ML20029D088

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Semiannual Radioactive Effluent Release Rept for Period Jul-Dec 1993
ML20029D088
Person / Time
Site: Big Rock Point File:Consumers Energy icon.png
Issue date: 12/31/1993
From:
CENTERIOR ENERGY
To:
Shared Package
ML20029D084 List:
References
NUDOCS 9405040023
Download: ML20029D088 (12)
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ATTACHMENT CONSUMERS POWER COMPANY BIG ROCK POINT PLANT DOCKET 50-155 SEMIANNUAL RADI0 ACTIVE EFFLUENT RELEASE REPORT I

For the period July through December 1993 i

Submitted April 27, 1994 i

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i 11 Pages 9405040023 932131 PDR ADOCK 0500 "g5 R

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BIG ROCK POINT RADI0 ACTIVE EFFLUENT RELEASE REPORT 1

l July 1.1993 to December 31. 1993--

This report provides information relating to radioactive effluent releases and solid radioactive waste disposal at Big Rock Point during the period of July 1 through December 31, 1993. The report format is detailed in Plant Technical Specification 6.9.2.2.

Big Rock Point was offline from July 1,1993 to September 3, 1993 for a scheduled refueling and maintenance outage.

Big Rock Point was online the remainder of 1993.

I 1.

Supplemental Information A.

Batch Releases 1

Information relating to continuous and batch releases of gaseous and liquid effluents is provided in Table HP 10.3-1.

i B.

Abnormal Releases 4

None

]

C.

Lower Limits of Detection (LLDs) for gaseous and liquid effluents is provided in Attachment 1.

D.

Radioactive Effluent-Monitoring Instrumentation

)

Big Rock Point Technical Specification 13.1.1.1.b requires that a

with less than the minimum number of radioactive effluent monitoring instrument channels operable, take the action shown in Table 13-1.

Exert b-fforts to return'the instruments to i

operable status within Jo days and, if unsuccessful, explain in l

the ne

  • Radioactive Effluent Rcport why the inoperability was not l

corrected in a timely manner.

i No radioactive effluent monitoring instrument channels were

{

inoperable for more than 30 days during this reporting period.

E.

Big Rock Point submitted a proposed technical specification change on March 4,1993 to implement the revised 10CFR20 (later revised i

on April 14,1994). The NRC (NRR) requested this proposed change i

be withdrawn in July, 1993 to await guidance for modification of technical specifications to reflect revisions to 10CFR20.

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j The old 10CFR20 concentration limits for unrestricted areas (MPCs) i were used in this report to demonstrate compliance since it is j

consistent with past p uttice and is also consistent with the model technical specification 3.11.1.1 which increased the effluent concentration values of 10CFR20.1001-20.2402; Appendix B, i

Table 2, Column 2 by a factor of 10. This allows the licensee the same operational flexability as the previous 10CFR20 MPC values.

1 Big Rock Poim.till evaluate technical specification changes when i

j the general guidace becomes available.

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'2.

Gaseous Effluents Table HP 10.3-2 lists and summarizes all gaseous radioactive effluents released during the reporting period.

The unidentified beta was 0.00E+00% of the total release.

3.

Liauid Effluents Table HP 10.3-3 lists and summarizes all liquid radioactive effluents released during the reporting period.

The maximum liquid effluent release concentration was 8.82E-07 pCi/ml. The unidentified beta was 0.00E+00% of the total releases.

4.

Solid Waste There were no solid radwaste shipments from July 1 to December 31, 1993.

5.

Summary of Radioloaical Impact on Man Potential doses to individuals and populations were calculated using GASPAR and LADTAP computer program codes. The third and fourth quarter values for curies released were input for ea, nuclide and summarized as follows:

A.

The offsite air dose at the site boundary (0.57 mi E) due to noble gases were 6.62E-04 millirad beta and 9.46E-04 millirad gamma for the third quarter; and 3.00E-03 millirad beta and 4.31E-03 millirad gamma for the fourth quarter.

