PDO NORM Storage Facilities Ahmed Al-Sabahi Corporate Environmental Advisor PDO NORM Storage Facilities PDO Has two Storage facilities: Zualayah Storage area Bahja Storage Facility 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 2.5 1 Sv/hr. 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. 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) Zauliyah NORM Storage Yard Contaminated tubularsTotal number-2675 End capped and parts that are rusted covered with polyethylene NORM Storage Yard 6” Sahmah -Zualiyah line 10” -Zualiyah- Sahmah line 8” Hasirah -Zualiyah line Drainage pit MAIN GATE Water disposal line TANK Some of the drums in the Storage Contaminated tubular from Zauliyah –5 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 NORM DESIGNATED AREA-PDO NORM CONTAMINATION =10 c/s Dose Rate= 0.11-0.29Sv/h RADON in Gas= 66Bq/m3 LEKHWAIR NORM CONTAMINATION = 400 c/s Dose Rate = <0.33-0.47Sv/h LKH-128L=660 Bq/g LPS-T-2612=260Bq/g NORM CONTAMINATION = 0 c/s Dose rate = <0.10Sv/h RADON in Gas = 61 Bq/m3 MAF Mazoon DHULAIMA NORM CONTAMINATION = 20 c/s DOSE RATE = 0.12-0.25Sv/h RADON IN GAS - 66 NORM CONTAMINATION = 60 c/s Dose Rate= 0.22-0.27Sv/h RADON in Gas= 435Bq/m3 NATIH FAHUD YIBAL NORM CONTAMINATION = 0 c/s DOSE RATE = <0.12 Sv/h RADON IN GAS - 86Bq/M3 MUSALLIM TAWF DAHM NORM CONTAMINATION = 18c/s DOSE RATE = 0.19-0.25mSv/h RADON IN GAS =317 Bq/M3 SAIH NUHAYDA SAIH RAWL G.NORTH MABROUK QALN-ALARM BARIK NORM CONTAMINATION = 2500 c/s DOSE RATE = 1.99-2.40mSv/h RADON IN GAS -44Bq/M3 NORM CONTAMINATION = 60 c/s Dose Rate= 0.25-0.50Sv/h RADON in Gas= 107Bq/m3 AL-GHUBARA NORM CONTAMINATION = 0 c/s DOSE RATE = <0.12mSv/h RADON IN GAS = 260Bq/m3 ZL-5 =592 Bq/g ZAULIYAH HASIRAH ANZAUZ NORM CONTAMINATION = 20 c/s DOSE RATE = 0.15-0.20mSv/h NORM CONTAMINATION = 0 c/s DOSE RATE = <0.12Sv/h RADON IN GAS= 47Bq/m3 WAFRA WAFRA-10 = 1110Bq/g SUWAIHAT HASIRAH- ZAULIYAH LINE-CONTAMINATED LINE = 60 NORM CONTAMINATION = 0 c/s Dose Rate= <0.12Sv/h RADON in Gas= 407Bq/m3 AL HUWAISAH SAYYALA c/s BAHJA SADAD NORM CONTAMINATION = 60 c/s DOSE RATE = 0.15-0.18Sv/h MUKHAIZNA NIMR NORM CONTAMINATION = 0 c/s DOSE RATE = <0.12 Sv/h RADON in Gas= 430Bq/m3 AMIN NORM CONTAMINATION \ = 15 c/s DOSE RATE = 0.12Sv/h RADON IN GAS = 46Bq/m3 NORM CONTAMINATION = 30 c/s Dose Rate= <0.18-0.24Sv/h RADON in Gas = 53 Bq/m3 SIMSIM AMAL MARMUL AL BURJ RAHAB NORM CONTAMINATION = 20 c/s DOSE RATE = 0.12-0.15Sv/h RADON IN GAS = 43Bq/m3 QAHARIR THULEILAT NORM CONTAMINATION = 20 c/s Dose Rate = 0.12-0.25Sv/h RADON in Gas - N/D 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 2.5Sv/h PPE should be used when dose rate is above 7.5Sv/h. NORM AREA NORM TRACES NORM TRACES Contamination reading are back-ground subtracted Note-NORM traces area,procedures must be followed Oil pi pel in e c/s-counts/seconds Gas Bq/g -Becquerel/ grams Bq/m3-Becquel/ cubic meter Sv/h - Sievart/hour pi pe lin e 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 Present NORM Inventory Expected drums = 7000-8000 Down hole equipments = 40 – 50 pieces (about 4 meters length) Tubing’s (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 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 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) NORM facility 400 m Entrance * Concrete pad 100 m x 50 m Rest Room & Toilet 400 m gate 2 Pits Sludge Storage Source Pit 100m*10m*1m depth Scrap metal Drum storage 50m x 25m 50m x 25m Tublars 50m x 25m Note:- * Not decided yet due to change in design basis. CSM32 to advise 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 1st PIT 2nd PIT TUBALAR AREA METAL AREA DRUMS YARD SOURCE PIT Rest Room