ML20248B382
| ML20248B382 | |
| Person / Time | |
|---|---|
| Issue date: | 01/26/1996 |
| From: | Steven Baggett, Doug Broaddus NRC |
| To: | |
| Shared Package | |
| ML20248B384 | List: |
| References | |
| SSD, NUDOCS 9806010277 | |
| Download: ML20248B382 (13) | |
Text
.__
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO.: NR-460-S-914-S' DATE: January'26, 1996 PAGE 1 OF 6 l
SEALED SOURCE TYPE:
Beta Source i
MODEL:
3B4G MANUFACTURER / DISTRIBUTOR:
3M Health Physics Services 3M Center, Building 224-2E-06 St. Paul, MN 55144-1000 ISOTOPE:
MAXIMUM ACTIVITY:
Krypton-85 10.00 millicuries (370.0 MBq)
LEAK TEST FREOUENCY:
Not Required PRINCIPAL USE:
(R) Gas Source CUSTOM SOURCE:
YES X
NO tv 9906010277 960126 PDR RC SSD PDR o-.
...a m w q.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO.; NR-460-S-914-S DATE: January 26, 1996 PAGE 2 OF 6 SEALED SOURCE TYPE:
Beta Source DESCRIPTION:
The Model 3B4G is a singly-encapsulated, variable-length gas source.
Each end of a 0.070 in. (0.178 cm) outer diameter,
'O.066 in. (0.168 cm) inner diameter stainless steel tube is inserted into a length of 0.125 in. (0.318 cm) outer diameter, 0.065 in. (0.165 cm) inner diameter copper tubing.
The two lengths of copper tubing are bored out to an inner diameter of 0.070 in. (0.178 cm) and a depth of 0.130 in. (0.330 cm) before inserting the stainless steel tube.
The two lengths of copper tubing are 1.000 in. (2.540 cm) and 0.630 in. (1.600 cm) long.
The copper tubes are silver brazed onto the stainless steel tube.
One of the copper tubes is then crimped and silver brazed to seal it.
The other tube is used to fill the unit with the desired amount of krypton-85 (Kr-85) gas.
Then, the other tube is crimped and silver brazed shut, sealing the Kr-85 gas inside.
The active length of the 3B4G source is defined as the length between the inner ends of the two copper tubes.
The stainless steel main tube is 0.260 in. (0.660 cm) longer than this.
Active lengths vary from 1.500 in. (3.810 cm) to 12.00 in. (30.48 cm).
The length of the complete 3B4G source is always 1.630 in. (4.140 cm) more than the active length.
DIAGRAM:
See Attachment 1 LABELING:
3M stated that the 3B4G source contains no labeling due to its size, but the source is always contained in some sort of shield or device which contains proper labeling.
l The 3B4G source is shipped in one of two ways.
The normal t
shipment method is to place the source in a type 2R container, which is in turn placed in a type 7A container.
A metal plate
l l'
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES l
SAFETY EVALUATION'OF SEALED SOURCE NO.: NR-460-S-914-S-DATE: January 26, 1996 PAGE 3 OF 6 SEALED SOURCE TYPE: ' Beta Source
.L&BELING: (Continued) engraved with the date, isotope, " Caution, Radioactive Material,"
'and. activity'(in mci) is attached-to the type 2R container.
The other shipment: method utilizes.a customized shipping container providedlby TSI, Inc.
TSI:provided a metal. housing into which the 3B4G source wasLinstalled.
A label attached to the TSI housing contained the activity in GBq, isotope, date, serial number, " Caution - Radioactive Material," and the company name.
CONDITIONS OF NORMAL USE:
This source is designed to be used as a source of electrons,.with
-potential applications including ionizers of various sorts and static elimination'and beta gauging equipment within a temperature range of 32*F to 158'F (0*C to 70'C) and atmospheric pressure.
PROTOTYPE TESTING:
A prototype-of,the.Model 3B4G source was tested in accordance with the specifications'of ANSI N542-1977'and achieved a classification of 77C32131.
EXTERNAL RADIATION LEVELS:
2 An' air ionization unit having a 7.0 milligram /cm window density (45.6 cm window area) was used to measure the radiation dose z
rates from a 10 mci (370 MBq) Model 3B4G sealed source.
