Plymouth project completes ahead of schedule with zero injuries

Green Frog Connect have completed construction work on a 20MW embedded gas plant, at Cattedown Business Park in Plymouth, with zero injuries. Located on a challenging site, previously utilised as a tip for building material and a quarry, the project was completed to tight timescales after winning a capacity market obligation in National Grid’s Early Auction on 3rd February 2017, for delivery by October 2017.

With over 20,000 hours worked, the project included very high risk work including excavations, major crane lifts, high voltage works and working at height. Early site clearance works were initiated in January, in anticipation of the auction, with full mobilisation immediately following the results. Design and planning works had already been completed well ahead of the auction.

Tom Drake, Director of Green Frog Connect, said, “This project demonstrates the impact of our commitment to the continuous improvement of Health and Safety practices. We’d like to thank all our team, and our sub-contractors, who have worked together to maintain high safety standards whilst delivering the project ahead of schedule.

The construction of this small-scale gas fuelled capacity mechanism embedded power plant, within a 2,400m2 compound, included the construction of foundations to accommodate electrical equipment including generators, transformers, the switchroom and containerised units. High and low voltage cabling has been routed around the site, which is bordered by a sheer cliff on two sides, a site of special scientific interest (SSSI), and a busy industrial estate.

Adrian Sherman, Green Frog Connect’s SHEQ liaison on the project, said, “Considering the number of working hours and all the hazards faced throughout the construction of the site, this is a fantastic achievement which we are rightly very proud of.

Despite the challenges and tight timescales, the site was generating and available for export from mid-September and is now available to respond to Capacity Market Warnings issued by National Grid. The Capacity Market exists to ensure long-term security of supply by ensuring there is sufficient generating (or demand reduction) capacity at times of system stress, for example when renewable sources are not producing at a time of high demand.