ML20127G471
| ML20127G471 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 03/31/1973 |
| From: | Larson C NORTHERN STATES POWER CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 9211160613 | |
| Download: ML20127G471 (2) | |
Text
(
NORTHF
'N OTATCO P O W 8: R
O M P A N Y h
tbnticello,111nnesota 55362 i
L
)/
thrch 31, 1973 L
i l-1 Mr. Boyce 11. Crict, Director Directorate of Peculatory Operations Pagion III thited States Atmic Energy Ommission 799 Roosevcit Poad Glen Ellyn, Illinois 61037 Ibar tie. Orier:
1 IWf!CELID WCIERt GE27N&D;G PIAh7 lbeht !b. 50-263 Licence Ib DPR-22 During the invantigation into the inoperabiiity of tb llo.12 Standby Cas 1hrch 30 and w o due to the Trenenent Syste:n (which occurred on Frity,7eaker following preventiva igroper racking in of the exhaust fan notor naintenance) it ms discovered that the line fusos for tha exhaust fcn totors in cach of the two SGIS trains wrc of a lower rating than specified.
The fuces wre replaced with properly rated fuses.
Althouah the SCIS trains have operated properly with the 1cuer rated fusca installed, it can be postulated that the installation of the fuses could have provented the systm frca operating properly, i
Yours wry ttvly,
& uMy\\
t C E larcons Plant Ihnager j
!UfdllEPR STA'IES 1%TA CQC%NY t
CEIJrma cci File i
I Original m'4W to Itc. Grier cm F. arch 31, 1973.
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f ott r,7 UNITED STATES f
. ?;Qi ATOMIC ENERGY COMMISSION
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i OlVISION OF COMPLI ANCC
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HLGION lil 4M p 799 8400SEVELT ftOAD g
GLEN CLLYN, lLLINots 60137 (str>ess.ase.o i
A.
RO Inspection Report No.
Transmittal Date Distribution:
Distribution:
R0 Chief FS&EB R0 Chie f. FS&EB l
RO:llQ (5)
RO:llQ (4)
DR Central Files L:D/D for Fuel & Materials Regulatory Standards (3)
DR Central Files Licensing (13)
B.
RO Inquiry Report No.
Transmittal Date Distribution:
Distribution:
R0 Chicf, FSI.B R0 Chlef, FS&EB RO:llQ (5)
RO: liq DR Central Files DR Central Files Regulatory Standards (3)
Licensing (13)
C.
Incident Notification From: Northern States Power Co.
50-263 (Licensee & Docket No. (or License No.)
Transmittal Date
- May 29, 1973 Distribution:
Distribution:
R0 Chief, FS&EB R0 Chief, FS&EB RO:HQ (4)
RO:HQ (4)
Licensing (4)
L:D/D for Fuel & Materials DR Centrol Fib DR Central Files
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