SOW for B9001 FPI

STATEMENT OF WORK

For

FLUORESCENT PENETRANT INSPECTION (FPI) LINE

DESIGN AND FABRICATION

BUILDING 9001, COLUMN G-28

TINKER AFB, OK 73145

25 January 2012

Prepared by:

Thomas Canion

76 CMXG/QPX

405-582-4098 tom.canion@tinker.af.mil

Reviewed by:

Bo Lam

76 CMXG/QPB

405-582-4571 bo.lam@tinker.af.mil

I. BACKGROUND

76 CMXG is relocating its Local Manufacture support shops from building 3001 to building 9001, on Tinker Air Force Base.

II. PURPOSE

New Fluorescent Penetrant Inspection (FPI) line will be installed in building 9001 to support the local manufacture workload.

III. BASIC PERFORMANCE PERIOD

The contractor shall complete all work in conjunction with this Statement Of Work and ship the products to Tinker Air Force Base within three (3) months after contract award.

IV. REQUIREMENT

1. Contractor shall design, fabricate a complete Fluorescent Penetrant Inspection (FPI) line, and associated equipment as described in this Statement Of Work and in attached drawing 12B0002.

2. The FPI line shall comply with SAE AMS2644, ASTM E1-98, ASTM E1417, NFPA70, MIL-PRF-20696F, ASTM E1444, T.O. 33B-1-1, AFOSH Std 91-110 and all applicable local, state and federal regulations.

3. Within 30 days after the contract is awarded, contractor shall submit detailed design with all required utilities included in drawings to the government for reviews and approval.

4. Contractor shall deliver As Built NDI Line Documentation and Drawings.

A. FLUORESCENT PENETRANT INSPECTION (FPI) UNIT

1. SCOPE. Contractor shall design, and fabricate a FPI unit to perform fluorescent penetrant inspection using the post-emulsification penetrant method.

2. CLASSIFICATION.

2.1. Type. Separate modular stations.

2.2. Size.

Straight Section: 48”long x 36” wide Straight Section: 40”long x 36” wide Straight Section: 120”long x 36” wide Straight Section: 72”long x 36” wide 90o turn: 48” wide x 48” radius

Table 1

3. SALIENT CHARACTERISTICS.

3.1. First Article Testing. Not Required

3.2. Design and Construction. The unit shall be designed and constructed to facilitate efficient inspection of parts and assemblies capable of being penetrant inspected. It shall be constructed to hold aircraft parts and inspection materials without deformation of the components. The unit shall be designed and constructed so that during the normal inspection process there will be no leakage of penetrant, remover, developer, and/or water within the area bounded by the outermost extremities of the inspection unit; nor shall it leak from station to station, except for drain stations back to its respective reservoir.

3.3. Tolerances. All tolerances for dimensional specifications are ± 0.5 inch unless otherwise noted.

3.4. Stations. This unit shall consist of the stations as shown in Table 1 and the FPI line layout in the attached drawing 12B0002.

3.4.1.1 Load/ Dwell/Drain/Unload Stations (Stations 1 & 4 & 5 & 8 & 10 & 12 & 14 & 15 & 18 & 20)

The stations shall consist of a frame, drain pan, and a full roller top grille. Required dimensions of the stations are shown in Table 1 and drawing 12B0002. The stations shall be structurally self-supported from below with a minimum rate of 500 pound load. Design shall be such to insure that the dripped liquids are contained in the drip pans and completely directed to the lowest point of the drip pans which connect to a ½” drain ball valve. The drain pan shall be constructed using16 gauge stainless steel pan over painted mild steel frame to prevent fluids from running off inspected materials and dripping on the floor. The overall dimensions (width and height) of the roller top grille shall conform to the width and the height of adjacent processing stations. The roller grille shall be constructed with 2" diameter rollers at 4" centers with non-corrodible roller bearings, the roller top grille shall be made in sections of 24” or less to facilitate easy removal for cleaning of the drip pan.

