ML20247R951
| ML20247R951 | |
| Person / Time | |
|---|---|
| Issue date: | 01/31/1983 |
| From: | Steven Baggett NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Delmedico J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20247R838 | List: |
| References | |
| SSD, NUDOCS 9805290248 | |
| Download: ML20247R951 (14) | |
Text
{{#Wiki_filter:,_ _ __ _-_ _ _ _ _ _ _ - _ - - -- _ _ _ _ _ _ - - _ - _ _ _ _ - - - _ _ - _ _ ___ entral File g l- JAN 3 1 1983 S aggett . MENDRANDUM FOR: JosefADe1 Medico Material Licensing Branch Division of Fuel Cycle and Material Safety NMSS ( l FROM: Steven L. Baggett Material Certification and Procedures Branch Division of Fuel Cycle and l Material Safety, NMSS l
SUBJECT:
MINNESOTA MINING AND MANUFACTURING COMPANY MAIL CONTROL NO. 03701
. Per your request dated December 10, 1982, we have reviewed 3M's application with
[ respect to the update of sealed source / device reviews. We have concluded that-l the sources are still acceptable for licensing purposes. We have formulated new registry sheets free the inforsantion supplied by 3M. We continue to approve the exemption from six month leak test requirements for the series 6500-6520 Cs-137 sources. i ' We have also reviewed Mr. Wright's letter dated July 20, 1981, and the answers provided by 3M in their letter dated September 23, 1981. We conclude that the information contained in the renewal application and this letter have satisfactorily answered Mr. Wright's questions. OdainalS!gned By S16cn L Baggett I
- Steven L. Baggettt Material Certification and
[ Procedures Branch ! Division of Fuel Cycle and Material Safety, NNSS 1 E '1 x l l 'y N ) 9005290248 960126 PDR RC
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. . .- o Dy r FICEIVED: . 12/13/82 SEND To TEES? ,/_f YES Date Sent Date Returned CONTROL NUMBER: .82-86 ,
_/" / No g_-_.-_-_____.--_-____________________..______________________________________._______________c DESCRIPTION OT INCOMING _
~Date of Incoming 9/23/81- Model Number (s) 6701
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To: -1 E. G. Wright .s rm: Frank copeland/ Minnesota Mini 6g and Manufacturing company SU3 JECT: Renewal . >_..._--__...._ ..__-__ _-____-_- ______......__________y_____- ________.::_u______......_:.___.o FIVIEWER: S. L. Baaaett i
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TYPE OF REQUEST: // Certificate /7 Amendment / 7 Custom Reviewi
- - FIF LICENSE NO # 22-00057-59MD MILESTONES
. Date Person,-Hours Request for Resubmission .....................
Daficiency Letter ............................ _ Daficiency Telephone Call .................... Response to-Deficiency .......................
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30_ Day Abandonment Letter . .................. l .:- . . Raquest Denied ............................... .
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Fequest Withdrawn by Applicant................ i
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- 2 C fCq% UtllTED STATES
- n. t UCLEAR REGULATORY COTAMIS 3
,i ,, [- WASWNGTON, D. C. 20L55 l
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Date December 10, 1982 . T0: Material Certification & Procedures Branch, 426-SS
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SU3 JECT: MLB REQUEST FOR MCPB ASSISTN P' RETURN: MLB, 396-SS Control No.: (attached) License No.: 22-00057-59MD (attached) Letter No.: (attached) Assistance requestedi Custom review New source review New device review N- Other(seeramarks) REMARKS: , Catalog has been checked. ~ No informaton is available on the source / device. We are not aware of any specific license which authorizes ' possession and use of this device. , Manufacturer is located in Agreement State. MLB has verified that no device review is completed or pending, and that a custom review is required. Manufacturer is located in non-Agreement State. Source / device will be imported.
' ' If information provided by applicant is inadequate, assistance is required in the form of a letter / standard paragraphs and guides to request additional information from applicant.
l N This. case is being recorded in the ccmputer as being assigned
, to I-5. When it is returned to MLB, it will be reassigned to a MLS reviewer.
