ML13330B483
| ML13330B483 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 02/23/1989 |
| From: | Morgan H SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8903100514 | |
| Download: ML13330B483 (3) | |
Text
Southern California Edison Company SAN ONOFRE NUCLEAR GENERATING STATION P.
. BOX 128 SAN CLEMENTE, CALIFORNIA 92672 H. E.MORGAN TELEPHONE STATION MANAGER February 23, 1989 (714) 368-6241 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555
Subject:
Docket Nos. 50-206, 50-361 and 50-362 Annual RCS Specific Activity Report San Onofre Nuclear Generating Station, Units 1, 2 and 3 Pursuant to Section 6.9.1.5 of Appendix A, Technical Specifications for Provisional Operating License No. DPR-13 for Unit 1 and Facility Operating Licenses NPF-10 and NPF-15 for Units 2 and 3, respectively, this submittal provides the required Annual Reactor Coolant System (RCS) Specific Activity Report for 1988. Unit 2 specific activity exceeded the limits of Technical Specification 3.4.7 on one occasion during 1988. There were no occasions in 1988.in which Unit 1 or 3 RCS specific activity exceeded Technical Specification 1
imits.
If you require any additional information, please so advise.
Sincerely, Enclosures cc:
F. R. Huey (USNRC Senior Resident Inspector, Units 1, 2 and 3)
J. B. Martin (Regional Administrator, USNRC Region V)
Institute of Nuclear Power Operations (INPO) 310051~D~
4 890223 PDR APDC
RCS SPECIFIC ACTIVITY REPORT SOUTHERN CALIFORNIA EDISON COMPANY SAN ONOFRE NUCLEAR GENERATING STATION UNIT NOS. 1, 2 AND 3, DOCKET NOS. 50-206, 50-361 AND 50-362 On August 22, 1988 at 0030, with Unit 2 in Mode 3, following a reactor shutdown required by plant Technical Specifications, analysis of a RCS sample indicated RCS specific activity exceeded 1.0 microcurie/gram Dose Equivalent (DE) 1-131 due to iodine spiking. RCS specific activity was reduced to less than 1.0 microcurie/gram DE I-131 by purification flow by 1630 the same day.
Therefore, the time duration when the specific activity of the primary coolant exceeded the radioiodine limit was approximately 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br />.
The additional information required by Technical Specification 6.9.1.5 is presented below and in Figure 1.
REACTOR POWER HISTORY Period Reactor Power 8/20/88, 0030 to 8/21/88, 1852 100%
8/21/88, 1852 to 8/21/88, 2213 100% Decreasing to 0%
8/21/88, 2213 to 8/22/88, 1630 0%
REACTOR COOLANT SYSTEM SPECIFIC ACTIVITY Date/Time of Sample DE 1-131 (uCi/gram) 8/19/88, 0830 0.07186 8/22/88, 0030 1.892 8/22/88, 0325 1.529 8/22/88, 0430 1.457 8/22/88, 0830 1.233 8/22/88, 1230 1.016 8/22/88, 1630 0.67 CLEANUP FLOW HISTORY Period Average Cleanup Flow (gpm) 8/20/88, 0030 to 8/22/88, 1630 84 *
- Hourly cleanup flow rate not available. Figure used is taken from average flow with two charging pumps in operation.
FIGURE 1 2.1-8/22/88 2
1.9 1.8 1.7 1.6
\\
1.5 1.4-1.4 1.414 o
1.3.
1.1-1 1.1 1.1 1.1 0.9
.847 8
0.8 0.7-0.7 0.6 -.
57 0.5-0.58 0.4 0.3 0.346 0.2 0.1 39 325 430 830 1230 1630 TIME (Hrs) a 1-133
+
1-131