Theatre 2 and Recovery Upgrade
The Royal Marsden Hospital Sutton, part of the NHS Foundation Trust, is recognised worldwide as a leader in cancer treatment and research. In line with the Greener NHS commitments, NHS England has set ambitious targets to reduce carbon emissions by 80% by 2028 and achieve net zero by 2040. Energy efficiency is central to this mission, and the hospital has therefore undertaken upgrades to its legacy systems, to reduce energy consumption while safeguarding patient comfort and safety within its most critical clinical environments.
Plantroom 630, which serves Theatre 2 and Recovery AHUs and associated chilled water system, VT pumps and area reheaters was selected for upgrade. NDA, working with NHS Trust, was involved in the early stages as part of planning, which led to the decision of retaining existing plant but upgrading to a new MCC panel and VT pumps. As the plant for operating theatres provides a critical service, early design review of the systems was important to the project. This led to the tender process where NDA was involved in:
- Tender BMS specification produced and sent out to contractors invited to submit their tenders
- Review of tender documents and scoring based on tender analysis on pricing and quality
- Recommendation and selection of the best-fit contractor for the project and following kickstart
Coordinating with the client, MEP and BMS contractor, NDA was involved in the following works:
- Revision of the latest BMS Briefing standard, originally produced by NDA Consulting Ltd
- Decommissioning of the existing MCC panel, redundant cabling and field devices
- Design and factory testing of the new MCC panels with review of updated documentation
- Compliance with client’s standard and HTMs throughout the process
- Review of Technical Submittals by the contractors and answering RFI’s for assistance
- Decommissioning of the existing Trend 963 and redundant points, graphics and alarms
- Production of the new IQ Vision graphics in line with the RMH BMS Standards
- Networking the controllers through IP on the RMH IT network through IT trusted switches
- Revision to construction documents followed by site survey reports for support
- Commissioning, witnessing, and signing off; managing the contractor
- Operational and Maintenance manual initial and final review prior to handover to client
Services to the operating theatre remained operational during the project, with provision of a temporary panel by the contractor, TVR controls. Trend IQ4 series controllers were used with optimised control strategies and loop tuning validated and improved during witnessing of the BMS by NDA.
The system featured operational and setback modes for the Theatre AHU, with occupancy-based control to optimise energy performance, with an effective strategy to utilise free cooling and heating through heat recovery via a recuperator. NDA’s early involvement in the design and specification stages ensured the control philosophy was well-defined prior to implementation, and helped streamline commissioning, minimise on-site modifications and deliver a solution that met performance and client’s standards.
