EN 16602-70-02:2014
(Main)Space product assurance - Thermal vacuum outgassing test for the screening of space materials
Space product assurance - Thermal vacuum outgassing test for the screening of space materials
This Standard describes a thermal vacuum test to determine the outgassing screening properties of materials proposed for use in the fabrication of spacecraft and associated equipment, for vacuum facilities used for flight hardware tests and for certain launcher hardware.
This Standard covers the following:
• critical design parameters of the test system;
• critical test parameters such as temperature, time, pressure;
• material sample preparation;
• conditioning parameters for samples and collector plates;
• presentation of the test data;
• acceptance criteria;
• certification of test systems and their operators by audits and round robin tests.
The test described in this Standard is applicable for all unmanned spacecraft, launchers, payloads, experiments. The test is also valid for external hardware of inhabited space systems and for hardware to be used in terrestrial vacuum test facilities.
The outgassing and condensation acceptance criteria for a material depend upon the application and location of the material and can be more severe than the standard requirements as given in clause 5.5.3.1.
This standard may be tailored for the specific characteristics and constrains of a space project in conformance with ECSS‐S‐ST‐00. 7
Raumfahrtproduktsicherung - Thermo-Vakuum-Ausgasungstest für die Auswahl von Raumfahrtmaterialien
Assurance produit des projets spatiaux - Essai de dégazage sous vide thermique pour sélection des matériaux d'un projet spatial
Zagotavljanje varnih proizvodov v vesoljski tehniki - Preskus s toplotnim vakuumskim odplinjanjem za presejanje vesoljskih materialov
Ta standard opisuje preskus s toplotnim vakuumskim odplinjanjem za ugotavljanje lastnosti s presejanjem z odplinjanjem za materiale, predlagane za uporabo pri izdelovanju vesoljskih plovil in povezane opreme, za vakuumske obrate, ki se uporabljajo za preskuse letalske strojne opreme ter za določeno strojno opremo lansirnikov. Ta standard obravnava naslednje elemente: • kritične parametre zasnove preskusnega sistema; • kritične preskusne parametre, kot so temperatura, čas, tlak; • pripravo vzorca materiala; • parametre staranja za vzorce in kolektorske plošče; • predstavitev preskusnih podatkov; • merila sprejemljivosti; • potrjevanje preskusnih sistemov in njihovih upravljavcev z revizijami in medlaboratorijskimi preskusi. Preskus, opisan v tem standardu, se uporablja za vsa plovila brez posadke, lansirnike, tovore, poskuse. Preskus velja tudi za zunanjo strojno opremo poseljenih vesoljskih sistemov ter za strojno opremo, ki se uporablja v zemeljskih vakuumskih preskusnih obratih. Merila sprejemljivosti za odplinjanje in kondenzacijo za material so odvisna od uporabe in lokacije materiala ter so lahko strožja od standardnih zahtev, kot je podano v točki 5.5.3.1. Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS‐S‐ST‐00. 7
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2015
1DGRPHãþD
SIST EN 14091:2004
Zagotavljanje varnih proizvodov v vesoljski tehniki - Preskus s toplotnim
vakuumskim odplinjanjem za presejanje vesoljskih materialov
Space product assurance - Thermal vacuum outgassing test for the screening of space
materials
Raumfahrtproduktsicherung - Thermo-Vakuum-Ausgasungstest für die Auswahl von
Raumfahrtmaterialien
Assurance produit des projets spatiaux - Essai de dégazage sous vide thermique pour
sélection des matériaux d'un projet spatial
Ta slovenski standard je istoveten z: EN 16602-70-02:2014
ICS:
49.025.01 Materiali za letalsko in Materials for aerospace
vesoljsko gradnjo na splošno construction in general
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 16602-70-02
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 49.140 Supersedes EN 14091:2002
English version
Space product assurance - Thermal vacuum outgassing test for
the screening of space materials
Assurance produit des projets spatiaux - Essai de Raumfahrtproduktsicherung - Thermo-Vakuum-
dégazage sous vide thermique pour sélection des Ausgasungstest für die Auswahl von Raumfahrtmaterialien
matériaux d'un projet spatial
This European Standard was approved by CEN on 13 March 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 Ref. No. EN 16602-70-02:2014 E
worldwide for CEN national Members and for CENELEC
Members.
