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Nes 362

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Ministry of Defence
Defence Standard 02-362 (NES 362)
Issue 1 Publication Date 01 April 2000
Incorporating NES 362 Categor...

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AMENDMENT RECORD
Amd No Date Text Affected Signature and Date
REVISION NOTE
This standard is raised to Issue 1 to update i...

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Ministry of Defence
Naval Engineering Standard
NES 362 Issue 3 (Reformatted) May 1988
TYPE AND PRODUCTION TESTING OF MECHA...

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Nes 362

  1. 1. Ministry of Defence Defence Standard 02-362 (NES 362) Issue 1 Publication Date 01 April 2000 Incorporating NES 362 Category 3 Issue 3 Publication Date May 1988 Type And Production Testing Of Mechanical Equipment
  2. 2. AMENDMENT RECORD Amd No Date Text Affected Signature and Date REVISION NOTE This standard is raised to Issue 1 to update its content. HISTORICAL RECORD This standard supersedes the following: Naval Engineering Standard (NES) 362 Issue 3 dated May 1988.
  3. 3. Ministry of Defence Naval Engineering Standard NES 362 Issue 3 (Reformatted) May 1988 TYPE AND PRODUCTION TESTING OF MECHANICAL EQUIPMENT
  4. 4. This NES Supersedes NES 362 ISSUE 2 Record of Amendments AMDT INSERTED BY DATE 1 2 3 4 5 6 7 8 9 10
  5. 5. i NAVAL ENGINEERING STANDARD 362 ISSUE 3 (REFORMATTED) TYPE AND PRODUCTION TESTING OF MECHANICAL EQUIPMENT The issue and use of this Standard is authorized for use in MOD contracts by MOD(PE) Sea Systems and the Naval Support Command ECROWN COPYRIGHT Published by: Director of Naval Architecture Procurement Executive, Ministry of Defence Foxhill, Bath BA1 5AB
  6. 6. ii
  7. 7. NES 362 Issue 3 (Reformatted) iii SCOPE 1. This NES applies to the testing of mechanical equipment prior to installation.
  8. 8. NES 362 Issue 3 (Reformatted) iv
  9. 9. NES 362 Issue 3 (Reformatted) v FOREWORD Sponsorship 1. This Naval Engineering Standard (NES) is sponsored by the Procurement Executive, Ministry of Defence, Deputy Controller Warship Equipment (DCWE), Section ME 241. 2. It is to be applied as required by any Procurement Executive, Ministry of Defence contract for the testing of nominated equipment before installation and is applicable to Ship Systems and Equipment. 3. If it is found to be technically unsuitable for any particular requirement the Sponsor is to be informed in writing of the circumstances. 4. Any user of this NES either within MOD or in outside industry may propose an amendment to it. Proposals for amendments which are: a. not directly applicable to a particular contract are to be made to the Sponsor of the NES b. directly applicable to a particular contract are to be dealt with using existing procedures or as specified in the contract. 5. No alteration is to be made to this NES except by the issue of a formal amendment. 6. Unless otherwise stated reference in this NES to approval, approved, authorized or similar terms, means by the Procurement Executive, Ministry of Defence. 7. Any significant amendments that may be made to this NES at a later date will be indicated by a vertical sideline. Deletions will be indicated by 000 appearing at the end of the line interval. 8. This NES has been reissued primarily to include changes to departmental nomenclature consequent upon the reorganization of the Controllerate, particularly with regard to eliminating references to DG Ships, DGW(N), etc. Conditions of Release General 9. This Naval Engineering Standard (NES) has been prepared for the use of the Crown and of its contractors in the execution of contracts for the Crown. The Crown hereby excludes all liability (other than liability for death or personal injury) whatsoever and howsoever arising (including but without limitation, negligence on the part of the Crown, its servants or agents) for any loss or damage however caused where the NES is used for any other purpose. 10. This document is Crown Copyright and the information herein may be subject to Crown or third party rights. It is not to be released, reproduced or published without written permission of the MOD. 11. The Crown reserves the right to amend or modify the contents of this NES without consulting or informing any holder. MOD Tender or Contract Process 12. This NES is the property of the Crown and unless otherwise authorized in writing by the MOD must be returned on completion of the contract, or submission of the tender, in connection with which it is issued.
