ML20154R853

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Registry of Radioactive Sealed Sources & Devices,Safety Evaluation of Radiographic Exposure Device for Model Pipeliner Model 201.Certificate:NR-300-D-867-S
ML20154R853
Person / Time
Issue date: 10/21/1998
From: Michele Burgess, John Lubinski
NRC
To:
Shared Package
ML20154R650 List:
References
SSD, NUDOCS 9810270208
Download: ML20154R853 (6)
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.,. REGISTRY.;OF RADIOACTIVE' SEALED? SOURCES-AND DEVICES SAFETY. EVALUATION
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, 7 NO;: NR-300-D-867-S' DATE: '@ PAGE 1 OF 6-  ?

p' 799 DEVICE' TYPE: Radiographic Exposure Device '

,'MODEL': PipelineryModel 2'01 MANUFACTURER / DISTRIBUTOR: Gamma. Industries, Inc.

P.O. Box 2543 Baton Rouge,..LA 70821 l

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. SEALED SOURCE MODEL DESIGNATION: Gamma' Industries PL-2 l I

/ ISOTOPE: . MAXIMUM ACTIVITY:

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= LEAK TEST' FREQUENCY: '6 Months

.! PRINCIPAL USE: (A)' Industrial Radiography )

.. C U S T O M' D E V I'C E : YES X NO 9810270208 981021

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-300-D-867-S DATE: OCT 21 1998 PAGE 2 OF 6 DEVICE TYPE: Radiographic Exposure. Device DESCRIPTION:

The device measures approximately 6-1/2" (16.51 cm) from the control knob to the rear of the camera and 7-1/4" (18.42 cm)

-tall. The device body is constructed of 4-1/4" (10.8 cm) outside diameter by 0.204" (5.18 mm) (wall-thickness) stainless steel tubing. A 1/4" (6.35 mm) stainless steel top is welded to the device. Six cap screws attach a 5" (12.7 cm) square pipe adaptor faceplate to a pipe housing ring. The pipe housing ring is welded to the pipe housing, permanently retaining the depleted uranium shield in the pipe housing. The depleted uranium shield is a right circular cylinder, with the top taking a hemispherical dome configuration. The shield is 3.842" (9.76 cm) in diameter by 4.156" (10.56 cm) in length. A snap ring holds the source capsule securely in a tungsten insert which has been press-fit into a hole in the center outside of a 2.187" (5.55 cm) diameter by 1" (2.54 cm) thick depleted uranium wheel. This source wheel is rotated by a tungsten shaft which is 0.373" (9.47 mm) in diameter at the wheel and 0.498" (12.65 mm) in diameter at the locking mechanism. The wheel is secured to the shaft with a Woodruff key. The tungsten shaft is supported by roller bearings.

The source position is controlled by rotation of the tungsten shaft. In the shielded position, the source is 180 from the pipe adaptor faceplate and oriented toward the dome top part of the depleted uranium shield. A-plunger type lock is incorporated to discourage unauthorized use. A remote activator wheel, which is keyed to the tungsten shaft, accepts the lock plunger to prevent the rotation of the source wheel from the " safe position." This device cannot be locked unless the source is completely.in the " safe position." A line, engraved and accented with red paint from the edge of the brass control knob to its center, indicates the position of the source.

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1 REGISTRY.OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE l

NO.:.NR-300-D-867-S DATE": OCT 21 1998 PAGE 3 OF 6 I

DEVICE TYPE: Radiographic Exposure Device ,

1 LABELING:

The device bears the' manufacturer's name plate which specifies that it contains approximately 26 pounds (11.5 kg) of depleted ,

uranium. The label also specifies the isotope and the maximum j nominal activity of the source permissible to be loaded into the l camera. A second plate ir attached to the device which specifies the source manufacturer, the model number, the serial number, the activity.and date of calibration. Two other identical labels '

with the conventional radiation symbol and caution colors state: l

" DANGER, DO NOT HANDLE, RADIOACTIVE MATERIAL, NOTIFY GAMMA I INDUSTRIES, BATON ROUGE, LOUISIANA OR CIVIL AUTHORITIES."

' CONDITIONS OF NORMAL USE:

This device is intended primarily for pipeline work. When used i in this manner, the operator should receive only scattered radiation. 'The device is attached to a pipe by means of a chain and frame. This device may be remotely operated, either with remote controls available as an accessory, or with any other set of Gamma Industries crankout controls having either long "A" type or short "G" type (old-style) Saf-T-Key connectors. With the controls connected and the camera unlocked, the operator must crank the control approximately 180 clockwise to expose the source. Mechanical stops in the camera's locking mechanism prevent the source wheel from turning beyond this point. To secure the source, the control handle must be rotated counterclockwise approximately 180 . The mechanism will stop the rotation at the point where the source is completely shielded, and the device can then be locked. Remt.e operation is strongly recommended for iridium-192 source activities in excess of 100 Ci (3.7 TBq) (nominal). Below 100 Ci (3.7 TBq), operation may be conducted as with any other pipeliner-type device.

