ML20209C967
| ML20209C967 | |
| Person / Time | |
|---|---|
| Issue date: | 06/07/1999 |
| From: | Jankovich J, Samson Lee NRC |
| To: | |
| Shared Package | |
| ML20209C963 | List: |
| References | |
| SSD, NUDOCS 9907130002 | |
| Download: ML20209C967 (9) | |
Text
r REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE I
(AMENDED IN ITS ENTIRETY) l l
.NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 1 OF 7 l
DEVICE TYPE:
Portable Moisture Density Gauge MODEL:
C-100, C-200, C-300 1
l l
MANUFACTURER / DISTRIBUTOR:
Seaman Nuclear Corporation 7315 South First Street Oak Creek, WI 53154 SEALED SOURCE MODEL DESIGNATION:
t For Models C-100, C-200, and C-300:
l Amersham Models: CDC.804, CDC.805, AMN.6002, AMN.Q1954 Du Pont Merck: NER-550 l
3M: 4P6M Nuclear Sources and Services: AN-HPG, AN-HP, GT-GHP For Models C-300:
Amersham Models: AMN.PE5, AMN.V997, CDC.800 Gammatron Models: AN-HP, GT-GHP Isotope Products Laboratory Model: HEG-137 ISOTOPE:
MAXIMUM ACTIVITY:
Cesium-137 10 mci (370 MBq)
Americium-241/ Beryllium 50 mci (1.85 GBq) l l
LEAK TEST FREOUENCY:
6 Months l
l PRINCIPAL USE:
(G) Portable Moisture Density Gauges CUSTOM DEVICE:
YES X
NO 9907130002 990607 PDR RC PDR SSD
$90 7/ 5 GW ?
e L'
L l
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY) l NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 2 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge DESCRIPTION:
l The Model C-300 is a portable single piece unit, weighing-about 37 pounds (16.8 kg), whereas the Models C-100 and C-200 are weighing about 45 pounds (20.4 kg).
When facing the gauge, the physical dimensions of C-100, C-200, and C-300 are:
External Dimensions Model C-100/C-200 C-300 inch cm inch cm Width 17 43 17 43 Depth (with optional Probe) 11.5 29 9.5 (11) 24 (28)
Height of gauge (with handle) 13 (15) 33 (38) 10.5 (13) 27 (33)
All Models incorporate a 50 mci (1.85 GBq) americium-241:bery11ium sealed neutron source and an 10 mci (370 MBq) cesium-137 sealed gamma source enabling inspection of materials for moisture content and density.
The cesium-137 source is housed in a lead shield within the device and is rotated 180 between its On and Off position.
The source remains in the device at all times.
In the Model C-300, the lead shield for the cesium-137 source is held to the base of the meter with four stainless steel studs and tamper resistant nuts.
For additional strength, a plate is fastened with screws to the top of the shield and to the flange of the base.
In the Models C-100 and C-200, the lead shield is secured to the base with an aluminum bracket.
The bracket is secured to the base with four machine screws, and the lead is secured to the bracket with three self tapping screws.
For all Models, the On-Off l
mechanism, whose status is indicated by the position of the l
carrying handle, moves the cesium-137 source holder within its stationary shield inside the gauge.
The On-Off mechanism incorporates a 2 to 1 gear ratio which meaas that turning the handle 90* will rotate the source 180.
When the gauge is not in I
l use, the source holder rests in the shielded position surrounded i
by lead.
i i
i I
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES i
SAFETY EVALUATION OF DEVICE l
(AMENDED IN ITS ENTIRETY) i l
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 3 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge J
DESCRIPTION (Cont'd):
There is no shutter for the americium-241: beryllium source.
The americium-241: beryllium source is fixed at the gauge bottom in the main lead casting.
In the optional direct transmission mode, the source remains protected in the instrument housing and only the detector is placed in a probe external to the gauge.
The C-100, C-200, and C-300 gauges are designed so that the source positioning mechanism must be in the Off position for the gauge to be transported.
To accomplish this, the shielding mechanism is returned to the Off condition by lifting the handle from either of its two operating positions.
Approximately 3 ft-pounds (0.41 m-kg) of torque _is required to overcome the positioning detent in the On condition.
Lifting the gauge by its handle, which is horizontal in the on condition, applies 27 ft-pounds (3.73 m-kg) of torque.
Lifting of the gauge by the handle will return the gauge to the Off condition.
Epoxy is used to retain-the sources within their holders.
