Norm Workshop (Pdo - Oman)

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Norm Workshop (Pdo - Oman) 21 - 24 February
2005 TIM ELEY - SCOTOIL GROUP plc, ABERDEEN MARK
RITCHIE - OES, CAIRO, EGYPT
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• AGENDA
• Introduction to Scotoil Group Scotoil Services
• Equipment subject to NORM - Rogues Gallery
• Equipment Decontamination Procedure
• Step by Step, Aberdeen
• Disposal Route - Compliance with Regulations
• Scotoil - Oilfield Environmental Services
• Equipment Decontamination Procedure
• Step by Step, Cairo
• QUESTIONS ?

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INTERNATIONAL

• EUROPE
• Scotoil Group plc headquarters in Aberdeen,
  Scotland

MIDDLE EAST Alliance between Scotoil Services
(Middle East) Ltd and Gulf Environmental Company
LLC (GENCO), based in Abu Dhabi, UAE
NORTH AFRICA Oilfield Environmental Services
(OES) - JV company based in Cairo, Egypt
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OUR CREDENTIALS

• More than 20 years experience

• SCOAA Environment award recognising world class
  standards

• Operations meet exacting standards of regulatory
  and assessment bodies

• ISO 90012000, ISO 14001

• FPAL

• Scotlands Health at Work Gold Award

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OUR CLIENTS
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OUR SERVICES

• Equipment decontamination

• Removal and disposal of NORM

• Instrumentation

• Onshore and offshore RPS

• Emerging technologies in water purification and
  land remediation

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EQUIPMENT DECONTAMINATION

• High Pressure
• Generally for component parts and tubulars
• Ultra High Pressure - Trials
• More efficient tubular cleaning
• Increased throughput
• More effective cleaning of lead contaminated
  tubulars

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REMOVAL AND DISPOSAL OF NORM

• UKs first authorised NORM removal and disposal
  facility

• Disposal facility regulated by SEPA

• Environment controls through independent impact
  assessments and monitoring

• Accountability - operational controls and
  licensed disposal route

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INSTRUMENTATION SERVICES

• Scotoil Services offers a complete radiological
  instrumentation package
• Equipment training
• Sales
• Rental
• Repair
• Calibration
• Certification

MINI 900 SERIES MONITOR
ELECTRA CONTAMINATION METER
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RPS SERVICES

• Radiological surveys

• RPS control during workovers etc.

• Induction training

• Personnel monitoring

• Documentation

• Supply of appropriate PPE

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WHAT IS NORM SCALE?

• Formation water contains naturally-occurring
  mineral salts

• These salts can come out of solution in contact
  with injected water

• Radium may be present in minute concentrations

• Naturally radioactive, radium may mean the scale
  is classified as radioactive

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UNITS OF MEASUREMENT

• Specific Activity
• Activity per gram i.e. Bq/gram

• Surface Contamination
• Activity per cm squaredi.e. Bq/cm2
• A contamination monitor can measure surface
  activity

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DOSE RATES

• Measured in sieverts large unit - usually
  prefix sub multiplier e.g.1 µSv micro sievert

• Dose rates greater than 2.5 µSv/hr mark
  supervised areas

• Dose rates greater than 7.5 µSv/hr mark
  controlled areas

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WHAT IT MEANS FOR THE INDUSTRY

• Naturally occurring radioactive material is a
  major issue for
• field operation
• decommissioning

• NORM scale build up can render equipment
  inoperable

• Classed as radioactive, its removal and disposal
  must be carefully controlled

