ML19309E517

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Environ Radiation Surveillance Rept for Oct 1978-Mar 1979
ML19309E517
Person / Time
Site: North Carolina State University
Issue date: 03/13/1980
From: Ball A, Debnam J
North Carolina State University, RALEIGH, NC
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ML19309E516 List:
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NUDOCS 8004220560
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O EINIRO: MENTAL RADIATION SURVEILLANCE REPORT FOR THE PERIOD OCTOBER 1,1978 M MARCH 31, 1979 Arthur C. Ball, Envirotnental Health Physicist Joshua Debnam, Envirotnental Chemist ct Radiation Protection Council L. T. Caruthers, Radiation Protection Officer D. W. Morgan, Associate Radiation Protection Officer Uorth Carolina State University Raleigh, North Carolina j

i i

eo04220 mta[ h O j

I 1.

INTRODUCTION Environmental radioactivity in the vicinity of North Carolina State University has been markedly low throughout the current reporting period. No increases have been detected subsequent to low level releases reported by nuclear power plants in other states or from any other sources.

Contracted analysis has been performed on Thermoluminescent Dosimeters but not on other samples. This analysis provides the only readings for the TLD stations for January and February 1979 as the reader used for local evaluation was not operational.

[

2.

AIR HONITORING I

No significant alpha or halogen activity was detected in any air samples taken during this reporting period. Gross beta activity is reported in Table 2.2 and specific activities for gamma emitters is reported in Table 2.3.

3.

MILK l

No iodine activity was detected in any milk samples analyzed during this period. Strontium-90 activity is reported in Table 3.1.

The reading for December 10 higher than normel, but is still well within safety limits. No attributable cause is knoun for the abnormal December reading.

1 4.

SURFACE WAllut Gross alpha and beta and Strontium-90 activities are reported in Table 4.1 along with gamma emitters Cesium-137 and Potassium-40 (which were detected in only a feu of the twelve sampics reported).

5.

SOIL Grons alpha and beta and specific 3cesa emitter activities are reported for the various soil semples in Tablo 5.1.

6.

VEGETATION Specific activities for corn, soy beans, and pine needles are reported in Table 6.1.

7.

REACTCR UASTE TAUKS AND SEUAGE Gross alpha and beta activitico for the PULSTAR reactor unste tanks and for Raleigh seunge water are reported in Table 7.1.

Strontium-90 activity is also reported for the sewage samples.

8.

THERM 0 LUMINESCENT DOSD!ETERS (TLDs)

TLD average neckly exposure readings are reported in Table 8.2.

Local evaluations uore not performed during January and February of 1979 due to the non-operational status of the TLD reader. Repairs have now been comploced and local evaluation of TLDs resumed in March 1979.

l l

l r

I Table 2.1 Air Particle Sampling Locations Designation Direction Distance Elevation Broughton Southwest 410 ft.

- 55 ft.

David Clark Lab (DCL)

West Library Northwest 629 ft.

+ 36 ft.

Riddick Coutheast 325 ft.

46 ft.

i Hithers

!Tortheast 270 ft.

- 19 ft.

Direction - Direction from Reactor Stack 2Distance - Distance fran Reactor Stack 3Elevation - Elevation with respect to top of Reactor Stack Table 2.2 Airborne Gross Beta Activity (fCi/M *1o)

Date Broughton DCL Library Riddich Withers 1970 10/2-10/6 69.1 i 6.1 59.2 = 5.6 49.3

