Job Description
M&E Site Supervisor - HV Substations (GIS & SF6 Specialist)
Not sure what skills you will need for this opportunity Simply read the full description below to get a complete picture of candidate requirements.
Location: UK Wide (National Grid Infrastructure Sites)
Contract: Long-term programme of works (initial placement with extensions expected)
Day Rate: £450 CIS / Ltd (depending on experience)
Requirement: National Grid Authorisation / Person Ticket essential
Turner Lovell is partnering with a rapidly expanding specialist contractor operating within the UK high-voltage transmission sector. With a strong secured pipeline of National Grid substation works, they are now seeking an experienced M&E Site Supervisor with proven capability across GIS installations and SF6 gas systems.
This position offers the chance to join a business in a clear growth phase, delivering complex substation upgrades and new build works across critical UK energy infrastructure.
The successful individual will oversee mechanical and electrical site activities within HV substations, supporting delivery through installation, maintenance, refurbishment, and commissioning stages. A solid understanding of GIS equipment and SF6 handling procedures is a key requirement for this role.
A strong balance of electrical and mechanical site supervision experience within high-voltage environments is essential, alongside a clear understanding of compliance, safety, and environmental responsibilities associated with SF6 systems.
Key Responsibilities
Coordinate daily site operations, including direct labour, subcontractors, and specialist engineering teams
Oversee installation, servicing, and refurbishment works on Gas Insulated Switchgear (GIS)
Manage and supervise all SF6 gas-related activities, including:
Leak identification, reporting, and corrective actions
Routine gas testing, condition monitoring, and compliance verification
Ensure all works are delivered in accordance with National Grid procedures, permits, and operational standards
Maintain strict adherence to health, safety, and environmental regulations, with particular focus on SF6 control
Work closely with client representatives, HSE teams, engineers, and commissioning personnel on site
Track and report on site progress, productivity, and quality outputs to senior management
Maintain accurate site records, including SF6 handling data and inspection results
Assist in outage coordination, planning activities, and multi-discipline site delivery
Promote and enforce high standards of safety, quality, and environmental performance across all site operations
Requirements
Strong capability across both electrical and mechanical site supervision
Practical experience working with GIS systems and SF6 gas handling
Sound understanding of F-Gas legislation and environmental compliance xwwtmva obligations
Background within National Grid or comparable transmission environments
Ability to interpret technical drawings, schematics, and engineering documentation
Proven leadership experience managing multiple site teams and subcontractors
Strong working knowledge of HSE regulations and HV safe systems of work
Recognised site qualifications (SMSTS / SSSTS / CSCS / Safety Passport or equivalent)
National Grid authorisation or eligibility to achieve authorisation
Why This Role?
Work across a secured long-term pipeline of National Grid substation projects
Be involved in technically demanding GIS and SF6-focused works
Opportunity to develop within a business expanding its presence in the UK energy infrastructure market
If you're available for your next assignment, please apply or contact Hope Brown -
M&E Supervisor SF6 • Anderston, City of Glasgow, United Kingdom
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