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TYPES OF EQUIPMENT SUBJECT TO NORM - ROGUES
GALLERY

• Colour varies from white through to brown

• Barium Sulphate scale is most common

• Spongy open appearance if large quantities of
  scale inhibitor used

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THE HAZARDS

• Radiation dose

• Inhalation

• Ingestion

• Cuts and abrasions

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VALVE
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VALVE
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MISCELLANEOUS VALVES
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VALVES ACTUATORS
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PIPEWORK
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HEAT EXCHANGER
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HEAT EXCHANGER CLEANED DE-SCALED
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OIL COOLER PLATES
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LOOSE SCALE
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PERFORATED TUBING - INTERNAL EXTERNAL
CONTAMINATION
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PUMP IMPELLER ASSEMBLY
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DOWNHOLE ESP PUMP - STRIPPED DOWN
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DOWNHOLE ESP PUMP PARTS - DIFFUSERS IMPELLERS
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ESP PUMP DIFFUSERS
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MECHANICAL SEALS DOWNHOLE SAFETY VALVE
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XMAS TREES
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CASING
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PITTED TUBULAR
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SPIRAL SCALE
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EQUIPMENT DECONTAMINATION PROCEDURE

• Step by Step

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EQUIPMENT DECONTAMINATION

• Written notification from the Operator of NORM
  consignment
• Identified offshore by platform/rig RPS
• Scotoil authorised to accept contaminated
  equipment
• Contamination levels monitored on arrival

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• Unload equipment into Controlled Area
• Enter job details on computerised Job Register

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• Scale sample passed to Laboratory
• Radiological analysis, total activity, type of
  scale

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• Arrival, Documentation Check Inspect
• Tubulars - check internal, external pin, box,
  scale thickness, activity for each joint
• Unique Job No - waterproof tag, client,
  location
• Complete monitoring records for each item or
• component part
• All joints capped or re-wrapped

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• Decontamination of Equipment
• Pre-cleaning prior to stripdown
• Stripdown if required
• Soluble abrasives can be used to assist
  decontamination
• Full decontamination
• Post, Final QC Inspection

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• Ultra High Pressure Pump Unit
• 36,000 psi working pressure at 42 litres per
  minute
• High Pressure Aqua Pumps
• 10,000 psi working pressure at 82 litres per
  minute

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• Tubular Decontamination System
• High Pressure jetting combined with lance mounted
  cutter Rattler head

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• Tubular Ends - Fully Enclosed Hoods
• All Scale cleaning
• water collected to sump

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• Tubular Ends - Fully Enclosed Hoods

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• Lance Mounted Cutter Head
• Rattler
• Machine with hardened
• cutting surfaces

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• All Scale ground down to less than lt250 microns
• All Scale passed through screens
• Oil Separator - two stage
• Controlled discharged to sea regulated by SEPA
• Post Cleaning Monitor Record
• Final Check Monitor Record

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SCALE DISPOSAL

• Results of radiochemical analysis on computerised
  Job Register
• Certificate of Scale Disposal - master job file
• Quarterly Scale Disposal computerised records
• Quarterly Sea Survey - results, particle size
  analysis to radiation specialists at SEPA
  (Scottish Environment Protection Agency)

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• Compliance with HSE Regulations
• Ionising Radiation Regulations 1999
• Control of Pollution Act 1974
• Radiation Substances Act 1993
• Environmental Pollution Act 1990
• Registered under the pipeline Act 1962
• Authorisation for the Accumulation and Disposal
  of Radioactive Waste
• Regulated by SEPA (Scottish Environment
  Protection Agency)

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DECONTAMINATION PROCESS FOR NORM CONTAMINATED
OILFIELD EQUIPMENT 6th OCTOBER CITY - EGYPT
Davidson House, Miller Street, Aberdeen, AB11
5AN, Scotland, UK Telephone [phone]
Fax [phone] enquiries_at_scotoil.co.uk
www.scotoil.co.uk
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Oilfield Environmental Services is a joint
Venture company between Scotoil (UK) and Minaoil
(Egypt). Scotoil, bringing 20 years of North Sea
NORM decontamination experience and Minaoil,
bringing 20 years of Egyptian oil and gas
industry expertise joined forces in 2001 to
combat the NORM problem in Egypt. Oilfield
Environmental Services was formed and is now
operational and fully licensed by the Egyptian
Authorities including EGPC, AEA, MOE and GAFI.
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The following presentation, details the basic
decontamination process of NORM contaminated
equipment at Oilfield Environmental Services
decontamination facility, situated in 6th October
City, Egypt. For the purpose of this
presentation we will follow a contaminated ESP
and resulting waste from arrival at OES until the
equipment is despatched to the client in a safe,
certified and contamination free state.
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• ON ARRIVAL, THE CONTAMINATED ITEM IS OFFLOADED
  AND DIRECTED TO OES RADIATION CONTROLLED AREA.