This epoxy is insoluble in water and most common solvents.
Seaman has indicated there have been no epoxy failures in either the 20 year history of this type of gauge nor in the 35 years of Seaman Nuclear products.
The source holders must be heated to 600 F (316*C), a temperature that melts the lead in the source holder, to release the source.
Seaman has demonstrated that the epoxy will withstand exposure to radiation experienced during the life of the device.
However, even if the epoxy were to fail, the sources would remain in the housing due to the design of the shielding for the cesium-137 and americium-241: beryllium sources.
The Models C-100 and C-200 are of similar design to the Model C-300.
The only differences between the devices are overall dimensions, dimensions of some parts, and other minor differences internal to the device.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 4 OF 7 i
DEVICE TYPE:
Portable Moisture Density Gauge LABELING:
The device is labeled in accordance with 10 CFR 20.1901.
l Specifically, a label is adhered to the front of the lower l
section of the device and includes the device model number, l
serial, isotopes, activities, dates of assay, the trefoil symbol, and the words " Caution - Radioactive Material."
In addition, the device labeling identifies Seaman Nuclear.
l When the top portion of the device (electronics) is removed, the statement "DO NOT DISASSEMBLE BEYOND THIS POINT." is labeled on all Models.
I l
The On and Off position of the cesium-137 source is indicated by l
the position of the handle.
For the Model C-300, there are also l
figures next to the device read out that indicate the source condition based on the position of the handle.
l DIAGRAM:
i See Attachments 1 and 2.
l CONDITIONS OF NORMAL USE:
i The devices are designed for use under conventional field construction and testing conditions, including environmental ranges from 0 to 100% relative humidity, ambient temperatures -20 to 60*C (-4 to 14 0*F), and with the base in contact with material up to 191 C (37 6*F).
PROTOTYPE TESTING:
A prototype of the Model C-300 was subjected to and passed the following tests.
Cold Cycle:
Eight hours at -12*C (10. 4 " F).
Hot Cycle:
Eight hours at 63 C (145 F).
L
.s
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7,1999 PAGE 5 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge j
PROTOTYPE TESTING (Cont'd):
Thermal Shock: Hot (63*C [145 F]) and cold (-12 C [10.4*F])
environments were established.
The device was subjected to the hot environment for 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and then transferred to the cold environment for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Then, the device was subjected to the cold environment for 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and then transferred to the hot environment for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Hot Surface:
A 191 C (376 F) surface was established. The device was placed on the surface for 20 minutes and then' allowed to cool to ambient (20 C [68 F]).
The device was then cycled, 6 times, between the 191*C (376 F) surface for 5 minutes and an ambient surface for 5 minutes.
Vibration:
Device was fastened to a vibratory test fixture for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The frequency was 12.5 Hz and the amplitude was 0.125" (0.3 cm) in one direction and 0.018" (0.46 mm) in the other direction.
The device was rotated after 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
Droo Test:
Dropped onto an asphalt surface from 1 m (3.3').
Also dropped 5 times onto a 1" (2.54 cm) diameter steel ball from a height of l' (30.5 cm).
Based on design similarities, it is expected that the Models C-100 and C-200 would withstand the same testing.
EXTERNAL RADIATION LEVELS:
The table in Attachment 2 includes the maximum combined gamma and neutron dose rates for the Model C-300, containing 10 mci (370 MBq) of cesium-137 and 50 mci (1.85 Gbq) of americium-241/ beryllium, in a number of different locations and gauging modes.
Dose rates for the Models C-100 and C-200 would be a maximum of 10 percent higher in some cases than those listed in the Attachment 2 according to the manufacturer.
REGISTRY OF RADIOACTIVE. SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ1 NR-587-D-104-S DATE: June 7, 1999 PAGE 6 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge OUALITY ASSURANCE AND CONTROL:
1 l
_ Seaman Nuclear Corporation maintains a quality assurance and l
control program which has been deemed acceptable for licensing purposes by NRC.
A copy.of the program is on file with NRC.
i LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
e The devices shall be distributed to specific licensees of the NRC or Agreement States.
l l
8 The device shall be leak tested at intervals not to exceed 6 months using techniques capable of detecting 0.005 mci (185 Bq) of removable contamination.
l e
Handling, storage, use, transfer, and disposal: To be i
determined by the licensing authority.
l l
e This registration sheet and the information contained within l
the references shall not be changed without the written consent of the NRC.
l SAFETY ANALYSIS
SUMMARY
Based on review of the Models C-100, C-200, and C-300'and the information and test data cited below, we conclude that the devices are acceptable for licensing purposes.
l l
Furthermore, we. conclude that the devices would be expected to i
maintain their integrity for normal conditions of use and I
accidental conditions.which might occur during uses specified in this certificate.
