Text

Responses to Round 2 Questions Supplied by Hudson River Fishermans Assoc on 710222
	ML20090B837
Person / Time
Site:	Indian Point
Issue date:	03/02/1971
From:	; CONSOLIDATED EDISON CO. OF NEW YORK, INC.
To:	;
Shared Package
ML20090B834	List: ML20090B830; ML20090B837;
References
	NUDOCS 8301280393
	Download: ML20090B837 (18)
	v • d • e

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9 CONSOLIDATED EDISON COMPANY 0F NEW YORK, INC.

RESPONSES TO ROUND TWO QUESTIO!!S SUPPLIED BY THE HUDSON RIVER FISHERMAN'S ASSOCIATION ON FEBRUARY 22, 1971 t

1 MARCH 2, 1971 a

DATED:

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Quention No. 1 Question: (a) llave any tests for radiological content or i effects been made on fish taken, dead or alive, from the intake screens at Indian

, Point Unit No. l? ,

'(b) If such tests have been made, produce all reports, analyses and conclusions derived therefrom.

Answer: (a) Yes.

(b) Analyses of fish taken from the intake screens at Indian Point Unit No. 1 have been performed; 4 These f by New York University during 1970.

s

't analyses consisted of gamma ray spectroscopy of an aliquot of an ashed blend of collected fish. While the preliminary results are shown u-in Table 1, attached, no reports analyzing the j results of these tests have been officially ,

i received. An analysis of the results is shown l on Table 2, which includes conversion of the i

Table 1 data to dose rates, and a comparison j 1

with natural background radiation. t I

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Question No. 1 A communication was received by Con Edison (Cont'd) with respect to Test No. 4. It is attached to this answer.

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TABLE 1 . ,

j PRELIMINARY RESULTS OF RADIOLOGICAL - -

ANALYSES OF FISH SAMPLES -' .

INDIAN POINT - 1970 (pc/Kg Wet)

Collected Species Date By K-40 Mn-54 Co-50 Co-58 Cs-134 Cs-137 % ASH # Fish-

l) Tom Cod 1/13/70 Raytheon 1478 12 6.4 -8 7.0 15.7- 3.09 ~E0 ~4 (Screens) 36 i3

1.5 4 1.7 1 1.7 l2) Striped 1/13/70 Raytheon 1680 14.8 4.5 -10.1 6.8 29.9 3.67 ~ 122 Bass 47 i 4.4 i 2.1 5.8 2.3 2.3 -

(Screens)

3) Phite 1/13/70 Raytheon 1474 2.6 -2.1 -3.9 7.9 52.6 4.64 21 F Perch 40 1 4.7 2.3 6.3 2.5 i 2.6 (Screens)

.4 ) White 3/10/70 Dr. Lauer 1477 9.9 0.5 -17.0 10.5 37.8 Perch 4.48 30 W 52 5.5 2.7 9.7 t 2. 9' 3.0 (From Tinbkill) 5 ) '3hite 6/03/70 Raytheon 486 2320 3266 3446 310.5 578.5 Perch 5.76 16 C-217 52 21 i 190 15.7 15.8 (Screens)

Jgg

6) Phite 6/09/70 Raytheon 737

, Perch 62

-2.4 7.6 3.9 3.3 27.3 15.8 f.23.7 12.9 5.74 10 ?

3.6

(Canal)

7) White 6/15/70 Raytheon 561 117 30.4 92.7 35.8 93.7 5.33 8 W-Perch 67 i 12.7 3.8 69.4 i 4.7 4.4 (Canal) g) White 6/15/70 Raytheon 380 110.7 36.3 298 75.5 Perch 122.0 4.59 13 W 65 11.1 4.2 32 4.7 4.6 (Canal)

KEY - W=Whole Fish -

F= Fillets Only -

G= Gutted Fish t

- - mu,,aw .- -

---,*%*-a,sy. _

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1 TABLE 2 Dose Rate to Fish From Radionuclides From Natural Done Indian Point ** to Fish

. 36 mrads/yr.*

Maximum 28 mrads/yr.

~

Minimum 0.09 mrad's/yr.

Mean 4.0 mrads/yr.

I

28 from cosmic rays; 8 from internal K-40

- Based on Table 1 data.

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NEW YORK UNIVERSITY MEDICAL CENTER I{

institute of Environmental Medicine

550 FIR $f AVENUI, NEW YORK, N.Y.10016 AREA 212 679 3200 ANTHONY l. LANZA RESEARCH L A80RAToRif 5 AT UNIVER$1TY VALLEY tong M1 ADOW ROAD, STERilNG f oREST, TUXf DO, N.Y.

Mall AND TIttPHoNE ADDRESS: 550 FIRST AV[NUE, NEW YORK. N.Y.10016 May 19, 1970 Mr. George Cowherd Consolidated Edison Company 4 Irving Place flew York, New York 10003

Dear Mr. Cowherd:

J As you requested during our recent telephone conver-sation, I have analyzed a sample of fish collected at .

Indian Point during the period 3/8/70 to 3W11/70 for gamma-emitting radionuclides. The only radionuclides detected in this sample were Cesium-137 and Potassium-40, the latter which occurs naturally in nature. The activities found in the sample were:

Cs-137: 59.6 picoCuries/Kg Live Wght.

K-40 : 1572 pico Curies /Kg Live Wght. .

~

The gamma spectra of the sample is included as verification.

To facilitate evaluation of the Cs-137 activity contained in this sample, the following activities of this nuclide have l

been found in Hudson River fish on other dates and other locations:

LOCATION DATE pC: 137Cs/Kg Live Wght.