The source in this device may also be exposed manually by rotating the brass control knob 180 clockwise after the camera is unlocked. To secure the source in the safe position, the brass control knob is rotated 180 counterclockwise and tha lock plunger depressed.

REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-300-D-867-S DATE: I IS90 PAGE 4 OF 6 DEVICE TYPE: Radiographic Exposure Device EXTERNAL RADIATION LEVELS:

The source within the device is located less than four inches from the outer surface. Utilizing 206 Ci (7.62 TBq) of Iridium-192 and extrapolating to the maximum of 240 Ci (8.88 TBq), the following dose rates were obtained using a Gamma Industries Model 200 survey meter with small volume G-M detector:

1. Source in Shielded Position (mr/hr) ( Sv/hr)
a. 6" (15.24 cm) from the surface: 47 (highest) 470
b. Surface of device 466 (highest) 4660
c. Handle 70 700
d. Gonadal dose rate (when carried) 10 100
e. 5' (1.52 m) from camera 0.5 5
f. "On-off" knob 25 250
2. Source in Exposed Position, Device Attached to 16" (40.64 cm) Diameter Pipe, 1/4" (6.35 mm) Wall Thickness, on a Concrete Floor (mr/hr) (Sv/hr) I
a. Body of operator at 2' (60.96 cm) 5,200 52
b. Body of operator at 3' (91.44 cm) 1,250 12.5
c. 10' (3.05 m) from the device 300 3
d. 25' (7.62 m) from the device 75 0.75
e. "On-Off" knob 8,000 80 The above readings are approximate and will vary according to scatter conditions. In general, these should be maximum reading, but will depend on the model of survey instrument and dimensions of detector used.

LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:

  • The manufacturer furnishes operating instructions which include step-by-step instructions for using the Pipeliner Model 201 exposure device. The radiographer should be aware of the high radiation scatter zones in the vicinity of the device.

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t REGISTRY /OF/ RADIOACTIVE SEALED SOURCES AND' DEVICES-

SAFETY EVALUATION OF, DEVICE A

NO.: NR-300-D-867-S. DATE: OCT 21 198 PAGE 5 OF 6 DEVICE TYPE: Radiographic Exposure Device LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE (Cont'd):

  • The license application is expected to contain:

instructions given to radiographers concerning the expected doses and dose rates around this device. The radiographer should be aware oil the high radiation scatter zones in the vicinity _of the device.

specific Procedures for operation of this device. Due to high scattered radiation when fully loaded, the radiographer should operate'this device remotely. If the radiographer.must operate the device manually, he is expected to keep his body as far from the device as possible by using the " stretch" technique, which involves. stretching the arm and body as far away as possible to operate.the camera.

a request for Gamma Industries source Model PL-2.

= The license for. radioactive materials should include provisions for 26 pounds (11.5 kg) of depleted uranium.

  • It should be noted that there are no procedures for source exchange by the licensee.

i a _The manufacturer has performed Type B package tests on this device which are being submitted to the NRC for a Certificate of_ Compliance. Shipments prior to issuance are being;made in an approved overpack.

J. The device shall be possessed and used by persons specifically licensed by the NRC or an Agreement State.

. ' 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-

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D '. REGISTRY OF' RADIOACTIVE SEALED' SOURCES AND DEVICES SAFETY EVALUATION _OF DEVICE

, NO.: NR-300-D-867-S 'DATE: 2 l 990 .PAGE 6 OF 6- '

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DEVICE TYPE: . Radiographic' Exposure: Device l :. ,

p ' SAFETY-ANALYSIS

SUMMARY

The Pipeliner Model 201 device is-no longer manufactured or

' distributed by Gamma Industries,'Inc."and Gamma-Industries, Inc. L isino longer'in-business. Therefore,'-the registration certificate'islbeing converted to'an inactive registration certificate'.

The. device was. originally approved for= licensing purposes by the Louisiana Division of Radiation Control. 1NRC attempted to obtain q copies of all.information submitted by the' registrant in support 1 of the evaluation. However, NRC'could not locate all the I

-information. Therefore', no' safety evaluation of the. device was

. performed'as~.part'of the conversion of:the' certificate-to ,

inactive 1 status. ,

. ISSUING AGENCY:

U.S. . Nuclear Regulatory Commission ,,

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Date: 2 1 1998 Reviewer: _

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/ John W. Lubinski I l999 Date: Concurrence: 7 & / M I/n m o Michele L. Burghss j 1

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