Optimum test interval of closing valves

Esko Lehtinen; Tuomas Mankamo; Urho Pulkkinen

doi:10.1016/0029-5493(84)90255-3

Optimum test interval of closing valves

Esko Lehtinen, Tuomas Mankamo, Urho Pulkkinen

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

1 Citation (Scopus)

Abstract

The closing valves are the main part of time in stand-by state. It is characteristic that the reliability of the valves decreases during stand-by time. Therefore the valves are tested periodically in order to check their condition. On the other hand, the testing may cause failures and thus decrease the availability of valves. Through a proper choice of test internal these competing factors can be balanced against each other. Optimum tests interval of closing valves is considered with the aid of simple unavailability models and using reliability data collected from Finnish BWR plants.

Original language	English
Pages (from-to)	99-104
Journal	Nuclear Engineering and Design
Volume	81
Issue number	1
DOIs	https://doi.org/10.1016/0029-5493(84)90255-3
Publication status	Published - 1984
MoE publication type	A1 Journal article-refereed

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title = "Optimum test interval of closing valves",

abstract = "The closing valves are the main part of time in stand-by state. It is characteristic that the reliability of the valves decreases during stand-by time. Therefore the valves are tested periodically in order to check their condition. On the other hand, the testing may cause failures and thus decrease the availability of valves. Through a proper choice of test internal these competing factors can be balanced against each other. Optimum tests interval of closing valves is considered with the aid of simple unavailability models and using reliability data collected from Finnish BWR plants.",

author = "Esko Lehtinen and Tuomas Mankamo and Urho Pulkkinen",

year = "1984",

doi = "10.1016/0029-5493(84)90255-3",

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AU - Lehtinen, Esko

AU - Mankamo, Tuomas

AU - Pulkkinen, Urho

PY - 1984

Y1 - 1984

N2 - The closing valves are the main part of time in stand-by state. It is characteristic that the reliability of the valves decreases during stand-by time. Therefore the valves are tested periodically in order to check their condition. On the other hand, the testing may cause failures and thus decrease the availability of valves. Through a proper choice of test internal these competing factors can be balanced against each other. Optimum tests interval of closing valves is considered with the aid of simple unavailability models and using reliability data collected from Finnish BWR plants.

AB - The closing valves are the main part of time in stand-by state. It is characteristic that the reliability of the valves decreases during stand-by time. Therefore the valves are tested periodically in order to check their condition. On the other hand, the testing may cause failures and thus decrease the availability of valves. Through a proper choice of test internal these competing factors can be balanced against each other. Optimum tests interval of closing valves is considered with the aid of simple unavailability models and using reliability data collected from Finnish BWR plants.

U2 - 10.1016/0029-5493(84)90255-3

DO - 10.1016/0029-5493(84)90255-3

M3 - Article

SN - 0029-5493

VL - 81

SP - 99

EP - 104

JO - Nuclear Engineering and Design

JF - Nuclear Engineering and Design

IS - 1

ER -

Optimum test interval of closing valves

Abstract

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