HHA Areva Warehouse (Hinkley Point C)

Bouygues UK

48 weeks


A new 5,000 square metre warehouse built within the site boundaries of the Hinkley Point C (HPC) nuclear power station. This was the first of the permanent buildings to be erected on the site.

HHA is a storage and workshop facility built initially to assist with the construction of the main power station. Its final use is to be a primary maintenance facility.

Adjacent the main warehouse area are various engineer workshops, welding areas and smaller storage rooms. Offices and welfare facilities are located to one end of the building, mechanical plantrooms situated at either end with the main electrical switch room located in the far corner.


A new HV package substation supplies a primary distribution panel, with sub main cabling installed to local lighting and power sub distribution boards.

The lighting throughout the main warehouse area utilises LED high bay luminaires suspended from a Tecton lighting trunking. There are linear luminaires to the workshop areas, with modular LED light fittings the office and welfare areas.

2No central battery emergency lighting systems, provide escape lighting throughout.

Multiple power outlets, 240v 3 pin, 415v BS4343 and 110v Commando sockets to all workshop and warehouse areas, dado trunking for power and data provision to the office area.

Ancillary systems include, fire alarm, access control, CCTV, PAVA, networked lighting control, lightning protection, data infrastructure, disabled alarms for WC and shower area, specialist deep earthing and finally, intrinsically safe lighting, power and extract to a hazardous substances store area certified to ATEX standards.


High level radiant heating installed in the warehouse area and fan coils units to the offices and welfare area. 2No air handling units at either end of the building provide the ventilation for the workshops and office areas respectively.

Vehicle and welding extract systems installed.

6No CRAC units provide controlled cooling to sensitive storage and data rooms.

Ancillary systems in include BMS, external siphonic drainage, domestic hot and cold water services and internal drainage.

All aspects of the M&E installation were subject to the highest levels of inspection, certification and final sign-off, as to be expected with a nuclear power plant project.