  10. 10. NES 362 Issue 3 (Reformatted) vi 13. When this NES is used in connection with a MOD tender or contract, the user is to ensure that he is in possession of the appropriate version of each document, including related documents, relevant to each particular tender or contract. Enquiries in this connection may be made of the local MOD(PE) Quality Assurance Representative or the Authority named in the tender or contract. 14. When NES are incorporated into MOD contracts, users are responsible for their correct application and for complying with contracts and any other statutory requirements. Compliance with an NES does not of itself confer immunity from legal obligations. Related Documents 15. In the tender and procurement processes the related documents listed in each section and Annex A can be obtained as follows: a. British Standards British Standards Institution, 389 Chiswick High Road, London W4 4AL b. Defence Standards Directorate of Standardization and Safety Policy, Stan 1, Kentigern House, 65 Brown Street, Glasgow G2 8EX c. Naval Engineering Standards CSE3a, CSE Llangennech, Llanelli, Dyfed SA14 8YP d. Other documents Tender or Contract Sponsor to advise. Note: Tender or Contract Sponsor can advise in cases of difficulty. 16. All applications to Ministry Establishments for related documents are to quote the relevant MOD Invitation to Tender or Contract Number and date, together with the sponsoring Directorate and the Tender or Contract Sponsor. 17. Prime Contractors are responsible for supplying their subcontractors with relevant documentation, including specifications, standards and drawings. Health and Safety Warning 18. This NES may call for the use of processes, substances and/or procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and in no way absolves either the supplier or the user from statutory obligations relating to health and safety at any stage of manufacture or use. Where attention is drawn to hazards, those quoted may not necessarily be exhaustive.
  11. 11. NES 362 Issue 3 (Reformatted) vii CONTENTS Page No TITLE PAGE i. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SCOPE iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FOREWORD v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sponsorship v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conditions of Release v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MOD Tender or Contract Process v. . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Health and Safety vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Warning vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONTENTS vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 1. GENERAL REQUIREMENTS 1.1. . . . . . . . . . . . . . . . . 1.1 Site of Tests 1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Test Facilities 1.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 2. TYPE TESTS 2.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Instructions for Type Tests 2.1. . . . . . . . . . . . . . . . . . . . . 2.2 Proposals for Type Test Programme 2.2. . . . . . . . . . . . . 2.3 Details of Type Tests and Examinations 2.3. . . . . . . . . . 2.4 Results of Type Tests 2.6. . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 3. PRODUCTION TESTS 3.1. . . . . . . . . . . . . . . . . . . . . . . 3.1 Instructions for Production Tests 3.1. . . . . . . . . . . . . . . 3.2 Details of Production Tests and Examinations 3.1. . . . 3.3 Results of Production Tests (Presentation) 3.1. . . . . . . . SECTION 4. ANCILLARY DRIVES FOR AUXILIARY EQUIPMENT 4.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ANNEX A. RELATED DOCUMENTS A.1. . . . . . . . . . . . . . . . . . . . ANNEX B. DEFINITIONS B.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ANNEX C. PROCUREMENT CHECK LIST C.1. . . . . . . . . . . . . . . ALPHABETICAL INDEX
  12. 12. NES 362 Issue 3 (Reformatted) viii
