Text

Registry of Radioactive Sealed Sources & Devices,Safety Evaluation of Fluid Beta Irradiator for Model 3M1B. Certificate:NR-460-S-883-S
	ML20247R648
Person / Time
Issue date:	01/26/1996
From:	Steven Baggett, Broaddus B; NRC
To:	;
Shared Package
ML20247R653	List: ML20247R648; ML20247R717; ML20247R840; ML20247R882; ML20247R946; ML20248B911;
References
	SSD, NUDOCS 9805290193
	Download: ML20247R648 (16)
	v • d • e

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HD_1 NR-460-D-883-S

.DATE: January 26, 1996

-PAGE 1'OF 6 DEVICE" TYPE:- Fluid Beta Irradiator MODEL:

3M1B MANUFACTURER / DISTRIBUTOR:

3M~ Health Physics Services 3M Center, Building 224-2E-06 St. Paul, MN 55144-1000 SEALED SOURCE MODEL DESIGNATION:

3M Radiating Microspheres ISOTOPE:

MAXIMUM ACTIVITY:

Strontium-90/ Yttrium-90 500.0 curies (18.50 TBq)

> LEAK TEST FREOUENCY:

6 Months PRINCIPAL USR;.-

(T) Other CUSTOM DEVICE:

YES X

NO 9905290193 960126 PDR RC

. _ _ _ _ _ - _ _ _ = _

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-883-S DATE: January 26, 1996 PAGE 2 OF 6 DEVICE TYPE:

Fluid Beta Irradiator DESCRIPTION:

The 3M1B consists of a stainless steel, right circular cylinder measuring 3.500 in. (8.890 cm) in diameter and 4.375 in.

(11.11 cm) long.

The central core, about 1.500 in. (3.810 cm) in diameter, is bored out and fitted with two end plates, each containing thirty-seven 0.188 in. (0.478 cm) diameter holes, spaced symmetrically in the form of a hexagon with 18 holes in the peripheral ring, 12 holes in the second ring, six in the third and one center hole.

These holes are joined with 316 0.188 in. (0.476 cm) outer diameter, stainless steel tubes.

The walls of these tubes are 0.005 in. (0.013 cm) thick.

The end plates are attached and sealed to the tubes by Nichrome-brazing j

in-an inert atmosphere.

The heavy 1.000 in. (2.540 cm) outer walls of the device are ground on each end to accept a gasket and tapped to enable bolting down of the flanged covers.

Each of the covers is fitted with a tube to allow fluids to flow in and out of the device.

The covers, or end plates, are sealed to the body by silver brazing around their circumference.

A hole is drilled and tapped into the side of the device for i

introduction of the Sr-90/Y-90 ceramic microspheres.

These spheres are insoluble in all common reagents, free flowing, and highly suited to the type of irradiator where very small spaces must be filled evenly with the isotope.

To load the device, a brass funnel is threaded into the side hole and the microspheres are poured in with vibration and tilting of the device to insure complete filling of the spaces around the tubes.

The funnel is then removed from the filling hole, and a threaded SS-316 stainless steel plug is inserted, and the hole is then brazed closed.

The device is shipped:and used in a hard rolled steel shield approximately 4.250 in. (10.80 cm) thick on the sides and 5.750 in. (14.61 cm) thick at the top and bottom of the device.

The shield is made of four pieces held together by machined l

interlocking grooves and six nut and bolt combinations extending L

lengthwise through the shield.

A port is provided in the side of the shield at the top and bottom for the irradiator inlet and outlet tubes.

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE l'

i HQ&i1NR-460-D-883-S DATE: January 26, 1996 PAGE'1 OF 6 i

DEVICE' TYPE:

Fluid Beta Irradiator DIAGRAM:

See Attachment 1 LABELING:

The device and its shield are labeled with the following in magenta on a yellow background:

CAUTION RADIOACTIVE MATERIAL Radiation Symbol Model Ser. No.

Isotopes mc Date Minn. Mining & Mfg.'Co.

St. Paul, Minn..

