NB/T 10753-2021Safety inspecting-testing specification of in-service belt conveyors for coal mines (English PDF)

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 basic requirements, inspection and inspection items and technical requirements, inspection and inspection for the safety inspection of belt conveyors in use in coal mines. Methods, detection and inspection rules and judgment rules.

This document is applicable to the in-use fixed roller-driven belt conveyors installed in the main transportation tunnels of coal mines (including underground belts that directly reach the ground).

Safety inspection and inspection of belt conveyors); belt conveyors in ground coal preparation plants and transportation corridors can refer to this document.

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 15663.5 Coal Mine Technical Terminology Part 5: Lifting Transportation

3 Terms and Definitions GB/T

15663.5 and the following terms and definitions apply to this document.

4 Basic requirements for testing and inspection

4.1 The belt conveyor and supporting electrical equipment to be inspected shall be products used in coal mines and operate normally.

4.2 When using instruments and equipment for testing and inspection, according to the requirements of the "Coal Mine Safety Regulations", the equipment used in the explosive environment should use EPLMa. protection level. Use non-coal mine-specific portable electrical measuring instruments, which should be used in locations where the methane concentration is below 1.0%, and real-time monitoring Use ambient methane concentration.

4.3 The accuracy of the testing and inspection instruments and equipment shall not be lower than those specified in Table 1, and shall be verified/calibrated and confirmed to be qualified.