ML20211L057

Registry of Radioactive Sealed Sources & Devices,Safety Evaluation of Device for Models 35-0201 Through 35-0208. Certificate:NR-8094-D-807-S

ML20211L057
Person / Time
Issue date:	09/29/1997
From:	NRC
To:
Shared Package
ML20211L061	List: ML20211L057 ML20211L076
References
SSD, NUDOCS 9710100094
Download: ML20211L057 (5)

Text

i REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE hO. NR-8094-D-807-S DATE: September 29, 1997 PAGE 1 OF 5 DEVICE TYPEt Fill-Level Gauge Source Holder M.ODEL: 35-0201 through 35-0208 MANUFACTURER / DISTRIBUTOR: Brun Sensor Systems, Inc.

1150 West Third Street Columbus, OH 43212 SEALED SOURCE MODEL DESIGNATION: Nuclear Chicago 850233 1 AECL C-168 ISOTOPE: MAXIMUM ACTIVITY:

Cesium-137 250 millicuries (9.250 GBq)

Cobalt-60 15 millicuries (0.555 GBq)

LEAK TEST FREOUENCY: 6 months PRINCIPAL USE: (D) Gamma Gauge CUSTOM DEVICE: YES X NO 9710100094 970929 PDR RC

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PDR

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO. NR-8094-D-807-S DATEt September 29, 1997 EAGE 2 OF 5 DEVICE TYPE: Fill-Level Gauge Sour e Holder DESCRIPTION:

The outer physical characteristics of these devices are taose of a closed steel cylinder 6 inches (152.4 mm) in height and 5-1/2 inches (139.7 mm) in d!ameter, mounted with its longest axis vertical on a 1/4 inch (6.4 mm) thick steel bottom plate.

The bottom plate is attached to the cylinder with eight screws.

The 1/4 inch thick steel top plate is welded to the cylinder to the cylinder wall; or mounting may be accomplished through the use of an oversize bottom plate with mounting holes. Each of the units is designed to be watertight.

Thc only significant differences between the units . ' in the mounting brackete and electrical conduit entrances tch are attached to the bottom and sides of the units. The .adiation beam ports are fan shaped and are 1/4 inch wide. The port angle (measured downward from the horizontal at the top of the source) is about 30 degrees.

The source of radiation is mounted at the approximate center of a cylindrical shield consisting of a hollow lead cylinder, 31/32 inch (24.6 mm) thick, surrounding two Mallory-1000 cylindrical shields fitted together one on top of the other. The lower shield section includes the beam port and suitable machined openings for the mounting of the Mallory-1000 source rotor. The source at the edge of the rotor is moved 45 degrees, in a horizontal plane, between the "on" and "off" positions by the application of power to the rotary solenoid mounted at the bottom of the shield assembly and coupled to the rotor. 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 rot ar as "on" or "of f" by parallel wired, dual, red and green lights at the control console.

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQti NR-8094-D-807-S DATE: September 29, 1997 PAGE 3 OF 5 REVICE TYPE: Fill-Level Gauge Source Holder LABELING:

A metal label 3-1/2 inches (88.9 mm) by 2-1/2 inches (63.5 mm),

attached to the outside of the device bears the radiation symbol and, typically reads:

CAUTION: RADIOACTIVE MATERIAL Cobalt-60 mc Model No. 35-0201 BRUN CORPORATION Re oval of Label is prohibited The label is basically yellow in color with black lettering and a magenta radiation symbol. It is mounted over a " lock bolt" that secures the outer case to the lower shield.

EXTERNAL RADIATION LEVELS:

Accessible area at one foot (304.8 mm) from the surface of the devices are 1 mR/hr (10 pSv/hr) or less with a 250 millicurie, cesium-137 or a 5 millicurie (185 MBq) cobalt-60 source in the "off" position. Radiation levels for higher activities may be derived by extrapolation.

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: The user was instructed by the Brun Corporation to avoid tampering with the device containing the source. The Brun Corporation stated that a service contract would 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.

I REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO..t NR-8094-D-807-S DATE: September 29, 1997 PAGE 4 OF 5 DEVICE TYPS1 Fill-Level Gauge Source Holder LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE: (Cont.)

• 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: The devices were evaluated on the basis that they will be mounted at the side of a steel mold thereby preventing access to the beam of radiation. If other applications are proposed, an evaluation of radiation levels in the forward direction will be necessary.

• 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 source.

