ML20126A534
| ML20126A534 | |
| Person / Time | |
|---|---|
| Site: | 07001703 |
| Issue date: | 05/08/1985 |
| From: | EASTMAN KODAK CO. |
| To: | |
| Shared Package | |
| ML20126A529 | List: |
| References | |
| NUDOCS 8506130379 | |
| Download: ML20126A534 (5) | |
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APPLICATION FOR A SPECIFIC LICENSE FOR THE POSSESSION OF SPECIAL NUCLEAR MATERIAL Eastman Kodak Company Research Laboratories Rochester, New York March 31, 1981 Revised January 21, 1982 Revised April 7, 1982 Revised December 17, 1984 Revised May 8, 1985 8506130379 B50509 PDR ADOCK 07001703 C
pg
neutron activation and radietracer areas including the radiation cavity.is carried out by the Radiation Safety Supervisor.
His/
her findings are reported monthly to the Secretary of the Eastman
. Kodak Radiation Protection Committee with copies of the report to the Labor & tory Head, the Division Director, and the respective area physician in the Kodak Park Medical Department.
Any whole body exposure beyond 100 mR per month will require immediate investigation by the Laboratory Head responsible for the area and by the Radiation Safety Supervisor to determine the possible source and to prevent further exposures beyond this level.
The following procedures are used to monitor personnel radiation exposure.
1.
Each neutron activation worker is required to wear at all times a film badge for x, S,T, n and n which is changed g
t and processed monthly.
A statistical summary of film badge g
monitoring for recent years, as reported to the NRC, is in the q
demonstration section A4.0.
2.
Each neutron activation worker is required to wear at all times a T-dosimeter.
These are read and the readings f{
recorded each week and reported monthly.
1 3.
Each person working in the area is required to make a daily check with a radiation monitor for hand, foot, and clothing contamination.
If monitoring indicates contamination, the individual cannot leave the lab area unless cleared by the Radiation Safety Supervisor.
The monitoring of radiation exposure of personnel who occasionally enter the radiation cavity for work such as mainte-
~
nance or to assist in setting up radiographic experiments will be carried out by an authorized person.
Such persons will be required to wear, while in the area, a T-dosimeter dosimeter.
The dosimeter will be read and the reading recorded before the person enters the cavity and when he/she leaves the area.
5.2.8 Criticality Monitoring - Exemption from criticality monitoring (10 CFR Part. 70.24) is hereby requested, f?
based on the supporting documentation in the Appendix.
This information indicates that there are no reasonable, accidental events which could. result in criticality.
5.2.9 Calibration - Portable meters are calibrated every 6 months by persons who have an agreement state license n
that authorizes calibrations of health physics instruments; area N
monitors are calibrated annually.
2L 5.3 Administrative Controls -
1.
The CEX control keys must be locked in a Limited Accors-Drawer in the control room when the CFX is not in operation.
The A3.0 Table I Performance and Design Characteristics of CFX 252Cf Source 3 mg 35U Loading 1582.62 grams Uranium Enrichment 93.4%
Fuel' Form Aluminum-Clad Alloy Plates (MTR Type) ff Moderator Polyethylene Maximum k,ff 0.990 235 k,ff Increase for 20-gram U sample 0.004 Control Poison Cadmium, Aluminum Clad Shutdown k,ff 0.773 Fission Power Level 11.4 Watts 4
l -
A3.0 (C:ntinuid)
Table II l
CFX GAMMA AND NEUTRON INTENSITIES May, 1985 Fast Thermal Gamma Neutron Neutron Item Intensity Intensity Intensity Total No, Measurement Location (mR/h)
(mrem /h)
(mrem /h)
(mrem /h) 1 Accelerator Table 1.0 2.3 0.3 3.6 2
Cooling Unit for Accelerator 0.6 1.2
<0.1 1.8 3
10 ft..from Radiographic Port 1.1 3.0 0.4
.4.5
.4 5 ft. from Radiographic Port 2.0 5.8 0.5 8.3 5
Top of Paraffin Block @ 3 ft.
5.0 12.6 0.8 18.4-from Radiographic Port 6
Top of Paraffin Block @ 1 ft.
12.5 20.2 1.3 34 from Radiographic Port
-7 Top of CFX, front edge, above 6.0 25.3 1.5 32.8
-Radiographic Port 8
Right side of CFX @ 1 ft.
1.6 5.6 0.7 7.9
-from CFX panels 9 -Right side of CFX @ 3 ft.
2.5 6.8 0.5 9.8 from CFX panels 10 _Left side of CFX @ 1 ft.
3.5 10.1 0.8 14.4 from CFX panels 11' Left side of CFX @ 3 ft.
3.5 8.3 0.3 12.1 O
from CFX panels il t 12
. Cavity Entrance 1.1 1.8 0.3 3.2 13 Sump Pumps 0.2 0.9
<0.1 1.1 14 Labyrinth Entrance (Gate)
<0.1
<0.1
<0.1
<0.1 15 Control Room
<0.1
<0.1
<0.1
<0.1 NOTES:
-1)
The activity of the Cf-252 source on this date was one Curie.
- 2) The CFX was at full power during the measurements.
- 3) Reference Industrial Hygiene Report #85153.
4) At the present time, a rope barrier is in place (Figure 6), which reduces exposure by distance. A more permanent guard will be installed, at least three feet from the front panels of the CFX, by July 1,1985.
Radiation intensities at this guard will correspond to Item Nos. 5, 9 & 11 in the table.
- 5) Routine work in the cavity consists of accelerator preparation for approxi-mately five minutes per week. Most of this time is spent at the " Cooling Unit" which corresponds to Item No. 2 in the Table.
- 6) If personnel plan to work in the cavity for more than two hours on any given day, the proposed work must be reviewed by the RSS.
The RSS will consider time, distance, and intensity to be sure that doses will be within legal limits. The-RSO reviews film badge reports and will modify time limits if appropriate.
--2 8-
... =
A4.0 Statistical Summary of Film Badge Monitoring Results The following tables describe annual whole Body Dose Ranges (Rems) for personnel working in the CFX laboratory area for recent years.
Doses include neutron, beta and gamma exposures
{2 and are for the most part a result of radioactive material handling.
. w