DL/T 669-1999
Classified standard of working in the outdoor hot environment (English Version)
- Standard No.
- DL/T 669-1999
- Language
- Chinese, Available in English version
- Release Date
- 1999
- Published By
- Professional Standard - Electricity
- Status
- 2023-11
- Replace By
- DL/T 669-2023
- Latest
- DL/T 669-2023
DL/T 669-1999 history
- 2023 DL/T 669-2023 Classification of high-temperature operations in the power industry
- 1999 DL/T 669-1999 Classified standard of working in the outdoor hot environment
