Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA

Risto Himanen; Jari Pesonen; Pekka Pyy; Mikko Tupala; Jan-Erik Holmberg

Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA

Risto Himanen
, Jari Pesonen
, Pekka Pyy
, Mikko Tupala
, Jan-Erik Holmberg

VTT Technical Research Centre of Finland

Teollisuuden Voima Oyj

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

Abstract

Teollisuuden Voima Oy (TVO) owns and operates in Southern Finland two BWR units (OL1 and OL2) and has one PWR unit (OL3) under construction. The Finnish Regulatory Body STUK requires that the design of new nuclear power plants as well as the operation of the operating nuclear power plants shall be supported by PSA. Recently, a project has been carried out for the operating units OL1 and OL2, in order to systematically evaluate the TechSpecs with PSA. This study encompasses allowed outage times (AOTs) for power operation, surveillance testing and, also, outages. The paper discusses the insights and results of the analyses. Examples of such insights are that there is no single predominant methodology for this kind of evaluation, and therefore AOT calculations may to be studied from different aspects. Quantitative analysis shall be supplemented with comprehensive qualitative assessment with experts from plant organization prior to final decision and proposal for changes in the TechSpecs. A new area for application of the method are the TechSpecs for shutdown states during the refueling outage, for which the work is still ongoing.

Original language	English
Title of host publication	PSA 2008, Challenges to PSA during the nuclear renaissance
Subtitle of host publication	International Topical Meeting on Probabilistic Safety Assessment & Analysis
Place of Publication	Knoxville
Publisher	American Nuclear Society (ANS)
Pages	1606-1615
ISBN (Print)	978-0-89448-065-2
Publication status	Published - 2008
MoE publication type	A4 Article in a conference publication
Event	PSA 2008, Challenges to PSA during the nuclear renaissance. International Topical Meeting on Probabilistic Safety Assessment & Analysis - Knoxville, United States Duration: 7 Sept 2008 → 11 Sept 2008

Conference

Conference	PSA 2008, Challenges to PSA during the nuclear renaissance. International Topical Meeting on Probabilistic Safety Assessment & Analysis
Country/Territory	United States
City	Knoxville
Period	7/09/08 → 11/09/08

Keywords

technical specifications
PRA
PSA
risk-informed
nuclear power plant

Cite this

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title = "Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA",

abstract = "Teollisuuden Voima Oy (TVO) owns and operates in Southern Finland two BWR units (OL1 and OL2) and has one PWR unit (OL3) under construction. The Finnish Regulatory Body STUK requires that the design of new nuclear power plants as well as the operation of the operating nuclear power plants shall be supported by PSA. Recently, a project has been carried out for the operating units OL1 and OL2, in order to systematically evaluate the TechSpecs with PSA. This study encompasses allowed outage times (AOTs) for power operation, surveillance testing and, also, outages. The paper discusses the insights and results of the analyses. Examples of such insights are that there is no single predominant methodology for this kind of evaluation, and therefore AOT calculations may to be studied from different aspects. Quantitative analysis shall be supplemented with comprehensive qualitative assessment with experts from plant organization prior to final decision and proposal for changes in the TechSpecs. A new area for application of the method are the TechSpecs for shutdown states during the refueling outage, for which the work is still ongoing.",

keywords = "technical specifications, PRA, PSA, risk-informed, nuclear power plant",

author = "Risto Himanen and Jari Pesonen and Pekka Pyy and Mikko Tupala and Jan-Erik Holmberg",

year = "2008",

language = "English",

isbn = "978-0-89448-065-2",

pages = "1606--1615",

booktitle = "PSA 2008, Challenges to PSA during the nuclear renaissance",

publisher = "American Nuclear Society (ANS)",

address = "United States",

note = "PSA 2008, Challenges to PSA during the nuclear renaissance. International Topical Meeting on Probabilistic Safety Assessment \& Analysis ; Conference date: 07-09-2008 Through 11-09-2008",

}

Himanen, R, Pesonen, J, Pyy, P, Tupala, M & Holmberg, J-E 2008, Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA. in PSA 2008, Challenges to PSA during the nuclear renaissance: International Topical Meeting on Probabilistic Safety Assessment & Analysis. American Nuclear Society (ANS), Knoxville, pp. 1606-1615, PSA 2008, Challenges to PSA during the nuclear renaissance. International Topical Meeting on Probabilistic Safety Assessment & Analysis, Knoxville, Tennessee, United States, 7/09/08.

Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA. / Himanen, Risto; Pesonen, Jari; Pyy, Pekka et al.
PSA 2008, Challenges to PSA during the nuclear renaissance: International Topical Meeting on Probabilistic Safety Assessment & Analysis. Knoxville: American Nuclear Society (ANS), 2008. p. 1606-1615.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA

AU - Himanen, Risto

AU - Pesonen, Jari

AU - Pyy, Pekka

AU - Tupala, Mikko

AU - Holmberg, Jan-Erik

PY - 2008

Y1 - 2008

N2 - Teollisuuden Voima Oy (TVO) owns and operates in Southern Finland two BWR units (OL1 and OL2) and has one PWR unit (OL3) under construction. The Finnish Regulatory Body STUK requires that the design of new nuclear power plants as well as the operation of the operating nuclear power plants shall be supported by PSA. Recently, a project has been carried out for the operating units OL1 and OL2, in order to systematically evaluate the TechSpecs with PSA. This study encompasses allowed outage times (AOTs) for power operation, surveillance testing and, also, outages. The paper discusses the insights and results of the analyses. Examples of such insights are that there is no single predominant methodology for this kind of evaluation, and therefore AOT calculations may to be studied from different aspects. Quantitative analysis shall be supplemented with comprehensive qualitative assessment with experts from plant organization prior to final decision and proposal for changes in the TechSpecs. A new area for application of the method are the TechSpecs for shutdown states during the refueling outage, for which the work is still ongoing.

AB - Teollisuuden Voima Oy (TVO) owns and operates in Southern Finland two BWR units (OL1 and OL2) and has one PWR unit (OL3) under construction. The Finnish Regulatory Body STUK requires that the design of new nuclear power plants as well as the operation of the operating nuclear power plants shall be supported by PSA. Recently, a project has been carried out for the operating units OL1 and OL2, in order to systematically evaluate the TechSpecs with PSA. This study encompasses allowed outage times (AOTs) for power operation, surveillance testing and, also, outages. The paper discusses the insights and results of the analyses. Examples of such insights are that there is no single predominant methodology for this kind of evaluation, and therefore AOT calculations may to be studied from different aspects. Quantitative analysis shall be supplemented with comprehensive qualitative assessment with experts from plant organization prior to final decision and proposal for changes in the TechSpecs. A new area for application of the method are the TechSpecs for shutdown states during the refueling outage, for which the work is still ongoing.

KW - technical specifications

KW - PRA

KW - PSA

KW - risk-informed

KW - nuclear power plant

M3 - Conference article in proceedings

SN - 978-0-89448-065-2

SP - 1606

EP - 1615

BT - PSA 2008, Challenges to PSA during the nuclear renaissance

PB - American Nuclear Society (ANS)

CY - Knoxville

T2 - PSA 2008, Challenges to PSA during the nuclear renaissance. International Topical Meeting on Probabilistic Safety Assessment & Analysis

Y2 - 7 September 2008 through 11 September 2008

ER -

Evaluation of Olkiluoto BWR TechSpecs by using plant specific PSA

Abstract

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Keywords

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