EN 16603-35-06:2022
(Main)Space engineering - Cleanliness requirements for spacecraft propulsion hardware
Space engineering - Cleanliness requirements for spacecraft propulsion hardware
EN 16603-35-06 (equivalent of ECSS-E-ST-35-06) belongs to the Propulsion field of the mechanical discipline, and concerns itself with the cleanliness of propulsion components, sub-systems and systems
The standard
- defines design requirements which allow for cleaning of propulsion components sub-systems and systems and which avoid generation or unwanted collection of contamination,
- identifies cleanliness requirements (e.g. which particle / impurity / wetness level can be tolerated),
- defines requirements on cleaning to comply with the cleanliness level requirements, and the requirements on verification,
- identifies the cleanliness approach, cleaning requirements, (e.g. what needs to be done to ensure the tolerable level is not exceeded, compatibility requirements),
- identifies, specifies and defines the requirements regarding conditions under which cleaning or cleanliness verification takes place (e.g. compatibility, check after environmental test).
The standard is applicable to the most commonly used propulsion systems and their related storable propellant combinations: Hydrazine (N2H4), Mono Methyl Hydrazine (CH3N2H3), MON (Mixed Oxides of Nitrogen), Nitrogen (N2), Helium (He), Propane (C3H8), Butane (C4H10) and Xenon (Xe).
This standard is the basis for the European spacecraft and spacecraft propulsion industry to define, achieve and verify the required cleanliness levels in spacecraft propulsion systems.
This standard is particularly applicable to spacecraft propulsion as used for satellites and (manned) spacecraft and any of such projects including its ground support equipment.
External cleanliness requirements, e.g. outside of tanks, piping and aspects such as fungus and outgassing are covered by ECSS-Q-ST-70-01.
This standard may be tailored for the specific characteristic and constraints of a space project in conformance with ECSS-S-ST-00.
Raumfahrttechnik - Sauberkeitsanforderungen für die Antriebstechnik von Raumfahrzeugen
EN 16603-35-06 (equivalent of ECSS-E-ST-35-06) belongs to the Propulsion field of the mechanical discipline, and concerns itself with the cleanliness of propulsion components, sub-systems and systems The standard
• defines design requirements which allow for cleaning of propulsion components sub-systems and systems and which avoid generation or unwanted collection of contamination,
• identifies cleanliness requirements (e.g. which particle / impurity / wetness level can be tolerated),
• defines requirements on cleaning to comply with the cleanliness level requirements, and the requirements on verification,
• identifies the cleanliness approach, cleaning requirements, (e.g. what needs to be done to ensure the tolerable level is not exceeded, compatibility requirements),
• identifies, specifies and defines the requirements regarding conditions under which cleaning or cleanliness verification takes place (e.g. compatibility, check after environmental test).
The standard is applicable to the most commonly used propulsion systems and their related storable propellant combinations: Hydrazine (N2H4), Mono Methyl Hydrazine (CH3N2H3), MON (Mixed Oxides of Nitrogen), Nitrogen (N2), Helium (He), Propane (C3H8), Butane (C4H10) and Xenon (Xe).
This standard is the basis for the European spacecraft and spacecraft propulsion industry to define, achieve and verify the required cleanliness levels in spacecraft propulsion systems.
This standard is particularly applicable to spacecraft propulsion as used for satellites and (manned) spacecraft and any of such projects including its ground support equipment.
External cleanliness requirements, e.g. outside of tanks, piping and aspects such as fungus and outgassing are covered by ECSS-Q-ST-70-01.
This standard may be tailored for the specific characteristic and constraints of a space project in conformance with ECSS-S-ST-00.
Ingénierie spatiale - Exigences de propreté du matériel de propulsion des engins spatiaux
L'ECSS-E-ST-35-06 relève du domaine de la Propulsion rattaché à la discipline mécanique, et traite de la propreté des composants, des sous-systèmes et des systèmes de propulsion.
La présente norme
• définit les exigences de conception pour permettre le nettoyage des composants, sous-systèmes et systèmes et éviter la génération ou l'accumulation indésirable de contamination,
• identifie les exigences de propreté (par exemple : niveau de particules/d'impureté/d'humidité tolérable),
• définit les exigences à observer en matière de nettoyage afin de se conformer aux exigences de niveau de propreté, ainsi qu'aux exigences de vérification,
• identifie l'approche à adopter en termes de propreté, les exigences de nettoyage (par exemple : les actions à mener pour garantir de ne pas excéder le niveau tolérable, les exigences en termes de compatibilité),
• identifie, spécifie et définit les exigences relatives aux conditions dans lesquelles les opérations de nettoyage ou de vérification de la propreté se déroulent (par exemple : compatibilité, contrôle après essai environnemental).