CONDITIONS _pf NORMAL USE:

3M stated that the'3M1B beta irradiator was designed for use in

.the radiation processing of liquid or gaseous product streams, usually on a laboratory scale.

The' manufacturer has not indicated the distribution of any type of instruction ~ sheet or operating manual to guide the customer in the use'of;this piece of equipment.

Therefore, the. conditions of use,and.the procedures for use of;the device will have to be evaluated on an individual basis for each shipment.

l

.E.ROTOTYPE TESTING:

j

.An irradiator containing no radioactive material was subjected to the following. prototype tests:

l

11. Heat to 1,200*F (649'C) for 1 nour and then perform a nitrogen pressure test.

The nitrogen pressure test involves

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immersing tne device in water and then pressurizing the i

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l PEGISTRY OF RADIOACTIVE SEALED SOURCES AND DEC.UES SAFETY EVALUATION OF DEVICE l'

FO.: NR-460-D-883-S DAIEi January 26, 1996 PAGE 4 OF 6 DEVICE TYPE:

Fluid Beta Irradiator PROTOTYPE TESTING: (2cntinued) device to 1,000 psi (6.895 MPa) with nitrogen gas, and checking for any bubbles escaping from the device.

2.

Drop from a height of 3.000 ft. (93.44 cm) onto a concrete surface 6 times in a random manner, and then perform the nitrogen pressure test.

1 EXTERNAL _ RADIATION LEVEL'.41 3M reported the following radiation dose rates for a device loaded with 120.0 Ci (4.440 TBq) inside its shield at various distances from the surface:

1 Distance From Surface Dose Rate Lpeation inches (cm) mr/hr (usv/hr)

Top and 0

(0) 10 (100)

Bottom 12 (30.48) 1.5 (15)

Sides 0

(0) 20 (200) i 12 (30.48) 3 (30)

OUALITY ASSURANCE AND CONTROL:

The following quality control procedures were followed during fabrication of this device:

1.a.

Irradiators containing no radioactive material were inmersec in water and pressurized to 1,000 psi (6.895 MPa) with nitrogen. -The irradiator was observed for bubbles.

b. The irradiator was then pressurized to 1,000 psi (6.895 MPa) with water, and then observed for leaks.

2.

Completed devices were bubble tested in water at 200'F (93.3 C*).

1' 1

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

i HQ21 NR-460-D-883-S DATE: January 26, 1996 PAGE 5 OF 6 DEVICE TYPE:

Fluid Beta Irradiator OUALITY ASSURANCE AND CONTROL: (Continued) 3.

Each device was checked for contamination immediately after fabrication, again after n'seven day interval, and a third time immediately prior to shipment.

The test detection i

limit was 0.0005 microcurie (18.50 Bq) of activity.

LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USJi

{

J This device may.be use'd only by persons specifically licensed by the NRC or an Agreement State.

Handling, storage, use, transfer, and disposal:

to be determined by the licensing authority.

The 3M1B irradiator shall be leak tested at intervals not to exceed 6 months using techniques capable of detecting 0.005 microcurie (185.0 Bq) of removable contamination.

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

SAFETY ANALYSIS

SUMMARY

The Model.3M1B irradiator is not a current product manufactured.

4 or distributed by 3M Health Physics Services.. However, 3M Health Physics Services will continue to receive Model 3M1B irradiators for disposal.

Based on our review of the'Model 3M1B irradiator, and the information and test data cited below, we continue to conclude that this device is acceptable for specific licensing purposes.

Furthermore, we continue to conclude that the Model 3M1B irradiator would be' expected to maintain its containment integrity for normal conditions of use and accidental conditions which might. occur during uses specified in this certificate.

4

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F.EGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-883-S DATE: January 26.,

1996 PAGE 6 OF 6 DEETCE TYPE: -Fluid Beta Irradiator

REFERENCES:

The following supporting documents for the Model 3M1B are hereby incorporated by reference and are made a part of this registry document:

3M Health Physics Services' letters dated August 6,

1991, January 6, 1965, December 17, 1964, November 10, 1964, and August 27, 1964, with enclosures thereto ISSUING AGENCY:

U.S.

