1 Scope
This standard specifies the safety requirements of excavation work in workplace for chemical engineering enterprises and the management of “Safety permit of excavation work” (hereinafter referred to as excavation work permit).
This standard is applicable to excavation work in chemical engineering enterprises’ workplaces.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 2811 Safety helmet
GB 7059 Safety requirements for portable wood ladders
GB 12142 Safety requirements for portable metal ladders
GB/T 13869 General guide for safety of electric user
JCJ 46 Technical code for safety of temporary electrification on construction site
3 Terminologies and Definitions
For the purposes of this document, the following terminologies and definitions apply.
3.1
Workplace
The area where chemicals are produced.
3.2
Excavation work
Work in which the depth into earth of digging, piling, drilling, probing and anchoring is more than 0.5m and the underground concealed facilities are possibly affected when using various construction machinery.
Foreword i
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Safety Requirements of Excavation Work
5 Management of “Excavation Work Permit”
Appendix A (Informative) Safety Permit for Excavation Work
