1、BSI Standards PublicationBS EN 16602-70-22:2014Space product assurance Control of limited shelf-lifematerialsBS EN 16602-70-22:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16602-70-22:2014. It supersedes BS EN 14089:2002 which is withdrawn.The UK partici
2、pation in its preparation was entrusted to Technical Committee ACE/68, Space systems and operations.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are res
3、ponsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 84602 1 ICS 49.025.01; 49.140 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority o
4、f the Standards Policy and Strategy Committee on 30 November 2014.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 16602-70-22 October 2014 ICS 49.025.01; 49.140 Supersedes EN 14089:2002 English version Space product assurance - Contro
5、l of limited shelf-life materials Assurance produit des projets spatiaux - Contrle des quipements dure de vie limite sur tagre Raumfahrtproduktsicherung - Kontrolle von Materialien mitbegrenzter Lagerfhigkeit This European Standard was approved by CEN on 11 April 2014. CEN and CENELEC members are bo
6、und to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the
7、CEN-CENELEC Management Centre or to any CEN and CENELEC member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CE
8、NELEC Management Centre has the same status as the official versions.CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fr
9、ance, Germany, Greece,Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN/CENELEC Al
10、l rights of exploitation in any form and by any means reservedworldwide for CEN national Members and for CENELEC Members. Ref. No. EN 16602-70-22:2014 E BS EN 16602-70-22:2014Table of contents Foreword 3 1 Scope . 4 2 Normative references . 5 3 Terms, definitions and abbreviated terms 6 3.1 Terms de
11、fined in other standards . 6 3.2 Terms specific to the present standard . 6 3.3 Abbreviated terms. 6 4 Requirements 7 4.1 Control of material life . 7 4.1.1 Hazards, health and safety precautions 7 4.1.2 Material control . 7 4.1.3 Assessment of shelf-life 8 4.1.4 Extension of shelf-life (re-certific
12、ation). 9 4.1.5 Disposal of materials . 9 4.1.6 Acceptance criteria, re-certification testing 9 4.2 Quality assurance . 9 4.2.1 Data 9 4.2.2 Calibration . 10 Annex A (normative) Shelf-life material evaluation report - DRD . 11 Annex B (informative) Examples of properties to be measured . 12 Bibliogr
13、aphy . 13 EN 16602-70-22:2014 (E)BS EN 16602-70-22:2014Foreword This document (EN 16602-70-22:2014) has been prepared by Technical Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN. This standard (EN 16602-70-22:2014) originates from ECSS-Q-ST-70-22C. This European Standard sha
14、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2015, and conflicting national standards shall be withdrawn at the latest by April 2015. Attention is drawn to the possibility that some of the elements of this documen
15、t may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14089:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Associati
16、on. This document has been developed to cover specifically space systems and has therefore precedence over any EN covering the same scope but with a wider domain of applicability (e.g. : aerospace). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the follow
17、ing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, No
18、rway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 16602-70-22:2014 (E)BS EN 16602-70-22:20141 Scope Several classes of materials depend on a chemical reaction for their application and their final properties are sensitive to the exact
19、composition of the reactants. The final properties vary with the reactants age and storage condition. This Standard defines the requirements for the identification, handling, storage and control of limited shelf-life materials employed in the fabrication of spacecraft and associated equipment. This
20、standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00. EN 16602-70-22:2014 (E)BS EN 16602-70-22:20142 Normative references The following normative documents contain provisions which, through reference in this text, constitute prov
21、isions of this ECSS Standard. For dated references, subsequent amendments to, or revision of any of these publications do not apply, However, parties to agreements based on this ECSS Standard are encouraged to investigate the possibility of applying the more recent editions of the normative document
22、s indicated below. For undated references, the latest edition of the publication referred to applies. EN reference Reference in text Title EN 16601-00-01 ECSS-S-ST-00-01 ECSS system Glossary of terms EN 16602-10-09 ECSS-Q-ST-10-09 Space product assurance Nonconformance control system EN 16602-40 ECS
23、S-Q-ST-40 Space product assurance - Safety EN 16602-70 ECSS-Q-ST-70 Space product assurance - Materials, mechanical parts and processes EN 16602-70-22:2014 (E)BS EN 16602-70-22:20143 Terms, definitions and abbreviated terms 3.1 Terms defined in other standards For the purpose of this Standard, the t
24、erms and definitions from ECSS-S-ST-00-01 and ECSS-Q-ST-70 apply. 3.2 Terms specific to the present standard 3.2.1 batch quantity produced at one operation NOTE One batch can be subdivided into several lots. 3.2.2 shelf-life period of time during which a material can be processed to produce final pr
25、operties with consistently stable parameters 3.3 Abbreviated terms For the purpose of this Standard, the abbreviated terms from ECSS-S-ST-00-01 and the following apply: Abbreviation Meaning RH relative humidity EN 16602-70-22:2014 (E)BS EN 16602-70-22:20144 Requirements 4.1 Control of material life
26、4.1.1 Hazards, health and safety precautions a. Materials and parts with hazardous characteristics shall be identified and manage in conformance with the “Safety programme plan” specified in ECSS-Q-ST-40. b. Procedures to control hazards, health and safety to personnel, equipment or materials shall
27、be defined and implemented. 4.1.2 Material control 4.1.2.1 Procurement document a. For procurement specifications and purchase orders, the date of manufacture, storage conditions and shelf-life of the products shall be declared. 4.1.2.2 Identification a. Materials shall be labelled with the shelf-li
28、fe and the date of the beginning of life or the date of manufacture (see clause 4.1.3). NOTE In some critical applications, the project can reduce the shelf-life as originally stated by the manufacturer or supplier in order to meet particularly stringent product assurance requirements. b. For quanti
