ML20247R296: Difference between revisions
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==SUBJECT:== | ==SUBJECT:== | ||
INACTIVATION OF REGISTRATIONS BASED ON AUGUST 6, 1991, LETTER. | 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 | A number of the background files for the registration certificates requested (by 3M {{letter dated|date=August 6, 1991|text=letter dated August 6, 1991}}) to be made inactive contain limited | ||
.information on the products. A search of 3M registration, archive, and l license files, and information in NUDOCS was performed to obtain additional i information. Also, 3M was contacted to obtain any additional information that may have been in their files. 3M provided limited additional information , | .information on the products. A search of 3M registration, archive, and l license files, and information in NUDOCS was performed to obtain additional i 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 ' | concerning these products and indicated that the information provided ' | ||
Latest revision as of 16:48, 8 March 2021
| ML20247R296 | |
| Person / Time | |
|---|---|
| Issue date: | 01/26/1996 |
| From: | Steven Baggett, Doug Broaddus NRC |
| To: | |
| Shared Package | |
| ML20247R301 | List: |
| References | |
| SSD, NUDOCS 9805290111 | |
| Download: ML20247R296 (7) | |
Text
{{#Wiki_filter:l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE (AMENDED IN ITS ENTIRETY) l NO.; NR-460-S-871-S DATE: January 26, 1996 PAGE 1 OF 6 j i SEALED SOURCE TYPE: Gamma Source MODEL: 4P6E and 4F3F 1 l I MANUFACTURER / DISTRIBUTOR: 3M Health Physics Services 3M Center, Building 224-2E-06 ! St. Paul, MN 55144-1000 l ISOTOPE: MAXIMUM ACTIVITY: Cesium-137 2.000 curies (74.00 GBq) (4P6E) Cobalt-60 200.0 mci (7.400 GBq) (4F3F) , l l l LEAK TEST FREOUENCY: 6 Months I i l i l PRINCIPAL USE: (D) Gamma Gauge l CUSTOM SOURCE: YES X NO i l 9905290111 960126 PDR RC {j SSO PDR
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE (AMENDED IN ITS ENTIRETY) HQui NR-460-S-871-S DATE: January 26, 1996 PAGE 2 OF 6 i
-SEALED SOURCE TYPE: Gamma Source DESCRIPTION 1 The Model 4P6E is a doubly-encapsulated source. Cesium-137 (Cs-137) is absorbed into small ceramic particles using a heat l treatment to create 3M Brand Radiating Microspheres. The microspheres are loaded into a 0.620 in. (1.575 cm) long, i 0.200 in. (0.508 cm) outer diameter, 0.156 in. (0.396 cm) nominal l inner diameter capsule with a 0.025 in. (0.064 cm) thick wall j across one end. There is a 0.008 in. (0.020 cm) wide ledge around the outside of the capsule 0.030 in. (0.076 cm) from the free end. After the microspheres are loaded, a nominally 0.157 in. (0.399 cm) diameter, 0.100 in. (0.254 cm) thick inner plug'is inserted into the capsule and TIG welded in place, i sealing the microspheres inside. '
l The entire inner assembly is then inserted, plug end facing out, into a 0.750 in. (1.905 cm) long, 0.280 in. (0.711 cm) outer diameter,'O.210 in. (0.533 cm) nominal inner diameter capsule with a 0.025 in. (0.064 cm) thick wall across one end. After
-inserting the inner assembly, a 0.211 in. (0.536 cm) diameter, 0.100 in. (0.254 cm) thick outer plug is inserted and TIG welded
.in place, sealing the inner assembly inside. Both capsules and both plugs are made from type 304 stainless steel.