Nuclear Regulatory Commission Date:

January 26. 1996 Reviewer:

/I b 6ou l'as A.

Broaddus Date:

January 26, 1996 Concurrence:

Steven L.

Baggett u

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February 12, 1996 NOTE TO:

MINNESOTA MINING AND MANUFACTURING (3M) INACTIVE FILES h

FROM:

SUBJECT:

-INACTIVATION OF REGISTRATIONS BASED ON AUGUST 6, 1991, LETTER.

A number of.the background files for the registration certificates. requested (by 3M letter dated August 6, 1991) to be made inactive contain limited information on the products.- A search of 3M registration,' archive, and license files, and information in NUDOCS was performed to obtain additional information. Also, 3M was contacted to.obtain any additional information that -

may have.been in their files. 3M provided limited additional information concerning these products and indicated that the information provided represented all additional information in their files. Additional information obtained from these' sources has been added to the applicable registration files.

At.the present time, the information contained in the' background registration files' represents all available information for these products.

In addition, a number of these products were originally. reviewed and approved by the Atomic Energy Commission (AEC).

The reviews performed for these products to make the certificates inactive were based on the information available, the previous:

reviews and approvals, and the historical use of the products ~(i.e., reports of failures or design problems, or the lack thereof).

In several instances, insufficient information was available to perform an adequate safety review.

In these instances, the certificates have been reissued based solely on the original AEC review and approval, and no additional safety review was performed.

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8 February 29, 1996 Robert G. Wissink 3M Health Physics Services 3M Center Bldg. 224-2E-06 St. Paul, MN 55144-1000

Dear Mr. Wissink:

This letter is in response to your request dated August 6, 1991, and subsequent letters, requesting to transfer to inactive status all registration sheets issued to 3M as listed in the first column of Enclosure 1.

We have transferred the requested certificates to inactive status. The certificate numbers have been changed as listed in Enclosure 1.

Copies of the inactive certificates are enclosed for your records.

Please read over the registration certificates and notify us immediately if there are any errors or inconsistencies.

If you have any questions, please contact me at (301) 415-5847 or Mr. Steven Baggett at (301) 415-7273.

Sincerely,

/3/

Douglas A. Broaddus, Mechanical Engineer Sealed Source Safety Section Source Containment and Devices Branch Division of Industrial and Medical Nuclear Safety, NMSS

Enclosures:

As stated Distribution:

SSSS R/F NE01 SSD-91-71 Registration certificate files listed in Enclosure'l DOCUMENT NAME: C:

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ENCLOSURE I REGISTRATIONS TRANSFERRED TO INACTIVE STATUS Old Certificate No.

New Certificate No.

Model Number (s)

NR-459-S-101-S NR-8008-S-801-S 4F6Y NR-459-S-102-S NR-8008-S-802-S 3 FIG NR-460-S-101-S NR-0460-S-875-S 4F6D NR-460-S-102-S COMBINED WITH 4F6H, 4F6B NR-0460-S-874-S NR-460-S-103-5 NR-0460-S-876-S 4F6G NR-460-S-104-S COMBINED WITH 6D6A NR-0460-S-865-S NR-460-S-105-S NR-0460-S-877-S 6B6F NR-460-S-106-S NR-0460-S-878-S 4F6P NR-460-S-107-S HR-0460-S-879-S 1C2A, IC2B NR-460-S-108-S NR-0460-S-880-S 4F3B NR-460-S-109-S NR-0460-S-881-S 4F3C j

NR-460-S-110-S NR-0460-S-882-S 3MIC NR-460-S-111-S NR-0460-S-883-S 3M1B NR-460-S-Il2-S NR-0460-S-884-S 3E4G NR-460-S-Il3-S NR-0460-S-885-S 403A NR-460-S-Il4-S NR-0460-S-886-S 403B NR-460-S-115-S NR-0460-S-887-S 406D NR-460-S-116-S NR-0460-S-888-S 4D6F NR-460-S-117-S NR-0460-S-889-S 5FID NR-460-S-118-S COMBINED INTO 5FIE

