ML20211L200
| ML20211L200 | |
| Person / Time | |
|---|---|
| Issue date: | 09/29/1997 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20211L207 | List: |
| References | |
| SSD, NUDOCS 9710100133 | |
| Download: ML20211L200 (4) | |
Text
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQut NR-8094-D-806-S DATEt September 29, 1997 PAGE 1 OF 4 DEVICE TYPEt Gauge Source Holder MODEL:
35-1101 2
MANUFACTURER / DISTRIBUTOR:
Brun Sensor Systems, Inc.
1150 West Third Street Columbus, OH 43212 SEALED SOURCE MODEL DESIGNATIONr Nuclear Chicago 850233 ISOTOPEt MAXIMUM ACTIVITY:
Cesium-137 50 millicuries (1.85 GBq)
LEAK TEST FREOUENRY1 6 months PRINCIPAL USE:
(D) Gamma Gauge CHSIQM DEVICE:
YES X
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i REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF.3VICE HQ 1 NR-8094-D-806-S.
DATE September 29, 1997 PAGE 2 OF 4 DEVICE TYPE:
Gauge Source Holder DESCRIPTION:
The device is cylindrical in shape, 7-3/8 inches (187.3 mm) in height, and 4-1/2 inches (114.3 mm) in diameter with a 4-3/4 inch (120.7 mm), square, base plate.
The steel base plate, 1/4 inch (6.4 mm) thick, includes 4 mounting holes 5/16 inch (7. 9 mm) in diameter.
The steel cylinder has a 1/8 inch (3.2 mm) wall and a top plate 3/16 inch (4.8 mm) thick.
These components are joined by welds.
The cylinder is filled with lead shielding, which includes two cavities.
A rectangular beam port,-1-7/16 inches (36.5 mm) by 2-7/16 inches (61.9 mm);at the outer surface of the device, tapers to its apex at the approximate position of the source in the *on" position.
The other cavity consists of a vertical hole lined with M inch (12.7 mm) inside diameter steel tubing to accommodate the source rod.
This hole is 5-1/4 inches (133.4 mm) deep and is located on the vertical axis of the cylinder.
The source is mounted at the bottom end of a source rod which is raised a distance of 2-7/16 inches (61.9 mm) to expose the source at the apex of the beam port.
The bottom portion of the source rod, 3/8 inch (9.5 mm) in diameter and 2-1/4 inches (57.2 mm) in length, consists of a Mallory-1000 metal.
This is threaded to the upper portion of the source rod consisting of a 1/4 inch (6.4 mm) square, steel pfece topped by a knob.
A stop secured to the top plate by two screws has a 17/64 inch (6.7 mm) square hole allowing passage of the 1/4 inch square portion of the rod only.
This prevents removal of the source and positions it a t the apex of the beam port.
A set screw in the stop is used to " lock" the source in either the *on" or "off" position.
The source rod may be padlocked to a lock bar (welded to the top plate) to lock the source in the "off" position.
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REGISTRY OF RADIOACTIVE. SEALED SOURCES AND DEVICES
- SAFETY EVALUATION OF. DEVICE 2
- U221 NR-8094-D-806-S DATE: September 29, 1997 PAGE 3 OF 4 I
DEVICE TYPE ___
Gauge Source Holder LABELING:
A metal label 3-3/8 inches (85.7 mm) by 2-3/16 inches (55.6 mm),
attached to the-outside of the device 180' from the radiation i
beam bears the following i-CAUTIONS. RADIOACTIVE MATERIAL Cesium-137 me-Date of Measurement Model No.
35-1101 4
BRUN CORPOR.% TION,. COLUMBUS, OHIO i
The label is basically yellow in color-with black lettering and a
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2 A label attached to the device, opposite the beam port, indicates the-source position as " SOURCE OPEN" and " SOURCE CLOSE" by arrows.
1 EXTERNAL RADIATION LEVELS:
The radiation levels at one foot (304. 8 mm).from the-surface of the device containing 50 millicuries (185 GBq) of cesium-137 are r
- generally less than 1.5 mR/hr (15 pSv/hr) with a maximum of about
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2.5 mR/hr (25 -pSv/hr) at a foot from the top of the surface of the device.
This includes radiation levels for both the "on" and "off": positions of the source.
4 LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
. Handling,-storage, use, transfer, and disposal To be determined by the licensing authority..
The device shall be leak tested at intervals not to exceet 6 months using techniques capable of detecting 0.005 microcurie (185 Bq) of removable contamination.
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. REVIEWER NOTE:
The Brun Corporation had stated that they would install, survey, and leak test each device.
They had also indicated a willingness to provide maintenance and repair services including relocation.
