.com
-
- NOTE ** Labconco Corporation is a manufacturer of
- laboratory equipment, including fume hoods, self-
- contained filtered laboratory enclosures, and
- biological safety cabinets. This section covers
- part of their product line: "Protector" laboratory
- fume hoods; bench-mounted types, by-pass and
- auxiliary air design configurations, vapor-proof
- and explosion-proof electrical configurations, with
- accompanying service fixtures, as well as by-pass
- air design radioisotope, perchloric acid, and walk-
- in type fume hoods. See their other sections for
- self-contained filtered laboratory enclosures and
- biological safety cabinets.
- NOTE **
- NOTE ** SECTION 11610 - LABORATORY FUME HOODS, Copyright
- 1998, The Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Delete items below not required for project. If
- multiple types or sizes of fume hoods are required
- for project, carefully modify this section for
- specific applications.
-
- A. Fiberglass bench-mounted fume hoods.
-
- B. Stainless steel radioisotope fume hoods with automatic by-
- pass air flow system for use with remotely-located
- motor/blower.
-
- C. Stainless steel perchloric acid fume hoods with automatic
- by-pass air flow system for use with remotely-located
- motor/blower.
-
- D. Fiberglass walk-in fume hoods with automatic by-pass air
- flow system for use with remotely-located motor/blower.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete sections below not relevant to this project;
- add others as required.
-
- A. Section 11600 - Laboratory Equipment.
-
- B. Section 12351 - Laboratory Casework.
-
- C. Section 15400 - Plumbing.
-
- D. Section 16200 - Electrical.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the project; add others as
- required.
-
- A. AGA - American Gas Association.
-
- B. ANSI Z 9.5 - Laboratory Ventilation.
-
- C. ASHRAE 110 - Method of Testing Performance of Laboratory
- Fume Hoods.
-
- D. ASTM E 84 - Surface Burning Characteristics of Building
- Materials.
-
- E. CGA - Canadian Gas Association.
-
- F. NFPA 45 - Fire Protection for Laboratories Using
- Chemicals.
-
- G. SEFA 1 - Laboratory Fume Hoods.
-
- H. ________________________________.
-
- 1.4 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's catalog data, specification
- sheets, and product manuals.
-
- C. Shop Drawings: Prepared specifically for this project;
- show dimensions and interface with other products.
-
- D. Selection Samples: Hood exterior wall material, interior
- liner and baffle, epoxy work surface material, and front
- panel color chips.
-
- 1.5 QUALITY ASSURANCE
-
- A. Maintain testing facility at manufacturer's place of
- business for testing and evaluating laboratory fume hoods
- under both ideal and adverse conditions, in accordance
- with ASHRAE Standard 110.
-
- B. Make manufacturing facility, testing facility, and
- quality control procedures available for owner
- inspection.
-
- C. Manufacturer Qualifications: Minimum 5 years
- manufacturing fume hoods as a principal product.
-
- 1.6 DELIVERY, STORAGE AND HANDLING
-
- A. Deliver fume hoods, work surfaces, and accessories free
- of damage.
-
- B. Store and handle in a manner to prevent damage to fume
- hoods, work surfaces, accessories, or adjacent work.
-
- 1.7 WARRANTY
-
- A. Warrant against defects in materials and workmanship on
- fume hoods, work surfaces, and accessories; include labor
- and replacement parts (except lamps).
-
- B. Warranty Period: One year from date of installation or
- two years from date of purchase, whichever is sooner.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Acceptable Manufacturer: Provide products made by
- Labconco Corporation, 8811 Prospect, Kansas City, MO
- 64132. ASD. Tel: (816) 333-8811 or (800) 821-5525.
- Fax: (816) 363-0130.
-
- B. Requests for substitutions will be considered in
- accordance with provisions of Section 01600.
- NOTE ** Delete paragraph above or below; coordinate with
- Division 1 requirements.
-
- C. Substitutions: Not permitted.
-
- D. Provide all laboratory fume hoods from a single
- manufacturer.
-
- 2.2 MANUFACTURED UNITS
- NOTE ** Select items below required for project. If
- multiple types or sizes of fume hoods are required,
- carefully modify subsequent paragraphs for specific
- applications.
