ML20203P551
| ML20203P551 | |
| Person / Time | |
|---|---|
| Site: | 07001359 |
| Issue date: | 02/25/1986 |
| From: | Naschka P IRT CORP. |
| To: | Thomas R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML20203P549 | List: |
| References | |
| NUDOCS 8605070440 | |
| Download: ML20203P551 (11) | |
Text
IRT Corporation 3030 Callan Road. San Diego, Califomia 92121 619/450-4343. Telex. 69-5412 February 25, 1986 h
1,
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Y 1
Mr. Robert Thomas ik b
U. S. NRC Region V Q.
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- 450 Maria Lane 2
Suite 210 9^
Walnut Creek, CA 94596 g
Dear Mr. Thomas:
REFERENCE:
U. S. NRC LICENCE NO. SNM-1405 Enclosed please find the results of a radiation survey taken in the H1GR vault located at our Linac facility,10955 John Jay Hopkins Drive, San Diego, CA 92121.
This vault was surveyed by the methods described below with all the areas well within the " GUIDELINES FOR THE RELEASE OF FACILITIES FOR UNRESTRICTED USE".
The instruments used for the direct survey were an Eberline PAC-ISA with a detector area of 72 sq. cm. and a Ludlum Model 12 ratemeter equipped with a thin window pancake GM with a detector area of 20 sq. cm. The readings have been corrected to 100 sq.cm.
Figure 1 shows the bin numbers and their locations as well as the wipe reference numbers from each bin. Figure 2 shows the locations of the floor and wall area wipes and their wipe reference numbers. Table 1 contains the wipe reference numbers along with the results of the meter survey.
We request that you do a confirmation survey so we can have this facility removed from our license.
If you need any further information or have any questions, please call me at (619) 450-4343. Thank you.
Yours truly,
/ J /. '991 a e S O
Paul R. Maschka Radiation Safety Officer IRT CORPORATION PRM:krl Enclosures Mailing Address P.O. Box 85317 San Diego, CA 92138 8605070440 860416 PDR ADOCK 07001359 C
Ib orporation TABLE 1 METER AND WIPE SURVEY OF HTGR VAULT WIPE SURVEY RESULTS DIRECT SURVEY RESULTS WIPE NO.
BETA-dpm ALPHA-dpm BETA / GAMMA ALPHA 1
<30
<5 BGND BGND 2
<30
<5 3
<30
<5 4
<30
<5 5
<30
<5 6
<30
<5 7
<30
<5 8
<30
<5 9
<30
<5 10
<30
<5 11
<30
<5 12
<30 6.7 l
13
<30 14.1 14
<30 6.7 15
<30 6.7 16
<30
<5 17
<30
<5 18
<30 194.1 19
<30 24.0 20
<30 6.7 21
<30
<5 22
<30 6.7 23
<30 11.7
~
24
<30
<5 25
<30
<5 26
<30
<5 27
<30
<5 28
<30
<5 29
<30
<5 30
<30
<5 31
<30
<5 32
<30 6.7 33
<30
<5 a
34
<30
<5 i
O umn.am uma alus b
I 2.4 16 LawfA Sim LoweAt. Bius
@ t@
@t @
S
_ ll 23 ig.
4 to HTGR t/AULT 22.
16
@ O
@ g 3
9 21 IS' 2
8 20 14
@ e Bin No'."
J O
O y,,, ya,'s O
i FI6uA.E 1. STOAAGE BIN WIPE AREAS ~ l00Cm'
--I
O e
Wira No'.s HTGR %ut.T u
1 n
7 9
fisuAE L Race wint AtrAs-900mz
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U.S. fluclear Regulatory Commission Region V Independent Survey Data AY$
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- IDENTIFICATION TIME PST A PST B BKB A BKG B Ka Kb A H-93 10.00 0
0 0.29 1.64 0.304 0.348 B
0.00 0
0 0.00 0.00 0.000 0.000 C-
.0.s00 0-0.00 0.00 0.000 -- 0.000-l g.
D 10.00R 0
0 0.00 0.00 0.000 0.000
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0.00 0.00 0.000 0.000 e
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TUE HAR 25,1986 Mk.I[ ~
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GROUP A H-93 4
.a
- - -- S M -TIME-CDUNTS-A-COUNTS--B-CPH-A---CPM B A/0000.304 B/0000.348-2 sis A 2 sis B HR: MIN:SEC 8
1 10.00 9
17 -
0.61 0.06 2.01 0.17 66.66%
48.50%
06:52:32
-- 10.00-3 26 0.01-
-0.96 0.03
- 2.76 115.47%
39.22% - 07:02:44 3 10.00 10 4 46 0.71 2.96 2.34 8.51 63.24%
29.48%
07:12:57 4 10.00
- 12
- o 26 0.91 0.96 2.99 2.76 57.73%
39.22%
07:23:09 i
5 -10.00 14. ~
28 h 01 ---1.16 3.12 3.33 - 55.47%
37.79%
07:33:22 6 10.00 3
23 0.01 0.66 0.03 1.90 115.47%
41.70%
07:43:34 7 10.00 14 37 1.11 2.06 3.65 5.92 53.45%
32.88%
07:53:47 i
. 8--10.00
-2 6- -
3 8--2.-31----
2 416-7.60
- 6.21- - 39.22Z-32.44%
08:03:59 9 10.00
$1.9 0.31 0.26 1.02 0.75 81.65%
45.88%
08:14:12 10 10.00
.3-
.12 0.01
-0.44 0.03
-1.26 115.47%
57.73%
08:24:24
~ 1 - 10:00 2
-23
-Or09
-h16
---0.30
- --3.33 --14h43%--- 37;791---08:34:37 12 10.00 3
13 0.01
-0.34 0.03
-0.98 115.47%
55.47%
08:44:49 13 10.00 3
25 0.01 0.86 0.03 2.47 115.47%
40.00%
08:55:02 14 -10;00
-- 4 16-0.11 - - -0.04 - - 0.36
- -0.11 ---100.00% -
50.001'- 09:05:14 15 10.00 8
29 0.51 1.26 1.68 3.62 70.71%
37.14%
09:15:27 16 16.00 7
14 0.41
-0.24 1.35
-0.69 75.59%
53.45%
09:25:39 17---10.00 2
1-5 0.09
-0.14- - ---0. 3 0 - -
--0 40 - 1414431-- 51.64% - 09:35:52-I.
