Minn. R. agency 105, ch. 1513, BASIC RULES, pt. 1513.0190
The maximum filling densities for nonrefrigerated containers are:
| Aboveground | Underground | ||
| (1) | Uninsulated | 56%* | 58% |
| (2) | Insulated | 57% | |
| (3) | DOT containers and cylinders shall be filled in accordance with DOT regulations. |
* This corresponds to 82 percent by volume at minus 28 degrees Fahrenheit, 85 percent by volume at 5 degrees Fahrenheit, 87.5 percent by volume at 30 degrees Fahrenheit, and 90.6 percent by volume at 60 degrees Fahrenheit.
The filling density for refrigerated storage tanks must be such that the tanks will not be liquid full at a liquid temperature corresponding to the vapor pressure at the start to discharge pressure setting of the pressure relief valve.
If containers are to be filled according to liquid level by any gauging method other than a fixed length dip tube gauge, each container must have a thermometer well and thermometer so that the internal liquid temperature can be easily determined and the amount of liquid and vapor in the container corrected to a 60 degrees Fahrenheit basis.
Minn. R. agency 105, ch. 1513, BASIC RULES, pt. 1513.0190
Statutory Authority: MS s 18C.121