RBG-30904, Semiannual Radioactive Effluent Release Rept Addendum for Jul-Dec 1988

Semiannual Radioactive Effluent Release Rept Addendum for Jul-Dec 1988

ML20247C445
Person / Time
Site:	River Bend
Issue date:	12/31/1988
From:	Cargill E, Fantacci C GULF STATES UTILITIES CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RBG-30904, NUDOCS 8905240472
Download: ML20247C445 (5)

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RIVER BEND STATICN - UNIT I SIMIAINUAL RADIOACTIVE l EMEMf IEEASE IEPORP ADDDUM

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REPORT PERIOD: JULY 1, 1988 THROUGH DECEMBER 31, 1988

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PREPARED BY: N - r- --

27!8 3 C. LT Mantacci, Radiological Engineering Sdpervicor APPROVFD BY: /

E. M. Cargill, }#irectdr; Radiological' Programs h h

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d SDfIA!MIAL RADIOACTIVE EFFIDENT RELDEE RENRP ADDENDUM FACILITY: River Bend Station - Unit I LICENSEE: Gulf States Utilities Cmpany RLTORT PERIOD: July 1, 1988 through December 31, 1988 This addendum is subnitted under River Bend Station (RBS) License Number NPF-47 and provides information that was not available when the Quarter 3/4 1988 RBS Semiannual Radioactive Effluent Release Report was being empiled. Specifically, this addendum provides an update for the follwing:

1. Tables 3, 4 and 5 Gaseous Effluents, Sr-89, Sr-90 Cmposite Results, pages 15,18 and 21.

2. Table 6, Liquid Effluents, Sr-89, Sr-90 and Fe-55 Cmposite Results, pages 25 and 26.

Fourth quarter gaseous doses were calculated using 3rd quarter cmposite data for Sr-89 and Sr-90. Cmposite results for the 4th quarter shwed a Sr-89 concentration less than that for 3rd quarter and a Sr-90 concentration i

belw the minimum detectable activity (MDA). Third quarter Sr-90 concentration was also < MDA. Therefore, doses calculated for 4th quarter are more conservative j

and will not be recalculated.

Doses due to liquid effluents were recalculated using l

4th quarter e mposite data (a positive analysis for Fe-55 was reported). The recalculation did not produce significant changes in either the population or maximum individual doses (Tables 10 and 12, pages 33 anl 37) .

It should be noted that an entry of "0.00E+00" Ci in the follwing tables does not represent the absence of a radionuclides; but rather it indicates that the concentration of a particular radionuclides was bel w the >

Imer Limit of Detection (LLD) .

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TABLE 3 ADDENDUM Effluent and Waste Ulaposal Semi-Imnual Report 1988 Year Gaseous Effluents - Sutunation of All Releases 3/4 Quarters

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l l l l l Est. Total j l _j Unit lOuarter 3l Quarter 4 l Error, % l C. Particulate l 1. Particulate with half- l i l l

l lives of >8 days Ci l (1) 2.72E-04 1.86E+0* l l 2. Average release rate l l for period uCi/sec (1) l 3.46E-05 l l 3. Percent of technical ,

i l specification limit  % (1) l 6.57E-01 l

4. Gross alpha j l radioactivity i Ci l (1) l (1) l (1) - Previously Reported

t TABLE 4 ALDENDUM Effluent and Waste Disposal Semiannual Report 1,988 Year Gaseous Effluents - Conditionally Elevated Releases 3/4 Quarters Continuous Mode Batch Mcde I l l l Nuclides Released j Unit l Quarter 3 l Quarter 4 Quarter 3 l Quarter 4

3. Parti.culates I I l Strontium-89 Ci ,

! (1) 3.96E-06 N/A N/A Strontium-90 l Ci  ! (1) l 0. 00E+00 (2) N/A l N/A I i I i i Total for Period l Ci j (1) l 2.71E-04 l N/A l N/A (1) - Previously Reported (2) Quarterly ccruposite particulate filter analysis inddcates a Mininun Detectable Activity (MDA) concentration of <3.0 E-16 u i/cc for the Main Plant Exhaust Duct. This value is less than o

the Lower Limit of Detection (LLD,4 of 1 x 10 -11 Ci/ml as specified in table 4.11.2.1.2-1 of RBS Technical Specifications.

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GULF STATES UTELITIES COMPANY RIVE A BEND STATION POST OFFICE BOX 220 ST. FRANCISVILLE. LOUISIANA 70775 AREA CODt 604 035 6094 346 8651 May 17, 1989 RBG- 30904 File Nos. G9.5, G9.25.1.5 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 Gentlemen:

River Bend Station : Unit 1 Docket'No. 50-458 Enclosed is the Addendum. to the Semiannual Radioactive Effluent ~

Release Report for the period of ' July 1 to December 31, 1988 submitted' to you previously-(ref. RBG-30187 dated February 28; 1989)- . This Addendum providos information which was not available at the time that the Semiannual Radioactive Effluent Release Report was being compiled.

This Addendum is being submitted in accordance ' with. Technical Specification 6.9.1.8 of Appendix A to River Bend Station (RBS)

License Number NPF-47.

Sincerely,

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[u J.E.Manager-River Booker Bend Oversight River Bend Nuclear Group JEB/LAE/CLF/ C/ch Enclosure cc: U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX-76011 NRC Resident Inspector P.O. Box 1051 St. Francisville, LA 70775