Inspection Detail

Inspection: 640144 - Phillips Petroleum Company - Tioga Gas Plant

Inspection Information - Office: Bismarck Area Office

Inspection Nr: 640144

Report ID: 0830300

Date Opened: 11/25/1985

Site Address:
Phillips Petroleum Company - Tioga Gas Plant
One Mile East Of Tioga
Tioga, ND 58852

Mailing Address:
P. O. Box 549, Tioga, ND 58852

Union Status: NonUnion

SIC:2911

NAICS: 0

Inspection Type: Accident

Scope: Partial

Advanced Notice: Y

Ownership: Private

Safety/Health: Safety

Close Conference: 11/28/1985

Emphasis:

Case Closed: 07/14/1986

Related Activity
Type	Activity Nr	Safety	Health
Accident	360633523

Violation Summary
Violations/Penalties	Serious	Willful	Repeat	Other	Unclass	Total
Initial Violations	2					2
Current Violations	2					2
Initial Penalty	$1,280	$0	$0	$0	$0	$1,280
Current Penalty	$1,280	$0	$0	$0	$0	$1,280
FTA Penalty	$0	$0	$0	$0	$0	$0

Violation Items
#	Citation ID	Citaton Type	Standard Cited	Issuance Date	Abatement Due Date	Current Penalty	Initial Penalty	FTA Penalty	Contest	Latest Event	Note
1.	01001	Serious	5A0001	01/17/1986	01/24/1986	$640	$640	$0		-
2.	01002	Serious	5A0001	01/17/1986	06/23/1986	$640	$640	$0		-

Investigation Summary

Investigation Nr: 14535439

Event: 11/21/1985

One employee killed when pressure vessel explodes

An unfired pressure vessel with a 6,500 gallon liquid capacity, which was designed and manufactured to be used for propane gas storage, was being used at this natural gas processing refinery as an accumulator. The tank was subjected to forces greater than those for which it was designed, and it developed severe stress cracks. The tank, operating at approximately 250 psi, failed and exploded. Large quantities of flammable vapors from liquid hydrocarbons were released and ignited, causing a second explosion. Employee #1 was killed by the explosion. A large portion of the refinery was destroyed.

Keywords: FLAMMABLE VAPORS, PRESSURE VESSEL, WORK RULES, FIRE, NATURAL GAS, EQUIPMENT FAILURE, EXPLOSION, HIGH PRESSURE, REFINERY

Investigated Inspection
#	Inspection	Age	Sex	Degree of Injury	Nature of Injury	Occupation
1	640144			Fatality	Other	Occupation not reported

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