PTW/Specific/TBT-PTW-016

Permit Types and When Each Applies

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Permits to work are formal documents that control high-risk activities on construction sites. Different types of permit exist for different hazards, and using the wrong permit or no permit at all can leave critical safety controls missing. This talk explains the main permit types used on UK construction sites and the circumstances in which each one must be obtained before work begins.

Key Hazards

High-risk work proceeding without the correct safety controls in place

Confusion between permit types leading to omitted precautions

Concurrent activities creating uncontrolled interface hazards

Workers unaware of active permits and their associated restrictions

Control Measures

Obtain the correct permit type before starting any high-risk activity listed in the site permit system.
Use a hot works permit for welding, cutting, grinding, and any activity producing sparks or open flame.
Use a confined space entry permit for any entry into a space with a foreseeable specified risk.
Use an excavation permit before any mechanical or hand digging where buried services may be present.
Use an electrical work permit for work on or near live electrical systems or during isolation.
Display the permit at the work location so all persons in the area are aware of the controls.
Ensure the permit issuer briefs all operatives on the precautions before they start work.
Hand back and cancel the permit formally at the end of each shift or when the task is complete.
Cross-reference multiple active permits if different high-risk activities overlap in the same area.

Remember

Always obtain the correct permit type before starting any high-risk activity on site
Hot works, confined spaces, excavation, and electrical work each require a specific permit
Display the permit at the work location so everyone in the area knows the controls
Hand back and cancel the permit at the end of each shift or when the work is complete
Cross-reference active permits when multiple high-risk activities overlap in the same area

Applicable Legislation: Health and Safety at Work etc. Act 1974 · CDM 2015 · Confined Spaces Regulations 1997 · Electricity at Work Regulations 1989

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