PDF
GB 40880-2021 Active
GB 40880-2021 Specification for coal mine gas classification identification
Abstract
This document specifies the classification of gas grades in coal mines, general requirements, appraisal basis, appraisal indicators and their measurement methods, determination rules, and the content of appraisal reports. This document is applicable to the classification appraisal of high-gas mines, the appraisal of coal and gas (carbon dioxide) outburst mines and coal seams, and the appraisal of rock and carbon dioxide (gas) outburst mines and rock layers.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB 40880-2021 |
| CCS | Health, safety, and labor protection |
| ICS | Occupational safety and industrial hygiene |
| Implement Date | 2022-05-01 |
Price
$ 53
Subtotal
$ 53
Tax
$ 0.00
Order Total (incl. tax)
$ 53