~~

NR-460-S-Il9-S 5FIF NR-460-S-120-S NR-0460-S-891-S 5 FIG NR-460-S-121-S NR-0460-S-892-S 3L2B NR-460-S-122-S NR-0460-S-893-S 3L2A l

NR-460-S-123-S NR-0460-S-894-S 3M1F NR-460-S-124-S NR-0460-S-895-S 3L2C

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ENCLOSURE 1 REGISTRATIONS TRANSFERRED TO INACTIVE STATUS I

Old Certificate No.

New Certificate No.

Nodel Number (s)

NR-460-S-125-S NR-0460-S-896-S lE2J l

NR-460-S-126-S NR-0460-S-897-S 3 FIG NR-460-S-127-S N0hE - NO INFORMATION 4FIE AVAILABLE j

l NR-460-S-128-S NR-0460-S-899-S 5FIH NR-460-S-129-S NR-0460-S-900-S 3E40 NR-460-S-130-S COMBINED INTO SFIN NR-460-S-131-S NR-0460-S-901-S 5 FIN (MODIFIED)

NR-460-S-132-S NR-0460-S-902-S 788L

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1 NR-460-S-133-S COMBINED INTO 6H6A l

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NR-460-S-134-S 6H68 NR-460-S-135-S NR-0460-S-904-S 4D6M j

NR-460-S-136-S NR-0460-S-905-S 3L2E NR-460-S-137-S NR-0460-S-906-S 6500, 6520 (FORM, 6D60) l NR-460-S-138-S NR-0460-S-907-S SL2D NR-460-S-139-S NR-0460-S-908-S 3QlD NR-460-S-140-S NR-0460-S-909-S 3E4L, 3E45 NR-460-S-141-S NR-0460-S-910-S 3 FIR NR-460-S-142-S NR-0460-S-911-S 902, 902F, 903 NR-460-S-143-S COMBINED WITH 4P6E l

NR-0460-S-871-S NR-460-S-144-S COMBINED WITH 4P6M NR-0460-S-872-S NR-460-S-145-S NR-0460-S-912-S 3Mll NR-460-S-146-S NR-0460-S-913-S 3G9A NR-460-S-147-S NR-0460-S-914-S 3B4G NR-460-S-148-S COMBINED WITH 4F3F NR-0460-S-871-S NR-460-S-149-S NR-0460-S-915-S 4F3G

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ENCLOSURE 1 REGISTRATIONS TRANSFERRED TO INACTIVE STATUS Old Certificate No.

New certificate No.

Model Number (s)

I NR-460-S-150-S NR-0460-S-916-S 6DIA NR-460-S-151-S COMBINED WITH 6530, 6540 (FORM. 6B6G)

NR-0460-S-869-S NR-460-S-152-S NR-0460-S-917-S 6H6D NR-460-S-153-S NOT REQUIRED ALBUMIN MICR0 SPHERES NR-460-S-154-S NR-0460-S-919-S 6H6E, 8C9T l

NR-460-S-155-S COMBINED INTO 4D6L

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NR-460-S-156-S 4D6P NR-460-S-158-S NR-0460-S-921-S 3F11, 3F1J, 3FIL NR-460-S-159-S NR-0460-S-922-S 3F1V NR-460-S-160-S COMBINED WITH 4P6T NR-0460-S-873-S NR-460-S-161-S COMBINED INTO 4F3D NR-0460-S-920-S NR-460-S-162-S NR-0460-S-923-S 4F3H NR-460-S-163-S COMBINED INTO 4F6S NR-0460-S-920-S NR-460-S-164-S COMBINED WITH 3E40 NR-0460-S-900-S NR-460-S-165-S NR-0460-S-924-S 6701 NR-460-S-166-S NR-0460-S-925-S 6702 NR-460-S-167-S NR-0460-S-926-S 6711 NR-460-S-168-G NR-0460-S-927-G 702, 703, 704 NR-460-S-169-S NR-0460-S-928-S 6510, 6550, 6570 (FORMERLY 6B6G)