  • 5.2 50.7
  • 5.2 66.4
  • 5.9 10/9-10/13 42.3
  • 4.9 39.7 i 4.0 43.7 5.0 52.2 = 5.3 33.1
  • 4.5 10/16-10/20 46.5 2 5.0 41.0
  • 4.0 42.8
  • 4.9 39.7
  • 4.7 40.1 i 4.7 10/23-10/27 42.1
  • 4.0 45.4 i 5.0 41.7
  • 4.0 40.1
  • 4.7 39.7
  • 4.7 10/30-11/3 60.3 5.7 62.5
  • 5.8 55.5 5.4 56.0 5.5 58.3 5.6 11/6-11/10 74.6 6.3 07.9
  • 6.9 53.3
  • 5.3 66.9 i 5.9 76.0
  • 6.4 11/13-11/17 43.6 i 4.0 40.1
  • 4.7 46.3 i 5.0 10.1 2 3.4 67.3 5.9 11/20-11/24 77.9 = 6.5 55.9 6 5.5 60.4
  • 6.1 63.4
  • 5.0 93.3 7.3 11/27-12/1 34.9
  • 4.4 33.0 4.3 21.3
  • 3.4 29.4 = 4.1 30.7 = 4.2 12/4-12/C 29.8 4.2 34.6 4.2 20.7 4.1 19.5 3.7 35.7 4.4 12/11-12/15 19.'O
  • 3.6 34.9
  • 4.3 37.3
  • 4.4 30.8 = 4.5 47.1
  • 4.9 12/10-12/22 31.1
  • 4.4 46.5 i 5.1 37.1
  • 4.7 76.0
  • 6.5 35.1 4.6 12/25-12/29 70.1 i 6.2 83.7 6.0 81.1
  • 6.7 66.4
  • 6.0 75.6 = 6.3 1979 1/1-1/5 45.4 i 5.0 44.3
  • 4.9 42.5
  • 4.0 43.4 i 4.9 42.3
  • 4.0 1/8-1/12 46.3 i 4.0 60.5
  • 5.5 51.0
  • 5.1 47.4
  • 4.9 56.6
  • 5.3 1/15-1/19 47.0 i 5.1 54.6
  • 5.2 40.9
  • 5.1 52.4 5.3 53.0 i 5.3 1/22-1/26 27.6
  • 4.1 23.5
  • 3.9 29.0
  • 4.2 40.4
  • 4.6 38.6 i 4.6 1/29-2/2 25.7 i 4.1 39.7 i 4.7 37.5 = 4.6 36.0
  • 4.5 31.8
  • 4.3 2/5-2/9 30.5 s 4.2 59.2 6 5.1 43.9 i 4.0 41.4
  • 4.7 46.2 i 5.0 2/12-2/16 67.5 i 5.9 55.3
  • 5.9 50.9 i 5.2 27.9 = 4.1 53.7 5.3 2/19-2/23 10.7 i 3.4 20.1 = 4.2 39.3
  • 4.6 32.9
  • 4.4 36.2
  • 4.5 2/26-3/2 11.0 i 3.5 20.2 i 3.0 32.7
  • 4.4 29.0 = 4.2 32.9 = 4.4 3/5-3/9 10.2
  • 3.7 49.3
  • 5.0 39.7
  • 4.6 44.3
  • 4.0 46.3 = 4.9 3/12-3/16 10.0 i 3.7 52.4
  • 5.2 45.0 i 4.9 26.1 i 4.0 41.9
  • 4.7 3/19-3/23 33.5
  • 4.5 32.9
  • 4.4 34.2
  • 4.5 21.9
  • 4.0 32.9 i 4.4 3/26-3/30 55.5 = 5.4 59.4 = 5.6 50.2
  • 5.2 41.0 = 4.7 45.4 2 4.9 L

a

3 Table 2.3 Airborne Particulate Specific Activity (Y maitters)

(Campus Average fCi/}!3

  • 1 3) hee Ce Ce Ru Ru 95,

95 100 101 103 6

g Nb 1978 10/2-10/6 6.8

  • 1.4

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 10/9-10/13 8.3

  • 1.6

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 10/16-10/20

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 10/23-10/27 6.5

  • 1.7 0.9
  • 0,3

< 0.5

< 5.0

< 1.0

< 0.5 10/30-11/3 5.1 t 1.4

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 f

11/6-11/10

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 11/13-11/17 13.6

  • 3.3

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 11/20-11/24

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 11/27-12/1

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 12/4-12/8 9.0 2.4

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 l

12/11-12/15 7.9

  • 2.2

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 i

1 12/18-12/22

< 5.0 3.6

  • 1.0

< 0.5

< 5.0

< 1.0

< 0.5 12/25-12/29 10.6

  • 2.8 12.9
  • 0.9 6.4 0.5

< 5.0

< 1.0

< 0.5 1979 1/1-1/5

< 5.0 4.1

  • 0. 7 1.7 i 0.4

< 5.0

< 1.0

< 0.5 1/8-1/12

< 5.0

< 1.0 1.8 0.4

< 5.0

< 1.0

< 0.5 1/15-1/19 9.4

  • 2.2

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 1/22-1/26

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 1/29-2/2

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 2/5-2/9 7.6

  • 1.8

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 2/12-2/16 10.5

  • 2.8

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5

[

2/19-2/23 6.7 2.7

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 2/26-3/2

< 5.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 3/5-3/9 5.9 i 2.0

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 3/12-3/16

17. 9
  • 3.2

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 3/19-3/23 9.6

  • 2.6

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 3/26-3/30 8.9

  • 2.1

< 1.0

< 0.5

< 5.0

< 1.0

< 0.5 I

i L

t

4 Table 3.1 Milk Specific Activity (pci/1

  • 1 c)

