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Electrical and Hazardous Area

Drilling Equipment Inspections

How often
SCR / VFD, MCC, traction motors, electrical and high line power: Category I daily, Category II weekly (Electrician). Doghouse purge fans: Driller daily and weekly, Electrician annual. Purge differential pressure gauge: calibrated annually. Cords: checked before use each shift.
Source: Nordic PM Plan 9.0 Table 6 and Category II criteria; Nordic PM Plan 5.0 Table 3; Nordic PM Plan Appendix B 11.9; OSHA 29 CFR 1910.334(a)(2)(i)
📋 Inspection Information
✅ Checklist

Answer every line. N/A means it does not apply today. Every Fail needs a note saying what is wrong.

Classified areas
Rig lights and fixtures rated for the classified area they are in
Source: API RP 54 (4th ed.) 7.12.5 (API RP 500 / 505); OSHA 29 CFR 1910.307
Lights in the derrick, tanks and rig floor enclosed and gasketed
Source: API RP 54 (4th ed.) 7.12.6
Junction boxes and enclosures closed
Source: Nordic R4 Rig Start-Up 20.0 step 3; OSHA 29 CFR 1910.307
Ventilation blowers rated for the area
Source: API RP 54 (4th ed.) 7.10.4
Doghouse and entry purge fans running; purge gauge shows positive pressure
Source: Nordic PM Plan 5.0 Table 3 (purge fans); NFPA 496
Doghouse purge differential pressure gauge calibrated within 1 year
Source: Nordic PM Plan Appendix B 11.9
Equipment and wiring
Shaker, agitator and pump motors securely mounted, properly wired and bonded
Source: Nordic R4 Rig Start-Up 6.0 steps 3 and 8; API RP 54 (4th ed.) 7.12.8
Cords and plugs visually checked before use this shift
Source: OSHA 29 CFR 1910.334(a)(2)(i)
Panels: unused openings closed; no missing covers
Source: OSHA 29 CFR 1910.305(b)(1)(ii)
Generator overload protection in service
Source: API RP 54 (4th ed.) 7.12.3
UPS and control-voltage batteries checked
Source: Nordic R4 Rig Start-Up 18.0 step 33; Nordic PM Plan 9.0 Table 6 (batteries)
Electrician Category II this week: control settings verified; no voltage swing over 15 to 20 VAC on SCR firing cards
Source: Nordic PM Plan 9.0 (Category II for SCR, MCC and electrical systems)
Equipment under electrical repair isolated, locked out, tagged and verified
Source: API RP 54 (4th ed.) 7.12.7; OSHA 29 CFR 1910.147
📝 Findings & Actions
AnthroSafe™ Field Driven Safety
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