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GB/T 42051-2022Requirements for the inspection and maintenance of manned submersible structural parts (English PDF)

载人潜水器结构件检测维护要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

October 12, 2022

Scope

GB/T 42051-2022 is the English-translated version of 载人潜水器结构件检测维护要求.

GB/T 42051-2022 tells operators of manned submersibles how the structural parts are to be inspected and maintained once the craft is in service.

It covers the qualifications required of the personnel and of the testing body, the equipment, site and environment, the inspection intervals, and the items, methods and acceptance requirements for voyage, annual, intermediate and special inspections.

It then gives the handling measures for items that fail - separately for the manned cabin shell with its hatch cover and observation window, pressure tanks, ballast water tanks, buoyancy blocks, hoisting and tow-release gear, seals, fasteners and anti-corrosion devices - and the tests to be passed afterwards: seal check, hydrostatic external pressure, shallow depth and maximum working depth dives.

It does not apply to underwater passenger craft. Issued on 12 October 2022, it has applied since the same date.

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Document preview — GB/T 42051-2022

National Standard of the People's Republic of China

ICS: 47.020.10
Classification: U 17

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 General Requirements
4.1 Qualification of inspection and maintenance personnel
4.2 Qualification of Testing Institution
4.3 Inspection and maintenance of equipment and equipment
4.4 Inspection and maintenance site and environment
5 Detection and maintenance cycle
5.1 Inspection and maintenance system
5.2 Regulations of inspection and maintenance cycle
6 Inspection and maintenance items, methods and qualification requirements
6.1 Voyage inspection and maintenance items, methods and qualification requirements
6.2 Annual, intermediate and special inspection and maintenance items, methods and qualification requirements
6.3 Inspection and maintenance requirements for special situations
7 Handling measures for unqualified items
7.1 Treatment measures for unqualified items of all structural parts and accessories
7.2 Handling measures for unqualified items such as manned compartment shell and its hatch cover and observation window
7.3 Treatment measures for unqualified items of pressure tank (cabin)
7.4 Treatment measures for unqualified items of ballast water tanks (boxes)
7.5 Treatment measures for unqualified items of buoyancy block
7.6 Handling measures for unqualified items such as hoisting, dragging and releasing, etc
7.7 Treatment measures for unqualified items of seals
7.8 Treatment measures for unqualified items of fasteners or connectors
7.9 Treatment measures for unqualified items of anti-corrosion device
8 Test and inspection requirements after inspection and maintenance
8.1 Seal check test
8.2 Hydrostatic external pressure test
8.3 Shallow depth diving test
8.4 Maximum working depth diving test
9 Inspection and maintenance records and reports
Appendix A (normative) Overall roundness tolerance, local roundness tolerance and allowable value of rib local deviation

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.

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.

3.3 The supporting frame or member used for installing equipment and lifting on manned submersibles can withstand the submersible and its equipment on deck securing,

3.1 Structural parts

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]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 47466-2026|GB/T 11038-2026|GB/T 11875-2026|GB/T 13029.2-2026|GB/T 13029.3-2026|GB/T 13030.1-2026

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