The maximum noble gas offsite air dose to the nearest residence (1.4 mi E) occurred during the fourth quarter, being 1.52E-0?. millirad beta and 2.66E-02 millirad gamma.

B.

The most restrictive organ dose to an individual in an unrestricted area (based on identified critical receptors) from gaseous effluent releases (tritium, particulate and iodine) was the infant thyrok 'or the third quarter and the child bone for the fourth quarte:

Joses were 7.49E-04 and 3.71E-03 millirem, respectively.

C.

Integrated total body does to the general population and average doses to individuals within the population from gaseous effluent release pathways to a distance of 50 miles from the site boundary were:

5.06E-03 Person-rem and 2.79E-05 millirem for the third quarter; and 2.23E-02 Person-rem and 1.23E-04 millirem for the fourth quarter.

D.

The maximum total body dose to an individual in unrestricted water-related exposure pathways was 6.23E-02 millirem (adult) for the third quarter. The maximum organ dose was 1.14E-01 millirem (teenager liver) for the third quarter. There were no liquid effluent reloses during the fourth quartet.

E.

Integrated total body doses to the general population and average doses to individuals within the population from liquid effluent release pathways to a distance of 50 miles from the site boundary were 5.06E-02 Person-rem and 2.78E-04 millirem, respectively, for the third quarter. There were no liquid effluent releases during the fourth quarter.

' 6.

Process Control Proaram (PCP)

There were no changes to the PCP during this reporting period.

7.

Offsite Dose Calculation Manual (ODCM)

There were no changes to the ODCM during this reporting period.

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BIG ROCK POINT RADI0 ACTIVE EFFLUENT RELEASE REPORT TABLE HP 10.3-1 BATCH RELEASES July 1. 1993 to December 31. 1993 A.

Gaseous - Continuous Release B.

LIQUID Units 3rd Quarter 4th Quarter Number of Releases 8

0 Total Release Time Minutes 1425 0

Maximum Release Time Minutes 249 0

Average Release Time Minutes 178 0

Minimum Release Time Minutes 114 0

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BJG ROCK POINT RADI0 ACTIVE 1

EFFLUENT RELEASE REPORT i

i TABLE HP 10.3-2 1

GASEOUS EFFLUENTS - SUMMATION OF RELEASES 5

July 1.1993 to December 31. 1993-

}

A.

FISSION AND ACTIVATION GASES Units 3rd Qtr 4th Qtr Est Total l

Error %

1.

Total release Ci 5.65E+02 2.28E+03

)

2.

Average release rate for period uCi/sec 7.11E+01 2.87E+02 5.0 3.

Percent of annual avg MPC 1.05E-02 4.20E-02 B.

10 DINES

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1.

Total Iodine Ci 1.44E-03 4.91E-03 j

2.

Average release rate for period uCi/sec 1.81E-04 6.18E-04 5.0 j

3.

Percent of annual avg MPC 3.47E-06 1.34E-05

)

C.

PARTICULATES 1.

Particulates with half-life >

'Ci 1.87E-04 4.34E-04 i

8 days l

2.

Average release rate for period uti/sec 2.35E-05 5.46E-05 l

3.

Percent of annual avg MPC 2.69E-07 6.23E-07 16.7 4.

Gross alpha radioactivity Ci 3.18E-06 6.78E-07 D.

TRITIUM 1.

Total release Ci 5.62E-01 6.40E-01 i

2.

Average release rate for period uCi/sec 7.07E-02 8.05E-02 l

3.

Percent of annual avg MPC 1.84E-06 2.10E-06 l

E.

1.

Beta Air dose at Site mrad 6.62E-04 3.00E-03 Boundary due to Noble Gases j

(TS 13.1.4.2a) 2.

Percent limit 6.62E-03 3.00E-02 3.

Gamma Air dose at Site mrad 9.46E-04 4.31E-03 Boundary due to Noble Gases (TS 13.1.4.2a) 4.

Percent limit 1.89E-02 8.62E-02 F.

1.

Maximum Organ Dose to Public mrem 7.49E-04 3.71E-03 Based on Critical Receptors (TS 13.1.4.3a) 2.

