ML17053B537

Requests Addl Info Re 790809 Proposal to Use Alternative Method of Splicing Reinforcing Steel Bars than Described in Facility Psar.Reply Must Be Notarized

ML17053B537
Person / Time
Site:	Nine Mile Point
Issue date:	03/25/1980
From:	Rubenstein L Office of Nuclear Reactor Regulation
To:	Rhode G NIAGARA MOHAWK POWER CORP.
References
NUDOCS 8004100297
Download: ML17053B537 (14)

Text

Docket No.:

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FHilliams LRubenstein DLynch MService RMattson Mr.'erald K. Rhode, Vice President SHanauer Niagara Mohawk Power Corporation JKnight 300 Erie, Boulevard West RTedesco

Syracuse, flew York 13202 RDeYoung

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Dear Mr. Rhode:

HKreger MErnst

SUBJECT:

REQUEST FOR ADDITIONAL INFOKQTION - SPLICING REINFORCING STEEL BARS'e have'eviewed your letter dated August 9, 1979, in which you propose to

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use another method of.splicing reinforcing steel bars which differs markedly from the spl,icing method described in Section 12.6.3 of the Nine Mile Point Unit 2 PSAR.

Specifically, you propose-to use the Dwidag Threadbar System as opposed to the cadwelded and welded splice methods described in yoUr original application.

Your basis for justifying the newly proposed splicing.

method is the approval granted in Code Case

1758, dated. December 12, 1976, of ASIDE Section III, Division 2.

Based on our review, we find ther e is insufficient information provided in your letter to approve this proposed change.

Specifically, the referenced code case indicates in Section 2 those I

requirements acceptable to.the ASME for material selection, qualification and performance testing of the splices".

We require that you submit this information for our review.

Additionally, we're aware of only one nuclear power plant on which this

'splicing method has been used and, then, only in a limited number of places sich as temporary openings and in those portions of the structure which had a stress level in the reinforcing steel bars lower than the maximum per-mitted by code.

Accordingly, we request that you provide additional infor-mation on the proposed use of %his splicing method, including: (1) reference to any other usage in nuclear power plants; (2) a discussion of the use of the proposed splices in highly stressed areas; and (3) a justification for OI now~

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MAR 25 1989 I

. not considering this proposed change to b'e an amendment to your construc-tion permit.

Finally, we note that your letter of August 9th was not

, notarized as required by our regulations.

Therefore, provide the required notarization when submitting the additional information requested.

If you have any questions regarding our request for additional information.

please contact us immediately.

Sincerely, 0>gg~al Signed by cc:

See Next Page L. S. Rubenstein, Acting Chief Light Water Reactors, Branch No. 4 Division of Project Management OrCICC~

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Docket No.:.50410 LRubenstefn OLynch MService.

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'Mr.'. Gerald, K. Rhode,, Vice Presfdent

'SHanauer Niagara Mohawk Power Co~oratfon JKnfght.

'00',Erie.Bou'1evard Mest."

RTedesco

'yracuse; New York 13202

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Dear Mr -Rhode:

HKreger MErnst SUNECT:: REQUEST'OR ADDITIONAL INFORMATION '- SPLICING REINHORCING STEEL BARS' Me have reviewed your letter'dated August. 9, 1979, fn whfch you propose to

.use another method of.splfcfng reinforcing steel bars which differs markedly

~ 'rom the.splf'cfng method described fn Section.12.6.3; of the Nfne Mfle-Point Unit 2 PSAR'.."'Specfffcally.you propose to use the Dwfdag Threadbar Systen

.as opposed.to the cadwelded and wel.ded spTfce methods described fn your oÃgfna1 application.

.Your basis for justifying, the newly proposed splicfng method'.fs the approval-granted in Code Case 1758; dated December 12,. 1976, oi" ASME Sectfon III,.Division 2.

Based on our review, we find there is

~ fnsufffcfent information provided,fn your letter to approve this proposed

, change.

