PDO NORM Storage Facilities

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PDO NORM Storage Facilities

• Ahmed Al-Sabahi
• Corporate Environmental Advisor

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PDO NORM Storage Facilities

• PDO Has two Storage facilities
• Zualayah Storage area
• Bahja Storage Facility

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Storage of Radioactive Materials SP-1170

• All NORM contaminated items or materials must be
  taken to the PDO designated storage site in
  Zauliyah as soon as reasonably practicable. The
  NORM storage area must comply with the following
• The NORM storage areas must be protected with
  proper fencing and security so that uncontrolled
  entry is not possible.
• There must be proper signage (pictorial and
  written in English and Arabic) around the fence
  so that the hazards are understood by everybody.
• A contour of dose rates for the site shall be
  available through the supervisor.
• People who are given access to the site are
  briefed on the location of hazards.
• The key for access to the site must only be
  issued to authorised personnel and must be signed
  out and back into the custodians control.
• The dose rate outside at the fence of the storage
  facility shall not exceed 2.5 1 ?Sv/hr.

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Zauliyah Storage Facility

• In 1994 a pig sample from Hasirah Zauliyah line
  was found to have radioactive reading above
  background level
• comprehensive survey for Naturally occurring
  radioactive material (NORM) was conducted in
  Zauliyah station
• high contamination reading were observed and
  materials.
• This discovery lead to have a NORM storage area
  in Zauliyah.

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What we are storing in Zualiyah

• Tubulars
• Contaminated Sludge ( in Drums).
• X-Mass trees
• Cables
• Scrap metals
• The NORM radioactive material prior to being
  placed in the storage were cemented and
  solidified, in thick numbered steel drums and
  transferred to an enclosed, top open wall
  (10L15W1.5H)

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Some of the drums in the Storage
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Contaminated tubular from Zauliyah 5
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Present NORM Storage Facility

• AD Hoc facility set up in Zauliya
• Does not meet required standards or
  specifications
• Licensed but threat of license revocation exists
  due to standards breaches.
• Increasing quantities have increased dose rate to
  dangerous levels
• RAC (Radiation Advisory Committee Approved
  Setting up permanent facility

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NORM DESIGNATED AREA-PDO
NORM CONTAMINATION 0 c/s Dose rate
lt0.10mSv/h RADON in Gas 61 Bq/m3
NORM CONTAMINATION 10 c/s Dose Rate
0.11-0.29mSv/h RADON in Gas 66Bq/m3
MAF
LEKHWAIR
NORM CONTAMINATION 400 c/s Dose Rate
lt0.33-0.47mSv/h LKH-128L660 Bq/g LPS-T-2612260Bq
/g
Mazoon
DHULAIMA
NORM CONTAMINATION 60 c/s Dose Rate
0.22-0.27mSv/h RADON in Gas 435Bq/m3
NORM CONTAMINATION 20 c/s DOSE RATE
0.12-0.25mSv/h RADON IN GAS - 66
NATIH
FAHUD
YIBAL
NORM CONTAMINATION 0 c/s Dose Rate
lt0.12mSv/h RADON in Gas 407Bq/m3
NORM CONTAMINATION 0 c/s DOSE RATE lt0.12
mSv/h RADON IN GAS - 86Bq/M3
AL HUWAISAH
MUSALLIM
SAIH NUHAYDA
TAWF DAHM
NORM CONTAMINATION 60 c/s Dose Rate
0.25-0.50mSv/h RADON in Gas 107Bq/m3
G.NORTH
SAIH RAWL
NORM CONTAMINATION 18c/s DOSE RATE
0.19-0.25mSv/h RADON IN GAS 317 Bq/M3
QALN-ALARM
MABROUK

