OSHA Accident Investigation · Summary #14527204

MISSISSIPPI POWER & LIGHT COMPANY, SOUTHHAVEN DIST

SOUTHHAVEN, MS· 1985-11-21T00:00:00

Event: VOLTAGE BACKFEED, ELEC PROTECT EQUIP, ELECTRICAL, ELECTROCUTED, LOCKOUT, E PTD, ELEC UTILITY WORK, TRANSFORMER
NAICS: 000000
Inspection type: Accident-driven
Activity number: #100372861
Employer profile: MISSISSIPPI POWER & LIGHT COMPANY, SOUTHHAVEN DIST
Summary number: 14527204
Report ID: 419400

Event description

ELECTRIC SHOCK - VOLTAGE BACKFEED IN TRANSFORMER

Investigation abstract

AN EMPLOYEE WAS WORKING ON A DEENERGIZED 110-KILOVOLT-AMPERE TRANSFORMER. THE TR ANSFORMER WAS SUPPLIED WITH 240 VOLTS TO POWER THE TAP CHANGER, AND THE VOLTAGE FED BACK THROUGH THE TRANSFORMER. THE EMPLOYEE WAS CONNECTING A METER TO THE HIG H AND LOW VOLTAGE SIDES OF THE TRANSFORMER WHEN HE MADE CONTACT WITH THE NEUTRAL AND PHASE CONDUCTORS, RESULTING IN HIS ELECTROCUTION.

Victim

#1 Fatality Age 37 M

Nature of injury
10

Part of body
4

Event type
13

Source
15

Occupation code
577

Human factor
1

Environmental factor
18

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.