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Version One 20061 Naturally Occurring Radioactive Material Supervisors Training Course.

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Presentation on theme: "Version One 20061 Naturally Occurring Radioactive Material Supervisors Training Course."— Presentation transcript:

1 Version One Naturally Occurring Radioactive Material Supervisors Training Course

2 Version One Course Administration  Emergency procedures  Facilities:  first aid, prayers, refreshments, toilet  Documentation:  course roster, HSE passport  Restrictions:  smoking, telephones and pagers  Introduction:  name, company, position and expectations of the course

3 Version One Course Aims  Aims of the course are to provide knowledge and understanding of:  basic radiation (NORM) theory  where NORM can be found  personal hygiene and health risks  system of work procedures to control NORM risk and use and checking of PPE

4 Version One Course Aims (Continued)  PDO procedures  roles of personnel  supervision of NORM jobs as agreed by CRFP  duties and actions of RPT  use of monitoring equipment by RPT  radiation and contamination level assessments  registering and recording NORM survey results

5 Version One Course Objectives  On completion of the course attendees will be able to:  explain NORM theory  describe where NORM can be found  explain NORM health, environment and reputation risks  describe NORM control measures  describe RPT actions in undertaking a contamination survey  interpret information recorded and reported of NORM in the field  complete supervisors section of NORM survey report form

6 Version One Radiation Sources in PDO Radiation sources Installed gauges Radio tracers Industrial radiography Well logging Portable gauging equipment NORM

7 Version One What is NORM? Naturally Occurring Radioactive Material

8 Version One Radiation  NORM decay and emit:  Alpha particles (α)  Beta particles (β) and  Gamma rays (y)

9 Version One Radiation Alpha Beta Gamma

10 Version One Enclosed Equipment Gamma radiation  High energy  Can penetrate piping where scales deposit  External Risk

11 Version One Open Equipment  Alpha / Beta particles:  inhaled  ingested  absorbed into cuts  Internal risk

12 Version One Health Risk  NORM radiation  Low gamma radiation risk  Major risk inhalation and ingestion of scale/debris  Alpha / Beta particles can damage internal cells  May lead to lung or bone cancer

13 Version One Where to Find NORM  Fixed Scales  Sludge  Salts  Assume all fluid bearing systems are NORM contaminated until proven otherwise  If in doubt ask the PDO Production Supervisor

14 Version One Scale Valves Tubulars

15 Version One Sludge Sludge mixed with sand and land farmed Sludge stored in pits

16 Version One Evaporation Pond

17 Version One Separators and Tanks

18 Version One Water Leaks

19 Version One Job Types at Risk  Who is exposed:  production operatives  production maintenance  tank, vessel, separator cleaning  hoist and rig crews  pigging crews  sludge farm operatives

20 Version One NORM Specification  SP 1170 Management of NORM  system of work (PTW)  exposure limits  monitoring  transportation  storage  PPE  Templates / Records

21 Version One Managing NORM Risk  NORM management flow chart: Vessel inspection Before entry monitor NORM Is external radiation and or surface contamination greater than clean area level *Classify area Continue monitoring * Implement appropriate safe working procedures Normal Working procedure Compile NORM Monitoring data Is there solid waste Specific activity analysis All solid waste stored in labelled drums/containers Identify Assess Control & Recovery PTW

22 Version One Permit to Work  Permit to Work:  When opening production equipment  Request NORM Survey as part of the PtW OR  Verify surveys or maps that facility is:  NORM free,  NORM Suspected  NORM Contaminated  Check with Production Operator

23 Version One C B E D NATIH NAHAD.B.S SHIBKAN FAHUD WEST NORM Contamination: NORM Suspected: NORM Free: NORM Contamination: > 5CPS abg ( > 10 cps) NORM Suspected: Minor NORM ( < 10 cps) NORM Free: Background levels (2 - 3 cps) Fahud NORM Map A

24 Version One NORM Survey

25 Version One NORM Survey Report Form

26 Version One NORM Guidelines  Procedures for specific NORM tasks:  “How to do” documents  tank and separator cleaning  pigging  transportation  sampling  well workovers / servicing  Others available

27 Version One Controlling NORM  Plan the job  Conduct tool box talk  Create a supervised area  Follow procedures / guidelines  Provide appropriate PPE  Prevent airborne dust  Provide polyethylene lining and containers  Contain debris in one area  Encapsulate equipment at open ends

