Bapetco NORM Control Case Study IDENTIFY ASSESS CONTROL & RECOVERY

Bapetco NORM Control Case Study

IDENTIFY

ASSESS

CONTROL&RECOVERY

Vessel Inspection

Before Vessel Entry!Carryout TENORM

Monitoring

* Classify Area *Continue Monitoring

* Implement the appropriate safe working

procedures

Yes There is TENORM Contamination

Normal Working Procedure

No There is No TENORM Contamination

Compile TENORM Monitoring Data

TENORM Management of a Specific Activity

If there is solid waste DO Specific Activity Analysis

All Solid waste stored in drums/container must be labelled.

See Appendix 6.0

Is Exterrnal Radiation

and or Surface Contamination

Greater Than Clean Area level ?


Temporary transfer of Licensed HSE advisor from Bed area to Obaiyed.

NORM Management system implementation.

PPE availability.

Set an agreement with AEA.


Licensed HSE advisor from Bed area to Obaiyed.

TO carry out the required NORM measurements before starting any activity in suspected area.

To advise the suitable PPE required for certain job.

To follow up the implementation of work instruction and procedures mentioned in Bapetco NORM management system .


NORM Management system

This system was established since 1996, in a form of work instructions and procedures . All the required information were collected together with surveys in one Manual to lay down how the hazards of NORM are managed within BAPETCO.

NORM Manual was issued in September 2002 and distributed for implementation.


OBJECTIVE

The purpose of this document is to lay down how the hazards of Ionizing Radiation are managed within BAPETCO.

Radiological control strategies in Bapetco have been integrated within the general HSE management system. These strategies comprise measures against Naturally Occurring Radioactive Materials (NORM) and industrial radioactive sources on the site, to perform the following objectives:

• To reduce exposure to external radiation.• To prevent internal contamination. • To maintain environmental protection.


BAPETCO Policy Statement • Protect its personnel, contractors and the environment against the

hazards of exposure to ionizing radiation due to BAPETCO activities.

• Avoid uncontrolled releases of radioactive contaminated substances and to minimize the effects of past deposits

• Keep exposure As Low As Reasonably Achievable (ALARA) where exposure to ionizing radiation is not avoidable

• Prevent any exposure to ionizing radiation levels that result in an

effective dose of more than 1 mSv/y above background to non-classified personnel and to the public


Management - Policy, standards, strategy, audit.

- Keep workers, Bapetco staff and contractors informed regarding NORM situation.

- Ensure adequate environmental protection.HSE Department - Contact National Regulatory

- Develop and update procedures

- Support Management efforts and field implementation efforts.

- Inform Management of progress, results and compliance with standards.

- Awareness training

- Follow up dosimeteric system.

- Keeping records and data.

NORM MANAGEMENT RESPONSIBILITIES


Consultant: - Provide technical advise.

- Provide and analyze dosimeters.

- Training.Fields - Implement policy and procedures.

- Ensure that employees adhere to policy and - procedures.

- Provide Personal Protective Equipment.

- Follow up the personnel dosimeteric system in quarterly bases.

- Carry out NORM survey by certified staff when required.

- Training

NORM MANAGEMENT RESPONSIBILITIES

Bapetco NORM Control Case StudyNORM MANAGEMENT SYSTEM

The Management System consists of the following elements:

• Prgramme plan

• Area Radiation Monitoring

• Personnel Monitoring

• Protective Equipment

• Training And Awareness

• Norm Handling Procedures

• Work Instruction

• NORM Waste Management

• Regulatory Rule No: Pet-1


PPE availability.


AEA agreement

Radiation survey for all units before and after opening.

Gamma spectrometric analysis for sludge samples to evaluate the radioactive content .

Identify the units which contain NORM with specific activities higher than 2 Bq/g.

Supervising the de-sludging operation and packing .

Identifying the NORM waste drums interims of radiation levels and registration numbers at the NORM store yard.


Activities carried out under supervision of AEA:

Removal of the Man hole.

Strainer Cleaning.

De-sludging of the API.

De-sludging of injection water Tank (T 4401).


Removal of the Man hole Procedure

Wear proper PPE ( Disposal Coverall, Rubber Gloves, rubber boots, Dust mask ).

During cutting the drain pipes a container should be placed to host any spill.

Blocking all opening of the removed man hole.

Remove the Block to the surface and to be kept at the NORM store yard.

Cleaning the pipe connected to API by inward jetting in such a way that all sludge's are trapped inside.


NORM survey around Man Hole NORM measurements inside the Man hole

Watering the area around the Man hole blockRemoving Block by Crane


Blocking all opening of the removed man hole

Remove the Block to the surface Remove the Block to the surface

Block at the NORM store yard.


Strainer Cleaning Procedure.

Strainer to be transferred back from evaporation pond to API.

Strainer should be contained during transportation to avoid any spreading of NORM.

Cleaning can be done inside the API in such away that all loose contaminants are kept inside the bottom of the API


Contaminated Strainer at evaporation pondNORM measurements of Strainer

Strainer during cleaning inside the API. All contaminants are kept inside the API


Strainer after cleaning Strainer after cleaning


De-sludging of the API

Use of 12 inch pipe with controllable bottom is accepted .

The pipe should be washed from outside in the API before moving to the drums.

The drums should be coated from inside and outside by epoxy or similar material.

A plastic bag 1mm thick should be placed inside the drums to host the sludge.

The drums should be closed firmly.

All drums should be numbered, surveyed, documental and kept at the NORM store yard.


Pipe with controllable bottom used for De sluding

Washing the pipe from outside in the API before moving to the drums.

A plastic bag 1mm thick placed inside the drums to host the sludge.

API


All drums numbered ,documental and kept at the NORM store yard. Surveying the Drums

The pipe contains the NORM waste moving from API to the drums. Filling Drum with NORM waste


De-sludging of injection water Tank (T 4401)

Ventilations to eliminate most Hydrocarbon Vapors and to remove any Radon that the NORM may have generated.

De-sludging can be done by using vacuum truck to remove the existing materials from tank to the suitable drums.

EWI 463 to be followed.


Taking sludge sample for analysisSludge Sample

De-sludging done by vacuum truckFilling Drums with NORM waste


Conclusion:

48 Drums of contaminated sludge were collected from API and stored at NORM store yard.

193 Drums of contaminated sludge were collected from injection water Tank (T 4401) and stored at NORM store yard.

10 Drums of contaminated sand from the Man Hole pit.

NORM measurements reached background level on both Strainers and (T4401).

Documents

Bapetco NORM Control Case Study IDENTIFY ASSESS CONTROL & RECOVERY