Radiation dose rates at 1.97" (5 cm) and 11.81" (30 cm) are.
listed below:
Position Radiation Dose Rate at 1.97" 11.81" Normal-to Window (no beta shield) 43.0 R/hr*
1200.0 mR/hr
' Normal to Window (with beta shield) 1.2 mR/hr 8.0 mR/hr
- ' Estimate l
J
REGISTRY OF RADIOACTIVE SEALED SOURCES-AND DEVICES SAFETY EVALUATION OF SEALED SOURCE-NO.: NR-460-S-914-S DATE: January 26, 1996 PAGE 4 OF 6 SEALED SOURCE TYPE:
Beta Source OUALITY ASSURANCE AND CONTROL:
The' Quality. Assurance Program used to ensure'the sealed! sources were fabricated-to the NRC approved design was based on Mil-Q-o 9858-A guidelines..The. program was previously. deemed acceptable for: licensing purposes by NRC.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
This source 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.
a.This source shall not be subjected to environmental or other 1
conditions of use which exceed ANSI Classification 77C32131 (ANSI.N542-1977).
- This' registration sheet and the information contained within the references shall notube changed without the written consent of the NRC.
SAFETY ANALYSIS
SUMMARY
)
1 The.Model 3B4G source is not a current product manufactured or
)
' distributed by 3M Health Physics Services..However, 3M Health i
Physics Services will continue to receive'Model 3B4G sources for
-disposal.
Becao on our review of the Model 3B4G source, and the information i
- and test data cited below, we continue to conclude that this sourceLia acceptable for specific licensing purposes.
Furthermore,.we continue to conclude that the Model 3B4G source 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.
fs L
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l 1-(
REGISTRY-OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l
NO.; NR-460-S-914-S DATE: January 26, 1996 PAGE 5 OF 6 l
SEALED SOURCE TYPE:
Beta Source
REFERENCES:
The following supporting documents for the Model 3B4G source are hereby incorporated by reference and are made a part of this registry document:
3M Health Physics Services' letters dated August 6,
- 1991, l
December 14,-1990, June 8, 1990, May 19, 1981, March 6,.
1981, June 11, 1980, and June 17, 1968, with enclosures thereto ISSUING AGENCY:
U.S.
Nuclear Regulatory Commission Date:
January 26, 1996 Reviewer:
~
p6u las A.
Broaddus m
Date:
January 26, 1996 Concurrence:
/
- ff te'vsn d.' Baggett l
i o
I 1
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES
. SAFETY EVALUATION OF SEALED SOURCE I
NO.: NR-460-S-914-S DATE! January 26, 1996 ATTACHMENT 1
-- FlLL WIT 4 ITEM BEFORE CRIMPINS A?lD 'EAL!NG WITH \\TT.M 3 EE i
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1.00 f
.13 ClillL C3PPER TUEE l.C.
I TO DEPT #.07'5 OtA
(*49 DmLQ-ZPL ACT tVE
,y
.A -
LENGTH
~
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_. _ _1_. _
3
.._ :)i N NU s stat 2 PL i
.63 F't
-:wo acT4 vos
- Active Length varies from 1 1/2" to 12".
1 Item Description 1
Tube, 316 Stainless Steel (0.070" O.D. x 0.066" I.D.)
2 Tube, Copper ASTM B-75, Soft, Seamless (0.125" O.D. x 0.030" wall) 3 Braze: Silver, Cad. free Allstate 155 4
Gas: Kr-85 Drawina 12-1921-0780-8
.o-l^
}.'
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES' SAFETY EVALUATION OF SEALED SOURCE; 9b NO,:-NR-460-S-J
-S DATE:
PAGE 1 OF 6 1
SEALED SOURCE TYPE:
Beta Source 1
l l>
MODEL:
3B4G.
f MANUFACTURER / DISTRIBUTOR:
3M Health Physics Services 3M Center,; Building 224-2E-06 Sc. Paul, MN 55144-1000 ISOTOPE:
MAXIMUM ACTIVITY:
Krypton 10.00 millicuries (370.0 MBq)
LEAK TEST FREOUENCY:
Not Required 1
PRINCIPAL USE:
(R) Gas. Source CUSTOM' SOURCE:
YES
'X NO Revision 0, December 18,1995 0:\\SSSS\\NR460147.SSD
e REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO,1 NR-460-S-[47-S DATE:
PAGE 2 OF 6 SEALED SOURCE TYPE:
Beta Source DESCRIPTION:
The Model 3B4G is a singly-encapsulated, variable-length gas source.
Each end'of a 0.070 in. (0.178 cm) outer diameter, 0.066 in. (0.168 cm) inner diameter stainless steel tube is inserted into a length of 0.125 in. (0.318 cm) outer diameter, 0.065 in. (0.165 cm) inner diameter copper tubing.