  13. 13. NES 362 Issue 3 (Reformatted) 1.1 1. GENERAL REQUIREMENTS a. Detailed requirements for Type and Production testing are given in Sections 2. and 3. respectively. 1.1 Site of Tests a. Each equipment is to be tested at the works of the equipment manufacturer or elsewhere as approved. 1.2 Test Facilities a. Machinery supports and holding down arrangements are to simulate as closely as possible those for onboard installation, unless otherwise approved. b. Lubrication of equipment during tests is to be similar to the installed onboard arrangements. c. The test rig is to simulate the associated system so that all functions are subject to operational conditions unless otherwise approved. d. Ancillary equipment, eg starter and cut-out switches, is to be the same as that used in service when available. Where not available slave equipment may be used. e. Services to be provided by the contractor or test establishment are to include electricity, water, drainage and air supplies. f. Consumable materials can be obtained from Naval Stores and may include fuel, oil and refrigerant. g. When fuel has been supplied from other than MOD sources, a sample is to be sent to the Superintendent, Naval Petroleum Chemistry and Technology Division, Royal Aircraft Establishment, Fairmile, Cobham, Surrey KT11 1B5 for determination of the calorific value. h. Instrumentation is to be fitted to record each parameter including quantity of flow, temperatures and pressures, and these are to be measured at each point where there is significant variation. Additionally the speed (and torque where appropriate) are to be measured and recorded from any output shaft. i. The instrumentation is to be of sufficient accuracy to enable significant variations to be noted. This is to include a high degree of sensitivity and a rapid response to fluctuations. A sensitivity of 1% of the maximum scale value throughout the anticipated range is the minimum acceptable recording level. j. All instruments are to be calibrated prior to the type test and selected instruments calibrated after the test. Instruments used for Production Testing are to be calibrated periodically in accordance with AQAP−6. k. Safety precautions are to be in accordance with current requirements. Note: In general with test facilities, it is also advisable that an equipment is tested in conjunction with the specific item(s) with which it will be associated on the ship whenever the performance of the associated units is likely to affect the primary equipment. For example, experience has shown that it is essential that prototype tests on auxiliary boilers are carried out using the distilling plant appropriate to the ship fit.
  14. 14. NES 362 Issue 3 (Reformatted) 1.2
  15. 15. NES 362 Issue 3 (Reformatted) 2.1 2. TYPE TESTS 2.1 Instructions for Type Tests a. Type Tests are carried out on equipment: (1) as part of a Development Contract (2) which already has a Configuration Definition but requires testing to validate its performance in a ships environment prior to installation or for inclusion on a preferred equipment list. b. Noise and Vibration tests are covered in DGS 10008, DGS 10009 and BR 3028 with relevant levels for submarines given in DPT Specifications 222, 225 and 226. c. The aim of the Type Test is to: (1) demonstrate that the equipment is suitable for its intended service and that it is able to perform its specified functions. (2) establish the limiting performance characteristics of the equipment. (3) establish significant performance figures for checking production tests on later equipment. d. The Type Test programme is to be completed on one equipment, with the exception of Noise and Vibration tests which are covered in DGS 10008, DGS 10009, BR 3028 and for submarines DPT Specifications 222, 225 and 226. e. MOD(PE) will issue a list of the tests which are to be included in the type test. The list can include those tests given in Details of Type Tests and Examinations below. Testing part of an equipment which has been type tested previously isnot required, provided that the limiting performance characteristics of the part are not exceeded. f. The equipment maker is to prepare proposals in conjunction with associated machinery contractors for the Type Test Programmes below. The Procurement Specification is to state the dates by which: (1) The type test programme proposals are required. (2) The tests are to be commenced. (3) The tests are to be completed. (4) The equipment is to be delivered. g. The completion date is to allow time, before the equipment delivery date, for examination of the test results and for possible modification and consequent re-testing which MOD(PE) might require. h. The contractor is to: (1) provide MOD(PE) with a list showing: (a) Name of the Manufacturer of each equipment. (b) Date of despatch of each list of tests to the equipment manufacturer. (c) Date nominated for receipt of type test programme proposals.
