MID - AMERICA PIPELINE CO (MAPCO) — Hazardous liquid — incident on 2001-01-20

Hazardous liquid incident in MCPHERSON County, KS. Reported cause: INCORRECT OPERATION BY OPERATOR PERSONNEL. Reported consequences: 0 fatalities, 0 injuries, 877 PROPANE released, $0 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20010021.

Operator ID: 12452.

Reported incident date: 20010120.

Location detail: CONWAY DEHYDRATION, REGENERATION, AND SEPARATION PLANT.

Cause detail: AS A PART OF THE DEHYDRATION REGENERATION SYSTEM A VESSEL DESIGNED AS A PROPANE/WATER SEPARATOR IS INCLUDED IN THE FINAL REGEN FLOW AFTER THE HEATED PROPANE HAS FLOWED THROUGH THE DEHY REMOVING THE WATER FROM THE BED. THE WATER IS ALLOWED TO SETTLE OUT IN THIS VESSEL AND COLLECTS IN THE BOOT OF THE VESSEL THAT HAS A DRAIN LINE FROM IT TO THE WATER CONTAINMENT PIT. THIS INCIDENT WAS THE RESULT OF THE 1" BALL VALVE ON THE DRAIN LINE INADVERTENTLY BEING OPENED AND REMAINING SO FOR SEVERAL HOURS. OPERATIONAL MEASURES HAVE BEEN TAKEN TO PREVENT REOCCURRENCE.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: INCORRECT OPERATION — INCORRECT OPERATION.

PHMSA indexed costs: $0 reported total cost, $0 in 1984 dollars, $0 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.