BS EN 16602-70-22:2014 BSI Standards Publication Space product assurance — Control of limited shelf-life materials BS EN 16602-70-22:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 16602-70-22:2014 It supersedes BS EN 14089:2002 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee ACE/68, Space systems and operations A list of organizations represented on this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 responsible for its correct application © The British Standards Institution 2014 Published by BSI Standards Limited 2014 ISBN 978 580 84602 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 of the Standards Policy and Strategy Committee on 30 November 2014 Amendments/corrigenda issued since publication Date Text affected EN 16602-70-22 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM October 2014 ICS 49.025.01; 49.140 Supersedes EN 14089:2002 English version Space product assurance - Control of limited shelf-life materials Assurance produit des projets spatiaux - Contrôle des équipements durée de vie limitée sur étagère Raumfahrtproduktsicherung - Kontrolle von Materialien mit begrenzter Lagerfähigkeit This European Standard was approved by CEN on 11 April 2014 CEN and CENELEC members are bound 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 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-CENELEC 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, France, 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 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members Ref No EN 16602-70-22:2014 E BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Table of contents Foreword Scope Normative references Terms, definitions and abbreviated terms 3.1 Terms defined in other standards .6 3.2 Terms specific to the present standard .6 3.3 Abbreviated terms Requirements 4.1 4.2 Control of material life .7 4.1.1 Hazards, health and safety precautions 4.1.2 Material control 4.1.3 Assessment of shelflife 4.1.4 Extension of shelflife (recertification) .9 4.1.5 Disposal of materials 4.1.6 Acceptance criteria, recertification testing Quality assurance .9 4.2.1 Data 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 Bibliography 13 BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Foreword This document (EN 16602-70-22:2014) has been prepared by Technical Committee CEN/CLC/TC “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 shall 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 document 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 Association 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 following 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Scope Several classes of materials depend on a chemical reaction for their application and their final properties are sensitive to the exact 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 shelflife materials employed in the fabrication of spacecraft and associated equipment This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00 BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard For dated references, subsequent amendments to, or revision of any of these publications 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 documents 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 ECSS-Q-ST-40 Space product assurance - Safety EN 16602-70 ECSS-Q-ST-70 Space product assurance - Materials, mechanical parts and processes BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Terms, definitions and abbreviated terms 3.1 Terms defined in other standards For the purpose of this Standard, the terms 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 3.2.2 One batch can be subdivided into several lots shelflife period of time during which a material can be processed to produce final properties 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 BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Requirements 4.1 Control of material life 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 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 shelflife of the products shall be declared 4.1.2.2 a Identification Materials shall be labelled with the shelflife and the date of the beginning of life or the date of manufacture (see clause 4.1.3) NOTE b For quantities 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 a In some critical applications, the project can reduce the shelflife as originally stated by the manufacturer or supplier in order to meet particularly stringent product assurance requirements Storage 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 manufacturer or supplier BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) NOTE b Storage areas shall be organized and controlled in such a way that limited shelflife items are identified NOTE 4.1.2.4 a Materials shall be handled with clean lintfree or nylon gloves unless their use is precluded for reasons of safety 4.1.3 For example, when handling corrosive, toxic and oxidizing substances Assessment of shelflife If the shelflife cannot be obtained, the following steps shall be performed: Certify the material at incoming inspection NOTE b The reason is to avoid the possibility of overaged material being used Handling NOTE a A wide range of preimpregnated composites, adhesives and related materials which are used in the fabrication of spacecraft structures at lower temperatures to preserve their shelflives Refer to clause 4.1.3 Perform tests relevant to the application of the material to ensure that the properties are within those values either specified within the procurement specification or in the manufacturer’s data sheet (where no procurement specification exists) Where satisfactory results are obtained, state that the material has spent half its shelflife at the time of delivery If the results are not satisfactory, reject the material Put the date of manufacture and shelflife on the label attached to limited shelflife material in conformance with clause 4.1.2.2 The quantity in each container shall be compatible with the planned short term usage 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 implemented to record the time exposed to room temperature and the consequent reduction in shelflife when returned to low temperature storage NOTE e For materials normally stored at low temperature (below zero), exposure to room temperature can dramatically reduce the shelflife It shall be ensured that all materials stored at temperatures below room temperature are allowed to attain room temperature prior to use BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) 4.1.4 a Extension of shelflife (recertification) To extend the shelf-life of a material that has exceeded its shelflife, the following