The Model 4F3F sealed source is identical in construction to the Model 4P6E sealed source. The only difference is the use of j Co-60 in the Model 4F3F source instead of Cs-137. I i DIAGRAM: See Attachment 1 for a drawing of the 4P6E source. No specific diagram was available for 4F3F, but 3M indicated that the construction of the Model 4F3F was identical to the 4P6E except for the use of Co-60 instead of Cs-137. i . i l l l
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE (AMENDED IN ITS ENTIRETY) NO.: NR-460-S-871-S DATE: January 26, 1996 PAGE 3 OF 6 SEALED SOURCE TYPE: Gamma Source LABELING: J The sides of the outer capsules of both sources are engraved with the serial number, isotope, and activity (in mci) of the source. CONDITIONS OF NORMAL USE: I The Model 4P6E and the Model 4F3F sources were designed primarily i for gauging applications. They are normally installed in the gauging devices by the gauge manufacturer. PROTOTYPE TESTING: ) i A prototype of the Model 4P6E source was subjected to the l temperature, external pressure, and impact tests according to the ; specifications of ANSI N542-1977. An engineering evaluation was ' performed on the 4P6E design to check for vibration and puncture criteria of the ANSI N542-1977 standard. On the basis of the test and evaluation data, the Model 4P6E source was assigned a classification of 77C66545. 3M reported that since the Model 4F3F source was identical in I construction to the 4P6E, all test methods performed on the 4P6E and their results should apply to the 4F3F. I EXTERNAL RADIATION LEVELSi ! The following radiation dose rates at various distances from a l 2.000 Ci (74.00 GBq) Model 4P6E source were calculated: Distance from source Dose rate inches (cm) mr/hr (mSv/hr) l 1.969 (5) 341,136 (3,411.36) 11.81 (30) 9,476 (94.76) 39.37 (100) 852 (8.52) 1
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE (AMENDED IN ITS ENTIRETY) NO.: NR-460-S-871-S DATE: January 26, 1996 PAGE 4 OF 6 SEALED SOURCE TYPE: Gamma Source EXTERNAL RADIATION (Continued) Also the following external radiation dose rates were calculated for a 200.0 mci (7.400 GBq) Co-60 source: Distance from surface Maximum Radiation Level inches (cm) R/hr (Sv/hr) I j 1.97 (5) 107.7 (1.077) I 11.81 (30) 2.99 (0.030) 39.37 (100) 0.269 (0.003) OUALITY ASSURANCE AND CONTROL: The following quality control procedures were followed during production of these sources:
- 1. The inner capsule was wipe tested after the inner p)ug was TIG welded in place. The maximum allowable amount of ,
detectable contamination was 0.0005 Ci (18.50 Bq) of ! removable contamination. i
)
- 2. The inner capsule was subjected to a bubble leak test by submersing it in glycerine at 302*F (150'C). If any bubbles 1 were observed coming from the capsule during the test, the capsule was rejected.
- 3. The completed source was subjected to a bubble leak test as in procedure 2, above.
l
- 4. The completed source was wipe tested after fabrication and again prior to shipment, using the same technique and leak test limit as in procedure 1, above.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
- These sources may be used only by persons specifically licensed by the NRC or an Agreemtnt State.
- Handling, storage, use, transfer, and disposal: to be determined by the licensing authority.
l . I I REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE ( AMENDED IN ITS ENTIRETY) l NO.: NR-460-S-871-S DATE: January 26, 1996 PAGE 5 OF 6 j SEALED SOURCE TYPEL Gamma Source l LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE: (continued) These sources shall not be subjected to environmental or other conditions of use which would exceed ANSI N542-1977 Classification 77C66545. l These sources shall be leak tested at intervals not to . exceed 6 months using techniques capable of detecting l 0.005 4Ci (185.0 Bq) of removable contamination. '
- This registration sheet and the information contained within )
the references shall not be changed without the written l consent of the NRC. I 1 i i SAFETY ANALYSIS
SUMMARY
The Model 4P6E and the Model 4F3F sources are not current products manufactured or distributed by 3M Health Physics ! Services. However, 3M Health Physics Services will continue to ' receive Models 4P6E and 4F3F sources for disposal. Based on our review of the Models 4P6E and 4F3F sources, and the information and test data cited below, we continue to conclude that these sources are acceptable for specific licensing purposes. l i Furthermore, we continue to conclude that the Models 4P6E and 4F3F sources would be expected to maintain their containment integrity for normal conditions of use and accidental conditions 1 which might occur during uses specified in this certificate. ;
