1、MIL-G-3087C (SHIPS) W 15 November 1973 HIL-G-3087B (SHIPS) 14 October 1955 (Set 6.6) MILITARY SPECIFICATION GENERATOR SETS, STEAM TURBINE (DIRECT AND ALTERNATING CURRENT) NAVAL SHIPBOARD USE 1. SCOPE generator sets rated up to 1000 kilowatts (kW) direct current(dc) and 300 to 2500 kW alternating cur
2、rent (ac) . 1.1 =. This specification covers continuous duty shipboard installed steam turbine 1.2 Classification. The steam turbine generator sets shall be of the following types and classes as specified (see 6.1.1): Type I - Package. Type II - Nonpackage. Class A - Dc. Class B - Ac. 2. APPLICABLE
3、DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form SPECIFICATIONS MILITARY MIL-C-104 - MIL-P-116 - MIL-B-131 - HIL-B-857 - MIL-S-901 - a part of this specification to the extent specified herein: Crates, Wood: Lumber and Plywood
4、 Sheathed, Nailed and Bolted. Preservation-Packaging, Xethods of., Barrier Material, Water Vaporproof, Flexible, Heat Sealable. Bolts, Nuts and Studs. Shock Tests, X.I. (fligh-Impact); Shipboard Machinery, Equipment and Systems, Requirements for. MIL-C-915/30 - Cable, Electrical, 1000 Volts, Type TS
5、GU. MIL-D-1000/2 - Drawings, Engineering and Associated Lists. MIL-D-1000 - Drawings, Engineering and Associated Lists. NIL-E-2036 - Enclosures for Electric and Electronic Equipment, Naval Ship- HIL-R-2729 - Regulator Set, Voltage, A.C. Generator (Naval Shipboard Use). HIL-G-3111 - Generators, Elect
6、ric, Direct-Current (Naval Shipboard Use). MIL-G-3124 - Generator, Alternating Current, 60 Cycle (Naval Shipboard Use). MIL-L-3150 - Lubricating Oil, Preservative, !4edium. MIL-C-5015 - Connectors, Electric, “AN“ Type, General Specification for. XIL-Q-9858 - Quality Program Requirements. MIL-“9868 -
7、 Microfilming of Engineering Documents, 35W, Requirements for. MIL-C-9959 - Container, Flexible, Reusable, Water-Vaporproof. MIL-“15071 - :4anuals, Technical: Equipments and Systems Content Require- XIL-T-15108 - Transformers, Power, Step-Down, Single Phase, 60-Cycle, 1-KVA board. ments for. Approxi
8、mate :tinirnum Rating; and Reactors (Balance Coils) - Dry, Naval Shipboard. Electrical and .lechanical Equipment (Naval Shipboard Use). %IL-P-15137 - Provisioning Technlcal oocumentation for Repair Parts for MIL-T-15377 - Temperature :lonltor Lquipment, Naval Shipboard. MIL-C-154 30 - Condenser, Ste
9、am, Surf ace : Naval Shipboard. MIL-E-15465 - Ejector Assemblies, Air. MIL-E-16298 - Electric llachrnes ilavlng Rotating Parts and Associated Repair MIL-C-16173 - Corrosion Preventrve Compound, Solvent Cutback, Cold Application. MIL-P-16789 - Preservation, Packaging, Packing and :.larking of Pumps G
10、eneral, Parts: Packaging of. and Assoclateci Repalr Parts. FSC 6115 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-3OB7C (SffIPS) IULITARY (continued) MIL-P-17286 - MIL-E-17555 - MIL-W-19088 - MIL-L-21260 - MIL-G-21410 - MIL-M-24365 - MIL-T-24
11、398 - NIL-W-38761/2 STANDARDS MILITARY MIL-STD-129 - MIL-STD-278 - MIL-STD-470 - ML-STD-4 7 1 - MIL-STD-721 - MIL-STD-756 - MIL-STD-777 - MIL-STD-785 - MIL-STD-882 - Propulsion and Auxiliary Steam Turbines and Gears (Including Repair Parts, Tools, Accessories and Instruments); Packaging of. Parts, P
12、ackaging and Packing of. Electronic and Electrical Equipment, Accessories and Repair Wattmeters, Switchboard Type, 4-1/2 Inch. Lubricating Oil, Internal Combustion Engine, Preservative and Governing Systems, Speed and Load-Sensing (for Electric Maintenance Engineering Analysis: Establishment of, and
13、 Pro- Break-In. Generator Sets). cedures and Formats or Associated Documentation, General Specification for. (Naval Shipboard Use). Turbine, Steam and Reduction Gear, Auxiliary, Generator-Drive - Microfilming and Photographing of Enginoaring/Tcchnical Data and Related Docuents: PCN4 Card Preparation
14、, Engineering Data Micro-Reproduction System; Microfiln Aperture and Tabulating Cards for Naval Ship Systems. Marking for Shipment and Storage. Fabrication Welding and Inspection; and Carting Inrpection and Repair for Machinery, Piping and Pressure Vessels in Ships of the United States Navy. Maintai
15、nability Program Requirements (for Systems and Equipments). Maintainability Demonstration. Definitions of Effectiveness. -liability Prediction. Schedule of Piping, Valves, Fittings, and Associated Piping Requirements for Reliability Program (For Systems and Equipments). System Safety Program for Sys
16、tems M17828 - Nut, Self-Locking, Hexagon, Rogular-Height, (Nonmetallic Insert) -17829 - Nut, Self-Locking, Hexagon-Regular Height, 250F, (Non-Metallic With Appropriate Test Methods. 250*F, Nickel-Copper Alloy. In8ert) Non-Corrosion Resistant Steel. WDBOOK MILITARY MIL-HDBU-472 - Maintainability Pred
17、iction. in connection with specific procurement functions should be obtained from the procuring activity or u dirmctad by the contracting officer.) the extent spei- Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. (Copiem of specific
