SIST EN 16603-35-10:2014
(Main)Space engineering - Compatibility testing for liquid propulsion components, subsystems and systems
Space engineering - Compatibility testing for liquid propulsion components, subsystems and systems
ECSS-E-ST-35-10 belongs to the propulsion field of the mechanical discipline, as defined in ECSS-S-ST-00, and concerns itself with compatibility testing of propulsion components, sub-systems and systems. Compatibility encompasses the interaction of two or more materials, solids (e.g. structural materials), liquids (e.g. propellants, simulation and cleaning liquids) or gases (e.g. air, pressurants). In case the interaction has the effect that the properties of the materials change, there is the possibility of a compatibility issue. The standard: - identifies materials used in propulsion for which incompatibility can create problems, - identifies the time scale at which problems can occur. It makes a difference whether a system is only stored or operational for a short period and is to function only during launch (time scale measured in months) and systems that have a long life in orbit (time scale measured in years), - identifies the liquid propulsion components, subsystems and systems to be subject to compatibility testing, - identifies, specifies and defines the tests, test conditions and compatibility test procedures to ensure that representative compatibility testing can take place, and - establishes the test requirements. The standard is applicable to the design and the qualification of liquid propulsion components, sub-systems and systems and can be applied to their development; it also applies to COTS items procured for the propulsion system. From the tests described in this standard the effects of interactions of space propulsion materials and fluids on the components, subsystems and systems can be established. In this way it can be assured that the component, subsystem or system satisfies the requirements. This standard is limited to tests on component-, subsystem- and system-level. Only for those cases where new materials, substances or conditions are involved for which there is no experience or data available, the performance of screening tests is specified. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.
Raumfahrttechnik - Kompatibilitätstests für Flüssigkeitsantriebe
Ingénierie spatiale - Essais de compatibilité des composants, sous-systèmes et systèmes de propulsion liquide
Vesoljska tehnika - Preskušanje skladnosti komponent tekočih pogonskih goriv
Standard ECSS-E-ST-35-10 pripada pogonskemu področju strojne discipline, kot je določeno v standardu ECSS-S-ST-00, in zajema testiranje združljivosti pogonskih sestavnih delov, podsistemov in sistemov. Združljivost zajema interakcijo dveh ali več materialov, trdnih snovi (npr. strukturnih materialov), tekočin (npr. pogonskih goriv, simulacijskih in čistilnih tekočin) ali plinov (npr. zrak, plini). Če je posledica interakcije sprememba lastnosti materialov, obstaja možnost težave z združljivostjo. Standard: - določa materiale za uporabo pri pogonu, pri katerih lahko nezdružljivost povzroči težave, - določa časovni okvir, v katerem lahko pride do težav. Ni vseeno, ali je sistem samo shranjen ali deluje le kratek čas in je namenjen le delovanju med izstrelitvijo (časovni okvir, merjen v mesecih) ali pa imajo sistemi dolgo življenjsko dobo v orbiti (časovni okvir, merjen v letih); - določa komponente tekočih pogonskih goriv, podsistemov in sistemov, ki so podvrženi preskusu združljivosti, - opredeljuje, specificira in določa preskuse, preskusne pogoje in postopke za preskus združljivosti, da je mogoče zagotoviti reprezentativno preskušanje združljivosti in - določa zahteve preskusa. Ta standard se uporablja za načrtovanje in ustreznost komponent tekočih pogonskih goriv, podsistemov in sistemov, ki jih je mogoče uporabiti za njihov razvoj; velja tudi za elemente COTS, pridobljene za pogonski sistem. Iz preskusov, opisanih v tem standardu, je mogoče določiti učinke medsebojnih vplivov vesoljskih pogonskih materialov in tekočin na sestavne dele, podsisteme in sisteme. Na ta način je mogoče zagotoviti, da sestavni del, podsistem ali sistem izpolnjuje zahteve. Ta standard je omejen na preskuse sestavnih delov, podsistemov in sistemov. Rezultati presejalnih testov so določeni le v primerih, kjer so prisotni novi materiali, snovi ali pogoji, za katere še ni izkušenj ali podatkov. Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS-S-ST-00.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Raumfahrttechnik - Kompatibilitätstests für FlüssigkeitsantriebeIngénierie spatiale - Essais de compatibilité des composants, sous-systèmes et systèmes de propulsion liquideSpace engineering - Compatibility testing for liquid propulsion components, subsystems and systems49.140Vesoljski sistemi in operacijeSpace systems and operationsICS:Ta slovenski standard je istoveten z:EN 16603-35-10:2014SIST EN 16603-35-10:2014en,fr,de01-november-2014SIST EN 16603-35-10:2014SLOVENSKI
STANDARD