The two lengths of copper tubing are bored out to an inner diameter of
'0.070 in. (0.178 cm) and a depth of 0.130 in. (0.330 cm) before inserting the stainless steel tube.
The two lengths of copper tubing are 1.000 in. (2.540.cm) and 0.630 in. (1.600 cm) long.
The copper tubes are silver brazed onto the stainless steel tube.
One of the copper tubes is then crimped and silver brazed to seal it.
The other tube is used to fill the unit with the desired amount of krypton-85 (Kr-85) gas.
Then, the other. tube is crimped and silver brazed shut, sealing the Kr-85 gas inside.
The active length of the 3B4G source is defined as the length between the inner ends of the two copper tubes.
The stainless steel main tube is 0.260 in. (0.660 cm) longer than this.
Active lengths vary from 1.500 in. (3.810 cm) to 12.00 in. (30.48 cm).
The length of the complete 3B4G source is always 1.630 in. (4.140 cm) more than the active length.
DIAGRAM:
See Attachment 1 LABELING:
CM stated that the 3B4G source contains no labeling due to its size, but the source is always contained in some sort of shield or device which contains proper labeling.
The 3B4G source is shipped in one of two ways.
The normal shipment method is to place the source in a type 2R container, which is in turn placed in a type 7A container.
A metal plate Revision 0. December 18,1995 G:\\SSSS\\NR460147.SSD I
t f
(-
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO,: NR-460-S-1((-S-DATE:
PAGE 3 OF 6 SEALED SOURCE TYPE:
Beta Source LABELING: (Continued) engraved with the date, isotope, " Caution, Radioactive Material',"
and activity (in mci) is attached to the type 2R container.
The
'other shipment method utilizes a customized shipping container provided by TSI, Inc.
TSI provided a metal housing into which~
the 3B4G source was installed.
A label attached to the TSI housing contained the activity in.GBq, isotope, date, serial number, " Caution - Radioactive Material," and the company name.
CONDITIONS OF NORMAL USE:
This source.is designed to be used as a source of electrons, with potential applications including ionizers of various sorts andr j
static elimination equipment M W gg, gy
_)
j PROTOTYPE TESTING:
A prototype of the Model 3B4G source was tested in accordance with'the specifications of ANSI N542-1977 and achieved a classification of 77C32131.
EXTERNAL RADIATION LEVELS:
Asireference in the 92 Revised Edition of the Health Physics
-and Radiologi al Hea h Handbook, Rules of Thumb, for a point source of beta rad
- tion (neglecting self-and air-absorption) of a given source t
ngth in curies, the dose rate at 0.400 in.
(1.016 cm) is ap oximately equal to 300.0 rem /hr per mci (81.08 mSv/hr p r Bq).
The variation with energy is small over.
a wide range.
as upon this, beta dose rates were calculated for a 10.00 m i (37. 0 MBq) Kr-85 sealed source.
L.
l' g Qhbh b Revision 0, December 18,1995 G:\\SSSS\\NR460147.SSD 1
a___
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[-
REGISTRY ~OF RADIOACTIVE' SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE
[
NO,: NR-460-S-1}]-S DATE:
PAGE 4 OF 6 g
SEALED SOURCE TYPE:
Beta Source EXTERNAL RADIATION (Cont inue'd)
The results of the calculations are as follows:
D stance Maximum Radiation Level (fro surface)
(cm)
(in.)
~(RMr)
'(Sv/hr) k 1.97 j/ 600*
6.00 5
30
( 11.81 j/
100
'1.00
\\39.37 100 30 0.30 As noted abo the esults of the' calculations are based upon the neglect o sel and. air-absorption.
Also, absorption due to
.the shielding te ial was not taken into consideration.
-With the inclusion o luminum shielding and air-absorption, it is estimated that e ernal radiation levels'at 11.81 in. and 39.37 in. (30.00 cm an 00.0 Lcm) would be negligible given that the range in alumin m o beta particles from Kr-85 is approximately
'O.002 in. (0.0 cm) and less than 12.00 in. (30.48 cm) in air.
Likewise, the' ose ra e at 1.970 in. (5'.000 cm) would be
~ significant1 reduced.
OUALITY ASSURANCE AND CONTROL:
The' Quality Assurance Program used to ensure the sealed sources
- were fabricated to the NRC approved design was based on Mil-Q-9858-A guidelines.
