BUR/Detection/TBT-BUR-012

Permit to Dig Process

Buried Services & Utilities › Detection › Permit to Dig Process

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A permit to dig is a formal document authorising excavation work after hazards have been identified and controlled.
HSG47 recommends a permit to dig system as best practice for all ground disturbance operations.
The permit ensures that service plans have been reviewed and services located before digging commences.
It records the detection equipment used, services found, agreed safe digging methods, and exclusion zones.
The permit must be issued by a competent person and accepted by the operative carrying out the dig.
All permits have a defined validity period and must be re-issued if conditions or location change.
The permit should reference the service plan drawing number and CAT/Genny survey results.
Mechanical excavation restrictions within defined distances of known services must be specified.
Emergency procedures for a service strike must be documented and understood before the permit is issued.
A permit to dig does not guarantee the area is free of services — it documents the precautions taken.

Prevent service strikes	A formal permit system ensures every excavation is planned with service avoidance measures in place.
Legal compliance	HSG47 and CDM 2015 require safe digging procedures — a permit system provides documented evidence of compliance.
Protect workers	Striking a gas main, electrical cable, or high-pressure water main can cause fatal injuries instantly.

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See also: Safe Digging Practices (HSG47) | CAT and Genny Safe Use

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