STANDARD OPERATING PROCEDURE

OBJECTIVE:

To establish a procedure for operation and maintenance of Tap-off box.

POLICY:

The Tap-off box operation shall be carried out in safe, smooth, trouble free without affecting the occupants with reduced down time.

RESPONSIBILITY:

Shift Engineer

PROCEDURE:

· Put OFF the supply where you want to carry out the work.

· Make sure LOTO device should applied for energy source.

· Provide a board “Men at work do not switch on”.

· Ensure you are standing on an insulating rubber mat/ Electrically insulated surface required

· Make sure all PPE’s are equipped while working.

· Have proper tools like insulated plier, test lamp, tester, wire stripper, and fuse puller.

· Ensure conductor is dead before handling it.

· Inspect locking devices for signs damage or worn.

· Clean thoroughly, vacuum, and full visual inspection of exterior and interior of all LV Panel/switchboards.

· Verify control circuit fuse rating and continuity.

· Check and torque test bolted electrical connections as necessary to specified levels.

· Visual inspection for signs of overheating or deterioration take thermography if required.

· Final visual inspection to insure all clear after work completed.

· Inspection of all panels for paint work damage and signs of corrosion.

After Carry out the maintenance.

· Before charging the supply, ensure that no tools are left inside the panel.

· Close the doors of the panel.

· Leave the workplace only after satisfactory trial.

· Frequency for preventive maintenance of the low-tension panel is once in a six month.

· Ensure breaker in proper position inside the panel.

· Check incoming voltage between R-Y, Y-B and B-R on the voltmeter provided, it should be 415 to 430 or 230 to 240 volts wherever applicable.

· At any job motto should be safety first.

· In case of any major problem, inform the Facility Manager immediately.

REVISION GUIDE:

Any change in the systems will need a change in the SOP.

Standard operating procedures