Minimum rest time after initial loading before ullage measurements, per ISGOTT: allow 30 min for static-electricity decay before any non-bonded measuring tape is lowered.
Formula
$$ t_\text{rest} = \max(30, 30 \cdot v / 1 \text{ m/s}) \text{ if non-bonded} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $v$ | Initial filling velocity | m/s | procedure |
| $t_\text{rest}$ | Rest time before non-bonded measurement | min | ISGOTT |
Sources
- OCIMF ISGOTT 6th Ed., Ch.11 - Static electricity.