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

Environmental and Food Measurements Lab & Individual monitoring lab

Yemen Republic

Population : 22 million

No. of Governorate :21

Area :535000 km square.

Introduction:

Establishment of the National Atomic Energy Commission (NATEC) 1999.

NATEC (National Atomic Energy Commission):

- Four general directorates .- Promoter of Peaceful Applications of Nuclear

Technology .

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

Organizational Chart

Radiation Exposure and Laboratories General Directorate

Laboratories

Radiation Safety Lab.

Calibration Lab.

Environmental and Food Measurements Lab.

Radiation Exposure

Quality Control Lab.

TLD Lab

Environmental and Food Measurements Lab.

Current Existent Instruments of our labs.

Notes Equipment

HPGe 30% RE , 1.8 ResGamma Spectrometer Unite (HpGe)

HpGe detector

NaI Detector

Liquid Scintillation Counter

The radiochemical Lab. Is under furbishingAlpha Spectrometry System

Thermo luminescent lab ( TLD )

HARSHAW 4500TLDs Reader

HARSHAW 6600 TLDs Reader

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

) .

Procedures of Environmental and Food Measurements Laboratory.

detector preparation for the measurementDetector Programs

Energ

Efficien

An agreement of a director: Exposure Laboratories Directorate

Samples receivingInternalAnother

preparation of samples for the measurement Environment

lFood

Measurement of samples

Analyze of samples

Analyze of results for samples

Report preparation to director

Report preparation to Presidency ofNATEC

Control Chart

Charts for FWHM

Charts for background.

chart for Energy calibration Charts for FWHM

Charts for background.

Proficiency Test for Environmental and Food

Measurements Lab.

OrganizerYear

IAEA2005

IAEA2006

IAEA2010

All PT tests were within accepted limit ( A )

Inter-comparisons:

Environmental and Food Measurements Lab.

Personal Dose Lab.

Receiving ordersPrivate Government

Acceptance

Giving forms to customer

(1Checking orders and making files registration

List of ready cards

Preparing list of delivered cards

Sending cards to customers

Following delivered cards

Calculating dose(1Calculating aimed dose

Making sure about accuracy of reader

Making Calibrating cards

Preparing annual dose file(1Preparing separate dose file for each customer

Checking the system

(1Checking customers annuallyChecking doses

Checking cards each 6 months

Calibrating the reader

Calibrating the cards

(1Reading the cards

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

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 PMT noise

Charts for Reference Light

QA and QC

The linearity of response for TLD from 237 to 3994 µSv

Linearity of TLD-100

y = 0.9809x + 36.812R2 = 0.9999

0

500

1000

1500

2000

2500

3000

3500

4000

4500

050010001500200025003000350040004500

Standar Dose

Mea

sure

d Do

se

Future Plan

Improvement of the Quality Assurance and Quality Control

* Involved in Internal & external comparison.

* Starting internal & external audit for our Labs.

Needs

More Training & Qualification.

Reference materials & PT tests

Experts.