1、MIL-F-175CEB (SHIPS) AMENDIICMT- 2 23 October 1978 CUPEkSEDING AMENDMENT - 1 17 August 1964 MILITARY SPECIFICATION FLAME ARRESTER. VENTILATION-EXHAUST (NAVAL SHIPBOARD USE) This amendment forms a part of Military Specification YIL-F-17548BSfiIPS) , Bated 23 January 1962 and is approved for use by th
2、e Naval Sea System Conunand and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 2.1, under SPECIFICATIONS: Delete “NIL-S-901“ and substitute: “MIL-S-901 - Shock Tests, H.I. (High-Impact); Shipboard Machinery, Equipment and Systems, Reauirements For.“ 3.1 and
3、 3.2: Delete and substitute: “3.1 Sample for first article ins ection. Prior to beginning production, a sanple shall be examined and tested as spech.2 (see 6.2) .“ PAGE 2 3.4.1: Dalete and substitute: “3.4.1 Shock. The design of the complete flame arrester assembly shall be such that it is capableof
4、assing the high impact rhock tests specified in MIL-S-901 for grade A, class I equipment.“ PAGES 3 THROUGH 5 II 4.1 through 4.6.1: Delete and substitute: “4.1 Res onsibilit for ins ection. Unless othewise specified in the contract, the contractor 5s zesponsiblf for thePper formance of all inspection
5、 requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inapection requirerents specifiee herein, unless disapproved by the Government. The Government reserves the right to perfom. an
6、y of the inspections set forth in the specification where such inspections are deernee necessary to assure supplies and services conform to prescribed requirerents. # “4.2 First article ins ction. Unless otherwise specified (see 6.1). one sanple of each size fsarrcster cavzed in the contract or orde
7、r shall be submitted for first article inspection. First article inspection shall consist of the exmination specified in 4,6 and the tests specified in 4.1.1 through 4.7.4. # “4.2.1 Where an identical size flame arrester has successfully passed the first article inspection within a period of not nor
8、e than 3 years of the date of the cor.tract or order, the first article inspection may be extended by the conunand or agency concerned. “4. 3 guality conformance inspection. I “4.3.1 Lot. All flame arresters of the rame size offered for delivery at one time # *4.3.2 Samplinq for examinatio?. A rando
9、m sample of flame arresters shall be selecte8 shall be consmred a lot. from each lot rn accordance with table II for the examination specified in 4.6. FSC 2040 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-L3548B (2) 20 9979706 OL704b 8 Numbe
10、r of Number of Acceptance Rejection arres ters arresters to be number number in lot examined (de f ectivea 1 (defectives) - - up to 8 All 9 to 1s 7 O 1 16 to 25 10 O 1 26 to 65 15 O 1 66 to 110 20 1 2 111 to 180 25 1 2 181 to 300 35 2 3 t Categories Critical Major 101 102 103 104 105 106 107 1OB 109
11、 110 111 112 113 114 None defined. Size not as specified. Incomplete, component parts missing. Evidence of unauthorized material wee. Casing or enclosure material thickness; inside and outside dimensions nonconforming. Welding (as applicable) incomplete, not free of cracks, nonfusion, heavy porosity
12、 heavy undercut, slag inclusions or not smooth as specified. Casing or enclosure drilled or punched holes nonconforning: holes mis- sing, location and size not as required. Provisions not provide8 to hold filter assembly 8prings in place; springs nonconforming, not located ar required. Casing or en
13、closure hardware (for example, wingnuts, lockwashers, bolts an8 nuts) not provided, size and length nonconforming. Casing surface not free of cracks, aplits, tears, burrs, and sharp edges, or not clean prior to galvanizing or electroplating with zinc as specified. Casing and arresting media coating
14、incomplete, uncoated areas (bare spots) , not free of 8harp projections. Air filter missing, defective, or not as specified. Access cover and gasket miasing, defective, or not as 8pecified. Painting (as applicable) nonconforming. Marking, manufacturers name or trademark, direction of airflow arrows
15、miasing, not permanent, incorrect or illegible. Page 2 of 3 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-L75LlB (2) 20 D 999990b 01901.183 T MI L-F- 1 75 4 8B (SHIPS 1 AMENDMENT-2 I 4.7: Delete and 8UbStitUte: “4.7 Tests.“ t 4.1.1: Delete
16、and substitute: “4.7.1 Shock test. The flame arrester assembly shall be shock tested on the light- weight machin- thetest shall be as specified for type A of JlIL-C-9O1. The shock test shall be conducted prior to tests specified in 4.7.3 and 4.7.4. Evidence of fragmentation or Fissile effect of part
17、s, or deformation of parts that will permit passage of a flame or destroy the watertight integrity of the casing shall be cause for rejection.“ not exceed that specified in 3.4.7.“ t 4.7.2: Add, “The pressure drop of the flame arrester with the air filters removed shall I Add as paragraph 4.7.3.5: “
18、4.7.3.5 Cause for rejection. Failure to prevent the passage of flame from one Bide of the arresterrtheother shall be caue for rejection.“ 4.7.4: Add, “A drop in hydrostatic gage pressure in excess of 0.125 lb/in2 in the 10 minute period shall be cause for rejection.“ I t 4.7.5: Delete. PAGE 6 t 6.1:
19、 Add as item (e): “(e) First article inspection, if other than as specified (see 4.2).“ t 6.2 and 6.3: Delete and substitute: “6.2 First article ins ection. Invitations for bids should provide that the Governnent reserves thah-ive :he requirerent for samples for first article inspection as to those
20、bidders offering a product which has hcen previously acquired or tested by the Govern- must furnish evience with the bid that prior Government approval is presently appropriate or the pending contract.“ Notice: Delete. , ment, and that bidders offering such products, who wish to rely on such product
21、ion or test, NOTE: The margins of this amendment are marked “1“ to indicate where changes (additions, modifications, corrections, deletions) from the previous amendmnt were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these nota
22、tions. Bidders and contractors are cautioned to evaluate the requiremnts of this document based on the entire content irrespective of the marginal notations and rela- tionship to the last previous amendrent. *US. GOVERNMENT PRINTING Off ICE. 1978 - 60301215363 Preparing activity: Navy - CII (Project 2040-Nl43) Page 3 of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