E Other--See back of page kb oMA$O
' Requestor Joseph DelMedico
Since the source distribution license is in for renewal, it would be appropriate l at this time to ask the manufacturer for any additional information that might be necessary to update the sealed source / device review, especially on Models 6D6C and 6B6G. fccording to the renewal application, the manufacturer no longer uses the model
/ designations 6D6C and 6B64. Instead, these sources now receive one of the following designations: Series 6500 or 6520 appears to replace 606C; and Series 6510, 6530, 6540, 6550, or 6570 appears to replace 6B6G. The catalogue sheets should be amended to reflect these changes and to explain the differences among the new series designations.
As part of the renewal application, the manufacturer submitted complete sealed h source / device infonnation. Please review this information to determine if any of it is new or different from the original submission. This is important, since the information in the renewal application will become a part of the tie-down condition when the license renewal is issued.
' Part of the renewal application is a request to continue the exemption from
; 6 month leak test requirements for the Series 6500 and 6520 Cs-137 sources.
Please evaluate this request and make a determination as to its acceptability. j The catalogue sheet should be amended to reflect your determination. To my knowledge, the issues raised in Earl Wright's letter of 7/20/87 (copy attached) have not been adequately resolved. In particular, the manufacturer's response to Item 2 of that letter makes reference to information contained in the license renewal application. I do not believe that Earl has had a chance to evaluate the referenced information in the renewal application to determine whether or not it adequately answers the question. What further action does the manufacturer need to take with regard to the problems detailed in Earl's letter before the distribution license can be renewed?
\
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE A0b NO,- NR-460-S :. -S DATE: PAGE 1 OF 9 SEALED SOURCE TYPE: Tube Source MODEL: Series 6500, 6520 (formerly 6D6C) MANUFACTURER / DISTRIBUTOR: 3M Health Physics Service I 3M Center, Building 224-2E-06 St. Paul, MN 55144-1000 I ISOTOPE: MAXIMUM ACTIVITY: I Cesium-137 500.0 millicuries (18.50 GBq) (see description for activity per model) l l l LEAK TEST FREOUENCY: 36 Months PRINCIPAL USE: (V) General Medical Use CUSTOM SOURCE: YES X NO I Revision 0, November 28, 1995 G:\SFSS\NR460137.SSD w-_______-___-___-_-__-___-_-____________--_-___-____ _ _ _ - _ _ _ _ _ - _ _ _ _ _ _ _ _ - _ _ _ _ _ - . _ _ _ _ __. __ - __ _ a
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l l NO.:NR-460-S-{31-S DATE: PAGE 2 OF 9 l l Tube Source SEALED SOURCE TYPE: l DESCRIPTION: l The 6500 Seriesfand 6520 Series, together formerly known as the (_ Model.6D6C source, are doubly-encapsulated gamma sources designed
- for use in brachytherapy applications. The 6500 Series, measuring approximately 0.787 in. (20.00 mm) long and 0.120 in. i (3. 050 mm) wide with a 0.551 in. (14.00 mm) active length, was l formerly known as the size "CA" capsule of the 6D6C source. The 6520 Series, measuring approximately 0.630 in. (16.00 mm) long and 0.120 in. (3. 050 mm) wide with a 0.394 in. (10.00 mm) active length, was formerly known as the size "CC" capsule of the 6D6C source.
Both the 6500 Series and the 6520 Series utilize cesium-137 (Cs-137) chloride contained in 3M Brand Radiating Microspheres. The microspheres are small ceramic particles into which the Cs- l 137 has been absorbed and then permanently fixed using a heat treatment. The microspheres are loaded into an inner capsule. That inner capsule either has a closed end and is sealed by one O.043 in. (1.100 mm) stainless steel ball pressed into the open end and welded in place (sources made before 1985), or has two open ends and is sealed by two 0.043 in. (1.100 mm) stainless steel balls, one pressed into each end and welded in place (sources made after 1985). Sources made before 1985 were kept in stock until the stock was sold. In either case, the inner capsule is inserted into an outer I capsule. A welding plug is then inserted and welded in place. ; The' outer capsule is either 0.787 in. (20.00 mm) long (for a 6500 l Series source) or 0.630 in. (16.00 mm) long (for a 6520 Series l
. source). For both Series, the outer capsule has an outer i diameter of 0.120 in. (3. 050 mm) . After welding the outer plug, the entire source is nickel plated.
