DIN EN 16602-70-20-2015 Space product assurance - Determination of the susceptibility of silver-plated copper wire and cable to red-plague corrosion English version EN 16602-70-2.pdf

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1、Februar 2015DEUTSCHE NORM DIN-Normenausschuss Luft- und Raumfahrt (NL)Preisgruppe 14DIN Deutsches Institut fr Normung e. V. Jede Art der Vervielfltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut fr Normung e. V., Berlin, gestattet.ICS 49.140; 49.090!%F?“2273528www.din.deDDIN

2、 EN 16602-70-20Raumfahrtproduktsicherung Bestimmung der Anflligkeit von silberbeschichtetem Kupferdraht und-kabeln fr “red-plague“-Korrosion;Englische Fassung EN 16602-70-20:2014Space product assurance Determination of the susceptibility of silver-plated copper wire and cable to “red-plague“corrosio

3、n;English version EN 16602-70-20:2014Assurance produit des projets spatiaux Dtermination de la susceptibilit la rouille rouge des fils et cbles en cuivre argent;Version anglaise EN 16602-70-20:2014Alleinverkauf der Normen durch Beuth Verlag GmbH, 10772 Berlin www.beuth.deGesamtumfang 29 SeitenDIN EN

4、 16602-70-20:2015-02 2 Nationales Vorwort Dieses Dokument (EN 16602-70-20:2014) wurde vom Technischen Komitee CEN/CLC/TC 5 Raumfahrt“ erarbeitet, dessen Sekretariat vom DIN (Deutschland) gehalten wird. Das zustndige deutsche Normungsgremium ist der Arbeitsausschuss NA 131-10-01 AA Interoperabilitt v

5、on Informations-, Kommunikations- und Navigationssystemen“ im DIN-Normenausschuss Luft- und Raumfahrt (NL). Dieses Dokument (EN 16602-70-20:2014) basiert auf ECSS-Q-ST-70-20C. Dieses Dokument enthlt unter Bercksichtigung des DIN-Prsidialbeschlusses 1/2004 nur die englische Originalfassung von EN 166

6、02-70-20:2014. Dieses Dokument wurde speziell zur Behandlung von Raumfahrtsystemen erarbeitet und hat daher Vorrang vor jeglicher Europischer Norm, da es denselben Anwendungsbereich hat, jedoch ber einen greren Geltungsbereich (z. B. Luft- und Raumfahrt) verfgt. DIN EN 16602-70-20:2015-02 3 National

7、er Anhang NA (informativ) Begriffe und Abkrzungen 3 Begriffe und Abkrzungen 3.1 Begriffe aus anderen Normen Fr die Anwendung dieses Dokuments gelten die Begriffe nach ECSS-S-ST-00-01, insbesondere der folgende Begriff: Korrosion 3.2 Fr diese Norm spezifische Begriffe 3.2.1 Charge whrend eines Arbeit

8、sganges gefertigte Menge ANMERKUNG Eine Charge kann in mehrere Lose unterteilt sein. 3.2.2 Red Plague“ rotgefrbtes Korrosionsprodukt in Form von Kupferoxid (mglicherweise mit einem gewissen Anteil an schwarzem Kupferoxid), das entsteht, wenn sich zwischen Kupfer und Silber eine galvanische Zelle bil

9、det ANMERKUNG Eine Voraussetzung fr die Entstehung ist das Vorliegen von Feuchtigkeit oder Nsse. 3.3 Abkrzungen Fr die Anwendung dieses Dokuments gelten die Abkrzungen in ECSS-S-ST-00-01. DIN EN 16602-70-20:2015-02 4 Leerseite EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16602-70-20 October

10、2014 ICS 49.090; 49.140 English version Space product assurance - Determination of the susceptibility of silver-plated copper wire and cable to “red-plague“ corrosion Assurance produit des projets spatiaux - Dtermination de la susceptibilit la rouille rouge des fils et cbles en cuivre argent Raumfah

11、rtproduktsicherung - Bestimmung der Anflligkeit von silberbeschichtetem Kupferdraht und -kabeln fr “red-plague“-Korrosion 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