3.4.1.2. Penetrant Stations (Stations 2 & 3).

The Penetrant station shall consist of a frame, tank, cover, a pneumatically operated lowerator, an air-driven pump with flow-on nozzle, a transfer drum pump, and a Hose Bibb. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The tank shall be constructed of 16 gauge stainless steel, mounted in a painted 2” mild steel tubular frame. A bi-fold stainless steel cover shall be attached to the top of tank. A drain connection and cutoff valve shall be provided at the bottom rear of the tanks using standard pipe size 1 ¼”.

b). The Penetrant Station shall be equipped with a pneumatically operated lowerator with regulator and valve attached and rated for a 500 pound load. The lowerator is fitted with a full roller grille of 2" diameter stainless steel rollers at 4” centers with non-corrodible bearings. The lowerator shall have manual controls at the operator position to lower the parts into the bottom of the tank then raise them to the working level to be off loaded. The travel speed of the lowerator shall be at minimum to prevent fluid splashing while it is in up or down position.

c). The Penetrant Station shall be equipped with an air-driven pump with regulators for intake air and fluid line, with flow-on swivel-nozzle & eight foot hose attached to the inside-top-right of the tank. The flow rate for the nozzle shall be adjustable from 1 gallon per minute to 3 gallons per minute. The pump intake and return connections shall be on the bottom of the tank and include cut-off valves with plugs or caps to seal the connection in the event of pump failure. The lowerator shall rest directly to the bottom of the tank, and have lateral openings or holes for movement of the penetrant to the pump intake. The air driven pump shall have adjustable flow control within convenient reach of the operator. In no case, shall the air driven pump or nozzle cause atomization of the penetrant.

d). The drain connection at the rear bottom of the tank shall be branched off into 2 directions with gate valves to allow one drain at a time. Provide an air-driven penetrant drum transfer pump to be connected with one of drain line for penetrant transfer. Intake and outlet hoses for transfer pump shall be long enough when the 55 gallons drum is placed in front of the penetrant station. The other drain line will be used for clean up after emptying the penetrant.

e). Provide a ¾” Hose Bibb attached to the side of the tank for clean up uses.

3.4.1.3. Pre-Wash Station (Station 6).

The Pre-Wash station shall consist of a frame, tank, backsplash, a pneumatically operated lowerator, a hand hose with swivel nozzle, and a Hose Bibb. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The tank shall be constructed of 16 gauge stainless steel, mounted in a painted 2” mild steel tubular frame. A drain connection and cutoff valve shall be provided at the bottom rear of the tank using standard pipe size 1 ¼”.

b). The backsplash shall be provided to prevent overspray from the rinse station from reaching the rear of the unit. The backsplash shall be fabricated from 16 gauge stainless steel extending up to 84” high.

c). The Pre-Wash Station shall be equipped with a pneumatically operated lowerator with regulator and valve attached and rated for a 500 pound load. The lowerator is fitted with a full roller grille of 2" diameter stainless steel rollers at 4” centers with non-corrodible bearings. The lowerator shall have manual controls at the operator position to lower the parts into the bottom of the tank then raise them to the working level to be off loaded. The travel speed of the lowerator shall be at minimum to prevent fluid splashing while it is in up or down position.

d). The station shall be plumbed to provide both hot and cold water to the hand hose. Separate controls for water temperature, pressure regulation, and flow regulation shall be provided and shall be located on the front of the station. Gauges to measure water temperature and pressure shall be located on or at the front of the station. However, it is highly desirable to minimize protrusions from controls and gauges from the front of the stations. The station is equipped with a hand hose and swivel nozzle. The nozzle shall be fan-shaped coarse spray with a flow rate of 3 gallons per minute at water pressure 30 pound per square inch. The hose is 6’ long and connected at the inside top right of the tank.

e). Provide a ¾” Hose Bibb attached to the side of the tank for clean up uses.

3.4.1.4. Emulsifier Station (Station 7).

The Emulsifier station shall consist of a frame, tank, cover, pneumatically operated lowerator, an air agitation system, a transfer pump, and a Hose Bibb. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The tank shall be constructed of 16 gauge stainless steel, mounted in a painted 2” mild steel tubular frame. A bi-fold stainless steel cover shall be attached to the top of tank. A drain connection and cutoff valve shall be provided at the bottom rear of the tank using standard pipe size 1 ¼”.

b). The Emulsifier Station shall be equipped with a pneumatically operated lowerator with regulator and valve attached and rated for a 500 pound load. The lowerator is fitted with a full roller grille of 2" diameter stainless steel rollers at 4” centers with non-corrodible bearings. The lowerator shall have manual controls at the operator position to lower the parts into the bottom of the tank then raise them to the working level to be off loaded. The travel speed of the lowerator shall be at minimum to prevent fluid splashing while it is in up or down position.

c). The agitation system shall include an air distribution manifold, manifold shutoff valve, air pressure regulator, and an air pressure gauge. All controls and gauges (i.e. manifold shutoff valve, air pressure regulator and pressure gauge) shall be readable from the front of the station. However, it is highly desirable to minimize protrusions from controls and gauges from the front of the station. The agitation shall allow thorough agitation of the emulsifier solution throughout the tank, and shall not cause the solution to foam.

d). The drain connection at the bottom of the tank shall be branched off into 2 directions with gate valves to allow one drain at a time. Provide an air-driven emulsifier drum transfer pump to be connected with one of drain line for emulsifier transfer. Intake and outlet hoses for transfer pump shall be long enough when the 55 gallons drum is placed in front of the emulsifier station. The other drain line will be used for clean up after emptying the emulsifier solutions.

e). Provide a ¾” Hose Bibb attached to the side of the tank for clean up uses.