The outer. capsule has an eyelet on one end. That end is also j color coded with an epoxy resin to indicate the model number and activity of the source, according to the following chart: I l' Revision 0, November 28, 1995 Gr\SSSS\NR460137.SSD _ _ _ _ _ _ _ _ - _ _ _ _ - _ - _ _ _ - i
' REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l
l NO.:-NR-460-S-y]-S- DATE: PAGE 3 OF 9 SEALED SOURCE TYPE: Tube' Source I l- DESCRIPTION: (Continued) 6500 Series Model Color Code Activity ma Ra ecuiv. 6500 Blue- 5 mci (185 MBq) 12.56 mci (464.7 MBq) 6501 Green. 10 mci (370 MBq). 25)13 mci (929.8 MBq). l 6502 Yellow.. 15 mci (555 MBq) 37.69 mci-(1.395 GBq) 6503 Orange 20 mci (740.MBq) 50.25 mci (1.859 GBq) 6504 -Red 25 mci (925 MBq) 62.81 mci (2.324 GBq) 6505 Violet 30 mci (1.110 GBq) 75.38 mci (2.789 GBq) l 6506 White 35 mci (1.295 GBq) 87.84 mci (3.250 GBq) 6507 Black 40 mci (1.480 GBq) 100.5 mci (3. 719 GBq) ! 6520 Series Color Code Activity ma Ra ecuivalent Blue 5 mci (185 MBq) 12.56 mci (464.7 MBq) Green 10 mci (370 MBq) 25.13 mci (929.8 MBq) Yellow 15 mci (555 MBq) 37.69' mci (1.395 GBq) Orange 20 mci (740 MBq) 50.25 mci (1.859 GBq) Red 25 mci (925 MBq) 1.859 mci (3.719 GBq) The Cs-137 tube source strengths listed above are " standard"
. activities. As the sources decay below the nominal activity, however, they fall into a "non-standard" activity category. The strengths of both the " standard" and "non-standard" activity sources are documented in the calibration certificate _
. accompanying the sources at the time of distribution.
The 6500 Series and 6520 Series sources are stored in a lead pig container when not in use. Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD l i j _i_i__.__________._._._________.___..__.______.______.____ . _ _ . _ _ _ . ._ . . _ . . _ ._ ___ - _ . _ _ _ _ _ _
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO.: NR-460-S-Qj-S RcTE 1. PAGE 4 OF 9 SEALED SOURCE TYPE: Tube Source DIAGRAM: See Attachments 1 and 2 LABELING: 3M stated that the exterior is engraved with a nominal activity and a serial number. In addition, the eyelet end of each 6500 Series and 6520 Series source is color-coded according to its nominal activity using a long-life epoxy resin. The DESCRIPTION section of this document has a table listing the colors and their corresponding nominal activities. The lead pig container in which the 6500 Series and 6520 Series tube sources are stored has a label which includes the following:
Description:
Cesium-137 Sources consist of two stainless steel CESIUM-137 ca,suies. an oe,e, cason, and a, inne, co,e contain,,,, Cs-137 -labeled ceramic microspheres. Brachytherapy Product No. Sources Total Activity This Container mci Cs-137 Number of Sources: Made in U.S.A. for Radiation Therapy Prodcsts Assay Date: Medical Products Division /3M St. Paul, MN 55501 Store Source in shielded container provided, or in an equivalent container with e shielding value equal to one inch of lead. WARNING: Licensed by the U.S. CAUTION: Federal law restricts radiation trefoil / Nuclear Regulatory Commission this device to sale by or on the Caution Radioactive for distribution to persons order of 2 physician. Maintain
censed pursuant to 5 35.14 proper radiation safety precautions Material l arsd 5 35.100 Group VI of 10 at all times.
