1、, Beneficial comments recommendations, additions, deletions, clarifications etc. and any other data which may improve this document should be sent to: Commander, SEA 03R42, Naval Sea Systems Command, 2531 Jefferson Davis Hwy, Arlington, VA 22242-5160. c A-A-59000A SUPERSEDING A-A-5 9 O00 9 February
2、1995 ri1 1997 COMMERCIAL ITEM DESCRIPTION STRAINERS, SEDIMENT, PIPELINE, SELF-CLEANING (MANUAL OR AUTOMATED) The General Service Administration has authorized the use of this commercial item description, for all federal agencies. 1. SCOPE 1.1 Scone. This commercial item description covers both manua
3、l and automated self-cleaning pipeline sediment strainers. 1.2 Intended use. The strainers specified are intended for installation in sea water piping systems on the discharge side of the pump. 2. CLASSIFICATION . Self-cleaning strainers shall be of the following types, 2.1 Classification classes, s
4、tyles, and sizes as specified (see 7.1): Type I - Manual hand wheel actuation. Type II - Electric motor actuation. Class 150 - 150 pounds per square inch gage (psig) pressure rating. Class 250 - 250 psig pressure rating. Style 1 - One screen, angled flow, sizes 2, 2+, and 3 inch. Style 2 - Two scree
5、ns, inline flow, sizes 235, 3, 4, 6, 8, 10, Style 3 - Four screens, inline flow, sizes 14 and 16 inch. Style 4 - Six screens, inline flow, size 20 inch. and 12 inch. AMSC NIA FSC 4730 . Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking
6、 permitted without license from IHS-,-,- A-A-59000A 9999974 0375860 552 A-A-59000A 3. SALIENT CHARACTERISTICS 3.1 Codes and standards. Strainer shall comply with the applicable requirements of table I. TABLE I. Refer ence data. 3.2 Desian and construction . Each strainer shall be of the type, class,
7、 style, and size as specified (see 2.1)- Each strainer shall contain one or more rotatable screens and fixed scraper bars for the purpose of cleaning the screen without shutting down operation of the system. shall be flanged and attached to the body by bolts. Each cover shall effect a positive seal
8、on an O-ring recessed in the cover plate- adjustment covers on strainer sizes 4 inches and above shall be bolted to flanges on the strainer body. provided to form a watertight seal. fitted with a drain outlet. Compartment covers Blade inspection/ An O-ring recessed in the cover shall be The sump bel
9、ow the screen(s) shall be 3.3 Material . The material requirements for all strainer components shall be in accordance with table II. t I 3.4 Screen. The screen shall be made of one unit. Screen shall be of the perforated plate construction. All seam welds shall be continuous. The total clearjopen ar
10、ea of the perforations shall be sufficient to allow a maximum clean pressure drop of 6 psi at the design flow rates as shown in table III. Unless otherwise specified (see 7.1), perforated holes are sized as specified by 7.6.3). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted w
11、ithout license from IHS-,-,-A-A-59000A H 9999u74 0175861 499 M Part Bodies, covers (parts in contact with sea water) A-A-59000A Applicable Material Document s Remarks Copper-nickel ASTM B 369 C96400 alloy Aluminum bronze ACTM B 148 C95800 3.4.1 -h test. The strainer screen shall be tested by applyin
12、g a differential pressure across the screen equal to 100 percent of the specified strainer design pressure for the applicable type and class, using water for a duration of 10 minutes. Differential pressure shall be applied in a rapid manner, one minute or less. Screen which distort, stretch, or exhi
13、bit other weaknesses shall be rejected. Collar, handwheel 3.5 Actuation . Each strainer screen shall be fitted with a shaft along its rotational axis, which penetrates the compartment cover through a watertight seal. Outside the housing, the shaft shall be capable of being fitted with either a manua
14、l hand wheel (Type I) or an electric motor actuator (Type II). Each manually actuated handwheel shall be sized and configured so that maximum required operating force is less than 50 pounds (lbs). For certain hazard areas, such as installation in a JP-5 pump room, the motor actuator (Type II) shall
15、be explosion proof. Cast tin bronze ASTM B 61 C92200 3.6 ScraDer barg . The scraper blades in all strainers size 4 inches and above shall be capable of inspection and adjustment via a removable watertight inspection cover on the strainer body, without having to further disassemble the strainer. Each
16、 scraper bar shall be aligned so that the screen can be turned in either direction without being damaged. operators, (parts TABLE II. Naterials remired for 9 trainers. ASTM B 505 C95800 Scraper Threaded fasteners NiCu ASTM B 127 N04400, NO4405 NiCu alloy ASTM F 467 N04400, NO4405 ACTM F 468 Fluoroca