3.4.1.5. Post-Wash Station (Station 9)

The Post-Wash station shall consist of a frame, tank, backsplash, a pneumatically operated lowerator, a hand hose with swivel nozzle, emulsifier injection system, canopy, handheld black light, and a Hose Bibb. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The tank shall be constructed of 16 gauge stainless steel, mounted in a painted 2” mild steel tubular frame. A drain connection and cutoff valve shall be provided at the bottom rear of the tank using standard pipe size 1 ¼”.

b). The backsplash shall be provided to prevent overspray from the rinse station from reaching the rear of the unit. The backsplash shall be fabricated from 16 gauge stainless steel extending up to 84” high.

c). The Post-Wash Station shall be equipped with a pneumatically operated lowerator with regulator and valve attached and rated for a 500 pound load. The lowerator is fitted with a full roller grille of 2" diameter stainless steel rollers at 4” centers with non-corrodible bearings. The lowerator shall have manual controls at the operator position to lower the parts into the bottom of the tank then raise them to the working level to be off loaded. The travel speed of the lowerator shall be at minimum to prevent fluid splashing while it is in up or down position.

d). The station shall be plumbed to provide both hot and cold water to the hand hose. Separate controls for water temperature, pressure regulation, and flow regulation shall be provided and shall be located on the front of the station. Gauges to measure water temperature and pressure shall be located on or at the front of the station. However, it is highly desirable to minimize protrusions from controls and gauges from the front of the station. The station is equipped with a hand hose and swivel nozzle. The nozzle shall be fan-shaped coarse spray with a flow rate of 3 gallons per minute at water pressure 30 pound per square inch. The hose is 6 feet long and connected at the inside top right of the tank.

e). Provide an adjustable emulsifier injection system , model Dosatron DI-150, or equivalent, attached to the back of the station, for solution concentrations from 0% to 5%. The system shall be equipped with 8 feet intake hose and adaptor for 55 gallon drum connection, the outlet hose is 6’ long and connected at the inside top right of the tank with fan-shaped coarse spray swivel nozzle with a flow rate of 3 gallons per minute.

f). The Post-Wash station requires a full canopy with side curtains, split to allow ingress and egress through the station. The canopy has no front support frame to obstruct the operator or movement of parts through the station. The curtain material shall be weather resistant, waterproof cloth meeting the intent of MIL-PRF-20696, Type II, Class 2. The curtain material shall be attached to the canopy with snaps, or hook & pile fasteners, for easy removal and replacement. The top of the canopy is equipped with 2 each 24 inch long, 2-tube, 40-walt overhead fluorescent fixtures, and an exhaust fan with capacity of 900 cubic feet per minute. The canopy shall not allow more than 20 lux of light from the outside.

g). The station is equipped with a hand held black light with minimum intensity of 2000 microwatts per square centimeter measured at 15 inches from the lens, the black light shall be mounted to the rear wall with an adjustable fixture.

h). Provide a ¾” Hose Bibb attached to the side of the tank for clean up uses.

i). Provide a 120V/15Amp GFC duplex receptacle for handheld black light.

3.4.1.6. Developer Station (Station 11)

The Developer Station shall consist of a frame, tank, cover, pneumatically operated lowerator, an agitation pump, a transfer pump, and a Hose Bibb. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The tank shall be constructed of 16 gauge stainless steel, mounted in a painted 2” mild steel tubular frame. A bi-fold stainless steel cover shall be attached to the top of tank. A drain connection and cutoff valve shall be provided at the bottom rear of the tank using standard pipe size 1 ¼”.

b). The Developer Station shall be equipped with a pneumatically operated lowerator with regulator and valve attached and rated for a 500 pound load. The lowerator is fitted with a full roller grille of 2" diameter stainless steel rollers at 4” centers with non-corrodible bearings. The lowerator shall have manual controls at the operator position to lower the parts into the bottom of the tank then raise them to the working level to be off loaded. The travel speed of the lowerator shall be at minimum to prevent fluid splashing while it is in up or down position.

