July 22, 1994

Contract #TW0592

**SPECIAL SPECIFICATION**

**SECTION 10282**

**[AIR SHOWERS]{.underline}**

[Page]{.underline}

**[PART 1 - GENERAL]{.underline}**

1.01 Description. 2

1.02 Related Work. 2

1.03 References. 2

1.04 Submittals. 3

1.05 Delivery, Storage, and Handling. 4

**[PART 2 - PRODUCTS]{.underline}**

2.01 Acceptable Manufacturers. 5

2.02 Materials. 5

2.03 Equipment. 5

2.04 Fabrication.. 5

**[PART 3 - EXECUTION]{.underline}**

3.01 Installation/Application/Erection. 10

3.02 Commissioning. 10

3.03 Demonstration.. 10

**SPECIAL SPECIFICATION**

**SECTION 10282**

**[AIR SHOWERS]{.underline}**

**[PART 1 - GENERAL]{.underline}**

**1.01 [DESCRIPTION]{.underline}**

> A. This Section specifies the fabrication, installation, and start-up
> of air showers.

**1.02 [RELATED WORK]{.underline}**

> A. Section 01300
>
> B. Section 15023
>
> C. Section 15995

**1.03 [REFERENCES]{.underline}**

> A. Comply with the current editions of all the applicable codes and
> standards of technical societies and organizations in Section 15023
> and the following:
>
> 1\. Air Movement and Control Association (AMCA), AMCA 210 Laboratory
> Methods of Testing Fans for Rating Purposes
>
> 2\. AMCA 300 Test Code for Sound Rating Air Moving Devices
>
> 3\. AMCA 401 Fans, Standard Classifications for Spark Resistant
> Construction
>
> 4\. American Society of Mechanical Engineers (ASME), ASME PTC11 Test
> Code for Fans
>
> 5\. American Society for Testing and Materials (ASTM), ASTM A386 Zinc
> Coating (Hot-Dip) on Assembled Steel Products
>
> 6\. ASTM A525 Steel Sheet, Zinc Coated (Galvanized) by the Hot-Dip
> Process
>
> 7\. ASTM B209 Aluminum-Alloy Sheet and Plate
>
> 8\. ASTM B221 Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and
> tubes
>
> 9\. National Electrical Manufacturer\'s Association (NEMA), NEMA MG1
> Motors and Generators, MG-112.53b
>
> 10\. Institute of Electrical and Electronics Engineers (IEEE), IEEE
> 112, Method B
>
> 11\. Underwriter\'s Laboratories (UL), UL 507 Safety for Electric Fans
>
> 12\. Occupational Safety and Health Administration

**1.04 [SUBMITTALS]{.underline}**

> A. Make all submittals according to this Section, Section 15010, and
> Section 01300.
>
> B. Submit manufacturer\'s literature and certified prints to include
> the following:
>
> 1\. Performance data on manufacturer\'s selected fans.
>
> 2\. Fan sound power level (dB re 10-12 watts) for each octave band.
>
> 3\. Complete description of construction materials of units and
> accessories, including:
>
> a\. Fan.
>
> b\. Drive.
>
> c\. Dampers.
>
> d\. Isolators.
>
> e\. Insulation.
>
> f\. Special Coatings.
>
> g\. Companion Angles.
>
> h\. Lights.
>
> i\. Filters.
>
> j\. Nozzles.
>
> 4\. Physical and electrical characteristics of motors.
>
> 5\. Dimensions of units and accessories, including locations and sizes
> of:
>
> a\. Electrical connections.
>
> b\. Support points.
>
> c\. Access areas required.
>
> 6\. Shipping and operating weights of units and accessories.
>
> C. Submit shop drawings and include the following on the shop
> drawings:
>
> 1\. Installation details of units and all accessories.
>
> D. Submit recommended spare parts list; include description, quantity
> and price for each part.
>
> E. Submit detailed installation, operation and maintenance
> instructions.

**1.05 [DELIVERY, STORAGE, AND HANDLING]{.underline}**

> A. Deliver products to the project properly identified with names,
> model numbers, types, grades, compliance labels, and other information
> needed for identification.

**[PART 2 - PRODUCTS]{.underline}**

**2.01 [ACCEPTABLE MANUFACTURERS]{.underline}**

> A. Liberty Industries, Inc.
>
> B. Air Showers & Pass-Thrus.
>
> C. Scientific Air Systems.
>
> D. Comp-Aire System, Inc.

