ML20217G542
| ML20217G542 | |
| Person / Time | |
|---|---|
| Issue date: | 09/29/1997 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20217G546 | List: |
| References | |
| SSD, NUDOCS 9710140003 | |
| Download: ML20217G542 (6) | |
Text
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A REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQ 1 NR-8094-D-811-0 DATE: September 29, 1997 PAGE 1 OF 5-DEVICE TYPE:
Fill' Level Gauge Source Holder MODEL -
35-3601 MANUFACTURER / DISTRIBUTOR:
Brun Sensor Systems, Inc.
1150 West Third Street Columbus, OH 43212 SEALED SOURCE MODEL DESIGNATION:
AECL C-168 ISOTOPE:
MAXIMUM ACTIVITY:
Cobalt-60 1 curie (37 GBq)
TRAK TEST FREOUENCYi 6 months PRINCIPAL USE:
(D) Gamma Gauge
' CUSTOM DEVICE:
YES
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- NO 9710140003 970929
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETYeEVALUATION OF. DEVICE HQur NR-8094-D-811-S DATE: September 29, 1997 PAGE 2 OP's
-DEVICE TYPE:
Fill Level Gauge Source Holder DESCRIPTION:-
The outer characteristics of the device are those of a right cylinder approximately 17 inches (431. 8 mm) in length and 11 inches (279.4 mm) in diameter.
The device consists of lead and-Mallory-1000 shielding contained within an outer steel case with a wall thickness of 1/4 inch (6.4 mm).
The source is moved from its "off" position at the approximate center of the cylindrical shield mass to the "on" position toward one end of the shield by action of a pneumatically powered-mechanism.
The factuating mechanism acts on a " choke cable" drive line which
- passes through a spiral' tube (within the shield mass) and is1 approximately 5 inches _ (127 mm) from the "off" position to the
'on" position.
The-pneumatic drive mechanism works against an-
-expanding coil spring so that electrical power failure or loss-
- of-air pressure will result in the contracting spring. returning the_ source to.the "off" position.
In the "on" position the-source within the source container is at the apex of a truncated cone collimator.
'The actuation mechanism is enclosed in a compartment at the bottom of the cylindrical device closed by a steel plate secured in place by112 cap screws.
An " emergency" manual means for returning the source-to the "off" position is by an extension of the actuating mechanism which procrudes through the bottom plate of-the device..This extension may be rotated by the use of a
" Crescent" or.open-end' wrench.
The "on" and "off" positions-of the source are indicated by a red and a green painted area on the
" lock: tube" 2 hough which the actuator extension protrudes.
The device is mounted:by means"of a bracket welded to the o
cylindrical surface of the device directly opposite the collimator aperture.
The "on" and "off" positions of the source are indicated by red cand green-lights at the control console which may be located some-
' distance from the~ device itself and red and green lights at the operator's station near the steel mold where the device will be
. located._:These lights are actuated by an electrical circuit which11s completed by the closing-of a micro switch which is activated by the pneumatic actuating mechanism.
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. REGISTRY OF RADIOACTIVE SEALED SOURCJS AND-DEVICES:
SAFETY EVALUATION;OF DEVICE-HQ21LNR-8094-D-811-S' DATE: September-29, 1997 PAGE 3 OF-5 DEVICE TYPE Fill
- Level: Gauge: Source Holder DESCRIPTIONt (Cont.)
Brun Sensor Systems furnished an instruction manual with each device! including a section entitled " Safety".
This section;
. covered general safety precautions related to the structure and-method of operation of the device, warnings against tampering-
.with the device in any way, including attempts to-make repairs-to the device-or relocate the device, and procedures to be followed in the event'of an " emergency" such as accidental damage to the:
device or device malfunction including failure of the source =to the "off" position.
LABELING:
Each device bears two' labels.
One label consists of an aluminum plate 1/32 inch '(0.8 rmn) in thickness attached to the device with four drive screws and bearing the following:
1.
The radiation symbol in color, magenta on a yellow background.
2.
'" CAUTION:
RADIOACTIVE MATERIAL."
-3.
Designation of=the-nuclide,;the activity, the date of measurement of the activity, the capsule number, and the modelEnumber-of the device.
4~
" REMOVAL OF LABEL IS* PROHIBITED."
5.-
"Brun: Sensor 1 Systems,-Incorporated."
The second-label on the device consists of-aE" Caution, Radiation
' Area" sign painted onto the outer surface of>the' device and includes the' radiation symbol;in color,< magenta on yellow.
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-8094-D-811-S DATE: September 29, 1997 PAGE 4 OF 5 DEVICE TYPE:
Fill Level Gauge Source Holder PROTOTYPE TESTING:
A prototype was cycled a total of 5000 times.
After each 1000 cycles, the device source drive mechanism was disassembled and examined for 'vear, binding, or other malfunction.
