L-77-100, Forwards Annual Radiological Environmental Monitoring Report for 1/1-12/31/1976

Forwards Annual Radiological Environmental Monitoring Report for 1/1-12/31/1976

ML18113A493
Person / Time
Site:	Saint Lucie
Issue date:	03/30/1977
From:	Robert E. Uhrig Florida Power & Light Co
To:	Moseley N NRC/RGN-II
References
L-77-100
Download: ML18113A493 (16)

Text

FLORIDA PONER 6 LIGHT COMPANY

ST. LUCIE PLAViT UNIT gl LICENSE ~wDPR-67 DOCKET NO. 50-335

'ANNUAL RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT FOR THE PERIOD OF JANUARY 1, 1976 TO DECEMBER 31, 1976 PREPARED FEBRUARY 15, 1977

INTRODUCTION This report is submitted in accordance with St. Lucie Plant Technical Specification Section 5.6.1.b.

All environmental samples were collected and analyzed during this reporting period in accordance with Technical Specifica-tion requirements. The minimum frequency of collection and analyses for specific radionuclide species as required by these specifications has been met or exceeded.

No harmful effects or evidence of irreversible damage have been detected by this monitoring program.

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ST. LUCIE UNIT 1 Radiolo ical Environmental Monitorin St. Lucie Unit 1 begansignificant power production'n mid-1976. Its radiological environmental monitoring programs have been existent since January, 1974. For convenience, this report considers monitoring data obtained during the period from 7-01-76 to 12-31-76 as being representative of data related to Unit 1's operational status during 1976. Comparative data for the period 1-01-75 to 6-30-76 are presented as part of this report.

Radiological environmental monitoring at St. Lucie Plant is carried out by the Orlando Radiological Laboratory of the Department of Health and Rehabilitative Services of Florida. All samples are collected and analyzed in accordance with St; Lucie Unit 1's Technical Specifications.

A total of 565 samples collected from 24 different locations were analyzed during the period of this report. Table REM-1 summarizes the mean and range values of these analyses. Since 40 K, 226 Ra and 232 Th are naturally occurring radionuclides, no data for these species are recorded in this table. The gross beta data reported is representative of these and other naturally occurring radio-nuclides Except as noted in Table REM-2, none of the sampling locations used in this radiological environmental monitoring program showed evidence of having concentrations of a particular radionuclide in a specific sample material higher than the observed mean for that radionuclide at all sampling locations. The Chinese bomb 'fallout (as 90 Sr, 95 Zr, 131 I, 137 Cs and 144 Ce) observed accumulations at some locations were not indicative of any effluent release by Unit 1 during this operational period.

A Split-Sampling Program, involving sample materials collected around the St. Lucie Plant site, has been initiated between the Orlando Radiological Laboratory and ERDA's HSL Laboratory, idaho Falls. As this data becomes available, they will be included in these reports.

TABLE RHM-1:

RADIOLOGICAL HNVIRONMHNTAI Facility St. Lucie No. 1 Docket Numbers 50-335 MONITORING Program Summary Location IIutchinson Island, Fla. Reporting Period 7-01-76 to Z2-31-76

'EDIUM OR ANALYSIS ALL SAMPLH LOCATIONS PATINAY SAMPLHD PERFORMED (Units) LLD PRH OP 1976 1975-76 Type Number BG MEAN RANGE MEAN RANGE

1. Air Filters 0.004- 0. Oll 0. 007-1.1 Air Particulates Gross 236 0. 002 1.0 .010 3 Beta 0.015 0. 015 (pCi/m )

.318 0.030-1.09 1.1 Air Iodines 131I 228 0. 008 ND" (pCi/m ) .093 0. 06-

0. 12

1. 1 Ganmascan- 27.

bhnth3. sites of Falters (pci/m )

89 0.005 1.1 Strontium Anal ses Sr 27 Quarterl si 90SSr of Filters 27 0.002 (pCi/m )

l. 2 Direct Radiation- 36 ,6 3-18 4.2 3.2-4.75 TLD (pRem/hr)

