21 –23 Feb 2005NORM Workshop 2005 PDO NORM Management System Brett Young

21 –23 Feb 2005NORM Workshop 2005 Specification SP 1170 Version.3.0 –Defines responsibilities –Est. Dose limits –Inc. NORM Radiological Surveys into the PTW –Training –Transport and Storage Locations –Emergency Procedures –Incorporates NORM Management Guidelines

21 –23 Feb 2005NORM Workshop 2005 SP 1170 PDO Policy –Plant that has conveyed or stored production fluids (water/oil) or gas are potentially NORM contaminated. Dose Limits –1 mSv/year for PDO workers & contractors –NORM Guideline CSM.001 provides guidance on action limits Inhalation / Ingestions Limits –5 cps above background - PPE

21 –23 Feb 2005NORM Workshop 2005 NORM Management Guidelines Based on Syrian Guidelines –“How to”….. guidelines –Inc. NRS in PTW for consistency of approach –Added flow charts for specific activities –Modified to include PDO’s meters

21 –23 Feb 2005NORM Workshop 2005 HEMP - Permit To Work Production oil/gas/water - conveyed/stored –Trips PTW which requires a NORM Radiological Survey (NRS) –Measurements conducted by RPT –Recorded and attached to PTW –NRS stipulates controls e.g. PPE, Supervised/Controlled Areas.

21 –23 Feb 2005NORM Workshop 2005 Example - Zauliyah Measurements for Tank T7402 –Ground 5 μSv/hour ( cps) exterior wall –At 50 cm above ground = 2.0 μSv/hr exterior wall –At 1.0 m above ground = 1.5 μSv/hr (125 cps) exterior wall –At 1.5 m above ground = 20 cps exterior wall Inside tank in centre approx μ Sv/hr Workers 4 hrs per day inside cleaning = 80 μ Sv/day 80 uSv/day x 14 (days) = 1120 μ Sv/2 weeks inside tank > 1 mSv/2 weeks

21 –23 Feb 2005NORM Workshop 2005 NORM Radiological Survey √ 24372

21 –23 Feb 2005NORM Workshop 2005 Example of NORM Survey ReportCertificate No: 24372

21 –23 Feb 2005NORM Workshop 2005 Monitoring of Personnel Action Limit 1 μSv/hour Record on NORM Radiological Survey Attached to PTW RPT estimates workers daily dose > 8 μSv/day record into a database Risk assessment - Tank cleaners and sludge farm operators required to wear TLD Badge

21 –23 Feb 2005NORM Workshop 2005 Bahja NORM Storage facility Rest Room & Toilet Scrap metal 50m x 25m Drum storage 50m x 25m 400 m Entrance gate * Concrete pad 100 m x 50 m Tubulars 50m x 25m 2 Pits Sludge Storage 100m*10m*1m depth

21 –23 Feb 2005NORM Workshop 2005 NORM Survey Proposal Reservoir to Min Al Fahal (MAF) Oil/water/gas  wells  manifold/gathering station  Main pumping station (MPS)  MAF tanks Survey Proposal Survey backwards from MPS (dehydration tanks)  Gathering Stations (separators)  % well heads Fields declared –Green (NORM Free) –Yellow (NORM Suspected) –Red (Known NORM) Work back as to which geology, depth, water chemistry, E.O.R. programs are likely to produce NORM

21 –23 Feb 2005NORM Workshop 2005 Further discussion 1.Does PDO need dedicated Interior based RPS? 2.How do other organisations consistently identify contaminated plant/areas? Do you use a PTW system or other? 3.Are surveys a useful tool? Do you utilise a similar method or other than proposed?