ML19309A675
| ML19309A675 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 04/28/1975 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Anthony Giambusso Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8003310648 | |
| Download: ML19309A675 (5) | |
Text
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ANNUAL & SEMI-ANNUAL OPERATING REPORTS (LICENSING)
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NRC DISTRIE _ ilON FOR PART 50 DOCKET MATE AL
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CONTROL NO:
4894 FILE: REPORTS FILE FROM:
SMUD DATE OF DOC DATE REC'D LTR TWX RPT OTHER
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95813 4-28-75 5-5-75 XX AA TO:
ORIG CC OTHER SENT AEC PDR XX Mr. A. Giambusso 1 signed SENT LOCAL PDR CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:
XX 1
50-312 ENCLOSURES:
DESCRIPTION:
Ltr trans the following:
Change No. 1 to the Rancho Seco Nuclear Station Annual Report for the period ending 12 74....
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SCHWENCER (L) ZIEMANN (L)
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STOLZ (L)
DICKER (E)
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EPA WITH THE FOLLOWING W/ Copies W/ Copies W/ Copies W/ Copies BREAKDOWN:
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KNIGHlON (E)
SPELS HDQS; 1 CY EPA REGION.
W/ Copies W/ Copies W/ Copies W/ Copies KNIEL (L) 4URPLE (L)
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BRAITMAN OGC, ROOM P-506A #MACCARY GAMMILL H. GEARIN (L)
SALTZMAN GOSSICK/ STAFF KNIGHT KASTNER E. GOU LBOURNE (L)
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CASE PAWLICKl BALLARD P. KREUTZER (E)
GIAMBUSSO SHAO SPANG LER J. LEE (L)
PLANS BOYD STELLO M. MAIGRET (L)
MCDONALD MOORE (L)
HOUSTON
_ ENVIRO S. REED (E)
CHAPMAN DEYOUNG (L)
NOVAK MULLER M. SERVICE (L)
DUBE (Ltr)
SKOVHOLT (L)
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E. COUPE GOLLER (L) (Ltr)
/IPPOLITO KNIGHTON M. SLATER (E)
PETERSON P. CO LLINS
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DENISE LONG EGAN S. TEETS (L)
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$SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 S Street, Box 15830, Sacramento, California 95813: (916) 452-3211 April 28, 1975 Mr. Angelo Giambusso, Director Division of Reactor Licensing Office of Regulation Nuclear Regulatory Commissian Washington, D.C.
20545 Re: Rar.cho Seco Unit 1
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Docket No.59-312
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Dear Mr. Giambusso:
i Please find enclosed forty (40) copies of Change No.1 to the "l
Rancho Seco Nuclear Station Annual Report for the period ending December 31, 1974.
k This change corrects values of radioactive liquid effluent which were found to be in error during additional review of the annual report subsequent to its submission.
The errors were caused by not taking credit for dilution of radioactivity as it was released from the retention basin and an error uncovered in the transcription of laboratory measured activity to release documents.
Specifically, the changes occur on Pages 2-8, 2-10 and 2-11 of the annual report. On Page 2-8 the total Tritium release is.00757 Ci vice.0197 Ci when corrected for the error in transcription.
Page 2-10 reflects corrections for concentrations of radionuclides not including Tritium when corrected for additional dilution water which had been inadvertently left out on initial calculations. Percent of applicable limits are also changed to account for additional dilution water and are taken as limits of 10 CFR 20, Table 2, Column 2 for unidentified isotopes.
Please insert these changes in the copies of the annual report previously forwarded to you to bring the report up to date.
Respectfully,
./ - J1Ab(
J. J. Mattimoe Assistant General Manager If.3 31l.
and Chief Engineer Enclosures AN ELECTRIC SYSTEM S E RVIN G MORE THAN 600,000 IN THE HEART OF C A LI FO R N I A
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s released in October. An improperly routed drain sum in a con,-
trolled area caused some floor drains to be processed through the ion exchange regeneration system. The radioactivity was held up. sampled and measured in the regenerant holdup tank
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and then in retention basins prior to offsite release. The.
pathway.by which this discharge occurred has been physically removed.
The total activity released contained 0.00200 Ci of y
fission and activation products and 0.00757 ci of Tritium.
The low level of activity precluded identification of specific isotopes. The summary of the liquid released is given in Tables
.I and 2.