NR-460-S-170-S NR-0460-S-929-S 4P6V NR-460-S-171-S NR-0460-S-930-S 4F6ST 1

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

'5 NO.: NR-460-D-1

-S DATE:

PAGE 1 OF 6 DEVICE TYPE:

Fluid Beta Irradiator MODEL:

3M1B MANUFACTURER / DISTRIBUTOR:

3M Health Physics Services 3M Center, Building 224-2E-06 St. Paul, MN 55144-1000 SEALED SOURCE MODEL DESIGNATION:

3M Radiating Microspheres ISOTOPE:

MAXIMUM ACTIVITY:

Strontium-90/ Yttrium-90 500.0 curies (18.50 TBq)

LEAK TEST FREOUENCY:

6 Months PRINCIPAL USE:

(T) Other l

CUSTOM DEVICE:

YES X

NO Revision 1, November 20, 1995 G:\\SSSS\\NR460111.SSD l

L

I l

REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-$1{-S DATE:

PAGE 2 OF 6 DEVICE TYPE:

Fluid Beta Irradiator DESCRIPTION:

The 3MiB consists of a stainless steel, right circular cylinder measuring 3.500 in. (8.890 cm) in diameter and 4.375 in.

(11.11 cm) long.

The central core, about 1.500 in. (3.810 cm) in diameter, is bored out and fitted with two end plates, each containing thirty-seven 0.188 in. (0.478 cm) diameter holes, spaced symmetrically in the form of a hexagon with 18 holes in the peripheral ring, 12 holes in the second ring, six in the third and one center hole.

These holes are joined with 316 0.188 in. (0.476 cm) outer diameter, stainless steel tubes.

The walls of these tubes are 0.005 in. (0.013 cm) thick.

The end plates are' attached and sealed to the tubes by Nichrome-brazing in an ine';t atmosphere.

The heavy 1.000 in. (2.540 cm) outer walls of the device are ground on each end co accept a gasket and tapped to enanle bolting down of the flanged covers.

Each of the covers is fitted with a tube to al)ow fluids to flow in and out of the device.

The covers, or end plates, are sealed to the body by silver brazing around their circumference.

A hole is drilled and tapped into the side of the device for introduction of the Sr-90/Y-90 ceramic microspheres.

These spheres are insoluble in all common reagents, free flowing, and highly suited to the type of irradiator where very small spaces must be filled evenly with the isotope.

To load the device, a brass funnel is threaded into the side hole and the microspheres are poured in with vibration and tilting of the device to insure complete filling of the spaces around the tubes.

The funnel is then removed from the filling hole, and a threaded SS-316 stainless steel plug is inserted, and the hole is then brazed closed.

The device is chipped and used in a hard rolled steel shield approxitnately 4.250 in. (10.80 cm) thick on the sides and l

5.750 in (14.61 cm) thick at the top and bottom of the device.

The shield is made of four pieces held together by machined interlocking grooves and six nut and bolt combinations extending lengthwise tnrough the shield.

A port f.s provided in the side of the shield at the top and bottom for the irradiator inlet and outlet tubes.

I 1

Revision 1, November 28, 1995 G:\\SSSS\\NR460111.SSD i

o, REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO,;NR-460-D-[il-S DATE:

PAGE 3 OF 6 DEVICE TYPE:

Fluid Beta Irradiator DIAGRAM:

See Attachment 1 LABELING:

The device and its shield are labeled with the following in magenta on a yellow background:

CAUTION RADIOACTIVE MATERIAL Radiation Symbol Model Ser. No.

Isotopes mc Date Minn. Mining & Mfg. Co.

St. Paul, Minn.

CONDITIONS OF NORMAL USE:

3M stated that the 3M1B beta irradiator was designed for use in the radiation processing of liquid or gaseous product streams, ucually on a laboratory scale.

