ML20211L033

Registry of Radioactive Sealed Sources & Devices,Safety Evaluation of Device Source for Model 35-0101. Certificate:NR-8094-D-802-S

ML20211L033
Person / Time
Issue date:	09/29/1997
From:	NRC
To:
Shared Package
ML20211L037	List: ML20211L033 ML20211L040 ML20211L053
References
SSD, NUDOCS 9710100090
Download: ML20211L033 (5)

Text

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-8094-D-802-S DATE: September 29, 1997 PAGE 1 OF 4 DEVICE TYPE: Fill-Level Gauge Source Holder MODEL: 35-0101 MANUFACTURER / DISTRIBUTOR: Brun Sensor Systems, Inc.

1150 West Third Street Columbus, OH 43212 SEALED SOURCE MODEL DESIGNATION: Nuclear Chicago 850233 f

ISOTOPE: MAXIMUM ACTIVITY:

Cesium-137 50 millicuries (1.85 GBq)

LEAK TEST FREODENCY: 6 months PRINCIPAL USE: (D) Gamma Gauge l

CUSTOM DEVICE: YES X NO l

l 971010C090 970929 l PDR RC

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i REGISTRY OF RADIOACTIVE SEALED SOURCE 3 AND DEVICES '

SAFETY EVALUATION OF DEVICE NQ21 NR-8094-D-802-S DATEt September 29, 1997 PAGE 2 OF 4 DEVICE TYPE: Fill-Level Gauge Source Holder DESCRIPTION:  :

This device is identical to the Models 35-0102 and 35-0103 with the exception of the electrical conduit which had been relocated at the rear.

The source of the radiation-is mounted at the approximate center of a cylindrical _ shield consisting of two Mallory-1000 cylindrical shields fitted together one on the top of the other.

• The lower shield section includes the beam port and suitable machined openings for the mounting of the Mallory source rotor.

The source at the edge of the rotor is moved 45 degrees, in a horizontal plano, between the "ON" and "OFF" positions by the application of power to the rotary solenoid rounted at the bottom of the shield assembly and coupled to the ro.or. The solenoid acts against a return spring which returns the source to the shielded position when power is interrupted.

Internally mounted micro switches indicate the position of the source rotor as "ON" or "OFF" by parallel wired, dual red and green-lights at the~ control console.

LABELING:

t The 35-0101 contains a 0.030 inch (0.76 mm) thick aluminum label, attached by drive pins to the side of the source device, with the following information: the manufacture's name and address,_model, isotope, activity, date of assay, and the words " CAUTION:

RADIOACTIVE MATERIAL". The label is yellow with black lettering and a magenta radiation symbol.

, EXTERNAL RADIATION LEVELS:

Radiation levels in accessible areas at one foot (304.8 mm) from the surface of the device are 3 mR/hr (30 uSv/hr) or less with a 61 millicurie (2.26 GBq) cesium-137 source in the "off" position.

A radiation level of 7 inR/hr (70 uSv/hr) exists over a small area in the_ region of the beam port which is inaccessible with the unit installed. Radiation levels for higher activities may be derived by extrapolation, i

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A RE3ISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQti NR-8094-D-802-S DATE: September 29, 1997 FAGE 3 OF 4 DEVICE TYPE: Fill-Level Oauge Source Holder  ;

PROTOTYPE TESTING:

The monufacturer reported that the source holder had been tested  !

' for on-off. operation and structural integrity et temperatures ranging from O'F (-17.8'C) to 250'F (121.1*C) and from 10% to '

100% humidity.

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-61 months using techniques capable of detecting 0.005 microcurie (185 Bq) of removable contamination.

• REVIEWER NOTE: The devices were_ evaluated on the basis that they will be mounted flush to the side of a steel mold

- thereby preventing access to the beam of radiation and reducing radiation levels in the forward direction to about 0.1 mR/hr .(1 uSv/hr) . If other applications-are proposed, an evaluation of radiation levels in the forward direction '

will be necessary.  ;

• REVIEWER NOTE: The user was instructed by the Brun Corporation to avoid tampering with the device containing the cesium-137 source. The Brun Corporation had stated that a service contract will normally be sold with each device to include visits at six month intervals by'a Brun Corporation representative for the purpose of inspecting the devices and performing source leak tests.

