Excavation & Digging work permit Check List | Permit to work | PTW

Part-10: Excavation & Digging work permit Check List | Permit to work | PTW

Checklist for Digging & Excavation work permit:

1. Drawing of airline, cable, waterline, etc checked (Yes/No)
2. Isolation of power supply from electrical cable (Yes/No)
3. Trenches, if ay, covered or backfilled progressively (Yes/No)
4. Spotters placed to guide mobile equipment (Yes/No)
5. Sufficient material available to cordon off the excavated area to prevent mobile equipment & personnel from falling (Yes/No)
6. Inside temperature is at the room temperature (Yes/No)
7. Presence of toxic/flammable gases checked (Yes/No)
8. Proper access to and exit from work place provided (Yes/No)
9. Shoring has been inspected and found OK (Yes/No)
10. Loose tools, spoil heaps or material kept more than 2.0 mts away from the edge of the excavation (Yes/No)

The greatest risk in an excavation is a cave-in. Employees can be protected through sloping, shielding, and shoring the excavation. A competent person is responsible to inspect the excavation. Other excavation hazards include water accumulation, oxygen deficiency, toxic fumes, falls, and mobile equipment.

The Issuer can issue a Permit to Dig to cover a 'scheme of work' involving more than one excavation. This can only occur on a scheme managed and controlled by the same Requestor.

OSHA requires employers to provide ladders, steps, ramps, or other safe means of egress for workers working in trench excavations 4 feet (1.22 meters) or deeper. The means of egress must be located so as not to require workers to travel more than 25 feet (7.62 meters) laterally within the trench.

Excavation is the process of moving earth, rock or other materials with tools, equipment or explosives. It includes earthwork, trenching, wall shafts, tunneling and underground. ... Some of the different processes used in excavation include trenching, digging, dredging and site development.

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