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'VII!1,1. Ill M-1 (r~ont'1 Hl DXUH OR ANALYSIS ALL SAMPLE LOCATIONS PATHWAY SAMPLED PERFORMED (Units) LLD i RE-OP 1976 1-975-76 Type Number BG MEAN RANGE MEAN RANGE

2. Water 2.1 Surface 2.1. 1 Water-Dis-(pCi/1) 199 . <200 <200 <200 89SSr 1.6 (1 6)n 90 Sr 0.8 (0.8) 2.1.2 Ocean (pCi/1) H 12 199 <200 <200 <200 89 Sr 12 1.6 (1-6) 90SSr 12 0.8 (0 8) 2.1.3 Estaurine (pCi/1) 199 <200 <200 <200 2.2 Ground Water Well (pCi 1) 0.8 (0. 8)

H 199. <200 <200 2.3 Potable Water (pCi 1) 0.8 (0-8)

H 199. <200 <200 <200

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'l'All))'. ill li-1: (c~ont'4 MEDIUM OR ANALYSIS ALL SAMPLE LOCATIONS PATlll)tAY SAMPLED PERI"ORMHD (l)ni ts) LLD l'Rl"-OP 1976 1975 -76 Type Number l3G MEAN RANGE Ml";AN RANGH

3. Bottcm Sediment 89 (pCi/kg) Sr 1.6 (1. 6) 90SSr 0.8 (0. 8) 3.2 Ocean 89 (pCi/kg) Sr 1.6 (1. 6) 90SSr 0.8 (0.8) 3.2 Beach (Sand) 89 (pCi g) Sr 1.6 (l. 6) 90 0.8o Sr (0. 8)

3. 3 Hstaurine

~/gCi g) (p) (p) (p)

4. 1 Crustacea

~pCi g) 89SSr (8) 90SSr 4~ (4) 4.2 Fish 4.2.1 Fish-Carni-vore (pCi/kg) 89SSr 8. (8) 90 Sr 4. (4)

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'hilt.l'. lli:.hl-1. (o~ont'd MliDT.UM OR ANALYSIS ALIi SAMPLE LOCATTONS PA'I'IIWAY SAMPIiHD IERI"ORMHD (IJni ts) LLD PRH-OP 1976 1975-76 TJJpe Nuiriber b RANGf" MEAN RANGE 4.2.2 Fish-Herbi-vore 89 (pCi/kg) Sr (8) 90SSr '(4)

5. Terrestrial Biota 5.1 Milk 137 (pCi/1) 15 7. 85 20-64 ND-30 89 15 90S 15 3.5 1.5-5.5 131I 15 0.5 (1.1-27) 5.2 Focd 5.2.1 ~Food Cno 89 (Citrus) Sr =

(s)

(pCi/kg) 90S (s) 28 12-56 5.2.2 F~ood CI'0 (Vegetable) Y (s)

(pCi g) 131~ 16 (s)

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Notes to Table REM-1

a. LLD = nominal limits of detection as defined in HASL (Rev. 8/73)

D-08-1 to -3.

b. Nhe e applicable, mean proportional BG data is derived, from analyses made prior to 1-01-75.

c~ For the period of 7-01-76 to 12-31-76; Unit 1 began significant power production in mid-1976.,

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d. For the period of 1-01-'75 to 6-30-76.

e. Data for July-September, 1976 prior to Chinese bomb fallout accumulations in the St. Lucie.Plant area. Control Sample, H-32 showed these results during this period:

Mean: 0.010 pCi/m 3 Range: 0. 006 0. 014 pC'/m 3 Data for October-December, 1976 after Chinese bomb fallout accumulations in the St. Lucie Plant area. Control Sample, H-32 .showed these results during this period:

Mean: 0.318 pCi/m 3 Range: 0. 033 0. 94 pCi/m 3 95 131 144 90 Radionuclides: Zrg Ig Ceg Sr, 137'rincipal Cs

g. NA = Not applicable in this period. '.

