ML20136B640

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Forwards Info Re Storage of Liquid Radwaste in Tank Cars. Responds to R Vollmer 790413 Request Re Transuranic Concentrations in Coolant
ML20136B640
Person / Time
Site: Crane Constellation icon.png
Issue date: 04/13/1979
From: Miraglia F
Office of Nuclear Reactor Regulation
To: Grimes B, Vollmer R
Office of Nuclear Reactor Regulation
References
NUDOCS 7909100062
Download: ML20136B640 (10)


Text

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j UNITED STATRS

,y NUCLEAR REGULATORY COMMISSION g

g wAsumarow, n.c. massa April 13,1979 F

NOTE TO:

B. K. Grimes, NRR, TMI-2 R. H. Vollmer NRR, TMI-2 FROM:

F. J. Miraglia, Jr., Coordinator, Team B is information B. Grimes requested of 5. Bland on April 12,1979. is information R. Vollmer requested of R. Emch on April 13, 1979.

s.( d A F.O.

hia,Jr.

Coordinator Team B i

Attachments:

As Stated cc: see attached distribution list 000100cesy l

O

ATTACHMENT 1 STORAGE OF LIQUID RADWASTE IN TANKCARS l' w

8. Grimes requested on 04/12/79 that we provi.de an isotopie breakdown of the dose rates from a 30,000-gallon railroad.tankcar containing liquid radweste. We had sent him the dose rates on 04/11/79. The.

dose rate at contact was 40 R/hr as calculated by ORNL (D. Bartina).

Grimes also requested that we provide the dose rates for a 10,000-gallon tankcar.

We contacted ORNL but learned that today (04/13/79) is a state holiday in Tennessee and ORNL was not working. Therefore, we calculated the dose rates by hand in order to provide a timely response to the site.

We will follow-up on this on Monday (04/16/79) and contact ORNL again.

We calculated 7 R/hr at one matar from the 30.000-gallon tank and 4 R/hr at one meter from the 10,000-gallon tank.

We were unsure of the dimensions of a 10,000-gallon tankcar; 4 R/hr is for a tank as-sisned to be 10 feet in diameter and 17 feet long.

A tank 8 feet in diameter would give a dose rate of about 3 R/hr at one meter.

The isotopic distribution for the 7 R/hr dose rate is given below:

CONCENTRATION 5 0F DOSE RATE NUCLICE uCi/cc

_DUE TO NUCLIDE I-1 31 100 82 I-133 5

9 Xe-133 4

0.25 C5-134 0.4 0.5 CS-136 0.8 4

CS-137 1.4 3

La-140 1.6 1

This work was done by R. Emch and F. Akstulewicz.

U 4

,j ATTACHMENT 2 RESPONSE TO RE00EST OF R. V0LLMER CONCERNING

?,.j, s.

TRANSURANIC CONCENTRATIONS IN COOLANT _

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yi on Friday afternoon (04/13/79), R. Vollmer requested that we provide infomation to him on transuranic contamination of the primary coolant at PWRs other than TMI-2.

i Turkey Point has reported the following measurements of transuranics in the primary coolant.

Pu-238 5(11.6) x 10-8 uC1/gm Pu-239 and Pu-240 4.3 x 10"I uCi/gm Indian Point 1 and 2 has reported these measurements of transuranics in

-l 1975:

Pu + AM241 + cm242 10~I-10~7 vCi/spu We called Duke Power Company today. Robert Gill informed us that the MDA for gross alpha measurements in the primary coolant at Oconee is 4 x 10-6 uci/cc. Oconee measurements of gross alpha in the primary coolant have always been less than 4 x 10-6 uC1/cc.

l Generic calculations for a straight tube steam generator plant were done during the GESMO study. The calculated uranium concentrations in primary

~ coolant were:

U-235 2 x 10-12 pC1/cc U-237 3.8 x 10-5 pC1/cc i

U-238 2 x 10*II pC1/cc

t.

