# SWTC Demonstration of Avoidance of Brittle Fracture

> A sourced UK public sector contract award published by International Nuclear Services.

## Key facts

- Buyer: [International Nuclear Services](/buyers/international-nuclear-services/contract-awards)
- Tender value: £150,000
- Published: 2 May 2024
- Contract start: 3 June 2024
- Contract end: 12 May 2025
- Stage: open_tender
- Procurement category: services
- Notice ID: ddcdf672-6e3e-481a-913c-497f175728f0-747113
- OCID: ocds-b5fd17-bcd650e1-707c-44b4-b182-7ba4d23d371c

## Description

This specification describes the test and reporting requirements for a mechanical property test regime, required to gather data for SWTC - 255 Transport Package components\. The program of work covers Fracture Toughness, Residual Stress Measurement, Instrumented Fracture Toughness and Tensile Testing\. There is a UK strategic requirement for an IAEA SSR-6 compliant transport package, known as the SWTC-255, that will enable the transport of low heat generating waste from storage sites across the UK to a Geological Disposal Facility\. An Integrated Project Team \(IPT\), consisting of NTS, NWS and NDA are leading the design of the SWTC-255\. A programme of work has been agreed with NWS to develop the package through preliminary design with the aim of achieving a Technical Readiness Level \(TRL\) of 4\. The SWTC-255 package body and lid are currently specified as being manufactured by machining of Cast Martensitic Steel \(CMS\) to BS EN 10213:2007 Steel No\. 1\.6982\. Several manufacturability studies have been completed that concluded this was the preferred material to use for the SWTC-255\. NTS commissioned a review of previous material studies to inform the development of a brittle fracture case for the SWTC-255\. The report recommended a program of additional testing to establish fracture toughness properties of the CMS\. Suppliers are invited to respond to our open procedure via the Atamis e-procurement system at https://one-nda\.force\.com/s/Welcome

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## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/ddcdf672-6e3e-481a-913c-497f175728f0-747113)