REFERENCES:
1 The following supporting documents for the Models 4P6E and 4F3F l sealed sources are hereby incorporated by reference and are made a part of this registry document:
- 3M Health Physics Services' letters dated August 15, 1991, December 20, 1990, January 9, 1990, December 27, 1971, and August 15, 1968, with enclosures thereto, i
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE (AMENDED IN ITS ENTIRETY) HQ.a.1 NR-460-S-871-S DATE: January 26, 1996 PAGE 6 OF 6 SEALED SOURCE TYPE: Gamma Source ISSUING AGENCY: U.S. Nuclear Regulatory Commission Date: January 26, 1996 Reviewer: Me b - Do6glas A. Broaddus Date: January 26. 1996 Concurrence: . 8
' Steven L.Taggett
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REGISTRY OF' RADIOACTIVE SEALED SOURCES AND DEVICES
- l. SAFETY EVALUATION OF SEALED SOURCE (AMENDED IN ITS ENTIRETY)
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*****/ February 12, 1996 NOTE TO: MINNES0TA MINING AND MANUFACTURING (3M) INACTIVE FILES FROM: hf
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 l license files, and information in NUDOCS was performed to obtain additional i 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 l files represents all available information for these products. In addition, a ' number of these products were originally reviewed and appruved 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, I 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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4 ,. February 29, 1996 , I Robert G. Wissink i 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 l sheets issued to 3M as listed in the first column of Enclosure 1. We have l 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. 1 If you have any questions, please contact me at (301) 415-5847 or Mr. Steven Baggett at (301) 415-7273. Sincerely,
/s /
Douglas A. Broaddus, Mechanical Engineer l Sealed Source Safety Section Source Containment and Devices Branch Division of Industrial and Medical Nuclear Safety, NMSS
Enclosures:
As stated l 1 Distribution: SSSS R/F . NE01 SSD-91-71 Registration certificate files listed in Enclosure 1 DOCUMENT NA 1 - . ME:.C:\WPDOCS\SSDS\
. . . m: c .c.,, INACTIVE
- - \NRC\460lNACT.
u . v .c.,,CMP. . u r .u... , 0FFICE SCDB lC l l l l NAME DABroaddus DATE 02/27/96 OFFICIAL RECORD COPY ~ u________________._____ - - _ _
ENCLOSURE 1 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-102-5 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, 4F68 NR-0460-S-874-S NR-460-S-103-S 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 NR-0460-S-879-S IC2A, IC2B NR-460-S-108-S NR-0460-S-880-S 4F3B hR-460-S-109-S NR-0460-S-881-S 4F3C NR-460-S-110-S NR-0460-S-882-S 3MIC NR-460-S-111-S NR-0460-S-883-S 3MIB NR-460-S-Il2-S NR-0460-S-884-S 3E4G NR-460-S-Il3-S NR-0460-S-885-S 4D3A q NR-460-S-Il4-S NR-0460-S-886-S 4D3B NR-460-S-Il5-S NR-0460-S-887-S 4D60 j NR-4od-S-116-S NR-0460-S-888-S 406F NR-460-S-117-S NR-0460-S-889-S 5FID NR-460-S-118-S COMBINED INTO 5FIE
~ ~
NR-460-S-119-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 NR-460-S-123-S NR-0460-S-894-S 3Mlf NR-460-S-124-S NR-0460-S-895-S 3L2C l l l t J
ENCLOSURE 1 REGISTRATIONS TRANSFERRED TO INACTIVE STATUS Old Certificate No. New Certificate No. Model Number (s) NR-460-S-125-S NR-0460-S-896-S 1E2J NR-460-S-126-S NR-0460-S-897-S 3 FIG NR-460-S-127-S NONE - NO INFORMATION 4FIE ' AVAILABLE NR-460-S-128-S NR-0460-S-899-S 5F1H , l 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 NR-460-S-133-S COMBINED INTO 6H6A
~ ~~ ~
NR-460-S-134-S 6H68 NR-460-S-135-S NR-0460-S-904-S 4D6M NR-460-S-136-S NR-0460-S-905-S 3L2E NR-460-S-137-S NR-0460-S-906-S 6500, 6520 (FORM. 6060) NR-460-S-138-S NR-0460-S-907-S 3L2D NR-460-S-139-S NR-0460-S-908-S 3Q10 NR-460-S-140-S NR-0460-S-909-S 3E4L, 3E4S 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 l NR-460-S-143-S COMBINED WITH 4P6E l hR-0460-S-871-S NR-460-S-144-S COMBINED WITH 4P6M l NR-0460-S-872-S NR-460-S-145 ,c NR-0460-S-912-S 3 MIL 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 4
ENCLOSURE 1 ) REGISTRATIONS TRANSFERRED TO INACTIVE STATUS i l Old Certificate No. New Certificate No. Model Number (s) 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 NR-460-S-155-S COMBINED INTO 4D6L l
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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 3FIV NR-460-S-160-S COMBINED WITH 4P6T i NR-0460-S-873-S l 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 j NR-460-S-164-S COMBINED WITH 3E40 l 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 l NR-460-S-171-S NR-0460-S-930-S 4F6ST l i}}