Full Content is available to subscribers

Subscribe/Learn More  >

Development of Component Specific Ageing Management Programmes for Mechanical Components at the NPP Paks

[+] Author Affiliations
Ágnes Jánosiné Bíró, Márton Osztheimer, Katalin Baumann-né Tanits

Electric Power Research Institute, Budapest, Hungary

Sándor Rátkai

Nuclear Power Plant Paks, Paks, Hungary

Sándor Baranya

Nuclear Power Plant Paks, Budapest, Hungary

Paper No. PVP2009-77504, pp. 393-402; 10 pages
  • ASME 2009 Pressure Vessels and Piping Conference
  • Volume 7: Operations, Applications and Components
  • Prague, Czech Republic, July 26–30, 2009
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4370-3 | eISBN: 978-0-7918-3854-9
  • Copyright © 2009 by ASME


The plant’s current ageing management practice is based on designer’s specifications and the more than 20 years of operation and maintenance experience. This practice meets the established rules and requirements in depth. In accordance with local regulations for long term operation the implementation of a comprehensive ageing management system for a defined scope of nuclear (safety classes 1–3+) components is required. As part of the comprehensive system, type ageing management programmes (TAMP) are developed, from which component specific programmes (SAMP) shall be developed and executed for the passive components of the concerned scope. This presentation summarizes the specific ageing management programmes of the WWER main components (reactor pressure vessel, steam generator, pressurizer, main coolant pump, main circulation pipeline, main gate valve) and of some other mechanical equipment (ECCS heat-exchangers, main steamline valves, steam generator drain expander tanks and emergency feedwater pumps). The development of the SAMPs is based on the TAMPs that describe the degradation processes (low-cycle fatigue, thermal ageing, irradiation damage, stress corrosion, boric acid corrosion, wear, local corrosion, irradiation assisted stress corrosion, loosening of threaded fasteners, swelling, high-cycle fatigue, general corrosion, thermal stratification fatigue, erosion, erosion-corrosion, water hammer, ground water corrosion, microbiological corrosion, deposition). The format and content of the SAMP comply with the domestic regulatory system and essentially follow the attributes of the US NRC’s 10 element ageing management programme (scope, prevention, parameters to be inspected, detection, monitoring-trending, acceptance criteria, corrective actions, feedback, administrative control, utilization of operating experience). During programme development, the review and, based on specific aspects, the examination of compliance of each established programme (technical review plan, ISI programme, ISI acceptance standards, maintenance instructions, water chemistry programmes, operational manuals, other inspection programmes etc.) dealing with the given component and affecting its ageing management were carried out, also taking account of the Aging Management (AM) review reports produced as part of the service life extension project. On the one hand the evaluation of the SAMP confirmed the effectiveness of the programmes currently applied, from ageing management aspects, and on the other hand, the recommended developments and enhancements help establish and strengthen the Comprehensive Ageing Management system.

Copyright © 2009 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In