NAVY MIL-G-18916 (3)-1985 GOVERNORS STEAM DRIVEN PUMP PRESSURE REGULATING NAVAL SHIPBOARD《海军军舰上的气流驱动泵压力调节调节器》.pdf

1、MIL-G-l8916(SHIPS) AMENDMENT 3 8 July 1985 SUPERSEDING AMENDMENT 2 15 January 1964 MILITARY SPECIFICATION GOVERNORS, STEAM DRIVEN PUMP PRESSURE REGULATING, NAVAL SHIPBOARD This amendment forms a part of Military Specification MIL-G-l8916(SHIPS), dated 19 September 1955, and is approved for use by th

2、e Naval Sea Systems Command, Department of the Navy and is available for use by all Depart- ments and Agencies of the Department of Defense. PAGE 3 2.1, continued, Under Military Specificattons: Add “MIL-F-1183 - Fittings, Tube; Bronze, Cast Silver-Brazing. “MIL-Q-9858 - Quality Control System Requi

3、rements.“ PAGE 4 2.1, continued, Under Bureau of Ships Drawings: Add “B-214 - Root Connections for Attaching Piping.“ PAGE 6 * 3.1 Delete and substitute: “3.1 First article. When specified (see 6.l), a sample shall be subjected to first article inspection (see 4.4 and 6.2): PAGE 8 3.2.7.4: Delete. P

4、AGE 10 Add paragraph 3.2.7.6.3: “3.2.7.6.3 Flange bolting shall straddle the vertical centerline. Where an odd number of bolts is used, the vertical centerline at the top of the flange shall be straddled. FSC 4820 DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited 1 of 4 Li

5、censed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PAGE 11 Add paragraph 3.4.2.5: “3.4-2.5 No packing glands, stuffing boxes, metal bellows or syphons shall be used on any automatically moving parts.“ 3.4.3.3: Dele

6、te and substitute: “3.4.3.3 Unless otherwise specified in the contract or order, the main steam governing valves shall not be furnished as a part of the class 2 governors (see 6.1). When the main steam governing valves are required by the contract or order, the following shall apply: “3.4.3.3.1 Valv

7、e seats may be separate or integral with the body. Where separate seat rings are used they shall be seal welded or seal brazed to the body to prevent steam cutting through the threads. shall be faced with cobalt chromium composition facing (see table IV, note 1). Where seats are integral, they “3.4.

8、3.3.2 Control valve packing shall be of the self lubricating type for temperatures up to 450F. ing box or other suitable means to insure low steam friction shall be used, and the bonnet and yoke shall be of a design to insure adequate cooling. shall be furnished with the packing external to the stuf

9、fing box, enclosed in a waterproof bag which shall either be wired to the valve or inserted in the body bore and protective flange caps attached to the line flanges. For temperatures over 450F, lubricating of the stuff- All valves “3.4.3.3.3 Valve packing glands shall be of bolted construction.“ PAG

10、E 12 3.4.3.4: Delete and substitute: “3.4.3.4 Ships service air will normally be supplied to the governor at pressures varying from 65 to 100 p.s.i.g. operate in accordance with this specification when the air supply is as low as The governor shall be designed to 65 p.S.i.g-“ PAGE 13 3.4.3.9: Delete

11、 and substitute: “3.4.3.9 All pipe connections other than for the control air shall be flanged, or have a union for disassembling. Flanges, if used, shall conform to the dimensions given in the applicable flange standards, and shall be finished on their gasket seats with a fine tool (F2 finish). Uni

12、ons shall be in accor- dance with MIL-F-1183 for copper tubing, and to commercial standards for steel tubing. “3.4.3.9.1 When it is not feasible to provide a flange or union connection directly on the unit, a nipple may be welded or silver-brazed directly into the unit and the breakdown joint locate

13、d accordingly. The requirements of Drawing B-214 should be followed in thle construction.“ 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-G-18916 (3) rB m 9999706 0273523 9 m I MIL+-18916(SHIPS) AMENDMENT 3 PAGE 15 Top of page: Delete “Table I

14、II - Materials (contd).“ and substitute “Table IV - Materials (contd).“ PAGE 23 * 3.9.5(g): Delete “qualification approval, and“. PAGE 25 4.1: Delete and substitute: “4.1 Examination. Each governor shall be examined to determine conformance with this specification as to material, dimensions and work

15、nmnship.“ 4.3.1, lines 1 and 2: Delete “as selected by the Government inspector.“ PAGE 26 * 4.4: Delete “Qualification“ and substitute “First article“. * 4.4.1, line 1: Delete “qualification“ and substitute “first article te s t i ng “ . * 4.4.1, line 2: Delete “Qualification“ and substitute “First

16、article tes t ing * . * 4.4.3: Delete “qualification“ and substitute “first article“. 4.5: Delete and substitute: “4.5 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specif

17、ied herein. the supplier may utilize his own facilities or any commercial laboratory accep- table to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform

18、to prescribed requirements. Except as otherwise specified, “4.5.1 Quality system control. The supplier shall provide and maintain a quality control system acceptable to the Government. The system of quality control shall be in accordance with MIL-Q-9858 and as specified in 4.5.1.1 to 4.5.1.3.1 inclu

19、sive. bility to furnish governors meeting the requirements of this specification. The supplier is in no way relieved of the final responsi- “4.5.1.1 Description of procedures. Procedures shall be assembled in manual form and shall indicate organization and responsibility for the control of quality.

20、3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-L7Lb (3) Q 9 979790b 027352r O MIL-C-l8916(SHIPS) - AHENDKENT 3 “4.5.1.2 Inspection during manufacture. The supplier shall establish and maintain inspection at approximately located points in th

21、e manufacturing process, beginning with the receipt of raw materials and subcontracted parts through fabri- cation, assembly, testing and preparation for shipment of completed units, to assure continuous control of quality of parts, components, assemblies, and construction including welding and fabr

22、ication. “4.5.1.3 The supplier shall provide and maintain gauges, Instruments and other measuring and testing devices necessary to assure that supplies conform to contract requirements. These devices shall be calibrated against measurement standards or designated measuring equipment at established p

23、eriods to assure continued accuracy. for maintenance and calibration of such equipment based on the type, purpose and degree of usage. The supplier shall prepare and maintain a written schedule “4.5.1.3.1 All instruments used in performance acceptance tests shall be calibrated before and after tests

24、 PAGE 32 * 6.1: Add: “(9) First article inspection, if required (see 3.1).“ * 6.2: Delete and Substitute: “6.2 First article inspection. Invitations for bids should provide that the Government reserves the right to waive the requirement for samples for first article inspection as to those bidders

25、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 is presently appropriate for the pending contract . * PAGE 35 * I

26、ndex, first column: Delete “Qualification“ and substitute “First article“. * Index, first column: Delete “Tests, qualification“ and substitute “Tests, first article“. NOTE: The margins of this amendment are marked with an asterisk to indicate where changes (additions, modifications, corrections, del

27、etions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Preparing activity : Navy - SH (Project 4820-N497) *u.$. QOVERNMENT PRINTING OFFICE 1886 - S06-038/23162 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-