The rubber air line has a melting point of 350' F (177* C) which determines the temperature limit for the device.
EXTERNAL RADIATION LEVELS:
With a nominal 400 millicurie (14. 8 GBq) cobalt-60 source in the device, radiation levels vary from a low 0.05 mR/hr (0.5 pSv/hr) to a high of 2.5 mR/hr (25 pSv/hr) at one foot (304. 8 mm) from the device surface with the source in the "off" position.
With the source in the "on" position, radiation levels vary from 0.1 mR/hr (1.0 pSv/hr) to 3.2 mR/hr (32 pSv/hr) outside the cone of primary radiation.
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 exceed 6 months using techniques capable of detecting 0.005 microcurie (185 Bq) of removable contamination.
REVIEWER NOTE:
Brun Sensor Systems had stated that they would install, survey, and leak test each device, including relocation.
REVIEWER NO"'
The Brun Corporation had not described any guards or shnading inherent in the device installation to limit or prevent exposure to the primary beam of radiation.
Therefore, each individual applicant's proposed use of the device should be individually evaluated in this regard.
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-REGISTRY lOF RADIOACTIVE SEALED; SOURCES AND DEVICES
- SAFETY: EVALUATION OF-DEVICE:
I NQul'NR-8094-D-811-Si DATEt September 29, 1997
-PAGE-5"OF 5:
DEVICE TYPE:
Fill Level Gauge Source Holder-SAFETY ANALYSIS
SUMMARY
)
This device was originally approved for licensing purposes on i
P November 9, 1971, by the Atomic Energy Commission (AEC).
The Model 35-3601 Level control System Source Holder is nc 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 by the AEC.
REFERENCES:
The:-following supporting documents for the Model 35-3601 Level 4
Control System Source Holder are hereby incorporated by reference l
and is made a part of this terminated-registry document.
Brun Sensor Systems, Inc., letters dated August 10, 197A, l
and April 9, 1970, with enclosures thereto.
ISSUING AGENCY j -:
-U.S.
Nuclear Regulatory Commission i.
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PAGEi NRC FORM $67 U. S. NUCLEAR REOULATORY COMMIS$10N v
REQUEST FOR A SEALED SOURCE OR gj;/.j7 DEVICE EVALUATION INSTRUCTIONS: Send tfwe requent AND a copy of all related latterChw and drewrige to: The SeaW Source Safety Section, ATTN. Cruef, OWFN Mau Stop 6 H3. Change the License Tracidng System rneestone to 19 and assign to reviewer code 14.
NOTE: Retain a copy of this request with the appitz,ation and background files.
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>f > b d in R IV RV R HO R LFDCB TELEPHONE NUMBER DATE TYPE OF ACTlON REQUESTED (CtHN:k as appropriate)
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] AEENDMENT OF REGISTRATION SHEET QDEVICE REVIEW
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FOR SSSS USE ONLY REVIEWER MODEL NUMBERS 77-NUMBER ASSIONED
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M TYPE OF ACTION (ind6cate the number of each type)
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j COMMERCIAL OtSTRIBUTION (FORMAL) l USE BY A SINGLE APPLICANT (CUSTOM)
SOURCE (9C)
DEVICE (9A)
SOURCE (90)
DEVICE (98)
NEW NEW NEW NEW AMENDMENT
/ AMENDMENT AMENDMENT
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AMENDMENT
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JNO SAFETY EVALUATION REQUIRED j LICENSING ACTION REQUIRED IF KNOWN NO FEES REQUIRED NO
) OTHER (SpecQ)
TOTAL NUMBER OF NOTES l' ' ' # #
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REVIEW HOURS
(, +,g 7. T af NUMBER OF DEFICIENCY LETTERS
'b k NUMBER OF DEFICIENCY CALLS FOR BILLING PURPOSES ONLY NAME CHANGE ADDRESS CHANGE NEW REGISTRATION -
~ODUCT INACM -
ADD TO BILLING REMOVE FROM BILLING FOR FEE USE ONLY TYPE OF FEE FEE CATEGORY AMOUNT RECE1VED
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CHECK NUMBER q
MATANN UPDATED a
AS REQUIRED DATE OF CHECK r
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-N oAn COMMENTS
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NRC FOHM 561 (IW3)
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NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D.C. 20555 0001
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September 29, 1997 NOTr; TO:
FILES LISTED BELOW FROM:
MICHELE BURGESS 79[l[
DATE:
SEPTEMBER 29,1997 Brun Sensor Systems' materials license terminated Jau sy 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 approval issued by the AEC.
Old Reaistration Number inactive 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 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 7
- For additional information concerning Brun Sensor Systems and these devices, including drawings, refer to the NRC archive file: Job R023, Shelf 10196, Box 05.
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