ML18017A791

Requests Assistance in Resolution of Applicable Codes for Containment Penetration Grout Hole Closure Detail.Related Details & Drawing Encl

ML18017A791
Person / Time
Site:	Harris
Issue date:	01/28/1980
From:	Mcduffie M CAROLINA POWER & LIGHT CO.
To:	Parr O Office of Nuclear Reactor Regulation
References
NUDOCS 8002040517
Download: ML18017A791 (10)

Text

REGULATORY I NATION DIS ACCESSION NBHo8002040517 DOCSDATE: 80/0 I=ACID:'50-400 Sheeron Harris Nuc'lear Power 50-401 Shearon Harris Nuclear Power 50 402 Shearon Harris tIuclear Power AUTH BYNAME AUTAOR AFFILIAT'ION MCOOF'FXKEH ~ AD Cerofina Power R'ight C

AECIP,'"NAME hECkf'IENT AF'FILIATION PAAHiOND~

"Li'ght 'Itrater 'React'or s THIBUTION SYST (HIOS) 1/28 NOTARIZED 0 NO P'lantr Unit'1~ Carolina Plenty Onit 2i Carol'ina P I ent r Un'i t 3r caro'l 'ina 0 ~

Branch DOCKET ¹ 05000400 05000401 05000402 aSieeVo3 SUSIE.CT:

Requests assistance in resolution of applicable codes for containment penetratiop grout hole closui e detail.Related detai'Is L drawing encl, DISTRIBUTION CODE:

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CSQ0 Carolina Power & Light Company January 28,'980 Mr. Olan D. Parr, Chief Light Water Reactors Branch No.

3 Division of Project Management United States Nuclear Regulatory Commission Washington, D. C.

20555 SHEARON HARRIS NUCLEAR POWER PL'ANT UNIT NOS. 1, 2, 3 AND 4 DOCKET NOS. 50-400, 50-401$

50-402, AND 50-403 CONTAINMENT PENETRATION GROUT HOLE CLOSURE DETAIL

Dear Mr. Parr:

During a constructability review of the Unit No. 1 containment exterior wall, members of my,staff concluded that special precautions would be necessary to ensure proper consolidation of concrete under the larger containment penetrations with dense supplementary reinforcing steel around them. It was concluded that it would be prudent to have holes in the bottom of each of these penetrations to facilitate inser-tion of vibrators.

Chicago Bridge

& Iron Company Drawing 27, Revision 1

is attached as Enclosure (1) and shows the relat:ed details for penetra-tions S-57, S-58, S-150, S-151, and S-152.

As can be seen, the closure weld detail requires ultrasonic and magnetic particle exaadnation.

Our engineers do not feel this situation is clearly addressed by applicable codes and are therefore requesting technical concurrence with our interpretation and planned course of action.

Enclosure (2) summarizes the technical references and considerations.

Our basic concern is that at least one (1) interpretation may be that radiographic examina-tion is required.

This would require that a gap be provided under each penetration. for a film pack and the constructability of this approach severely diminishes the original objective.

Our project commitments and exceptions relative to the contain-ment liner are detailed in Appendix 5H of the preliminary safety analysis report.

Since the certificate of authorization, code stamping, and inspection by authorized inspectors is not required, we are requesting technical concurrence from you rather than the ASME committee.

The authorized inspector does not participate in the containment since it is not code stamped.

Qooi 58'i) 411 Fayetteville Street o P. O. Box 1551 o Raleigh, N. C. 27602 8'0090~6'-

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Mr. Olan D. Parr January 28, 1980 Our construction schedule requires a resolution on our course of action by February 1, 1980.

We would appreciate a conference call to discuss this matter at your earliest convenience.

Yours'very truly, M. A. McDuffie Senior Vice President Engineering and Construction MAM/jc Enclosures cc:

Mr. James P. O'Reilly

Enclosure 1

Page 1 of 2 SHEARON HARRIS NUCLEAR POWER PLANT I

CONCRETE GROUT HOLES IN PENETRATIONS Ebasco Speci fica tion:

CAR-SH-'AS-1

Title:

Containment Liner, Air Lock, Hatch Applicable Code:

None required for "concrete containment system at time of design and fabrication; however, A/E designed pene-trations to meet code requirement-for "metal containment" ASME Section III, Divsion I, Subsection NE, "MC Components" Field work to ASME Section III, Division I, 74 edition, W76 Problem Area; 3 small 4" diameter holes, in a row in bottom of penetrations to facilitate concrete pour to ensure sound area under each penetration.

Equipment:

With Holes Equipment Hatch Personnel Lock Escape Lock H&V Sleeve 24'iameter 9'" diameter 5",, diameter 4'. diameter Code:

No weld type joint specifically shown on vessel illustration, Fig.

NE 3351-1 for Category A,B,C,D, weld joints which are similiar to closure plate for the holes.

The penetration components were redesigned to add thicker;.

plate in hole areas for reinforcement such as openings.

A hole 4" diameter cut through and counterbored to provide a lip to act as a backing for closure weld after concrete has been poured.

Design:

For compliance with NDE requirements for Category A or B type weld joints by inspecting with U~ in lieu of RT for inaccessible welds per Para NE 5211.1 Problem:

Para.

NE 5211.2 on hydro inspection of Category A and B

welds <states? that examination of embedded or inaccessible welds of containment vessels may be waivered if they are double butt welded and fully radiographed prior to covering and are leak tightness tested with a gas medium test such as a

halide leak detector test.

Resolution:

(a)

Full penetration butt weld; area reinforced like an opening per code requirements.

(b)

UZ inspection per code in lieu of RT.

(c)

Perform gas leak test by leak chase channel.

Justification:

(1)

Not a code stamped penetration;

however, the commitment is to NRC to design and build to code.

Design is conservative.

(2)

UT in lieu of RT per NE 5211.1.

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Page 2 of 2 (3)

(4)

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Magnetic particle inspection Leak test by leak chase channel.

The remainder of the containment liner, ASME Section III, Div.

2 is inspected by magnetic particle or liquid penetrant inspection and leak chase test with RT done as a spot examination in areas not backed by concrete only.

The holes are backed by concrete.

ADDITIONALDATA TO SUPPLEMENT DRAWING PENETRATION THICKNESS OF PENETRATION WALL THICKNESS OF THICKENED SECTION THICKNESS OF PLUG MATERIAL TYPE FOR THICKNED SECTION

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