**2.02 [MATERIALS]{.underline}**

> A. Aluminum Sheet and Plate: 3003-H14 alloy, conforming to ASTM B209.
>
> B. Aluminum Extrusions: 6061-T6 or 6063-T52 alloy, conforming to ASTM
> B221.

**2.03 [EQUIPMENT]{.underline}**

> A. Provide factory-built air shower assembly with accessories as
> indicated in this Section.
>
> B. Meet the performance requirements indicated in this Section. Note
> that design data refers to \"Standard Air\" (air with density of 0.075
> lbs. per cubic foot at sea level, 29.92-inches (in.) mercury
> barometric pressure and 70 degrees Fahrenheit).

**2.04 [FABRICATION]{.underline}**

> A. Air Chamber
>
> 1\. Use 3/4-in., flakeboard construction thick covered with white
> plastic laminate both inside and out.
>
> a\. Trim: Anodized aluminum
>
> b\. Grilles: Structural aluminum
>
> c\. Doors: Anodized aluminum frame, incorporating 1/4-in. wire glass
>
> d\. Top over entire unit: Same construction as air chamber
>
> e\. Meet NFPA and underwriter\'s requirements of non-combustible
> construction to avoid the requirement for a sprinkler system.
>
> f\. Floor for Floor Return Units: Structural aluminum grating
>
> B. Blower Assembly
>
> 1\. Provide high pressure radial blade fan with electrical panel box
> located on mechanical section.
>
> 2\. Provide a blower that forces air through adjustable plastic or
> stainless steel nozzles at 7500 feet-per-minute. Locate the nozzles on
> each side and on top of each of the units. Provide a sufficient
> quantity of nozzles for each unit to ensure a minimum of 700
> air-changes-per-hour.
>
> 3\. Provide motor with these features: high-efficiency, single-speed,
> direct-drive, open-drip-proof, permanently-lubricated, and
> sealed-ball-bearings.
>
> 4\. Provide nominal efficiency per NEMA MG 1 Table 12-6C, when tested
> in accordance with test method IEEE 112 Method B for all high
> efficiency motors.
>
> 5\. Provide vibration isolation by doing the following:
>
> a\. Support each fan/motor assembly on resilient isolators that
> deflect statically at least 0.2 in. under the load.
>
> b\. Ensure that the structure to which the isolators are attached
> deflects (at the attachment point) no more than 0.02 in. due to the
> weight of the fan/motor assembly.
>
> C. Filtration
>
> 1\. Provide access to each of the two filter systems.
>
> 2\. Provide pre-filters which are 65-percent-efficient, ASHRAE filters
> and include magnehelic gauge to measure filter air flow resistance.
>
> 3\. Provide filters which are 99.99-percent-efficient in the removal
> of 0.3 micron particles, \[polystyrene latex (PSL) spheres method\]
> and include a magnehelic gauge to measure filter air flow resistance.
>
> D. Lighting
>
> 1\. Furnish fluorescent-type lighting which provides a minimum of
> 100-footcandle, average illumination. Recess the light fixtures in the
> ceiling of the air showers units. Use 277-volt (V), 1-phase (ph.),
> 60-hertz (Hz) lighting fixtures. Provide each light fixture with
> Magnetek Electronic Ballasts and 4-foot (ft.), 32W, T-8 lamps. Provide
> at least one T-8 lamp in each air shower with a separate Magnetek
> Electronic Ballast. Connect this separate ballast to operate only this
> single T-8 lamp, and provide power from a separate emergency lighting
> circuit as shown on the Drawings. Provide each air shower with two
> low-wattage, light switches. Do not provide the switches and wire
> which are to be provided by others.
>
> 2\. Provide one single-gang box for each switch and provide a 3/4-in.,
> electrical, metallic tubing (emt) from each box. Provide a nylon pull
> string in the emt conduit for later wiring by others. Provide each
> unit with a 20-ampere (A) circuit breaker in the equipment cabinet
> part of the air shower for use as a disconnecting means. Provide an
> access path from the circuit breaker to the bottom of the unit for use
> by the Contractor in providing electrical power to the circuit
> breaker. Provide a hole in the bottom of the unit for conduit to enter
> the unit from below. Provide a hinged access door on the outside of
> the unit away from the room wall to provide access to the circuit
> breaker. Mark this door as the access to the lighting and door circuit
> breaker. Wire the emergency light circuit directly to the light
> fixture; do not provide provisions for disconnection within the
> equipment cabinet.
>
> E. Power Requirements
>
> 1\. Provide 208-V, 3-ph., 60-Hz power which can be shut-down from
> either the inside or outside. Provide an alarm to indicate when the