Percent of Limit 9.99E-03 4.95E-02 "N_01E:

Data is reported for I-131 and I-133 only.

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BIG ROCK POINT RADI0 ACTIVE EFFLUENT RELEASE REPORT TABLE HP 10.3-2 GASE0US EFFLUENTS July 1.1993 to December 31. 1993 I

1.

FISSION GASES UNITS 3rd QUARTER 4th QUARTER Krypton-85m C1 1.32E+01 6.37E+01 Krypton-87 Ci 4.86E+01 2.14E+02 Krypton-88 Ci 3.72E+01 1.73E+02 Xenon-133 Ci 1.31E+01 8.65E+01 Xenon-133m Ci

<LLD

<LLD Xenon-135 Ci 5.87E+01 2.61E+02 Xenon-135m Ci 9.06E+01 3.48E+02 Xenon-138 Ci 3.04E+02 1.13E+03 Total for Period Ci 5.65E+02 2.28E+03 2.

10 DINES Iodine-131 Ci 2.27E-04 1.10E-03 Iodine-132 Ci

<LLD

<LLD Iodine-133 Ci 1.21E-03 3.81E-03 Iodine-134 Ci

<LLD

<LLD Iodine-135 Ci 4.73E-04

<LLD Total for Period Ci 1.91E-03 4.91E-03 1

BIG ROCK POINT RADI0 ACTIVE EFFLUENT RELEASE RL' ORT TABLE HP 10.3-2 GASEOUS EFFLUENTS July 1.1993 to December 31, 1993 3.

PARTICULATES*

UNITS 3rd QUARTER 4th QUARTER Chromium-51 Ci 3.66E-06 1.42E-05 Manganese-54 Ci 3.83E-05 2.45E-05 Cobalt-58 Ci

<LLD

<LLD Iron-59 Ci

<LLD

<LLD Cobalt-60 Ci 5.45E-05 4.76E-05 Zinc-65 Ci 6.39E-06

<LLD Silver-110m Ci 8.36E-06 7.21E-07 Cesium-134 Ci 5.20E-06 2.39E-06 Cesium-137 Ci 3.21E-05 7.06E-05 Barium-140 Ci 2.33E-05 1.42E-04 Cerium-141 Ci

<LLD

<LLD Cerium-144 Ci

<LLD

<LLD Strontium-89 Ci 1.45E-05 1.27E-04 Strontium-90 Ci 3.25E-07 1.38E-06 Niobium-95 Ci

<LLD

<LLD Antimony-124 Ci

<LLD 3.19E-06

    • Bromine-82 Ci 8.33E-05 4.28E-04
    • Strontium-91 Ci 1.99E-04 1.20E-03
    • Molybdenum-99 Ci 2.63E-06 1.59E-05
    • Lanthanum-140 Ci 5.58E-05 3.04E-04
    • Sodium-24 Ci

<LLD 2.97E-05

    • Arsenic-76 Ci

<LLD 2.42E-05 Net Ci

<LLD

<LLD unidentified beta Total Ci 1.87E-04 4.34E-04 Particulatet with half-lives >8 days.

Particulates with half-lives <8 days; not reflected in overall isotopic totals.

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l BIG ROCK POINT RADI0 ACTIVE j

EFFLUENT RELEASE REPORT TABLE HP 10.3-3 l

LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES July 1.1993 to December 31. 1993 i

Est Total A.

FISSION AND ACTIVATION PRODUCTS Units 3rd Otr 4th Otr Error %

1.

Total release (Not including Ci tritium. aases. aloha) 9.19E-02 0.00E+00 2.

Average diluted concentration durina period uCi/ml 7.86E-09 N/A 4.5 3.

Percent of MPC 2.93E-02 N/A l

B.

TRITIUM 1.

Total Release Ci 1.35E-01 0.00E+00 2.

Average diluted concentration durina period uti/ml 1.15E-08 N/A 2.0 3.

Percent of MPC 3.83E-04 N/A C.

DISSOLVED AND ENTRAINED GASES 1.