Table of contents
Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms defined in other standards . 8
3.2 Terms specific to the present standard . 8
3.3 Abbreviated terms. 9
4 Test overview . 11
4.1 Test process description . 11
4.2 Acceptance limits . 14
5 Requirements . 15
5.1 General requirements . 15
5.2 Preparatory conditions . 15
5.2.1 Hazards, health and safety precautions . 15
5.2.2 Material samples . 16
5.2.3 Facilities . 18
5.2.4 Equipment . 18
5.3 Test procedure . 20
5.3.1 General requirements . 20
5.3.2 Test process for general spacecraft application . 20
5.4 Reporting of test data . 23
5.5 Acceptance limits . 24
5.5.1 General requirements . 24
5.5.2 Acceptance limits for a retest of the material . 24
5.5.3 Acceptance limits for application of a material . 25
5.6 Quality assurance . 27
5.6.1 Data . 27
5.6.2 Calibration . 27
5.7 Audit of the Micro-VCM test apparatus . 27
5.7.1 General . 27
5.7.2 Initial audit of the system (acceptance) . 28
5.7.3 Annual regular review (maintenance) of the system . 29
5.7.4 Special review . 30
Annex A (normative) Materials identification card (MIC) - DRD . 31
Annex B (normative) Micro-VCM worksheet - DRD . 34
Annex C (normative) Micro-VCM datasheet - DRD . 37
Annex D (normative) Thermal vacuum outgassing test report - DRD . 40
Annex E (normative) Certificate of conformity for Micro-VCM - DRD . 42
Bibliography . 44
Figures
Figure 4-1: Flow chart of preparation and initial measurements . 11
Figure 4-2: Flow chart of test process . 12
Figure 4-3: Parameters for sample . 13
Figure 4-4: Parameters for collector plate . 13
Figure 5-1: Micro-VCM equipment . 20
Figure A-1 : Example of filled MIC . 33
Figure B-1 : Example of filled in Micro-VCM worksheet . 36
Figure C-1 : Example of filled in Micro-VCM datasheet . 39
Figure E-1 : Example of a certificate of conformity for Micro-VCM . 43
Tables
Table B-1 : Outgassing screening properties . 35
Foreword
This document (EN 16602-70-02:2014) has been prepared by Technical Committee
CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-02:2014) originates from ECSS-Q-ST-70-02C.
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 14091:2002.
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.
Introduction
The kinetics of an outgassing process is influenced by vacuum and temperature
conditions.
The method described in this Standard gives reliable data for material screening
use exclusively. The nominal temperature for the screening test, as described in
this standard is 125 °C. Results from the nominal screening test can be used for
the screening of materials that have an operational temperature below 50 °C,
especially if they are exposed for an extended period of time (in the order of
weeks and above).
Scope
This Standard describes a thermal vacuum test to determine the outgassing
screening properties of materials proposed for use in the fabrication of spacecraft
and associated equipment, for vacuum facilities used for flight hardware tests
and for certain launcher hardware.
This Standard covers the following:
• critical design parameters of the test system;
• critical test parameters such as temperature, time, pressure;
• material sample preparation;
• conditioning parameters for samples and collector plates;
• presentation of the test data;
• acceptance criteria;
• certification of test systems and their operators by audits and round robin
tests.
The test described in this Standard is applicable for all unmanned spacecraft,
launchers, payloads, experiments. The test is also valid for external hardware of
inhabited space systems and for hardware to be used in terrestrial vacuum test
facilities.
The outgassing and condensation acceptance criteria for a material depend upon
the application and location of the material and can be more severe than the
standard requirements as given in clause 5.5.3.1.
This standard may be tailored for the specific characteristics and constrains of a
space project in conformance with ECSS-S-ST-00.
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 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
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 ECSS-Q-ST-10 Space product assurance – Product assurance
management
EN 16602-10-09 ECSS-Q-ST-10-09 Space product assurance – Nonconformance control
system
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 bakeout
activity of increasing the temperature of hardware to accelerate its outgassing
rates with the intent of reducing the content of molecular contaminants within
the hardware
NOTE Bakeout is usually performed in a vacuum
environment but may be done in a controlled
atmosphere.
3.2.2 cleanroom
room in which the concentration of airborne particles is controlled, and which is
constructed and used in a manner to minimize the introduction, generation, and
retention of particles inside the room, and in which other relevant parameters,
e.g. temperature, humidity, and pressure, are controlled as necessary
[ISO 14644-6]
3.2.3 collected volatile condensable material (CVCM)
quantity of outgassed matter from a test specimen that condenses on a collector
maintained at a specific temperature for a specific time
NOTE CVCM is expressed as a
...
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