ML20127B740
| ML20127B740 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 01/31/1975 |
| From: | Clarity M, Mayer L NORTHERN STATES POWER CO. |
| To: | Anthony Giambusso NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| LER-LER-750131, NUDOCS 9102130557 | |
| Download: ML20127B740 (2) | |
Text
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CONTROL BLOCK:l l
l l
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l pLgAgg PRWT ALL EgednE3 WPORGA?. TION) e 1
6 NAME LCENSE NUMBER E
TY P1 l ulN lM lN l P l 1l bl 0l-l0 l 0 l 0 l 0 l 0l-l 0l 0]
l4 l1 l1 l1 l1 l. l0l1l 7 89 14 15 25 26 30 31 32 "N S$N coCKET NUMBER EVENT DATE REPORT oATE CATEcoRv T
O 1 CON'T l P l Ol W
(_L_j l 0l 5l 0l-10 l2 l 6 l 3 ]
l0l112l3l7l Sj l 0 l 1l 3l1 l 7l 5l 7 8 57 58 59 60 01 68 69 74 75 80 EVENT DESCRIPTION BE l During refueling, da:anged CRD connector resulted in false indication for one control l 7 89 80 EE l rod.
Rod was verified fully inserted and rod position interlock for that rod l
80 7 89
@l vas bypassed. Refueling continued two hours.
Bypass violated limiting condition l
80 7 89 0
l for operation. No previous occurrence. Connector repaired, bypass removed.
l 80 7 89
@l (A0 263/75-04) l 80 7 89 pmg CODE COMPONENT CODE M
ACTUNA VOLATON E lRlBl lA l lIlNl SIT lRlUl lN l
[C]0l7lSl W
7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION DE l coerator Error.
Electrically disarmed the CRD and repaired the connector.
l 7 89 80 3E l Discussed occurrence with shift supervisors.
l 7 89 e0 1
I I
FACLITy METHOD OF STATUS
% POWER OTHER STATUS DISCOVERY DtSCOVERY DESCRIPTON h_l lolol ol I n
I LAj
! NA l
1 7 8 9
10 12 13 44 45 46 80 E ED OF ASE AMOUNT OF ACTIVITY LOCATON OF RELEASE LzJ 1.2J l
NA I
I NA l
i 7 8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRDTON M l 0 l 0l 0l
[Zj l
NA l
7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTON 3 l0l0l0l l
NA l
7 89 11 12 80 OFFSffE CONSEQUENCES hl NA l
7 89 80 LOSS OR OAMAGE TO FACIUTY TYPE DESCRIPTON D2 Lz.I l NA
-l 7 89 10 80 PUBLICITY DE I NA l
7 89 80 AOOmNAL MCTOR3 9102130557 750131 I E l NA PDR ADOCK 03000263' l
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< + w t-m 80 7 89 612-295-5151 NAME:
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.1P,i2i NORTHERN 5TATES POWER COMPANY r"
M I N N E A PO bl S, M I N N E SOTA 5 3401 Jtnuary 31, 1975
's Mr. A. Giambusso, Director r-(
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S] FEBS Division of Reactor Licensing U S Nuclear Regulatory Commission 1975
- o Wishington, DC 20555 g_-.
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mf Dae.r Mr. Giambusso:
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MONTICELLO NUCLEAR GENERATING PIANT N /h%6 Docket No. 50-263 License No. DPR-22 Licensee Event Report to the NRC Refueling Interlock Bypass The Licensee Event Report for this occurrence is reproduced on the back of this letter, Yours very truly,.
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L 0 Mayer, PE Manager of Nuclear Support Services LCN/MHV/yb cc:
J G Keppler G Charnoff
/
Minnesota Pollution Control Agency Attn: E A Pryzina 1378
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