ML20154S263

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Registry of Radioactive Sealed Sources & Devices,Safety Evaluation of Control Device for X-Ray Crawlers for Model Master Minder Model 2.Certificate:NR-300-D-877-S
ML20154S263
Person / Time
Issue date: 10/21/1998
From: Michele Burgess, John Lubinski
NRC
To:
Shared Package
ML20154R650 List:
References
SSD, NUDOCS 9810270360
Download: ML20154S263 (5)
v • d • e


Text

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' REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES .

--SAFETY' EVALUATION OF DEVICE

- NO.: NR-300-D-877-S- DATE: OCT 21 1998 PAGE 1 OF 5 -

' DEVICE TYPEi ' Control Device For X-Ray Crawlers-

' MODEL: ,

Master Minder Model 2 MANUFACTURER / DISTRIBUTOR: Gamma Industries,-Inc.

-P.O. Box 2543 Baton Rouge,s.. LA 70821 E

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i SEALED SOURCE'MODEL DESIGNATION: 3-Gamma. Industries VD(HP) )

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. . . . . j ISOTOPE: MAXIMUM' ACTIVITY ~:  ;

Cesium-137. 225 mci 1(8.33-GBq)

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Deplet'ed Uranium t Shielding, 7.7'kg (17 lb.)

. 6 Months-

. LEAK TEST FREQUENCY:

PRINCIPAL USE: ' (A) Industrial Radiography 1

1 CUSTOM-DEVICE: YES. ~X NO

. a 9810270360 981021 PDR RC

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.~: NR-300-D-877-S DATE: OCT 21 1998 i PAGE 2 OF 5 ,

DEVICE TYPE: Control Device For X-Ray Crawlers l

DESCRIPTION: ,

I The Master Minder Model 2 is.a right circular cylinder, I approximately_6-1/8 inches (15.56 cm) in length, excluding  ;

' carrying handle, and 5-9/16 inches (14.13 cm) in diameter. The j right circular cylinder is constructed from aluminum and houses a

-depleted uranium. shield which is also a right circular cylinder,. I approximately 3-3/4 inches (9.53 cm) long by 2-7/8 inches (7.3

cm)-in diameter. The depleted uranium shield is r sitioned
horizontally in the middle of the aluminum housing ay an aluminum )

support secured'with pins. A carrying handle is attached to the

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l top plate of the device, and the bottom plate of the device has a I'

-1/2Linch-(1.27 cm) deep "V"~ shape indention'to facilitate placing the device on a curved-surface. .To one side of the' device is

-attached a lock. box which is used-to secure the source in the

shielded position. A source stop on the source assembly and a I lock insert in the lock box prevent the source assembly from ~

1 coming through the lock box. side of the device. The shield has a l blind source tube, so that the source assembly cannot come out j the opposite side of the shield. The source holder is l constructed from. stainless steel cable and a tungsten rod  !

(Attachment 2). The 2 inch (5.08 cm) long tungsten rod has a I aGamma Industries Model VD(HP) source silver-soldered to one end )'

and~a 3-1/4 inch (8.26 cm) stainless steel cable silver-soldered

.toitheLcable-approximately 1 inch from the source holder, and a brass handling knob is silver-soldered to the end of the j stainless 1 steel cable. I i

I LABELING:

'The Master Minder Model 2Lbears the' manufacturer's label which specifies the' isotope andicapacity. The label also specifies-the model number, serial-number,- and source number. A radiation caution symbol is-displayed-on the right side-of the label.

The device is al'so labeled.with'two (2) Danger, Radioactive

. Material labels,-which contain instructions:to notify the

. manufacturer or civil authorities.

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. REGISTRY OF RADIOACTIVE SEALED' SOURCES-AND DEVICES ~

SAFETY EVALUATION OF DEVICE.

'NO.: NR-300-D-877-S :DATE: N 2 1 1998' PAGE 3 OF 5 DEVICE' TYPE: Control Device-For X-Ray Crawlers: l CONDITIONS OF-NORMAL USE:

The.MasterLMinder Model 2.is designed.primarily~as a control 1 device for X-ray crawlers. However, it may-also be used in any l other. application where beam radiation is desired. This device l imay be used only by persons specifichily licensed by the U.S. NRC l or an Agreement. State.

I EXTERNAL' RADIATION LEVELS:

A-survey ~of the prototype. device loaded with 220 mci'(8.14 GBq) of Cs-137 was performed using a G-M survey meter that was  ;

calibrated against Cs-137. A maximum exposure rate of 80 mr/hr l on contact was found at the bottom ~of:the device near the beam

' port. . At 6 inches (15.24 cm) from this spot, the exposure rate was 10 mr/hr and at 1 meter (3.28.ft), the exposure rate was less than 1 mr/hr.

QUALITY ASSURANCE AND: CONTROL:

'The Master Minder Model 2 is manufactured and tested according to

~ Gamma Industrie's quality assure.nce program for manufacturing as l outlined in Gamma Industries " Quality-Assu'rance Program for Radioactive Material Packages," U.S. NRC-Approval No. 0010, expiration date 11/30/84.

LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:

!

  • rnis device shall be possessed and used'by persons  ;

specifically. licensed by the U.S. NRC or an Agreement State. l

  • The manufacturer supplies a1 step-by-step operating procedure t and'a step-by-step inspection and. maintenance procedure for this device. The device:should be used in accordance with L the manufacturer's operating procedures or other 4

instructions approved in writing by the licensing authority.

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE i

NO.: NR-300-D-877-S DATE: OCT 21 1998 PAGE 4 OF 5 1

l DEVICE TYPE: Control Device For X-Ray Crawlers l l

l LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE (Cont'd):

l

  • The licensing of this device should include provisions for 17 pounds (7.7 kg) of depleted uranium.
  • The manufacturer states that the device meets Department of Transportation's Specification 7A, Type A, as a container.

-* Handling, storage, use, transfer, and disposal: To be determined by the licensing authority.

  • This registration sheet and the information contained within the references shall not be changed without the written consent of the NRC.

SAFETY ANALYSIS

SUMMARY

The Master Minder Model 2 device is no longer manufactured or distributed by Gamma Industries, Inc. and Gamma Industries, Inc.

is no longer in business. Therefore, the registration certificate is being converted to an inactive registration certificate.

The device was originally approved for licensing purposes by the Louisiana Division of Radiation Control. NRC attempted to obtain copies of all information submitted by the registrant in support of the evaluation. However, NRC could not locate all the information. Therefore, no safety evaluation of the device was performed as part of the conversion of the certificate to inactive status.

REFERENCES:

The'following supporting documents.for the Master Minder Model 2 are hereby incorporated by reference and are made a part of this

registry document.

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1 4 - 1 ^g '9 l-L REGISTRY..OF RADIOACTIVE SEALED SOURCES ANDD'EVICES SAFETY EVALUATION-OF DEVICE

  • l NO.:.NR-300-D-877-S DATE: - @ 2 l 1998 PAGE.5.OF 5 DEVICE' TYPE: Control Device For.X-Ray Crawlers

' REFERENCES (Cont'd):  ;

-* JInformation provided by Gamma Industries in their letter dated May 18, 1981 and enclosures thereto.

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l ISSUING-AGENCY: i

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U.S. Nuclear. Regulatory Commission .

i Date: OCT 21 1998 -

Reviewer: /////-

6hn W. Lubinski I

3 Date: Concurrence: k/M4 [Mu Michele L. Burgsss I.

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