  16. 16. NES 362 Issue 3 (Reformatted) 2.2 (d) Date nominated for completion of tests. (e) Date nominated for delivery of equipment. (2) ensure that the tests are carried out in accordance with the type test programme. (3) inform MOD(PE) of progress of the type test. (4) certify that the tests have been completed. 2.2 Proposals for Type Test Programme a. The Type Test programme proposals are to include the following information: (1) Name of equipment to be type tested. (2) Dates of commencement and completion of the type test. (3) Despatch date of equipment. (4) Place of test. (5) Name and telephone number of person responsible for test. (6) Itemized list of tests and duration of each. (7) Specified duties. (8) Estimates of performance. (9) Details of holding down arrangements. (10) Details of each itemized test including measurements to be taken and recorded. (11) A sketch of the test rig showing the points at which measurements are to be taken. (12) Position of rig in controlled environment tests. (13) Details of measuring equipment and standard of accuracy. (14) Methods of ensuring that fluids used conform to specification, together with details of oils and greases which will be used. b. In formulating proposals, manufacturers are to combine as many test requirements as practicable to minimize the total number of separate tests. c. The equipment manufacturer is to forward hiscompleted programme proposals in duplicate to MOD(PE). Particular attention is to be drawn to any proposal to deviate from the requirements of this NES. d. The MOD(PE) will ensure that the proposals are suitable and fully meet specified requirements. MOD(PE) will inform the equipment maker of any amendments to the test programme and instruct him to proceed with testing.
  17. 17. NES 362 Issue 3 (Reformatted) 2.3 2.3 Details of Type Tests and Examinations a. The following may be included by MOD(PE) in the list of tests comprising the type test. For further details of each, see subsequent clauses. (1) Physical data. (2) Operation of turning gear. (3) Safety tests. (4) Control equipment and governor operational tests. (5) Overspeed tests. (6) Performance characteristic tests. (7) Cooling tests. (8) Noise, vibration (self-induced and environmental) and shock tests. (9) Manoeuvring tests. (10) Air pressure tests. (11) Submerged tests. (12) Special ambient tests. (13) Inclined tests. (14) Endurance tests. (15) Hydraulic pressure tests. (16) Examination for wear. (17) Assessment of work content of scheduled maintenance operations. b. Physical data: (1) Assembled weight of equipment dry. (2) Assembled weight of equipment with fluids at normal working levels. (3) Weights of individual items of equipment. (4) Weight of spare gear including separate weights of individual items of equipment and sub-assemblies. Each component weighed is to be precisely identified by drawing number and part number or by NATO Stock Number (NSN) if known. Attention is to be drawn to any additions to or omissions from the components weighed. (5) Determination of centre of gravity, radius of gyration etc when (1)−(4) are known. Drawings and records are to be adjusted accordingly. (6) Minimum space required around the equipment for maintenance, repair and removal activities.