Annual Average (Indian Pt.-Esopus#) 1964 36 1965 41 i

1966 29 1967 20 1968 31 Indian Point May 1969 -

42 June 1969 61 l July 1969 61 August 1969 48 l September 1969 59 l Esopus# May 1969 27 June 1969 24 July 1969 21 August 1969 30

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2 - continued In view of these results, the concentration of Cs-137 in the fish sample of 3/8/70 to 3/11/70 appears to be quite typical of values found in fish from this area of the river. The low-level aqueous discharges at Indian Point do account,,however, for the two to '

three-fold elevation of Cs-137 in fish from the vicinity of Indian Point, as compared to upstream locations.

It is unlikely that " dangerously" high levels of pure beta-emitting radionuclides , e. g. , Sr-90 and Tritium were present in these fish since the low Cs-137 levels which were measured imply an overall, low reactor-discharge of all radionuclides.

Sincerely, ,

sk w3 f k5 A~-

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Jack W. Lentsch JWL:bl .

Encl. . ,

J

Esopus lies 40 miles north of Indian Point.

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Question No. 2 Question: Describe in detail the timing of radiological waste discharges into the Hudson River, i.e.,

is waste discharged' constantly or in batches:

if in batches, how often and in what quantities?

Answer: Padiological wastes are processed on a batch basis within the plant, before discharge to the Hudson River from Indian Point Unit No. 1. The Indian Point Unit No. 2 radwaste s,vstem will also process radiological wastes on a batch basis within the plant before discharge. Por both the present Indian Point Unit No. 1 and proposed Indian Point Unit No. 2 operation, liquid wastes are discharged continuously in a controlled manner after processing, and are monitored to assure compliance with allowable discharge limits.

During operation of Indian, Point Unit No. 1 the radwaste system processes a batch quantity of 2255 gallons approximately 5 times a day.

During operation of Indian Point Unit No. 2 the

'radwaste system is designed to process a batch quantity of 1000 gallons approximately twice a day.

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I Question No. 3 Question: (a) Are there any reports of radiological tests on fish made to the A1:C before -

t August 1, 1968?

,( b) If not, why were tests on fish not made until that time?

(c) If not, why were tests on fish added at that time? -

Answer: Yes, radiological tests were made on fish before August 1, 1968 and were reported in the semi-i:

annual surveys of environmental radioactivity ;

in the vacinity of the Tndian Point Station. j.

A summary of the results of such tests for the period from 1960 to 1969 is,shown on the attached chart.

. The reasons for discontinuing these tests in 1966, and for resuming them in 1969 are presented in the semi-annual reports entitled " Survey of Environmental Radioactivity in the Vicinity of Indian Point Station" filed in Docket 50-3.

Essentially, radioecological fish samplinF as I

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_.- _. _ __ _ - _ _ _ _ _ _ _ _ . - _ _ . - _ - - _ _ . _. a

9 9 ~

Question No. 3 -

(Cont'd) part of the monitoring program was discontinued

'in 1966 because there had been essentially no-change in the average value of data obtained i.

over the first five years and the monitoring

, Program was modified to achieve more meaningful

. data. Fish sampling was resumed in 1969 when the monitoring program was-expanded in antici-Pation of the forthcoming addition of Units '

2 and 3. -

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Question No. 4 Question: On Page 4 of " Manmade Radionuclides in the Hudson River Estuary", it is stated that the M.P.C. of water into which Indian Point Unit No. 1 discharges was changed. Describe the 1 analyses, findings and conclusions which led to this change in M.P.C.

J Answer: The "MPC" has never been changed. The me't hod 1, for computing the fractional portion of MPC depends upon the state of knowledge of the identities and concentrations of the radioactive h

constituents of the waste.

j a

The M.P.C. for all discharges from Indian Point has always been that allowed by 10CFR20. The change referred to is as permitted within 10CFR20.

Appendix B, Table II, notes 2 through 5, therein specify an allowable limit for liquid discharge concentration for an unknown mix of radionuclides.

This method was used for Indian Point discharges from 1962 to 1966. In 1966, procedures at Indian a

s

_ e w

O O

. Quention No. 4 (Cont'd)

Point for release of radioactivity, were changed to include radiochemical analysis of radioactive wastes to determine isotopic content. With a i knowledge of isotopic content, the computation

,of MPC as specified for each isotope according

.to'10CFR20 Appendix B, Table II, became applicable.

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O O

. Question No. 5 Question: Describe procedure by which fish were chosen

,' for radiological anaiysis on which reports [

u i

to the AEC were based.

Answer: Fish were collected by shore seining, gill nets, trawling, and at times from the screens, and were chosen so as to include a variety of l species.

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O O Ouestion No. G Question: " Manmade Radionuclides in the Hudson River Estuary" states that in 1969 channes in radio-lorical matter in plants can be related to chances in radioloFical matter in fish. In its report

' covering February 1, 1969 to July 31, 1969, con Edison found no identifiable radiological L isotopes in fish tested. Explain the differences i in tests made which appear to lead to different results and relate the results of ETie two studies.

Answer: There are no inconsistent results between the ,

I h

New York University research program and Con ~ !

l Edison's environmental monitoring program.

There are differences, however, in the measure-ment sensitivities used by the two groups.

l The New York University research prof, ram requires the use of ultrasensitive techniques which go li far beyond the requirements of an environmental j monitoring program (for the nuclides analyzed in water samples the sensitivity of the New York University pro' gram is "% of MPC; 1

the sensitivity of the Con Edison monitoring program is 1% of MPC).

i

.? I a

h

O O i Quorntion tito. 6 (Cont *F1) -

4 1

The report " Manmade Radionuclides in the Hudson River Estuary" does not draw a general conclusion '

that changes in radiological matter in plants I

can be related to changes in radiological matter i in fish. The report does state that such a i

relationship exists for Mn-54. _,

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Dear Mr. Cowherd:

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