La présente norme s'applique aux systèmes de propulsion les plus couramment utilisés, ainsi qu'à leurs combinaisons correspondantes de propergols stockables : hydrazine (N2H4), monométhylhydrazine (CH3N2H3), MON (oxydes d'azote mélangés), azote (N2), hélium (He), propane (C3H8), butane (C4H10) et xénon (Xe).
La présente norme constitue pour l'industrie européenne des engins spatiaux et de la propulsion spatiale un cadre de référence pour définir, atteindre et vérifier les niveaux de propreté requis dans les systèmes de propulsion des engins spatiaux.
Cette norme s'applique plus particulièrement à la propulsion spatiale utilisée pour les satellites et les engins spatiaux (habités), ainsi qu'à tout projet connexe, en incluant les équipements de support au sol correspondants.
Les exigences de propreté extérieure, par exemple, extérieur des réservoirs, tuyauterie et autres aspects tels que les champignons et le dégazage, sont couvertes dans l'ECSS-Q-ST-70-01.
La présente norme peut être adaptée aux caractéristiques et contraintes spécifiques d'un projet spatial conformément à l'ECSS-S-ST-00.
Vesoljska tehnika - Zahteve za čistočo pogonske tehnike vesoljskih plovil
Standard EN 16603-35-06 (enakovreden standardu ECSS-E-ST-35-06) pripada pogonskemu področju strojne discipline in zajema zahteve za čistočo pogonskih sestavnih delov, podsistemov in sistemov.
Standard:
– določa zahteve za projektiranje, ki omogočajo čiščenje pogonskih sestavnih delov, podsistemov in sistemov ter preprečujejo nastanek ali neželeno nabiranje onesnaženja;
– določa zahteve za čistočo (npr. kateri delec/nečistoča/raven vlažnosti je še dopusten);
– določa zahteve glede čiščenja v skladu z zahtevami ravni čistoče in zahtevami za preverjanje;
– opredeljuje pristop za čistočo, zahteve za čiščenje (npr. kaj je treba storiti, da se zagotovi, da dopustna raven ni presežena, zahteve za združljivost);
– opredeljuje, specificira in določa zahteve v zvezi s pogoji, pod katerimi poteka preverjanje čiščenja ali čistoče (npr. združljivost, preverjanje po okoljskem preskusu).
Ta standard se uporablja za večino najpogosteje uporabljenih pogonskih sistemov in njihovih povezanih kombinacij pogonskih goriv, ki jih je mogoče shraniti: hidrazin (N2H4), monometil hidrazin (CH3N2H3), MON (mešani dušikovi oksidi), dušik (N2), helij (He), propan (C3H8), butan (C4H10) in ksenon (Xe).
Ta standard je osnova za evropsko industrijo vesoljskih plovil in pogonsko industrijo za vesoljska plovila za določitev, doseganje ter preverjanje zahtevanih ravni čistoče v pogonskem sistemu vesoljskega plovila.
Ta standard se uporablja predvsem za pogon vesoljskih plovil, kot se ta uporablja za satelite in vesoljska plovila (s posadko) in katerega koli od teh projektov, vključno s podporno opremo na tleh.
Zahteve za zunanjo čistočo, npr. zunaj rezervoarjev in cevi, ter vidiki, kot so glive in razplinjevanje, so zajete v standardu ECSS-Q-ST-70-01.
Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS-S-ST-00.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 16603-35-06:2014
Vesoljska tehnika - Zahteve za čistočo pogonske tehnike vesoljskih plovil
Space engineering - Cleanliness requirements for spacecraft propulsion hardware
Raumfahrttechnik - Sauberkeitsanforderungen für die Antriebstechnik von
Raumfahrzeugen
Ingénierie spatiale - Exigences de propreté du matériel de propulsion des engins
spatiaux
Ta slovenski standard je istoveten z: EN 16603-35-06:2022
ICS:
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 16603-35-06
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2022
ICS 49.140
Supersedes EN 16603-35-06:2014
English version
Space engineering - Cleanliness requirements for
spacecraft propulsion hardware
Ingénierie spatiale - Exigences de propreté du matériel Raumfahrttechnik - Sauberkeitsanforderungen für die
de propulsion des engins spatiaux Antriebstechnik von Raumfahrzeugen
This European Standard was approved by CEN on 20 April 2022.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2022 CEN/CENELEC All rights of exploitation in any form and by any means
Ref. No. EN 16603-35-06:2022 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 6
1 Scope . 7
2 Normative references . 8
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. 12
3.4 Symbols .13
3.5 Nomenclature .13
4 Cleanliness requirements . 14
4.1 General .14
4.2 Design requirements .15
4.2.1 General . 15
4.2.2 Components.15
4.2.3 System .17
4.2.4 Ground support equipment (GSE) . 17
4.3 Manufacturing .18
4.3.1 General . 18
4.3.2 Manufacturing processes . 18
4.3.3 Machined parts .18
4.3.4 Tubing and manifolds .18
4.3.5 Components.19
4.3.6 Subsystems and systems. 21
4.3.7 Final rinsing solutions .21
4.4 Cleanliness classes definition .21
4.4.1 Particulate .21
4.4.2 Non-volatile residues (NVR) .25
4.4.3 Dryness and liquid residuals .25
4.4.4 Requirements on process fluids to meet cleanliness classes . 26
4.5 Test methods . 27
4.6 Code usage .27
5 Cleaning techniques . 28
5.1 General .28
5.2 Environment, health and safety.29
5.2.1 General . 29
5.2.2 Hardware configuration requirements. 29
5.2.3 Cleaning process approval .30
5.3 Pre-cleaning .30
5.3.1 General . 30
5.3.2 Mechanical pre-cleaning .30
5.3.3 Chemical pre-cleaning .31
5.4 Precision cleaning.32
5.4.1 General . 32
5.4.2 Re-cleaning operational systems . 32
5.5 Drying methods .33
5.5.1 General . 33
5.5.2 Gaseous purge-drying .33
5.5.3 Drying sample .34
5.5.4 Flow rates during purging . 35
5.5.5 Vacuum drying procedure .35
5.6 Excepted components, subsystems and systems . 36
6 Cleanliness verification requirements . 37
6.1 Surface .37
6.1.1 Visual and UV inspection . 37
6.1.2 pH-test .37
6.2 Acceptance inspection of items cleaned in a controlled environment . 38
6.2.1 General . 38
6.2.2 Test fluids .38
6.2.3 Test fluid volume for analysis .38
6.2.4 Analysis of test fluid-flush sample (solvent) . 39
6.2.5 Analysis of aqueous-based, liquid-flush sample . 40
6.2.6 Drying .41
6.2.7 Vacuum drying .41
6.3 Maintaining cleanliness .42
6.3.1 Pressurant gas purge .42
6.3.2 Installation and marking of temporary hardware . 42
6.3.3 Temporary hardware replacement . 42
6.3.4 Component replacement .43
6.4 Dryness verification .43
6.4.1 General . 43
6.4.2 Purge dryness .43
6.4.3 Vacuum dryness .43
6.4.4 Sample test and qualified procedure . 44
7 Acceptance inspection of packaging materials . 45
7.1 Environmental control .45
7.2 Sampling .45
7.3 Thickness of packaging film .45
7.4 Static electricity .46
7.5 Verification of cleanliness level .46
7.5.1 General . 46
7.5.2 Minimum surface area for test .46
7.5.3 Sample preparation .46
7.5.4 Rinsing procedures .47
8 Packaging and protection . 48
8.1 Approved coverings .48
8.2 Packaging operations .48
8.3 Certification labels .48
9 Deliverables . 50
10 Test procedures . 51
10.1 Test liquid-flush procedure (solvent) .51
10.2 Gas flow test procedure .51
11 Sampling and analytical practices . 52
11.1 Cleanliness level test methods.52
11.1.1 General . 52
11.1.2 Method I “Liquid Flush Test” .52
11.1.3 Method II “Liquid Flow Test” .53
11.1.4 Method III “Gas Flow Test” .53
11.1.5 Method IV “Liquid flow test under operating conditions” . 53
12 Determination of particle population and NVR analysis . 55
12.1 Microscopic particle population .55
12.2 Gravimetric NVR analysis method . 56
Annex A (normative) Cleanliness Requirements Analysis (CRA) for
spacecraft propulsion components, subsystems and systems - DRD . 57
Annex B (normative) Cleaning Technique Selection (CTS) for spacecraft
propulsion components, subsystems and systems - DRD . 59
Annex C (normative) Cleanliness Certificate (CC) for spacecraft
propulsion components, subsystems and systems - DRD . 61
Annex D (normative) Typical test and cleaning liquids. 64
Annex E (informative) Pre-cleaning sequences . 67
Annex F (informative) Cleanliness certificate . 69
Bibliography . 71
Figures
Figure F-1 : Example of a cleanliness certificate.
...
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