Date 90,,

1317 10/78 3.28

  • 0.43

< 2.0 11/78 3.69

  • 0.59

< 2.0 12/70 10.45

  • 0.62

< 2.0 1/79 3.93

  • 0.48

< 2.0 2/79 2.43

  • 0.51

< 2.0 3/79 2.93

  • 0.37

< 2.0 Table 4.1 Surface Water Specific Activity (pci/1

  • 1 o )

37 40 90 Date Location

  • Cs g

Sr Gross Alpha Gross Beta 1978 Oct ON

< 0.1

< 2.0 0.22

  • 0.02 0.23
  • 0.07 2.8(
  • 0.35 0FF

< 0.1

< 2.0 0.23

  • 0.02 0.20
  • 0.07 4.44
  • 0.42 Nov ON

< 0.1

< 2.0 0.05

  • 0.02 0.20
  • 0.08 4.69
  • 0.41 0FF

< 0.1

< 2.0 0.09

  • 0.02 0.16 0.06 5.38
  • 0.44 Dec ON

< 0.1

< 2.0 0.37

  • 0.03 0.44
  • 0.09 6.21
  • 0.49 CFF

< 0.1

< 2.0 0.38

  • 0.03 0.23
  • 0.07 5.19 i 0.44 1979 Jan CU

< 0.1

< 2.0 0.36

  • 0.03 0.36 0.09 4.03
  • 0.38 0FF 0.25
  • 0.71 39.59242.05 0.33
  • 0.03 0.30
  • 0.08 8.33
  • 0.59 Feb OU 0.33
  • 0.71 10.29i41.95 0.31 0.03 1.02
  • 0.14 7.95
  • 0.57 0FF 0.33
  • 0.71 < 2.0 0.02
  • 0.06 0.43
  • 0.09 7.73
  • 0.56 Mar OU

< 0.1

< 2.0 0.'30 i 0.03 0FF

< 0.1

< 2.0 0.'O

  • 0.03
  • ON - Denotes Rocky Branch Crock no it c.tcrn UCSU Ccepuc 0FF - Denotes Rocky Branch Crock as it larvoo UCSU Campus Table 5.1 Soil Opeaifte s.ccivity (pci/;p
  • i c )

~'S 137 40 928

" Th Rn Cs K

Location

  • Grcr.c c-Or.a.a::

Uorth 1.1160..'.3 10.3?*i.70 0.373. '> 5 0.91*0.36 4.43=0.36 < 0.4 South 1.07:0.36 0.75 1.45 0.45iC.41 0.04:0.41 4.05:0,30 < 0.4 Enot 1.33in.37 I?. 36it.43 1.32:0.01 1.20=0.47 2.99=0.36 < 0.4 Ucot

2. 3060. T.

t 9 9."i2. 37.

' 6323.3.'

t.2500.45 3.20=0.36 42.09t17.96 U (4.5')

1.62=0.30 12.5^ ^.07 a.53:.0.32

1. 11:0,21 0.19i0.15 19.73=9.63 OEG(4.5') 2.27dO.43 G.2."*2.35 2.30:0.'4 0.31i0.35 0.26*0.22 40.09413.89 i

MEG (4.5')

4.80:0.79 10.07.*2.3^.

9 a2i0..;3 4.40i0.45 0.39 0.25 19.49*15.66

  • Location - Donocen directica frrs recctor Eurial ground nr.=cles cro in none pro.:im!.ty to fonco UEG denotec Umr Surici Grou
  • 02G denote: Old Duric1 Crcund (Uot precenti;- in mo) 4.5' denoton depth of cenpin. Othern cro er,vri.co

