Authorised Person

Mercury is the European leader in construction solutions. We build and manage complex engineering & construction projects for the world's leading corporations. Our solutions help deliver technologies and life changing advancements that connect people, communities, and businesses, giving them the power to achieve incredible things. Our people have the courage to be innovative. Their determination and sharp focus enable us to deliver with certainty, time and time again. We deliver our clients' visions through leading edge construction solutions across multiple sectors, including Enterprise Data Centres, Advanced Technology & Life Sciences, Hyperscale Data Centres, Fire Protection. Mercury places people at the heart of what we do, providing challenging opportunities to develop within a great team in a supportive environment that allows them to reach their full potential.

Location: Dublin, Ireland

• Become familiar with, comply with and enforce through permitting and auditing, the relevant Mercury SOPs including but not limited to Control of Hazardous Energies Procedure and Operating and Energisation Procedures for Work on LV & MV Systems.
• Understand the need for and adherence to the Permit to Work and Lock-Out Tag-Out Procedures and follow safe working practices.
• Understand Mercury site specific ESSOW (Electrical Safe System of Work).
• Review and understanding of Sub-Contractor COHE (Control of Hazardous Energies).
• Review and approve Sub-Contractor Electrical RAMS.
• Ensure all works are conducted in accordance with client directives.
• Operational control of LOTO systems and safe switching (Energisation/Isolations) during commissioning.
• Ensure warning signs are in place and checked at regular intervals.
• Report any electrical incidents to SAP and Energy Marshall.
• Ensure segregation of hazardous areas and the correct use of Electrical PPE.
• Complete any training deemed necessary by Mercury in the jurisdiction.
• Identify potential hazards and implement mitigation measures.
• Secure areas under permit control.
• Assist Senior Authorised Persons to remain compliant in internal audits (Self-Assessment COHE Audit and Audit for inspection of temporary electrics).
• Be conversant with Arc flash mitigation including PPE selection, condition and maintenance.
• Authorise Energisation and Isolation Requests once criteria are met for the nominated voltage range.
• Follow the instruction of the Senior Authorised Person.
• If not already evidenced, provide proof of successful completion of colour vision test.

• Be a qualified electrician awarded the National Craft Certificate or equivalent; verified by Naric, or have a suitable electrical award equivalent to Level 6 or higher on the National Framework of Qualifications.
• Understand, interpret and work from project drawings such as SLDs, Wiring Diagrams, schematics, etc.
• Understand EN and local code regulations and stay conversant with local jurisdictional electrical regulations.
• Complete a recognised course in Verification, Testing and Certification where required by jurisdiction.
• Inspect, commission, troubleshoot, and operate control systems and power circuits and switchgear.
• Perform commissioning duties including MCCs, VSDs, distribution panels, motors, lighting and small power circuits.
• Understand policies and work methods related to commissioning electrical equipment and related duties.
• Interpret project documentation such as Punchlist/As Built procedures and Vendor Manuals.
• Perform testing (Insulation Resistance, Point to Point, grounding) with appropriate equipment and ensure pre-connection/dead tests are compliant.
• Take live readings post-energisation and record on energisation request form; ensure post-connection/live test results are compliant.
• Perform Live Dead Live testing as required; conduct panel inspections and complete Pre Energisation Checklists.
• Execute switching schedules/notes post-approval from SAP and Energy Marshall; perform safe energisations, isolations and functional switching.
• Ensure correct tagging for equipment awaiting energisation.
• Support the Commissioning process from Level 1 through Level 5.
• Enforce Electrical Permit to Work system; approve/cancel/close electrical safety permits for the nominated voltage range (Low/ Medium).
• Maintain positive working relationships with site supervisors, peers and vendors; review commissioning processes; assist in electrical incident investigations.
• Monitor PPE and safety equipment; advise on calibration or replacement as required.
• Have completed a recognised MV/HV switching course if appointed as MV Authorised Person; minimum three years on MV systems.

• Manage Mercury's "In Progress" snagging system to ensure safe and controlled works.
• Report electrical events to SAP; issue internal weekly progress reports highlighting changes in electrical conditions on site.
• Ensure timely and precise communications to SAP and CxA regarding switching operations; flag concerns to the Person in Charge of an Electrical Installation and Senior Engineer.

• Demonstrated history delivering HV/MV infrastructure projects; if appointed as MV Authorised Person, be familiar with LV infrastructure and equipment.
• Experience managing work and safety across control boundaries.
• Experience supervising advanced cable works including phasing, testing, identifying and spiking (licensing may be required in some jurisdictions, but process familiarity is essential).

Mercury is an equal opportunities employer.