Accident Report Detail

Accident Summary Nr: 14241210 - EMPLOYEE STRUCK BY OIL WELL CHOKE VALVE

Accident Summary Nr: 14241210 -- Report ID: 0627700 -- Event Date: 09/06/1984
Inspection Nr	Date Opened	SIC	NAICS	Establishment Name
1398130	09/12/1984	1389	0	The Western Company Of North America

Abstract: EMPLOYEE #1 WAS BLEEDING THE PRESSURE OFF THE WELLHEAD THROUGH A CHOKE VALVE WHICH WAS MOUNTED ON THE WELLHEAD CONTROL (TREE). THE CHOKE VALVE WAS OPENED JUST ENOUGH TO ALLOW PRESSURE TO ESCAPE AT THE UNION, WHICH WAS DISCONNECTED FROM THE SEPARATOR LINE. EMPLOYEE #1 INSTRUCTED ANOTHER WORKER TO RAISE THE WELLHEAD PROTECTOR OUT OF THE TREE. AS THE WELLHEAD PROTECTOR CUP WAS RAISED PAST THE CHOKE VALVE, THE CHOKE VALVE ASSEMBLY WAS PRESSURIZED BY PRESSURE FROM WITHIN THE TREE. THIS PRESSURE BUILDUP CAUSED THE CHOKE VALVE TO SPIN OFF THE MOUNTING NIPPLE. IT BLEW OUTWARD OFF THE TREE AND STRUCK EMPLOYEE #1 IN THE CHEST.

Keywords: CHEST, HIGH PRESSURE, VALVE, OIL WELL SERVICING, STRUCK BY, WELLHEAD, PRESSURE RELEASE

Employee Details
Employee #	Inspection Nr	Age	Sex	Degree of Injury	Nature of Injury	Occupation
1	1398130			Fatality	Fracture	Occupation not reported

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