REV._Blower_125hp_Centrifugal_Extra_Quiet_Spec_no_Figures_7-12-2018.pdf

SPECIFICATION FOR

SILENCED 125 Hp PORTABLE VENTILATION BLOWER

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Reference (1) “Blower, 125hp, Centrifugal, Figures, NO SPEC.doc”

1 SCOPE

1.1 General - See Figure 4 in Reference (1). This specification reflects those characteristics that are essential to the minimum needs of the government for the procurement of a PORTABLE, INDUSTRIAL

DUTY, VENTILATION BLOWER supplied completely assembled, wired, tested, and ready for immediate use upon receipt, except that the silencers and transitions may be unbolted from the blower for shipment.

1.2 Intended Application - The portable ventilation blower will be used in temporary ventilation systems used to exhaust fumes and potentially explosive gases from confined spaces and other areas. The arrangement of the connected system will be changed frequently so the fan performance is specified as two CFM and static pressure points. Air exhausted by the system is not filtered and may contain light dust and occasional small debris from metalworking, woodworking, welding, plasma cutting, and coatings removal and application. The blower will be operated and stored in the weather, in a high abuse industrial environment at Puget Sound Naval Shipyard in Bremerton, Washington. The blower will be frequently moved by crane, truck, and forklift while fully assembled. Other than durability, the most important system design constraint is small footprint.

2 Summary of Supporting Deliverables – This paragraph contains drawings, documentation, notifications and test certification which warrant separate deliverables in addition to the delivery of the equipment described in the

Scope of this document. Contractor/manufacturer shall notify Contracting Officer, upon shipment, via email, that the item(s) in question has been shipped and include shipping company, tracking information, and estimated time of delivery as applicable.

Some or all tests listed in Testing Section of specification do not appear on this list. C/270TS has determined that asking for test data sheets to be submitted as part of the Post –deliverable Manual is adequate for these items.

Additional testing requirements and standards (e.g. ASTM B117 Salt Spray Test) are referenced in this specification to identify selection criteria for individual parts; however, certification is only required as listed below:

2.1 Pre-Deliverables:

2.1.1 Drawing: Pre-construction component sketch or drawing

Item: Blower assembly

Performance: Prior to Construction: The fan curve and a sketch or drawing, in “.pdf” format, shall be delivered to the contracting officer for technical acceptability based on the specification requirements.

Submitted data shall include the arrangement of the Mounting Base, motor, motor controller, silencers, transitions with approximate dimensions. The drawing shall show two plan views, one from the motor end and another with the blower rotated 90 degrees. The drawing may be developed using methods of the vendor (e.g. hand drawn or Computer Aided Drafting Sofware) and shall be delivered no more than

10 days after award.

2.1.2 Calculations: Lifting Structure Design Calculations

Items: Blower assembly

Performance: Prior to Delivery: Lifting Structure Design Calculations in accordance with the Skid and

Lifting Structure Calculations section of this specification, and stamped by a Licensed Professional

Structural Engineer shall be delivered to the contracting officer for technical acceptability based on the specification requirements. Lifting Structure Design Calculations shall be delivered no more than 31 days after award.

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2.2 Post-Deliverables:

2.2.1 Manual: Engineering Data Manual

Item: Blower assembly

Performance: Three hard copies of the data listed in the Engineering Documents section of this specification shall be delivered within 30 days of the initial blower delivery. If more than one blower is ordered, only three total sets of data are required. Each set shall include both a paper copy and a copy of the data on CD. Electronic copies shall include electronic drawing files created for unit design (if

CAD, AutoCad or Solid Edge 3D format preferred but not required).

3 REQUIREMENTS

3.1 Capabilities to be provided

3.1.1 Blower Performance - Rated performance at .075 lb/ft2 density and 70°F:

a. 8500 CFM at 51.5 (+7/-2) inches water gage.

b. 14,000 CFM at 41.5 (+4/-2) inches water gage.

c. The peak horsepower point on the fan performance curve shall be between 120 Hp and 128 Hp.

d. The peak in the static pressure curve shall be 8000 CFM or less.

