ANO-1 Experiences Using the BWOG Structural Tools to Prepare AgingManagement Reviews for License Renewal

摘要

ANO-1 submitted an application to the NRC to extend its operating license for an additional 20 years on January 31,rn2000. NRC regulations governing the license renewal process require the preparation of an Integrated Plant Assessmentrn(IPA) to demonstrate that the effects of aging on systems, structures and components (SSCs) at ANO-1 are adequatelyrnmanaged. ANO participated in the B&W (now Framatome) Owners Group (BWOG) Generic License Renewal Programrn(GLRP) in developing the B&WOG "Aging Effects for Structures and Structural Components", commonly referred to thern"Structural Tools". The Structural Tools document is a generic evaluation based on material (concrete, steel, etc.) andrnenvironments (protected from weather, exposed to weather, exposed to fluids, etc.) that assist the user in performing anrnevaluation of aging effects (cracking, change in material properties, loss of material, etc.). The purpose of the tools is tornprovide consistent criteria for identifying aging effects and to allow personnel other than material experts to perform agingrnmanagement reviews. Using the structural tools, considerable time was saved in preparing Aging Management Reviewrn(AMR) reports since the reviewer did not have to independently research potential causes of aging effects for the materialsrnand environments being reviewed. This paper summarizes the ANO-1 experiences gained in preparing AMR reportsrnutilizing the Structural Tools.