AL-GHUBARA
BARIK
NORM CONTAMINATION 2500 c/s DOSE RATE
1.99-2.40mSv/h RADON IN GAS -44Bq/M3 ZL-5 592
Bq/g
NORM CONTAMINATION 0 c/s DOSE RATE
lt0.12mSv/h RADON IN GAS 260Bq/m3
ZAULIYAH
ANZAUZ
HASIRAH
NORM CONTAMINATION 0 c/s DOSE RATE
lt0.12mSv/h RADON IN GAS 47Bq/m3
NORM CONTAMINATION 20 c/s DOSE RATE
0.15-0.20mSv/h
WAFRA
WAFRA-10 1110Bq/g
SUWAIHAT
HASIRAH- ZAULIYAH LINE-CONTAMINATED LINE 60 c/s
NORM CONTAMINATION 20 c/s DOSE RATE
0.12-0.15mSv/h RADON IN GAS 43Bq/m3
SAYYALA
BAHJA
NORM CONTAMINATION \ 15 c/s DOSE RATE
0.12mSv/h RADON IN GAS 46Bq/m3
MUKHAIZNA
NORM CONTAMINATION 60 c/s DOSE RATE
0.15-0.18mSv/h
SADAD
NORM CONTAMINATION 30 c/s Dose Rate
lt0.18-0.24mSv/h RADON in Gas 53 Bq/m3
NIMR
NORM CONTAMINATION 0 c/s DOSE RATE lt0.12
mSv/h RADON in Gas 430Bq/m3
SIMSIM
NORM CONTAMINATION 20 c/s Dose Rate
0.12-0.25mSv/h RADON in Gas - N/D
AMIN
AMAL
MARMUL
AL BURJ
RAHAB
QAHARIR
THULEILAT
LE
G
E
N
D
NORM AREA
Specifications. NORM contamination- reading 3
times the back-ground on the contamination meter
is a NORM trace or NORM suspect area.- NORM
area - Area confirmed to have materials with
quantitative radioactive level of more than 100
Bq/g Dose rate-Accepted limit is below 2.5mSv/h
PPE should be used when dose rate is above
7.5mSv/h. Contamination reading are back-ground
subtracted Note-NORM traces area,procedures must
be followed c/s-counts/seconds Bq/g -Becquerel/
grams Bq/m3-Becquel/ cubic meter Sv/h -
Sievart/hour
NORM AREA
NORM TRACES
NORM TRACES
Oil
pi
pel
in
e
Gas
pi
pe
lin
e
LAST UP DATED ON 24/02/99 - Compiled and
prepared by RASHID AL-ZAKWANI-TKL2B
Interior-Radiation-Focal-point
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Issues Due to Lack of NORM Storage

• Many Tanks cleaning delayed
• Mounting Inventory of NORM materials
• Non compliance to HSE-MS or ISO-14001
• Potentially serious HSE risks

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Present NORM Inventory

• Expected drums 7000-8000
• Down hole equipments 40 50 pieces (about 4
  meters length)
• Tubings (3/4) 20000 pieces.
• Pipes 50 pieces (different sizes and lengths).
• X- Mass trees 10 pieces.
• Cables ( down hole work) 3000m
• Suspected NORM Sludge 1500m³

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NORM Strategy

• Storage Facilities in Bahja as per SP-1170
• MRME constructing NORM disposal facility in 2
  years
• Operation of facility to be managed by Waste
  Management Contractor

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Storage Facility Details

• Total Area 400m x 400m
• All the area should be lined
• Temporary storage for the incoming sludge
• Toilets
• Equipment PPE Store
• Drummed sludge only - (50 m x 25 m x 0.4 m area)
• Contaminated equipment (tubulars, esps) - (50 m
  x 25 m area)
• Scrap material/metals (50 m x 25 m area)
• Dedicated concrete pits for storage of
  liquid/bulk sludge from tanks (100m100m1m)

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NORM facility
400 m
Entrance
Concrete pad 100 m x 50 m
Rest Room Toilet
400 m
gate
2 Pits Sludge Storage 100m10m1m depth
Source Pit
Tublars 50m x 25m
Drum storage 50m x 25m
Scrap metal 50m x 25m
Note- Not decided yet due to change in design
basis. CSM32 to advise
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Project Phases

• Phase 1 project started in June was completed
  in August 2004 as per agreed plan.
• Preparation of the site
• Fencing of the site
• Phase 2 under construction and target completion
  Dec.04.
• Two HDPE lined pits being built
• Tubular Area
• Metal Area
• Drum Yard
• Source Pit
• Toilets
• Phase3 will be mid June 2005 and it will include
• for additional 4 pits decontamination area
• Initiate development of decontamination facility
• Determine and agree on long term disposal options
  for NORM
• Tender out the design for the decontamination
  facility

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1st PIT
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2nd PIT
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TUBALAR AREA
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METAL AREA
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DRUMS YARD
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SOURCE PIT
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Rest Room