Patent ID: 11964816
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 5:
6. A method comprising:
installing a drain nozzle on a cleanout door, such that a centerline of the drain nozzle is offset from an edge of the cleanout door;
after installing the drain nozzle on the cleanout door, installing the cleanout door on an outer wall of a sulfur storage tank comprising a bottom plate, such that the edge of the cleanout door abuts the bottom plate of the sulfur storage tank;
performing a hydrostatic test on the sulfur storage tank;
after performing the hydrostatic test, draining fluid from the sulfur storage tank using a pump until a liquid level within the sulfur storage tank reaches a first liquid level; and
after draining fluid from the sulfur storage tank using the pump, gravity draining fluid from the sulfur storage tank through the drain nozzle.