  18. 18. NES 362 Issue 3 (Reformatted) 2.4 c. Before equipment is type tested a record is to be made by direct measurement of the dimensions of wearing parts and clearances, unless these dimensions are available from the manufacturing records of the equipment. See ‘Examinations for Wear’, Clause 2.3n. d. All protective devices are to be tested to establish satisfactory operation. Tests to establish actuation speeds, pressures and temperatures are to be repeated not less than 5 times and each result recorded. Where appropriate, rapid variations of speed or pressure are to be imposed to establish the time response of the system. (1) Relief valve: test to establish the pressures at which the relief valve lifts, is fully open and reseats, also establish the flow when fully open and confirm that the valve is tight at design working pressure before lifting and after reseating, and establish accumulation pressure. (2) Overspeed emergency trip of rotating machinery: (a) demonstrate that trip operates within the following limits: Diesel engines Approved trip speed +0, −2½% Other units both electrical and mechanical Approved trip speed +2½%, −2½% (b) demonstrate hand operation and resetting of trip. (3) Lubricating oil failure emergency trip: demonstrate actuation of the trip at the pre-set pressure and record pressure. (4) High temperature emergency trip: demonstrate actuation of the trip at the pre-set temperature and record temperature. Note: Turbo-generators and main turbines as fitted in submarines have a vacuum trip arrangement. e. Control equipment and governor operational tests: each control device is to be tested to establish satisfactory operation over the full range of control. It is to be demonstrated that the control device can cope with the most severe single or cyclic signal variation that is specified. f. Overspeed tests: (1) Diesel and Petrol Engines On completion of the performance tests, the overspeed trip is to be rendered inoperative and the engine run for a period of 15 minutes at a speed which is either 20% in excess of its nominal full speed or is 5% of nominal speed greater than the overspeed trip setting, the greater of these two being used. If these requirements are not permissible the actual overspeed percentage is to be agreed with the engine manufacturer depending on application. The engine is to be run on no-load and the speed at which this test is run is to be recorded. The overspeed trip is to be reset and retested after this overspeed test is completed. Note: It can be detrimental to run a diesel in an overspeed condition for a prolonged period. DEF STAN 07−55 or the relevant NES provide guides to acceptable vibration limits.
  19. 19. NES 362 Issue 3 (Reformatted) 2.5 (2) Gas Turbines For each gas turbine driven auxiliary the output turbine disconnected from the dynamometer or auxiliary, is to be run at not less than 15% in excess of the maximum continuous speed or 5% above the approved overspeed emergency trip speed, whichever is the greater, for not less than 10 minutes continuously. Where engines have a separate gas generator line the gas generator is to be run at not less than 10% in excess of the gas generator speed corresponding with the maximum specified duty for not less than 10 minutes continuously. Notes: 1. It may be neither practical nor permissible to run the gas turbine driven auxiliary at these speeds and the actual permitted percentage overspeed to be used for this test is to be agreed with the turbine or auxiliary manufacturer. 2. Turbo feed-pumps, turbo generators and main turbines, as fitted in submarines, have emergency overspeed trip arrangements. g. Performance characteristic tests: each equipment is to be tested to establish its consumption and output over the full range of operating conditions, including the performance characteristics defined inthe instructions issued by MOD(PE). During performance testing, if it is found necessary to adjust control and safety devices, the tests specified for these are to be repeated under appropriately revised conditions. h. Noise vibration and shock tests: to conform to NES 811, NES 2020−2028, DGS 591, DGS 10008, DGS 10009 and BR 3021 and 3028. i. Air pressure tests: the airbell enclosure of an equipment which is required to be tested when submerged is to be subjected to an internal air pressure prior to submergence. The air pressure is to be equivalent to the depth of submergence and it is to be demonstrated by means of a sensitive gauge or manometer that no leakage will occur during a minimum period of one hour. Suitable closure plates are to be manufactured and used as required. j. Submerged tests: when an equipment is to be capable of operation under submerged conditions, tests are to demonstrate its capability to meet the requirements. See also NES 1004. k. Ambient tests: when an equipment is to operate under ambient conditions, tests are to demonstrate its capability to meet the requirements. See also NES 1004. l. Inclined tests: tests are to demonstrate the capability of the equipment to start, stop and operate when inclined over the full range of output. Tests are normally to be conducted at the inclination (or inclinations) in that direction which imposes the most severe operating conditions. The length of test will be stated in the procurement specification relevant to the equipment. See also NES 1004.