Total Release Ci

<LLD 0.00E+00 2.

Average diluted concentration durina period uCi/ml N/A N/A N/A 3.

Percent of MPC N/A N/A D.

GROSS ALPHA RADI0 ACTIVITY l

(Total Release)

Ci 3.97E-06 0.00E+00 E.

Y1LUME OF WASTE RELEASED (Prior to Dilution)

Liters 1.45E+05 0.00E+00 F.

VOLUME OF DILUTION WATER USED DURING PERIOD Liters 1.17E+10 2.42E+10 l

G.

MAXIMUM DOSE COMMITMENT - WHOLEBODY mrem 6.23E-02 0.00E+00 Percent of TS 13.1.4.la Wholebody limit 4.15E+00 0.00E+00

~H.

MAXIMUM DOSE COMMITMENT - ORGAN mrem 1.14E-01 0.00E+00 Percent of TS 13.1.4.la Oraan limit 2.28E+00 0.00E+00 l

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4 BIG ROCK POINT RADI0 ACTIVE EFFLUENT RELEASE REPORT TABLE HP 10.3-3 t

LIQUID EFFLUENTS 4

July 1.1993 to December 31. 1993 1.

NUCLIDES RELEASEEM Units 3rd Quarter 4th Quarter Chromium-51 Ci 9.28E-04 0.00E+00 Manganese-54 Ci 3.68E-02 0.00E+00 Cobalt-58 Ci 4.78E-04 0.00E+00 Iron 59 Ci 4.63E-03 0.00E+00 Cobalt-50 Ci 3.44E-02 0.00E+00 Zinc-65 Ci 8.11E-04 0.00E+00 Strontium-89 Ci 1.64E-05 0.00E+00 Strontium-90 Ci 1.66E-04 0.00E+00 Molybdenum-99 Ci

<LLD 0.00E+00 Silver-110m Ci 3.28E-04 0.00E+00 Iodine-131 Ci 1.61E-04 0.00E+00 Cesium-134 Ci 9.54E-04 0.00E+00 Cesium-137 Ci 1.16E-02 0.00E+00 Lanthanum-140 Ci

<LLD 0.00E+00 Tantalum-182 Ci 2.19E-04 0.00E+00 Niobium-95 Ci 2.04E-04 0.00E+00 Antimony-124 Ci 7.62E-05 0.00E+00 Tin-113 Ci 1.06E-04 0.00E+00 Strontium-92 Ci

<LLD 0.00E+00 Net Unidentified Beta Ci

<LLD 0.00E+00 Fission & Activation Product Total (Above)

Ci 9.19E-02 0.00E+00 Xenon-133 Ci

<LLD 0.00E+00

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Tritium Ci 1.35E-01 0.00E+00 Grand Total Ci 2.27E-01 0.00E+00

BIG ROCK POINT RADI0 ACTIVE' EFFLUENT RELEASE REPORT TABLE HP 10.3-4 SOLID WASTE July 1. 1993 to December 31. 1993 Waste Source of Solidification Container Volume

  • Total
  • Principal Class Waste Aaent Tvoe (cu ft) Curies Ra(fionuclides No solid radwaste shipments from July 1, 1993 to December 31, 1993.

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  • HOIE: Gamma isotopes are measured quantities, all other isotopes are estimated.

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BIG ROCK POINT RADIDACTIVE EFFLUENT RELEASE REPORT 1

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Lower limits of Detection (LLDs) for Bia Rock Effluents Gaseous Effluents Nuclide LLD (uCi/cc)

Xe-133m 6.00E-05 i

Co-58 3.00E-14 Ce-141 3.00E-14 Ce-144 1.00E-13 Fe-59 9.00E-14 Cs-134 3.00E-14 Liauid Effluents Nuclide LLD (uci/cc)

C0-58 1.00E-07 Zn-65 3.00E-07 Mo-99 8.00E-08 Fe-59 2.00E-07 I-131 1.00E-07 Cs-134 2.00E-07 Xe-133 3.00E-07 Ce-141 2.00E-07 Ce-144 7.00E-07 s

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