CFR Part 35 or under equivalent licenses of Agreement States, i l 1 Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD r L-.___________.-____
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l NO,: NR-460-S-{3]-S DATE: PAGE 5 OF 9 SEALED SOURCE TYPE: Tube Source CONDITIONS OF NORMAL USE: The 6500 Series and 6520 Series sources are intended for use in treating cancer in body cavities, such as gynecological cancers. These sources may be used in conjunction with other treatment modalities. The sources are loaded into an applicator for use in treating a patient. Treatment takes place in a hospital room, so environmental conditions are tightly controlled. PROTOTYPE TESTING: Prototypes of the 6500 Series sources containing approximately 12.50 mci (462.5 MBq) of Cs-137 were subjected to the following prototype tests:
- 1. Temperature Test: Two 6500 Series sources were placed in a 1558.4*F i 36*F (848*C i 20*C) oven and left there for 77 minutes. Upon removal from the oven, the sources were dropped into water at a temperature of 57.2 F (14. 0 'C) .
Visual inspection of the sources after heating revealed no obvious structural defects. The wipe, leak, and soak tests were all negative for these two sources.
- 2. Imoact Test: Two 6500 Series sources were dropped from a height of 29.53 feet (9.000 m) onto a flat, 0.500 in.
(1.270 cm) thick steel plate. Visual inspection of the sources after the impact test revealed no obvious defects. The wipe, leak, and soak tests were all negative for these l two sources.
- 3. Percussion Test: A 0.984 in. (2.500 cm) diameter steel bar weighing 3.198 lbs (1.451 kg) was dropped through a 1.378 in. (3. 500 cm) inner diameter guiding sleeve onto each of l the sources used in the Impact Test. The sources were lying
- horizontally on a 1.000 in. (2.540 cm) thick lead brick.
One source was positioned so the center of the bar hit the source's center, and the other source was positioned so the edge of the bar hit the center of the source. Upon visual inspection after the percussion test, the former source Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD l
- f..
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY. EVALUATION OF SEALED SOURCE I. NO.: NR-460-S-{}{-S DATE: PAGE 6 OF 9 l SEALED SOURCE TYPE: Tube Source t l PROTOTYPE TESTING (Continued) showed a bend of about 20* from the long axis of the source. No defects were observed in the latter source. The wipe, leak, and ! soak tests were all. negative for these two sources. After each test, the tested sources were subjected to wipe / smear, l' leak, and' soak tests. The allowable limit of removable contamination for the wipe and soak tests was 0.0005 pCi l (18.50 Bq). The soak test involved completely immersing the-i sources in distilled water heated to a temperature of at least i 104*F (40*C) for a minimum of 16 hours. 'The leak test involved immersing the sources in glycerin heated to about 302*F (150*C) for at least one minute. Failure of this test occurred when any
~ bubbles were observed coming from the source.