The program was previously deemed acceptable for licensing purposes by NRC.
Revision 0. December 18,1995 G:\\SSSS\\NR460147.SSD
I 1
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO,: NR-460-S-${%-S DATE:
PAGE 5 OF 6 SEALED SOURCE TYPE:
Beta Source LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
- This source 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.
- This source shall not be subjected to environmental or other conditions of use which exceed ANSI Classification 77C32131 (ANSI N542-1977).
- This source h
be leak tested at intervals not to exceed 6 months usi techniques capable of detecting 0.005 micro u 'e (185. 0 Bq) of removable contamination.
- 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 Model 3B4G source is not a current product manufactured or distributed by 3M Health Physics Services.
However, 3M Health Physics Services will continue to receive Model 3B4G sources for disposal.
]
\\
Based on our review of the Model 3B4G source, and the information and test data cited below, we continue to conclude that this source is acceptable for specific licensing purposes.
Furthermore, we continue to conclude that the Model 3B4G source 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.
Revision 0. December 18,1995 G:\\SSSS\\NR460147.SSD i
J
t REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE NO.: NR-460-S-((3-S DATE:
PAGE 6 OF 6 i'
SEALED SOURCE TYPE:
Beta Source l
\\
REFERENCES:
The following supporting documents for the Model 3B4G source are hereby incorporated by reference and are made a part of this registry document:
E
.
- 3M Health Physics Services' letters dated August.6, 1991, December 14, 1990, June 8, 1990, May 19, 1981, March 6, 1981, June-11, 1980, and June 17,L1968, with enclosures thereto.
r ISSUING AGENCY:
EU.S. Nuclear Regulatory Commission Date:
Reviewer:
Thomas W. Rich Date:
Concurrence:
Steven L. Baggett Revision 0. December 18,1995 G:\\SSSS\\NR460147.SSD
{'
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF SEALED SOURCE l
NO,:.NR-460-S-[6]-S DATE:
ATTACHMENT 1 l
l-l l
o Revision 0, December 18, 1995 G:\\SSSS\\NR460147.SSD
4 4
pME%q p*
t UNITED STATES g
,, g NUCLEAR REGULATORY COMMISSION 2
WASHINGTON, D.C. 20555 0001 February 12, 1996 NOTE T0:
MINNES0TA MINING AND MANUFACTURING (3M) INACTIVE FILES FROM:
SUBJECT:
INACTIVATION OF REGISTRATIONS BASED ON AUGUST 6, 1991, LETTER.
I 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 ha; 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 pr6vious 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.
I t
1 W
) r'- 'E lI h0 fj
e.
x 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 colunn 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.
j 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 1
- DOCUMENT NA.M.E:
. ~ i CS\\SS.DS\\ INACTIVE \\.NRC\\460lNACT. CMP C:\\WPDO n
e. c.,,
-~ 2. c.,,. - w. u.
OFFICE SCDB-lC l
l l
l NAME-DABroaddus DATE 02/29/96
~~
OFFICIAL RECORD COPY hpl\\ 0
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ENCLOSURE 1 REGISTRATIONS TRANSFERRE0 TO INACTIVE STATUS
. 0ld Certificate No.
New' Certificate No.
Nodel 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-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, 1C28 NR-460-S-108-S NR-0460-S-880-S 4F3B NR-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 3MlB NR-460-S-112-S NR-0460-S-884-S 3E4G NR-460-S-Il3-S NR-0460-S-885-S 4D3A' NR-460-S-Il4-S NR-0460-S-886-S 4D3B NR-460-S-115-S NR-0460-S-887-S 4D6D 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-0460-S-890-S 9,
pp NR-460-S-120-5 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-895-5 3L2C
~
I l
ENCLOSORE I REGISTRATIONS TRANSFERRED TO INACTIVE STATUS 1
Cid 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 3F1G NR-460-S-127-S-NONE - NO INFORMATION 4F1E AVAILABLE NR-460-S-128-S NR-0460-S-899-S 5F1H 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
~
~~
6H6B 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. 6D6C)
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, 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 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 I
[.
l ENCLOSURE 1 i
REGISTRATIONS TRANSFERRED TO INACTIVE STATUS Old Certificate No.
New Certificate No.-
Nodel 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 406L NR-460-S-156-S
~~
~
406P NR-460-S-158-S NR-0460-S-921-S 3Fil, 3FlJ, 3FIL NR-460-S-159-S NR-0460-S-922-S 3FIV 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 i