RE FERENCES :
The following, documents for the Models C-100, C-200, and C-300 portablc moisture density gauges are hereby incorporated by reference and are made a part of this registration certificate:
j
l l'
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES l
. SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY) i NO: NR-587-D-104-S DATE:Jtme 7,1999 PAGE 7 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge RE FERENCES (Cont'd):
e
. Seaman Nuclear Corporation's letters dated May 26,.1999, l
March 31, 1999, March 30, 1999, October 8, 1998, September l
16, 1998, July 31, 1998, June 1, 1998, December 30, 1997, and December 23, 1997, with enclosures thereto.
I ISSUING AGENCY:
U.S. Nuclear Regulatory Commission
<r-d""" 7' 1999 Date:
Reviewer:
i Seung J. L'ee fgf JAE Date:
June 7, 1999 Concurrence:
John P.
Jankovich I
i i
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7,1999 ATTACHMENT 1 l
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY) l N_Q1 NR-587-D-104-S DATE : June 7,1999 ATTACHMENT 1 1,
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY) i NO: NR-587-D-104-S DATE : June 7,1999 ATTACHMENT 2 Dose Rate for Mode'A C-300 l
l l
Distance Side Gauge Mode contact 30 cm (0.98")
1 m (3.3 ')
Front Shielded 10.1 1.7 0.4 Touchable 16.4 1.9 0.6 Untouchable 17.5 2.2 0.5 Air Gap 71.0 2.6 0.7 Back Shielded 11.8 1.8 0.3 Touchable 17.8 2.4 0.3 Untouchable 20.1 2.5 0.4 Air Gap 75.9 2.8 0.5 l
Right Shielded 17.1 1.6 0.3 Touchable 24.1 2.6 0.5 Untouchable 24.1 2.8 0.5 Air Gap 35.-7 2.9 0.6 Left Shielded 2.7 0.9 0.2 Touchable 2.8 0.7 0.2 Untouchable 3.1 0.7 0.2 Air Gap 3.6 0.9 0.2 Top Shielded 6.1 1.4 0.2 Touchable 2.0 0.5 0.2 Untouchable 2.0 0.6 0.2 Air Gap 2.0 0.7 0.2 Top of Shielded 36.6 3.3 0.3 Base Touchable 7.3 1.7 0.2 Untouchable 7.6 1.7 0.2 Air Gap 6.3 1.8 0.3 Bottom Shielded 16.1 2.3 0.5 Touchable 25.5 2.9 Untouchable 25.5 2.9 Air Gap 25.5 2.9
- Values are mrem /hr.
- In beam rate on contact was not measured.
l
-Shielded: gauge in Off condition.
Touchable: gauge is resting on surface of a concrete block.
Untouchable: gauge is raised approximately 0.2" (0.5 cm) above surface.
Air Gap: gauge is raised approximately 2" (5.1 cm) above surface.
Top of Base: top of the lower half, electronic portion is removed.
i I~
1 i
{
f June 7, 1999 Scott S Iman, Presid nt Seaman Nuclear Corporation l
7315 South First Street Oak Creek, WI 53154
Dear Mr. Seaman:
Based on the information submitted in your letter dated March 30,1999, and subsequent j
letters, with enclosures thereto, we conclude that the amendment of the registration certificate NR-587-D-104-S is acceptable. A copy of the certificate has been forwarded to the appropriate reviewer for licensing action.
i Please be advised that you must distribute the product in accordance with the statements and representations contained in your application, with enclosures thereto, and the information set out in your registration certificate. As a general rule, you must request and obtain an
)
amendment to the certificate before you make changes or modifications to the information submitted to obtain the certificate.
Please read over the registration certificate in its entirety and notify us immediately of any errors or omissions.
You are obligated.to notify us promptly in writing should you decide to no longer manufacture or offer service support for the product.
1 Please be aware that, as a holder of an NRC registration, you may be subject to the NRC's licensing and inspection fees in accordance with 10 CFR Part 170, and annual fees in accordance with 10 CFR Part 171. If you have any questions concerning the fee requirements, please contact the License Fee and Debt Collection Branch at (301) 415-7544.
l if you have any questions, please contact me at (301) 415-5787 or Dr. John Jankovich at (301) 415 7904.
