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GB/T 12552-2023 English PDF

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Q: Should I purchase the latest version GB/T 12552-2023?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12552-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$149.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 12552-2023: Maximal safety depths for commercial diving
Status: Valid

GB/T 12552: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 12552-2023	149	Add to Cart	3 days	Maximal safety depths for commercial diving	Valid
GB/T 12552-1990	159	Add to Cart	2 days	Maximal safety depths for commercial diving	Obsolete

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Basic data

Standard ID: GB/T 12552-2023 (GB/T12552-2023)
Description (Translated English): Maximal safety depths for commercial diving
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: R53
Classification of International Standard: 03.220.40; 13.100
Word Count Estimation: 7,745
Date of Issue: 2023-11-27
Date of Implementation: 2024-06-01
Older Standard (superseded by this standard): GB/T 12552-1990
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 12552-2023: Maximal safety depths for commercial diving

---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.
ICS 03:220:40;13:100 CCSR53 National Standards of People's Republic of China Replace GB/T 12552-1990 Maximum safe depth for industrial diving Published on 2023-11-27 2024-06-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

PrefaceⅠ 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 air diving 1 5 Mixed Gas Diving 2 6 Saturation Diving 2 Reference 3

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 12552-1990 "Maximum Safe Depth for Industrial Diving": Compared with GB/T 12552-1990, except for structural adjustments In addition to general and editorial changes, the main technical changes are as follows: a) The terms "nitrox saturation diving", "helium saturation diving", "tour diving" and "jet recirculation helium oxygen heavy diving equipment diving" have been deleted: Terms and definitions (see 2:4, 2:5, 2:6, and 2:7 of the:1990 edition); b) Added the term and definition of “open diving bell” (see 3:4); c) Delete the content related to breathing oxygen during diving (see 3:1 of the:1990 edition); d) Changed the maximum safe depth requirements for self-contained air diving (see 4:1, 3:2:2 of the:1990 edition); e) The maximum safe depth requirements for surface supplied air diving have been changed (see 4:2, 3:2:1 of the:1990 edition); f) Added the maximum safe depth requirements for surface-supplied air diving using diving cages or open diving bells (see 4:3); g) Delete the maximum limit for nitrox diving, air circuit diving during helium saturation diving, and diving using jet regenerative helium heavy diving equipment: Safety depth requirements (see 3:3:1, 3:3:3 and 3:4:1 of the:1990 edition); h) Added the maximum safe depth requirements for mixed gas diving (see Chapter 5); i) Changed the maximum safe depth requirements for helium-oxygen saturation diving (see 6:3, 3:4:2 of the:1990 edition); j) Relevant content on basic requirements for diving gear and equipment configuration has been deleted (see Chapter 4 of the:1990 edition): This document is proposed and administered by the Ministry of Transport of the People's Republic of China: This document was drafted by: Shanghai Jiao Tong University Marine and Underwater Engineering Science Research Institute Co:, Ltd:, Shanghai Salvage Bureau of the Ministry of Transport, People's Republic of China PLA Naval Medical University, Guangzhou Diving School: The main drafters of this document: Xue Liqun, Huang Xin, Sun Jian, Zhang Guoguang, Xiao Xiaoling, Chen Ruiyong, Li Zhili, Chen Shuikai, He Xiuxia: This document was first published in:1990 and this is the first revision: Maximum safe depth for industrial diving

1 Scope

This document specifies the requirements for the maximum safe depth for air diving and mixed gas diving, as well as the maximum saturation depth for saturation diving: This document is applicable to industrial diving operations:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB 26123 Air diving safety requirements GB 28396 Safety requirements for mixed gas diving

3 Terms and definitions

The following terms and definitions as defined in GB 26123 and GB 28396 apply to this document: 3:1 industrial divingcommercialdiving commercial diving Diving operations that directly serve the national economy: Note: Excludes military, emergency rescue, public safety, leisure, sports, technology, scientific research and other diving: 3:2 saturationdiving saturationdiving A diving method in which a diver is continuously exposed to a certain depth or pressure, and the tissues of the body are saturated with inert gas, and then decompressed and released into the water: [Source: JT/T 1452-2022, 3:3:6, with modifications] 3:3 diving cage divingcage;divingbasket A frame-type cage-shaped vehicle that transports divers to and from the surface and underwater working locations: [Source: JT/T 1452-2022,3:2:20] 3:4 open diving bellopenbel wet diving bell wetbel A carrier equipment that transports divers to and from the surface and underwater working sites: The upper end has a compressed gas environment, and the divers can The part above the shoulders is placed in it, and the remaining part is exposed to the water: [Source: JT/T 1452-2022, 3:2:13, with modifications]

4 air diving

4:1 The maximum safe depth for self-contained air diving should be 30m: ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 12552-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 12552-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 12552-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 12552-2023_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.

Question 5: Should I purchase the latest version GB/T 12552-2023?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12552-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.