1、MIL-S-l7849E(SH) AMEHDMENT 2 22 June 1995 SOPEESEDIAXG HILITARY SPECIFICATION This STATEMENT A. Approved for public rrleasc; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MfL-S-l7849E(SH) AMEMDMENT 2 A 36 - Standard Speci
2、fication for Structural Steel. A 105 - Standard Specification for Forgings, Carbon Steel, for Piping A i06 - Stanciard Specifiatin far Smless Carboa Steel. Pipe Eigh A 285 - Standard Specification or Pressure Vessel Plates, Carbon Steel A 513 - Standard Specification for Electric Reeistsnce Welded C
3、arbon and A 516 - Standard Specification for Pressure Vessel Plates, Carbon Steel, Components. Temperature Service. Lou and Intermediate Tensile Strength. Alloy Steel Mechanical Tubing. for Moderate and Lower-Temperature Service. A 515 - q)ecifisatisR EU “7 “- “L“ DGUUCIJ bULUUl4 A:oT St=: ? Delete
4、and substitute: - Examination and Tests First article Quality Conformance POST-FOUNDRY PRODUCTION: Pilot Pressure Boundary Casting 4.7.11 -“ PRODUCTION: r 1 Eramina t ion 4+6 4.6 Shock 4.7.5 C“ Hydrostatic 4.7.1 4.7.1 1 Tightness (leakage) 4.7.2 4.7.2 Torque i 4.7.2.1 4.7.2.1 Operating Capacity 4.7.
5、3 -c- Pres sure Drop 4.7.4 “C Spray Deflector 4.7.7 “ Safety Interlock 4.7.9 4.7.9 Equalizing Flow Rate 4.7.13 4.7.13 Operational Cycling 4.7.12 -“ , Basket Tests: TABLE YI: Delete Maximum particle passedn and substitute “Filtration ratio Filter element efficiency)“. 7 Provided by IHSNot for ResaleN
6、o reproduction or networking permitted without license from IHS-,-,-MIL-S-l7844E(S?A) AMEMDMENT 2 PAGE 19 4.7.1: Delete end subsritute: “The test shall be an internal pressure test with water or system fluid at B viscosity aquivalenet to water. Where water is detrimental to the unit being tested. co
7、rrosion ihhibitors shall be added. Fach completely assembled strainer shall be “TGFted to a pressure equal to 150 percent of the design pressure for a duration of 60 minutes. Dbring this test, the changeover valve shall be positioned tQ allow flow to both basket compartments. Strainers not mintaizin
8、g zero leakage shall be rejected. 4.7.2: Delete .first sentence and substitute: “Each strainer shall be teated for a duration of 30 minutes to verify the seal tightness for each valve seat of the 3-way changeover valve at 100 percent of design pressure using test fluid a6 specified in 4.7.3. 1.7.3:
9、Add after first sentence: LUhen specified (see 6.21. a range of pressure drops at specified operating conditions (see 6.2) shall be developed.“ PAGE 20 Add new paragraph 4.3-1: “4.3.1 Assembly dravfnq. Assembly drawings shall be furnished with each RW filter basket assembly submitted far first artic
10、le tests. Prior to authorization for first article testing, two sets of assembly drawings, in accordance with MIL-STD-loo, shall be furnished with each new model filter basket assembly submitted for first article tests. Assembly drawing shall show a cutaway sectian of details in their noml assembly
11、positions and shall carry part numbers of details and eubassemblies. The following data shall be furnished on or together with, the assembly drawings: la) Outline dimensions of the cornplete assenMy. (b) Bill of material, listing specifications grade and condition Dr other c) General nates stating c
12、omplete performance data including rated flow data needed to identify the material proposed. capacity, pressure drop data, pressure rating, filtration rating, and dirt holding capacity. filter element drawings shall include a CrO6S-sectional view with each individual components identified. Proprieta
13、ry information, auch as number of equare inches of media or composftion of media is not required (d) Unless such information is provided in the first article test report, Dimensioning and tolerance on drawing shall be in accordsnce with ANSI Y14.5.“ 4.7.61 Delete two places “basket“ and substitute “