> power is shut-down. Provide each air shower with integral starters and
> one power connection with a 30-A shunt trip circuit breaker in the
> equipment cabinet part of the air shower for use as a means of
> disconnect. Provide an access path from the circuit breaker to the
> bottom of the unit for use by the Contractor in providing electrical
> power to the circuit breaker. Provide a hole in the bottom of the unit
> for conduit to enter the unit from below. Provide a hinged access door
> on the outside of the unit away from the room wall to provide access
> to the circuit breaker. Mark this door as the access to the circuit
> breaker.
>
> 2\. Provide emergency push buttons on both the inside and the outside
> of both entrances of each unit to trip the shunt trip breaker in case
> of emergency.
>
> F. Operating Timer: 0 - 3 minutes adjustable timer.
>
> G. Provide a high static pressure and power loss alarm system with
> external light emitting diode.
>
> H. See Drawings 104490-A8 (for Types A and B) and 104490-A10 (for Type
> C) for information on the three types of air showers. Provide air
> return via the floor grating. Air shower sizes are indicated below.
>
> Type A Unit Dimensions:
>
> Outside: 5-ft.-8-in. wide by 6-ft.-2-in. long by 9 ft. from the
> finished raised floor to the top of the outside envelope by 2 ft. from
> the finished raised floor to the concrete subfloor.
>
> Inside: 4-ft.-8-in. wide by 5-ft.-2-in. long
>
> Type B Unit Dimensions:
>
> Outside: 6-ft. wide by 8-ft. long by 9 ft. from the finished raised
> floor to the top of the outside envelope by 2 ft. from the finished
> raised floor to the concrete subfloor.
>
> Inside: 5-ft. wide by 7-ft. long.
>
> Type C Unit Dimensions:
>
> Outside: 5-ft.-10-in. wide by 7-ft.-10-in. long by 9 ft. from the
> finished raised floor to the top of the outside envelope by 2 ft. from
> the finished raised floor to the concrete subfloor.
>
> Inside: 4-ft.-10-in. wide by 6-ft.-10-in. long.
>
> I. Design the air showers for two or three-way personnel traffic. See
> Reference Drawings 104490-A8 and 104490-A10 for more information.
> Provide automatic control for the air showers. Electrically interlock
> both doors and start the unit after entering the air shower. Operate
> the units on an adjustable timer for 0-3 minutes. Air shower personnel
> traffic is indicated below.
>
> Type A Air shower operational for personnel traffic flow to and from
> Deposition Area.
>
> Type B Air shower operational for personnel traffic flow to and from
> Final Assembly (inner tritium).
>
> Type C Air shower operational for personnel traffic flow to and from
> Particulate Contaminant Control and Final Assembly (non-tritium).
>
> J. Provide the units with interior access doors to each section for
> fan and filter maintenance. See architectural drawings for unit
> orientation and wall location.
>
> K. Provide support legs and anchorage details for the unit. Design the
> support legs and anchors for lateral and overturning seismic loads in
> accordance with section 2336 of the Uniform Building Code using Z =
> 0.22, I = 1.25, and Cp = 1.5. The units are supported on an elevated
> concrete slab on 1-1/2-inch metal deck for a total thickness of 5
> inches. Use adhesive or undercut anchors for anchorage to concrete. Do
> not use expansion anchors.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [INSTALLATION/APPLICATION/ERECTION]{.underline}**

> A. Install the units according to this Section, all codes and
> standards, and manufacturer\'s recommendations. Locate the air showers
> at locations shown on the Drawings.
>
> B. Provide a manufacturer\'s qualified representative to oversee the
> installation, start-up, and training of Sandia personnel for a minimum
> period of 2 working-days.
>
> C. Provide Zerk fittings at all lubrication points with extended leads
> to the inside of the access doors for easy accessibility.
>
> D. Lubricate fan and motor bearings prior to start-up.
>
> E. Identify units with metal tags.

**3.02 [COMMISSIONING]{.underline}**

> A. Provide labor, material, equipment, etc., required to facilitate
> the commissioning process.
>
> B. Perform form tests and verification procedures required by the
> commissioning process when requested by the Commissioning Authority
> and directed by the General Contractor. See Section 15995.

**3.03 [DEMONSTRATION]{.underline}**

> A. Provide the services of a factory-authorized service representative
> to start-up equipment, demonstrate operation, and train personnel.
>
> B. See Section 15995.
>
> END OF SECTION