EN 16602-70-50:2015
(Main)Space product assurance - Particles contamination monitoring for spacecraft systems and cleanrooms
Space product assurance - Particles contamination monitoring for spacecraft systems and cleanrooms
This standard defines the requirements and guidelines for the measurement of particulate contamination on the surfaces of spacecraft systems and those of the cleanrooms or other cleanliness controlled areas in which they reside.
This includes the measurement of particulate contamination that is present on the spacecraft or cleanroom surfaces via the use of representative witness samples placed in the vicinity of the spacecraft hardware, the direct measurement of particulate contamination
levels on surfaces of spacecraft hardware from the direct surface transfer to adhesive tape-lift samples and particulate contaminant levels within fluids used for the cleaning or rinsing of such spacecraft system components and cleanroom surfaces. This standard also defines the methods to be used for the visual inspection of spacecraft system hardware for particulate contamination.
The measurement of airborne particulate contamination is not covered in this standard and ISO 14644 “Cleanrooms and associated
controlled environments” is applicable in this case.
This standard does not cover particulate contamination monitoring for spacecraft propulsion hardware which is covered in ECSS-E-ST-35-06.
This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.
Raumfahrtproduktsicherung - Überwachung der Teilchenkontamination von Raumfahrzeugsystemen und Reinräumen
Assurance produit des projets spatiaux - Surveillance de la contamination aux particules des systèmes orbitaux et des salles blanches
Zagotavljanje varnih proizvodov v vesoljski tehniki - Nadzorovanje onesnaženja z delci v sistemih vesoljskega plovila in čistih prostorih
Ta standard določa zahteve in smernice za merjenje onesnaženja z delci na površinah sistemov vesoljskega plovila in površinah čistih prostorov ali drugih območij z nadzorom čistoče, v katerih bivajo. Sem spada merjenje onesnaženja z delci, ki je prisotno na površinah vesoljskega plovila ali čistih prostorov, z uporabo reprezentativnih vzorcev v bližini strojne opreme vesoljskega plovila, neposredno merjenje ravni onesnaženja z delci na površinah strojne opreme vesoljskega plovila z neposrednega prenosa s površin na vzorce, zbrane z adhezivnim trakom, in ravni onesnaženja z delci v tekočinah, ki se uporabljajo za čiščenje ali splakovanje teh komponent sistemov vesoljskega plovila in površin čistih prostorov. Ta standard določa tudi metode, ki se uporabljajo za vizualni pregled strojne opreme sistemov vesoljskega plovila za onesnaženje z delci. Merjenje onesnaženja z delci v zraku ni obravnavano v tem standardu; v tem primeru se uporablja standard ISO 14644 »Čiste sobe in podobna nadzorovana okolja«. Ta standard ne obravnava nadzorovanja onesnaženja z delci za pogonsko strojno opremo vesoljskega plovila, kar je obravnavano v standardu ECSS-E-ST-35-06. Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS-S-ST-00
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2015
=DJRWDYOMDQMHYDUQLKSURL]YRGRYYYHVROMVNLWHKQLNL1DG]RURYDQMHRQHVQDåHQMD]
GHOFLYVLVWHPLKYHVROMVNHJDSORYLODLQþLVWLKSURVWRULK
Space product assurance - Particles contamination monitoring for spacecraft systems
and cleanrooms
Raumfahrtproduktsicherung - Überwachung der Teilchenkontamination von
Raumfahrzeugsystemen und Reinräumen
Assurance produit des projets spatiaux - Surveillance de la contamination aux particules
des systèmes orbitaux et des salles blanches
Ta slovenski standard je istoveten z: EN 16602-70-50:2015
ICS:
13.040.35 Brezprašni prostori in Cleanrooms and associated
povezana nadzorovana controlled environments
okolja
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 16602-70-50
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2015
ICS 49.140
English version
Space product assurance - Particles contamination monitoring
for spacecraft systems and cleanrooms
Assurance produit des projets spatiaux - Surveillance de la Raumfahrtproduktsicherung - Überwachung der
contamination aux particules des systèmes orbitaux et des Teilchenkontamination von Raumfahrzeugsystemen und
salles blanches Reinräumen
This European Standard was approved by CEN on 25 October 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
© 2015 CEN/CENELEC All rights of exploitation in any form and by any means reserved Ref. No. EN 16602-70-50:2015 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. 11
4 Particulate cleanliness monitoring requirements . 12
4.1 Cleanliness requirement specification overview . 12
