OSHA Accident Investigation · Summary #14428726

AZTEC WELL SERVICING CO.

IGNACIO, CO· 1988-02-12T00:00:00

Event: HEAD, WORK RULES, OIL WELL DRILLING, CRUSHED, HIGH PRESSURE, OIL RIG
NAICS: 000000
Inspection type: Accident-driven
Activity number: #101578060
Employer profile: AZTEC WELL SERVICING CO.
Summary number: 14428726
Report ID: 830500

Event description

OIL WELL WORKER KILLED WHEN HEAD CRUSHED BY DRILLING HEAD

Investigation abstract

EMPLOYEE #1 WAS TOLD BY THE DRILLER TO UNLOCK THE DRILLING HEAD BOLT THAT SECURE D THE DRILLING HEAD. EMPLOYEE #1 WENT TO THE CELLAR OF THE DRILLING RIG, LOOSENE D THE BOLT ON THE DRILLING HEAD DRIVE BUSHING ASSEMBLY AND PUSHED ONE SIDE OF TH E RING AWAY FROM HIM. HE THEN CRAWLED UP THE BLOW-OUT PREVENTER UNTIL HIS HEAD W AS BETWEEN THE DRILL FLOOR AND THE DRIVE BUSHING ASSEMBLY. PRESSURE IN THE WELL FORCED THE DRILLING HEAD ASSEMBLY UP, CRUSHING HIS HEAD BETWEEN THE DRILL FLOOR AND THE DRILLING HEAD ASSEMBLY. HE WAS KILLED.

Victim

#1 Fatality Age 28 M

Nature of injury
12

Part of body
13

Event type
1

Source
26

Occupation code
999

Human factor
10

Environmental factor
1

Task assigned
1

Codes shown verbatim from OSHA's accident-investigation database. A human-readable decoder is coming in a future release once the accident_lookup2 dictionary is loaded.