ML20076L330

Second Round of Interrogatories Re Pressurized Thermal Shock.Related Correspondence

ML20076L330
Person / Time
Site:	Limerick
Issue date:	07/15/1983
From:	Lewis M LEWIS, M.
To:	NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD), PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8307190127
Download: ML20076L330 (2)

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UNITED STATES OF AMERICA NUCLEAR REGUIATORY COMMISSION W M D Corr p m p cg In-the' matter of ) 8 \

hila Electric Company

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Dockets Nos. 50-352 and t53./)

(Li,erick Generating Station .

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Units 1 and 2) ) p.

Yh & G CECOND ROUND OF INTERROGATORIES IN THE LIMERICK OPERATING LICENSING HEARINGS. M' In compliance with the Memorandum and Order Confirming Echedules Established During Pre hearing Conference ( May 16,1933.), Intervenor lewis submits his second rour. of

_;. int. err.ogatories. to the Applicant and the Staf.f. .Again please use the " definitions and

.. instructions " set up by the Applicant (in his) First Set of Interrogatories and Request

~4f # 2roduction of Documents to Delaware"(July 21,1932,)on Pages 1 thru 4 inclusive.

'I am. submitting the same set of interrogatories to the applicant Ahd the staff. Please

'jstate if the staff discussed the answere to t hese intarogatories with the applicant and

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1. When was Pressurized Thermal Sh ock first raised as an issue in any NRC commercial e nuclear power plant hearing? Which hearing? Page nos of Transcript ?

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27 Present a history er explanation of the develpment of pressurized thermal shock (PTS)

- Eas a problem and show how PTS has been investigated and raised to its present level of concern. -

3. A. For the NRC Staff: Include dates when pertinent NRC memo's and NUREG's' were issued , presentments before the ACRS , boards and professional societies and agency conferences on the subject of FIS.

3. For the applicant: Include dates and reasoning when the applicant (thru design

-r change requests,- company correspondence, other paperwork) changed or investigated

- procedures, materials , or testing due to any PTS related concern.(For instance:

welding procedures, metallurgical alloys, ulteasonic testing.) Present latest company material and . welding procedures , dates on which these procedures were last updated

. and document specifications; such as ASTM , ASME, or. HRC which wtMthe basis of change. ~

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n, . -u-dbThe.responseto. Interrogatory;.3shall(be.llimitedtoproceduresanddocumentatinn^

z i 2. E R pertaining to PTS and PTS; assoc ed concerns onlyr '

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W NR'C : The resume or credentials -of Demetrios ,Basdekas are requested. .

5. NRC :The staff' is requested to present Demetrios Basdeh: as a witness. Please 4xplain what'ste p would be necessary to get Demetrios Basdekas as a witness.

In the following questions , exposure to neutron flux is referred to as " neutron bombardment-in the following questions.

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6. Applicant and NRC documentation admits.- thatneutron bombardment affects the

" brittleness" of metals. This. increase-in brittleness and decrease in toughness tis ^ measure 'by a char.ge :in thel yalue~of a Charpy V-notch test.

in-brittleness the only change.. observed directly attributable to neutron Is'this= increase t.fO 1 C bombardment? . *i -W h ~ -

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7 Have other ch anges in any properties been attributed , observed or thekized to change 7

-due to neutron bombardment? '

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3, Do metals , which have been embrittled by neutron bombardment, show any changed behaviour when previously , subsequently, or concurrently exposed to environments which cause chloride sensitization, ordering reaction, or any other deleterious effect?

vs' metals not embrittled by neutron bombardment?

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9. Have these sets of permutations and environmental testing been explored experimentally or in actual reactors? Give dates and extent of evaluation.

,10. Is there any theoretical or physical reason that neutron es.brittlement should o r should not affect properties other than toughness?

I am sending this out to the entire mailing list for the Docket 50-353 and 353, and 11'do.so certify. .

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