1、_- MIL-F-24bbb 43 W 777770b 0275272 4 .- . /j! 25-77 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Ccmnander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-
2、5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. . MIL-F-24666(SH) I9 March 1986 MILITARY SPECIFICATION FILTER ELEMENT, SHIP FUEL SYSTEM PRE-FILTER, NON-CLEANABLE, HIGH EFFICIENCY This specification is a
3、pproved for use within the Naval Sea Systems Cormuand, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. ._ 1. SCOPE - ._ - 1.1 Scope. This specification covers high efficiency filter elements for use in navy distillate fuel, F-76 conformi
4、ng to MIL-F-16884 or turbine fuel, aviation grade, JP-5 conforming to MIL-T-5624 (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherw
5、ise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation. _- - - SPECIFICATIONS DISTRIBVTION STATEM“ A Approved for public release; distribution unlimi
6、ted - -_ .- I . , - fi THIS DOCUMENT CONTAINS 21 PAGES. ._ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-F-24bbb 43 9999906 0275293 b i _I. b t NI L-F-24666(SH) .- NILITARY (Continued) NIL-H-5606 - Hydraulic Fluid, Petroleum Base. NIL-T-5624 -
7、 Turbine Fuel, Aviation, Grade JP-5. NIL-R-7362 MIL-A-8625 - Anodic Coatings, for Aluminum and Aluminum Alloys. PIIL-H-8775 MIL-F-8901 - Filter-Separators, Liquid Fuel: and Filter- MIL-F-15618 - Rybber, Synthetic, Solid, Sheet, Strip and Fabricated Parts, Synthetic Oil Resistant. - Hydraulic System
8、Components, Aircraft and Missiles, General Specification for. Coalescer Elements, Fluid Pressure: Inspection Requirements and Test Procedures for. - Filter-Separators and Filter Elements , Fluid, Pressure, Aviation and Diesel Fuel, Naval .- Shipboard. MIL-F-16884 - Fuel, Naval Distillate. MIL-F-8183
9、6 - Filter and Disposable Element, Fluid Pressure, Hydraulic, 3 Micron Absolute. STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-130 - Identification Marking of US Military Property. MIL-STD-889 - Metals, Defin
10、ition of Dissimilar. MIL-STD-1188 - Commercial Packaging of Supplier and Equipment. Attributes. - (Copies of specifications and standards required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activ
11、ity.) 2.2 Other ublications. The following documents form a part of this - specification to the extent specified herein. issues of the documents which are DoD adopted shall be those listed in the issue of the DoDISS specifhd in the solicitation. Unless otherwise specified, the issues of documents no
12、t listed in the DoDISS shall be the issue of the non- Unless otherwise specified, the . government documents which is current on the date of the solicitation. . .?- I * The total volume of fluid in the test system shall remain constant. at the point of injection. (e) Start test recording timer. mati
13、c counter every 2 minutes. the two sensors shall be synchronized. Differential pressura across the test filter shall also be recorded at the same time periods . At 80 percent of specified terminal differential pressure open valve A. Extract a fluid sample of not less than 500 mL on the upstream side
14、 of the test filter assembly. If test is to be terminated at 30 lb/in differential, then when pressure differential across test element reaches 30 lb/in dif- ferential, stop timer, stop fluid sampling flou and stop injection flow from the contaminant system. Continue recording differential pressure
15、across the test filter element. to 180 lb/in differential. for this test phase. the point of injection upon completion of test. Analyze gravimetrically per SAF, ARP 785 the two samples extracted from the contaminant injection system (see 4.7.4.12 (d) and (i). Calculate the average of these two gravi
16、metric lev s. The gravimetric level for each sample shall be within AO percent of this average for the test to be valid. upstream side of the test filter assembly and report in accordance with SAE ARP 785 (see 4.7.4.12 (f). Collect a sample of the contaminant injection fluid Record particle counts o
