ISO 22108-2008 Space systems - Non-flight items in flight hardware - Identification and control《航空系统 飞行器中非飞行项目 识别和控制》.pdf

1、 Reference number ISO 22108:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 22108 First edition 2008-12-15 Space systems Non-flight items in flight hardware Identification and control Systmes spatiaux Articles non destins au vol sur matriel volant Identification et contrle ISO 22108:2008(E) PDF disclaime

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5、 DOCUMENT ISO 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member

6、 body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedISO 22108:2008(E) ISO 2008 All rights reserved iiiForeword ISO (t

7、he International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical commit

8、tee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotech

9、nical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member

10、 bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying

11、 any or all such patent rights. ISO 22108 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems and operations. ISO 22108:2008(E) iv ISO 2008 All rights reservedIntroduction It is essential that non-flight items which have been used for test, s

12、afety or as production aids are removed from flight hardware before flight, so that they do not interfere with mission performance. In order to achieve that requirement, positive identification of such non-flight items is needed. A log needs to be maintained of all critical non-flight items pertaini

13、ng to a stated piece of flight hardware. Each item needs to be identified by coloured streamers and covers as appropriate. Upon removal from the hardware, evidence of removal needs to be recorded for each item, e.g. by placing the item in a dedicated accountability box that is then photographed when

14、 full to demonstrate complete removal of all non-flight items from the hardware. This International Standard addresses the identification of non-flight items and the control measures required to ensure their removal before launch. Throughout this International Standard, the minimum essential criteri

15、a are identified by the use of the key word “shall”. Recommended criteria are identified by the use of the key word “should”, and while not mandatory, are considered to be of primary importance in providing serviceable, economical and practical procedures. Deviation from the recommended criteria is

16、acceptable only after careful consideration, extensive testing and thorough service evaluation have shown alternative methods to be satisfactory. INTERNATIONAL STANDARD ISO 22108:2008(E) ISO 2008 All rights reserved 1Space systems Non-flight items in flight hardware Identification and control 1 Scop

17、e This International Standard describes the identification of critical non-flight items in space flight hardware and the procedure to account for their complete removal prior to flight. This International Standard is used in context with project-specific quality requirements and procedures related t

18、o flight hardware and related activities prior to launch and at the launch site. Verification of removal of critical non-flight items is described in this International Standard. Removal of other non-flight items is outside the scope of this International Standard and is verified by relevant inspect

19、ion procedures. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 critical non-flight item item of non-flight equipment whose presence in or on launched flight hardware would severely jeopardise mission performance EXAMPLE Protective equipment

20、cover, safety device, locking pin, fastener, ground support interface equipment. 2.2 other non-flight item item of non-flight equipment that is not considered in the procedure described in this International Standard EXAMPLE Tape and connector caps that can be used to provide temporary protection. 3

21、 Control method 3.1 General The control of critical non-flight items shall consist as a minimum of three elements, as follows: a) log of critical non-flight items; b) visual identification of critical non-flight items; c) storage of critical non-flight items. ISO 22108:2008(E) 2 ISO 2008 All rights

22、reservedAppropriate procedures for handling non-flight items should be defined. In addition, good practice may involve using additional documentation, including the operation manual, and a data card for the products involved. Note that the log of critical non-flight items implies maintaining a full

23、list of all critical non-flight items, as well as a log recording the current status of each item. 3.2 Responsibilities A person or persons shall be identified as being responsible for each of the following tasks: a) ensuring that each critical non-flight item is identifiable as described in this In

24、ternational Standard; b) providing a complete list of critical non-flight items; c) creating the log of critical non-flight items; d) ensuring the log is maintained accurately; e) retaining the log and evidence of removal with an appropriate level of security; f) establishing a dedicated storage fac

25、ility for critical non-flight items. Suggested responsible bodies are indicated below. Non-flight items should be designed and manufactured with provisions for identification and to the correct colours. The organizations responsible for fitting the non-flight item should ensure that it is identified

26、 in accordance with this International Standard. The flight hardware design authority should produce a list of all critical non-flight items, identifying the requirements for major test phases and launch site activities. Using these lists, a delegated quality representative or other person should be

27、 responsible for the preparation of the critical non-flight item log, its subsequent signature endorsement when these items are removed, and for controlling access to the dedicated storage facility. The assigned technicians should be responsible for removal of the non-flight items, together with ass

28、ociated streamers/covers and their placement in the dedicated storage facility. At completion of each placement, the technician should sign the log against the relevant item(s). 3.3 Log of critical non-flight items The identities and serial numbers (where applicable) of all critical non-flight items

29、 shall be recorded in a non- flight items log when the item is attached or assembled to the flight hardware. NOTE An example of a non-flight items log is given in Annex B. Specific logs may be produced identifying the individual requirements for the following major activities: ISO 22108:2008(E) ISO