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REGISTRY OF RADIOACTIVE SEALED SOURLES AND DEVICES SAFETY EVALUATION OF DEVICE HQ21 NR-8094-D-806-S' DATES-September 29, 1997 PAGE 4 OP 4 DEVICE TYPE:
Gauge Source Holder LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE (cont.)t REVIEWER NOTE:
The Brun Corporation had not described any guards or shielding inherent in the device installation.
Therefore, each individual application proposed use of the device will have to be individually evaluated.
SAFETY ANALYSIS
SUMMARY
ThisLdevice was originally approved for licensing purposes on-December 6, 1966, by the Atomic Energy-Commission - (AEC).
The Model 35-1101 gauge Source Holder is no longer manufactured and distributed by Brun Sensor Systems.
Brun Sensor Systems materials license terminated January _23, 1973, and the company was acquired by Industrial Nucleonics that same month.
There is insufficient information on file for this device to.
perform a safety evaluation.
Therefore, this certificate is being taken to inactive status without further review based on the original review and approval-issued.
REFERENCES:
The following supporting documents for the Model 35-1101 Gauge Source Holder-are hereby incorporated by reference and are made a part of1this termination registry document.-
Brun Corporation's letter dated August.10, 1972, May 24, 1972, August 7, 1972, May 9,-1968, October 9, 1967, and November 15, 1966, with enclosures thereto.
ISSUING AGENCY U.S. Nuclear Regulatory Commission
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j NUCLEAR REGULATORY COMMISSION l
e WASHINGYoN, D.C. 206ES0001 l
September 29, 1997 1
l NOTE TO:
FILES LISTED BELOW FROM:
MICHELE BURGESS %N[
DATE:
SEPTEMBER 29,19t#7 Brun Sensor Systems' materials license terminated January 23,1973, and the company was acquired by industrial Nucleonics that same month.
The following devices were originally approved for licensing purposes by the Atomic Energy Commission (AEC) during the late '60s and early '70s. These devices are no longer manufactured and distributed by Brun Sensor Systems.
There is insufficient information on file for these device to have performed a safety evaluation.
Therefore, these registration certificates have been taken to inactive status without further review based on the original review and approvalissued by the AEC.
Old Realstration Number IDpetive Reaistration Number NR 192 D 101 U NR 8094 D 801 S NR 192 D-102 U NR 8094 D-802 S NR 192 D 103-U NR 8094 D-803 S NR 192 D 104 U NR-8094 D 804 S NR 192 D 105-U NR 8094 D 805-S NR 192 D 106-S NR-8094-D-806-S 1 NR 192 D 107 U NR 8094 D-807 S ~
NR 192 D-108-U NR 8094 D-808-S NR 192-D 109-U NR 8094 D-809-S NR 192 D-110-U NR-8094 D-810 S NR-192 D 111 U NR-8094 D-811 S
- For additional intormation concerning Brun Sensor Systems and these devices, including drawings, refer to the NRC archive file: Job R023, Shelf 10196, Box.5.
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PAGEi NRC FORM 967 U. S. NUCLEAR REOULATORY COMMISSION Ose; REQUEST FOR A SEALED SOURCE OR yp/.p/
DEVICE EVALUATION INSTRUCTIONS: Send ins request AND e copy of as retened W% and drawings to: The Sosted Source Selsey Seaton ATTN. Ctust, OWFN Mme Stop 6 H3. Change the Lloenee Tracking Syelem rnilselone to 19 and eenign to reviewer onde l 6, NOTE: Reteln a copy of this request with the e and bechground files.
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TELEPHONE NUMetR DAY.
TYPE OF ACTION REQUESTED (Check es,, W ^
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DATE AseKMED DATE TO FEf e TYPE OF ACTION (Indicale the number of each type)
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) COMMERCIAL DISTRIBUTION (FORMAL) l USE BY A SINGLE APPLICANT (CUSTOM)
SOURCE (9C)
DEVICE (9A)
SOURCE (9U)
DEVICE (98)
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AMENDMENT AMENDMENT AMENDMENT d NO SAFETY EVALUATION REQUIRED j LICENSING ACTION REQUIRED IF KNOWN NO FEES REQUIRED NO
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TOTAL NUMBER OF NOTES cF p dsJ e *M @
REVIEW HOURS
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DEFICIENCY LETTERS NUMBER OF DEFICIENCY CALLS
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j NEW REGISTRATION -
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NAME CHANGE ADDRESS CHANGE ADD TO BILLING REMOVE FROM BILLING FOR FEE USE OM.Y TYPE OF FEE FEE CATEGORY l 9A 98 9C 90 AMOUNT nECEivEo.Q (k#
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