-
- A. Fiberglass bench-mounted fume hoods.
-
- B. Stainless steel radioisotope fume hoods with automatic by-
- pass air flow system for use with remotely-located
- motor/blower.
-
- C. Stainless steel perchloric acid fume hoods with automatic
- by-pass air flow system for use with remotely-located
- motor/blower.
-
- D. Fiberglass walk-in fume hoods with automatic by-pass air
- flow system for use with remotely-located motor/blower.
- NOTE ** Select one of the following two subparagraphs for
- fiberglass bench-mounted fume hoods; delete both
- subparagraphs for other types of fume hoods (by-
- pass air flow is standard).
- 1. By-pass air flow design configuration.
- 2. Auxiliary air flow design configuration.
- NOTE ** Select one of the following two subparagraphs.
- 3. Vapor-proof electrical configuration.
- 4. Explosion-proof electrical configuration.
- NOTE ** Select one of the following two subparagraphs for
- fiberglass bench-mounted fume hoods; delete both
- subparagraphs for other types of fume hoods (remote
- blowers are standard).
- 5. For use with remote blowers.
- 6. For use with built-in blowers.
- NOTE ** Select one of the following two subparagraphs.
- 7. No service fixtures.
- 8. Remotely controlled service fixtures.
- NOTE ** Select one of the following three subparagraphs;
- the third is a custom option.
- 9. Vertical-rising sashes.
- 10. Horizontal sliding sashes.
- 11. Combination horizontal/vertical sliding sashes.
- NOTE ** Include the subparagraph below for fiberglass bench-
- mounted fume hoods with automatic by-pass air flow
- design and select size(s).
- 12. Size:
- a. 4 foot (1.22 m): 47 inches wide, 59 inches high,
- 32-1/4 inches deep (1.19 x 1.50 x 0.82 m).
- b. 5 foot (1.52 m): 59 inches wide, 59 inches high,
- 32-1/4 inches deep (1.50 x 1.50 x 0.82 m).
- c. 6 foot (1.83 m): 70 inches wide, 59 inches high,
- 32-1/4 inches deep (1.78 x 1.50 x 0.82 m).
- d. 8 foot (2.44 m): 96 inches wide, 59 inches high,
- 32-1/4 inches deep (2.44 x 1.50 x 0.82 m).
- NOTE ** Include the subparagraph below for fiberglass bench-
- mounted fume hoods with auxiliary air flow design
- and select size(s).
- 13. Size:
- a. 4 foot (1.22 m): 47 inches wide, 59 inches high,
- 42-1/4 inches deep (1.19 x 1.50 x 1.07 m).
- b. 5 foot (1.52 m): 59 inches wide, 59 inches high,
- 42-1/4 inches deep (1.50 x 1.50 x 1.07 m).
- c. 6 foot (1.83 m): 70 inches wide, 59 inches high,
- 42-1/4 inches deep (1.78 x 1.50 x 1.07 m).
- d. 8 foot (2.44 m): 96 inches wide, 59 inches high,
- 42-1/4 inches deep (2.44 x 1.50 x 1.07 m).
- NOTE ** Include the subparagraph below for either
- radioisotope fume hoods or perchloric acid fume
- hoods and select size(s).
- 14. Size:
- a. 4 foot (1.22 m): 47 inches wide, 59 inches high,
- 32-1/4 inches deep (1.19 x 1.50 x 0.82 m).
- b. 5 foot (1.52 m): 59 inches wide, 59 inches high,
- 32-1/4 inches deep (1.50 x 1.50 x 0.82 m).
- c. 6 foot (1.83 m): 70 inches wide, 59 inches high,
- 32-1/4 inches deep (1.78 x 1.50 x 0.82 m).
- NOTE ** Include the subparagraph below for walk-in fume
- hoods and select size(s).
- 15. Size:
- a. 5 foot (1.52 m): 59 inches wide, 95 inches high,
- 32-1/4 inches deep (1.50 x 2.41 x 0.82 m).
- b. 6 foot (1.83 m): 70 inches wide, 95 inches high,
- 32-1/4 inches deep (1.78 x 2.41 x 0.82 m).