  20. 20. NES 362 Issue 3 (Reformatted) 2.6 m. Endurance tests: the equipment is to be run for a period, including all other test running, of not less than 100 hours or more than 1000 hours, but the MOD may choose to extend their period if considered necessary. The running time will be determined having regard to experience of similar equipment, operational requirements of the equipment and test facilities available. The total running time is to be completed without mechanical defect or undue wear. During this test a record is to be made of consumption of lubricating oil and fuel oil if appropriate. The balance of time required to complete the endurance trial, after completion of earlier type testing, is to comprise a series of operation cycles, each one to simulate that likely to be met in service and to include where applicable: (1) Starting. (2) Stopping. (3) Idling or minimum power for a defined time. (4) Full Power. (5) Rapid increases of power. (6) Rapid reductions of power. (7) Reversals of direction of rotation. (8) Astern power. (9) Operation at fractions of power ahead. (10) Operation at fractions of power astern. n. Examination for wear: on completion of type test the equipment isto be stripped and examined. All critical dimensions are to be recorded and divergence from the original noted. Any wear observed is to be described and recorded and photographic records of unusual wear or defects are to be provided. MOD(PE) will advise when any particular examinations are required. Every equipment embodying a rotor with fitted blades is to be opened up for examination of the blading after completion of the overspeed test. After refurbishing the equipment is to be subjected to production tests. o. Assessment of Work Content of Scheduled Maintenance Operations: facilities may be required for MOD(PE) representatives to witness, during or after type tests, some or all of the scheduled maintenance operations to assess their work content. Obstructions to simulate space limitations around the machine in the ship are to be provided. 2.4 Results of Type Tests a. The equipment manufacturer is to prepare four copies of the type test results in a form agreed by MOD(PE). The report is to include the following information: (1) Date of report. (2) Date of tests. (3) Description of equipment including unique identification number of the equipment and drive motor.
  21. 21. NES 362 Issue 3 (Reformatted) 2.7 (4) Comparison of estimated and actual weights. (5) A statement of specified duties and requirements of the equipment. (6) A sketch and brief description of the test rig actually used if different from Clause 2.2.a.(10) and (11). Description of each test procedure and its duration. The date and results of calibration tests of all instruments and the degree of accuracy of measurements recorded. (7) Tabular statement of test results and the provision of curves where graphical presentation can assist in the interpretation. (8) Tabular statement of critical dimensions and clearances before and after type testing together with a description of the condition of the equipment on completion of tests. (9) A statement that the equipment has been found to comply with requirements. Where the equipment does not fully comply, a statement that it has complied apart from the exceptions described. (10) An indication of any deficiencies in operation arising out of the type testing programme and suggested modifications which would improve design and performance, whether or not such deficiencies are within the scope of the specification or test requirements. These deficiencies and suggestions are to be noted in the report. (11) The modification state of the equipment during the type test. (12) Certification by the maker that the test has been conducted in accordance with the type test requirements. (13) Type test results are to include tolerances for acceptable standards for later production tests. b. Draft copies of the reports are to be sent to MOD who will either issue instructions for necessary modifications or for further testing, or will indicate acceptance of the equipment. Completed test reports are then to be indexed, bound and forwarded to MOD.
  22. 22. NES 362 Issue 3 (Reformatted) 2.8
  23. 23. NES 362 Issue 3 (Reformatted) 3.1 3. PRODUCTION TESTS 3.1 Instructions for Production Tests a. Each equipment completed subsequent to the type tested equipment, including any equipment supplied as spare gear, is to be production tested. Items of sub-assemblies, eg circulating water pumps and control equipment, are to be tested prior to fitting to the equipment. b. The aim of the Production Tests is to confirm that the performance of each equipment conforms to results established by the Type Tests. c. MOD(PE) or MOD(PE) contractor is to be kept informed of the progress of the tests. d. MOD(PE) will issue a list of tests which are to be included in the production test for each equipment. This list is to be forwarded to the equipment manufacturer at the time of order. e. For the benefit of firms not experienced in production testing, a series of typical production test programmes and of completed production test reports are held by MOD(PE) and will be made available. f. The equipment manufacturer is to prepare proposals for the programme and conduct of the production test and submit them to MOD(PE). They are to conform with Clause 2.2. 3.2 Details of Production Tests and Examinations a. The following tests may be included in the Production Test as applicable: (1) Operation of turning gear. (2) Safety tests, see also below. (3) Control and Governor tests. (4) Overspeed tests. (5) Performance tests. (6) Noise and vibration tests. (7) Air pressure tests. b. Where an equipment contains no moving parts, the requirements for the production test will be met by normal pressure testing and visual, sonic or X-ray examination as may be considered appropriate. c. Safety tests are to be conducted as required for the type test excepting that the time response of the system need not be established and relief valve flow need not be measured. d. Each equipment is to be tested to establish sufficient points, including maximum duty points on its characteristic curves to demonstrate that its consumption and performance correspond with the type tested equipment.
