Abstract
The IAEA publication EPR-NPP-OILs-2017, OPERATIONAL INTERVENTION LEVELS FOR REACTOR EMERGENCIES AND METHODOLOGY FOR THEIR DERIVATION [1], provides selected default OIL values, describing a methodology for their derivation, as well as practical tools and recommendations for their use. IAEA recommends that tools and default OIL values be directly integrated into national emergency arrangements or reviewed and modified as necessary to meet the specific emergency preparedness and response arrangements. The Institute of Radiation Protection and Dosimetry (IRD) has a Radiological Assessment TEAM (EAR) as part of its Radiation Emergency Response System. Brazilian regulatory standards address actions for radiation emergencies encompassing necessary measures to assess public exposures, intervention levels to protect the public and recommendations for protective actions as, evacuation, relocation, sheltering and food restrictions. The objective of this paper is to present a discussion the use these OILs, to compare those ones established by the Brazilian standards and to propose a methodology on how OILs can be used by EAR/IRD in case of an emergency at the Brazilian NPP.
Highlights
Operational Interventional Levels (OILs) are operational criteria that allow the prompt implementation of protective actions and other response actions on the basis of monitoring results that are readily available during a nuclear or radiological emergency [1]
IAEA recommends that tools and default OIL values provided in such publication be directly integrated into national emergency arrangements or be reviewed and modified as necessary to meet the specific emergency preparedness and response arrangements of the country in which they will be applied
The objective of this work is to discuss the OILs methodology presented in the recent IAEA publication EPR-NPP-OILs-2017, to compare them to those presented in Brazilian standards and to present how OILs will be used by EAR/Institute of Radiation Protection and Dosimetry (IRD) as tool in case a NPP emergency
Summary
Operational Interventional Levels (OILs) are operational criteria that allow the prompt implementation of protective actions and other response actions on the basis of monitoring results that are readily available during a nuclear or radiological emergency [1]. The use of OILs as part of the protection strategy for nuclear and radiological emergencies is recommended by IAEA Safety Standards Series No GSR Part 7 [2]. The IAEA publication EPR-NPP-OILs-2017, OPERATIONAL INTERVENTION LEVELS FOR REACTOR EMERGENCIES AND METHODOLOGY FOR THEIR DERIVATION [1], provides selected default OIL values, together with a detailed description of the methodology for their derivation, as well as practical tools and recommendations for their use. IAEA recommends the use of OILs as tool to allow the decision makers immediately action, so it is required the use of OILs as part of the protection strategy for nuclear and radiological emergencies. The technical guidance for response actions and OILs contained in IAEA-
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