activities shall be performed: Recertify the material for the first time by using the relevant tests in conformance with clause 4.1.6; If the first re-certification is successful, extend the shelflife equal to half the initial shelflife; Recertify the material for the second time on a casebycase basis depending on product, application, storage and user experience; If the second re-certification is successful, extend the shelflife to half of the first extension b If a fully traceable, nonoveraged batch is suspect, for any reason, the user shall submit it for recertification c Batches awaiting results of a recertification process separately and shall be labelled as “suspended” 4.1.5 a Disposal of materials In case further recertification is not permitted or traceability has been lost for a batch, or part of a batch, the user shall dispose the material in conformance with the product assurance rules applicable to the project 4.1.6 Acceptance criteria, recertification testing a Recertification of material shelflife shall be achieved by retesting the material to verify that its properties are still within their specified limits b Retesting shall include those properties specified in the procurement specification or performed during incoming inspection NOTE c The choice of properties to be measured and test methods to be used shall be subject to the approval of product assurance NOTE 4.2 The choice of properties to be measured is based on a combination of the final application of the material and its processing For examples of properties to be measured see Annex B Quality assurance 4.2.1 a Data Quality records shall be retained for ten years or in conformance with project business agreement requirements NOTE b E.g logbooks The quality records shall be in conformance with Annex A BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) 4.2.2 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 according 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 reinspection and retesting is necessary BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Annex A (normative) Shelf-life material evaluation report - DRD A.1 DRD identification 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.2.1 Scope and content a The evaluation report shall contain the supplier’s 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 (if applicable) d The evaluation report shall contain the record of storage conditions and recertification testing A.2.2 None Special remarks BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Annex B (informative) Examples of properties to be measured Properties which can be measured in order to gain recertification are: a b Properties related to the individual components and the cure process that are particularly sensitive to the effects of ageing: molecular weight distribution as determined by gel permeation chromatography; molecular structure as determined by infrared spectroscopy; degree of cure, cure exotherm and glass transition temperature as determined by differential scanning calorimetry; measurement of pot life; measurement of resin flow characteristics, such as gel time (particularly important in the case of fibre reinforced materials); measurement of the degree of tackiness in the case of preimpregnated materials Properties related to the materials application are measured on cured samples: adhesives - adhesive strength as determined by lap shear testing; coatings (paints and varnishes) - adhesion to the relevant substrate using measurements of peel and pulloff strength (see ECSS-Q-ST-70-13); conformal coatings - hardness, adhesion properties; potting compounds - hardness, electrical or thermal characteristics; fibrereinforced materials - resin/fibre/void content using chemical digestion techniques Measurement of relevant mechanical properties such as tensile strength or flexural strength BS EN 16602-70-22:2014 EN 16602-70-22:2014 (E) Bibliography EN reference Reference in text Title EN 16601-00 ECSS-S-ST-00 ECSS system - Description, implementation and general requirements EN 16602-70-13 ECSS-Q-ST-70-13 Space product assurance - Measurement of the peel and pulloff strength of coatings and finishes using pressuresensitive tapes EN 16602-70-22:2014 (E) This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions Our British Standards and other publications are updated by amendment or revision The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process Organizations of all sizes and across all sectors choose standards to help them achieve their goals Information on standards We can provide you with the knowledge that your organization needs to succeed Find out more about British Standards by visiting our website at bsigroup.com/standards or contacting our Customer Services team or Knowledge Centre Buying standards You can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at bsigroup.com/shop, where hard copies can also be purchased If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team Subscriptions Our range of subscription services are designed to make using standards easier for you For further information on our subscription products go to bsigroup.com/subscriptions With British Standards Online (BSOL) you’ll have instant access to over 55,000 British and adopted European and international standards from your desktop It’s available 24/7 and is refreshed daily so you’ll always be up to date You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member PLUS is an updating service exclusive to BSI Subscribing Members You will automatically receive the latest hard copy of your standards when they’re revised or replaced To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit bsigroup.com/shop With a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet Licences can cover as few or as many users as you wish With updates supplied as soon as they’re available, you can be sure your documentation is current For further information, email bsmusales@bsigroup.com BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK We continually improve the quality of our products and services to benefit your business If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre Copyright All the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI Details and advice can be obtained from the Copyright & Licensing Department Useful Contacts: Customer Services Tel: +44 845 086 9001 Email (orders): orders@bsigroup.com Email (enquiries): cservices@bsigroup.com Subscriptions Tel: +44 845 086 9001 Email: subscriptions@bsigroup.com Knowledge Centre Tel: +44 20 8996 7004 Email: knowledgecentre@bsigroup.com Copyright & Licensing Tel: +44 20 8996 7070 Email: copyright@bsigroup.com