  24. 24. NES 362 Issue 3 (Reformatted) 3.2 e. Examination on completion of tests: (1) After completion of satisfactory production tests, the machinery unit is not to be opened up or otherwise disturbed in any way which will invalidate any tests or checks previously undertaken. A limited opening up is permitted for drying out, packaging or guarantee purposes, but the requirements of the preceding sentence are paramount. (2) Every equipment embodying a rotor with fitted blades is to be opened up for examination of the blading after completion of the overspeed test. 3.3 Results of Production Tests (Presentation) a. Results of tests in tabular and graphical form are to be provided to MOD and are to give the date of the report and the date of the tests.
  25. 25. NES 362 Issue 3 (Reformatted) 4.1 4. ANCILLARY DRIVES FOR AUXILIARY EQUIPMENT a. Ancillary drives for auxiliary equipment will, if fitted, be driven from take-off points on the prime equipment, to be loaded to not less than 60% of the full load condition of the auxiliary equipment during both type and production testing.
  26. 26. NES 362 Issue 3 (Reformatted) 4.2
  27. 27. NES 362 Issue 3 (Reformatted) A.1 ANNEX A. ANNEX A. RELATED DOCUMENTS A.1 Reference is made to: Referred to in Clause DEF STAN 07−55 Environmental Testing of Service Material 2.3f. AQAP−6 NATO Measurement and Calibration System Requirements for Industry 1.2j. NES 811 Submarine Noise Reduction 2.3h. NES 1004 Requirement for the Design and Testing of Equipment to meet environmental conditions 2.3j., 2.3k., 2.3l. NES 2020 to 2028 Specification for Resilient Mounts 2.3h. BR 3021 Shock Manual, Metric 2.3h. BR 3028 Vibration Levels for Auxiliary Machinery 2.1b., 2.1d., 2.3h. DGS 591 Pt 1 (*NES 810) Noise Reduction Handbook — Surface Ships 2.3h. DGS 10009 (*NES 813) Self Generated Noise and Vibration of Auxiliary Machinery—Production and Refit Tests 2.1b., 2.1d., 2.3h. DGS 10009 (*NES 813) Noise and Vibration—Type Tests 2.1b., 2.1d., 2.3h. DPT 22 (*NES 832) SSN01−06, SSBN01−04 and SS(O & P) Class Submarine Machinery Levels of Vibration 2.1b., 2.1d., 2.3h. DPT 225 (*NES 832) SSN07 and Class Nuclear Submarine Machinery Levels of Vibration 2.1b., 2.1d. DPT 226 (*NES 832) SSN13 and Class Nuclear Submarine Machinery Levels of Vibration 2.1b., 2.1d. * In course of preparation. When published will supersede stated document.
  28. 28. NES 362 Issue 3 (Reformatted) A.2ANNEX A.
  29. 29. NES 362 Issue 3 (Reformatted) B.1 ANNEX B. ANNEX B. DEFINITIONS B.1 For the purpose of this NES the following definitions apply: Component a single part which on its own does not fulfil a function. Sub-assembly two or more components fitted together. Equipment a combination of sub-assemblies or components fitted together to perform a specific function within defined parameters.
  30. 30. NES 362 Issue 3 (Reformatted) B.2ANNEX B.
