Calculate Reasonable Worst-Case Spill (RWCS) Volume

§ 817.02(d)(1)(B); § 817.04(j)(4)(B):
The reasonable worst-case spill volume is the largest of the following:

1. The pipeline's maximum release time in hours (i.e. the time between pipeline rupture and discovery), plus the maximum shutdown response time in hours (based on historic spill data or in the absence of such historic data, the operator's best estimate), multiplied by the maximum flow rate expressed in barrels per hour (based on the maximum daily capacity of the pipeline), plus the largest line drainage volume after shutdown of the line section(s). Line section means a continuous run of pipe that is contained between adjacent pressure pump stations, between a pressure pump station and a terminal or break-out tank, between a pressure pump station and a block valve, or between adjacent block valves; or
2. The largest foreseeable discharge for a line section based on the maximum historic spill, if one exists, adjusted for any subsequent corrective or preventive action taken; or
3. If there are one or more breakout tanks, then the capacity of the single largest tank or battery of tanks within a single secondary containment system, adjusted for the capacity or size of the secondary containment system.