j EXTERNAL RADIATION LEVELS: The following dose rates were calculated from the dose. rates at 39.37 in. (100 cm),.which were measured by NIST (formerly NBS). NIST stated that the measured values were accurate to within 0.9 percent. The estimated activity for each source was calculated from.the measured data using the exposure rate constant of 0.328 m'emr/hremCi as described on page 8 of Specification of- .. ' Gamma-Rav Brachytheraov Sources, NCRP Report No. 41, Washington, DC 20014. DOSE RATE AT Est. Output 5 cm (1.97 in.) 30 cm (11.6 in.) 100 cm (39.4 in.) Activity mci mR/hr (msv/hr) mR/hr (mSv/hr) mR/hr (mSv/hr) (MBq) 11.6 (429.2) 1,524 (15.24) 42.30 (0.423) 3.810 (0.038) 25.1 (928.7) 3,288 (32.88) 92.30 (0.923) 8.220 (0.082)
.37.2 (1376) 4,880 (48.80) 135.5 (1.355) 12.20 (0.122) 57.1 (2113) ') , 4 9 2 (74.92) 208.0 (2.080) 1.8 70 (0.187) 72.6- (2686) 9,520 (95.20) 264.0 (2.640) 23.80 (0.238) 93.0 (3441) 12,200 (122.0) 338.9 (3.389) 30.50 (0.305)
Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD
l^. - l I l REGISTRY OF-RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l NO : NR-460-S-[3j-S DATE: PAGE 7 OF 9
. SEALED SOURCE TYPE: Tube Source OUALITY ASSURANCE AND CONTROL:
l The following quality control procedures were followed during f production of these sources: t ! 1. Each inner capsule was leak tested after it was sealed. A negative leak test meant that no air leaks or holes were. detected while the capsule was immersed in glycerine at a temperature of 248*F - 302oF (120*C - 150 C) for at least 10 seconds. l ! 2. Each inner capsule was wipe tested after it was sealed. The allowable' limit was 0.0002 Ci (7.400 Bq) of removable Cs-137. L 3. Each inner capsule was soak tested after it was sealed in 6-7 ml of distilled water at 68*F (20*C) ' for 16 hours . The
- allowable limit was 0.0002 yCi (7.400 Bq) of detectable j Cs-137. j
- 4. Each source'was wipe tested, after~the outer capsule was sealed, as in test 2 above, except that the allowable limit
.for this test was 0.0001 pCi (3.700 Bq).
- 5. Each source was leak tested after the outer capsule was j sealed, as in test 1 above. ;
- 6. Each completed source was leak tested as in test 1 above.
L 7. Each completed source was soak tested. The maximum allowable limit was 0.0005 pCi (18.50 Bq). Gl . Each completed source was visually inspected to ensure it was nickel plated smoothly and completely with no discoloration, to check for uniform, smooth welds, to check l for the proper color code, and to check that the activity I ! (in mg Radium' equivalent) and serial number were properly i engraved on the source. l l 9.'Each completed source was assayed to ensure its activity was 0-10 percent above the nominal activity. Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD
O REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l NQ : NR-460-S-137-S DATE: PAGE 8 OF 9 SEALED SOURCE TYPE: Tube Source OUALITY ASSURANCE AND CONTROL: (Continued)
- 10. Prior to shipment, each source was visually inspected for proper labeling, assayed for radioactivity as in (9) above, and wipe tested, with an allowable limit of 0.0001 pCi (3.700 Bq) of removable contamination. Any sources not meeting these final checks were rejected.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
- These sources may be distributed only to persons specifically licensed by the NRC or an Agreement State.
- At time of distribution of both " standard" and "non-standard" activity Cs-137 sources, a calibration certificate will accompany the shipment which shows for each source the actual measured output activity in millicuries of Cs-137 and the calculated milligram radium equivalent Cs-137 activity.
- Handling, storage, use, transfer, and disposal: to be determined by the licensing authority.
- As of July 1992, 3M Health Physics Services' entire inventory of 6500 Series and 6520 Series sources were bought I by Medi+ Physics of Arlington Heights, IL. They are intended I for distribution under Medi+ Physics' distribution license. I 1
- The sealed sources shall be leak tested at intervals not to exceed 36 months (3 years) using techniques capable of ,
detecting 0.005 microcurie (185.0 Bq) of removable 1 contamination.
