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AFPC Policy Protect its personnel, contractors,3rd parties and the environment against the hazards of exposure to ionizing radiation due to AFPC activities.

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Presentation on theme: "AFPC Policy Protect its personnel, contractors,3rd parties and the environment against the hazards of exposure to ionizing radiation due to AFPC activities."— Presentation transcript:

1 AFPC Policy Protect its personnel, contractors,3rd parties and the environment against the hazards of exposure to ionizing radiation due to AFPC activities. Avoid uncontrolled releases of radioactive contaminated substances and to minimize the effects of past deposits apply the principles of ICRP 60 for radiation protection ( justification of a practice, optimization of protection and dose & risk limitation) avoid the need for classified radiological workers wherever reasonably practicable 11/24/2018

2 Clean up of NORM contaminated areas
Radiological surveys have identified AFPC areas which have become contaminated with NORM. AFPC procedure is applicable to all AFPC activities to decontaminate NORM affected areas. define standards and ensure availability of resources for decontamination. 11/24/2018

3 Clean up of NORM contamination areas
Typical clean up activities shall be controlled by a defined work methodology: A detailed execution plan Proposed clean up criteria Special measures 11/24/2018

4 NORM in Oil and Gas Industry
Releases of radioactivity with produced water Radioactive surface contamination on production equipment Radioactive sludges Radioactive scales Radioactive surface contamination on disused equipment 11/24/2018

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6 NORM Remediation Programme
All NORM contaminated areas have been extensively investigated by SAEC. As the Syrian regulatory body, SAEC stated the preferred options for the permanent management of NORM contaminated waste The final option has been supported by the external consultants AEA technology. 11/24/2018

7 Main Concept to have all NORM Remediation projects integrated into a larger Programme of environmental remediation. The AFPC Programme is designed to meet regulatory requirements and International Standards to acceptable levels at reasonable cost. 11/24/2018

8 Syrian Clean-up and Disposal Criteria for NORM contaminated soils:
At 0.15 Bq/g of Ra226 or less no treatment required. More than 5.2 Bq/g of Ra226 must be treated as radioactive waste. Between 0.15Bq/g and 5.2 Bq/g of Ra226 need a special treatment on site to reduce exposure to a value 0.1 mSv/y. 11/24/2018

9 The final option following recommendations by SAEC and
AEA Technology, AFPC preferred route for three NORM contaminated areas is engineered disposal mounds, while disposal the fourth is by stabilization in a landfill. 11/24/2018

10 Requirements for engineered mound disposal facilities
Provide isolation of the waste from the surrounding environment Inhibit surface water infiltration into the waste Inhibit erosion of the cover over the waste Maintain a separation between the waste and the ground water Promote the drainage of water that infiltrates the wast out of the waste 11/24/2018

11 Requirements for engineered mound disposal facilities
inhibit human and animal intrusion through the cover into the waste Maintain stability under foreseen subsurface and geologic condition the site for a dedicated facility should above flood - plain levels 11/24/2018

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14 Requirements for engineered mound disposal facilities
The facility should be able to cope with major events(flood,earthquake,and fire) on a time-scale of > 200 years. Performance requirements during construction use of reasonably available materials and machinery Optimization of waste movement and keeping radiation dose to workers ALARA 11/24/2018

15 Engineered Disposal Pits
All contaminated materials excavated and removed to disposal pit Co-disposal of sludge ; encapsulation Lined pits Perimeter ditch Coarse rock buttress Clean soil Top liner 1.0 m 1.5 m 3.0 m 5 m 10 m Lower liner NORM soil 11/24/2018

16 Thayyem: channel / sludge materials removed to disposal pit
11/24/2018

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18 El-Ward: lagoon materials removed to disposal pit NW of plant
11/24/2018

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