This standard specifies safety requirements of excavation work in chemical manufactory and management of Excavation Safety Operation Certificate.
This standard is applicable to excavation work in chemical manufactory.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB 2811 Safety Helmet
GB 7059 Safety Requirements for Portable Wood Ladders
GB 12142 Safety Standard for Light-metal Extension Ladders
GB/T 13869 General Guide for Safety of Electric User
GB 16179 Guidelines for the Use of Safety Signs
JCJ 46 Technical Code for Safety of Temporary Electrification on Construction Site
3 Term and Definition
For the purpose of this standard, the following term and definition apply.