The manufacturer has not indicated the distribution of any type of instruction sheet or operating manual to guide the customer in the use of this piece of equipment.

Therefore, the conditions of use and the procedures for use of the device will have to be evaluated on an individual basis for each shipment.

PRGTOTYPE TESTING:

An irradiator containing no radioactive material was subjected to the following prototype tests:

1.

Heat to 1,200*F ( 64 9 'C) for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and then perform a nitrogen pressure test.

The nitrogen pressure test involves immersing the device in water and then pressurizing the Revision 1, November 20, 1995 G:\\SSSS\\NR460111.SSD

REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO,: NR-460-D-Klf-S DATE:

PAGE 4 OF 6 DEVICE TYPE:

Fluid Beta-Irradiator j

PROTOTYPE TESTING: (Continued) device to 1,000 psi (6.895 MPa) with nitrogen gas, and checking for any bubbles escaping from the device.

2. Drop from a height of 3.000 ft. (91.44 cm) onto a concrete surface 6 times in a random manner, and then perform the nitrogen pressure test.

EXTERNAL RADIATION LEVELS:

3M reported the following radiation dose rates for a device loaded with 120.0 Ci (4.440 TBq) inside its shield at various distances from the surface:

Distance From Surface Dose Rate Location inches (cm) mr/hr (uSv/hr)

Top and 0

(0) 10 (100)

Bottom 12 (30.48) 1.5 (15)

Sides 0

(0) 20 (200) 12 (30.48) 3 (30)

OUALITY ASSURANCE AND CONTROL:

The following quality control procedures were followed during fabrication of this device:

1.a.

Irradiators containing no radioactive material were immersed in water and pressurized to 1,000 psi (6.895 MPa) with

. nitrogen.

The irradiator was observed for bubbles.

b. The irradiator was then pressurized to 1,000 psi (6.895 MPa) with water, and then observed for leaks.

2.

Completed devices were bubble tested in water at 200 F (93.3 Co).

Revision 1, November 20, 1995 G:\\SSSS\\NR460111.SSD l

i

REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NC.- NR-460-D-111-S DATE:

PAGE 5 OF 6 DEVICE TYPE:

Fluid Beta Irradiator OUALITY ASSURANCE AND CONTROL: (Continued) 3.

Each device was checked for contamination immediately after fabrication, again after a seven day interval, and a third i

time immediately prior to shipment.

The test detection limit was 0.0005 microcurie (18.50 Bq) of activity.

1

)

LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:

I

This device may be used only by persons specifically licensed by the NRC or an Agreement State.

Handling, storage, use, transfer, and disposal:

to be determined by the licensing authority.

l

The 3M1B irradiator shall be leak tested at intervals not to exceed 6 months using techniques capable of detecting i

0.005 microcurie (185.0 Bq) of removable contamination.

l i

This registration sheet and the information within the references shall not be changed without written consent from j

the NRC.

SAFETY ANALYSIS

SUMMARY

The Model 3M1B irradiator is not a current product manufactured or distributed by 3M Health Physics Services.

However, 3M Health Physics Services will continue to receive Model 3M1B irradiators for disposal.

Based on our review of the Model 3M1B irradiator, and the information and test data cited below, we continue to conclude that this device is acceptable for specific licensing purposes.

Furthermore, we continue to conclude that the Model 3M1B irradiator would be expected to maintain its containment integrity for normal conditions of use and accidental conditions which might occur during uses specified in this certificate.

l Revision 1, November 20, 1995 G:\\SSSS\\NR460111.SSD u

REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-yT-S DATE:

PAGE 6 OF 6 REVICE TYPE:

Fluid Beta Irradiator

REFERENCES:

The following supporting documents for the Model 3M1B are hereby incorporated by reference and are made a part of this registry document:

3M Health Physics Services' letters dated August 6,

1991, January 6, 1965, December 17, 1964, November 10, 1964, and August 27, 1964, with enclosures thereto ISSUING AGENCY:

U.S.

Nuclear Regulatory Commission Date:

Reviewer:

Thomas W.