SAFETY ANALYSIS

SUMMARY

This device was originally approved for licensing purposes on February 9, 1968, by the Atomic Energy Commission (AEC). The Model 35-0201 through 35-0208 are 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 saine month.

There is insufticient information on file for this device to perform a safety evaluation. Therefore, this certificate is being taken to inective status without further review based on the original review and approval issued by the AEC.

REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO. NR-8094-D-807-S DATE: September 29, 199'i PAGE 5 OF 5 DEVICE TYPE: Fill-Level Gauge Source Holder REFERENCEQ1 The following supporting documents for the Models 35-0201 through 35-0208 Fill-Level Gauge Source Holders are hereby incorporated by reference and are made a part of this termination registry document.

• Brun Corporation's letters dated January 20, 1967, and October 9, 1967, with enclosures thereto, ISSUING AGENCY:

U.S. Nuclear Regulatory Commission i

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s C **0 p *- 8% UNITED STATES s# ,j NUCLEAR REGULATORY COMMISSION p

'f WA&HINoToN. o.C. PouH001

'% , ,,,, / September 29, 1997 NOTE TO: FILES LISTED BELOW FROM: MICHELE BURGESS 77[l[

DATE: SEPTEMBER 29,1997 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) duing 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 Reoistration Number inactive Realstration 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 Si 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 information conceming Brun Sensor Systems and these devices, including drawings, refer to the NRC archive file: Job R023, Shelf 10196, Box 05, I

y,1ff I

1. r1 lillillilipyli!Ialp!!Il y- mee+: m--c-

PAGEi NRC FORM 667 U. G. NUCLEAR REGULATORY COMMi&SION 3e.

REQUEST FOR A SEALED SOURCE OR DEVICE EVALUATION g yj INSTRUCTIONS: Send tfwe request AND a copy of all reistad letters /apphcotione and cirewings to: The see6ed source Safety Piection ATTN. Chief, OWFN MnN Stop 8 H3 Charge the Licente Tracking Systern rnilestorw to 19 and assign to revteur code I-5.

NOTE: Retain a copy of this request wth the appleauon and background %s.

REGION / LOCATION:

N81L" bN -1Se*J,A >>> ]I C 11 Ill IV V HQ O LFDCB inEPHONE NUMDf.R DATE TYPE OF ACTION REQUESTED (Check as appropriate)

Rs. "h.e uncEs eaWE SOURCE REVIEW ] Al[ENDMENT OF REGISTRATION 1HEET B

MAE ct*<fRR NUMDER(S) htIEVICE REVIEW g ( ,

ErntrovncAnoN DAts LCLNSE NUMMR(S) CUSTOM REVIEW /<4/is, v 1 ti '.Mru4 ,

i .* t r , tr . .i wMMLNTS y / f,7 i/ # 3

/ [ ,, y h ) hia+

FOR 8888 USE ONLY REVEwtR MODEL NUMBERS +

NUMDER AS$10NED n . ....,

9,NY Datt REcElvto DATE AS$10NED DATE TQ FLES f S U/ - 7 hl/ f /

TYPE OF ACTION (Indicate the roumber of each type) /

_ l COMMERCIAL DISTRIBUTION (FORMAL) l USE BY A SINGLE APPLICANT (CU,sTOM)

SOURCE (90) DEVICE (DA) SOURCE (90) DEVICE (98)

NEW NEW ~

NEW ~

NEW AMENDMENT / AMENDMENT AMENDMENT AMENDMENT

/

JNO SAFETY EVALUATION REQUIRED j LICENSING ACTION REQUIRED IF KNOWN -

NO FEES REQUIRED NO j OTHER (Sp*W)

TOTAL NUMBER OF NOTES y pg ,/ ..,

REVIEW HOURS (,yy**6 "

NUMBER OF DEFICIENCY LETTERS O '4 ' ' p -

NUMBER OF DEFICIENCY CALLS FOR BILLING PURPOSES ONLY NAME CHANGE ADDRESS CHANGE NEW REGISTRATION - jnODUCT INACTlW -

ADD TO BILLING < REMOVE FROM BILLING FOR FEE USE ONLY rn ce # EE FEE CATEGORY ~

[ , ] 9A 98 9C 90 AuouNT RcCtivED c#7 g CHECK NUMMR MATAi4N UPDATED Qc d AS REQUIRED DAVE OF (MCK 400 -

7 y p1')J MATSYS UPDATED

, _ g# N* AS REQUIRED u~vio s, '

y- wimuN Dart cceeMENTs 'A NMC FORM 847 Seh