1、 FSC 6635 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data that may improve this document should be sent to FSC: 6635 - 642 CBSG/GBEA, 460 Richard Ray Blvd, Suite 200, Robins AFB, GA 31098-1813. Since contact information can change, you may want to
2、verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil/online/. A-A-59870 02 July 2010 COMMERCIAL ITEM DESCRIPTION HELIUM LEAK DETECTOR The General Services Administration has authorized the use of this commercial item description (CID), for al
3、l federal agencies. 1. Scope. This CID describes a portable helium leak detector, which will be used to determine the location of leaks in fuel tanks as well as other aircraft systems. By filling a fuel tank or container with helium (the helium acts as a tracer), the helium leak detector will enable
4、 aircraft maintainers to locate the origination point(s) of the leak(s) as the helium escapes into the atmosphere. 2. SALIENT CHARACTERISTICS. 2.1 Helium leak detector description. The helium leak detector shall be supplied with a helium leak detector, a standard probe, a heavy duty sampling pump an
5、d electronics interface for the safety probe and fast scan probe. The leak detector shall be portable. 2.2 Design and construction. The helium leak detector shall be designed and constructed so that no parts will work loose in service. They shall be built to withstand the strains, jars, vibrations,
6、and other conditions incident to shipping, storage, installation, and service. They shall be weatherproof and designed to prevent the intrusion of water and sand into critical operating components. 2.2.1 Materials, protective coatings, and finish. 2.2.1.1 Dissimilar metals. Dissimilar metals, as def
7、ined in MIL-STD-889, shall not be in contact with each other. Metal plating or metal spraying of dissimilar base metals to provide electromotively compatible abutting surfaces is acceptable. The use of dissimilar metals only when separated by suitable insulating material is permitted, except in syst
8、ems where bridging of insulation materials by an electrically conductive fluid can occur. Sealants or gel type gasket materials shall be used between faying surfaces and butt joints. 2.2.1.2 Ventilation. Ventilation shall be sufficient to prevent moisture retention and buildup. INCH-POUND Provided b
9、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59870 2 2.2.2 Markings. All external devices which require an operational or maintenance interface shall be marked in accordance with MIL-STD-130. Painted markings shall be 1-inch high block letters unless pr
10、ohibited by the available space. In such cases, the markings shall be the largest size possible, but shall not be less than -inch high. Markings, Information/Caution shall be Lusterless Black, Color Number 37038 of FED-STD-595, and Markings, Warning/Danger shall be Lusterless Red, Color Number 31136
11、 of FED-STD-595. Part identification marking is required per MIL-STD-130. Unique identification (UID) is invoked. 2.2.3 Identification and information plates. 2.2.3.1 Identification plate. An identification plate in accordance with MIL-STD-130 shall be securely attached to the helium leak detector i
12、n a readily accessible location. The identification plate shall contain the following information: nomenclature, part number, serial number, date of manufacture, manufacturers name, Commercial and Government Entity (CAGE) code, date of warranty expiration, and National Stock Number (NSN). The helium
13、 leak detector and any components meeting Unique Identification (UID) criteria shall have UID information in accordance with MIL-STD-130 permanently affixed near the respective identification plate(s). UID information shall be included as both a bar code and human readable markings. 2.2.4 Safety. 2.
14、2.4.1 System safety. The design of the helium leak detector shall not contain any system safety mishap risk categories greater than low as defined in Table A-IV of MIL-STD-882. 2.2.4.2 Component protection. All space in which work is performed during operation, service, and maintenance shall be free
15、 of hazardous protrusions, sharp edges, or other features which may cause injury to personnel. All rotating and reciprocating parts and all parts subject to high operational temperatures or subject to being electrically energized, that are of such nature or so located as to be hazardous to personnel
16、, shall be guarded or insulated to eliminate the hazard. 2.2.4.3 Foreign object damage (FOD). All loose metal parts, such as pins or connector covers, shall be securely attached to the helium leak detector with wire ropes or chains. “Dog tag“ style beaded chains shall not be provided. Removable pane
17、ls, if provided, shall be attached with captive fasteners. Tire valve stem caps shall be made of plastic. 2.2.4.4 Electromagnetic interference (EMI). The helium leak detector shall be in accordance with the following radiated emission and susceptibility requirements of MIL-STD-461: RE102 and RS103.