c). The station shall be equipped with an air-driven agitation pump and an application spray gun connected at the inside top right of the tank with 8’ hose. All controls shall be located in front of station. Spray gun shall provide a fine mist of developer solutions with pressure at 30 psi.

d). The drain connection at the bottom of the tank shall be branched off into 2 directions with gate valves to allow one drain at a time. Provide an air-driven developer drum transfer pump to be connected with one of drain line for developer solutions transfer. Intake and outlet hoses for transfer pump shall be long enough when the 55 gallons drum is placed in front of the developer station. The other drain line will be used for clean up after emptying the developer solutions.

e). Provide a ¾” Hose Bibb attached to the side of the tank for clean up uses.

3.4.1.7. Dryer Stations (Stations 13 & 19).

The Dryer Station shall consist of an enclosure with openings at each end, a full roller grille, a removable drip pan, curtains, electric heated ventilation system, and a digital thermostat. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). Enclosure shall be constructed with 16 gauge mild steel sheets, double-walled glass insulation, with openings at each end for parts processing. The enclosure shall be sufficiently insulated to provide no more than 100F from ambient temperature (measured at the dryer outside walls) when the Dryer is operated at maximum heating capacity.

b). The station shall be equipped with a full roller grille and drip pan. Roller grille and drip pan shall be constructed as described in paragraph 3.4.1.1 except the drip pan shall be removable for cleaning.

c). Curtains shall be provided for each end. The curtain material shall be attached to the dryer ends with snaps, or hook & pile fasteners, for easy removal and replacement. The curtain material shall be weather resistant, waterproof cloth meeting the intent of MIL-PRF-20696, Type II, Class 2. However, an insulating or reflective coating on the inside of the curtains to conserve energy is highly desirable.

d). The Dryer shall be designed with electric heated ventilation system that provides and maintain a temperature of 1600F within 10 minutes after the system is turned on. Recirculation fan(s) shall be designed to minimize leakage to the openings at each end. Dryer heater element(s) shall be capable of operating from both 208 and 240 VAC, 60 Hertz.

e). Thermostat. The thermometer-thermostat shall be scaled from 1000F to 2000F, in increments of 50F. The thermostat shall control the dryer temperature to plus or minus 50F of this setting. The thermostat will be protected against accidental adjustment.

3.4.1.8 Inspection Station (Station 16).

The inspection station shall be provided with a full roller grille with drip pan, 2 each exhaust fans, two mercury-vapor inspection black lights, 2 each overhead fluorescent fixtures, an overhead white light, a shelf, and a canopy. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The Inspection station requires a full canopy with side curtains, split to allow ingress and egress through the station. The canopy has no front support frame to obstruct the operator or movement of parts through the station. The curtain material shall be weather resistant, waterproof cloth meeting the intent of MIL-PRF-20696, Type II, Class 2. The curtain material shall be attached to the canopy with snaps, or hook & pile fasteners, for easy removal and replacement. The top of the canopy shall be equipped with 2 each 48 inch long, 2-tube, 40-watt overhead fluorescent fixtures, a 2-tube, 48 inch long,100 watts, white light fixture, and 2 each exhaust fans with capacity of 900 cubic feet per minute. All electrical lines for lights and fans are dedicated circuits and the controls of these lines shall be put in one control box and mount in front of station. The canopy shall not allow more than 20 lux of light from the outside.

b).The station shall be equipped with a full roller grille and drip pan. Roller grille and drip pan shall be constructed as described in paragraph 3.4.1.1 except the drip pan shall be removable for cleaning.

c). The station is equipped with 2 each hand held black lights with minimum intensity of 2000 microwatts per square centimeter measured at 15 inches from the lens, the black lights shall be mounted to the side with an adjustable fixtures. Provide a 120V/15Amp GFC duplex receptacle for each handheld black light.

d). Provide a 12”X 24” shelf located 18” above the roller grille for holding inspection materials.