Table 6.1 Vegetation Specific Activity (pci/gn

  • 1 a) 5 o

Sample Cross Alpha Cross Beta Cs g

Corn

< 0.01 3.20 i '.18 0.051

  • 0.044 7.07
  • 2.70 Soy Beans 0.15
  • 0.03 14.81 i.79 0.109
  • 0.028 53.76
  • 3.20 Reactor Pine 0.05
  • 0.03 2.07
  • U.23 0.012
  • 0.057 4.05
  • 3.71 South Pine 0.09
  • 0.03 2.49
  • 0.22 0.083
  • 0.061 9.03
  • 3.76 Table 7.1 Tank and Sewego Specific Activity (pci/1
  • 1 o )

Sample Cross Alpha Cross Beta 90,

3 UT #2 Oct

<05 3267

  • 175 WT #3 Oct

< 0. 5 3376

  • 180 UT #1 Nov

< 0.5 613

  • 42 IE #3 Nov

< 0.5 371

  • 30 1R #1 De'c

< 0.5 211

  • 22 WT #3 Dec

< 0.5 349

  • 29 UT #1 Jan

< 0.5 523

  • 37 UT #3 Jan

< 0.5 497

  • 36 UT #1 Feb

< 0.5 704 47 UT #3 Feb

< 0.5 330 i 20 UT #2 Mar

< 0.5 060

  • 54 UT #3 Mar

< 0.5 1191

  • 71 Oct Sewage 0.20
  • 0.14 11.55
  • 1.03 1.53 0.41 De e S etm g o

< 0.1 9.55 = 0.05 1.33 i 0.41 Feb Seunge

< 0.1

[7 Ai J.13 CL 0.56

  • 0.22

6 Table 8.1 Thermoluminescent Dosimeter (TLD) Locations Designation Location Broughton 410 ft. southwest of and 55 f t. below top of Reactor Stack DCL Roof of David Clark Laboratorica Library 629 ft, northucot of and 36 ft. above top of Reactor Stack Riddick 325 ft. southeast of and 46 ft below top of Reactor Stack Withers 270 ft. northeast of and 19 ft. belou top of Reactor Stack Control Room 214 Da' rid Clark Labe R-3 Entrance to NCSUR.3 Reactor Bay from Control Room PULSTAR PULSTAR Reactor Bay, West Wall Equipment Room PULSTAR Equipment Room East of PULSTAR Bay Control Room PULSTAR Control Room Pool Over PULSIAR Reactor Pool Stack Top of PULSIAR Reactor Stack Tabic 8.2 Thermoluminescent Dosimeter Readings (Average mR/wk based on Co-60 Standard)

Area Monitors 10/78 11/78 12/78 1/79 2/79 3/79 Broughton L

3.2 3.8 3.7 X

X 3.7 Broughton C

0.7 2.8 2.0 2.0 1.8 1.8 DCL L

2.3 3.1 2.4 X

2.8 DCL C

< 0.1 2.2 1.5 1.3 1.0 0.7 Library L

3.2 3.8 3.6 X

3.6 Library C

0.5 2.9 2.0 1.9 1.8 1.8 Riddich L

3.4 3.0 3.9 X

X 4.2 Riddich C

1.0 3.0 2.2 2.0 2.0 2.6 Withers L

3.0 3.0 3.0 X

X 3.0 Uithers C

0.4 2.7 1.4 1.6 1.3 1.8 Control L

3.0 3.0 1.3 X

X 2.8 Control C

0.3 2.3 2.0 1.4 1.8 1.4 Recctor Monitors R-3 L

6.0 5.9 6.4 X

X 6.0 R-3 C

6.3 3.6 3.4 3.1 2.9 3.1 PULSTAR L

97.4 87.0 14.5 X

X 53.8 PULSIAR C

13.3 12.2-0.3 8.3

'11.4 26.8 Equipment Roco L

30.0 19.9 27.9 X

X 32.3 Equipment Roca C

23.0 17.7 18.3 21.4 21.3 24.2 l

Control Room L

10.2 9.6 6.0 X

X G.6 Control Room C

3.0 4.0 3.5 3.4 3.8 3.7 l

Pool L

50.G 47.9 40.0 X

X 40.9 Pool C

32.0 30.1 23.3 30.2 28.6 21.2 S tach L

2.3 3.3 4.0 X

X 4.9 Stach C

0.2 2.5 1.6 1.7 1.5 2.2

  • L Denotes Locally Evaluated LiF Dosimeters C - Denotes CaSO :Dy Dosimeters Contracted to Telodyno Isotopes for analysis 4

X - TLD Reader used for local evaluations vus not operational and in repair l

status for Janunry and February 1979 r

- - - -

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