ELECTRIC CIRCUIT VISUAL INSPECTIONS

COURSE OBJECTIVES DISCUSSION AND REVIEW OF ELECTRICAL INSPECTION TECHNIQUES AND METHODS

REVIEW FILES VIOLATION HISTORY PREVIOUS INSPECTIONS INPUT FROM PREVIOUS INSPECTOR

VISUAL OBSERVATIONS AT THE MINE POWER LINES GEN SET PLANT RUNNING OR NOT

PRE-INSPECTION CONFERENCE REVIEW (12028) DISCUSS TEST METHODS MAINTAINENCE PROCEDURES

INSPECTION PROCEDURES SELECT A STARTING POINT PIT MILL PLANT

PRIMARY CRUSHER LOOKING AT DUMP POINT GUARDS SAFE ACCESS OPERATORS BOOTH

ELECTRICAL ITEMS CABLE SIZE CABLE CONDITIONS CABLE CONNECTORS ? STRAIN RELIEF ? MOTORS (SIZE, MECHANICAL CONDITION, LOCATION

A-PROCEED TO THE MCC TO GATHER ELECTRICAL INFORMATION IF POSSIBLE INDICATOR LIGHTS BEING USED ? WHAT ARE THE STARTER TYPES? WHAT CONDITION ARE THEY IN? HOUSKEEPING FUSES LAYING AROUND, ETC.

NEC NEC , , , , A,B TABLES ,58, TABLE

MOTOR BRANCH CIRCUIT /SHORT CIRCUIT AND GROUND FAULT PROTECTION RATING OR SETTING FOR INDIVIDUAL MOTOR CIRCUITS NEC , ALSO REFER TO

DATE___/____/______ I.D. #_______________ EVENT #___________ POWER SUPPLY

CHECK MOTOR CONTROLLERS NEC ,98

FUSES OR CB RATINGS NEC ,58 TABLE 152

DISCONNECTING MEANS? NEC ,113

MOTOR BRANCH CIRCUIT CONDUCTORS NEC THRU 29

TAP CONDUCTORS NEC

FEEDER CONDUCTORS NEC , 62

C-GENERATOR SIZE

NAMEPLATE DATA NEC 445-3

SUBSTATION INSPECTIONS

ELECTRICAL ITEMS TO LOOK AT LOCKS SIGNS FENCE CONDITION & HEIGHT GROUNDING HOUSEKEEPING PERSONNEL AUTHORIZED TO ENTER HOW OFTEN DO THEY ENTER

SUBSTATION CHECKS CHECK FOR OBVIOUS HAZARDS BEFORE ENTERING LOOSE OR BROKEN SUPPORTS LOOSE CONDUCTORS DRY VEGETATION WITHIN 25 FOOT FIRE EXTINGUISHERS

CHECK TRANSFORMER CONNECTIONS PRIMARY - CONFIGURATION ? SECONDARY- CONFIGURATION WYE DELTA ?

OTHER PROTECTIVE DEVICES

1-CORDS (EXTENSION, LIGHT, WELDER LEADS) LABELING COVERS MISSING BUSHINGS/STRAIN RELIEFS OTHER ELECTRICAL INSPECTION ITEMS

PARTS TRAILERS EXITS IN ROOMS Clearance around panels

OUTDOOR EQUIPMENT HEATER PLUG-INS

CHECK ILLUMINATION MAY BE EVENING SHIFTS AT SOME OPERATIONS TO INCLUDE ALL WORKING AREAS

REVIEW LOCK OUT/TAG OUT PROCEDURES

ELECTRICAL VIOLATION HISTORY 2000 M/NM ONLY 63,624 TOTAL VIOLATIONS ISSUED 9,516 VIOLATIONS ISSUED (SURFACE) 1,157 VIOLATIONS ISSUED (UG)

ELECTRICAL VIOLATION HISTORY 2001 M/NM ONLY 54,837 TOTAL VIOLATIONS ISSUED 8,263 VIOLATIONS ISSUED (SURFACE) 719 ISSUED (UG)