3.2 Limitations and Conditions of Service

3.2.1 Operating Environment - The proposed system will be operated in a heavy industrial environment and shall be capable of continuous operation with minimal maintenance and upkeep. The ventilation blower unit shall be suitable for operation in an outdoor industrial environment, at variable ambient and blower air inlet temperatures of 20oF to 104oF, with humidity up to 100%, in a dust-laden atmosphere, wind-driven rain, sleet, snow, and light salt spray.

3.2.2 Electrical - The equipment delivered and all accessory parts shall operate from a single source of primary power (460 VAC, three phase, 60 Hz).

3.2.3 Sound pressure level - During operation at 14,000 CFM, with silencers and the specified transitions installed, tested with 18” diameter, 0.1” or thinner aluminum inlet and outlet duct (with no acoustic or thermal treatment) connected, the sound pressure level of the fan assembly shall not exceed 72 dBA

(reference pressure 20 micropascals, μPa) at 1 m from the major vertical surfaces of the machine at a height of 1.5 m above the floor or walk level. See Testing Section of this specification for testing requirements. Sound pressure levels shall be measured at the vendor’s facility in accordance with ASME

PTC 36-2004. Out of specification conditions shall be corrected prior to delivery.

3.3 Equipment to be provided - The fan shall include, but not be limited to the following capabilities, characteristics, and performance specifications necessary to meet the operational and performance requirements specified herein:

3.3.1 Silencers - Heavy-duty, industrial inlet and outlet silencers shall be provided. The outlet silencer shall connect directly to the fan discharge. The inlet silencer shall connect directly to the fan inlet box.

3.3.1.1 General Silencer and Fan Inlet Box Characteristics:

a. Inlet and outlet flanges with bolt holes.

b. Flanges wider than 2 inches shall be reinforced with gussets the width of the flange no more than 12” apart and at the corners.

c. All metal components constructed of stainless steel alloy 304, 304L, 316, or 316L (UNS S30400, S30403, S31600, or S31603).

d. Outside wall minimum thickness: 3/16”

e. Flange minimum thickness: 3/8”

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f. No rivets and no spot welding shall be used, except these methods are permitted for attaching labels.

g. Welds shall have a minimum length of one inch.

h. Fill shall be shed-resistant fiberglass, separated from the perforated lining by fiberglass cloth and a wire mesh spacer (stainless steel screen, 0.08” minimum wire x ¾” maximum mesh). Mineral wool fill shall not be used. Material shall be installed in the order shown in Figure 1 in Reference (1).

i. Label plates shall show airflow direction, silencer manufacturer, and model number.

j. Label plates shall meet the construction requirements of the label plate section of this specification.

k. Manufactured by a company whose primary business is the manufacture of silencers.

l. Acoustic performance and aerodynamic data shall be based upon testing conducted in accordance with ASTM E477-99, which may have been performed on a different size silencer.

m. Dimensions as required to comply with Figure 4 in Reference (1).

n. Rigid structure shall connect the tops of the inlet and outlet silencers.

o. Lifting padeyes are required.

p. Debur and remove sharp edges on flanges, padeyes, and all edges which are exposed to the weather when the silencers and fan inlet box are installed on the blower.

q. No coating is required.

3.3.1.2 Inlet silencer - Shall be an elbow style dissipative silencer similar to Figure 4 in Reference (1). The inlet silencer shall have the following characteristics:

a. The outlet flange shall bolt directly to the flanged inlet of the acoustically lined fan inlet box.

b. Static pressure drop at 14,000 CFM shall not exceed .85 inches w.g.

c. The silencer inlet shall be 71” (+/- ½”) wide, inside dimension.

d. Low point of the silencer inlet flange shall be at least 82” above grade. High point of the silencer inlet flange shall be 132” above grade, or less.

e. Supported by the fan inlet box and/or the fan Mounting Base via bolted connections.

3.3.1.3 Outlet silencer - Shall be an elbow silencer designed for connection directly to a fan discharge.

a. The silencer inlet flange shall be bolted directly to a matching flange on the fan housing outlet and shall have the same interior dimensions.

b. Static pressure drop at 14,000 CFM shall not exceed 1.75 inches w.g.

c. Silencer outlet shall be 53” (+/- ½”) wide, inside dimension.

d. The fan Mounting Base shall include a separate, bolted structural support under the silencer, between the silencer center of gravity and the silencer outlet.

e. Low point of the silencer outlet flange shall be at least 82” above grade. High point of the silencer outlet flange shall be 132” above grade, or less.