18、ations, standards, drawings, and publications required by suppliers # 2.2 0- lications. The following documents form a part of this specification to AHBRICAN NATIONAL STANDARDS INSTITUTE, INC . (ANSI) 81.4-1971 - Sound Level Meters. 61.11-1971 - Octane, Xalf-Octane, and Third-Octane Band Filter Sets
19、. (Application or copies should be addressed to the Amarican National Standards Institute, Inc., 1430 Brodway, New York, N.Y. 10018.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) E-208-1969 - Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels. Matar
20、ials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) (Application for copies should be addressed to the American Society for Testing and 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-3087C (SHIPS) NATIONAL BUREAU OP ST-S Handbook H28
21、- dy -ration at the static shock factor values applied separately in each direction (plus or minus). Each mass element of the unit shall have an inertia load applied equal to (dm times G times g) where dm = distributed mass. 3.2.12.2.1.1 Use of static shock factor values. The equipment shall be capa
22、ble of G = static shock factor value tabulated herein g = acceleration of gravity The resulting stresses and deflections, when added to the maximum normal operating values, shall not exceed allowable stresses or deflections. shall not exceed the 0.2 percent offset yield strength at operating tempera
23、ture. The unit loading for combined shock and operating loads on babbitted bearings shall be limited to nible i8 the effective yield strength of the material, in tension and shear, which is 22,000 pounds per square inch (psi). The criteria for failure when plastic set is permis- repre8enked by “6 an
24、d “y respectively, defined as follows: 3.2.12.2.1.2 Allowable stresses. The combination of shock and operating stresses 6- 6y + F (6u -6y);?= 0.66 Where: 6 y is the 0.2 percent offset yield, elastic limit or other normal 6u is the normal definition of material failure strength. F is a factor which t
25、akes into account the efficiency with which the material in the member is utilized and is dependent on the kind of definition of material yield strength. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-loading and crosm section of the member. The v
26、alue of ? is equal to the load required to completely yield the P.1.b.r divided equals zero for nmmbers in tension and where material has less by that load required to just initiate yielding minus 1. F F equals 0.5 for a rectangular soction in pure bending. than 10 percent elongation before fracture
27、 in a tension test. I 3.2.12.2.2 D namic design method. When specified (8ee 6.1.11, the manufacturer shall conduct a concurrbamrc ana- Items found deficient by this analysis shall be identified and corrective action proposed by the manufacturer. Design changes will b. incorporated at the option of t
28、he Government. Accordingly, unless otherwise specified (see 6.1.1) the incorporation of these design chanqes in equipment in not the responsibility of the manufacturer. I 3.2.12.3 General. I 3.2.12.3.1 Where carbon steels with less than 1 percent of any one alloy ia used in the generator set bedplat
29、e Or subbase and in unit mounting feet or mounting brackets, bearing caps, bearing pedestals and frames and for the items covered by the noto regarding nil-ductility transition temperature under the materials table of ML-T-24398, nil-ductility transition tuPp.ratures shall not excoed plus 10.F as de
30、terminad by tho method descrikd m ASTM E208-69. This requirunent does not apply to plate thickness less than 518 inch or mre than 4 inches. Subject to the acceptance of the command or agency concerned, the use of impact tests may be substituted where there is sufficient rtatistical data to rhw corre
31、la- tion between nil-ductility properties and impact values. # 3.2.12.3.2 The generator set bedplate bolt holes provided for securing th. generator be designed for u8e with nonfitted bolts conforming to types I, II, or III, grade 5, OS set and mounting holes provided for securing detached units to t
32、he ships foundation shall MIL-B-857 and self-locking nut8 conforming to MS17828 or MS17829. Bolts of higtmr grado are permitted. When their use is accepted by the procuring activity, where such bolts are needed, the generator set manufacturer shall forward data to the procuring activity to justify t
33、he use of such bolts along with the requeat for acceptance. Maximm clearance between bolt-holes and bolts shall not exceed the following: Nominal bolt diameter Haximum diamter of hol. 3/4 inch or smaller Larger than 3/4 inch Nainal bolt dianeter plum 1/32 inch Nominal bolt diameter plum 1/16 inch #
34、3.2.12.3.3 Units that are rigidly supported shall not be attached to two structures which can deflect relative to each other under shock. I 3.2.12.3.4 Shock mountings to minimize shock forces imparted to equipment shall not be used. # 3.2.12.4 Exce tions. The basis for shock design 8pecified in 3.2.