ND = Not detected.

i., All locations, including Control Sample, H-32, during the period July-September, 1976 (prior to Chinese bomb fallout

'accumulations) showed no detectable lI.

j. During October, 1976, following Chinese bomb fallout accumula-tions, all sample locations (including Control Sample H-32) provided these data for 1 I:

Mean: 0.09 pCi/m 3 3

Range: 0. 06 0.12 pCi/m In November-December, 1976, no 131 I was detected at these locations.

( ~ Air filter composites for all sampling locations, including Control Sample H-32, during the period July-September, 1976 (prior to Chinese bomb fallout accumulations) showed no detectable radioactivity.

Notes to Table REM-1 (Continued)

1. Zn October-November, 1976, following Chinese 'fallout accumula-tions, gamma scans of composites showed Zr and 4Ce in these ranges:

95 0.19 pCi/m 3 Zr: 0.03 ~

144,Ce: 0.18 .

0.32 pCi/m 3 The assays of the December, 1976 composites showed no detectable radionuclides.

m. Analyses not completed; will be reported later.

n. ( ) = no radioactivity detected in Pre-Op analysis. All values appearing in ( )'s are LLD's used as estimates of 0

Pre-Op BG.

LLD's water.

40 for 'r 89 90 in sediments accepted 226 Ra and 232 Th as being same for p- K, only radionuclides found in this sample.

89 Sr not detected except in November, 1976 Sample (H40);

conc. was 5+2 pCi/l.

131 I not detected except in October-November, following Chinese bomb fallout accumulation; concentrations at that time showed a range of from 1.1-27.0 pCi/1.

s. No samples analyzed in this period.

TA13LI'. RI:M-2:

Facility St. Lucie No. 1 Docket Number~ 50-335 SAMPLXNG LOCATIONS WXTII IIXGIIHST ANNUAL MEAN Location Hotcninson 1sland Fla. Report period~1-76 to 12-31-76 .

I'IHDXUM OR LOCATXON WXTII ElXGIIHST ANNUAL MEAN PATIIWAY SAMPLED ANALYSXS NUMBER MEAN NUMBER 1976 1975-76 (UNXTQ) POR or" (RANGE) IIXGII SXTH MEAN RANGE MEAN RANGE SITES SXTHS a) All sampling locations, except during period of October-Nov~, 1976, follawing Chinese banb fallout locations, did not exceed highest annual mean for any particular radionuclide. Table RKK-1 lists information on fallout radionuclides observed during the October-Nov~, 1976 period.

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NBC ~:Tl'IDUTION roll PAI'tT b0 DOCl(LT MATEI'IAL EIeVl'Roi~rilK!I7AL ro: I- (IOM: DATE or ooculrcwT Florida Power & Light Company 3/30/77 Hr. Norman C. Hoseley Miami, Florida DATL: BECEIVED IKETTEB Qo filo!NAL QNOTOBIZLO QfVNCLASSIf: IE 0 I'flof'NI Robert ED Uhrig

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P. O. BOX 013100, MIAMI, FL 33101 FLORIDA POWER & -LIGHT-COMPANY March 30, 1977 L-77-100 Mr. Norman C. Moseley, Director Region XX Office of Xnspection and Xnformation U. S. Nuclear Regulatory Commission ~~ R4 197)'m e 230 Peachtree Street, N.N., Suite 1217 0ebg hU~

Atlanta, Georgia 30303

Dear Mr. Moseley:

St. Lucie Unit 1 Docket No. 50-335 Annual Radiological Environmental Monitorin Re ort t

Two copies of the St. Lucie Unit; 1 Annual Radiological Environmental Monitoring Report for the period January 1, to December 31, 1976 are attached. This report is submitted in compliance with Environmental Technical'pecification 5.6.l.b.

Very truly yours, Robert E. Uhrig Vice President REU/GNL/pg Attachment cc: Robert Lowensteiri, Esquire Director, Office of Xnspection and Enforcement (25)

Director, Office of Management Xnformation and Program Control (2)

PEOPLE... SERVING PEOPLE

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