28 Version One NORM PPE  Appropriate PPE:  P3 disposable respirator  disposable coveralls  impermeable rubber gloves  safety glasses  steelcap boots  Note: PPE should washed or wiped clean and disposed as normal  Do not send to Bahja

29 Version One Personal Hygiene  If working with NORM equipment:  do not eat or drink in cordoned area  do not apply barrier cream or lip balm  Dress cuts and abrasions  Wash hands and face before eating, drinking or smoking

30 Version One NORM Monitoring Conducted by trained personnel  Before commencement of work  Using NORM Record Form  Attach NORM Record to PtW

31 Version One NORM Meters PDO Assets must have: 1.Mini 900 with 44A probe 2.Mini 900 with EP15 Probe 3. Graetz X5 Cex Dose Meter Specific Operations e.g. hoists

32 Version One Mini 900 with 44A probe  Basic contamination Meter  Reads in counts per second (cps)  Tests + / - for NORM  Sensitive for gamma radiation  Used to measure external contamination before opening  Used to measure internally once opened  Not intrinsically safe

33 Version One Mini 900 with EP15 probe  Contamination Meter  reads in counts per second (cps)  Detects Alpha (α) and Beta (β)  Used to measure external contamination  e.g. esp’s, tubulars and LNG equipment  Fragile, not intrinsically safe

34 Version One Graetz Dose Meter  Reads in microsieverts/hr (µSv/hr)  Used if Mini 900/44A > 100 cps  E.g. tank & separator cleaning  If dose > 2.5 uSv/hr = Supervised Area  If dose > 7.5 uSv/hr = Controlled Area  Intrinsically safe

35 Version One Contamination Monitoring  Mini 900 with 44A prove  background radiation counts per second (cps)  readings > 5 cps above background = NORM  implement NORM Procedures (Guidelines)

36 Version One Contamination Monitoring  Tells us if NORM is there (Yes or No) < 5 cps abgNo NORMNo controls > 5 cps abgNORMPPE if opening > 100 cpsNORMPPE if opening Monitor dose

37 Version One Dose  Dose - signifies the harmfulness of the radiation  Higher dose = greater health risk < 1 uSv/hrMinimal external risk > 1 uSv/hrRisk increasesKeep records > 2.5 uSv/hrSupervised AreasRestrict access > 7.5 uSv/hrControlled AreasOnly radiation workers in these areas

38 Version One Labelling & Placarding Yellow/black stickers Tubulars, pumps, pipes NORM Placards Wells Manifolds Areas

39 Version One Storage  Wrap in heavy duty plastic (0.2 mm)  Use NORM Tape Drum sludge or pigging debris

40 Version One Storage Plastic wrap exterior contaminated tubulars End cap all tubulars

41 Version One Completing NORM Work  On work completion:  complete record form  send sample for laboratory analysis  decontaminate everyone leaving site  check site for contamination  take down barriers

42 Version One Recording NORM Data  SP Appendix A  job details  monitoring details (cps) or (µSv/hr)  supervised & controlled areas exposure log (µSv/hr)  Signatures  If daily dose exposure > 8 µSv per day keep permanent record  perform risk assessment on Job type

43 Version One Transport of NORM Originator completes: Appendix B of SP 1170 Despatch Section of Appendix C Gives Appendix B to Transport Contractor Transport Contractor completes: Appendix C of SP 1170 Gives Forms to Bahja NORM Yard Operator

44 Version One Transporting NORM  Recording NORM:  measure radiation emitted & record findings  identify & label contaminated equipment  create & maintain records  advise asset of results & contaminated equipment  inventory contaminated equipment  transport to PDO Bahja NORM Yard

45 Version One NORM Movements  Recording movement:  transported as class 7 dangerous good  label equipment & placard truck  measure drivers exposure dose  check vehicle prior to leaving  transport to the Bahja NORM Yard  provide yard operator with records (Appendix B & C)

46 Version One NORM Training  NORM training:  awareness training for all personnel exposed to NORM in the workplace  supervisor training for all personnel responsible for issue of permits to work or supervise workers exposed to NORM

47 Version One NORM  Summary:  assume all fluid bearing systems contaminated until proven clean  refer to PDO Production Supervisor to identify NORM areas  follow SP 1170 and SP 1009  implement NORM guidelines  test ALL systems at first breach and regularly as new surfaces encountered  record all results including zero readings  wear appropriate PPE  transport contaminated material to storage facility

48 Version One Mini 900 with 44A probe  Externally  Around bends  5 cps abg = NORM  Internally  Turbulent areas  5 cps abg = NORM


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