ML19318C380
| ML19318C380 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 06/27/1980 |
| From: | Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-14, NUDOCS 8007010413 | |
| Download: ML19318C380 (3) | |
Text
.U!!S D3CUMENT C0!!TAINS P00R QUAUTV PAGES p
PCO VIRGINI A ELECTRIC AND POWER COMPANY. RfCNMONO. VIRGINI A 23261 June 27, 1980 Mr.
..w i 2 C'".cil.'y, sir 7ctu Serial '.o.
5521 Uffice of Insocctico ?x inforecatn*.
U.S. tk.r.iear i mulawry Coe. mission
% GC & C:.uac:wa.N scrivo II 00ckat Nos. 23-E3 lui vsrietti 5t ect, iuite 21~.50-33v Atlar t 2, G.'r;is XJ03 10:.M.
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_ve ; tenir..u cur ;ul;w c1 thC 1.d.
.wiiutin 7 /-i-r,r.or:- m ui Uni..
.2 :st;_.ita; ;,,.;; Aetle.n cua fur onir.1 is na nu,ust,1, im.
Inc atta;.m u TL;e 1 su;. car;zus ;ur tir.oi..,,8 ter u.ilt.:. m.:rovli; s in ;n sce of tne., nit ; stor.us.
o A surcary or :.r.c ncncearor:arces ;cantifi"c en Unit 2 foli;ws:
.'.antnnfonnees ienntifica
.]rior ta recelat af thi:
cwra;.ane license (r.oril 11, 13:0) e re ranart.Ic.. ;.sr tre Dravisiens of iMn' G.5%).
Gur final 5F 2) rev]rt W.N.
1..;;4 at :' crc 5 1, J 6) oroviaec a e xticta lic'.ar cf tais3 nancontornnc u.
Constructi]n wr,r <, is u_ ;olete on all of tr.s 1
.cr. cent a r.tanc i s 1/ntif irc af ter recelat ;t tno coeretinc 11cansa ere reporteo by Licensee Jivant neaort 60-G2/Gli; retarencs cor 14 cr.y letter (5.a.
' 6C-007 of v;. y*
D, 19E).
Ccnstruction cor< :n tre mocificatict's reLuired to ccr ect v.crrorfarn nces is al:0 cc.;.ciate.
17 Our IOtter....1 3rr af mveaner 9, ig79, we notifiac yo.; tr,c cur revien 3r at. lid.in N -iw m vinn.sr rJct.ec. ny a c ri.e erncerninu 2r01i fin resuonse s ectrLa (~is) curves snich ae recortec on havemoer 5,
197i ay 100.~El.1-(e), Srt 21, -inu Licen+ee Event depcrt U.9) f7r units 1 sm 2 inuleated
.e that we excatted to fiac systems eitn actn.>r:cles, a ciscr.enet Sultetbi 7F-14 v dv-: w l ;nt Ano tne 4 5 curve are-i n.
In ta? r/'irc :.:rNr.wn of xc '.etter, es si..taa tnat ae..oulo wor < actn crociees concurrentay,
- snc ths.t. fr.r cas-s involving,:t, r':1: s, Mii!;.eti.;rc arc. repartir.a to toe.6C would ae hancleo tnrouc,n ;c.2 tec cr;aica 1CCF.6._.5n :-) ano LIR; tnat ".
action ac.er 1.d. -ui te tin 79-14 will ne limitea to recorting sucn cases in the final tulletin texrt."
To satisfy this cor.ituent, oelow is a list of MS4's (1scutric aioiro orowin;. ) anicts requirea mooificaticos.
were.41 rectea cy botn proolems ana 03 S
6007 99)
/ 1 01 thit 1
'6X No.
Line Function ll715-lClG Main Steam - At:cs. Oino IClH Main Steam Delay Heat Release 107F Cuenen Spray cump Section Line 11SC Cn7. Cooling (CC) Sucaly to 4HR HX 11SV CC from acren 'secevary (9.R) Dist111cte M 113#
CC to Liquio Waste i BR Distillate HX 1:1h Wefueling durir. Wro Suction '_ines units 1 % 2 11715-105A Sarvice Water from CC HX 105C Service Water Purna 01senstge ll8G CC Return from Recire. Air Colls Unit 2 11715-11914 CC to CC Pump Suction We censicer this to be cur final report en lilletin 79-1A for North Anna Unit 2.
Our finsi report for Unit I will follow corcletion of cur review.
If you have any questions, please incuire.
,.m ve trulyyours, l
i, i v s
- C. crodi, Y.(Lh':,
ll(:
>//.
/
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Senior Vicd* resident - Power / Stdicn Engine = ring and Ccostruc o cc: Mr. Victor Stc11c, Director CFfice of Inmction & Enforcefrent VM Harold R. Denton, dir:ctor Office of Nuclear Reactor Peculation
TABLE 1*
SUMMARY
OF VALVE WEIGHT REVIEW Unit 1 Unit 1 Unit 2 S&W Scope.
Non-S&W Scope S&W Scope Total Number of Computer-Analyzed Seismic 143 21 143 MSK's Total Number of MSK's with Acceptable Review 120 17 131 Number of MSK's containing no valves 42 36 Number of MSK's acceptable per previous 7
2 I.E.Bulletin 79-04 review Number of MSK's with valve weights 9
44 within 10% of actual weight Number of MSK's acceptable after 62 17 49 engineering evaluation Total Number of MSK's Requiring Evaluation or 2
1 0
Vendor Verification of Valve Weights Number of MSK's requiring vendor valve 0
0 O
weight verification before review can start Number of MSK's identified which require 2-1 0
further evaluation Number of MSK's acceptable after noncon-21 3
12 formances were corrected or justification developed for continuous operation
- This table is a summary of the computer analyzed seismic MSK's.
"Non-S&W Scope" MSK's are those analyzed originally by Teledyne and Nuclear Services.
All Unit 2 MSK's were analyzed by S4W.
Note: An MSK is an isometric piping drawing.
C2752/8
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