3.3.1.4 Fan Inlet Box – Shall be an acoustically lined inlet box designed and constructed by the inlet silencer manufacturer to provide proper airflow into the blower and withstand the peak vacuum of the blower.

a. Shall include a splitter plate to limit air swirl at the fan inlet when airflow through any one of the three intakes is zero. The splitter plate shall be welded to the inlet box interior along the edge, every

5” or less.

b. At the Fan Inlet Box inlet, the perforated lining shall be continuous with (in the same plane as) the perforated lining of the inlet silencer.

c. Drain connection (1” diameter or larger) with brass or stainless steel ball valve at lowest point.

d. Supported by the fan Mounting Base via bolted connections.

3.3.2 Inlet and Outlet Transitions:

a. Square to round transitions, similar to Figure 2 in Reference (1).

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b. Constructed of 0.078” thickness, minimum, stainless steel. Rectangular flange of 0.25” x 2” x 2”, minimum, angle. Round flanges 3/16” thick, minimum.

c. Round flanges: ID 18”, OD 21”, 18 evenly spaced slotted bolt holes, bolt-circle diameter of 19 ½”, and bolt hole slot dimension 5/16” x 1 ¼” flat oval. Hole pattern shall be oriented with an opening centered at the top (i.e. “12 o’clock”) position.

d. Rectangular flange drilled to match the mating silencer flange.

e. Continuously welded.

f. Inlet transition shall have a bolted access panel on each square to round transition:

i) Secured by stainless steel studs, so that threaded fasteners do not protrude into the duct interior.

ii) No Hinges.

iii) Single piece gasket over each opening, secured by adhesive.

iv) Access panels shall have identical bolt hole patterns and be interchangeable.

v) Interior of each access panel shall be built up so the inner surface is in approximately the same plane as the inner surface of the inlet transition when the panel is installed.

g. Opening size: big enough to contain a 7.5” diameter circle, minimum.

h. Debur and remove sharp edges on opening interior and access panel interior and exterior.

i. No coating is required.

3.3.3 Inlet and Outlet Screens:

a. Material: 11 Gauge or thicker stainless steel.

b. Construction: either cut plate, an intermediate crimp wire screen welded in a flange, or a lock crimp wire screen welded in a flange. The flanged screen shall be held in place by fasteners through the silencer flange holes.

c. The inside dimension of the screen flange shall match the mating flange at the mounting location.

d. Screen upstream of the inlet silencer shall have 1” x 1” square openings.

e. Screen downstream of the outlet silencer shall have 1 ½” x 1 ½” openings.

f. Debur and remove sharp edges by bead blasting or other means. Blast media shall be non-ferrous.

g. No coating is required.

h. Figure 3 in Reference (1) shows acceptable and unacceptable screen designs. Round screens are shown, the same requirements apply to rectangular screens.

3.3.4 Blower: Very heavy duty construction to resist damage from external abuse, airstream debris, and imbalance caused by operation in a dirty airstream. Direct drive, non-overloading, updraft centrifugal blower with aluminum double wall housing and aluminum impeller, a severe duty 125 Hp TEFC motor, and a stainless motor control enclosure containing a Solid State Reduced Voltage Combination Motor

Controller.

3.3.4.1 Motor:

a. 125 hp TEFC motor, Service Factor 1.15 or 1.25

b. Noise: To achieve the noise specification for the assembled blower, a silencer for the motor may be required. If a motor silencer is required, the vendor shall provide and install a silencer which meets the requirements of the specification section titled, Acoustic Treatment.

c. Motor cooling fan shall be unidirectional, if available from motor manufacturer.

d. Severe Duty per IEEE 841-2009, IEEE Standard for Petroleum and Chemical Industry—Premium-

Efficiency, Severe-Duty, Totally Enclosed Fan-Cooled (TEFC) Squirrel Cage Induction Motors—Up to and Including 370 kW (500 hp).

e. Bearings shall not be sealed – instead, grease fittings and spring loaded relief plugs shall be provided to allow relubrication.

f. Lubrication extension tubes shall be installed for the two grease fittings and two relief plugs, arranged to ensure accessibility without parts removal or disassembly. The arrangement shall protect the connections from damage when workers stand on top of the motor or motor enclosure.

