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GB/T 42051-2022 English PDF

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GB/T 42051-2022: Requirements for the inspection and maintenance of manned submersible structural parts
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Basic data

Standard ID GB/T 42051-2022 (GB/T42051-2022)
Description (Translated English) Requirements for the inspection and maintenance of manned submersible structural parts
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard U17
Classification of International Standard 47.020.10
Word Count Estimation 18,181
Date of Issue 2022-10-14
Date of Implementation 2022-10-12
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 42051-2022: Requirements for the inspection and maintenance of manned submersible structural parts


---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.
Requirements for the inspection and maintenance of manned submersible structural parts ICS 47.020.10 CCSU17 National Standards of People's Republic of China Inspection and maintenance requirements for manned submersible structural parts structuralparts Published on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General Requirements 2 4.1 Qualification of inspection and maintenance personnel 2 4.2 Qualification of Testing Institution 2 4.3 Inspection and maintenance of equipment and equipment 3 4.4 Inspection and maintenance site and environment 3 5 Detection and maintenance cycle 3 5.1 Inspection and maintenance system 3 5.2 Regulations of inspection and maintenance cycle 3 6 Inspection and maintenance items, methods and qualification requirements 3 6.1 Voyage inspection and maintenance items, methods and qualification requirements3 6.2 Annual, intermediate and special inspection and maintenance items, methods and qualification requirements4 6.3 Inspection and maintenance requirements for special situations 4 7 Handling measures for unqualified items 4 7.1 Treatment measures for unqualified items of all structural parts and accessories 4 7.2 Handling measures for unqualified items such as manned compartment shell and its hatch cover and observation window 10 7.3 Treatment measures for unqualified items of pressure tank (cabin) 11 7.4 Treatment measures for unqualified items of ballast water tanks (boxes) 12 7.5 Treatment measures for unqualified items of buoyancy block 12 7.6 Handling measures for unqualified items such as hoisting, dragging and releasing, etc. 12 7.7 Treatment measures for unqualified items of seals 12 7.8 Treatment measures for unqualified items of fasteners or connectors 12 7.9 Treatment measures for unqualified items of anti-corrosion device 12 8 Test and inspection requirements after inspection and maintenance 12 8.1 Seal check test 12 8.2 Hydrostatic external pressure test 13 8.3 Shallow depth diving test 13 8.4 Maximum working depth diving test 13 9 Inspection and maintenance records and reports 13 Appendix A (normative) Overall roundness tolerance, local roundness tolerance and allowable value of rib local deviation 14

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 of Standardization Documents" drafted. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Submersible Standardization Technical Committee (SAC/TC306). This document is drafted by. China Ship Science Research Center. The main drafters of this document. Shen Yunsheng, Li Linglong, Jiang Xuyin, Liu Tao, Shi Dongchun, Chen Bin, Wang Xuan, Dai Zhiqian. Inspection and maintenance requirements for manned submersible structural parts

1 Scope

This document specifies the general requirements, inspection and maintenance cycle, inspection and maintenance items, methods and qualifications for the inspection and maintenance of manned submersible structural parts Requirements, handling measures for unqualified items, test and inspection requirements after inspection and maintenance, inspection and maintenance records and reports, etc. This document applies to the inspection and maintenance of structural parts during the operation and use of manned submersibles. The inspection and maintenance of other underwater device structural parts can be Refer to the implementation. This document does not apply to the inspection and maintenance of structural components of underwater passenger craft.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 9445 Qualification and Certification of Nondestructive Testing Personnel GB/T 13407 Submersible and Underwater Device Terminology GB/T 40073-2021 Test method for external pressure strength of submersible metal pressure shell NB/T 47013.2-2015 Nondestructive testing of pressure equipment - Part 2.Radiographic testing NB/T 47013.3-2015 Nondestructive Testing of Pressure Equipment Part 3.Ultrasonic Testing NB/T 47013.4-2015 Nondestructive Testing of Pressure Equipment Part 4.Magnetic Particle Testing NB/T 47013.5-2015 Nondestructive Testing of Pressure Equipment Part 5.Penetrant Testing NB/T 47013.7-2012 Non-destructive testing of pressure equipment - Part 7.Visual inspection China Classification Society, Rules for Classification of Diving Systems and Submersibles,.2018 Occupancy)

3 Terms and Definitions

Terms and definitions defined in GB/T 13407 and Rules for Classification of Diving Systems and Submersibles (2018) and the following terms and definitions apply to this document. 3.1 structuralparts A part of a manned submersible that can bear the load and has a certain shape and structure. Note. Including manned cabin shell (including hatch cover and its opening and closing mechanism, observation window and mounting bracket and other accessories), load-bearing frame (including lifting operating mechanism, tow release machine) Structure and other accessories), pressure tanks (chambers), ballast water tanks (boxes), buoyancy blocks and light shells, etc. 3.2 manned cabin shell mannedhul The manned submersible is used to house the crew and equipment, and can provide a pressure-resistant shell with a normal pressure and a sealed space. [Source. GB/T 13407-1992, 2.3.1, with modifications] 3.3 The supporting frame or member used for installing equipment and lifting on manned submersibles can withstand the submersible and its equipment on deck securing,

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