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The aging of electrical, steering and control equipment in nuclear power plants. Study on Swedish and Finnish nuclear power plants; Aaldring av el-, styr- och reglerutrustning i kaernkraftverk. Studie kring svenska och finska kaernkraftverk

Technical Report:

Abstract

Nuclear Power Plants in Sweden and Finland were built during the period 1965-1985. Unlike conventional heat and power plants and most process industries, nuclear power plants are operated almost in its original form for a very long time. Therefore ageing of components, availability of spare parts and storage of spare parts, are very important questions for the nuclear industry. A number of technological shifts have occurred since the construction of the Swedish and Finnish nuclear power plants, in simplicity it can be described as a transition from analogue to digital equipment. This has made it even more difficult to find spare parts and replacements for original equipment. This project was initiated by Elforsk with the aim to improve the knowledge on electrical and I and C equipment in Swedish and Finnish nuclear power plants. The project has the following two main directions: - Understand the ageing processes - To indicate where the problems are or are expected The report consists of three parts; part 1 is a summary of the ageing management programs at the Swedish and Finnish nuclear power plants, components, spare parts, and retiring of competencies, part 2 consists of a review of international literature and Swedish and  More>>
Authors:
Kohopaeae, Jyrki; [1]  Jonsson, Nils-Olov; Lindbaeck, Jan-Erik [2] 
  1. Fortum Nuclear Services LTD, (Sweden)
  2. Vattenfall AB, (Sweden); and others
Publication Date:
Dec 15, 2010
Product Type:
Technical Report
Report Number:
ELFORSK-11-09
Resource Relation:
Other Information: 39 refs., 4 figs, 8 tabs.
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; NUCLEAR POWER PLANTS; SWEDEN; FINLAND; CONTROL EQUIPMENT; ELECTRICAL EQUIPMENT
OSTI ID:
1010787
Research Organizations:
Elforsk AB, Stockholm (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
TRN: SE1107057
Availability:
Available from: Elforsk AB, SE-10153 Stockholm, Sweden, E-mail: kontakt @elforsk.se or from homepage: http://www.elforsk.se
Submitting Site:
SWD
Size:
83 p. pages
Announcement Date:
Apr 11, 2011

Technical Report:

Citation Formats

Kohopaeae, Jyrki, Jonsson, Nils-Olov, and Lindbaeck, Jan-Erik. The aging of electrical, steering and control equipment in nuclear power plants. Study on Swedish and Finnish nuclear power plants; Aaldring av el-, styr- och reglerutrustning i kaernkraftverk. Studie kring svenska och finska kaernkraftverk. Sweden: N. p., 2010. Web.
Kohopaeae, Jyrki, Jonsson, Nils-Olov, & Lindbaeck, Jan-Erik. The aging of electrical, steering and control equipment in nuclear power plants. Study on Swedish and Finnish nuclear power plants; Aaldring av el-, styr- och reglerutrustning i kaernkraftverk. Studie kring svenska och finska kaernkraftverk. Sweden.
Kohopaeae, Jyrki, Jonsson, Nils-Olov, and Lindbaeck, Jan-Erik. 2010. "The aging of electrical, steering and control equipment in nuclear power plants. Study on Swedish and Finnish nuclear power plants; Aaldring av el-, styr- och reglerutrustning i kaernkraftverk. Studie kring svenska och finska kaernkraftverk." Sweden.
@misc{etde_1010787,
title = {The aging of electrical, steering and control equipment in nuclear power plants. Study on Swedish and Finnish nuclear power plants; Aaldring av el-, styr- och reglerutrustning i kaernkraftverk. Studie kring svenska och finska kaernkraftverk}
author = {Kohopaeae, Jyrki, Jonsson, Nils-Olov, and Lindbaeck, Jan-Erik}
abstractNote = {Nuclear Power Plants in Sweden and Finland were built during the period 1965-1985. Unlike conventional heat and power plants and most process industries, nuclear power plants are operated almost in its original form for a very long time. Therefore ageing of components, availability of spare parts and storage of spare parts, are very important questions for the nuclear industry. A number of technological shifts have occurred since the construction of the Swedish and Finnish nuclear power plants, in simplicity it can be described as a transition from analogue to digital equipment. This has made it even more difficult to find spare parts and replacements for original equipment. This project was initiated by Elforsk with the aim to improve the knowledge on electrical and I and C equipment in Swedish and Finnish nuclear power plants. The project has the following two main directions: - Understand the ageing processes - To indicate where the problems are or are expected The report consists of three parts; part 1 is a summary of the ageing management programs at the Swedish and Finnish nuclear power plants, components, spare parts, and retiring of competencies, part 2 consists of a review of international literature and Swedish and Finnish regulations. Part 3 present conclusions and suggestions of further research. All nuclear power plants in Sweden and Finland has developed either a process or a department to take care of the ageing problems at the plant. The ageing management is influenced by for example the IAEA's ageing management program, the Beznau model and their in house developed ageing management programs. The most important causes of the ageing problem can be summarized to the following four: - Temperature (high, low, or fluctuating) - Humidity - Vibrations - Radiation The table below show how a component inventory can be done in a ageing management program. [Table: Example layout of a component inventory]. As mentioned above management of the aging problems at nuclear power plants can be done in the form of a process or being dealt with in a specific company department. Loviisa Nuclear power plant has a separate department dealing with aging management while the three Swedish nuclear power plants have an aging management process. The aging management process should be clear and transparent to the power plant management and authorities in order to see that the aging problems are dealt with in a satisfactory way. Aging management should be long term and aging mechanisms must be discovered at an early stage so that measures can be taken before a component has degraded to a degree that is jeopardizing safety, operability and reliability}
place = {Sweden}
year = {2010}
month = {Dec}
}