4.2 Cleanliness and contamination control plan . 12
5 Quantitative method requirements . 13
5.1 Particles sampling from surfaces . 13
5.1.1 Tape lift method . 13
5.1.2 Direct deposition on silicon wafers . 16
5.1.3 Rinsing (direct or indirect) . 18
5.2 Volume sampling . 21
5.2.1 Particles sampling from filtered liquid samples . 21
5.2.2 Particles sampling from filtered gas samples. 23
5.2.3 Particles sampling with automatic counters . 25
5.3 Particles counting with microscope . 25
5.3.1 Introduction . 25
5.3.2 General requirements . 25
5.3.3 Apparatus . 26
5.3.4 Method . 26
5.3.5 Statistical sampling method . 27
5.3.6 Conversion of particle count to obscuration factor . 29
5.4 Particle fallout measurement (PFO) . 30
5.4.1 Introduction . 30
5.4.2 General requirements . 30
5.4.3 Apparatus . 30
5.4.4 Cleaning of the sensors . 31
5.4.5 Packing of PFO sensors. 31
5.4.6 Transportation of PFO sensors . 31
5.4.7 Exposure of PFO sensors . 32
5.4.8 Location of the PFO sensors . 32
5.4.9 Fixation of the PFO sensors . 33
6 Visual inspection method requirements. 34
6.1 Introduction . 34
6.2 General requirements . 34
6.3 Visual inspection of small items . 35
6.3.1 Visual inspection of small contamination sensitive items . 35
6.3.2 Visual inspection of small non sensitive contamination items . 37
6.4 In situ visual inspection of spacecraft . 38
6.4.1 Introduction . 38
6.4.2 Apparatus . 38
6.4.3 Method . 38
7 Quality assurance . 39
7.1 Records . 39
7.2 Report . 39
7.3 Acceptance criteria and nonconformance . 39
Annex A (normative) Request for particle contamination monitoring - DRD . 41
Annex B (normative) Particulate contamination monitoring procedure
(Work proposal) - DRD . 42
Annex C (normative) Report on particle contamination monitoring - DRD . 44
Annex D (normative) Report on visual inspection - DRD . 47
Bibliography . 50
Figures
Figure 5-1: Schematic for vacuum filtering apparatus . 23
Figure 5-2: Gas sampling schematics . 25
Figure 5-3: Mask example for statistical sampling . 28
Tables
Table 5-1: Ranges and average areas for a single particle in each range . 30
Foreword
This document (EN 16602-70-50:2015) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-50:2015) originates from ECSS-Q-ST-70-50C.
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 July 2015,
and conflicting national standards shall be withdrawn at the latest by July 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.
Introduction
Particulate contaminants can be hazardous to spacecraft in a number of ways
including failure of precision mechanisms, light absorption and scattering,
points of high local electric field and associated electrostatic discharge, and
noise on electrical contacts. It is therefore important to control, measure and
verify the particulate contamination levels on spacecraft systems and the
environments in which they reside, in order that an assessment can be made on
any hazards that may be present as a result of such contamination.
The objective of this standard is to ensure that the particle monitoring of
spacecraft systems and cleanrooms utilised in the production of such systems,
is carried out in an appropriate manner, and is controlled both in terms of the
precision of the measurements and the reproducibility of such measurements.
Scope
This standard defines the requirements and guidelines for the measurement of
particulate contamination on the surfaces of spacecraft systems and those of the
cleanrooms or other cleanliness controlled areas in which they reside.
This includes the measurement of particulate contamination that is present on
the spacecraft or cleanroom surfaces via the use of representative witness
samples placed in the vicinity of the spacecraft hardware, the direct
measurement of particulate contamination levels on surfaces of spacecraft
hardware from the direct surface transfer to adhesive tape-lift samples and
particulate contaminant levels within fluids used for the cleaning or rinsing of
such spacecraft system components and cleanroom surfaces. This standard also
defines the methods to be used for the visual inspection of spacecraft system
hardware for particulate contamination.
The measurement of airborne particulate contamination is not covered in this
standard and ISO 14644 “Cleanrooms and associated controlled environments”
is applicable in this case.
This standard does not cover particulate contamination monitoring for
spacecraft propulsion hardware which is covered in ECSS-E-ST-35-06.
This standard may be tailored for the specific characteristic 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-S
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.