18、2.2.4.5 Electrostatic discharge. The design of the helium leak detector shall preclude equipment damage due to electrostatic discharge (ESD), protect personnel from electrical shock due to static charging, and prevent ignition of explosive atmospheres due to sparking. Provided by IHSNot for ResaleNo
19、 reproduction or networking permitted without license from IHS-,-,-A-A-59870 3 2.2.5 Human factors. The helium leak detector shall be designed in accordance with MIL-STD-1472 for ease of operation, inspection, and maintenance, including the use of arctic mittens and Mission-Oriented Protective Postu
20、re (MOPP) Level 4 Chemical Warfare Gear. 2.2.6 Fastening devices. All screws, bolts, nuts, pins, and other fastening devices shall be properly designed, manufactured, and installed with adequate means of preventing loss of torque or adjustment. Cotter pins, lock washers, or nylon patches shall not b
21、e used for this purpose, except for the attachment of trim items or as provided in commercial components. Tapped aluminum threads shall have a minimum thread engagement of at least two times the nominal fastener diameter. 2.2.7 Welders and welding. Welding procedures shall be in accordance with a na
22、tionally recognized welding code. The surface parts to be welded shall be free from rust, scale, paint, grease, and other foreign matter. Welds shall be of sufficient size and shape to develop the full strength of the welded parts. Welds shall transmit stress without cracking or permanent distortion
23、 when the parts connected by the welds are subjected to test, proof, and service loadings. 2.2.8 Foolproofness. Where improper installation of an item causes a malfunction, an asymmetric mounting system shall be provided, where practical, to ensure proper mounting of the item. 2.3 Environmental cond
24、itions. 2.3.1 Operating temperature range. The helium leak detector shall be capable of operating in ambient temperatures ranging from -68 F to 104 F. 2.4 Transportability. 2.4.1 Surface transportability. The helium leak detector shall be transportable via all modes of surface shipment: rail, sea, r
25、oad, etc., and shall be capable of withstanding mechanical shock and vibration characteristics of rail, sea, and road transport. 2.5 Performance. 2.5.1 Concentration. The minimum helium detectable concentration required shall be two parts per million. 2.5.2 Detectable leak rate. The minimum detectab
26、le leak rate required shall be 5x106 millibar liters per second. 2.5.3 Response time. The leak detector shall have a response time of less than two seconds. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59870 4 2.6 Probes. 2.6.1 Standard probe.
27、 The detector shall be supplied with a standard probe that is supplied with the detector. 2.6.2 Standard probe hose length. The standard probe hose length shall be at least three feet. 2.6.3 Safety probe. A safety testing probe shall be supplied that has been certified intrinsically safe to National
28、 Fire Protection Association 70 Class 1 Division 1 hazardous areas requirements. 2.6.4 Certificate of conformance. The safety testing probe shall be supplied with a copy of the Class 1 Division 1 certificate of conformance. 2.6.5 Safety probe hose length. The safety probe hose length shall be at lea
29、st 30 feet. 2.6.6 Non-safety probe. The detector shall be supplied with a non-safety telescoping detector probe for leak detection in non-fuel source related applications. 2.6.7 Non-safety probe hose length. The length of the non-safety probe shall be capable of telescoping at least 10 feet. 2.6.8 P
30、in probe. The pin probe shall be supplied with a pin probe kit, which includes three attachments to allow detection in restricted access areas. 2.6.9 Straight metallic probe. The length of the straight metallic probe shall be six inches. 2.6.10 Flexible plastic probe. The length of the flexible plas
31、tic probe shall be six inches. 2.6.11 Oil can gooseneck probe. The length of the oil can gooseneck probe shall be six inches. 2.6.12 Electronic probe interface. The helium leak detector shall be supplied with an electronic probe interface, which allows the connection of the safety probe, and the fas
32、t scan probe to the detector unit. 2.7 Heavy duty sampling pump. The heavy duty sampling pump is an air pump that draws the air being sampled into the detector in order for the detector to “sniff” the sampled air for helium. 2.8 Helium manifold network. The helium manifold network is designed to all
33、ow regulated low pressure helium less than five per square inch (PSI) to be applied to the aircraft. 2.8.1 Digital pressure gauges. Two digital pressure gauges that are battery powered and have an operating range of 0 to 240 PSI. Provided by IHSNot for ResaleNo reproduction or networking permitted w
