ML20043E722
| ML20043E722 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 06/06/1990 |
| From: | Nichols S Maine Yankee |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| MN-90-55, SEN-90-165, NUDOCS 9006130319 | |
| Download: ML20043E722 (2) | |
Text
I MaineVankee HELLABLE ELECTRCTY f 04 MAINE SINCE 1972 EDISON DRIVE. AUGUSTA. MAINE 04330. (207) 622-4868 June 6,1990 MN-90-55 SEN-90-165 UNITED STATES NUCLEAR REGULATORY COMMISSION Attention:
Document Control Desk Washington, DC 20055
References:
(a)
License No. DPR-36 (Docket No. 50-309)
Subject:
Maine Yankee Cycle 12 Primary-to-Secondary Leakage Administrative Controls Gentlemen:
During a May 23,1990 meeting at NRC headquarters, the NRC staff requested Maine Yankee document our administrative controls governing primary-to-secondary leakage through steam generator tubes. The attached Cycle 12 administrative controls shall be implemented prior to reactor startup from our current refueling outage.
Maine Yankee is concerned about the operational and maintenance difficulties one would face with contaminated secondary plant systems. Therefore, we have structured our administrative controls to minimize the spread of contaminates to the secondary steam supply system.
Maine Yankee has also committed to rev$ sing Technical Specification 3.14,
" Primary System f.eakage," to establish a limiting condition for operation requiring-leakage from any one steam generator be limited to 0.15 gallons per minute.
This proposed change is undergoing management review and is scheduled to be submitted by June 22, 1990. Until such time as the proposed change is approved by the NRC staff, Maine Yankee has established procedural controls reflecting the more conservative specification.
Please contact us should you have any questions.
)
Very truly yours,
\\
t J
S. E. Nichols Licensing Section Head i
SEN:SJJ j
Attachment c:
Mr. Thomas T. Martin Mr. Eric J. Leeds Mr. Cornelius F. Holden
[h,( Q{\\
9006130319 900606 PDR ADOCK 05000309 1
P PDC Q
SEN90165.LTR
.- \\
i i
I CYCLE 12 ADMINISTRATIVE CONTROLS IN THE EVENT OF CONFIRMED INCREASED PRIMARY-TO-SECONDARY ACTIVITY IN SECONDARY SYSTEMS, THE FOLLOWING
^
- ACTIONS WILL BE TAKEN:
AT 15 GPD:
INCREASED MONITORING AND TRENDING GRAB SAMPLES ONCE PER DAY l
DAILY AIR EJECTOR RMS TRENDS INITIATE LEAK INVESTIGATION CONDUCT SPECIAL PORC MEETING AT 50 GPD:
CONTROLLED PLANT SHUTDOWN (WITHIN 6 HOURS) TO IDENTIFY AND REPAIR LEAK SOURCE AT 100 GPD:
RAPID PLANT SHUTDOWN (WITHIN 2 HOURS) TO IDENTIFY AND REPAIR LEAK SOURCE l
SEN90165.LTR
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