Rich Date:

Concurrence:

Steven L.

Baggett i

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Revision 1, November 20, 1995 G:\\SSSS\\NR460111.SSD 1

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-111l-S DATE-ATTACHMEN D l

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Revision 1, November 20, 1995 G:\\SSSS\\NR460111.SSD i

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e REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-111~-S DATE:

PAGE 1 OF 6 DEVICE TYPE:

Fluid r"adiator MODEL:

3M1B MANUFACTURER /DISTRI9UTOR:

3M Health Physics Services 3M Center, Building 224-2E-06 St. Paul, MN 55144-1000 SEALED SOURCE MODEL DESIGNATION:

3M Radiating Microspheres ISOTOPE:

MAXIMUM ACTIVITY:

Strontium-90/ Yttrium-90 500 curies (18.5 TBq) i l

4 LEAK TEST FREOUENCY:

6 Months l

PRINCIPAL USE:

(T) Other CUSTOM DEVICE:

YES X

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO,;. NR-460-D-111-S DAIE1 PAGE 2 OF 6 DEVICE TYPE:

Fluid 'Irradiator DESCRIPTION The 3M1B consists of a atainless steel, right circular cylinder g,&

measuring 3.5 in. (8.9 cm) in diameter and 4.4 in. (11.1 cm)

SF long.

The central core, about 1.5 in. (3.81 cm) in diameters /is spaced symmetrically in the(31 0.19p"h ^*g bored out and fitted with two end plates, each containing in. (0.48 cm) diameter holes, form of f"

a hexagon with 18 holes in the peripheral ring, 12 holes in the second ring, 6 in the third and one center hole.

These holes are joined with 316 stainless steel tubes 0.19 in. (0.48 cm) in outer diameter.

The walls of these tubes are 5 mils (0.01 cm) thick.

The end plates.are attached and sealed to the tubes by Nichrome-brazing in an inert atmosphere.

The heavy 1 in. (2.54 cm) outer walls of the device are ground on each end to accept a gasket and tapped to enable bolting down of the flanged covers.

Each of the covers is fitted with a tube to allow fluids to flow in and out j

of the device.

The covers, or end plates, are sealed to the body by silver brazing around their circumference.

ve4s

{I{s,.j A hole, drilled and tapped into the side of the device for introduction of the Sr-90/Y-90 microspheres, is plugged with a threaded type-316 stainless steel plug and sealed by welding.

u Ap n.c onw The device is shipped and used in a, steel shield 4.25 in.

J (10.8 cm) thick on the sides and 5.75 in. (14.6 cm) thick at the<

i top and bottom of the device.

Theshieldismadeoffourpieces(

held together by machined interlocking grooves and six nut and

(

bolt combinations extending lengthwise through the shield.

A 3

port is provided in the side of the shield at the top and bottom,)

for the irradiator inlet and outlet tubes.

DIAGRAM:

See Attachment 1

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REGISTRY OF RADIOACTIVE SEALED SOURCES.AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-1111-S DATE:

PAGE 3 OF 6 DEVICE TYPE:

Fluid Irradiator LABELING:

The device and its shield are labeled with the following in magenta on a yellow background:

CAUTION RADIOACTIVE MATERIAL Radiation Symbol Model Ser. No.

Isotopes mc Date Minn. Mining & Mfg. Co.

St. Paul, Minn.

CONDITIONS OF NORMAL USE:

3M stated that the 3M1B beta irradiator was designed for use in the radiaticn processing of liquid or gaseous product streams, usually on a laboratory scale.

The manufacturer has not indicated the distribution of any type of instruction sheet or operating manual to guide the customer in the use of this piece of equipment.

Therefore, the conditions of l

use and the procedures for use of the device will have to be

{

evaluated on an individual basis for each shipment.

PROTOTYPE TESTING:

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san &'*3

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In addit-ion o-the-norma l qualit-y.-control-testsy An unfueled-irradiatog was subjected to the following prototype tests:

1.

