NB/T 11448-2023Emulsion proportioning device for mine (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 for standardization documents" Drafting.

1 Scope

This document specifies the product model and classification, technical requirements, test methods, inspection rules and markings, packaging Packing, transportation and storage.

This document applies to emulsion proportioning devices (referred to as devices) used in workplaces such as underground coal mines.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

GB/T 191 Pictorial markings for packaging, storage and transportation

GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2: Test methods Test A. Low temperature

GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2: Test methods Test B. High temperature

GB/T 2423.4-2008 Environmental testing for electric and electronic products Part 2: Test methods Test Db. Cyclic damp heat (12h 12h cycle)

GB/T 2423.5-2019 Environmental testing Part 2: Test method Test Ea and guidance. Impact

GB/T 2423.10-2019 Environmental testing Part 2: Test methods Test Fc. Vibration (sinusoidal)

GB/T 2829-2002 Periodic inspection sampling procedures and tables (applicable to the inspection of process stability)

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 "e"

GB/T 3836.4 Explosive atmospheres Part 4: Equipment protected by intrinsic safety type "i"

GB/T 4208 Enclosure protection grade (IP code)

GB/T 9969 General principles for instructions for use of industrial products

GB/T 10111 Generation of random numbers and their application in product quality sampling inspection

GB/T 12173 General electrical equipment for mining

AQ1043 Mining Product Safety Signs and Labels

MT/T 210-1990 Basic test methods for electrical and electronic products used for communication, detection and control in coal mines

MT/T 899 Information transmission device for coal mines

3 Terms and definitions

The following terms and definitions apply to this document.