Tank-freeing (hot work) procedure card: Permit-to-work + gas-free test.
Formula
$$ \text{Op} = \text{Tank-freeing (hot work)} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Tank-freeing (hot work)$ | Permit-to-work + gas-free test | - | ISGOTT 6 |
Sources
- OCIMF ISGOTT 6th Ed..