17、n the auto- The counting time periods of (f) (g) (h) If collapse test is to be run as part of 4.7.5 then continue test Particle counts are not necessary (i) Collect another sample of the contaminant injection fluid at (J) (k) Analyze gravimetrically the fluid sample extracted from the 4.7.4.13 Filte
18、r efficiencies shall be reported for 3 and 5 micrometers particle sizes as filtration ratios (FII) defined in 4.7.4.1. 4.7.5 Collapse test. Procedure. The collapse test procedure shall be as follows: Run filtration ratio test for element no. 3 according to 4.7.4.12 (a) through (f). At 30 lblin diffe
19、rential turn off counters, continue to inject contaminant, and increase flou to 70 gal/min. Haintain increased flou rate until 180 lb/in element differential pressure is reached. Stop contaminant injection. Reduce flou to 10 gal/min. Switch in test circuit clean-up filter. Continue testing with 10 g
20、al/min flow, conforming to 4.7.4.12 (cl through (8). Present filtration ratios (see 4.7.4) on particle counts obtained in 4.7.4.12 (c) through (8). and include in test report. Plot pressure drop versus cumulatiye weight contaminant added 12 _. Provided by IHSNot for ResaleNo reproduction or networki
21、ng permitted without license from IHS-,-,-. MIL-F-2LIbbb LI3 777790b 027530LI 7 W 4.7.5.2 Lriteria for acceptance, The criteria for acceptance shall be as f0110: - (a) There shall be no evidence of structural, meal, or filter aediuo (b) There shall be no decrease in slope of the pressure drop versus
22、 (c) The performance requirements of table II shall be satisfied. failure. contaminant added curve. 4.7.6 Pressure buildue. The test shall be conducted on element no. 2 A typical test circuit is sham on figure 5. at rated flow of the elament. ._ 4.7.6.1 Test procedure. The test procedure shall be as
23、 follows: (a) The test fluid used in the system shall be pre-cleaned as specified in 4.3.1.1. bypassed during testing. - test housing. flow attained by adjusting the varidrive. pressure drop across the element shall not exceed 4.0 lb/in* differential. increments of 6 grams at 4-minute intervals. mo
24、minutes after each test dust addition, pressure differential flow and temper- ature shall be recorded. element shall not exceed 30 lb/in. stopped during the test. A curve shoving differential pressure across the element versus cumulative weight added in grams of standardized ACFTD shall be included
25、in the test report. The cleanup filter assembly must be (b) The pre-filter element under test shall be installed in the (c) The pump shall be started, valves A and B opened, and ratad The differential (d) Standardize ACFI?) shall be added through the dust valve H in The differential pressure across
26、the The pump shall not be (e) - 4.7.7 Flow fatigue. The pre-filter element shall be installed in the test housing and shall be subjected to pressure-flow cycles at flow rates specified in the filter elment from zero to the maximum specified and back to zero by first loaded with the minimum munt of A
27、CFII) necessary to achieve the required ,. 4.7.7.1. A cycle shall consist of increasing the differential pressure across - e- - increasing, then decreasing, the flow through the test element, which has been - - -_ .- _ _ differential pressures. - - =- , -. _. . . -, - -. - 4.7.7.1 The cycling rate s
28、hall not exceed 300 cycles per minute. The - number of cycles and test flow cycles at each differential pressure shall be as follows: Nuisber of cycles at lb/in differential Flow ranges (nal/min) 90,000 cycles at 10 8,000 cycles at 15 2,000 cycles at 20 500 cycles at 30 100 cycles at 120 15 - 50 50
29、- 100 50 - 100 50 - 100 50 - 100 13 _L- - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1- MIL-F-24666 (SH) 4.7.7.2 Perform the filtration ratio test as specified in 4.7.4. Reduce flaw to 15 gal/min and stabilize downstream count as specified in 4.
