LV Authorised Person

Job Purpose

The LV Authorised Person (AP) is responsible for the safe operation, control, isolation, and management of Low Voltage (LV) electrical systems within a highways tunnelling environment. The role ensures compliance with electrical safety rules, project specifications, and statutory regulations, safeguarding personnel and infrastructure during installation, commissioning, maintenance, and fault-finding activities.

Key Responsibilities

1. Electrical Safety & Authorisation

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  Act as the designated LV Authorised Person under the project Electrical Safety Rules.
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  Issue, control, and cancel Permits-to-Work and Certificates of Isolation for LV systems.
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  Ensure safe isolation, earthing, and reinstatement of LV electrical equipment.
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  Maintain and manage LV switching schedules and system diagrams.

2. Operation of LV Systems

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  Control and operateLV distribution systems including:
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    Tunnel lighting and emergency lighting systems
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    Ventilation plant supplies
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    Pumping stations and drainage systems
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    Fire detection and life safety systems
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    Traffic management and tunnel control systems
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  Carry out switching operations in accordance with approved procedures.
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  Respond to electrical faults and emergency situations.

3. Compliance & Regulation

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  Ensure works comply with the current edition of the Institution of Engineering and Technology Wiring Regulations (BS 7671).
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  Operate in accordance with guidance from the Health and Safety Executive and project-specific safety rules.
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  Support compliance with relevant UK legislation including Electricity at Work Regulations 1989.
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  Participate in audits and safety inspections.

4. Documentation & Records

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  Maintain accurate LV switching logs and isolation records.
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  Review and approve Risk Assessments and Method Statements (RAMS) for LV activities.
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  Ensure up-to-date single-line diagrams and asset registers are maintained.
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  Contribute to commissioning documentation and handover records.

5. Supervision & Coordination

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  Provide technical guidance to electricians and supervisors.
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  Ensure all personnel working on LV systems are competent and authorised.
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  Coordinate with civil, mechanical, and tunnel operations teams.
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  Support commissioning and integration of tunnel M&E systems.

Qualifications & Certifications (Essential)