• REVIEWER NOTE: The Brun Corporation had also stated that

- they would install and relocate the source-holders and perform radiation surveys at the time of installation.

-* - REVIEWER NOTE: Since an "on-off" indicator is not located at the source shield and since the control console may be remote from_the shield, consideration must be given to exposure.-of persons not aware of the exposed position of the s o u r c e '.

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-8094-D-802-S DATE: September 29, 199'l PAGE 4 OF 4 DEVICE TYPE: Fill Level Gauge Source Holder SAFETY ANALYSIS

SUMMARY

.1.

This device was originally approved for licensing purposes on July 25, 1966, by the Atomic Energy Commission (AEC). The Model 35-0101 Fill-Level 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 Corporation 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 document for the Model 35-0101 Fill-Level Gauge Source Holder is hereby incorporated by reference and is made a part of this termination registry document.

• Brun Corporation's letter dated July 13, 1966, with enclosures thereto.

ISSUING AGENCY U.S. Nuclear Regulatory Commission

PAGEi NRC FORM 667 U. S. NUCLEAR REOULA1ORY COMMISSION R e, REQUEST FOR A SEALED SOURCE OR g/gp yp DEVICE EVALUATION IN8TRUCTIONS: SerW this request AND e copy of et rotated letterWapphcetione and drowings to The Scaled Source Safety Section. ATTN; CNef.

OWFN Me8 Stop 6 H1 Change me License Tracidng System rnaleatone to 19 and ese6pn to revlear code L5.

NOTE: Reteen e cq y of tNo requoet with the opphcotton and t>ectground files.

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"" * "' A ' ' b d "" li R ll lli O IV V R HQ O LFDCB TELL8+ms HuMetR Dais TYPE OF ACTION REQUESTED (Check as appropriate)

ArvtcAure RAME SOURCE REVIEW AMENDMENT OF REGISTRATION SHEET MAL CONTROL NUMER(9)

BER DEVICE REVIEW g,,,

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FOR SSSS USE ONLY REVIEWER MCOEL NUMERS NUMBEM ASSlQFED v... .: . . . . , . . .... v .-

97-g DATE RECLiYtD DA11 ASSetJNED oATEYOFEEe 17m TYPE OF ACTION (inJ6cate the riumber of each type) df/17

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f} COMMERCIAL DISTRIBUTION (FORMAL) l USE BY A SINGLE APPLICANT (CUSTOM)

SOURCE (9C) DEVICE (9A) SOURCE (90) DEVICE (98)

NEW ]NEW ]NEW NEW AMENDMENT - AMENDMENT AMENDMENT AMENDMENT d NO SAFETY EVALUATION REQUIRED j LICENSING ACTION REQUIREDIF KNOWN -

NO FEES REQUIRED NO j OTHER (Specay)

TOTAL NUMBER OF NOTES

REVIEW HOURS # I

(, 4[ "7 '"'

NUMBER OF Ma"" '>r" #~

DEFICIENCY LETTERS NUMBER OF DEFICIENCY CALLS FOR B4 LUNG PURPOSES ONLY /

NAME CHANGE ADDRESS CHANGE j NEW REGISTRATION - dPRODUCT INACTIVE -

ADD TO BILLING REMOVE FROM BILLING FOR FEE USE ONLY TYPE OF FEE FEE CATEGORY ~

> l9A O 9B 9C 90 5 AMOUNTRECENED L , CHECK NUMBER MATANN UPDATED

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AS REQUIRED oArE c, CuECx I"

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j NUCLEAR REGULATORY COMMISSION WASHINGTON D.C. POSSMoot

'% ,, September 29, 1997 NOTE TO: FILES LISTED BELOW FROM: MICHELE BURGESS 78l/[

DATE: SEPTEMBER 29,1997 Brun Sensor Systems' materials license terminated January 23,1973, and the company was acquired by Industrial Nucleonics that same month.

l The following devices were originally approved for licensing purposes by the Atomic Energy Commission (AEC) during the late '60s and early '70s. These davices are no longer manufactured and distributed by Brun Sensor Systems.

l There is insufficient information on file for theJe 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 Realstration Number inactive Realstration Number NR-192 D-101 U NR-8094 D-801 S NR 192 D 102 U NR-8094-D-802 Sr 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

• • For additional int w.ation 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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