Project title Severnside Energy Recovery Centre
Location Avonmouth, South Gloucestershire
The Severnside Energy Recovery Centre is in the final stages of its construction on a brownfield site adjacent to Seabank Power Station and the former Terra Nitrogen plant at Severnside, near Bristol.
When complete the centre is anticipated to be capable of processing up to 400,000 tonnes of non-recycled waste, with capacity to generate up to 32 megawatts of electricity. This concept, which has been developed over the past 10 years, will also generate the heating for the entire building.
Sita UK, a major provider of recycling and waste services in the South Gloucestershire and Bristol areas, says its delivery of the energy recovery centre will make a significant contribution to providing new treatment and recovery facilities to manage commercial and industrial waste from the former Avon County Council region, along with the ability to manage residual household waste from West London that will be delivered to the facility by rail.
SCS Group’s involvement
Initially, SCS Group was brought in to provide the BEMS (Building Energy Management System) to operate the heating, chilled and hot water systems, ventilation and five air handling unit (AHU) plants, with every office having independent FCU (fan coil unit) control for user comfort.
Following the successful approved design of the BEMS, VVB Engineering tasked SCS Group with supplying a damper monitoring system and natural ventilation packages. The natural ventilation system regulates the temperature within the process plant which is critical to its operation. This has been integrated into the BEMS package for full control and monitoring. The total cost for the BEMS, natural ventilation, dampers systems and electrical installation is in excess of £1.25 million
Regional Manager (Wales and West) Mike Jackson said: “Our approach is the same on every multiple package project which is to simplify the control of building services by combining two or more typically disparate systems to remove duplicate hardware, software and project management to provide a leaner, more effective solution which saves overall cost to the client”
SCS Group’s solution
SCS Group’s main challenge was to understand what the building, the mechanical and electrical system and the process plant required, ensuring we offered the best quality and value for money in a short period of time. Our hard work and research during the design stage ensured that we produced great BEMS which will add value for the client and optimise energy usage at every level.
We are providing a fully integrated bespoke graphics system which controls and monitors all of our systems.
Some of the integration protocols that we have been using are: Energy system – ModBus and MBus; Natural ventilation – ModBus/IP; Damper system – BACNet/IP.
John Kavanagh, Senior Project Manager at SCS Group, explained: “Due to the tight contract deadlines, it was critical that SCS Group’s own in-house panel-building facility in Dorset manufactured all controls in record-breaking time.
“SCS manufactured more than 30 MCCs (motor control centres) for this project. One of the control panels is more than six metres long and was designed and manufactured in just four weeks from order.”
Matt Davies, Commissioning Engineer at SCS Group, said: “This project has been so challenging due to the scale of projects and the technical challenges associated with fully integrating so many systems of different network protocols. It was a joy to see all the systems from one powerful head graphics package.”
The technology side of our work at Severnside has proved very interesting, as Regional Manager (Wales and West) Mike Jackson explained: “There are so many diverse systems on this project, all communicating in different protocols, but SCS Group managed to get them all linked and talking to each other using Priva controls and a Niagara headend.”