ML20031F215

Forwards Outline & Assignment for Branch Input to Rept on Four Steam Generator Tube Rupture Incidents

ML20031F215
Person / Time
Site:	Surry, Prairie Island
Issue date:	10/15/1979
From:	Noonan V Office of Nuclear Reactor Regulation
To:	Shao L Office of Nuclear Reactor Regulation
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References
FOIA-81-313 NUDOCS 8110190365
Download: ML20031F215 (2)

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f_1. hili OCT 151979 NOTE Ti.

L. C. Shao, Acting Assistant Director I

for Engineering Programs

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Division of Operating Reactors FROM:

V. S. Noonan, Chief Engineering Branch Division of Operating Reactors

SUBJECT:

OUTLIt;E AND ASSIGN?ENTS FOR ENGINEERING BRANCH INPUT TO REPORT ON FOUR (4) STEAM GENERATOR TUBE RUPTURE INCIDENTS l

Attached for your inforr:ation is a proposed outline of the lection of the subject report that the En The staff or consultant (s)gineering Branch is responsible for preparation.

% signed for each Subsection is indicated in the parenthesitt next to each topic.

B. D. Liaw is responsible for over all e

coordination and editing.

It is understood that the coc:plettor: of our input will depend upon the findings at Prairie Island Unit 1 which may be a few weeks away. Nevertheless, we have started to write other Subsections on the assumption that the Prairic Islead incident is similar in nature to Doel II and Surry II' incidents.

Upon receipt of copies of'this note, each individual being assigned is requested to provide input to B. D. Liaw by October 16, 1979 i

original signed b78) s i

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1, Vincent S. Noonan, Chief l

Engineering Branch Division of Operating React:r s Encloture: As stated cc:

D. G. Eisenhut P. Check l

B. D. Lia l

l W. S. Hazelton f8110190365 810827 L. sranK iPDR FOIA J. Weeks (BNL 4UDELL81-313, PDR 0

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Section XX Steam Generator Tube Integrity - Mechanical & Material Aspects XX 1. Description of Tube Failure Mechanisms (Strosnider/ Murphy) r.-

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Wastage / Tube Wall Thinning XX.1.2.

Tube Denting XX.1.3. ' Stress Corrosion Cracking at U-bend XX.2. Point Beach Unit Incident XX.2.1.

S.G. Operating History (Frank)

XX.2.2.

Probable Cause (Frank / Weeks)

XX.2.3.

Remedial Action (Frank / Weeks)

XX.3. Surry Unit 2 Incident (Strosnider/ Murphy)

XX.3.1.

S. G. Operat.ing History XX.3.2.

Cause of the Tube Failure / Subsequent Degradation XX.3.3.

Remedial Actions XX.4. Doel Unit II Incident (Strosnider/ Murphy)

XX.4.1.

S.G. Operating History /Results of Pre-incident ISI XX.4.2.

Cause of the Tube Failure XX.4.3.

Remedial Action XX.S. Prairie Island Unit 1 Incident (Liaw/ Frank)

XX.5.1.

S.G. Operating History /Results of ISI (Frank)

XX.5.2.

Cause of the Tube Rupture XX.5.3.

Proposed Course of Rem.: dial Actions XX.6. Conclusions and Recommendations (Hazelton/Liaw/ Weeks)

XX.6.1.

Results of BNL Testing and Its Applicability XX.6.2.

Technical Bases 7

XX.6.3.

Recomended Plant Specific and Generic Remedial l

Actions l

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