12、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

13、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

14、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, Luxembour

15、g, 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 na

16、tional Members and for CENELEC Members. Ref. No. EN 16602-70-20:2014 EEN 16602-70-20:2014 (E) 2 Table of contents Foreword 4 1 Scope . 5 2 Normative references . 6 3 Terms, definitions and abbreviated terms 7 3.1 Terms defined in other standards . 7 3.2 Terms specific to the present standard . 7 3.3

17、 Abbreviated terms. 7 4 Principles 8 5 Requirements 9 5.1 Preparatory conditions 9 5.1.1 Handling and storage 9 5.1.2 Identification 9 5.1.3 Test equipment . 9 5.2 Test procedure . 10 5.2.1 Preparation of test samples . 10 5.2.2 Test sequence 11 5.3 Acceptance criteria . 13 5.3.1 Inspection of sampl

18、e . 13 5.3.2 Acceptance and rejection criteria 13 5.4 Quality assurance . 14 5.4.1 Data 14 5.4.2 Calibration and traceability 14 Annex A (normative) Red-plague evaluation report - DRD 15 A.1 DRD identification . 15 A.1.1 Requirement identification and source document 15 A.1.2 Purpose and objective .

19、 15 A.2 Expected response . 15 A.2.1 Scope and content 15 A.2.2 Special remarks 15 DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 3 Annex B (informative) Example of red-plague evaluation report template 16 Annex C (informative) Codes for extent of corrosion 18 Bibliography . 25 Figures Figure 5-

20、1: Sketch of prepared test cable . 11 Figure 5-2: Example of test equipment . 12 Figure B-1 : Example of red-plague test report sheet . 17 Figure C-1 : Extent of Corrosion (per 20 cm length/test sample): Code 0 . 19 Figure C-2 : Extent of Corrosion (per 20 cm length/test sample): Code 1 . 20 Figure

21、C-3 : Extent of Corrosion (per 20 cm length/test sample): Code 2 . 21 Figure C-4 : Extent of Corrosion (per 20 cm length/test sample): Code 3 . 22 Figure C-5 : Extent of Corrosion (per 20 cm length/test sample): Code 4 . 23 Figure C-6 : Extent of Corrosion (per 20 cm length/test sample): Code 5 . 24

22、 Tables Table 5-1: Corrosion classification 14 DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 4 Foreword This document (EN 16602-70-20:2014) has been prepared by Technical Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN. This standard (EN 16602-70-20:2014) originates from

23、 ECSS-Q-ST-70-20C. 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 possibil

24、ity 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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Asso

25、ciation. 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 f

26、ollowing 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, Netherland

27、s, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 5 1 Scope This Standard gives details of an accelerated screening test method and acceptance criteria to determine the suitability o

28、f silver-plated wire and cable materials for use on spacecraft and associated equipment. The test method, which also determines the suitability of the associated fabrication processes, is based on the work of Anthony and Brown (1965). They established that “red-plague” originates at breaks in the si

29、lver-plating of copper wire strands in the presence of moisture and oxygen. The environmental test system artificially promotes “red-plague” corrosion under controlled laboratory conditions as a result of galvanic corrosion of the copper conductor core. This standard may be tailored for the specific

30、 characteristics and constraints of a space project in conformance with ECSS-S-ST-00. DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 6 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard. F

31、or dated references, subsequent amendments to, or revisions 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 most recent editions of the normative documents indicated below. For undated

32、 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 16602-20 ECSS-Q-ST-20 Space product assuran

33、ce Quality assurance EN 16602-70 ECSS-Q-ST-70 Space product assurance Materials, mechanical parts and processes DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 7 3 Terms, definitions and abbreviated terms 3.1 Terms defined in other standards For the purpose of this Standard, the terms and definit

34、ions from ECSS-S-ST-00-01 apply, in particular for the following terms: corrosion 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 red-plague red-coloured cuprous oxide (possibly with some black cupric