SIST EN 16603-35-10:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16603-35-10
September 2014 ICS 49.140
English version
Space engineering - Compatibility testing for liquid propulsion components, subsystems and systems
Ingénierie spatiale - Essais de compatibilité des composants, sous-systèmes et systèmes de propulsion liquide
Raumfahrttechnik - Kompatibilitätstests für Flüssigkeitsantriebe This European Standard was approved by CEN on 1 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 worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 16603-35-10:2014 E SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 2 Table of contents Foreword . 5 1 Scope . 6 2 Normative references . 7 3 Terms, definitions and abbreviated terms . 10 3.1 Terms from other standards . 10 3.2 Terms specific to the present standard . 10 3.3 Abbreviated terms. 11 4 General requirements for compatibility tests . 13 4.1 General . 13 4.1.1 Compatibility test assessment . 13 4.1.2 Test conditions . 13 4.1.3 Test duration . 13 4.1.4 Criticality . 14 4.1.5 Phasing of tests . 14 4.2 Compatibility tests. 14 4.2.1 Requirement for compatibility testing . 14 4.2.2 Compatibility testing of surface treated samples . 14 4.2.3 Provision COTS components . 15 4.2.4 Compatibility testing logic . 15 4.2.5 Compatibility test plan and compatibility test procedure . 16 4.2.6 Accept and reject criteria . 16 4.2.7 Deviations from standards or standard guides . 16 4.2.8 Execution of tests . 16 5 Identification of compatibility problems for liquid propulsion systems . 19 5.1 General . 19 5.1.1 Overview . 19 5.1.2 Compatibility aspects . 19 5.2 Ground storage and transport . 19 5.2.1 Ground storage . 19 SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 3 5.2.2 Transport . 20 5.3 Known incompatibilities . 20 5.3.1 Table of known incompatibilities . 20 5.3.2 General . 20 6 Identification of tests to characterize the compatibility . 21 6.1 Compatibility tests. 21 6.1.1 Overview . 21 6.1.2 Safety test . 21 6.1.3 Environmental pollution . 21 6.1.4 Test sequence . 22 6.2 Pure compatibility tests . 22 6.2.1 Immersion screening tests . 22 6.2.2 Qualitative immersion tests . 23 6.2.3 Immersion characterization tests . 25 6.3 Material selection corrosion tests . 27 6.3.1 Overview . 27 6.3.2 Red-Ox potential test . 27 6.3.3 Corrosion potential test . 27 6.4 Mechanical properties testing . 27 6.4.1 Tensile tests . 27 6.4.2 Creep tests . 28 6.4.3 Stress corrosion tests . 28 6.4.4 Verification of crack propagation . 29 6.5 General corrosion tests . 29 6.5.1 General corrosion . 29 6.5.2 Galvanic corrosion test . 29 6.5.3 Coupled galvanic corrosion, crevice corrosion and pitting corrosion tests. . 29 6.5.4 Corrosion of ceramic materials . 30 6.6 Polymers and ceramics properties change due to liquid exposure tests . 30 6.6.1 General . 30 6.6.2 Mechanical properties . 30 6.6.3 Volume and mass properties . 31 6.6.4 Permeability . 31 6.7 Ageing tests . 31 6.7.1 Overview . 31 6.7.2 Ageing of polymers and lubricants . 32 SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 4 6.7.3 Ageing of ceramics. 33 6.8 Dissolution test . 34 6.8.1 Overview . 34 6.8.2 Dissolution of solids in liquids . 34 6.8.3 Miscibility of liquids . 35 6.8.4 Dissolution of gases in liquids . 36 6.9 Special materials testing . 37 6.9.1 Hydrogen embrittlement tests . 37 6.9.2 Oxygen compatibility tests . 38 6.10 Operational tests . 39 6.10.1 Overview . 39 6.10.2 Provisions . 39 7 Deliverables . 41 Annex A (normative) Compatibility assessment and applicability report for liquid propulsion components, subsystems and systems (CAAR) - DRD . 42 Annex B (normative) Compatibility Testing for Liquid Propulsion Report (CTLP) - DRD . 47 Annex C (normative) Propulsion components and subsystems compatibility aspects . 50 Annex D (normative) Known incompatibilities . 55 Annex E (informative) Example of tailoring the requirements list for propulsion systems . 64 7.2 Use of the compatibility testing flow chart for Liquid Propulsion System compatibility testing . 64 Bibliography . 66
Figures Figure 4-1: Compatibility testing flow chart . 18 Figure A-1 : Example of compatibility assessment . 45 Figure A-2 : Example of compatibility assessment, references . 46
Tables Table D-1 : Known incompatibilities . 55
SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 5 Foreword This document (EN 16603-35-10:2014) has been prepared by Technical Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN. This standard (EN 16603-35-10:2014) originates from ECSS-E-ST-35-10C. 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 March 2015, and conflicting national standards shall be withdrawn at the latest by March 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 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. SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 6 1 Scope ECSS-E-ST-35-10 belongs to the propulsion field of the mechanical discipline, as defined in ECSS-S-ST-00, and concerns itself with compatibility testing of propulsion components, sub-systems and systems.
