Water chemistry and materials degradation in LWR's

Kari Törrönen; Pertti Aaltonen; Hannu Hänninen

Water chemistry and materials degradation in LWR's

Kari Törrönen, Pertti Aaltonen, Hannu Hänninen

VTT Technical Research Centre of Finland

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Professional

Abstract

Water chemistry plays a major role in corrosion, in erosion corrosion and in activity transport in NPPs; it impacts upon the operational safety of LWRs in two main ways: integrity of pressure boundary materials and activity transport and out-of-core radiation fields. A good control of water chemistry can significantly reduce these problems and improve plant safety, but economic pressures are leading to more rigorous operating conditions: fuel burnups are to be increased, higher efficiencies are to be achieved by running at higher temperatures and plant lifetimes are to be extended. Typical water chemistry specifications used in PWR and BWR plants are presented and the chemistry optimization is discussed. The complex interplay of metallurgical, mechanical and environmental factors in environmental sensitive cracking is shown, with details on studies for carbon steels, stainless steels and nickel base alloys.

Original language	English
Title of host publication	Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials
Place of Publication	Paris
Publisher	OECD NEA Nuclear Energy Agency
Pages	21-36
Publication status	Published - 1995
MoE publication type	D3 Professional conference proceedings
Event	Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials - Kiev, Ukraine Duration: 19 Sept 1994 → 23 Sept 1994

Publication series

Series	OECD General Distribution Reports
Number	OCDE/GD(95)2

Series	NEA Committee on the Safety of Nuclear Installations. Report
Number	NEA-CSNI-R-94-26

Conference

Conference	Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials
Country/Territory	Ukraine
City	Kiev
Period	19/09/94 → 23/09/94

Access to Document

https://inis.iaea.org/collection/NCLCollectionStore/_Public/28/008/28008591.pdf?r=1&r=1

Cite this

Törrönen, Kari ; Aaltonen, Pertti ; Hänninen, Hannu. / Water chemistry and materials degradation in LWR's. Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials. Paris : OECD NEA Nuclear Energy Agency, 1995. pp. 21-36 (OECD General Distribution Reports; No. OCDE/GD(95)2). (NEA Committee on the Safety of Nuclear Installations. Report; No. NEA-CSNI-R-94-26).

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title = "Water chemistry and materials degradation in LWR's",

abstract = "Water chemistry plays a major role in corrosion, in erosion corrosion and in activity transport in NPPs; it impacts upon the operational safety of LWRs in two main ways: integrity of pressure boundary materials and activity transport and out-of-core radiation fields. A good control of water chemistry can significantly reduce these problems and improve plant safety, but economic pressures are leading to more rigorous operating conditions: fuel burnups are to be increased, higher efficiencies are to be achieved by running at higher temperatures and plant lifetimes are to be extended. Typical water chemistry specifications used in PWR and BWR plants are presented and the chemistry optimization is discussed. The complex interplay of metallurgical, mechanical and environmental factors in environmental sensitive cracking is shown, with details on studies for carbon steels, stainless steels and nickel base alloys.",

author = "Kari T{\"o}rr{\"o}nen and Pertti Aaltonen and Hannu H{\"a}nninen",

note = "Ydinvoimalaitosten rakenteellinen turvallisuus Project code: VAL370431; Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials ; Conference date: 19-09-1994 Through 23-09-1994",

year = "1995",

language = "English",

series = "OECD General Distribution Reports",

publisher = "OECD NEA Nuclear Energy Agency",

number = "OCDE/GD(95)2",

pages = "21--36",

booktitle = "Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials",

address = "France",

}

Törrönen, K, Aaltonen, P & Hänninen, H 1995, Water chemistry and materials degradation in LWR's. in Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials. OECD NEA Nuclear Energy Agency, Paris, OECD General Distribution Reports, no. OCDE/GD(95)2, NEA Committee on the Safety of Nuclear Installations. Report, no. NEA-CSNI-R-94-26, pp. 21-36, Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials, Kiev, Ukraine, 19/09/94. <https://inis.iaea.org/collection/NCLCollectionStore/_Public/28/008/28008591.pdf?r=1&r=1>

Water chemistry and materials degradation in LWR's. / Törrönen, Kari; Aaltonen, Pertti; Hänninen, Hannu.
Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials. Paris: OECD NEA Nuclear Energy Agency, 1995. p. 21-36 (OECD General Distribution Reports; No. OCDE/GD(95)2). (NEA Committee on the Safety of Nuclear Installations. Report; No. NEA-CSNI-R-94-26).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Professional

TY - GEN

T1 - Water chemistry and materials degradation in LWR's

AU - Törrönen, Kari

AU - Aaltonen, Pertti

AU - Hänninen, Hannu

N1 - Ydinvoimalaitosten rakenteellinen turvallisuus Project code: VAL370431

PY - 1995

Y1 - 1995

N2 - Water chemistry plays a major role in corrosion, in erosion corrosion and in activity transport in NPPs; it impacts upon the operational safety of LWRs in two main ways: integrity of pressure boundary materials and activity transport and out-of-core radiation fields. A good control of water chemistry can significantly reduce these problems and improve plant safety, but economic pressures are leading to more rigorous operating conditions: fuel burnups are to be increased, higher efficiencies are to be achieved by running at higher temperatures and plant lifetimes are to be extended. Typical water chemistry specifications used in PWR and BWR plants are presented and the chemistry optimization is discussed. The complex interplay of metallurgical, mechanical and environmental factors in environmental sensitive cracking is shown, with details on studies for carbon steels, stainless steels and nickel base alloys.

AB - Water chemistry plays a major role in corrosion, in erosion corrosion and in activity transport in NPPs; it impacts upon the operational safety of LWRs in two main ways: integrity of pressure boundary materials and activity transport and out-of-core radiation fields. A good control of water chemistry can significantly reduce these problems and improve plant safety, but economic pressures are leading to more rigorous operating conditions: fuel burnups are to be increased, higher efficiencies are to be achieved by running at higher temperatures and plant lifetimes are to be extended. Typical water chemistry specifications used in PWR and BWR plants are presented and the chemistry optimization is discussed. The complex interplay of metallurgical, mechanical and environmental factors in environmental sensitive cracking is shown, with details on studies for carbon steels, stainless steels and nickel base alloys.

M3 - Conference article in proceedings

T3 - OECD General Distribution Reports

SP - 21

EP - 36

BT - Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials

PB - OECD NEA Nuclear Energy Agency

CY - Paris

T2 - Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials

Y2 - 19 September 1994 through 23 September 1994

ER -

Törrönen K, Aaltonen P, Hänninen H. Water chemistry and materials degradation in LWR's. In Specialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials. Paris: OECD NEA Nuclear Energy Agency. 1995. p. 21-36. (OECD General Distribution Reports; No. OCDE/GD(95)2). (NEA Committee on the Safety of Nuclear Installations. Report; No. NEA-CSNI-R-94-26).

Water chemistry and materials degradation in LWR's

Abstract

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