- c. 8 foot (2.44 m): 96 inches wide, 95 inches high,
- 32-1/4 inches deep (2.44 x 2.41 x 0.82 m).
-
- 2.3 MATERIALS
-
- A. Sheet Steel: ASTM A 366.
-
- B. Stainless Steel: ASTM A 167, types as specified.
- NOTE ** Select paragraph below for bench-mounted fiberglass
- fume hoods.
-
- C. Work Surfaces for Bench-Mounted Fume Hoods: Black epoxy
- resin.
- NOTE ** Select paragraph below for walk-in fume hoods.
-
- D. Floor Surfaces for Walk-In Fume Hoods: Black epoxy
- resin.
-
- 2.4 FINISHES
-
- A. Exterior Sheet Steel Surfaces: Properly prepared and
- coated, electrostatically applied.
- 1. Hood Exterior: Epoxy coating, dry powder.
- NOTE ** Select one of the following two subparagraphs; the
- first is standard, the second is optional.
- 2. Hood Front Panel: Baked-on dry powder epoxy coating,
- electrostatically applied; glacier white.
- 3. Hood Front panel: Wet enamel overspray, color
- selected by Architect.
-
- B. Stainless Steel: Finishes as specified.
-
- C. Fiberglass Interior Liners and Baffles: Chemically-
- resistant white gel-coat, flame spread less than 25 per
- ASTM E 84.
-
- 2.5 COMPONENTS
-
- A. Hood Exteriors: Minimum 20 gage cold-rolled sheet steel.
- NOTE ** Select the following paragraph for bench-mounted
- fume hoods and walk-in fume hoods.
-
- B. Hood Interior Liners: One-piece molded fiberglass
- reinforced polyester resin, minimum 3/16 inch (5 mm)
- thick, with coved corners; no interior access panels.
- (Maintenance performed from front of hood.)
-
- C. Baffles: Removable, tamper-resistant one-piece molded
- fiberglass reinforced polyester resin, minimum 3/16 inch
- (5 mm) thick.
- NOTE ** Select the following paragraph for radioisotope
- fume hoods.
-
- D. Hood Interior Liners, Baffles, and Work Surfaces: One-
- piece Type 304 stainless steel welded construction,
- minimum 20 gage, with 5 inch (127 mm) cupsink, coved
- corners, joints ground smooth and polished; no interior
- access panels. (Maintenance performed from front of
- hood.)
- NOTE ** Select the following paragraph for perchloric acid
- fume hoods.
-
- E. Hood Interior Liners, Baffles, and Work Surfaces with
- Drain Trough: One-piece Type 316 stainless steel welded
- construction, minimum 20 gage, fully coved corner, bottom
- with drain trough at rear, joints ground smooth and
- polished; no interior access panels. (Maintenance
- performed from front of hood.)
- NOTE ** Select subparagraph below if walk-in fume hoods are
- not specified.
- 1. Provide baffles without slots or adjustment
- capability.
- NOTE ** Delete subparagraph above and include subparagraphs
- below for walk-in fume hoods. Delete subparagraphs
- below for all other types of fume hoods.
- 2. Provide adjustment capability at upper edge of lower
- baffles.
- 3. Provide other baffles without slots or adjustment
- capability.
-
- F. Corner Covers: 20 gage stainless steel, pre-punched and
- plugged to accommodate up to four service fixtures and
- two electrical boxes on each side.
-
- G. Hood Rear Exterior Panels: 16 gage galvanized sheet
- steel.
- NOTE ** Select paragraph below for bench-mounted and walk-
- in fume hoods.
-
- H. Belled Entry Cones, Belled Exhaust Connection and
- Condensation Collection Rings: LS 8200 PVC(R) as
- manufactured by Georgia Gulf Company; include neoprene
- drain hose.
- NOTE ** Select paragraph below for radioisotope fume hoods.
-
- I. Exhaust Connection Rings: Type 304 stainless steel.
- NOTE ** Select paragraph below for perchloric acid fume
- hoods.
-
- J. Duct Connections: Type 316 stainless steel.
- NOTE ** Select paragraph below for bench-mounted and walk-
- in fume hoods.
-
- K. Hose Connectors: Injection molded PVDF - Kynar7.
- NOTE ** Select paragraph below for radioisotope and
- perchloric acid fume hoods.