- This registration sheet and the information contained within the references shall not be changed without the written consent of the NRC.
f Revision 0, November 28, 1995 l C:\SSSS\NR460137.SSD
o REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO,: NR-460-S-$3}-S DATE: PAGE 9 OF 9 SEALED SOURCE TYPE: Tube Source SAFETY ANALYSIS
SUMMARY
The 6500 Seriea and 6520 Series sources are not current products manufactured or distributed by 3M Health Physics Services. However, 3M Health Physics Services will continue to receive these sources for disposal. Based on our review of the information and test data cited below, and the past history of the source design, we continue to conclude that the 6500 Series and 6520 Series tube sources are acceptable for specific licensing purposes. Furthermore, we continue to conclude that these sources would be expected to maintain their 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 6500 Series and 6520 Series (formerly 6D6C) sources are hereby incorporated by reference and are made a part of this registry document: l
- 3M Health Physics Services' letters dated August 6, 1991, February 15, 1991, November 6, 1990, July 24, 1989, January l 17, 1985, and May 1, 1980, with enclosures thereto )
I j ISSUING AGENCY: l U.S. Nuclear Regulatory Commission j l f Date: Reviewer: Thomas W. Rich Date: Concurrence: Steven L. Baggett I Revision 0, November 28, 1995 l G:\SSSS\NR460137.SSD l
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO.: NR-460-S-[132-S DATE* ATTACHMENT 1 l l f Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD
I REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l NO.: NR-460-S-1371-S
+ usa DATE- ATTACHMENT 2 i
i i I b e Revision 0, November 28, 1995 G:\SSSS\NR460137.SSD i
I . f 3M Mealth Phy ervices / ~/f [
$ 3M Centa Bldg. 224 2E-06 .
St. Paul, MN 55144-1000 612/736 0498 August 6, 1991 U.S. Nuclear Regulatory Commission Washington D.C. 20555 Attn: Mr. Steven L. Baggett Nuclear Material Safety and Safeguards Medical and Commercial Use Safety Branch ; Mail Stop 6H3 { ! I I
Subject:
Inactive Source Registrations Gentlemen: In accordance with a July 25, 1991 telephone conversation between Mr. Melvin R. Peters, 3M, and Mr. John W. Lubinski, NRC, enclosed is a listing of registered 3M sources which < should be terminated. The manufacturing of these scu d s ! either has been, or will have been, permanently d-identinued by September 3'0, 1991. It is our understanding that upon termination:
- 1. The registrations will become part of NRC's x inactive file, but present users of the sources may continue to use them.
- 2. 3M can accept the sources for disposal and leak testing, but cannot refurbish or repair them.
- 3. 3M, on a best effort basis, will provide the NRC with a listing of the total number of sources sold and the date of the last sale.
- 4. The annual maintenance fee for the registrations will be waived.
Yo s t uly,
\
,s obert . issink, Chairman !
Isotope Committee l
Enclosure:
3M Inactive Source List (July 27, 1991) , 1
