1. PDO NORM Storage Facilities
Ahmed Al-Sabahi
Corporate Environmental Advisor

2. PDO NORM Storage Facilities
PDO Has two Storage facilities:
Zualayah Storage area
Bahja Storage Facility

3. 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 custodian’s control.
The dose rate outside at the fence of the storage facility shall not exceed Sv/hr.

4. 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.

5. 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 (10L*15W*1.5H)

6. Zauliyah NORM Storage Yard
10” -Zualiyah- Sahmah line
6” Sahmah -Zualiyah line
8” Hasirah -Zualiyah line
Drainage pit
TANK
MAIN GATE
Contaminated tubulars-
Total number-2675
End capped and parts that
are rusted covered
with polyethylene
Water disposal line
NORM Storage Yard

9. Some of the drums in the Storage

11. Contaminated tubular from Zauliyah –5

12. 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

13. NORM DESIGNATED AREA-PDO
NORM CONTAMINATION =10 c/s
Dose Rate= mSv/h
RADON in Gas= 66Bq/m3
NORM CONTAMINATION
= 0 c/s
Dose rate = <0.10mSv/h
RADON in Gas = 61 Bq/m3
MAF
NORM CONTAMINATION
= 400 c/s
Dose Rate = < mSv/h
LKH-128L=660 Bq/g
LPS-T-2612=260Bq/g
LEKHWAIR
Mazoon
DHULAIMA
NORM CONTAMINATION
= 20 c/s
DOSE RATE = mSv/h
RADON IN GAS - 66
NORM CONTAMINATION
= 60 c/s
Dose Rate= mSv/h
RADON in Gas= 435Bq/m3
NATIH
FAHUD
YIBAL
NORM CONTAMINATION
= 0 c/s
Dose Rate= <0.12mSv/h
RADON in Gas= 407Bq/m3
NORM CONTAMINATION
= 0 c/s
DOSE RATE
= <0.12 mSv/h
RADON IN GAS - 86Bq/M3
AL HUWAISAH
MUSALLIM
SAIH
NUHAYDA
TAWF DAHM
SAIH RAWL
G.NORTH
NORM CONTAMINATION
= 60 c/s
Dose Rate= mSv/h
RADON in Gas= 107Bq/m3
NORM CONTAMINATION = 18c/s
DOSE RATE = mSv/h
RADON IN GAS =317 Bq/M3
MABROUK
QALN-ALARM
BARIK
AL-GHUBARA
NORM CONTAMINATION
= 2500 c/s
DOSE RATE
= mSv/h
RADON IN GAS -44Bq/M3
ZL-5 =592 Bq/g
NORM CONTAMINATION = 0 c/s
DOSE RATE = <0.12mSv/h
RADON IN GAS = 260Bq/m3
ZAULIYAH
HASIRAH
ANZAUZ
NORM CONTAMINATION
= 0 c/s
DOSE RATE = <0.12mSv/h
RADON IN GAS= 47Bq/m3
NORM CONTAMINATION
= 20 c/s
DOSE RATE
= mSv/h
WAFRA
WAFRA-10 = 1110Bq/g
HASIRAH- ZAULIYAH LINE-CONTAMINATED LINE
= 60 c/s
SUWAIHAT
SAYYALA
BAHJA
NORM CONTAMINATION
= 20 c/s
DOSE RATE = mSv/h
RADON IN GAS = 43Bq/m3
NORM CONTAMINATION = 60 c/s
DOSE RATE = mSv/h
NORM CONTAMINATION \
= 15 c/s
DOSE RATE
= 0.12mSv/h
RADON IN GAS
= 46Bq/m3
SADAD
MUKHAIZNA
NIMR
NORM CONTAMINATION = 30 c/s
Dose Rate= < mSv/h
RADON in Gas = 53 Bq/m3
NORM CONTAMINATION
= 0 c/s
DOSE RATE = <0.12 mSv/h
RADON in Gas= 430Bq/m3
AMIN
SIMSIM
NORM CONTAMINATION
= 20 c/s
Dose Rate = mSv/h
RADON in Gas - N/D
AMAL
MARMUL
AL BURJ
RAHAB
THULEILAT
QAHARIR LE G E N D
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 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

14. 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

15. Present NORM Inventory
Expected drums =
Down hole equipments = 40 – 50 pieces (about 4 meters length)
Tubing’s (3/4”) = pieces.
Pipes = 50 pieces (different sizes and lengths).
X- Mass trees = 10 pieces.
Cables ( down hole work) = 3000m
Suspected NORM Sludge = 1500m³

16. 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

17. 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, esp’s) - (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 (100m*100m*1m)

18. NORM facility 400 m Entrance * Concrete pad Rest Room & Toilet 400 m
100 m x 50 m
Rest Room & Toilet
400 m
gate
2 Pits
Sludge Storage
100m*10m*1m depth
Source Pit
Tublars
50m x 25m
Scrap metal
50m x 25m
Drum storage
50m x 25m
Note:- * Not decided yet due to change in design basis. CSM32 to advise

19. 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

20. 1st PIT

21. 2nd PIT

22. TUBALAR AREA

23. METAL AREA

24. DRUMS YARD

25. SOURCE PIT

26. Rest Room