NB/T 11141-2023Nitrogen cooling unit used in coal mine (English PDF)
煤矿用氮气降温装置
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Issued by
NEA
Level / Type
Industry · Recommended
Issue date
February 6, 2023
Implementation date
August 6, 2023
Scope
NB/T 11141-2023 is the English-translated version of 煤矿用氮气降温装置.
NB/T 11141-2023 is the Chinese energy industry standard for nitrogen cooling devices used in coal mines. It specifies the model, classification and composition of the devices, their technical requirements, test methods and inspection rules, and the marking, packaging, transport and storage conditions.
Its references show the equipment involved: pressure vessels to the GB/T 150 series and TSG 21, heat exchangers to GB/T 151, piston and screw refrigeration compressors, condensing units, and the safety and environmental rules for refrigeration systems in GB/T 9237.
Coal mine safety is addressed through explosion-proof enclosures of the GB/T 3836 series, friction spark testing of metal materials to GB/T 13813, flame-retardant and antistatic polymer testing to MT/T 113, and mine cables. Issued on 6 February 2023, it has applied since 6 August 2023.
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Document preview — NB/T 11141-2023
National Standard of the People's Republic of China
- ICS
- 73.100
- Classification
- D 98
Issued by: National Energy Administration of the People's Republic of China
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Model, classification and composition
- 5 Technical requirements
- 6 Test method
- 7 Inspection rules
- 8 Labeling, packaging, transportation and storage
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 model, classification, composition, technical requirements, test methods, Inspection rules, marking, packaging, transportation and storage.
This document applies to nitrogen cooling devices for coal mines.
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.
GB/T 150.1 Pressure Vessels Part 1. General Requirements
GB/T 150.2 Pressure Vessels Part 2. Materials
GB/T 150.3 Pressure Vessels Part 3. Design
GB/T 150.4 Pressure Vessels Part 4. Manufacture, Inspection and Acceptance
GB/T 151 heat exchanger
GB/T 191 Packaging, storage and transportation icon marks
GB/T 3836.1 Explosive atmospheres Part 1. General requirements for equipment
GB/T 3836.2 Explosive atmospheres Part 2. Equipment protected by flameproof enclosure "d"
GB/T 3836.3 Explosive atmospheres Part 3. Equipment protected by increased safety type "e"
GB/T 3836.4 Explosive atmospheres Part 4. Equipment protected by intrinsic safety type "i"
GB/T 3836.5 Explosive atmospheres Part 5. Equipment protected by positive pressure enclosure "p"
GB/T 9237-2017 Safety and environmental requirements for refrigeration systems and heat pumps
GB/T 9969 General Rules for Instructions for Use of Industrial Products
GB/T 10079 Piston single-stage refrigerant compressor (set)
GB/T 10111 Generation of Random Numbers and Its Application in Product Quality Sampling Inspection
GB/T 13306 Signage
GB/T 13813 Friction spark safety test method and judgment rules for metal materials used in coal mines
GB/T 19410-2008 Screw refrigeration compressors
GB/T 21363-2018 Volumetric refrigeration compression condensing unit
AQ1043 Mining product safety sign identification
JB/T 4330-1999 Determination of Noise of Refrigeration and Air Conditioning Equipment
JB/T 7249-1994 Refrigeration Equipment Terminology
MT/T 113 General test methods and judgment rules for flame retardant and antistatic polymer products used in underground coal mines MT818 (all parts) coal mine cables
TSG21-2016 Safety Technical Supervision Regulations for Stationary Pressure Vessels
......
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
- GB/T 150.1Pressure vessels - Part 1: General requirements
- GB/T 150.2Pressure vessels - Part 2: Materials
- GB/T 150.3Pressure vessels - Part 3: Design
- GB/T 150.4Pressure vessels - Part 4: Fabrication, inspection and testing, and acceptance
- GB/T 151Heat exchangers
- GB/T 191Graphical symbols marking for handling and storage of packages
AQ1043 · MT/T 113
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Related Standards
GB/T 10079-2018 — Single-stage reciprocating refrigerant compressor (unit)
GB/T 10111-2008 — Generation of random numbers and procedures applied to sampling inspection for product quality
GB/T 13306-2011 — Plates
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NB/T 11141-2023
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