National Atomic Energy Commission ( NATEC ) Radiation Exposure and Laboratories General Directorate

Transcription

1 National Atomic Energy Commission ( NATEC ) Radiation Exposure and Laboratories General Directorate Environmental and Food Measurements Lab & Individual monitoring lab

2 Yemen Republic Population : 22 million No. of Governorate :21 Area : km square.

3 Introduction: Establishment of the National Atomic Energy Commission (NATEC) NATEC (National Atomic Energy Commission): - Four general directorates. - Promoter of Peaceful Applications of Nuclear Technology.

4 Organizational Chart National Atomic Energy Commission Radiation Exposure and Laboratories General Directorate Registration, Licensing and Radiation inspection General directorate Waste, Emergency and Nuclear Transport General directorate Nuclear Records and Information General Directorate

5 Radiation Exposure and Laboratories General Directorate Radiation Exposure Laboratories Radiation Safety Lab. Quality Control Lab. Calibration Lab. TLD Lab Environmental and Food Measurements Lab.

6 Environmental and Food Measurements Lab. Current Existent Instruments of our labs. Equipment Notes Gamma Spectrometer Unite (HpGe) HPGe 30% RE, 1.8 Res HpGe detector NaI Detector Liquid Scintillation Counter Alpha Spectrometry System The radiochemical Lab. Is under furbishing

7 Thermo luminescent lab ( TLD ) HARSHAW 6600 TLDs Reader HARSHAW 4500 TLDs Reader

8 Quality Control and Quality Assurance for Labs. NATEC laboratory start quality assurance program with cooperation with IAEA through the project RAS/2/011/003. IAEA support (reference materials, PT tests, training and expert mission ).

9 Procedures of Environmental and Food Measurements Laboratory. Detector detector preparation for the measurement Programs Energ An agreement of a director: Exposure Laboratories Directorate Efficien Another Samples receiving Internal Food preparation of samples for the measurement Environment l Measurement of samples Analyze of samples Analyze of results for samples Report preparation to director Report preparation to Presidency of NATEC

10 Control Chart chart for Energy calibration Charts for FWHM Charts for background.

11 Proficiency Test for Environmental and Food Measurements Lab. Year Organizer 2005 IAEA 2006 IAEA 2010 IAEA All PT tests were within accepted limit ( A )

12 Inter-comparisons: Environmental and Food Measurements Lab.

13 Personal Dose Lab. Private Receiving orders Government Acceptance Giving forms to customer Checking orders and making files registration (1 List of ready cards Preparing list of delivered cards Sending cards to customers Following delivered cards Calibrating the reader Calibrating the cards Calculating dose Preparing annual dose file Preparing separate dose file for each customer Checking the system Calculating aimed dose (1 (1 Making sure about accuracy of reader Reading the cards (1 Checking cards each 6 months Making Calibrating cards Checking customers annually (1 Checking doses

14 QA&QC PROSEDUERS Normal measurements before reading field dosimeter The card linearity response test Identify the Law Detection Limit (L.D.L) written records of relevant procedures and results and documentation verification of the appropriate calibration and conditions of operation of dosimetry and monitoring equipment

15 QA &QC Every two months (before reading the field cards) we read the Q.C and blank cards by the reader. Before reading any card we measured the PMT noise and the Reference Light Charts for Reference Light Charts for PMT noise

16 QA and QC The linearity of response for TLD from 237 to 3994 µsv Linearity of TLD-100 y = x R 2 = Measured Dose Standar Dose

17 Future Plan Improvement of the Quality Assurance and Quality Control * Involved in Internal & external comparison. * Starting internal & external audit for our Labs.

18 Needs More Training & Qualification. Reference materials & PT tests Experts.

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