2.2.6.2 GASEOUS RELEASES Since Rancho Seco is a pressurized water reactor the gaseous releases are composed of batch releases from the waste gas decay tanks:. batch releases from the containment building purges, and continuous releases from the auxiliary building stacks and the gland stent exhaust. The total gaseous releases for.this reporting perlod were 0.00298 Ci of fission gases, primar1iy Xenons 133 and 135 and Krypton 85; 0.00606 ci of Tritium, 0.00000956 ci of particulates and 0.000000809 Ci gross alpha activity. The low levels of the gaseous releases n're presented in Tables 3, 4, and 5 2.2.6.3 SOLID WASTES There were no solid wastes shipped from the Rancho Seco reactor facility during the report period.
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TA8LE 1.
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EFFLUENT AND WASTE DISPOSAL SEMlANNUAL REPORT FACILITY:
RANCHO SECO (UNIT 1) DOCKET NO. 50-312 REPORTING PERIOD:
3RD and 4TH QUARTER, 1974
- ftADl0 ACTIVE LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES
- 3RD QTR.*
4TH QTR.*
EST. TOTAL-UNITS
SUMMARY
SUMMARY
ERROR, %
3.
FISSION & ACTIVATION PRODUCTS 1.
Total Release (not Ci 0.00E0 2.00E-03
+2.6E+01 l 1 including tritium, gases, alpha) 2.
Average diluted con-pCI/mi 0.00E0 3.70E l
- centration during.
period
-3.
Percent of appli-0.00E0 3.7E+01
[l cable Iimit
).
TRITIUM l.
Total Release Cl 0.00E0 7.57E-03
+S.5E+01 l
l' 2.
Average diluted con-pCi/ml 0.00E0 1.40E-07 l1 centration during perlod 3
Percent of appli 0.00E0 4.7E-03 l1 cable 1imit S.
DISSOLVED & ENTRAINED j
GASES I
1.
Total Release Cl 0.00E0 0.00E0 2.
Average diluted con-pCi/ml 0.00E0 0.00E0 centration during period 3.
Percent of appiI--
0.00E0 0.00E0 cable limit D.
GROSS ALPHA RADIDACTIVITY
,1.
Total Release Cl 0.00E0 0.00E0 E.
VOLUME OF WASTE RELEASED Liters 0.00E0 3.79E+06
+1.0E+01 l1 F.
VOLUME OF DILUTION WATER USED DURING PERIOD OF 1
RADIOACTIVE LIQUID RELEASES Liters 0.00E0 5.03E+07
+0.2E+01 nthly summaries not included since only two releases occurred during h2 reporting period;-both during the period of October 14 through October
, 1974.
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2-10
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TABLE 2 EFFLUENT'AND WASTE DISPOSAL SEMIANNUAL REPORT,
FACILITY:
RANCHO SECO (UNIT I) DOCKET NO. 50-312 AVERAGE QUARTERLY RESULTS REPORTING PERIOD:
3RD AND 4TH QUARTER, '974 LIQUID EFFLUENTS BATCH MODE NUCLIDES RELEASED UNIT QUARTER 3 QUARTER 4 Strontium-89 CI 0.00E0 0.00E0
- Strontium-90 CI 0.00E0 0.00E0 Cesium-134 CI 0.00E0 0.00E0 Cesium-137 Ci 0.00E0 0.00E0 lodine-131 Cl 0.00E0 0.00E0 Cobal t-58 Ci 0.00E0 0.00E0 Cobalt-60 Ci 0.00E0 0.00E0 Iron-59 Ci 0.00E0 0.00E0 Zinc-65 CI 0.00E0 0.00E0 j
Manganese-54 CI 0.00E0 0.00E0 Chronitm-Si CI 0.00E0 0.00E0 Zirconium-Niobium-95 CI 0.00E0 0.00E0 Mo'lybdenum-99 CI 0.00E0 0.00E0 Technetium-99m CI 0.00E0 0.00E0 Barium-Lanthanum-140 CI 0.00E0 0.00E0 Cerium-141 CI 0.00E0 0.00E0 Other (specify)
CI 0.00E0 7.57E-03 l 1
- 2. Xenon-133 CI 0.00E0 0.00E0
- 3. Xenon-135 CI 0.00E0 0.00E0 Unidentified Ci 0.00E0 2.00E-03 Total for period (above)
CI 0.00E0 9.57E-03 l 1 2-11 4
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