PTT Exploration and Production Public Company Limited (PTTEP) strive at all times to ensure that incidents affecting the health and safety of its employees, contractors and members of the public, and the ecological environment shall not occur. The NORM: Radionuclide Analysis Project was initiated in 2003 by the Nuclear Technology Department, Chulalongkorn University, with the cooperation of academic institutions, private enterprises, the Thai government and private service companies, to develop systematic methodologies for characterization of NORM in Thai industry and acquire useful data regarding NORM characteristics throughout the industries for improvement of safety hygiene and environmental standards.

The project has revealed systematic methodologies to determine the concentrations of NORM content in all potential sources and receptors-the "Cradle to Grave" concept.

The NORM characterization project at PTTEP was conducted from 2003 to 2006 by focusing on 3 main areas: 1) PTTEP1 onshore oil production asset, 2) Bongkot offshore gas & condensate production asset, and 3) PTTEP Petroleum Development Support Base, where used equipment and wastes from Bongkot were stored. In this paper, the application of the developed methodologies and results obtained from the long-term and systematic study on NORM characterization of studied areas numbers 2 and 3 above will be presented.

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