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THE EQUIPMENT IS ALLOCATED AN OES JOB NUMBER,
MONITORED AND TAGGED.
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THE ACCESSIBLE SURFACES ARE PRE-CLEANED PRIOR TO
DISMANTLING.
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• THE EQUIPMENT IS DISMANTLED BY EITHER OES
  PERSONNEL
• OR A SPECIALIST THIRD PARTY
• RADIOLOGICALLY SUPERVISED BY OES.

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• EACH PART IS GIVEN AN INDIVIDUAL IDENTIFICATION
  NUMBER,
• MONITORED AND TAGGED.

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• THE BREAKDOWN AREA IS DECONTAMINATED, FLUSHING
  ALL
• CONTAMINENTS INTO THE CLOSED LOOP DRAINAGE AND
• FILTRATION SYSTEM.

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• EACH PART IS INDIVIDUALLY DECONTAMINATED

BY MEANS OF..
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• STATE OF THE ART UHP WATER JETTING EQUIPMENT.

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• RESULTING RADIOACTIVE WASTE IS COLLECTED IN
• A CLOSED LOOP SIX STAGE FILTRATION AND
• WATER RECYCLING SYSTEM.

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• FOLLOWING DECONTAMINATION, EQUIPMENT IS MONITORED
• AND SURVEYED FOR VISUAL SCALE. IF ACCEPTED,
  INTERIM
• CHECK TAPE IS ATTACHED TO THE EQUIPMENT.

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• EQUIPMENT IS NOW MONITORED BY A HEALTH PHYSICIST
• AT THE QUALITY CONTROL STAGE.

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• FOLLOWING ACCEPTANCE BY THE QC DEPARTMENT AND
• CLIENT, THE EQUIPMENT IS SUITABLY WRAPPED AND
  EITHER
• BOXED, PALLETISED OR RETURNED TO ITS ORIGINAL
  CONTAINER.

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• THE EQUIPMENT IS CLEAN, SAFE, CERTIFIED AND READY
  FOR
• CUSTOMER UPLIFT.

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• THE FILTRATION SYSTEM IS CLEANED, TRANSFERRING
  ALL
• WASTE TO THE CLIENTS NORM STORAGE CONTAINER.

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• THE ENTIRE CONTROLLED AREA IS SURVEYED BY A
  QUALIFIED
• HEALTH PHYSICIST TO ENSURE THAT IT IS FREE OF
• CONTAMINATION.

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• WHEN EITHER THE QUANTITY OF NORM WASTE OR THE
  DOSE RATE HAS EXCEEDED A CERTAIN LEVEL, OES
  REQUEST THAT THE CLIENT AND THE EGYPTIAN ATOMIC
  ENERGY REMOVE THE WASTE FROM OES.

THE SECURED CONTAINERS ARE TRANSFERRED BY
SPECIALISED AEA TRANSPORTATION FOR FINAL
DISPOSAL.
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• AT THE TIME OF EQUIPMENT DESPATCH, A FULL REPORT
  IS SUBMITTED TO THE CLIENT WITH ALL RELEVANT
  DOCUMENTATION. THIS TYPICALLY INCLUDES
• EQUIPMENT / PART RECORDS
• WORK SUMMARY
• DISMANTLING DETAILS
• RADIATION ANALYSIS RESULTS FROM EACH STAGE IN THE
  PROCESS
• RADIATION SUMMARY
• QC DOCUMENTATION
• NORM WASTE DATA
• DECONTAMINATION CERTIFICATE

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QUESTIONS?