Compatibility encompasses the interaction of two or more materials, solids (e.g. structural materials), liquids (e.g. propellants, simulation and cleaning liquids) or gases (e.g. air, pressurants). In case the interaction has the effect that the properties of the materials change, there is the possibility of a compatibility issue. The standard:
• identifies materials used in propulsion for which incompatibility can create problems,
• identifies the time scale at which problems can occur. It makes a difference whether a system is only stored or operational for a short period and is to function only during launch (time scale measured in months) and systems that have a long life in orbit (time scale measured in years),
• identifies the liquid propulsion components, subsystems and systems to be subject to compatibility testing,
• identifies, specifies and defines the tests, test conditions and compatibility test procedures to ensure that representative compatibility testing can take place, and
• establishes the test requirements. The standard is applicable to the design and the qualification of liquid propulsion components, sub-systems and systems and can be applied to their development; it also applies to COTS items procured for the propulsion system. From the tests described in this standard the effects of interactions of space propulsion materials and fluids on the components, subsystems and systems can be established. In this way it can be assured that the component, subsystem or system satisfies the requirements. This standard is limited to tests on component-, subsystem- and system-level. Only for those cases where new materials, substances or conditions are involved for which there is no experience or data available, the performance of screening tests is specified. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00. SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 7 2 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 16603-32 ECSS-E-ST-32 Space engineering – Structural general requirements EN 16603-32-10 ECSS-E-ST-32-10 Space engineering – Structural factors of safety for spaceflight hardware EN 16603-35 ECSS-E-ST-35
Space engineering – Propulsion general requirements EN 16603-35-06 ECSS-E-ST-35-06 Space engineering – Cleanliness requirements for spacecraft propulsion hardware EN 16602-70-36 ECSS-Q-ST-70-36 Space product assurance – Material selection for controlling stress-corrosion cracking EN 16602-70-37 ECSS-Q-ST-70-37 Space product assurance – Determination of the susceptibility of metals to stress-corrosion cracking EN 16602-70-45 ECSS-Q-ST-70-45 Space product assurance – Mechanical testing of metallic materials
ASTM C 1291-00a Standard Test Method for Elevated Temperature Tensile Creep Strain, Creep Strain Rate, and Creep Time-to-Failure for Advanced Monolithic Ceramics
ASTM C 1337-96 Standard Test Method for Creep and Creep Rupture of Continuous Fiber-Reinforced Ceramic Composites under Tensile Loading at Elevated Temperatures
ASTM C 1368-06 Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Ambient Temperature
ASTM C 1465-08 Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Elevated SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 8 Temperatures
ASTM C 1576-05 Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress Flexural Testing (Stress Rupture) at Ambient Temperature
ASTM D 395 Test Methods for Rubber Property—Compression Set
ASTM D 570-98
Standard Test Method for Water Absorption of Plastics
ASTM D 624-00 Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
ASTM D 638-03 Standard Test Method for Tensile Properties of Plastics
ASTM D 1434-82 (Reapproved 2003) Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting
ASTM D 2240-04 Standard Test Method for Rubber Property – Durometer Hardness
ASTM G 4-95 Standard Guide for Conducting Corrosion Coupon Tests in Field Applications
ASTM G 31-72 (Reapproved 1999) Standard Practice for Laboratory Immersion Corrosion Testing of Materials
ASTM G 71-81 (reapproved 1998) Standard Guide for Conducting and Evaluating Galvanic Corrosion Tests in Electrolytes.
