PDO NORM Management System

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PDO NORM Management System

• Brett Young

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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

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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

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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 PDOs meters

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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.

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Example - Zauliyah

• Measurements for Tank T7402
• Ground 5 µSv/hour (450 - 500 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. 15 - 20 µSv/hr
• Workers 4 hrs per day inside cleaning 80
  µSv/day
• 80 uSv/day x 14 (days) 1120 µSv/2 weeks inside
  tank
• gt 1 mSv/2 weeks

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NORM Radiological Survey v 24372
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Example of NORM Survey Report Certificate No
24372
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Monitoring of Personnel

• Action Limit 1 µSv/hour
• Record on NORM Radiological Survey
• Attached to PTW
• RPT estimates workers daily dose
• gt 8 µSv/day record into a database
• Risk assessment - Tank cleaners and sludge farm
  operators required to wear TLD Badge

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Bahja NORM Storage facility
400 m
Entrance
Concrete pad 100 m x 50 m
Rest Room Toilet
400 m
gate
2 Pits Sludge Storage 100m10m1m depth
Tubulars 50m x 25m
Drum storage 50m x 25m
Scrap metal 50m x 25m
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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

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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?