35、 oxide) corrosion product that forms when a galvanic cell is formed between copper and silver NOTE The presence of humidity or moisture is a prerequisite. 3.3 Abbreviated terms The abbreviated terms defined in ECSS-S-ST-00-01 apply. DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 8 4 Principles T

36、he principles of the corrosion test to determine the susceptibility of silver plate copper wire and cable to red-plague corrosion is to submit the item to be tested (wire and cable) for to a certain period of time to an oxygen rich atmosphere at elevated temperature in order to evaluate the resistan

37、ce of the item to deleterious effects as copper removal as a result of corrosion For this purpose the activities related to corrosion test standardization requirements are specified in clause 5. It is important to perform the work taking into account health and safety regulations, and in particular

38、the national standards on this subject. DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 9 5 Requirements 5.1 Preparatory conditions 5.1.1 Handling and storage a. The supplier shall handle all samples of wires and cables only with clean nylon or lint-free gloves. b. The supplier shall store the sa

39、mples before and after testing in a clean area. 5.1.2 Identification a. The samples of wires and cables submitted for testing shall be identified by the following: 1. Trade name 2. Source 3. Manufacturers code number 4. Batch number 5. Date of manufacture b. The construction details of wires or cabl

40、es shall include the following details: 1. Form 2. Principal dimensions 3. Description of insulation and conductor materials 4. Plating materials and their nominal thicknesses 5.1.3 Test equipment a. The supplier shall use the following test equipment for the test method: 1. Microscope, at least 20

41、magnification with attachment to enable photomicrograph. 2. Conical glass flasks NOTE For example: Erlenmeyer 250 ml. 3. Natural two holed rubber stoppers DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 10 4. Glass tubing having 3 mm - 6 mm internal diameter 5. Supply of oxygen gas 6. Gas flow re

42、gulator NOTE For example: Hoffman clips 7. Stock of deionized water 8. Length of copper wire having 1 mm - 2 mm diameter 9. Water trough, or other suitable temperature-control bath 10. Heater with temperature regulator 11. Thermometers 12. Scalpel and wire cutters that produce a shear 90 end cut 13.

43、 Any additional equipment enabling metallurgical analysis to be performed when called up by 5.3.1b. 5.2 Test procedure 5.2.1 Preparation of test samples a. The supplier shall take the wire or cable to be submitted to this test procedure from stock with minimum handling. b. The supplier shall remove

44、any particles or contamination visible on the outer insulation under a magnification of 10 with a clean, lint-free cloth. c. The supplier shall cut two adjacent test samples from the mid-length of the submitted wire or cable. Each test sample shall have a length of (200 50) mm. d. The supplier shall

45、 strip off insulation of one test sample and shall inspect the exposed (silver-)plated braid or strands visually for corrosion and contamination at a magnification of 20. e. In case of shielded cable, the supplier shall remove all inner conductors, strip off insulation and inspect the cable. f. The

46、supplier shall photograph any unusual features such as contamination or corrosion products present on the exposed (silver-)plated strands for control reference. g. The supplier shall prepare the second test sample for the corrosion test by removing the outer insulation jacket partially by using the

47、scalpel blade. h. The incisions either circumferential or longitudinal, shall not damage the metal conductors. i. The length of outer insulation to be removed shall be (20 5) mm from the sample end as shown in Figure 5-1. j. The supplier shall splay the outer braid when inner conductors are present

48、to give clear exposure of the cut ends of all inner strands. k. The supplier shall use sharp cutters to trim the inner conductors to ensure that the insulation has not sealed off the wires. DIN EN 16602-70-20:2015-02 EN 16602-70-20:2014 (E) 11 (200 50) mm (20 5) mm Figure 5-1: Sketch of prepared tes

49、t cable 5.2.2 Test sequence a. The test procedure shall be as follows: 1. Pour 200 ml of deionized water into the clean glass flask. 2. Insert the wire or cable sample into one hole of the two-hole stopper. NOTE Fix the wire in place with a short length of copper wire. 3. Insert a glass tube into the second hole, as shown in Figure 5-2. 4. Fit the stopper into the neck of the flask, together with a short length of copper wire to provide an air flow between flask and stopper. 5. Ensure that the glass tube extend i