18 10.00 1
12
-0.19
-0.44
-0.63
-1.26 200.00%
57.73%
09:46:04 19 10.00 6
19 0.31 0.26 1.02 0.75 81.65%
45.88%
09:56:17
" -10.00 20-~0 19 -- - - 0.36 --
-0.63
h03----200.00%-- - 4 4;72%---10:06:29 21 10.00 4
10 0.11
-0.64 0.36
-1.84 100.00%
63.24%
10:16:42 22 10.00 4-16 0.11
-0.04 0.36
-0.11 100.00%
50.00%
10:26:54 N
23--10.00--
3 1
0:01
-0454 -
0;03 - ----1755 - 115:47% - - 60.30% -- 10:37:07-24 10.00 3
12 0.01
-0.44 0.03
-1.26 115.47%
57.73%
10:47:19 25 10.00 9
31 0.61 1.46 2.01 4.20 46.66%
35.92%
10:57:32 l
26--10.00 - - -138 69 t-3251
--5.26 -
-44.44- - - 15.11- - -17.02% - 24.07% - 11:07:44 1
27 10.00 17 62 1.41 4.56 4.64 13.10 48.50%
25.40%
11:17:57
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28 10.00 22 75 1.91 5.86 6.28 16.84 42.64%
23.09%
11:28:09 29--10.00 --- 32-
-1 v51 - -- 5 6 -
4.97 --- - 4.48 -- 47.141-35.35% -11:38:22 30 10.00 19 41 1.61 2.46 5.30 7.07 45.88%
31.23% - 11:48:34 31 10.00 17 43 1.41 2.66 4.64 7.64 48.50%
30.501 11:58:47 32-10.00 --- 40
--0. 51 =
2.36
- 1.68 - -- - 6.78 - -70.71%
31.62%-
12:09:00 f
1 33 10.00 5-32 0.21 1.56 0.69 4.48-89.45%
35.351 12:19:12
2-51NULt UTCLE 3-SINGLE CYCLE AND RESTACK
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4-HULTI-CYCLE
-UHICH MODE DO YOU-WANT-(1.2i3 OR 4)f 3
~
B0 YOU UANT TO AYERAGE (Y/N)? H GROUP A PLEASE ENTER-SAMPLE-IDENTIFICATION-(UP TO 12 CHARACTERS)
GA M-93 3
ENTER-TIME PS(XXXXX-XX-MINr) 1000 ENTER-A PS(CNTS)~
O s
ENTER B PS(CNTS) 0
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-ENTER BKG-A(XXXXXTXX-CPM)
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ENTER BKG B(XXXXXrXX-CP'H) 1
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l ENTER-Ka(XXXXvXXX-)
1000 f
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---ENTER Xb(XXXX;XXX)
- - - - - - - -l- - - -- - -
1000
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ARE ALL THE GROUP INPUTS CORRECT (Y/N)? Y i
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BO-YOU, UANT-TO DEFINE-ANOTHER-GROUP.-(Y/N)? -N -
[
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-- E IDENTIFICATION---TIME-PST-A ---PST-B'-
BKG A BKG B -
Ka Kb A GA H-93 10.00 0
0 0.00 0.00 1.000 1.000 B
0.00 0
0 0.00 0.00 0.000 0.000 C-- - -
0100 0-0 0.00 0.00 --- 05000 0.000 --
!g D
0.00 0
0 0.00 0.00 0.000 0.000 I
N:
E 0.00 0
0 0.00 0.00 0.000 0.000 f
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......TUE HAR -25;1986-GROUP A GA M-93 f-SN TIME COUNTS A COUNTS B CPM A CPN B A/0001.000 B/0001.000 2sig A 2sig B HR:HIN:SEC 40so.3d 4.2 0.S*f 1 10.00 15847 3957 1584.70 395.70 1584.70 395.70 1.50%
3.17%
06:09:19 PU-2395220DPH lF 2 10.00 189 113435.,
18.90 11343.50 18.90 11343.50 14.54%
0.59%
06:19:34TC-99 3.26E4DPM
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