17、rbon CRES ASTM A 276 C31600 sea water) I I I MIL-R-83248/1 For all except threaded bosses screen “O“ rings MIL-R-83248/2 Threaded bosses CuNi plate ASTM B 122 C71500 NiCu plate ASTM B 127 N04400, NO4405 3.7 Funct ional Derforman ce. Unless otherwise specified (see 7.1), design flow capacity and desi
18、gn temperature shall be as specified in table III. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59000A E %c?99974 0375862 325 E A-A-59000A 3.7.1 wtionFi1 cvclina tests . The strainer shall be tested for a total of 600 cycles at design pressu
19、re. compliance with the required operating force of 50 pound (lbs) or less and zero leakage shall be demonstrated, the unit shall be refurbished to new condition before being offered for delivery At the completion of the 600 cycles, Upon satisfactory completion of this test TABLE III. Functional Der
20、fom. NOTE: 1. Screen perforation 1/32-inch. 3.8 EDveloFe dimensions . Maximum envelope dimensions (inches) shall be in accordance with table IV. 3.9 . The strainer body and covers shall be of uniform quality and condition, free from blow holes, porosity, hard spots, shrinkage defects, cracks, and ot
21、her defects. All surfaces shall be smooth and well cleaned. The inside surfaces of strainers shall be well cleaned and free from sharp edge8. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59000A 3999974 01758b3 2bL A-A-59000A TABLE IV. BveloD
22、e UnsioELg. Manual actuation Mc II I 3 tor actuation Screen Flange removal Width to flange learance , 13.50 15.50 17-25 Notes : 1. Flange-to-flange dimension for single screen strainers are measured 2. Width dimension is defined as the widest point of the unit (ie 90 3. Length dimension is defined a
23、s the longest point of the unit (ie from the inlet flange to the flush outlet opening. degree to handwheel or motor). handwheel to handwheel). 4. REGULATORY REQUIREMENTS 4.1 Recovered materials . The offeror/contractor is encouraged to use recovered materials to maximum extent practicable, in accord
24、ance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). . Zinc or cadmium plating shall not be used on any 4.2 Prohibited material part of the strainer. 4.3 Mercyrv exdusion . During the manufacturing process, tests, and examination, the product to be offered for acceptance shall not
25、 come in direct contact with mercury or any of its components, nor with any mercury containing device employing a single boundary of containment. The strainer shall be free of mercury contamination. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A
26、-A-59000A 9999974 0375864 LTB A-A-59000A . 5. QUALITY ASSURANCE PROVISIONS 5.1 Product. The products provided shall meet the salient characteristics of this commercial item description, conform to the producers own drawings, specifications, standards, and quality assurance practices, and be the same
27、 product offered for sale in the commercial market- The government reserves the right to require proof of such conformance. . Where other specifications form a part of this 5.2 Uditional inspection comercial item description, sampling, examination, and tests shall be conducted as required by the per
28、tinent specification, unless otherwise specified in the contract or order (see 7.1). *. 6. PACKAGING 6.1 General re-ement . Commercial packaging shall be in accordance with the requirements of ASTM D 3951. . 6.1.1 Con tainer modification weight shall be provided with a minimum of two, 3- by 4-inch n
29、ominal wood skids laid flat, or a skid- OC sill-type base which will support the material and facilitate handling by mechanical handling equipment during shipment, stowage, and storage. Shipping containers exceeding 200 pounds gross 7. NOTES . 7.1 wition re- following. Acquisition documents must spe
30、cify the Title, number, and date of this commercial item description, Type, class, and style required (see 2.1). Strainer screen design and characteristics (see 3.4). Motor design is required (see 3.5). The required design flow capacity, pressure, temperature, and clean Technical manuals and drawing
31、s required (see 7.3). Whether repair parts are required (see 7.4.1)- Issue of DODISS to be cited in the solicitation, and if required, pressure drop (see 3.1). the specified issue of individual documents referenced (see 7.2.1.1). 7.2 -. 7.2.1 Government documents. The following documents of the issu
32、e in effect on date of invitation for bids or request for proposal, form a part of the commercial item description to the extent specified. . The following 7.2.1.1 -standards. anddboohg specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless other