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g. Extra label plate for installation on exterior of motor acoustic enclosure.

h. NEMA MG-1.

i. Motor mounting bolts shall be grade 8 with 1,000 hours of salt spray resistance per ASTM B117. The nuts shall be self-locking stainless steel.

3.3.4.2 Motor Controller:

a. Ambient environment for motor controller enclosure will be 20°F to 100°F.

b. Government circuit supplying the motor controller enclosure will be 460V, 3Ø, 60 Hz, 200A.

c. Short circuit rating 100 kA.

d. Padlockable disconnect.

e. Motor controller enclosure shall provide sufficient room for bottom cable entrance for both line and load. Allow for routing of Cable Type W, AWG 3-0, 4 conductor, within the enclosure for line connection, nominal cable diameter is 2.070in. Install a T&B 3308, cable connector 2-1/2in, or similar as a cable entrance at the bottom of the enclosure to prevent water/particulate intrusion.

f. The motor controller shall be a Schneider Electric p/n 8639-22T-Q-4X-4-B-A06-D07-U10-SPL, (or equal). “Enclosed Altistart 22 Solid State Reduced Voltage Combination Motor Controller with circuit breaker disconnect”, referred to in this specification as a “soft starter”.

g. Or equal criteria (the specified Schneider Electric part number meets these requirements):

1) Door mounted:

i. STOP and START push buttons.

ii. Red RUN light. Push to test.

iii. Green OFF light. Push to test.

iv. FAULT or TRIP pilot light/push button.

v. Mechanical hour meter. Meter shall not be resettable and shall display cumulative run hours even when the meter is not energized.

2) Stainless steel enclosure, Type 4X; 24” maximum width.

3) UL 508 starter.

4) Starter rating 150 Hp.

5) Automatic shorting contactor.

6) Protect motor against phase reversal, phase loss, improper line frequency, low line voltage.

h. The motor controller settings shall be adjusted and set correctly prior to delivery to the Government.

A password shall be required to adjust the soft starter settings. Recommended settings for the specified Altistart 22 are available by contacting the Technical Point of Contact for this specification.

i. A remote keypad, p/n VW3G22101 or equal, with ~3’ to 9’ connecting cable.

j. The enclosure shall not contain a thermostatically controlled heater.

3.3.4.3 Casing:

a. Direct drive, AMCA Arrangement #4, with clockwise upblast discharge.

b. Double-walled stainless steel aluminum housing with acoustic fill between the two walls. The housing shall be constructed as double wall by the fan manufacturer. Housing scroll thickness ¾” minimum; housing side sheet thickness 1/2” minimum.

c. A seal shall be installed where the motor shaft penetrates the drive side plate of the fan casing, for noise control.

d. Bolted fan casing inspection cover with flange and gasket.

e. Continuously-welded.

f. The housing alloy shall be appropriate for use in a marine environment without a coating.

g. Streamlined inlet thimble, 0.10” thick, minimum.

h. Stainless steel bolts and studs, Silicon Bronze nuts to avoid past galling problems.

i. Drain connection (1” diameter or larger) with brass or stainless steel ball valve at lowest point of housing.

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j. Reinforced sheet rubber shall be installed between the aluminum fan casing and the galvanized steel mounting base to prevent galvanic corrosion.

k. No coatings are required.

3.3.4.4 Rotor (a.k.a fan wheel):

a. Aluminum. The rotor alloy shall be appropriate for use in a marine environment without a coating.

b. Backward-curved or backward-inclined blades, non-overloading. Airfoil-type blades with a solid cross-section may also be used, if they are appropriate for the application. Hollow blades shall not be used.

c. Taper-lock bushing impeller mounting. Taper-lock bushing material shall be nickle-plated. No aluminum fasteners shall be used.

d. Rotor balance shall be by metal removal or welded-on weights and not by the addition of fasteners or mechanically-attached weights.

e. No coatings are required.