34、ithout license from IHS-,-,-A-A-59870 5 2.8.2 Dual position flow control valve. One dual position flow control valve shall be required to control the current range of output pressure (0 to three PSI or 0 to 70 PSI range). The dual position flow control valve determines which range is currently being
35、 used. 2.8.2.1 Position 1. Zero to three PSI (left hand facing position). 2.8.2.2 Position 2. Zero to 70 PSI (right hand facing position). 2.8.3 Valves. Two regulator valves shall be included in the helium leak detector kit. The helium leak detector kit consists of the following: ground wire, helium
36、 bottle belt, helium connector, air connector, air filling hose, measuring hose, purge hose, injection needle, power cord, bagging material, helium regulator, helium hose, injection hose, sticky tape, and aluminum tape. The left hand valve controls the 0 to three PSI range of helium pressure. The ri
37、ght hand valve controls the 0 to 70 PSI range of helium pressure. The 0 to three PSI pressure is measured by the left hand gauge and the 0 to 70 PSI range is measured by the right hand gauge. 2.9 Bonding strap. The helium leak detector shall be supplied with a bonding strap that electronically bonds
38、 the helium leak detector kit with the aircraft that is being tested. 2.10 Connector tubes. The helium leak detector shall be supplied with all necessary connector tubes to allow the helium leak detector kit to be connected to the helium supply as well as the manifold network to the aircraft. 2.11 I
39、nput voltage source. The leak detector shall operate at 110 or 220 VAC, 50 to 60 Hz, as well as 12 volt direct current (VDC) at 1.2 A using a rechargeable Ni-MH battery or equivalent. 2.12 Batteries. Two batteries shall be supplied and must be a commercially available nickel metal hydride (Ni-MH) ba
40、ttery (or equivalent) that is commercially available. 2.12.1 Battery charger. The helium leak detector shall be supplied with two battery chargers to charge its batteries. 2.13 Foreign power requirements. If the solicitation indicates destinations outside of the United States then the offered items
41、shall have the proper power requirements and electric plugs or adapters for the destinations indicated. 2.14 Operating conditions. 2.14.1 Relative humidity. The helium leak detector shall be capable of operating at a maximum relative humidity of 90%. 2.15 Detector dimensions. The dimensions of the h
42、elium leak detector shall be approximately 8” x 7” x 4”. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59870 6 2.16 Detector weight. The helium leak detector shall not weigh more than 10 pounds including the battery. 2.17 System weight. The hel
43、ium leak detector kit shall not weigh more than 100 pounds including all components. 2.18 Leak detector capability/hardware. All equipment required for each test shall be supplied with the helium leak detector, unless otherwise indicated. A helium source is not required. 2.19 Storage/carrying case.
44、The helium leak detector shall be supplied with a heavy duty storage/carrying case capable of storing the detector and all related components including the operation manual. The case shall be supplied with wheels and two carrying straps for easy transporting of the system. 2.20 Workmanship. The heli
45、um leak detector, including all parts and accessories, shall be constructed and finished in a thoroughly workmanlike manner. Workmanship objectives shall include freedom from blemishes, defects, burrs and sharp corners and edges; accuracy of dimensions, surface finish, and radii of fillets; thorough
46、ness of welding, painting, and riveting; marking of parts and assemblies; and proper alignment of parts and tightness of assembly fasteners. 2.20.1 Bolted connections. Bolt holes shall be accurately punched or drilled and shall be deburred. Threaded fasteners shall be tight and shall not work loose
47、during testing or service usage. 2.20.2 Riveted connections. Rivet holes shall be accurately punched or drilled and shall be deburred. Rivets shall be driven with pressure tools and shall completely fill the holes. Rivet heads shall be full, neatly made, concentric with the rivet holes, and in full
48、contact with the surface of the component. 3. REGULATORY REQUIREMENTS. 3.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operatio
49、nal and maintenance requirements, and promotes economically advantageous life cycle costs. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 3.2 Green Procurement Program. Green Procurement Program (GPP) is a mandatory federal acquisition program that focuses on the purchase and use of environmentally preferable produ
