Incidenthistorical
PHMSA Report 19940235
MID - AMERICA PIPELINE CO (MAPCO) — Hazardous liquid — incident on 1994-09-14
Current as of 1994-09-14 Government source
RegulusPipeline researchRegulusPipeline researchPHMSA Report 19940235
Hazardous liquid incident in DAKOTA County, MN. Reported cause: MALFUNCTION OF CONTROL OR RELIEF EQUIPMENT. Reported consequences: 0 fatalities, 0 injuries, 500 L. P. G. released, $7,250 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: 19940235.
Operator ID: 12452.
Reported incident date: 19940914.
Location detail: T27N,R22W, SECTION 13, DAKOTA COUNTY, MINNESOTA.
Cause detail: AN EMPLOYEE AT A NEARBY FACILITY NOTIFIED THE AREA OPERATOR BY TELEPHONE THAT A TANK RELIEF VALVE WAS VENTING. CENTRAL DISPATCH WAS NOTIFIED AND BLOCKED IN THE TERMINAL. A POST INCIDENT INVESTIGATION DETERMINED THE RELIEF VALVE HAD MALFUNCTIONED,ACTIVATED PREMATURELY AND FAILED TO RESEAT. THE RELIEF VALVE WAS REPLACED.
PHMSA trend classification: significant incident, not serious.
PHMSA standardized cause: MATERIAL/WELD/EQUIP FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.
PHMSA indexed costs: $7,250 reported total cost, $5,428.739 in 1984 dollars, $13,369.313 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.
This material provides agency context. It does not replace binding regulatory text, and its legal effect depends on the underlying authority and facts.