3.3.4.5 Other Characteristics:

a. Spark-resistant construction per AMCA Std 99-0401, type B, except as specified above.

b. Metal fan structure other than aluminum or stainless steel shall be galvanized or coated per paragraph

3.4.3.

c. The motor controller mounting bracket and other structure shall include openings to provide unobstructed access to the top and bottom of each motor mounting bolt.

d. Dynamic rotor balance and fan-motor unit vibration levels shall meet at least the requirements of

AMCA standard 204-96, Balance Quality and Vibration Levels for Fans, category BV-3. In addition, fan balance shall be tested after installation of the assembled fan, silencers, transitions, and all other components on the Mounting Base. If the peak velocity is not 0.25 inch/second or lower, the fan shall be rebalanced. Written certification of the vibration level and the balance achieved shall be delivered with the fan.

3.3.5 Mounting Base - For portability, all components shall be mounted on a heavy-duty weldment with the following features:

a. Structural supports under the inlet silencer and near the discharge of the outlet silencer, as shown in

Figure 4 in Reference (1).

b. Designed for operation on uneven surfaces without causing equipment damage, distortion or overstress.

c. Welded in accordance with ANSI/AWS D1.1.

d. Coating - Hot dip galvanized per paragraph 3.4.3.

e. Size and Arrangement - The mounting base shall have the minimum size possible while meeting lifting and handling requirements. Size: 103” x 80” (or smaller).

f. No blower component shall project past the four vertical planes defined by the 103” x 80” (or smaller) skid footprint, except the inlet silencer and transition and the outlet transition, as illustrated in Figure 4 in Reference (1).

g. Lifting and Handling - The mounting base shall include either one or more gross weight lifting pads, correctly spaced for even and level lifting by a single crane hook without spreader bar(s). The lifting pad(s) and attaching structure shall provide a 3 to 1 (minimum) safety factor based on material yield strength, or, 5 to 1 (minimum) based on ultimate strength, and calculated as though the actual weight were borne on no more than two pads.

i. The contractor shall subject each lifting attachment to a 200% load test for 2 minutes.

Acceptance criteria shall be: no bending, cracking, or permanent deformation of the lifting attachments or associated structure.

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h. The base shall include fully enclosed 4”x10” (mechanical tubing) forklift slots for handling with a forklift truck from either of three sides, as shown in Figure 4 in Reference (1). On those sides, the forklift slots shall be spaced 50 (+/- 1”) apart (on center) and shall extend far enough to prevent the forklift from contacting non-structural fan components except the outlet transitions, except, on one of the three sides, the discharge silencer and outlet transition are allowed to be in the way of the forklift.

Both sets of forklift slots shall have the same spacing between forklift tube centerlines. The center of gravity of the blower (with transitions installed) shall be centered between each pair of forklift tubes.

3.3.6 Acoustic Treatment - To achieve the specified sound pressure level, acoustic treatment shall be installed as needed.

a. The acoustic treatments and associated support system shall be heavy duty and constructed of either stainless steel, marine grade aluminum, or hot dip galvanized steel and non-metal acoustic materials as selected by the vendor.

i. The materials shall be designed for a 20 year service life in the weather in the specified high abuse, marine environment.

ii. Mineral wool shall not be used.

b. Motor controller operation, connection of line voltage to the motor controller, bearing lubrication, and connection of ducts to the air inlet and outlet shall be achieved without removing or modifying the acoustic treatment.

c. A means of observing motor rotation shall be provided.

d. The acoustic treatment covering the motor (if such treatment is installed) shall withstand a 250 lb person standing on it without damage. Acoustic treatment covering only the motor end bell is not subject to this restriction if labeled, “no step”.

e. The top of the motor acoustic enclosure shall include breaks or stiffeners.

f. The acoustic treatment covering the motor shall have a duplicate Motor Nameplate on the exterior of the treatment.

g. Raw cut edges of insulation pads shall be taped or coated.

h. If pins are used to secure insulation, each pin shall be trimmed and capped after the insulation is installed to prevent a personnel hazard.

3.4 Detailed Requirements

3.4.1 Fasteners - Flange fasteners, label plate fasteners, and other fasteners exposed to the weather shall be stainless steel, except nuts shall be Silicon Bronze to avoid past galling problems. Foundation fasteners shall utilize self-locking nuts. Motor mounting bolt material shall be as specified in the motor section of this specification. Self-drilling, self-tapping fasteners shall not be used.

