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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER)
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Text
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MAIRE HARHEE AToml0 POWER 00MPARUe avaug,,Ka?n"e%'s (207) 623-3521 e
July 15, 1986 l HN-86-92 GDH-86-171 l Region I United States Nuclear Regulatory Commission Office of Inspection and Enforcement 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention: Dr. Thomas E. Hurley, Regional Administrator
References:
(a) License No. DPR-36 (Docket No. 50-309)
Subject:
Maine Yankee Technical Specification 3.2.C Gentlemen: I The following report on the primary coolant system iodine spike is submitted pursuant to Maine Yankee Technical Specification 3.2.C.
On June 12, 1986 at 1320 hours0.0153 days <br />0.367 hours <br />0.00218 weeks <br />5.0226e-4 months <br />, the plant tripped when the #2 Excess Flow Check Valve inadvertently closed. At 1510 hours0.0175 days <br />0.419 hours <br />0.0025 weeks <br />5.74555e-4 months <br /> on June 12, 1986, Dose Equivalent Iodine (DEI) activity exceeded 1.0 uCi/ gram and remained above this level until 0525 hours0.00608 days <br />0.146 hours <br />8.680556e-4 weeks <br />1.997625e-4 months <br /> on June 13, 1986.
The DEI activity, along with plant operating characteristics, and the fuel burnup by core region are presented in Tables 1 and 2, respectively.
Very truly yours, HAINE YANKEE ATOMIC P0HER COMPANY
) J J.9 W >
G. D. Whittier, Manager Nuclear Engineering and Licensing
/
GDH/plb Enclosure cc: Mr. Ashok C. Thadani Hr. Pat Sears Mr. Cornelius F. Holdr-7752L-GDH l
l 8608120107 860715 gDR ADOCK 05000309 l PDR
[-
". o MAINE YANKEE ATOMIC POWER COMPANV TABLE 1. Reactor Coolant System Dose Equivalent I-131 (DEI) Activity and Plant Operating Characteristics, June 10-13, 1986.
LETDOHN FLOH DEGASSIFIER D_ ATE II3E DEI (uCi/a) REACTOR P0HER(%) RATE (aom) OPERATION 06/10/86 1.10E-1 , 99 80 0 06/11/86 1.17E-1 99 80 0
- 06/12/86 1003 1.01E-1 99 80 DA-1A 860 gal.
1320 0 80 DA-1B- 1735 gal.
1510 2.35E0 0 124 l
1600 2.40E0 0 124 l'
1705 2.31E0 0 124 1820 2.31E0 0 125 4 i 2.09E0 1930 0 124 2135 1.92E0 0 123 2330 1.56E0 0 124 06/13/86 0130 1.32E0 0 125 0325 1.07E0 0 123 0525 9.07E-1 0 124 l
l l
7752L-GDH 2A l
O MAINE YANKEE ATOMIC POWER COMPANV I
TABLE 2. Fuel Burnup By Core Region.
CYCLE BURNUP (MHD/MT) TOTAL BURNUP (MHD/MT)
REGION- 06/12/86 06/16/86 06/12/86 06/16/61 E16 5668 5668 26102 26102 LO 4773 4773 26099 26099 L4 6105 6105 33702 33702 L8 3990 3990- -30478 30478 L12 5653 5653 34813 34813 2
M0 7466 7466 19365 19365 M4 6265 6265 19201 19201 M8 7189 7189 22660 22660 N0 6681 6681 6681 6681 i N4 6437 6437 6437 6437 N8 7673 7673 7673 7673 Core 6227 6227 19453 19453 1
1 :
I l
l l
- 7752L-GDH
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