3.4.1.9. Post-Insp Wash Station (Station 17).

The Post-InspWash station shall consist of a frame, tank, backsplash, a pneumatically operated lowerator, a hand hose with swivel nozzle, and a Hose Bibb. Overall required dimensions are shown in Table 1 and drawing 12B0002.

a). The tank shall be constructed of 16 gauge stainless steel, mounted in a painted 2” mild steel tubular frame. A drain connection and cutoff valve shall be provided at the bottom rear of the tank using standard pipe size 1 ¼”.

b). The backsplash shall be provided to prevent overspray from the rinse station from reaching the rear of the unit. The backsplash shall be fabricated from 16 gauge stainless steel extending up to 84” high.

c). The Post-InspWash Station shall be equipped with a pneumatically operated lowerator with regulator and valve attached and rated for a 500 pound load. The lowerator is fitted with a full roller grille of 2" diameter stainless steel rollers at 4” centers with non-corrodible bearings. The lowerator shall have manual controls at the operator position to lower the parts into the bottom of the tank then raise them to the working level to be off loaded. The travel speed of the lowerator shall be at minimum to prevent fluid splashing while it is in up or down position.

d). The station shall be plumbed to provide both hot and cold water to the hand hose. Separate controls for water temperature, pressure regulation, and flow regulation shall be provided and shall be located on the front of the station. Gauges to measure water temperature and pressure shall be located on or at the front of the station. However, it is highly desirable to minimize protrusions from controls and gauges from the front of the stations. The station is equipped with a hand hose and swivel nozzle. The nozzle shall be fan-shaped coarse spray with a flow rate of 3 gallons per minute at water pressure 30 pound per square inch. The hose is 6’ long and connected at the inside top right of the tank.

e). Provide a ¾” Hose Bibb attached to the side of the tank for clean up uses.

3.5. Voltage. All wiring, insulation, and electrical components shall be in compliance with the National Electric Code, NFPA 70. Dryer heater element(s) shall be capable of operating from both 208 and 240 VAC, 60 Hertz. The heater elements shall be the only components to operate directly from line voltage above 120 VAC. The initial line operating voltage shall be 240 VAC unless otherwise specified by the procuring activity. The rest of the equipment shall operate from 110-120V, 60 Hertz, single phase AC source and shall be Ground Fault Circuit Interrupter (GFC1) protected. The unit shall require a single connection to each source (one 120V and one 208V, 240V, or 480V source).

3.6. Controls. Each black light, white light, exhaust fan, and dryer heater circuit shall operate independently of any other unit and shall have a separate control or switch. Each line control or heater or dryer control shall be equipped with an indicator light at a single location at/near the dryer. However, it is desirable to deactivate the entire unit with a single switch.

4. REGULATORY REQUIREMENTS. The contractor is encouraged to use recovered materials in accordance with Federal Acquisition Regulation (FAR) 23.403 to the maximum extent practical.

4.1. Metric Products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, providing they fall within specified tolerances using conversion tables contained in the latest revision of Federal Standard No. 376,. and all other requirements of this Statement of Work are met. If a product is manufactured to metric dimension and those dimensions exceed tolerances specified in the inch-pound units, a request should be made to the contracting officer and 76 CMXG/QPB to determine if the product is acceptable.

5. QUALITY ASSURANCE PROVISIONS.

5.1. Contractor Certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this Statement of Work, and that the product conforms to the producer's own drawings, standards, and quality assurance practices. The government reserves the right to require a government witnessed, pre-award, sample verification test at the contractor's site to insure conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract.

5.2. First Article Inspection.

5.2.1. Acceptance Tests. Acceptance tests are intended to verify that production units are similar to the applicable specifications. The following are the minimum inspection requirements for production acceptance: paragraph 5.3.1 and paragraph 5.3.2

5.3. Test Methods. The following test shall be conducted in an ambient temperature range of 68-95 degrees Fahrenheit, and in the order given.

5.3.1. Examination of Product. The inspection units selected for inspection shall be inspected during manufacture and upon completion to determine compliance with the requirements of the contract and this specification with respect to material, workmanship, and dimensions.

5.3.2. Tanks. All tanks, drain pans, associated lines, outlet valves, etc., shall be penetrant inspected with materials listed on SAE AMS 2644. Each tank and drain pan shall have one of the penetrants of Type I, Method D, Sensitivity Level 2 applied to the interior seams, bends, welds, and connections. The penetrant shall dwell for at least 30 minutes. The developer, Form A, C, or D shall be applied to the exterior of these seams, bends, welds, and connections. All exterior seams, bends, welds, and connections shall be inspected under blacklight for indication of penetrant leakage. This inspection shall be accomplished under low light (ambient light < 20 lux) conditions with a blacklight conforming to the characteristics of paragraph 3.10. Any leakage shall be cause for rejection.

5.3.2.1. Drain pans. The drain pan outlet shall be plugged and the pan filled with water. The outlet will be unplugged and allowed to drain into its associated inspection tank. Incomplete drainage shall be cause for rejection.