-
- L. Hose Connectors: Chrome-plated brass.
-
- M. Hood Sashes: 3/16 inch (5 mm) thick tempered safety
- glass surrounded in an extruded polyvinyl chloride (PVC)
- frame.
- NOTE ** Delete paragraph below if only walk-in fume hoods
- are specified.
-
- N. Sash Foils: 14 gage cold-rolled steel, epoxy coated.
- NOTE ** Select items below required for the project.
- Specialty service fixtures are available upon
- request, including oxygen with specially cleaned
- and lubricated valve, cold water gooseneck with
- vacuum breaker, and stainless steel valves with
- stainless steel lines for purified water.
-
- O. Hood Service Fixtures: 1/4 inch (6 mm) copper tubing,
- forged brass valves and seats, TFE-coated silicone bronze
- stem, TFE packing, and injection-molded PVDF 10-serration
- hose connectors.
- 1. Fixture Handles: Anti-snag, round plastic without
- projections; color-code and label for designated
- service.
-
- P. Gas Valves: AGA/CGA listed with tin-lined copper service
- lines.
- NOTE ** Select paragraph below for vapor-proof bench-
- mounted and vapor-proof walk-in fume hoods.
-
- Q. Fluorescent Light Fixtures: Two-tube fixtures (tubes
- included).
- NOTE ** Select paragraph below for explosion-proof bench-
- mounted and explosion-proof walk-in fume hoods, and
- for all radioisotope and perchloric acid fume
- hoods.
-
- R. Incandescent Light Fixtures: Explosion-proof 100-watt,
- 115-volt, 50/60 Hz fixtures (bulbs included).
- NOTE ** Select paragraph below for bench-mounted fume
- hoods.
-
- S. Work Surfaces, Bench-Mounted Fume Hoods: 1-1/4 inches
- (32 mm) thick, 3/8 inch (10 mm) deep dished solid epoxy
- resin surface conforming to hood interior.
- NOTE ** Select paragraph below for radioisotope fume hoods.
-
- T. Work Surfaces, Radioisotope Fume Hoods: Type 304
- stainless steel, 1/4 inch (6 mm) deep dished seamless
- surface welded to hood interior, joints ground smooth and
- polished; provide supporting substrate to satisfactorily
- mount hood to base cabinet.
- NOTE ** Check local codes for possible required treatment
- of effluent water before including the following
- paragraph.
- 1. Stainless steel cup sink, 5 inch (127 mm) diameter,
- left front, with 1-1/2 inch (38 mm) drain.
- NOTE ** Select paragraph below for perchloric acid fume
- hoods.
-
- U. Work Surfaces, Perchloric Acid Fume Hoods: Type 316
- stainless steel, 1/4 inch (6 mm) deep dished seamless
- surface welded to hood interior, joints ground smooth
- and polished; provide supporting substrate to
- satisfactorily mount hood to base cabinet.
- NOTE ** Check local codes for possible required treatment
- of effluent washdown water before including the
- following paragraph.
- 1. Washwater drain trough at rear edge, with 2 inch (50
- mm) drain connection at right end.
- NOTE ** Select paragraph below for walk-in fume hoods.
-
- V. Floor Surfaces: 1-1/4 inches (32 mm) thick surface
- conforming to hood interior.
- NOTE ** The following options are available for walk-in
- fume hoods. Distillation grid design can vary;
- consult manufacturer. Distillation grid is not
- factory installed, as hood is shipped in two
- pieces; supporting holes in liner with collar
- mounted will be provided in liner walls for field
- installation of grid.
-
- W. Work Surfaces, Walk-In Fume Hoods: 1-1/4 inches (32 mm)
- thick, with 6 inch by 3 inch (150 x 75 mm) oval cutouts
- to clear molded cup sinks.
-
- X. Removable Internal Support Bench (to convert hood for
- distillation use): 1 inch (25 mm) thick epoxy, 15 inches
- (380 mm) high by 15 inches (380 mm) deep by internal
- width of fume hood.
- NOTE ** Choose distillation grid in the following paragraph
- from 316 stainless steel, aluminum, or fiberglass
- 1/2 inch (13 mm) diameter rods, 316 stainless steel
- or aluminum connectors.