33、wise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 7.1). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
34、from IHS-,-,-A-A-59000A m 9999974 0375865 O34 W A-A-59000A SPECIFICATIONS MILITARY MIL-S-901 - Shock Tests, H.I. (High-Impact); Shipboard Machinery, Equipment, & Systems, Requirements for. Fractional H.P., Shipboard Use. MIL-M-17059 - Motors, 60-Cycle, Alternating Current, MIL-F-20042 - Flanges, Pip
35、e, Bronze (Silver Brazing). MIL-M-38510 - Microcircuits, General Specification for. MIL-R-83248 - Rubber, Fluorocarbon Elastomer, High Temperature Fluid and Compression Set Resistant, Temperature Fluid, and Compression Set Resistant (O-rings, Class I, 75 Hardness). Temperature Fluid, and Compression
36、 Set Resistant (O-rings, Class 2, 60 Hardness). MIL-R-83248/1 - Rubber Fluorocarbon Elastomer, High MIL-R-83248/2 - Rubber Fluorocarbon Elastomer, High STANDARDS MILITARY MIL-STD-1686 - Electrostatic Discharge Control Program for Protection of Electrical and El-ectronic Parts, Assemblies, and Equipm
37、ent (Excluding Electrically Initiated Explosive Devices) Metric. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 7.2.2 Pon Gov
38、ernment .oublication% . The following documents form a part of this document to the extent specified herein. issue of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODIS
39、S are the issues of the documents cited in the solicitation (see 7.1). Unless otherwise specified, the AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM A 276 - Standard Specification for Stainless and Heat- ASTM B 61 - Standard Specification for Steam or Valve ASTM B 122 - Standard Specificati
40、on for Copper-Nickel-Tin Resisting Steel Bars and Shapes. Bronze Castings. Alloy, Copper Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip and Rolled Bar, (UNS N04400) Plate, Sheet, and Strip. Sand Castings. ASTM B 127 - Standard Specification for Nickel-Copper Alloy AST
41、M B 148 - Standard Specification for Aluminum-Bronze ASTM B 369 - Copper Nickel Alloy Castings. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59000A 9999974 OL750bb T70 = A-A-59000A ASTM (Continued) ASTM B 505 - ASTM B 584 - ASTM D 3951 - AST
42、M F 467 - ASTM F 468 - Standard Specification for Copper-Base Alloy Continuous Castings. Standard Specification for Copper Alloy Sand Castings for General Applications. Comercial Packaging, Practice for. Standard Specification for Nonferrous Nuts for Standard Specification for Nonferrous Bolts, Gene
43、ral Use. Hex Cap Screws, and Studs. (Application for copies should be addressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428- 2859. ) FLUID CONTROL INSTITUTE (FCI) 78-1 - Pressure Rating Standard or Pipeline Strainers Other Than nYn Type, (App
44、lication for copies should be addressed to the Fluid Control Institute, Inc., P.O. Box 3854, Tequesta, FL 33458.) INSTRUMENT SOCIETY OF AMERICA (ISA) 575.02 - Control Valve Capacity Test Procedure. (Application for copies should be addressed to the Instrument Society of America, 67 Alexander Dr., P.
45、O. Box 12277, Research Triangle Park, NC 27709.) (Non-Government standards and other publications are normally available from the organization that prepares or distributes the documente. These documents also may be available in or through libraries or other informational services.) 7.2.3 Order of me
46、cedence. In the event of a conflict between the text of this commercial item description and the references cited herein, the text of this commercial item description takes precedence. Nothing in this commercial item description, however, supersedes applicable laws and regulations unless a . specifi
47、c exemption has been obtained. 7.3 3g,cai manuals . The requirement for technical manuals should be considered when this commercial item description is applied to a contract, technical manuals are required, military specifications and standards which have been cleared and listed in DoD 5010.12-L (AM
48、SDL) must be listed on a separate CDRL (DD Form 1423), included as an exhibit to the contract. The technical manuals must be acquired under a separate contract line item in the contract , If 7.4 Drderinu mare or rep- . When ordering spare parts or repair parts for the equipment covered by this comme
49、rcial item description, the contract should state that such spare parts and repair parts should meet the same requirements and provisions as the parts used in the manufacture of the equipment. Packaging for such parts should also be specified. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59000A H 9393974 0375867 907 M Class 150 A Class 250 C A-A-59000A B D 7