3.4.2 Gaskets – All flanged joints shall include a gasket. Flange gaskets shall be cloth-inserted Neoprene or

Nylon-inserted Neoprene to prevent the gasket cracking failures experienced on past fans. Gaskets shall be secured in position by adhesive on one side.

3.4.3 Protective Coatings and Galvanizing - The following requirements apply to all system components and are in addition to the requirements stated in other sections of this specification:

a. Carbon steel components exposed to the weather shall be protected by hot dip galvanizing.

b. The exterior and interior of all enclosures and components shall have a protective coating unless they are fabricated of stainless steel, fiberglass, plastic, Alloy 5XXX or 6XXX aluminum, Silicon Bronze, or hot-dip galvanized steel. Hot-dip galvanized surfaces do not require any additional coating.

c. Weld spatter, burrs, and surface contaminants shall be removed prior to galvanizing or the application of protective coatings.

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d. Components shall be galvanized or coated (where specified) prior to final assembly.

e. Galvanizing shall be per ASTM A123-12, Standard Specification for Zinc (Hot-Dip Galvanized)

Coatings on Iron and Steel Products. Damaged galvanized coating shall be repaired per ASTM A

780, Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.

f. Lead base and chromium base paints are prohibited.

g. Where a protective coating is required, the surface shall be:

i. Cleaned to SSPC-SP1.

ii. Abrasive blasted to SSPC-SP10 for liquid or powder coatings.

iii. Primed with liquid or powder epoxy. Where the epoxy is applied to carbon steel, it shall be zinc-rich, such as Sherwin Williams Zinc Clad II Plus Primer liquid epoxy. Application thickness shall be as recommended in the product literature.

iv. Topcoated with either polyester powder coating, polyamide epoxy liquid coating, or aliphatic urethane liquid coating. Total topcoat thickness 4-6 mils DFT for powder coating and 6-8 mils for liquid coating. Coating manufacturer literature shall state that the topcoat is compatible with the primer.

3.4.4 Label Plates - Label plates shall be constructed of stainless steel with either black print produced by laser or engraved at least 0.5 mm deep and filled with automotive enamel. Engraving shall not be performed with a hand-held vibrating-type tool. Non-metal label plates are permitted for the manufacturers’ name and logo. Metal label plates can be combined. Label plates shall be attached by either stainless steel mechanical fasteners or by welding.

a. “Caution” or “Warning” label plates shall identify hazards and safety precautions to operators and maintenance personnel.

b. Label plates shall identify the equipment vendor, contract number, manufacturer, model, fan rated flow and pressure, and electrical service requirement.

c. Gauges and controls shall have label plates identifying their function.

d. Motor bearing lubricant shall be identified on a label plate.

e. An arrow showing correct motor rotation shall be shown on a label plate affixed to the fan housing, at the motor end.

f. Each lifting attachment shall be labeled with the working load limit (WLL) and the test date.

g. A label shall state and illustrate the skid weight, sling arrangement, minimum sling length, equipment dimensions, and center of gravity. The skid includes the inlet and outlet transitions.

h. A weather-proof copy of the electrical schematic shall be attached to the inside of the motor control enclosure. This label is not required to be metal. The schematic shall state:

i. The required set point of any adjustable control in the motor controller enclosure.

ii. The size and type of each fuse.

3.5 General Requirements

3.5.1 OSHA and NFPA Compliance The equipment specified herein shall be in compliance with the applicable OSHA and NEC/NFPA regulations. Portions of the system which are standard components, such as electrical components, shall be listed by one of the OSHA accredited NRTL's or approved in accordance with CFR Title 29, Chapter XVII, Part 1910. Approval shall be as specified under the

“Approval” and “Acceptance” criteria in the OSHA regulations Subpart “O”, Machinery and Machine

Guarding para. 1910.212 and Subpart “S” Electrical, para. 1910.303 and para. 1910.399.

3.5.1.1 The completed equipment shall either be Listed and labeled, as a whole, for the use described in the specification, or, prior to delivery, a field evaluation of the completed equipment shall be conducted by a

NRTL or a third party accredited Field Evaluation Body and determined to be safe for its intended use

11 June 2018 Page 9 of 11 and in conformance with applicable OSHA and NEC/NFPA requirements. The inspecting body shall affix a label certifying conformance with standards.