-
- Y. Distillation Grid: ________________________.
-
- 2.6 FABRICATION
- NOTE ** Select any of the following four paragraphs
- required for project.
-
- A. Fabricate bench-mounted fume hoods in one piece, double
- wall construction, epoxy coated cold-rolled steel
- exterior, gel-coated fiberglass reinforced polyester
- internal liner and baffle, able to pass through a 33 inch
- (0.84 m) opening without disassembly.
-
- B. Fabricate radioisotope fume hoods in one piece, double
- wall construction, epoxy coated cold-rolled steel
- exterior, type 304 stainless steel internal liner and
- baffle, joints welded and ground smooth, able to pass
- through a 33 inch (0.84 m) opening without disassembly.
-
- C. Fabricate perchloric acid fume hoods in one piece, double
- wall construction, epoxy coated cold-rolled steel
- exterior, type 316 stainless steel internal liner and
- baffle, able to pass through a 33 inch (0.84 m) opening
- without disassembly.
-
- D. Fabricate walk-in fume hoods as two individual
- assemblies, double wall construction, epoxy coated cold-
- rolled steel exterior, gel-coated fiberglass reinforced
- polyester internal liner and baffle, each assembly able
- to pass through a 33 inch (0.84 m) opening without
- further disassembly.
- NOTE ** Select paragraph below for 4, 5, and 6 foot (1.22,
- 1.52, and 1.83 m) hoods with vertical rising sash
- assemblies.
- 1. Provide vertical rising 3/16 inch (5 mm) thick
- tempered safety glass sash framed with extruded
- polyvinyl chloride; epoxy-coated steel sash tracks;
- single counterbalance weight.
- NOTE ** Paragraph below is standard for 8 foot (2.44 m)
- hoods.
- 2. Provide postless dual vertical rising sash of
- independent sash assemblies, 3/16 inch (5 mm) thick
- tempered safety glass framed with extruded polyvinyl
- chloride; epoxy-coated steel sash tracks; single
- counterbalance weight.
- NOTE ** Paragraph below is optional for 4 foot (1.22 m) by-
- pass hoods. Horizontal sashed hoods are not
- available in auxiliary-air configurations.
- 3. Provide two horizontal sliding panels, 3/16 inch (5
- mm) thick tempered safety glass sash, each framed
- with extruded polyvinyl chloride; epoxy-coated steel
- sash tracks; single counterbalance weight.
- NOTE ** Paragraph below is optional for 5, 6,and 8 foot
- (1.52, 1.83, and 2.44 m) by-pass hoods. Horizontal
- sashed hoods are not available in auxiliary-air
- configurations.
- 4. Provide four horizontal sliding panels, 3/16 inch (5
- mm) thick tempered safety glass sash, each framed
- with extruded polyvinyl chloride; epoxy-coated steel
- sash tracks; single counterbalance weight.
- NOTE ** Combination sashes are available on some hood sizes
- and designs. Contact the manufacturer and select
- from one of the two subparagraphs following.
- 5. Combination Sash: Two horizontal sliding sashes in
- an epoxy coated vertical rising frame; single
- counterbalance weight.
- 6. Combination Sash: Four horizontal sliding sashes in
- an epoxy coated vertical rising frame; single
- counterbalance weight.
- NOTE ** Select paragraph below for by-pass fume hoods.
-
- E. Fabricate by-pass fume hoods to minimize face velocity
- fluctuations as sash is raised or lowered.
- NOTE ** Select paragraph below for bench-mounted by-pass
- fume hoods.
- 1. Inflow velocity with sash positioned 6 inches (150
- mm) above air foil: Not less than twice the selected
- full open face velocity, nor greater than three times
- that amount.
- NOTE ** Select paragraph below for bench-mounted auxiliary
- air fume hoods.
-
- F. Fabricate auxiliary-air fume hoods with by-pass air
- feature to minimize face velocity fluctuations as sash is
- raised or lowered.
- 1. Inflow velocity with sash positioned 6 inches (150
- mm) above air foil: Not less than twice the selected
- full open face velocity, nor greater than three times
- that amount.
- 2. Introduce auxiliary air above sash face as an
- integral part of hood superstructure with removable
- plenum air deflector.