30、7.4.3 before restarting the contaminant injection fluid flow. ratios to 30 lb/in differential in conformance with 4.7.4.12. efficiency ratios shall be as specified in 4.7.4 and reported for 3 and 5 Run time average filtration Filtration micrometer particle sizes. ._ 4.8 Inspection of packaging. Samp
31、le packages and packs, and the inspec- tion of the preservation-packaging, packing and marking for shipment and storage shall be in accordance with the requirements of section 5 and the documents spec- ified therein. ._ 5. PACKAGING (The packaging requirements specified herein apply only for direct
32、Govern- ment acquisition. of referenced documents listed in section 2, see 6.4.) For the extent of applicability of the packaging requireatenti 5.1 Preservation. Preservation shall be level A or commercial as spec- ified (see 6.2.1). _- 5.1.1 Level A. Each filter element shall be preserved and packa
33、ged by one of the following methods: (a) (b) Each filter element shall be preserved in accordance with Each filter element shall be inserted in a polyethylene bag fabri- MIL-P-116, method IA-13. cated from material conforming to L-P-378, type I, class l, thick- ness 0.0040, and closed by heat sealin
34、g. element shall be placed in a close-fitting box conforming to PPP-B-636, WC, style optional. Closure shall be in accordance - with method V of the appendix to the box specification. shall be sealed with tape conforming to PPP-T-60, type IV. The bag containing the The box 5.1.2 Commercial. Commerci
35、al preservation shall be in accordance with . HIL-STD-1188. . -. 5.2 Packing. Packing shall be level A, B, or commercial as specified -. . . _ . - =- . I. i - , _- (see 6.2.1). . - _. .c.- -9 . . .- - 5.2.1 Level A. The filter elements shall be packed together in close- fitting boxes conforming to P
36、PP-B-601, overseas type, style optional. weight of each box shall not exceed 200 pounds. QQ-S-781, class I, type I or IV, size as applicable. (see 6.2.1) strapping shall be finish B. finish A. The gross Strapping shall conform to Unless otherwise specified, When specified, strapping shall be 5.2.2 L
37、evel B. The filter elements shall be packed together in close- fitting boxes conforming to PPP-B-601, domestic type, style optional; PPP-B-640, forming to PPP-B-601 or PPP-B-640 shall not exceed 200 pounds. class 2, style optional; or PPP-B-636, V3c. The gross weight of each box con- t 14 I Provided
38、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-24bbb Y3 m 77777Ob 027530b O 5.2.3 Commercial. Filter elements, preserved as specified in 5.1 shall be packed in accordance with MIL-STD-1188. ._ 1- 5.3 Harking. Marking for military levels of protection
39、shall be in accordance with MIL-STD-129. NIL-STD- 1188. Commercial marking shall be in accordance with 6. NOTES 6.1 Intended use. The filter elements covered by this specification ara intended for use as protection fox filter/coalescers qualified to MIL-F-8901 sud HIL-F-15618 in ships fuel service s
40、ystem pre-filter assemblies. Fuel service systems operate with either MIL-F-16884 or MIL-T-5624 fuel at operating pressurer of 150 lb/in maximum. 6.2 Ordering data. 6.2.1 Acquisition requirements. Acquisition documents should specify the following: (a) (b) (c) Title, number, and date of this specifi
41、cation. If first article inspection is required (see 3.1). Level of preservation, packaging and packing required (see 5.1 and 5.2). 6.2.2 Data requirements. When this Specification is used in an acquisi- tion and data are required to be delivered, the data requirements identified balai shall be deve
42、loped as specified by an approved.Data Item Description (DD Form 1664) and delivered in accordance with the approved Contract Data Requirements List (CDRL), incorporated into the contract. When the provisions of DoD FAR Supplement, Part 27, Sub-Part 27.410-6 (DD Form 1423) are invoked and the DD For
43、m 1423 is not used, the data specified below shall be delivered by the contractor in accordance.with the contract or purchase order requiremants. Deliverable data required by this specification are cited in the following paragraphs. :.c . Paragraph no. Data requirement title Applicable DID no. Optio
44、n I. F ._ 7.- . -. 6 c 4.4.1, First article inspection DI -T-4902 4.7.1.1 report -. -* ,: - 4.5.1 Failure summary report D1-R-20612 -o- - (Data item descriptions related to this specification, and identified in section 6 will be approved and listed as such in DoD 5000.19L., Vol. II, MSDL. Copies of
45、data itam descriptions required by the contractors in connection with specific acquisition .functions should be obtained from the Naval Publications and Form Center or as directed by the contracting officer.) 5 of this rpecification required to be performed to meet a data requirement may be uaived b
46、y the contracting/acquisition activity upon certification by the offaror that identical data were submitted by the offeror and accepted by the . 6.2.2.1 The data requirements of 6.2.2 and any task in sections 3, 4, or Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
47、se from IHS-,-,- MIL-F-24666 43 m 777770b 0275307 2 m MIL-F-24666(SH) Government under a previous contract for identical item acquired to this specifi- cation. contract regardless of whether an identical item has been supplied previously (for example, test reports). This does not apply to specific d
48、ata which may be required for each 6.3 First.article inspection. When a first article inspection is required, the item should be first article samplL. four units. The contracting officer should include specific instructions in acquisition documents regarding arrangements for examinations, approval o
49、f first article test results and disposition of first articles. bids should provide that the Government reserves the right to waive the require- ment for samples for first article inspection to those bidders offering a product which has been previously acquired or tested by the Government, and that bidders offering such products, who wish to rely on such production or test, must furnish evidence with the bid that prior Government approval
