GB/T 42595-2023Basic requirements for repair of pressure equipment (English PDF)
承压设备修理基本要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 23, 2023
Implementation date
May 23, 2023
Scope
GB/T 42595-2023 is the English-translated version of 承压设备修理基本要求.
This document specifies the classification of repairs to pressure equipment in service - boilers, pressure vessels and pressure piping - together with the basic requirements the repair has to meet and the work flow it follows.
The document applies to the repair of pressure-bearing equipment listed in the special equipment catalogue; the repair of pressure-bearing equipment outside that catalogue may follow it as a reference.
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Document preview — GB/T 42595-2023
National Standard of the People's Republic of China
- ICS
- 23.020.30
- Classification
- J 74
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Repair Category
- 5 Basic Requirements
- 6 Workflow
- 7 File Management
- Appendix A (Informative) Recognition Form of Environmental Factors in Repair Construction Operation
- Appendix B (Informative) Work Hazard Analysis Record Form for Repair Construction Work
- Reference
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.
1 Scope
This document specifies the classification, basic requirements and work flow for the repair of in-service pressure equipment such as boilers, pressure vessels and pressure piping.
This document is applicable to the repair of pressure-bearing equipment included in the special equipment catalogue, and the repair of pressure-bearing equipment not included in the special equipment catalogue can be implemented as a reference.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
NB/T 47013 (all parts) Non-destructive testing of pressure equipment
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Repair
All kinds of plans to restore the safety status and functions of pressure equipment after there are potential safety hazards, technical status deterioration or failure.
Repair and unplanned hidden danger repair, damage repair and accident repair and other activities.
3.2 Temporary repair
Repair the defects and damages of the pressure-bearing equipment to maintain the safe performance of the pressure-bearing equipment within a certain period of time.
Note: Temporary repair is only a temporary treatment measure for pressure-bearing equipment before overhaul.
3.3 Permanent repair
Repair the defects and damages of pressure-bearing equipment to make them meet the requirements of corresponding regulations and standards, and restore them to a good state.
3.4 Welding repair welded repair
Welding repair method is adopted for pressure equipment.
Note: Welding repair methods include digging, welding casing, surfacing welding, strengthening welding and replacing pipe sections and fittings, etc.
3.5 Mechanical repair
Use mechanical (non-welding) repair methods for pressure equipment.
NOTE: Methods of mechanical repair include replacement of pressure-containing components, freeze plugs, thread repair, mechanical clamps, pipe straightening, fastener repair in concrete, and bolt tightening. Solid etc.
3.6 Non-metal repair
Repair methods for the repair of non-metallic parts of pressure equipment.
Note: Non-metal repair methods include non-metal composite material repair and non-metal lining repair of pipelines, etc.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.
Referenced standards
Normative references
NB/T 47013
Similar standards
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Related Standards
NB/T 47013.1-2015 — Nondestructive testing of pressure equipments - Part 1: General requirements
NB/T 47013.10-2010 — Nondestructive testing of pressure equipments - Part 10: Ultrasonic time of flight diffraction technique
NB/T 47013.10-2015 — Nondestructive testing of pressure equipments - Part 10: Ultrasonic time of flight diffraction technique
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