ML20005A856
| ML20005A856 | |
| Person / Time | |
|---|---|
| Issue date: | 06/23/1981 |
| From: | Wiedeman D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Crotty J ST. MARYS HOSP., EAST ST. LOUIS, IL |
| Shared Package | |
| ML20005A857 | List: |
| References | |
| NUDOCS 8107010385 | |
| Download: ML20005A856 (2) | |
Text
'
.\\\\ >g))i g' A d~
jo UNITED STATES g
NUCLEAR REGULATORY COMMISSION n
' d,!
\\
S E
REGION 111
'\\
V I
0, 799 ROOSEVELT ROAD e
GLEN ELLYN, ILLINOIS 6o137
)[
Cg
]
%*****o Q &* / ll O/
JUN 2 31981 o.
4/
-4 es St. Mary's Hospital License No.12'-
2 ATTN: John P. Crotty, M.D.
129 North 8th Street East St. Louis, IL 62201 Gentlemen:
This refers to the routine safety inspection conducted by Dr. W. J. Adam of this office on June 12, 1981, of activities at St. Mary's Hospital authorized by NRC Byproduct Material License No. 12-13189-02 and to the discussion of our findings with Mr. C. Ahrens and Ms. D. McClary at the conclusion of the inspection.
The inspection was an examination of activities conducted under your license as they relate to radiation safety and to compliance with the Commission's rules and regulations and with the conditions of your license. The inspection consisted of a selective examination of procedures and representative records, observations, independent measurements, and interviews with personnel.
This inspection also included a measurement of the output of your tele-therapy equipment. Our measurement was made using a Victoreen Model 570 Condenser R-Meter with Model 621 chamber, calibrated by the National Bureau of Standards Laboratory. The source-to-chamber distance was 80 centimeters and the field size used was 10 by 10 centimeters. After applying standard correction factors for temperature, pressure, attenuation, inverse square, backscatter, timer error, and roentgen-to-rad converstion, our measurement of the output of your teletherapy equipment was 83.7 rads per minute at the point of maximum buildup in an extended tissue phantos.
The most recent full calibration of your teletherapy equipment, conducted on August 22, 1980, reported a measured output for the same exposure parameters of 95.3 rads per minute. Applying a correction factor to account for 9 months and 22 days decay, the value calculated from the August 22, 1980 calibration becomes 85.68 rads per minute.
Based on the close agreement in measured output values, we feel the actual output of your teletherapy equipment to be within established guidelines of t 5 percent.
T607 s
Ii
- 8 1 0 7 0 1 0 3 <? $
e.
-St. Mary's Hospital JUN 2 3 ES1 During this inspection, certain of your activities appeared to be in non-compliance with NRC requirements, as specified in enclosed Appendix A.
A written response, submitted under oath or affirmation, is required.
We will. gladly discuss any questions you have concerning this inspection.
Sincerely, i
D. G. Wiedeman, Acting Chief Materials Radiation Protection Section 1
Enclosure:
Appendix A, Notice of Violation ec w/ encl:
DMB/ Document Control Desk (RIDS) i I
s RIII sf M
Ada"m/db iedema
/19/8 i
V5 P/
!o
-