35、12 through 3.2.12.3.4 applies except blowing cases: When the equipment proposed is of identical design to one which ham been previously shock tested and finally accepted by the Navy, such design shall be acceptable provided it meets all other rcquirumnts of the application. previously statically ana
36、lyzed in accordance wtih the requiremontm herein or dynamically analyzed and such analysis has ken finally acapted by the Navy, such design shall be acceptable provided: (1) The mathematical model applies without change. For example, th. equip- When the equipment proposed is of identical design to o
37、ne which has been ment is a repeat procurement for which the ships foundation and other (2) The equipment mets all other requirements of the application. equipment affecting the modal are dynamically the same. When the equipment proposed is similar, but not identical, tQ a design ptevioualy shock te
38、sted or statically or dynamically analyzed and accepted by the Navy, including calculated shock factor capability in theso areas, and propose to the Navy the acceptance of such design in lieu of meting that the similar design will provide equal or better shock capabilitiem the requirement in 3.2.12.
39、1 or 3.2.12.2.2. If NAVSBIPS/NAVSEC concurs in the intended application, extension of acceptance will ba given. Requests for extension based on unit designs previously extanded will not be con- sidered. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
40、-,-(dl Previously gra MIL-G-3087C (SHIPS lnted exceptions to shock test which are based on static or wcright being ln excess of the capacity of former shock test machines are dynamic -id be titled “Symptom“; the second column shall be titled “Probable cause , and the third column shall be titled “Re
41、medy“. All items under the “Remedy“ column which involve checks, refer to the section and paragraph in the manual where detail procedures inspections, repairs, replacement of parts, cleaning and adjustments shall for accomplishing these items may be found. Where the “Remedy“ column for electrical it
42、ems involves checking voltages, wave forms and current in circuits, information shall be added to identify the specific points in the circuit where measurements are made by appropriate reference to drawings included in the manual. As a minimum, the trouble-shooting table shall show probable causes a
43、nd remedies for the following symptoms. (1) Loss of lubricating oil pressure. (2) Bearing temperatures abnormally high. (3) Vibration abnormally hlqh. (4) Frequency varies with constant load. (5) Recovery of frequency abnormally slow after sudden application or removal of load. (6) Low lube oil pres
44、sure. 21 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Lar control oil pressure. High lube oil pressure. High control oil pressure. Gonerator sets will not share kW load during parallel operation. Generator sets will not share reactive load during
45、parallel operation. Turbine trips off line inadvertently when operating personnel do not Turbine fails to trip when tripping device operated by personnel. Steam chest linkage operation sluggish. Low vacuum or fluctuating vacuum. Excessive condensate depression. High salinity for condenser condensate
46、. High circulating water temperature at dircharge end of condenrer. High temperature on steam side of condenser. Low generator insulation reristance. Generator brushes chattering. Excessive sparking between generator brushes and slip rings or commutator. Generator voltage will not build-up. Where fi
47、eld flashing of generator is involved. a. Generator field cannot be flashed. b. Generator voltage drops to zero when flashing power is removed (regulator control switch in manual and automatic positions). Generator voltage goes to ceiling (turning regulator control switch Generator voltage goes to c
48、eiling (turning regulator control switch to Low generator voltage (below rated voltage) with little or no control. Poor voltage regulation under constant load conditions (voltage does not remain with required band limits at all loads between no load and rated value). initiate action to trip unit off
49、 the line. to manual or automatic has no effect). manual results in correct operation). High generator voltage (wer rated voltage) with limited control. (30) Liit f special tool and all instruments required for trouble-shooting, (b) Section 2 - This section shall contain a detail description of trouble-shooting procedures which are too lengthy to include in the trouble-shooting chart required under section 1 and where such procedures are not shown in other chapters of the manual.
