GB/T 42047-2022 English PDF

US$469.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42047-2022: Determination of off gassed products from materials and assembled articles in a pressurized cabin of manned spacecraft
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42047-2022	469	Add to Cart	4 days	Determination of off gassed products from materials and assembled articles in a pressurized cabin of manned spacecraft	Valid

Similar standards

GB/T 43223   GB/T 32453   GB/T 32307   GB/T 42046   

Basic data

Standard ID: GB/T 42047-2022 (GB/T42047-2022)
Description (Translated English): Determination of off gassed products from materials and assembled articles in a pressurized cabin of manned spacecraft
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V71
Classification of International Standard: 49.025
Word Count Estimation: 22,299
Date of Issue: 2022-10-12
Date of Implementation: 2022-10-12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42047-2022: Determination of off gassed products from materials and assembled articles in a pressurized cabin of manned spacecraft

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of offgassed products from materials and assembled articles in a pressurized cabin of manned spacecraft ICS 49.025 CCSV71 National Standards of People's Republic of China Outgassing of materials and components in the sealed cabin of manned spacecraft Product determination method articles, MOD) Released on 2022-10-12 2022-10-12 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Test operator health and safety 2 5 Test conditions 2 6 Instruments and materials 3 7 Test sample 5 8 Test preparation 6 9 Test procedure 6 10 Measurement accuracy 7 11 Test report 7 Appendix A (informative) This document corresponds to a list of structure numbers corresponding to ISO 14624-3.2005 8 Appendix B (informative) Technical differences between this document and ISO 14624-3.2005 and their reasons 10 Appendix C (Informative) Qualification and Certification of Test Facilities 12 Appendix D (Informative) List of Maximum Allowable Concentrations of Compounds in Sealed Chambers of Manned Spacecraft 13 Reference 17

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document is modified to adopt ISO 14624-3.2005 "Safety and compatibility of materials for aerospace systems - Part 3.Materials and components Determination of outgassing products". Compared with ISO 14624-3.2005, this document has more adjustments in structure. Comparison overview of structure number changes between two files See Appendix A for the table. Compared with ISO 14624-3.2005, this document has more technical differences, and vertical A straight single line (︱) is marked. See Appendix B for a list of these technical differences and their causes. The following editorial changes have been made to this document. ---In order to be consistent with our country's technical standard system, the name of this document is changed to "Materials and Outgassing Products of Parts and Components in the Sealed Chamber of Manned Spacecraft test methods"; --- Change the "authority with jurisdiction" in the full text of ISO 14624-3.2005 to "user"; --- Deleted the note in 3.4 of ISO 14624-3.2005 terms and definitions (see 3.4); --- Deleted "Appendix C Assessment Guidelines" in ISO 14624-3.2005; ---Modify the certification in ISO 14624-3.2005 to adopt the corresponding national National standards GB/T 27025 and GB/T 27043 (see C.1); --- Deleted the relevant content of the International Laboratory Accreditation Organization (ILAC) in ISO 14624-3.2005, and will refer to ISO /IEC 17011 Revise to the corresponding national standard GB/T 27011 (see C.2); --- Modify the 7d maximum allowable concentration of 23 toxic and harmful gases given in Appendix B of ISO 14624-3.2005 to The maximum permissible concentration of toxic and harmful gases for 39 kinds/types of toxic and harmful gases 7d, 30d, and 180d (see Table D.1); --- Added 56 kinds of toxic and harmful gases in JSC-20584.2020 given by NASA Toxicology Team 1h, 24h, 7d, 30d, 180d and 1000d the maximum allowable concentration of compounds in the airtight compartment of the manned spacecraft (see Table D.2); --- Adjusted references. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is under the jurisdiction of the National Manned Spaceflight Standardization Technical Committee (SAC/TC570). This document is drafted by. Beijing Institute of Satellite Environmental Engineering, Beijing Institute of Space Science and Technology Information, Harbin Institute of Technology (Shenzhen), Chinese Academy of Sciences Space Application Engineering and Technology Center, Beijing Space Vehicle Overall Design Department, Shanghai Hanhai Testing Technology Co., Ltd., Beijing Oriental Institute of Metrology and Testing. The main drafters of this document. Shen Zicai, Yin Yumei, Mao Xin, Zuo Pingbing, Liu Yue, Han Haiying, Zhang Lantao, Ji Qizheng, Li Zhenyu, Zhang Qing, Jia Ruijin, Peng Jin, Li Gaofeng.

Introduction

Data obtained using the assay methods specified in this document can be used for toxicological risk assessment of humans and for obtaining other information, If samples are taken at equal intervals, the outgassing rate information of materials and components in the sealed cabin can be obtained. Outgassing of materials and components in the sealed cabin of manned spacecraft Product determination method

1 Scope

This document specifies the determination method for the composition and concentration of the gas products of the internal materials and parts of the airtight compartment of the manned spacecraft. This document is applicable to the screening test of materials and components in the airtight cabin of manned spacecraft.

2 Normative references

This document has no normative references.

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 component assembledarticle An element or combination of elements. 3.2 offgassed products The release of organic or inorganic gases from materials or components. 3.3 vent gas offgassing The process by which gaseous products are released from a liquid or solid material into the surrounding atmosphere. 3.4 Spacecraft maximum allowable concentration The maximum concentration of outgassing products allowed in the habitable or working area of a spacecraft for a specific mission. 3.5 Comparison test roundrobin testing A test in which the same material is tested in different test facilities to compare the test results. 3.6 The ratio of the standard deviation of each outgassing component to the total concentration of outgassing components in replicate samples of standard material. NOTE. For actual samples, the expected test results and mean relative standard deviation for outgassing product concentrations are close to 50%. Standard deviation s and relative standard deviation mean The ratio As is determined by formula (1) and formula (2) respectively. s= i=1 xi-x 2 n-1 (1) In the formula. s --- standard deviation; xi---the average concentration of a single outgassing component; ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42047-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42047-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42047-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42047-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.