Published date: 28 February 2024
Awarded contract - This means that the contract has been awarded to a supplier.
Contract summary
Industry
Nuclear fuels - 09340000
Research services - 73110000
Location of contract
London
Value of contract
£27,400
Procurement reference
PSS_2023_111
Published date
28 February 2024
Closing date
19 January 2024
Closing time
5pm
Contract start date
27 February 2024
Contract end date
28 June 2024
Contract type
Service contract
Procedure type
Negotiated procedure without prior publication (above threshold)
The opportunity was not advertised, because for example only one supplier is capable of delivering the requirement, or due to extreme urgency brought about by unforeseen events.
This procedure can be used for procurements above the relevant contract value threshold.
Contract is suitable for SMEs?
Yes
Contract is suitable for VCSEs?
No
Description
Non-active electrochemistry data for AGR cladding has been generated and modelling evaluation was carried
out by NPL, using the newly measured data to guide inputs, to predict susceptibility of the fuel cladding to SCC
in caustic conditions. Following these initial experiments, additional non-active testing has been carried out and
subsequent further modelling tasks and development have been recommended.
NPL will carry out the following Tasks:
• Investigation of the sensitivity of the modelling results (tip acidification and tip chloride accumulation) to the
transfer coefficient related to the cathodic reaction.
• Investigation of the sensitivity of the modelling results (tip acidification and tip chloride accumulation) to the
passive current density.
• Modify previous COMSOL simulation model of crack electrochemistry for advanced gas-cooled reactor
stainless steel cladding in pond storage to include the presence of boric acid.
• Modify the model to account for the dependency of the crack-tip current density on the local electrode
potential.
• Assess numerical convergence issues related to the very sharp change in electrode kinetics between the crack
walls and crack-tip and endeavour to resolve.
• NPL report containing the modifications to the previous model and example of results.
• Modify COMSOL model
Award information
Awarded date
19 January 2024
Contract start date
27 February 2024
Contract end date
28 June 2024
Total value of contract
£27,400
This contract was awarded to 1 supplier.
National Physical Laboratory
Address
Hampton Road,
Teddington,
TW11 0LW
GBReference
Companies House number: 02992144
Value of contract
£27,400
Supplier is SME?
No
Supplier is VCSE?
No
About the buyer
Contact name
David Brown
Address
Central Laboratory
Seascale
CA201PG
England
Telephone
01900 397025
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Closing: 19 January 2024, 5pm
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