3.5.2 Energy Isolating Devices - Equipment provided by the contract shall provide energy isolating devices

(e.g. safety switches), to protect personnel from hazardous energy. The devices shall be designed and manufactured such that the device can be locked in the OFF position to prevent inadvertent or unauthorized change. The contractor shall ensure that all energy-isolating devices installed or modified are capable of being locked. This includes both mechanical and electrical devices.

3.5.3 Over-current Protection - All electrical components shall include overcurrent protective device(s) serving each phase conductor for AC circuits and both DC circuit conductors. Overloads, fuses, and circuit breakers shall be coordinated for maximum component protection and minimum circuit disruption per NFPA 70 & 79. The equipment will be powered by a circuit with an available fault current of 100kA.

3.5.4 Grounding - All exposed, non-current carrying metal parts on the equipment shall be maintained at common, zero ground potential. None of the primary circuits in the equipment shall be connected to ground. A grounding stud/lug on the equipment shall provide a means for grounding the equipment. The stud/lug shall not be constructed of aluminum due to past issues with galvanic corrosion.

3.5.5 Design - All materials and parts comprising the system shall be new, of current design and manufacture, and shall not have been in prior service except as required for factory testing. Products such as prototype unit, preproduction model, or experimental unit do not qualify as meeting this requirement. The equipment shall be complete, so that when connected to the utilities identified herein, it can be used for the function for which it is designed and constructed.

3.5.6 Personnel Safety and Health Requirements - Covers, platforms, guardrails, and safety devices shall be provided for all parts of the equipment that present a safety hazard. The safety devices shall not interfere with the operation or maintenance of the equipment. The safety devices shall be removable to facilitate inspection, maintenance, and repair of the equipment. All machine parts, components, mechanisms, and assemblies furnished on the unit shall comply with all specific requirements of “OSHA Safety and Health

Standard (29CFR1910), General Industry” that are applicable to the equipment itself. Additional safety and health requirements shall be as specified in other paragraphs of this specification.

3.5.7 Environmental Protection - The unit shall be designed and constructed so that during operation, service, transportation and storage conditions described herein, including final disposal, the equipment will comply with all applicable Environmental Protection Agency (EPA) and Occupational Safety and Health

Agency (OSHA) and State of Washington Department of Ecology (WDOE) restrictions for materials classified as hazardous to the environment in effect on the date of the contract. The equipment described herein shall not contain or emit material hazardous to the ecological system as prescribed by federal, state, and local statutes in effect at the point of installation.

3.5.8 Hazardous Material Exclusions - Supplies being used in the performance of this contract, or materials being provided as part of the equipment shall be free of known hazardous materials. Definitions of hazardous materials are specified in the latest version, including revisions adopted during the term of the contract, of Federal Standard No. 313.

3.5.8.1 Notwithstanding any other hazardous material usage permitted in this contract, radioactive materials or instruments capable of producing ionizing radiation as well as materials which contain asbestos, mercury, cadmium, lithium, methylene chloride, lead, or polychlorinated biphenyls (PCB’s) are prohibited.

3.5.9 Engineering Documents - Three hard copies of the following data shall be delivered within 30 days of the initial blower delivery. If more than one blower is ordered, only three total sets of data are required.

Each set shall include both a paper copy and a copy of the data on CD. Electronic copies shall include

11 June 2018 Page 10 of 11 electronic drawing files created for unit design (if CAD, AutoCad or Solid Edge 3D format preferred but not required).

a. Fan Curves (showing static pressure and horsepower curves plus blower sound pressure levels by octave band at 8500 and 14,000 CFM).

b. Silencer manufacturer drawings and aerodynamic and acoustic performance data for the silencers.

c. Acoustic performance data for components other than silencers (e.g. motor enclosure, etc).

d. Copy of Lifting Pad Certification

e. Operation instructions.

f. Detailed, illustrated impeller removal instructions.

g. Instructions, diagrams, and electrical/electronic schematics required to troubleshoot and repair the unit in the event of malfunction or breakdown.

h. Drawing and parts list for complete fan and all sub-components.

i. Copies of motor data sheet and vendor supplied labels inside the motor control enclosure.

j. Motor controller settings and password.

k. Copy of PCB Certification

l. Copy of Warranty

m. Testing Results and Certification (Paragraph 4).