ATTACHMENT 2 (CONT'D.)

2

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~

r Note that U-237 has a 6.8 day half-life. Thu's. U-237 has a very high

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specific activity.

1 Printouts of calculated primary coolant concentrations for Davis-Besse and GESMO are attached.

We have estimated the concentrations of uranium in water which cor-respond to 10 ppb:

{

4 10 ppb - U-235 2 x 10 uC1/gm 10 ppb - U-237 8 x 10+2 pC1/gm

-I 10 ppb - U-238 3 x 10 pCi/gm l

Without knowing the isotopic content of the uranium, it is impossible to supply better correlations between ppb and uti/gm.

When LAC 8WR had fuel problems in 1976-1977, they measured 6 x 10-5 pCi/gm of gross alpha radioactivity in the primary coolant.

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TE125M 5,8bE 01 1.08E=08 3.79t=1b 7.82E=13 1 57E-TA182 1 15E 02 8.32E=09 1.$1E=15 1.91t=13 5.69t=

W161 1.40E of 3.56E*07 1 25t=13 1 63E=11 a.72t=

>185 7,50E 01 7.8aL=0h 2.61E=11 1.0cEwe9 9.66E=

wn87 9,96t=01

$.85L 03 2.0bE=09 0.00000 0.000 TL207 3.33E=03 6.31E=17 2.21t=23 1 61t=22 1.0ft=

TL208 2.15L=O3 1 91k=13 6,69t=20 7.est=21 1.96E=

TL209 1,53E=03 5.22E=20 1 83E=26 6.17E=25 b.37t=

e pg209 1,37E=01 2.38 E =18, 4,32E=25

2. 81 L a'23 2.84L.

P8210 7.67E 83 8.38t=18,

1.54E=24 0.0 0.0 PS211 2.51E=02 6.80E=17

2.236 23 1.61Em22 1.08t=

P8212 8,82E=01

4. tee =13i 2,10E 19 2.07E920 0.0 P8214 1.86E=02 4.96k=1s 3.73E=20 m.2st=29 a.2sE=

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2. oft =20 5.51Es

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9121a 1.37E=02 1 92E=13 5.S8t=20 a.2sE=20 6.26E.

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,3 91L=19 6.70k=26

'4. sat =25

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6P237 7.92E 08 a.17E*12 3.07E=18 a.62E=16 1.21F*15 MP236 2.10E 00 cfJt.97t ee6 5>, 3.s9E=12 1.09t=13-2.6bt=10-NP239 2.35E 00 1.2sE=03 a.34k=10 3.04E=11 - 3.91E=ce w,

Pu236 1.04E 03 6.50E=12 2.27E=16 3.80E=16 *8.esE=16 PU234 3.2SL 04 4.84E=64 1,71E*1e 4.6ak=12 6.71L=12 EPU 4.91E 06 8 77E=ot 4.2pt=15 9.56E=13 'A.est-12

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4.91L 12 1.53Easo 3.92E=to PU242 1.38E.44 4.55E=11 8.93E=18 1.3bE=15 3.s6E=1b

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1. set =14 1.23E=26 5.02E=15,

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AS 79 e.25t=93 1.92L=o6 4.51E=15 0.0 a.u i

SL 79M 7.71E=u3 2.7bt=0s 9.40E=1b 0.4 9.0 i

O st 79 a.37E o7 1.59t=1s e.86E=1s 7.3eE=14 1,49E=15 84 SON 1.Akt=01 5.13t=07 1.79E=13 9.0 2.31E=17 BN 80 1.22E=d2 d.h3L*0b 9 etE=12 0.9 2.48E=17

'O se sin 4.96t=12 3.476=0s 1.2ta=1s 0.0 0.0 St 81 1.29tav2 1.39E=47 e,50t=14 0.0 0.0 64 82M s.2eE=d3 m.36t=06 2.12E=12 0.0 O0

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