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51313-02572-Application of DA Approaches & Methodologies to Cathodically Protected Nuclear Waste Transfer Lines

Picture for Application of DA Approaches & Methodologies to Cathodically Protected Nuclear Waste Transfer Lines
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Product Number: 51313-02572-SG
ISBN: 02572 2013 CP
Author: Megan Dahl
Publication Date: 2013
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Pipeline Hazardous Material Safety Administration (PHMSA) regulators do not require cathodically protected pipelines located within nuclear facilities to be assessed by External Corrosion Direct Assessment (ECDA) or any other method used to ensure integrity.  A case study is presented using the direct assessment process on pipelines in a nuclear environment.  It is essential to remove the threat of external corrosion in order to prevent nuclear contamination of the public and environment.  It was determined that the nuclear contamination threat requires sufficient historical and on-going probe/coupon monitoring data information about the condition of each coating layer and an understanding of historic and current cathodic protection levels in order to anticipate where corrosion may be occurring.  There is therefore a need for a fully auditable and systematic process by which the external corrosion threat can be adequately assessed.  An approach is described for the monitoring integration of outside data and analysis of this information in order to identify whether coating deterioration accompanied by external corrosion is a threat for these nuclear waste transfer lines.

Pipeline Hazardous Material Safety Administration (PHMSA) regulators do not require cathodically protected pipelines located within nuclear facilities to be assessed by External Corrosion Direct Assessment (ECDA) or any other method used to ensure integrity.  A case study is presented using the direct assessment process on pipelines in a nuclear environment.  It is essential to remove the threat of external corrosion in order to prevent nuclear contamination of the public and environment.  It was determined that the nuclear contamination threat requires sufficient historical and on-going probe/coupon monitoring data information about the condition of each coating layer and an understanding of historic and current cathodic protection levels in order to anticipate where corrosion may be occurring.  There is therefore a need for a fully auditable and systematic process by which the external corrosion threat can be adequately assessed.  An approach is described for the monitoring integration of outside data and analysis of this information in order to identify whether coating deterioration accompanied by external corrosion is a threat for these nuclear waste transfer lines.

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