- 3. Provide up to a maximum of 50 percent ratio of
- auxiliary air to total air exhaust volume, as
- determined by the intended application.
- 4. Measure exhaust air volume with sash fully open and
- auxiliary air off, to develop face velocity profile.
- NOTE ** Select paragraph below for bench-mounted and walk-
- in fume hoods.
-
- G. Equip fume hoods with belled entry cones, complete with
- condensation collectors and drain tubes, providing for
- exhaust connection leading from fume cavity.
- NOTE ** Select paragraph below for radioisotope fume hoods.
-
- H. Equip fume hoods with duct connections.
- NOTE ** Select paragraph below for perchloric acid fume
- hoods.
-
- I. Equip fume hoods with internal washdown systems to wash
- behind baffle, serviced by additional cold water valve
- and supply lines. Provide connection points, plugged
- upon delivery, for connecting to internal manifold for
- feed to duct system wash rings.
-
- J. Equip fume hoods with interchangeable lift-away side
- panels and removable front panels to access plumbing
- fixtures, electrical wiring, counterbalance sash weights,
- and lighting fixtures; access all services from front of
- hoods.
-
- K. Mount corner covers vertically on each side of hood sash
- openings to access plumbing lines and valve connections
- from front of hoods.
- NOTE ** Select paragraph below for bench-mounted,
- radioisotope, and perchloric acid fume hoods.
-
- L. Provide minimum 4 inch (100 mm) wide air foil directly
- across bottom of sash opening, allowing air to bypass
- underneath and sweep across work surface and preventing
- back flow of fumes at front of hood. Extend air foil
- back under sash to prevent closure of lower by-pass
- opening when sash is fully closed.
- NOTE ** Select paragraph below for walk-in fume hoods.
-
- M. Provide 1 inch (25 mm) high air passage directly across
- bottom of sash opening, allowing air to bypass underneath
- and sweep across floor surface and preventing back flow
- of fumes at front of hood.
- NOTE ** Select paragraph below for 4, 5, and 6 foot (1.22,
- 1.52, and 1.83 m) fume hoods.
-
- N. Counterbalance sash with a single weight suspended by two
- vinyl coated stainless steel cables passing through nylon
- ball bearing pulleys.
- NOTE ** Select paragraph below for 8 foot (2.44 m) fume
- hoods with dual vertical-rising sash.
-
- O. Counterbalance each sash assembly with individual
- weights, each suspended by two vinyl coated stainless
- steel cables passing through nylon ball bearing pulleys.
- NOTE ** Paragraph below is standard for 5 and 6 foot (1.52
- and 1.83 m) walk-in fume hoods.
-
- P. Counterbalance dual telescoping vertical-rising sash with
- a single weight for the top sash, dual weights for the
- bottom sash, suspended by two vinyl coated stainless
- steel cables passing through nylon ball bearing pulleys.
- NOTE ** Select paragraph below for 8 foot (2.44 m) walk-in
- fume hoods; horizontal sliding sash assembly is
- optional for 5 and 6 foot (1.52 and 1.83 m) walk-in
- fume hoods.
-
- Q. Provide four-piece horizontal sliding sash system in dual
- track.
- NOTE ** Select one of the two paragraphs below for 4, 5,
- and 6 foot (1.22, 1.52, and 1.83 m) bench-mounted
- and perchloric acid fume hoods.
-
- R. Service fixtures are not required.
-
- S. Provide four fixtures located inside fume hood cavity,
- capable of hot and cold water, natural gas, air, vacuum,
- nitrogen, argon, and low pressure steam services.
- NOTE ** Select paragraph below for radioisotope fume hoods.
-
- T. Provide three fixtures located inside fume hood cavity,
- capable of hot and cold water, natural gas, air, vacuum,
- nitrogen, argon, and low pressure steam services.
- NOTE ** Paragraph below is standard for 8 foot (2.44 m)
- hoods.
-
- U. Provide six fixtures located inside fume hood cavity,
- capable of hot and cold water, natural gas, air, vacuum,
- nitrogen, argon, and low pressure steam services.
- NOTE ** Select paragraph below for walk-in fume hoods.
