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    ContractsRadiation-Tolerant NAMUR Inductive Sensors for Nuclear Operations
    Awarded contract

    Radiation-Tolerant NAMUR Inductive Sensors for Nuclear Operations

    Awarded
    £489.2k
    Published 16 Jun 2026

    Procurement of approximately 1,224 radiation-hardened NAMUR inductive sensors meeting ATEX, SIL certification, and independent radiation tolerance testing requirements for nuclear facility operations.

    🇬🇧United Kingdom· EnglandPublished 16 Jun 2026· 4 months agoviaFind a Tender
    Awarded
    £489.2k
    Published 16 Jun 2026

    Decision brief

    4 fields
    • Contract value
      £489,180
      Pounds sterling
    • Closing date
      Not published
      No closing date published
    • Sector
      Energy & Utilities
      Browse related listings
    • Location
      🇬🇧United Kingdom
      England

    Suppliers

    1 supplier
    • TB
      Turck Banner Ltd
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 4 months ago.

    16 June 2026
    Awarded — no open tender advertised

    Brief

    Sellafield Limited seeks to procure approximately 1,224 radiation-tolerant NAMUR two-wire inductive sensors for use in nuclear facilities. Sensors must be independently tested to withstand radiation exposure of 1 x 10⁶ Gray and meet stringent safety and performance standards. Key specifications include: 18mm diameter with threaded barrel and M18 x 1mm locknuts; flush fitting; DC 2-wire operation at nominal 8.2 VDC per EN 60947-5-6 (NAMUR standard); 5-10mm nominal switching distance; maximum sensor head length of 65mm; fitted electrical lead (minimum 2 metres, not M12 connector); ATEX Category II certification for gas (Zone 0) and dust (Zone 20) environments; SIL2 Low Demand Mode and SIL3 All Demand Mode certification; and IP67 protection class. Suppliers must provide an initial test batch of minimum 11 sensors manufactured from the same semiconductor component production batch for third-party radiation tolerance testing. Upon successful testing approval, the remaining order will be manufactured from the same component reel. A custom product part number is required. Quality Grade 04 applies to test sensors; Quality Grade 03 applies to production sensors.

    Track record

    3 awards · 3 winners
    Open field

    No single supplier dominates the field.

    In defence security, SELLAFIELD LTD has awarded 3 contracts to 3 suppliers.

    Who wins here
    1. Turck Banner Ltd1× · 33%
    2. Omniflex (UK) Ltd1× · 33%
    3. Curtiss-Wright Wimborne Limited1× · 33%

    Across defence security, the most active winners are Cooneen Defence Ltd, Lion Laboratories Ltd, VIKING ARMS LIMITED — the field to beat, or your route in as a partner.

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    Take action
    View on sourceFind a Tender

    Award notice and full record on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-069809

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    Buyer
    SELLAFIELD LTD
    Sector
    Energy & Utilities