AEP-NRC-2013-43, Follow Up Notification of Appliance Repair
| ML13141A274 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 05/01/2013 |
| From: | Scarpello M Indiana Michigan Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| AEP-NRC-2013-43 | |
| Download: ML13141A274 (5) | |
Text
z INDIANA MICHIGAN POWER8 A unit of American Electric Power Indiana Michigan Power Cook Nuclear Plant One Cook Place Bridgman, MI 49106 Indiana Mic higanPowercom May 1, 2013 AEP-NRC-2013-43 10 CFR 50.4 Docket Nos.: 50-315 50-316 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 FOLLOW UP NOTIFICATION OF APPLIANCE REPAIR
References:
- 1. Letter from M. K. Scarpello, Indiana Michigan Power Company, to U.S. Nuclear Regulatory Commission Document Control Desk, "Notification of Appliance Repair,"
AEP-NRC-2013-12, dated February 11, 2013.
- 2. Letter from J. H. Harner, Indiana Michigan Power Company, to U.S. Environmental Protection Agency, dated April 19, 2013.
In Reference 1, Indiana Michigan Power Company (I&M), the licensee for Donald C. Cook Nuclear Plant (CNP) Units 1 and 2, submitted a repair notification to the Nuclear Regulatory Commission.
In Reference 2, I&M submitted a follow up notification of successfully performed repairs of the chiller, to the United States Environmental Protection Agency.
As described in Reference 1, due to an error in the scheduling process, a chiller equipment repair discovered on July 9, 2012, was extended beyond the required 30 day repair limit. It was discovered on January 15, 2013, that the repairs had not been made. A refrigerant leak located at the liquid line solenoid valve and three unloader solenoid valves occurred at the leak rate of 109 pounds per year, the maximum allowable leak rate for this chiller is 35 pounds per year. As a corrective measure, this chiller was removed from service and evacuated on January 18, 2013, with an estimated repair and return to service date of February 25, 2013. In addition, a retrofit/retirement of the entire system was to be completed by October 2013.
In Reference 2, I&M provided notification that CNP has successfully performed repairs-of the chiller.
Initial verification test and repairs to the liquid line solenoid valve and three of the unloader solenoid valves were performed during the week of March 15, 2013. Follow up verification testing was completed on March 28, 2013.
U.S. Nuclear Regulatory Commission Page 2 AEP-NRC-2013-43 A copy of Reference 2 is enclosed in accordance with CNP's Environmental Technical Specification, Part II-Nonradiological Environmental Protection Plan, Section 5.4.2.
This letter contains no new commitments. Should you have any questions, please contact Mr.
Jon Harner, Environmental Manager, at (269) 465-5901, extension 2102.
Sincerely, Michael K. Scarpello Regulatory Affairs Manager KMH/rdw
Enclosure:
Letter from Jon Harner, Indiana Michigan Power Company, to U.S. Environmental Protection Agency, dated April 19, 2013 c:
C. A. Casto - NRC Region III J. T. King - MPSC S. M. Krawec - AEP Ft Wayne MDEQ-RMD/RPS NRC Resident Inspector T. J. Wengert, NRC Washington DC
ENCLOSURE TO AEP-NRC-2013-43 Letter from Jon Harner, Indiana Michigan Power Company, to U.S. Environmental Protection Agency, dated April 19, 2013
INDIANA MICHIGAN POWERO A unit of American Electric Power Indiana Michigan Power Cook Nuclear Plant One Cook Place Bridgman, MI 49106 IndianaMichiganPower.com April 19, 2013 Director Section 608 Recycling Program Manager Global Programs Division Mail Code: 6205J United States Environmental Protection Agency 1200 Pennsylvania Avenue NW Washington D.C 20460.
Dear Sir or Madam:
We are providing you notification that we have successfully performed repairs of the chiller referenced in our previous notification letter dated January 31, 2013.
The follow-up testing was completed on March 28, 2013.
Identification of facility:
Cook Nuclear Plant located in Berrien County, Lake
- Township, Bridgman, Michigan.
The leak rate was calculated to be 109 % per year.
The method used to calculate leak rate is as follows:
Leak rate
_ pounds of refrigerant added X 365
(% per year) pounds of refrigerant sho,*er of
'ayslyear X 100%o
- days since in full charge refrigerant last added or 365 days System manufacturer's determination of correct full charge was used to determine full charge.
The leak rate above the trigger point was discovered on 7/9/2012.
The maximum allowable leak rate for this chiller is 35 pounds per year.
The leak locations were the liquid line solenoid valve and three of the unloader solenoid valves.
Any repair work that has already been completed; and the date when that work was completed:
The affected appliance was removed from service and evacuated (mothballed) on 1/18/2013, initial verification test and repairs to the liquid line solenoid valve and three of the unloader solenoid valves were repaired during the week of-March 15, 2013.
Follow up verification testing was completed on March 28, 2013.
USEPA April 19, 2013 Type of equipment, Make model size or unique ID.
12-OME-129-9 Westinghouse 25 ton glycol chiller.
R502 charged.
If you have any questions, please contact me at 269-465-5901 ext 2102 or Blair Zordell at 269-465-5901 ext 2006 Sincerely Jon H.
Harner Manager Environmental - Nuclear Enclosure c:
Ms.
Mary Douglas, MDNRE Air Quality Division Kalamazoo District Office USNRC per app.
B T.S.
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