-
- V. Provide swing-type gooseneck cold water fixtures with
- vacuum breaker; mount over molded 6 inch by 3 inch (150 x
- 75 mm) cupsink with 1-1/4 inch (32 mm) standard drain
- connection.
- NOTE ** Select one subparagraph below. Walk-in fume hoods
- can have one or two goosenecks.
- 1. Left rear.
- 2. Right rear.
- 3. One at left rear and one at right rear.
- NOTE ** Delete four paragraphs below if service fixtures
- are not required. Select all four paragraphs for
- bench-mounted and walk-in fume hoods with service
- fixtures; delete first paragraph and select
- remaining three paragraphs for radioisotope and
- perchloric acid fume hoods with service fixtures.
-
- W. Orient hose connectors to the rear of fume hoods.
-
- X. Orient hose connectors to be readily accessible without
- exposing operator's breathing zone to fume hood interior.
-
- Y. Completely pre-plumb services using 1/4 inch (6 mm) tin-
- lined copper tubing for upper right-hand gas fixture, 3/8
- inch (10 mm) copper tubing for cold water gooseneck
- fixtures, 1/4 inch (6 mm) copper tubing for other
- fixtures.
-
- Z. Provide minimum 66 inch (1.67 m) feed lines to service
- fixtures.
- NOTE ** Select paragraph below for 4, 5, and 6 foot (1.22,
- 1.52, and 1.83 m) vapor-proof bench-mounted fume
- hoods and for 5 and 6 foot (1.52 and 1.83 m) vapor-
- proof walk-in fume hoods.
-
- AA. Provide fluorescent light fixture located behind tempered
- glass safety shield, serviceable from outside fume hood
- cavity. Include light switch, blower switch, and all
- internal wiring to circuit junction boxes located in
- upper right and/or left front of plenum area.
- NOTE ** Select paragraph below for 8 foot (2.44 m) vapor-
- proof bench-mounted fume hoods and for 8 foot (2.44
- m) vapor-proof walk-in fume hoods.
-
- BB. Provide two fluorescent light fixtures located behind
- tempered glass safety shield, serviceable from outside
- fume hood cavity. Include light switch, blower switch,
- and all internal wiring to circuit junction boxes located
- in upper right and/or left front of plenum area.
- NOTE ** Select paragraph below for 4, 5, and 6 foot (1.22,
- 1.52, and 1.83 m) explosion-proof bench-mounted
- fume hoods and for 5 and 6 foot (1.52 and 1.83 m)
- explosion-proof walk-in fume hoods.
-
- CC. Provide incandescent light fixture without internal
- wiring, switches, or receptacles.
- NOTE ** Select paragraph below for 8 foot (2.44 m) bench-
- mounted explosion-proof fume hoods, 8 foot (2.44 m)
- walk-in explosion-proof fume hoods, 4 and 5 foot
- (1.22 and 1.52 m) radioisotope vapor-proof, 4 and 5
- foot (1.22 and 1.52 m) perchloric acid explosion-
- proof fume hoods, 4, 5, and 6 foot (1.22, 1.52, and
- 1.83 m) explosion-proof radioisotope fume hoods,
- and 4, 5, and 6 foot (1.22, 1.52, and 1.83 m)
- explosion-proof perchloric acid fume hoods.
-
- DD. Provide two incandescent light fixtures without internal
- wiring, switches, or receptacles.
- NOTE ** Select paragraph below for 6 foot (1.83 m)
- radioisotope vapor-proof fume hoods and 6 foot
- (1.83 m) perchloric acid vapor-proof fume hoods.
- EE. Provide three incandescent light fixtures without
- internal wiring, switches, or receptacles.
- NOTE ** Select paragraph below for 4, 5, and 6 foot (1.22,
- 1.52, and 1.83 m) vapor-proof bench-mounted fume
- hoods and vapor-proof perchloric acid fume hoods.
-
- FF. Provide one 115-volt, 3-wire polarized and grounded
- electrical duplex receptacle mounted in right corner
- cover assembly; wire to separate electrical circuit.
- NOTE ** Select paragraph below for 8 foot (2.44 m) vapor-
- proof bench-mounted fume hoods.
