Published date: 14 December 2020
Closed opportunity - This means that the contract is currently closed. The buying department may be considering suppliers that have already applied, or no suitable offers were made.
Contract summary
Industry
Pumps - 42122000
Pumps for liquids - 42122100
Cooling pumps - 42122160
Vacuum pumps - 42122450
Location of contract
South East
Value of contract
£100,000 to £500,000
Procurement reference
BIP553096456
Published date
14 December 2020
Closing date
6 January 2021
Closing time
2pm
Contract start date
18 January 2021
Contract end date
31 March 2021
Contract type
Supply contract
Procedure type
Open procedure
Any interested supplier may submit a tender in response to an opportunity notice.
Contract is suitable for SMEs?
Yes
Contract is suitable for VCSEs?
No
Description
The final date and time for submission of bids is the 06th January 2021 at 14:00
All tenders information must be submitted through the Delta eSourcing Portal
Breif description of the requirement;
The ISIS Neutron and Muon Source supports around 800 experiments per year, with almost 70% of these involving Cryogenic Sample Environment.
One of the most common ways to provide a Cryogenic Sample Environment is using a pumped helium 4 cryostat.
Such a cryostat features a liquid helium 4 bath at 4.2K. From this bath a small amount of liquid helium is drawn through to a heat exchanger, at which point a room temperature vacuum pump is used to reduce the vapour pressure above the liquid helium, giving cooling. The minimum temperature with such a system is around 1.4K.
The ability to provide such a cryogenic environment is critical to ISIS operations.
In addition, pumped helium gas is recovered by the facility and re-liquefied. In order for this process to be successful there must be no contamination of the helium gas due to the pumping process.
Currently this service is provided by scroll pumps. These are no longer suitable for this purpose due to the continuous ejection of tip-seal particulate material, the frequent maintenance required, and the noise & heat generated. They also lack the pumping capacity to deal with our more demanding equipment.
To this end we require 10 multi-stage roots design vacuum pumps which are able to pump this cold helium gas at the required rate, and which do not allow the helium to come into contact with significant contaminants (e.g. oil). The pumps should also be quiet, easily transported, and low maintenance.
For more information about this opportunity, please visit the Delta eSourcing portal at:
https://www.delta-esourcing.com/tenders/UK-GB-Didcot:-10-Multi-stage-root-pumps/89P42Q2443-0000m,m
More information
Links
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- https://www.delta-esourcing.com/tenders/UK-GB-Didcot:-10-Multi-stage-root-pumps/89P42Q2443
- Tender notice
- Please follow this link to view the notice.
Additional text
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The contracting authority considers that this contract may be suitable for economic operators that are small or medium enterprises (SMEs). However, any selection of tenderers will be based solely on the criteria set out for the procurement.
About the buyer
Contact name
Declan Ward
Address
Polaris House
North Star Avenue
Swindon
SN2 1FL
UK
Telephone
01793444000
Share this notice
Closing: 6 January 2021, 2pm