ASTM G 72-01 Standard Test Method for Autogenous Ignition Temperature of Liquids and Solids in a High-Pressure Oxygen-Enriched Environment
ASTM G 86-98a Standard test method for Determining Ignition Sensitivity of Materials to Mechanical Impact in Ambient Liquid Oxygen and Pressurized Liquid and Gaseous Oxygen Environments
ASTM G 111-97 Standard Guide for Corrosion Tests in High Temperature or High Pressure Environment, or Both
ASTM G 142-98 Standard Test Method for Determination of Susceptibility of Metals to Embrittlement in Hydrogen Containing Environments at High Pressure, High Temperature, or Both
ISO 175 Plastics; Methods of Tests for the Determination of the Effects of Immersion in Liquid Chemicals
ISO 1817, 3rd edition 1999-03-01 Rubber, vulcanized – Determination of the effect of liquids
ISO 10297 Transportable gas cylinders — Cylinder valves — Specification and type testing
ISO 15859-1 Space systems – Fluid characteristics sampling and test methods - Oxygen SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 9
ISO 15859-7 Space systems – Fluid characteristics sampling and test methods – Hydrazine
ISO 21010 Cryogenic vessels — Gas/materials compatibility
NACE TM0499-99 Item No. 21239 Standard Test Method Immersion Corrosion Testing of Ceramic Materials
SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 10 3 Terms, definitions and abbreviated terms 3.1 Terms from other standards For the purpose of this Standard, the terms and definitions from ECSS-ST-00-01 and ECSS-E-ST-35 apply. For the purpose of this Standard, the following term from ECSS-E-ST-32 applies: maximum expected operating pressure (MEOP) For the purpose of this Standard, the following term from ECSS-Q-ST-70-36 applies: stress corrosion
3.2 Terms specific to the present standard 3.2.1 ageing entirety of all changes in chemical and physical characteristics occurring in a material in the course of time 3.2.2 auto ignition temperature lowest temperature at which a substance produces hot-flame ignition in the environment and at the pressure without the aid of an external energy source 3.2.3 compatibility absence of unacceptable performance or reliability loss due to chemical reactions and physical changes in materials or substances during the compatibility life NOTE 1 Compatibility always involves two or more materials in contact with each other. NOTE 2 Compatibility is always related to the application and the requirements. 3.2.4 compatibility life life cycle from the first exposure of two or more materials to each other until disposal SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 11 3.2.5 contaminant gas undesired gas present in the propulsion system at any time in its life 3.2.6 corrosion reaction of the engineering material with its environment with a consequent deterioration in properties of the material
3.2.7 dissimilar metals metals with different electrochemical potentials 3.2.8 galvanic corrosion corrosion as a result of an electrochemical potential difference between electrical conductors in an electrolyte 3.2.9 hydrogen embrittlement condition of low ductility or reduced mechanical properties resulting from the absorption of hydrogen NOTE
stress intensity factor, K factor describing the stress state near the tip of a crack caused by a remote load, residual stress or both. NOTE
The magnitude of K depends on sample geometry, the size and location of the crack, and the magnitude and the modal distribution of loads on the material. aYK⋅⋅⋅=πσ where: a half the crack length K stress intensity factor
Y dimensionless geometrical function σ applied stress 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 CAAR compatibility assessment and applicability report COTS commercial of-the-shelf CPE chlorinated poly ethylene CTLP compatibility testing for liquid propulsion DSC differential scanning calorimeter EPDM ethylene propylene diene monomer EPR ethylene propylene rubber SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 12 GOx gaseous oxygen LOx liquid oxygen MMH mono methyl hydrazine MON mixed oxides of nitrogen (MON-X is X% NO and (100-X) % of N2O4 NVR non-volatile residue PVC poly vinyl chloride SEM scanning electron microscope SS stainless steel TGA thermal gravimetric analysis
SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 13 4 General requirements for compatibility tests 4.1 General 4.1.1 Compatibility test assessment a. The supplier shall analyse and define the conditions for the compatibility tests with respect to the application and the requirements for the component, sub-system or system and define them in conformance with the DRD in Annex A. 4.1.2 Test conditions a. Compatibility testing shall take place under conditions reproducing the actual use of the items. NOTE
For example: The test items treatments, processes and handling, to be the same as those for the actual flight hardware items.