29、ties which are split from a batch, it shall be ensured that materials are fully traceable to it and bear the same date and life indications. 4.1.2.3 Storage a. Materials shall be stored in a nominally clean area at (22 3) C with a relative humidity of (55 10) % unless specified otherwise by the manu
30、facturer or supplier. EN 16602-70-22:2014 (E)BS EN 16602-70-22:2014NOTE A wide range of pre-impregnated composites, adhesives and related materials which are used in the fabrication of spacecraft structures at lower temperatures to preserve their shelf-lives. Refer to clause 4.1.3. b. Storage areas
31、shall be organized and controlled in such a way that limited shelf-life items are identified. NOTE The reason is to avoid the possibility of over-aged material being used. 4.1.2.4 Handling a. Materials shall be handled with clean lint-free or nylon gloves unless their use is precluded for reasons of
32、 safety. NOTE For example, when handling corrosive, toxic and oxidizing substances. 4.1.3 Assessment of shelf-life a. If the shelf-life cannot be obtained, the following steps shall be performed: 1. Certify the material at incoming inspection. NOTE Perform tests relevant to the application of the ma
33、terial to ensure that the properties are within those values either specified within the procurement specification or in the manufacturers data sheet (where no procurement specification exists). 2. Where satisfactory results are obtained, state that the material has spent half its shelf-life at the
34、time of delivery. 3. If the results are not satisfactory, reject the material. 4. Put the date of manufacture and shelf-life on the label attached to limited shelf-life material in conformance with clause 4.1.2.2. b. The quantity in each container shall be compatible with the planned short term usag
35、e. NOTE The reason is that the number of container openings is kept to the minimum possible. c. Materials shall be decanted from larger into smaller containers if there is large air space above the material. d. For materials which are stored at temperature below zero, a system shall be defined and i
36、mplemented to record the time exposed to room temperature and the consequent reduction in shelf-life when returned to low temperature storage. NOTE For materials normally stored at low temperature (below zero), exposure to room temperature can dramatically reduce the shelf-life. e. It shall be ensur
37、ed that all materials stored at temperatures below room temperature are allowed to attain room temperature prior to use. EN 16602-70-22:2014 (E)BS EN 16602-70-22:20144.1.4 Extension of shelf-life (re-certification) a. To extend the shelf-life of a material that has exceeded its shelf-life, the follo
38、wing activities shall be performed: 1. Re-certify the material for the first time by using the relevant tests in conformance with clause 4.1.6; 2. If the first re-certification is successful, extend the shelf-life equal to half the initial shelf-life; 3. Re-certify the material for the second time o
39、n a case-by-case basis depending on product, application, storage and user experience; 4. If the second re-certification is successful, extend the shelf-life to half of the first extension. b. If a fully traceable, non-over-aged batch is suspect, for any reason, the user shall submit it for re-certi
40、fication. c. Batches awaiting results of a re-certification process separately and shall be labelled as “suspended”. 4.1.5 Disposal of materials a. In case further re-certification is not permitted or traceability has been lost for a batch, or part of a batch, the user shall dispose the material in
41、conformance with the product assurance rules applicable to the project. 4.1.6 Acceptance criteria, re-certification testing a. Re-certification of material shelf-life shall be achieved by retesting the material to verify that its properties are still within their specified limits. b. Retesting shall
42、 include those properties specified in the procurement specification or performed during incoming inspection. NOTE The choice of properties to be measured is based on a combination of the final application of the material and its processing. c. The choice of properties to be measured and test method
43、s to be used shall be subject to the approval of product assurance. NOTE For examples of properties to be measured see Annex B. 4.2 Quality assurance 4.2.1 Data a. Quality records shall be retained for ten years or in conformance with project business agreement requirements. NOTE E.g. logbooks. b. T
44、he quality records shall be in conformance with Annex A. EN 16602-70-22:2014 (E)BS EN 16602-70-22:20144.2.2 Calibration a. Any measuring equipment shall be calibrated to traceable reference standards. b. Any suspected or actual equipment failure shall be recorded as a project nonconformance report a
45、ccording to the NCR DRD in ECSS-Q-ST-10-09. NOTE This is to ensure that previous results are examined to ascertain whether or not re-inspection and retesting is necessary. EN 16602-70-22:2014 (E)BS EN 16602-70-22:2014Annex A (normative) Shelf-life material evaluation report - DRD A.1 DRD identificat
46、ion A.1.1 Requirement identification and source document This DRD is called from ECSS-Q-ST-70-22, requirement 4.2.1b. A.1.2 Purpose and objective The purpose of the document is to describe the contents of the evaluation report for the control of limited shelf-life materials. A.2 Expected response A.
47、2.1 Scope and content a. The evaluation report shall contain the suppliers certification and definition of storage conditions. b. The evaluation report shall contain the copy of incoming inspection documentation. c. The evaluation report shall contain the nonconformance reports and corrective action
48、 (if applicable). d. The evaluation report shall contain the record of storage conditions and re-certification testing. A.2.2 Special remarks None. EN 16602-70-22:2014 (E)BS EN 16602-70-22:2014Annex B (informative) Examples of properties to be measured Properties which can be measured in order to ga
49、in re-certification are: a. Properties related to the individual components and the cure process that are particularly sensitive to the effects of ageing: 1. molecular weight distribution as determined by gel permeation chromatography; 2. molecular structure as determined by infrared spectroscopy; 3. degree of cure, cure exotherm and glass transition temperature as determined by differential scanning calorimetry; 4. measurement of pot life; 5. measurement of resin flow characteristics, such as gel time (particularly important in the case of fibre reinforced materia
