IR 05000335/1978016
| ML17338B250 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 09/08/1978 |
| From: | Gibson A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML17338B249 | List: |
| References | |
| 50-335-78-16, NUDOCS 7810180192 | |
| Download: ML17338B250 (5) | |
Text
~gS IIE00 P
g UNITED STATES NUCLEAR R EGULATORY COMMISSION
REGION II
107 MARIETTASTREET, N,W.
ATLANTA,GEORGIA 30303 Report Nos.:
50-250/78-15 and 50-251/78-15 Docket Nos.:
50-250 and 50-251 Eicense Nos.:
Florida Power and Light Company Advanced Systems Technology Attn:
Dr. R. E. Uhrig, Vice President P. 0.
Box 529100 Miami, Florida 33152 Inspected at:
Turkey Point Units 3 and 4 Inspection conducted:
July 17, 1978 Inspector:
W. J. Millsap Reviewed by:
A. F. Gibson, Chief Radiation Support Section Fuel Facility and Materials Safety Branch Rhhg Date Ins ection Summa Ens ection on Jul
1978 (Re ort Nos. 50-250/78-15 and 50-251/78-15)
Areas lns ected:
Whole body counting practices and procedures, and a
test count of the NRC phantom on the whole body counter.
The inspection involved 4 inspector-hours on site by one NRC inspector.
Results:
In the one area inspected, no items of noncompliance or deviations were identifie RII Rpt. Nos. 50-250/78-15 and 50-251/78-15 DETAILS I Prepared by:
W. J. Hillsap, R
ation Special st Radiation Suppor Section Fuel Facility and Materials Safety Branch Date of Inspection:
J
7, 1978 Reviewed by:
A. F. Gibson, Chief Radiation Support Section Fuel Facility and Materials Safety Branch Date 1.
Persons Contacted
+H. E. Yaeger, Plant Manager
+H. F. Story, Corporate Health Physicist
+P.
W. Hughes, Health Physics Supervisor
+D.
W. Jones, Quality Control Supervisor
+J. R. Pendland, FP&L Nuclear Licensing J. L. Danek, Health Physics Training Supervisor T. S. Peck, Health Physics Administrative Supervisor
+Denotes those present at the exit interview.
2.
estionaire Review The inspector reviewed with a licensee representative his answers to the questions concerning whole body counting sent to him in a letter signed by J. T. Sutherland, dated July ll, 1978.
A summary of certain aspects of their results is given below.
a.
Whole Body Counting System This system utilizes the Applied Physical Technology Three - Crystal Chair whole body counter.
The three detectors, each Nal(Tl), are of the following sizes: for the lung, 4" diameter x 4" thick; for the abdomen, 5"
diameter x 4" thick and for the thyroid, 1.5" diameter x 2" thick.
The lung and abdomen crystals are shielded on the sides and back by 4" of virgin lead encased in a 1/4" steel shell; the thyroid crystal is shielded on the sides and back by 2" of virgin lead encased in 1/4" steel shell.
The front and chair shadow shields in the lung and
a RII Rpt. Nos. 50-250/78-15 and 50-251/78-15 I-2 abdomen area are virgin lead 4" thick encased in a 1/4" steel shield; the thyroid shield is 1" thick.
Exposed lead surfaces are covered with a 0.060" thick copper sheet.
The system uses a Nuclear Data 100 multichannel analyzer with 512 channels in use by each of the three detectors.
Each channel represents approximately 3 kev of energy.
Data reduction is accomplished off-site using a Hewelitt Packard Model HP 9830 programmable calculator which utilizes a program of the "matrix method" type supplied by Applied Physical Technology, Inc.
Each detector is calibrated for the 'following radionuclides:
Cr-51, I-131, Cs-137, Co-58 and Co-60.
A representative lower limit of detection for Co-60 and Cs-137 in the lungs and abdomen is 1 nCi; A similar lower limit of detection for I-131 in the thyroid is 1 aCi.
The normal periof of count is 300 sec.
b.
Procedures Procedure HP-31 (Personnel Monitoring of Internal Dose-Bioassays)
of the Health Physics Procedures states that all permanent personnel working in a Radiation Controlled Area will have an initial and terminating as well as an annual bioassay measurement.
This procedure also states that each visitor who'orks in a Radiation Controlled Area will have an initial and final bioassay measurement and an annual measurement if the visitor is at the plant for a sufficient period of time.
Procedure H-31 also states that bioassay measurements shall be performed after a potential uptake of radioactive material has occured and as the Health Physics Supervisor directs.
Section 8.6 of Health Physics Procedure HP-31 requires all bioassay results to be reviewed by the Health Physics Supervisor and specifies action to be taken if results exceed predefined levels.
Procedure HP-34 (Matrix Calibration of the Whole Body Counter) states that the system efficiency should be determined every nine months using a polyethylene tissue - simulating phantom with separate compartments for lung, G. I. tract and thyroid standards and a "matrix method" calibration program, both developed by Applied Physical Technology, Inc.
Procedure HP-33 (Operation of the Whole Body Counter) states that an
RII Rpt. Nos
~ 50-250/78-15 and 50-251/78-15 I-3 energy calibration should be performed on a daily basis when the system is in use, or when there is a temperature change of more than ten degrees centigrade since the last calibration.
The inspector discussed with a licensee representative the desirability of a routine efficiency check for the whole body counter, as well as procedural consideration of how, to distinguish between external and internal contamination of individuals who have been whole body counted.
The licensee representative agreed to consider these matters.
3.
Test Count of the NRC Phantom At the request of the inspector, the licensee counted a torso phantom provided by the inspector.
The licensee informed the inspector of the amount of each radionuclide detected in the phantom.
Since this phantom will be counted by other licensees in Region II, the actual amount of each radionuclide present in the phantom at the time of the count was not communicated to the licensee at the tijae of this inspection.
A summary report will be provided to participating licensees at the conclusion of the test program.
4.
Exit Interview At the conclusion of the inspection on July 17, 1978, the inspector met with the Plant Hanager and members of his staff to discuss the results of the inspection.
Those present are noted in paragraph 1.
The inspector reiterated that the NRC phantom would be provided at a later dat