ML20062G101
| ML20062G101 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 12/11/1978 |
| From: | Novarro J LONG ISLAND LIGHTING CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7812260215 | |
| Download: ML20062G101 (4) | |
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i December 11, 1978 SIiRC-342-1 k
Mr. Boyce Grier, Director i
Office of Inspection S Enforcement d.
Region 1 U.S. Nuclear Regulatory Cor-nission 631 Park Avenue King of Prussia, PA 19406 l
LONG ISLAHD LIGHTIliG CCFPAliY Shoreham Nuclear Potier Station - Unit 1 2
Dochet No.30-322 t
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.p9ar Mr. Grier:
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On November 8,1978, in accordance with 10CFR50.55(e) we reported verbally to Region 1 a deficiency trith the installation of socket veld fittings on Category I schedule 100 small bore pine.
This letter serves as our 30-day written report of this deficiency.
DESCRIPTIOM OF TIE DEFICIZ' ICY The deficiency associated with the installation of socket weld i
fittings on schedulo 160 small bore pipe is that the fillet ucids joining t'io sachet ucld fittings to the pine have undersiced fillet le; length (refer to Attachment I).
"he fillet leg length is re-quired to be 1.09 tines the ncminal pipe vall thichness as per Finura ::B-4427-1 in the summer of 1977 addenda of ASUE Section III
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(refer to Attachment II).
The subject fillet ucids on schedule T.te fillet velds on small bore pipe other than schedule 150 are-1GO acall bore pipe do not ccc: this requirement in nany cases.
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lj, adequate cs installed since there is a staller required fillet leg length due to the thinner pipe vall of louer schedule pipe.
COR2ECTIVE ACTION i
All fillet welds'for socket veld fitting attachments to schedule 160 small bore pipe vill be insoected for croper fillet lag loncth.
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Socket veld fittings with insufficient fillet icg length tdll have i
additional veld caterial added to increase the fillet leg length l
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to meet the code requirement.
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Dece:::ber 11, 1978 Mr. Eoyce Grier
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i CORRECTIVE ACTION TO PREEiT RECUR?INCE q
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Inspectors will be cade cognizant of the requirement delineated i
above and all future inspections of socket wold fittings will include this requirement.
Training classes have been held wherein inspection personnel were instructed in the tinicum fillet leg length for various size and schedule pipe.
A comarchensive doctanent was distributed to all inspection personnel delineating a
the required n4 4m fillet log length for all size and schedule small bore pipe.
4 DATE OF FULL COMPLIA' ICE (3
Ue esticate that all fillet welds for socket weld fittings on schedule 160 small bore pipe vill be in full corp 11ance with the above code requirement by December 1,1979.
Very truly yours, 1
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J. P..iovarro Project iha: cr Shorcham iluclear Power Station
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Mr. John G. Davis, Director Office of Inspection & Enforcement bec:
Dist. Lis t 14 c!
M. J. Hullarkey D. Papa A. B. C:.arnomski l
C. L. Albertini j
Eng. File /SR2...A21.200 i
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SOCKET WELD FITTING I
3 FILLET WELD PIPE WALL
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l PILLET LEG LEllGTil I
t FILLET LEG LENGTII 3-i' PIPE FITFING [
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' t.n a nominal pipe wall thickness I
FILLET LEG LENGTil } 1.09 x kn
I t.',.,y-ATTACH MEWI E
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l, N8 4435-NB4452 SECTION lit, DIV1510N I - SUBSECTION NB i
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4 M.n.cnum Weid.ng Demons.ons for Socket. Weld.ng Fitt.ngs I
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FIG. NB-4427-1 FILLET WELD O!MENSIONS (CONT'D) t
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(c) The matenalis compatible with the material to NB-4420 EXA511NAllON OF WELDS which it is attached.
(d) he welding matenalis certitied in accordance AH weMs shall be examined in accordance with the with the requireriients of NB-2130. NB 2430. and
9 "'* *" I" N B-4120.
The w lds are postweld heat treated when (c) e required by N B-4622.1.
3 REPMR OF WELD 51ETAL DEFECTS t
NB-4851 Installation of Attachmeurs to Pipin General Requirements NB4436
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Systems After Testing Unacceptable defects in weld metal detected by j
Permanent attachments meetmg the requirements methods required by NB-50iM. or by the testwf NB.
j of NB-L*33 and temporary or minor permanent 6(m. shall be ehmina' red or theindication reduced to
.j attachments meeting the requirements of NB-4435 an acceptable inmit and repaired when necessary.
t may be welded to the pipine system after perfor.
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mance of the pressure test prouded that:
NH4452 EHmination of Surface Defcers I
(as the welds do not require PWHT under NB-(
4622.7:
Weld metal surface defects may be removed by 4
I (6) the cross-sectional area of the matenal at.
gnnding or machining and not repaired by welding.
tached shall not esceed 6 sq in. (3870 mm9 at the prouded that the requirements of fa). (b). and (c) i{
l surface of the pressure boundary material:
below are met.
lj (c) welds shall be restncted to ti!!ct welds not tar The remainmg thickness of the section is not exceeding % in. (10 mm) throat thickness and to full reduced below that required by NB-3000.
1 (b) De depression. after defect climmation. is penetration welds attachmg materials not exceeding blended umformly mto the surrounding surface.
i H in. (13 mm) in thickness:
f (d) welds shall be exammed as required by NB.
Tne area is examined after blending by a (c) magnetic particle or liquid penetrant method. meet-5000.
ing the requirements of NB-5000, to ensure that the
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