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Occupational Safety and Health Administration OSHA

Inspection Detail

Inspection: 1571777 - Blackhawk Services Inc

Inspection Information - Office: Denver

Nr: 1571777Report ID: 0830500Open Date: 05/08/1984

Blackhawk Services Inc
Open Field Near County Roads 31 & 46
Gilchrest, CO 80623
Union Status: NonUnion
SIC: 1389/Oil and Gas Field Services, Not Elsewhere Classified
Mailing: 21588 Weld County Road 52, Greeley, CO 80631

Inspection Type:Accident
Scope:Partial Advanced Notice:N
Ownership:Private
Safety/Health:Safety Close Conference:05/25/1984
Close Case:06/20/1984

Related Activity:TypeIDSafetyHealth
 Accident360559041    

Violation Summary
Serious Willful Repeat Other Unclass Total
Initial Violations 1 1
Current Violations 1 1
Initial Penalty $0 $0 $0 $0 $0 $0
Current Penalty $0 $0 $0 $0 $0 $0
FTA Amount $0 $0 $0 $0 $0 $0

Violation Items
# ID Type Standard Issuance Abate Curr$ Init$ Fta$ Contest LastEvent
  1. 01001 Other 19040002 A 05/29/1984 06/13/1984 $0 $0 $0 -

Accident Investigation Summary
Summary Nr: 14506257Event: 05/04/1984Employee Struck By Piece Of Exploding Valve
EMPLOYEE #1 WAS STANDING AT THE SIDE OF A GAS WELLHEAD, APPARENTLY OPENING THE BALL VALVE IN THE CASING LINE. A CHECK VALVE IN THE FLOW LINE EXPLODED. A LARGE PIECE OF THE EXPLODING VALVE ENTERED EMPLOYEE #1'S CHEST, INFLICTING FATAL INJURIES. FOR REASONS UNKNOWN TO ANYONE, EMPLOYEE #1 HAD THE ENTIRE WELLHEAD SYSTEM, FROM THE WELL TO THE SEPARATOR, CLOSED. HE THEN OPENED THE CASING LINE BELL VALVE, ALLOWING GAS TO FLOW INTO THE SYSTEM THROUGH THE CASING LINE AND BUILD UP GAS PRESSURE. APPARENTLY THE BACK PRESSURE AGAINST THE FLOW LINE CHECK VALVE CAUSED THE VALVE TO EXPLODE. THE VALVE WAS FOUND TO BE RATED AT 300 POUNDS WORKING PRESSURE (450 POUNDS TEST). IT WAS BEING USED IN A SYSTEM WITH A WORKING PRESSURE OF UP TO 2,000 POUNDS.
Keywords: chest, gas well, check valve, explosion, high pressure pipe, high pressure, wellhead, flying object
Inspection Degree Nature Occupation
1 1571777 Fatality Puncture Occupation not reported

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