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Presentation to: LSUF

Presentation to: LSUF. Liquid Scintillation Users Forum – Introduction – NPL. Mike Woods. September 2001. NPL Founded 1900. In 1899 the British Government approved the establishment of a National Physical Laboratory . . .

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Presentation to: LSUF

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  1. Presentation to: LSUF Liquid Scintillation Users Forum – Introduction – NPL Mike Woods September 2001

  2. NPL Founded 1900 In 1899 the British Government approved the establishment of a National Physical Laboratory . . . “for the testing and verification of instruments, for the construction and preservation of standards of measurement and for the systematic determination of physical constants and numerical data useful for scientific and industrial purposes.”

  3. DTI FUNDED NMS PROGRAMME National Measurement System • Maintenance and development of primary and secondary standards • Participation in international measurement system • Maintenance of calibration facilities • R&D related to standards and measurement • Dissemination of standards and best practice - Technical advice service - National committees - Training • - User groups • Best practise guides • Publications/presentations

  4. Ionising Radiation Metrology • Provision, maintenance, development & dissemination of standards for radioactivity, ionising radiation dosimetry and neutron measurement • Technical advice/support for good practice & innovation • Maintenance and demonstration of international equivalence In order to • Enable regulatory compliance (e.g. RPI calibrations, atmospheric discharge) – driven by increasing regulation • Improve quality of life (e.g. environmental monitoring, radiotherapy) – driven by public opinion and government policy • Provide economic benefit (e.g. Supply of radionuclides, radiation processing) – driven by increasing use and applications of radiation and radioactivity

  5. Jul-00 Dec-00 May-01 Shallow studies MMI model Draft programme Outline themes & topics Final programme CIRM staff User communities MAC Working group NMSPU/DTI CIRM staff User communities Focus groups (Sep-00) MAC Working group CIRM staff User communities Regulatory drivers Programme Formulation Process

  6. Technology Transfer Centre for Ionising Radiation Metrology (CIRM) Major Measurement Facilities RadioactivityMetrology Radiation Dosimetry Neutron Standards

  7. Primary Standards Facilities/Techniques 4(APPC)--coincidence counters 4(HPPC)--coincidence counter 4(LS)--coincidence counter Triple differential length gas counters

  8. Secondary Standards Facilities • Liquid scintillation counters • CIEMAT-NIST • Well-type ionisation chambers • Ge spectrometers • NaI well crystals • Radon generator • Large-area, multi-wire proportional counter

  9. Support Facilities • Radiochemistry • VYNS source mount production • Health physics • Radioactive source inventory • Nuclear data evaluations

  10. Measurement Services • Single and multi-nuclide standards (0.1 Bq/g to > MBq/g) • Hospital source calibration service • Radon-in-gas and radon-in-water • Gamma reference sources • Gas standards • Tritium monitor calibrations • Analytical services

  11. Environmental Standards • Mixed radionuclide solution 10 ml, 6 kBq total – 3 times per year 241Am, 109Cd, 57Co, 139Ce, 203Hg, 113Sn, 85Sr, 137Cs, 60Co, 88Y • Single radionuclide solutions U, Pu, Am, Th, 90Sr, 99Tc, 129I, 35S, 14C, 3H, 137Cs, 60Co, . . . . . . . . . . . . . . . . . . . .

  12. Knowledge Transfer – Intercomparisons/Workshops • Hospital Radionuclide Calibrators • Brachytherapy sources • Surface contamination monitors • Environmental samples

  13. Knowledge Transfer – Training Courses • Surface contamination monitor calibrations • Uncertainties (a) gamma spectrometry (b) radiochemical analysis

  14. Knowledge Transfer – User Fora • Gamma spectrometry • Alpha spectrometry • Radionuclide calibrators (2002) • Air monitoring (20 Sep 2001) • Liquid Scintillation (5 Sep 2001)

  15. Knowledge Transfer – Good Practice Guides • Calibration & Testing of Portable Radiological Protection Monitors • Calibration & Testing of Installed Radiological Protection Monitors (in development) • Practical Radiation Monitoring (in development)

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