3.5.9.1 Lifting Pad Certification - Concurrent with equipment delivery, the contractor shall supply a letter of certification stating the lifting pads meet the specified design criteria.

3.5.9.2 PCB Certification - Written certification from the manufacturer that the equipment contains no detectable PCBs (less than two (2) part-per-million (PPM)). The certification shall be on manufacturer’s letterhead, and signed by a company official who is empowered to provide it. A label plate containing the

PCB Certification information, shall be permanently affixed to the equipment in the vicinity of the manufacturer’s identification plate.

3.5.9.3 Warranty - Supplies and services furnished shall be covered by a one year warranty from defects in design, materials and workmanship. The warranty shall be the manufacturer’s standard commercial warranty that shall conform to all requirements of the contract. Acceptance of the manufacturer’s standard commercial warranty shall not minimize the rights of the government under clauses in the contract, and in any conflict that arises between the terms and conditions of the contract and manufacturer’s warranty, the terms and conditions of the contract shall take precedence. The warranty period shall commence from the date of acceptance as cited on a properly executed DD Form 250.

4 INSPECTION/TESTING

4.1 Initial Unit Inspection - The vendor shall notify C/270TS via the Contracting Officer when the first blower will be fully assembled and ready to be inspected for specification compliance no later than 10 business days (preferably sooner) prior to shipment of first unit. C/270TS shall schedule a site visit to the contractor’s facility in order to inspect chiller for specification compliance or waive visit.

4.2 Pre-delivery Testing - Prior to delivery, the blower shall be inspected by the contractor for design, construction, components, electrical equipment and workmanship to determine conformance with the requirements of this specification. The equipment delivered with the system shall also be inspected for mechanical and electrical integrity.

4.2.1 Each blower shall undergo the following tests:

Performance - Prior to shipment to the government, each fan shall be energized and operated for a total of 8 hours, continuous. Any problems shall be identified and corrected prior to shipment.

Load Testing - The contractor shall subject each lifting attachment to a 200% load test for 2 minutes.

Acceptance criteria shall be: no bending, cracking, or permanent deformation of the lifting attachments or associated structure.

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Acoustic Testing - During operation at 14,000 CFM, with silencers and the specified transitions installed, tested with 18” diameter, 0.1” or thinner aluminum inlet and outlet duct (with no acoustic or thermal treatment) connected, the sound pressure level of the fan assembly shall not exceed 72 dBA (reference pressure 20 micropascals, μPa) at 1 m from the major vertical surfaces of the machine at a height of 1.5 m above the floor or walk level. Sound pressure levels shall be measured at the vendor’s facility in accordance with ASME PTC 36-2004. Out of specification conditions shall be corrected prior to delivery.

4.2.2 Results and Certification - Report test data and results on separate data sheet for each unit tested

(include serial number, who performed the test, date, time, location, etc.). Include data sheets with

Engineering Documents Submittal (Paragraph 3.5.9).

4.3 Acceptance Testing at Destination - The equipment shall be supplied FOB Destination (Puget Sound

Naval Shipyard). Prior to acceptance, the equipment shall be inspected for shipping damage, verification of quantities, mechanical and electrical integrity, and the requirements of section 3. As part of this inspection, the equipment will be connected to the appropriate utilities and operated to determine conformance with the specification. The manufacturer at no cost to the government shall promptly correct discrepancies on any item of equipment supplied.

5 DELIVERY

5.1 Packaging and Marking - The equipment shall be packaged and marked for shipment in accordance with standard commercial practices. The air inlet and discharge flanges shall be blocked by metal, wood, or solid plastic flanged blanks to prevent air motion through the fan.

6 SUBMITTALS

6.1 Vendor bid/proposal shall include the fan manufacturer, model, and size and the silencer acoustic performance and pressure drop. Also the fan curve with power and performance, predicted blower octave band sound pressure levels with no silencer or ducts connected, and the impeller type for the proposed fan. In addition, the material and coatings for the fan casing, motor mount, mounting base, silencers, acoustic treatments/frame, and transitions.