Heat to 1,200 F (649'C) for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and then perform a I

nitrogen pressure test, The nitrogen pressure test involves immersing the device in water and then pressurizing the device to 1,000 psi (6.9 MPa) with nitrogen gas, and checking for any bubbles escaping the device.

2.

Drop from a height of 3 ft. (91.44 cm) onto a concrete surface 6 times in a random manner, and then perform the nitrogen pressure test.

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6 REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-460-D-111-S DATE:

PAGE 4 OF 6 DEVICE TYPE:

Fluid Irradiator EXTERNAL RADIATION LEVELS:

3M reported the following radiation dose rates for a device loaded with 120 Ci (4.44 TBq) inside its shield at various distances from the 36GbH8:

Distance From S$d Ye Dose Rate Location inches (cm) mr/hr (usv/hr)

Top and 0

(0) 10 (100)

Bottom 12 (30.48) 1.5 (15)

Sides 0

(0) 20 (200) 12 (30.48) 3 (30)

OUALITY ASSURANCE AND CONTROL:

The following quality control procedures were followed during j

fabrication of this device:

l

,4;e.g ~ u h was w ~k:A 1.a. The-unfueled-Irradiator5w M immersed in water and pressurized to 1,000 psi (6.9 MPa) with nitrogen.

The irradiator was observed for bubbles.

b. The unfue4-ed irradiator was"p^ressurized to 1,000 psi (6.9 MPa) with water, and then observed for leaks.

2.

The-6ompleted device 5 wSE bubble tested in water at 200 F (93.3 C).

$3NSdevicewascheckedforcontaminationimmediatelyafter 3.

fabrication, again after a seven day interval, and a third time immediately prior to shipment.

The test detection I

limit was 0.0005 microcurie (18.5 Bq) of activity.

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LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:

This device (hh been distributed only to persons specifically licensed by the NRC or an Agreement State.

Handling, storage, use, transfer, and disposal:

to be determined by the licensing authority.

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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES l

SAFETY EVALUATION OF 9EVICE I

l NO,: NR-460-D-$y%-S DAIE1

.PAGE 5 OF 6 DEVICE TYP81 Fluid Irradiator LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE: (Continued)

The 3M1B irradiator shall be' leak tested at intervals not to exceed 6 months using techniques capable of detecting 0.005 l

microcurie (185 Bq) of removable contamination.

This. registration sheet and the information within the e

references shall not be changed without written consent from the NRC.

SAFETY ANALYSIS

SUMMARY

The Model 3M1B irradiator is not afcurrent product manufactured or distributed by 3M Health Physics Services.

However, 3M Health Physics Services will still' handle 3M1B irradiators for disposal.

Based on our review of the Model 3M1B irradiator,_and the information and te t data cited below, we continue to conclude that this device a acceptable for specific licensing purposes.

Furthermore, we continue to conclude that the Model 3M1B

'irradiator would be expected to maintain its containment integrity for normal conditions'of use and accidental conditions which might occur during uses specified in this certificate.

REFERENCES:

The following supporting documents for the Model 3M1B are hereby incorporated by reference and are made a part of this registry document:

3M-Health Physics Services' letters dated August 6,

1991, January.6, 1965, December 17, 19 6 4 ~, November 10, 1964, and August 27, 1964, with enclosures thereto l

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' REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO,: NR-4 6 0 - D-[1'1l'- S DATE:

PAGE 6 OF 6 DEVICE TYPE:

Fluid Irradiator ISSUING AGENCY:

U.S.

Nuclear Regulatory Commission Date:

Reviewer:

Thomas W.

Rich Date:

Concurrence:

Steven L. Baggett

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

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NO.- NR-460-D-111-S DATE:

ATTACHMENT 1, e

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ML20247R648

Contents

Text

SUMMARY

REFERENCES:

SUBJECT:

Dear Mr. Wissink:

Enclosures:

SUMMARY

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SUMMARY

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ML20247R648

Text

SUMMARY

REFERENCES:

SUBJECT:

Dear Mr. Wissink:

Enclosures:

SUMMARY

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SUMMARY

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