- GG. Provide two 115-volt, 15-amp, 60 Hz electrical duplex
- receptacles, one mounted on each side; wire receptacles
- to separate electrical circuits.
- NOTE ** Select paragraph below for 4, 5, and 6 foot (1.22,
- 1.52, and 1.83 m) vapor-proof radioisotope fume
- hoods.
-
- HH. Provide one 115-volt, 3-wire polarized and grounded
- electrical duplex receptacle mounted in right corner
- cover assembly and one 230-volt 10-amp receptacle mounted
- on right side; wire receptacles to separate electrical
- circuits with 230-volt receptacle sheathed in flex
- conduit coiled in the plenum without junction box.
- NOTE ** Select paragraph below for vapor-proof walk-in fume
- hoods.
-
- II. Provide two 115-volt, 3-wire polarized and grounded
- electrical duplex receptacles, one mounted in each corner
- cover assembly; wire receptacles to separate electrical
- circuits.
- NOTE ** Select two paragraphs below for bench-mounted fume
- hoods.
-
- JJ. Provide work surfaces with cutout relief holes for
- passage of service utility lines.
-
- KK. Provide vent holes at rear edge of work surfaces for
- connection to provision for venting of acid or solvent
- storage cabinets.
- NOTE ** Select paragraph below for walk-in fume hoods.
-
- LL. Provide floor surfaces with cutout relief holes for
- passage of service fixture lines.
- NOTE ** Select first paragraph below for 4 and 5 foot (1.22
- and 1.52 m) fume hoods; select second paragraph
- for 6 and 8 foot (1.83 and 2.44 m) fume hoods.
- 1. Quantity: One.
- 2. Quantity: Two.
- NOTE ** Delete paragraphs below that are not required for
- the project.
-
- MM. Provide 6 inch by 3 inch (150 by 75 mm) oval epoxy
- cupsinks in work surfaces, each with 1-1/2 inch (38 mm)
- drain connection.
- NOTE ** Select subparagraph below for quantity required.
- 1. Quantity: One.
- 2. Quantity: Two.
- 3. Quantity: _________.
-
- NN. Factory-modify fume hoods to include bypass block, sash
- position alarm, and sash stop(s) to conserve air loss.
-
- OO. Provide face velocity alarms to monitor hood performance,
- for factory or field installation.
- NOTE ** The following paragraph is an option for vapor-
- proof fume hoods, however, consideration should be
- given to explosion-proof fume hoods for this
- situation.
-
- PP. Provide fire suppression system for installation in fume
- hood interior.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
-
- A. Verify equipment rough-in before proceeding with work,
- including rough opening dimensions required for fume hood
- installation.
-
- B. Coordinate with other trades for proper installation of
- plumbing and electrical services.
-
- 3.2 INSTALLATION
-
- A. Install in accordance with manufacturer's instructions;
- comply with standards required by authorities having
- jurisdiction.
-
- B. Install equipment plumb, square, and straight, without
- distortion; securely anchor.
-
- C. Schedule installation to ensure that utility connections
- are achieved in an orderly and expeditious manner.
-
- D. Demonstrate fume hood operations and functions to Owner
- at completion of installation.
-
- 3.3 ADJUSTING AND CLEANING
-
- A. Adjust operating equipment, with the exception of air
- moving equipment, to provide efficient operation for
- intended use and as required by manufacturer.
- NOTE ** Select subparagraph below for fume hoods with
- vertical-rising sashes.
- 1. Vertical-Rising Sashes: Operate smoothly without
- tilting when raised or lowered from either end;
- remain at rest in any open position.
- NOTE ** Select subparagraph below for fume hoods with
- horizontal sliding sashes.
- 2. Horizontal Sliding Sashes: Operate smoothly without
- binding.
-
- B. Clean equipment, casework, countertops, and other
- surfaces as recommended by manufacturer, rendering work
- in new and unused appearance.
-
- C. Clean adjacent construction and surfaces soiled in the
- course of installation of this work.
-
- D. Touch up minor damaged surfaces caused by installation.
- Replace damaged components as directed by Architect.
-
- 3.4 PROTECTION
-
- A. Provide protective measures to prevent equipment and
- surfaces from exposure to other construction activity.
-
-
- END OF SECTION
-