  31. 31. NES 362 Issue 3 (Reformatted) C.1 ANNEX C. ANNEX C. PROCUREMENT CHECK LIST CHECK LIST TITLE ..................... REFERENCE ..................... Notes: 1. This Check List is to ensure that certain aspects of this Naval Engineering Standard are consulted when preparing a statement for a particular application. 2. Clauses where a preference for an option is to be used or where specific data is to be added are included in the Check List. 3. Each item is to be marked either:  = included NA = not applicable CHECK No CHECK CLAUSE No  or NA 1 If there are specialized test requirements. 2 That the tests to be included in the Type Test are included. 2.1e. 3 That the dates required are stated. 2.1f., 2.2, 3.1f. 4 That performance characteristics are defined. 2.3g. 5 That the duration of test is stated in the Unit Procurement Specification. 2.3m. 6 That any examination requirements are stated. 2.3n., 3.2e. 7 That the production tests are listed. 3.2, 3.2d.
  32. 32. NES 362 Issue 3 (Reformatted) C.2ANNEX C.
  33. 33. NES 362 Issue 3 (Reformatted) INDEXINDEX.1 ALPHABETICAL INDEX A Air pressure, 2.5 Ambient, 2.5 Ancillary drives for auxiliary equipment, 4.1 Ancillary equipment, 1.1 C Consumable materials, 1.1 Contractors’ services, 1.1 Control equipment, 2.4 E Emergency trips, 2.3 Endurance, 2.5 Equipment, 1.1 Examination after production tests, 3.1 Examinations—type tests, 2.3 F Facilities, 1.1 Fuel samples, 1.1 I Inclined, 2.5 Instrumentation, 1.1 L Lubrication during tests, 1.1 M Machinery supports, 1.1 Measurements, 2.3 N Noise vibration and shock, 2.5 Non-moving equipment, 3.1
  34. 34. NES 362 Issue 3 (Reformatted) INDEX INDEX.2 O Overspeed, for diesel and petrol engines and gas turbine driven auxiliaries , 2.4 P Performance characteristics, 2.5 Physical data, 2.3 Pre-installation, 1.1 Production test instructions, 3.1 Programme, 2.2 Protective devices, 2.3 R Results of production tests—presentation, 3.2 Results of type tests—presentation, 2.6, 2.7 S Safety precautions, 1.1 Safety tests, 3.1 Submerged, 2.5 T Test rig, 1.1 Type test instructions, 2.1 W Wear examinations, 2.6 Work content assessment, 2.6
  35. 35. Inside Rear Cover
  36. 36. © Crown Copyright 2000 Copying Only as Agreed with DStan Defence Standards are Published by and Obtainable from: Defence Procurement Agency An Executive Agency of The Ministry of Defence Directorate of Standardization Kentigern House 65 Brown Street GLASGOW G2 8EX DStan Helpdesk Tel 0141 224 2531/2 Fax 0141 224 2503 Internet e-mail enquiries@dstan.mod.uk File Reference The DStan file reference relating to work on this standard is D/DStan/69/02/362. Contract Requirements When Defence Standards are incorporated into contracts users are responsible for their correct application and for complying with contractual and statutory requirements. Compliance with a Defence Standard does not in itself confer immunity from legal obligations. Revision of Defence Standards Defence Standards are revised as necessary by up issue or amendment. It is important that users of Defence Standards should ascertain that they are in possession of the latest issue or amendment. Information on all Defence Standards is contained in Def Stan 00-00 Standards for Defence Part 3 , Index of Standards for Defence Procurement Section 4 ‘Index of Defence Standards and Defence Specifications’ published annually and supplemented regularly by Standards in Defence News (SID News). Any person who, when making use of a Defence Standard encounters an inaccuracy or ambiguity is requested to notify the Directorate of Standardization (DStan) without delay in order that the matter may be investigated and appropriate action taken.

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