UKRI-2960 Building R69 Design and Build

This requirement document sets out the Client Brief for the Building to replace HRPD Building R69 for ISIS Neutron and Muon Source based at Rutherford Appleton Laboratory at Didcot, Oxfordshire. Estimated construction value £3,888,200 +VAT.

This is to be read in conjunction with the requirements detailed in Appendices in the eSourcing Portal.

The High Resolution Powder Diffractometer (HRPD) is a world leading neutron instrument, built in the 1980’s. It will be upgraded to become HRPD-x with increased capacity and capabilities utilising state of the art technology. The existing R69 HRPD Building is brick building at the end of a 90m guide tunnel. The guide tunnel consists of a portal frame, slab and concrete ‘F’ Section. A modular extension was added in 2019. Inadequate radiation shielding and lack of internal space available means the original building is no longer fit for purpose.

The new building will aim to provide ample space for the new instruments, better staff facilities and allow for future adaptability should new instruments or experiments need to be accommodated. The new HRPD-x Building is proposed to be a 2-storey building built on the existing footprint. The proposed building contains a main Instrument Hall and supporting facilities such as Control Room, Meeting Room and Laboratory. The Instrument Hall brief includes a fully removable interlocking concrete mezzanine floor over the instrument. A 6.3T crane is to be installed to allow for the lift out of the mezzanine floor panels and maintenance / replacement of elements of the Instrument. The Guide Tunnel is largely due to remain, with certain elements being removed and re-built including a portion the ‘F’ Section and with the entirety of the Guide Tunnel being re-clad. The project is currently at RIBA Stage 3. Appendix 3. Stage 3 Documents contains the Stage 3 Architectural, Structural and MEP design reports for the proposed building. The RIBA Stage 3 Report is to be validated and enhanced by the new design team under PCSA, as part of a two-stage design and build process by the successful contractor.

1. Increase in building size and footprint.
2. No impact on existing vehicular access.
3. Radiation shielding incorporated into design of the building (designs for shielding elements will be provided and validated by STFC).
4. Access into the instrument hall via a large roller shutter to remove equipment or instrument via over-head crane system. Large roller shutter door split and ground

floor to become large openable doors.

5. Provide internal vertical circulation from main entrance lobby.
6. Internal Pedestrian lift required.
7. External equipment lift with capacity of 1000kg.
8. First floor instrumentation hall floor panels to be removable.
9. Laboratory space at first floor.
10. Crane to allow removal of floor and instrument components – specification provided by client.
11. Staff welfare facilities.
12. Meeting room.
13. Instrument control room.
14. Re-clad/upgrade of guide tunnel.
15. Replacement of a portion of the concrete ‘F’ Section

Further details are contained in the tender documentation which should be read and understood fully. Additional information: To respond to this opportunity please click here: ukri.delta-esourcing.com/respond/24UAG6G5S4 ↗