Hungary: Special Applications and Developments

There are two basic goals set with the adoption of a new code: improving safety performance and improving cost effectiveness of plant operation. The changes to the applicable codes and standards in the Paks NPP in Hungary included the following: — Engineering support of operation and maintenance, based on the new code which made state of the art implementation of inspection, testing and maintenance possible. — New safety and structural analyses, which allowed for comparisons of the results against the most recent regulatory requirements in the interest of safety and performance. — Indirect impact of safety improvements on facilitating national and international acceptance of the NPP lifetime extension plans. — Compliance with the new code requirements, which provided the opportunity for an extension of the original ISI cycle time. This intended extension of the inspection interval has a major potential for enhancing the cost effectiveness of future operation and maintenance