b. The extent of compatibility testing shall comply with the reliability requirements for the component, subsystem or system. 4.1.3 Test duration a. The duration of the compatibility test shall be established using the compatibility life and mission reliability requirements
NOTE 1 The type of information to be obtained for the component, subsystem or system is e.g. a quick first impression or an impression based on an exposure under well controlled conditions with detailed and precise measurements. NOTE 2 For short compatibility lives (e.g. as for launchers), the duration of compatibility tests can be the same as the compatibility life or somewhat larger. For large compatibility lives (e.g. satellites in orbit) accelerated compatibility tests can be used. SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 14 4.1.4 Criticality a. In Phase A and in Phase B the following shall be performed: 1. establish which compatibility problems are expected, or where there is a lack of information; 2. ranking of the severity of the compatibility problems; 3. assess and report the criticality and the effect on material selection and planning in conformance with Annex A. NOTE
The severity of the compatibility issue can lead to intensive investigations (new materials, development risks), which can endanger the development schedule. 4.1.5 Phasing of tests a. The compatibility tests of clauses 4.2 and 5.1.2 shall be performed early during project Phase B. NOTE
This requirement is included in order that a proper material selection can be made, and that a proper data base can be established for the PDR. The priority and the planning of the tests is based on their duration or on those combinations of materials where the compatibility problems have been ranked severe. 4.2 Compatibility tests 4.2.1 Requirement for compatibility testing a. Compatibility testing of material combinations in propulsion systems shall be done in case there is no experimental or historical evidence that the combination meets the compatibility requirements. NOTE
This includes simulation and cleaning fluids, purging gases and cleaning and drying processes. b. The need for compatibility testing shall be assessed and included in
Annex A. 4.2.2 Compatibility testing of surface treated samples a. Samples of surface treated materials for propulsion systems, where there is no evidence that they meet the compatibility life, shall undergo compatibility testing. SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 15 b. ‘Untreated’ parts of the samples shall be insulated or protected in such a way that they do not disturb the measurements or cause false information. NOTE
Surface treatment of materials is done for various reasons, amongst which improving the material compatibility characteristics. Typical surface treatments encompass passivation / chemical etching, anodising, polishing, coating such as: painting, plating, vacuum spraying / vacuum deposition, electro-deposition, organic coating, or changing surface properties by chemical adsorption (e.g. nitration, carbonization). 4.2.3 Provision COTS components 4.2.3.1 General a. It shall be demonstrated that COTS components meet the compatibility life requirement.
NOTE
For cost or time reasons COTS components can be selected for propulsion systems. If there is no certainty that all components of the COTS components meet the compatibility requirements, solutions are sought (e.g. redesign, surface treatment, replacement, requalification). 4.2.3.2 Surface treatment of COTS components a. If a component has undergone a surface treatment to meet the compatibility requirements, this component shall undergo compatibility testing in conformance with clauses 4.1.2 and 4.1.3. b. Modified COTS components shall undergo re-qualification and full functional testing to ensure its functionality according to clause 6.10. 4.2.4 Compatibility testing logic a. For completely unknown material combinations that involve energetic materials or materials for which the possibility exists of generating toxic or poisonous materials, safety tests shall be performed before starting compatibility testing, see clause 6.1.2. b. Compatibility testing should take place following the logic of Figure 4-1 NOTE 1 This guarantees that they are performed with increasing complexity, generation of details, and for the specific applications. NOTE 2 The requirements list needs to be tailored. It
depends on the specific application which tests are going to be performed and which by-SIST EN 16603-35-10:2014
EN 16603-35-10:2014 (E) 16 passed: e.g. if no hydrogen is involved, no hydrogen embrittlement tests are performed. NOTE 3 An example of tailoring the requirements list is given in Annex C and Annex E. 4.2.5 Compatibility test plan and compatibility test procedure a. For every propulsion compatibility test the following shall be performed:
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