30、2008 All rights reserved 3 vibration testing; spin balancing; solar simulation; launch activities. Individual logs shall be maintained for each piece of hardware, as appropriate. These logs shall be compiled into a single flight hardware log, from which it can be ascertained that all non-flight item

31、s have been removed when the flight hardware is complete and ready for launch. When the critical non-flight item is removed from the flight hardware, the removal shall be recorded in the log. The removal should also be recorded in the products data card (when this is used) together with a list of pe

32、rsons responsible for this operation along with their signatures. 3.4 Visual identification Critical non-flight items fitted to flight hardware at assembly, integration and test (AIT) and subsequent stages (e.g. environmental test, fuel loading and installation of the flight hardware onto the launch

33、 vehicle) shall be clearly and visually identified. Identification may be by the attachment of streamers conforming to the requirement of 4.1, or where the use of streamers would cause a hazard themselves (e.g. mechanisms or optical sensors) coloured covers may be used. The method of identification

34、shall be recorded in the relevant critical non-flight items log book. Each streamer and cover shall be uniquely identified to simplify checks for missing items. 3.5 Storage of critical non-flight items All critical non-flight items removed from the flight equipment shall be placed in a dedicated sto

35、rage facility clearly identified as to its purpose. This facility shall provide appropriate and identified storage for all critical non-flight items and any special tools required for their installation or removal. It may also contain a configured item reference so the presence of all listed items c

36、an quickly be determined. Items too large for the dedicated storage facility (e.g. thruster covers or items of mechanical ground support equipment) shall be kept at a safe, controlled and identified location. All fixings for covers, etc. shall be fully accounted for and maintained with their respect

37、ive covers. Critical non-flight items placed in the dedicated storage facility, or otherwise kept securely, shall be kept for a period not less than the operational period of the equipment they were protecting if the operational manual does not explicitly state otherwise. 3.6 Removal of non-flight i

38、tems from flight hardware As each critical non-flight item is removed from the flight hardware (even temporarily), it shall be placed, together with the associated streamer or cover (as applicable) and associated special tools, in the dedicated storage facility. Items too large for this facility sha

39、ll be stored in an appropriate place, if possible, nearby. The critical non-flight item log shall be signed and dated by the technician removing the item and by the delegated quality representative. During removal, particular care should be taken to avoid damaging the flight equipment, and large met

40、al non-flight items (e.g. thruster covers) should be earthed up to the moment of their removal. Critical non-flight items that are repeatedly removed and replaced (e.g. test equipment) shall be reinstated in the log each time they are placed on the flight equipment such that the non-flight item log

41、reflects the current configuration of non-flight items on the flight equipment at all times. ISO 22108:2008(E) 4 ISO 2008 All rights reservedEvidence of removal and the log of critical non-flight items shall be retained until non-flight item removal for the item concerned is confirmed by mission per

42、formance verification or until the end of the mission. 3.7 Evidence of removal An appropriate method shall be used to provide lasting evidence that all critical non-flight items have been removed from the flight hardware and placed in their dedicated storage facility or location. Evidence may be in

43、the form of photographs. This evidence shall be attached to the log. 4 Materials and construction 4.1 Identification streamers/covers 4.1.1 General Some typical streamers are described in Annex A. Identification streamers and covers should conform to the requirements given in 4.1.2 to 4.1.4. The len

44、gth of the streamer should be selected to suit location of installation. While the attached streamer should be visible, the length should be kept as short as possible to avoid damage in the attachment area. 4.1.2 Materials All materials used in the construction of identification streamers/covers sha

45、ll be compatible with the environments to which they are likely to be exposed (e.g. high or low temperature, vacuum) and suitable for use in clean rooms and flight hardware assembly halls. Streamers and covers shall be of a material selected to prevent physical damage or contamination to personnel a

46、nd items of flight hardware. Attachment devices for streamers shall be made from a non-degradable material. 4.1.3 Colouring and identification Streamers should be coloured using a standard format to identify the non-flight items to which they pertain. Colours used for identification should draw atte

47、ntion to the streamer and cover. Colours such as those described in ISO 3864-1 and ISO 14625 may be used. Where this is the case, their meaning should be clearly stated on the relevant project documentation and drawings and the operations manual. Streamers may also be identified to further clarify t

48、heir purpose (e.g. “REMOVE BEFORE FLIGHT” or “REMOVE PIN BEFORE FLIGHT”). The wording on the streamer may be written in the language of the flight hardware manufacturer, but the manufacturer should take into account the language used at the launch site. Examples of the wording in several languages a

49、re presented in Table A.1. 4.1.4 Method of attachment Streamers shall be securely attached to the non-flight item, using appropriate attachment devices. In some instances, it may be appropriate to link a series of covers with fixing wire or lightweight line and identify them as a set with a suitable streamer. ISO 22108:2008(E) ISO 2008 All rights reserved 54.2 Storage facility The accountability box and trays should be constructed from materials that will not produce contamination in an area with a controlled environmen