14、basket assembly. After first sentence add: “Differential pressure shall be applied in a rapid manner, one minute or less.“ H Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.7.6: Add gfter last sentence Mimt swelling of the plestad filter media afte
15、r testing does not constitute failure.“ PAGES 20 AND 21 4.7.8.1.1 and Delete similar to“ and substitute “in accordance with“. 4.7.8.1.2: Delete baskets“ and substitute “haket assemblies“. Oelete “ba8ket“ and substitute basket assembly“. PAGE 21 4.7.8.2: Delete and substitute: “4.7.8.2 2. After compl
16、etion of 4.7.8.1.1, the elements shall be subjected to a filter element efficiency test using the specified test duat see 6.2) and the test procedure specified in MSI 333.31.“ 4.7.8.3: Delete and substitute: “The strainer basket assembly and its straining elements shall be tested for effectiveness o
17、f filtration using clean oil of the viscosity specified in 4.7.3(a). Oil shall be pumped through the strainer at rated flou. At the rate of 10 grams per 4 minutes, 1 gram per gpm of specified in 4.7.8.3.1 shall be added. After all dust has circulated, the pressure differential through the strciner a
18、nd total weight of test dust retained by the basket assembly shall comply with 3.3.6.6.2. Add new paragraph 4.7.8.3.1: 4.7.8.3.1 Test contaminant. Unless otherwise specified (see 6.2) the test dust contnmhant shall be of the propoeed IS0 test dust test grade identified below. The dust is available f
19、rom Powder Technology Inc., (PTI), P.O. Box 1466, Burnsville, MN 55337. J 10 20 40 BO 88-89 77-79 61-64 38-4 1 10-12 79-82 29- 33 11-13 0-1 54-58 Test dust grade Medium Coarse o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-l7849ESH) “ENT 2 P
20、AGE 22 * 4.7.12: Delete: *. and with the requirements of 4.3 shall be demonstrated.“ and substitute: “. Upon satisfactory compietion of this test the unit shaii be refurbished Co new condition before being offered for delivery.“ Delete “Alternate“. Delete and substitute: Inlet and outlet connection
21、type, size and Delets? -rlj- anti substitute “(a)=. ue&ece LI biitiitf (b) . Delete +see 6.6.1)“ and substitute “(see 6.6.1 and 5.3.1.1). Alternate magnet characteristics (see table If). Alternate shifting mechanisms (see 3.3.1.1.2). Test dust (see 4.7.8.3.1). Terminal differential pressure drop see
22、 3.3.6.6.2 and 4.7.8.3). Whether a range of differential pressure drops shall be reported flange face finieh (see 3.3.2.1, 3.3.6.4.1 and 3.3.6.4.2j. “7“ .,m for sarioe spereting znbltins :E$ 4,?.3:. Ailtemate filtratior! rati* (filter element efficienry) see 4.7.8.2?.n PAGE 28 6.3: Delete “DI-T-S31f
23、AL and substitute “DI-NDTI-81307“ under “DID Number“. 6.6: Delete “quality assurance“ and substitute “first article inspection. * 6.7. Line 1: Delete “-* and substitute “Preinstallation“. Line : Delete depreaervatlon and substitute *preinstallation+ . Line : Delete depreservation for and substitute
24、*to return the unit to active status. “6.8 Definitive military specification part number. The military specification patt number is B definitive part number which corresponds to the type, class and size of strainers covered by this specification. Provided by IHSNot for ResaleNo reproduction or netwo
25、rking permitted without license from IHS-,-,-MIL-S-l7B49E(SH) AMEHDMENT 2 6.6.1 Cataloainn data. For cataloging purposes, pert numbers for the strainers are assigned a5 follows: US17849 - X - XX.XX Miiitary specificatian number size (NPS of inletloutlet “.I piping) - - . - . .T*-and class code lette
26、r * 6.8 :1.1 Type snd c1as.s. The type and class of strainer are iaentiiied by a single letter (see table IX), .* TABLE W. Code letter to type and class, * 5.9: Benamber to 6.10 and substitute as new 6.9: “6.9 Subject term (key word) listinq. Basket Duplex Filtration Fuel Lube oil Sea water Valves Preparing activity: Nav - SH (Project 4730-Nl15) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