' kh%- %h - ~
i j 07/29/91 MINNESOTA MINING & MFG (TO INACTIVE STATUS) PAGE 1 , SOURCE INVOICE 8 LICENSE t- MODEL i AMO 6645 91 STB 1129 THORIUM-AMO 6541 91 22 00057 34G _. 703 AMO 6628 91 NR 0459S 101 S/ 4F6Y AMO 0629 91-- NR 0459S 102 S'y 3F1G // AMO 6551 91 NR 0460S'101 U' 4F6D AMO 6552 91 NR 0460S.102 Ss 4F6H-AMO 6553 91 pcy, gc 7 'g4 qg , 7_ f ! NR 0460S 103 U V 4F6GY( AMO 6554 91 NR 0460S.105 U 6B6F / AMO 6555 91 NR 0460S 106 0 4F6P'/ AMO 6556 91' NR 0460S 107 S 1C2A,1C2B / AMO 6557 91 NR 0460S 108 U 4F3Be AMO 6558 91 NR 0460S 109 U 4F3C / AMO 6543 91 NR 0460D 110 U 3MIC / AMO 6544 91 NR 0460D 111 U 3M1B/ AMO 6559:91 NR 0460S 112 U 3E4G / AMO 6560 91 NR 0460S 113 U. 4D3A/ AMO 6561 91 NR 0460S 114 U 4D3B/ AMO 6562.91 NR 0460S 115 U 4D6D / I AMO 6563 91 NR 0460S 116 U 4D6F' AMO 6564 91 NR 0460S 117 U SF1D / l AMO 6565 91 NR 0460S 118 U SFIE / AMO 65S6 91 NR 0460S 119 U SFIF / AMO 6567 91 NR 0460S 120 U 5 FIG / l AMO 6568 91 NR 0460S 121 U 3L2B/ ! AMO 6569 91 NR 0460S 122 U 3L2A/
'AMO 6545-91 NR 0460D 123 U 3M1F /
AMO 6570-91 NR Ok60S 124 U 3L2C / AMO 6571 91 NR.0460S 125 0 1E2JV AMO 6572 91 NR 0460S 126 U 3 FIG / AMO 6573 91 NR 0460S 127 U 4F1E / AMO 6574 91 NR 0460S 128 U S F 1 H " AMO 6575 91 NR 0460S 129 U 3E40 v L AMO 6576 91 NR 0460S 130 U SF IN* AMO 6577 91 NR 0460S 131 U 5 FIN (MODIFIED)v/ AMO 6578 91 NR 0460S 132 U / I AMO 6579 91 NR 0460S 133 U 7 6H6A L v/j B 8 AMO 6580 91 NR 0460S 134 U 6H68 7 AMO 6581 91 NR 0460S 135 U 4D6M / AMO 6582'91 NR 0460b 136 U L2E / AMO 6583 91- NR 0460S 137 Sgvl}6500 ,4 6520 (FORMERLY SD6C) # JAMO 6584 91 6;NR 4R0460S 0460S139 138U U 3L2D AMO 6585-91 p 3Q1D AMO 6586 91' 140 U 3E4L, 3 E 4 S /' AMO 6587 91- ffNR0460S 1411U 3 FIR / / [ AMO 6546 91 'fNR0460S NR 0460D 142 G 902, 902F, 003/ . AMO 6588 91 DI NR 0460S 143 S kP6E/ l.' AMO 6589 91 D NR 0460S the S 4P6M / AMO 6547 91 V NR 04600 145 U 3 MIL' k-
.AMO 6590 91 $ NR 0460S 146 U 3G9A / jq AMD 6592 91 \MR 0460S 147 U 3B4G gg ' '
AMO.6591~91 NR 0460S 147 S 3B4G AMO 6593 91 NR 0460S 148 U 4F3F v/ AMD 6594 91 ~ NR 06 SOS 149 U 4F3G s' l-A
l 07/29/91 O MINNESOTA MINING & MFG (TO INACTIVE STATUS) O 1 ; PAGE 2 . SOURCE l INVOICE i LICENSE 8 MODEL 8 1 JYI l AMO 6595 91 NR 0460S 151 S LI6530 ECF (FORMERLY 6B6G) / l AMO 6548 91 NR 0460D 152 U 6H6D l AMO 6596 91 NR 0460S 153 S ALBf> MIN MICROSPHERES (HUMAN) TC-99M #Y .I"
' "I AMO 6549 91 NR 0460D 154 U 6H6E SOURCE APPLICATOR, 8C9T SAFE #
AMD 6597 91 NR 0460S 155 S 4DSL/ , AMO 6598'91 NR 0460S 156 S 4D6P AMO 6599 91 NR 0460S 158 U 3F1I j3F1J. 3FIL / AMO 6600 91 NR 0460S 159 U 3F1V AMD 6601 91 NR 0460S 160 U vcwcc377Es AMO 6602 91 NR 0460S 161 U kP6T[ 4F3D AMO 6603 91 NR 0460S 162 U 4F3H/ AMD 6604 91 NR 0460S 163 S 4F6S / AMO 6605 91 NR 0460S 164 S 3E40 / AMO 6606 91 NR 0460S 165 S 6701 / AND 6550 91 NR 0460D 168 G 702, 703, 704 dD AMO 6609 91 NR 0460S 169 S9*/tS10,6550,6570 (FORMERLY 6B6G) / AMO 6610 91 NR 0460S 170 S 4P6V /j AMO 6611 91 NR 0460S 171 S 4F6ST 4 i
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