The Provision of CAST Personal Dosimetry Service

Tender description

CAST’s scientists and engineers work with a variety of radioactive sources and different types of radiation. CAST has an obligation to undertake radiation dose measurements for potentially exposed workers, and keep records of any doses received. CAST shall ensure that activities are suitably risk assessed and where appropriate control measures shall be put in place to help mitigate any risk, and keep radiation dose levels as low as reasonably achievable. CAST will monitor radiation doses through the use of personal dosimeters The supplier must offer an Approved Dosimetry Service (ADS), approved by the UK Health and Safety executive under the Ionising radiation Regulations 1999 Currently CAST only require a Dosimetry Service for non-classified workers, although this may change in the future. The supplier will have the ability to provide a variety of personal radiation dosemeters, to cover a variety of measurement needs. This must include; • A range of TLDs (Thermoluminescent Dosemeters) capable of measuring whole body, skin & extremity does of gamma, x-ray and beta radiation. • Neutron Dosemeters for measurements of whole body and skin doses from neutron radiations. • Named & unnamed dosimeters. • Transit controls to ensure that no exposure occurred during transportation. Dosemeters should be exchanged and read on an agreed schedule, for example every 4, 8 or 12 weeks. The results should be supplied to CAST in a clear and logical format, within three weeks of the dosemeters being returned to the supplier for reading. For full specification please view 'Appendix B - Service Description' attached.