Specfffca11y,. the referenced..code case"indicates fn Section 2'hose i

. requirements acceptable to,the ASNE for materfal selectfon, qualification

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and performance testfng. of the splices.

Me requfre that you submit this

, information for. our review.

'ddftfonally; we are aware of only one nuclear.

power plant on which this splicing method has been. used and, then,'only..fn a limited number, of places such as temporary. openfngs and fn those portions of the structure whfch had a stress level fn the reinforcing steel bars lower than the maximum per-mftted by code.

Accordingly, we request that you provfde additional infor-mation on the proposed use of this splicing.method, including: (1) reference to any other usage fn nuclear power plants; (2) a discussion of the use of the proposed spTices fn highly stressed areas; and (3) a justification for OPflCC+

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>V Mr. Gerald K. Rhode MAR 25 1

not considering this proposed change to be an amendment to your construc-tion pe@nit.

Finally, we note that your letter of August 9th was not

. notarized as required by our regulations.

Therefore, provide the required notarization when submitting the. additional information requested.

- Ifyou have any questions regarding our 'request for addittona1 information.

pTease contact us inmediately.

Sincerely,

~ ) "op~~ signal bye '

cc:

See Next Page L. S. Rubenstein, Acting Chief Light. Water Reactors, Branch No. 4 Division of Prospect Management

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 MAR ~5 l980 Docket No.:

50-410 Mr. Gerald K. Rhode, Vice President Niagara Mohawk Power Corporation

.300 Erie Boulevard West

Syracuse, l'lew York 13202

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - SPLICING REINFORCING.STEEL BARS We. have reviewed your letter dated August 9, 1979, in which you propose to use another method of splicing reinforcing steel bars which differs markedly from the splicing method described in Section 12.6.3 of the Nine Mile Point Unit 2 PSAR.

Specifically, you propose to use the Dwidag Threadbar System as opposed to the cadwelded and welded splice methods described in your original application.

Your basis for justifying the newly proposed splicing method is the approval granted in Code Case

1758, dated December 12,

1976, of ASME Section III, Division 2.

Based on our review, we find there is insufficient information provided in your letter to approve this proposed change.

Specifically, the referenced code case indicates in Section 2 those re'quirements acceptable to the ASME for material selection, qualification

-and performance testing of the splices.

We require that you submit this information for our review.

Additionally, we are aware of only one nuclear power plant on which this splicing method has been used and, then, only in a limited number of places such as.temporary openings and in those portions of the structure which had a stress level in the reinforcing steel bars lower than the maximum per-mitted by code.. Accordingly, we request that you provide additional infor-mation on the proposed use of this'splicing method, including: (1) reference to any other usage in nuclear power plants; (2) a discussion of the use of the proposed splices in highly stressed areas; and (3) a justification for

Nr. Gerald K. Rhode 2

.VAR 25 1S80 not considering this proposed change to be an amendment to your construc-tion permit.

F'inally, we note that your letter of August 9th wag not notarized as required by our regulations.

Therefore, provide the required notarization when submitting the additional information requested.

If you have any questions regarding our request for additional information, please contact us iamediately.

Sincerely, cc:

See Next Page L. S. Rubenstein, Acting Chief Light Water Reactors, Branch No.

4 Division of Project Hanagement

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0 Niagara mohawk Power Corporation ccs:

Arvi>> E. Uptnn, Esq.

Le8oeuf, Lam'i, Leiby A HacRae 1757 N Street, N.

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Washington,

0. C.

20036 Anthony Z. Rnisi>an, Esq.

Natural Resources Defense Council 917 15th Street, N.

W.

Washington, D. C.

20005 Nr. Richard Goldsmith Syracuse University College of Law

" E. I. White Hall Campus

Syracuse, New York 13210 T, K. De0oer, Director Technol ogical Devel opment Programs

~ New.York State Energy Office Swan Street Building Core 1 - 2nd Floor Empire State Plaza

Albany, New York 12223

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