5.3.3. Dryer Stations.

5.3.3.1. Temperature rise. The temperature shall be checked in five locations (four corners and center) within the dryer cabinet using an ASTM El type thermometer or equivalent.

5.3.3.1.1. Normal Conditions. The thermostat controlling the temperature within the dryer cabinet shall be set at 1400F. The interior of the dryer cabinet shall reach a temperature of 135-145°F from an ambient room temperature of between 65-750F in a maximum of 10 minutes. The dryer temperature not rising a minimum of 70°F within 10 minutes shall be cause for rejection.

5.3.3.1.2. Extreme Conditions. After the dryer has returned to an ambient temperature between 65-750F, the thermostat controlling the temperature within the dryer cabinet shall be set at 110°F above the ambient temperature. The interior of the dryer shall reach the set temperature within a maximum of 60 minutes. The dryer temperature not rising 1100F within 60 minutes shall be cause for rejection.

(Note: This test is used to ensure the dryer will bring parts from a minimum penetrant dwell temperature of 400F to a maximum dryer temperature of 1600F within the extended dwell time.)

5.3.3.2. Thermostats. After the test for temperature rise has been completed, the thermostat shall be set at 140°F and the dryer cabinet shall reach and be stabilized at this temperature for 30 minutes. The thermometer specified in 5.3.3.1. shall then be used to check the temperature at the thermostat element, at each end with 2 inches of the curtains, and at the center of the upper shelf four inches from the near edge (a total of four readings). The thermometer shall remain at each location for ten minutes prior to reading the temperature. The average of the four readings shall be within 135°F to 1450F. An average temperature outside of the range 1350F to 145°F shall be cause for rejection.

5.3.3.3. Temperature recovery. The test for temperature recovery shall be conducted while the temperature of the dryer cabinet is still stabilized. The curtains of the cabinet shall be opened to maximum for one minute and then closed for eight minutes. The temperature shall be measured at the locations stated in 5.3.3.2. An average temperature outside the range 135°F to 145°F shall be cause for rejection.

5.3.4. Liquid Environment Test. With electrical power disconnected, a coarse water spray shall be directed to all electrical components including switches and wiring enclosure, located on the drain, penetrant, remover, rinse, developer, and dryer stations from all possible angles of attack for a minimum of 30 minutes. Afterward, all possible electrical components shall be opened to be inspected for accumulation of water. The government inspector shall designate the locations to be inspected for water accumulation. Any accumulation of water in an electrical enclosure is cause for rejection. Power shall be reapplied, and all electrical equipment shall be operated during this test. Failure of any equipment to operate satisfactorily, including switches and wiring, shall be cause for rejection.

5.3.5. Delivery rate of liquid flow nozzles. The delivery rate of the liquid in the pre-rinse and remover rinse stations shall be determined by measuring the amount of water passing through the nozzle for a period of one minute. The nozzles shall be opened to maximum. The delivery rate of the liquid in the rinse stations shall be determined by measuring the amount of water at 30 PSI passing through the spray nozzle in one minute. A coarse spray type with a flow rate of less than 3 gallons per minute, or greater than 6 gallons per minute, shall be cause for rejection.

5.3.6. Roller Top Grilles

5.3.6.1. Load Test. Each roller top grille shall be load tested with the grille assembly supported in its usual manner. Place a load of at least 500 pounds at one end of the grille uniformly distributed over four rollers (two axles). All rollers shall roll freely under this load traveling at a rate not to exceed six inches per second. Evidence of failure or damage to the grille assembly or rollers not rolling freely under load shall be cause for rejection.

5.3.6.2. Roll Test. The following roll test shall be performed after the load test and on each roller top grille. The grille shall be supported so that the top line of the rollers is at an angle not to exceed seven degrees with respect to the horizontal. A 50 pound load, uniformly distributed over four rollers (two axles) on the raised end of the grille, should move freely and smoothly to the lower end with an initial external force to start it. Failure of the load to move freely and smoothly to the lower end shall be cause for rejection.

5.3.7. Black light test. The test for light intensity shall be measured with an ultraviolet intensity meter and shall measure at least 2000 microwatts per square centimeter at a distance of 15 inches from the light with peak frequency at 365 nanometers. Initial intensities less than 2000 microwatts per square centimeter shall be cause for rejection.

6. PRESERVATION, PACKAGING, PACKING, LABELING, AND MARKING. Preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order. Drain valves shall be left open.

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