Sincerely,N Seung J. Lee, Mechanical Engineer Materials Safety and Inspection Branch Division of Industrial and Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards
Enclosure:
As stated W
Distribution:
IMNS r/f SSD-98-02 NE01 v SSD File # NR-587-D-104-S File Name: H:\\SJL\\NR587104. CMP Ta rec"M a copy of this document, indicate in the box: *C* = Copy without attachment / enclosure T = Copy with attachment / enclosure "N" = No copy OFFICE MSIB E
MSIB
,a l
C NAME SLee
( 1/
JJankovichgQ' DATE 06/02/99 06/ 7/99 V
OFFICIAL RECORD COPY 0T0600&
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES l
SAFETY EVALUATION OF DEVICE I
(
(AMENDED IN ITS ENTIRETY) l NQ1 NR-587-D-104-S DATE: June 7,1999 PAGE 1 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge MODEL:
C-100, C-200, C-300 l
MANUFACTURER / DISTRIBUTOR:
Seaman Nuclear Corporation
)
7315 South First Street i
Oak Creek, WI 53154 l
SEALED SOURCE MODEL DESIGNATION:
For Models C-100, C-200, and C-300:
Amersham Models: CDC.804, CDC.805, AMN.6002, AMN.Q1954
)
Du Pont Merck: NER-550 3M: 4P6M j
Nuclear Sources and Services: AN-HPG, AN-HP, GT-GHP For Models C-300:
Amersham Models: AMN. PES, AMN. '.'9 9 7, CDC.800 Gammatron Models: AN-HP, GT-GHP Isotope Products Laboratory Model: HEG-137 ISOTOPE:
MAXIMUM ACTIVITY:
Cesium-137 10 mci (370 MBq)
Americiam-241/ Beryllium 50 mci (1.85 GBq) f LEAK TEST FREOUENCY:
6 Months PRINCIPAL USE:
(G) Portable Moisture Density Gauges CUSTOM DEVICE:
YES X
NO
]lSou k l
I l
REGISTRY OF PADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 2 OF 1 DEVICE TYPE:
Portable Moisture Density Gauge DESCRIPTION:
The Model C-300 is a portable single piece unit, weighing about 37 pounds (16.8 kg), whereas the Models C-100 and C-200 are weighing about 45 pounds (20.4 kg).
When facing the gauge, the physical dimensions of C-100. C-200, and C-300 are:
External Dimensions Model C-100/C-200 C-300 inch cm inch cm Width 17 43 17 43 Depth (with optional Probe) 11.5 29 9.5 (11) 24 (28)
Height of gauge (with handle) 13 (15) 33 (38) 10.5 (13) 27 (33)
All Models incorporate a 50 mci (1.85 GBq) americium-241: beryllium sealed neutron source and an 10 mci (370 MBq) cesium-137 sea]ed gamma source enabling inspection of materials for moisture content and density.
The cesium-137 source is housed in a lead shield within the device and is rotated 180 between its On and Off position.
The source remains in the device at all times.
In the Model C-300, the lead shield for the cesium-137 source is aeld to the base of the meter with four stainless steel studs and tamper resistant nuts.
For additional strength, a plate is fastened with screws to the top of the shield and to the flange of the base.
In the Models C-100 and C-200, the lead shield is secured to the base with an aluminum bracket.
The bracket is secured to the base with four machine screws, and the lead is secured to the bracket with three self tapping screws.
For all Models, the On-Off mechanism, whose status is indicated by the position of the carrying handle, moves the cesium-137 source holder within its stationary shield inside the gauge.
The On-Off mechanism incorporates a 2 to 1 gear ratio which means that turning the handle 90* will rotate the source 180.
When the gauge is not in use, the source holder rests in the shielded position surrounded by lead.
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 3 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge DESCRIPTION (Cont' d) :
There'is no shutter for the americium-241: beryllium source.
The americium-241:bery11ium source is fixed at the gauge bottom in the main lead casting.
In the optional direct transmission mode, the source remains J
l protected in-the instrument housing and only the detector is placed in a probe external to the gauge.
The C-100, C-200, and C-300 gauges are designed so that the source positioning mechanism must be in the Off position for the gauge to'be transported.
To accomplish this, the shielding j
l mechanism is returned to the Off condition by lifting the handle from either of its two operating positions.
Approximately 3 ft-pounds (0.41 m-kg) of torque is required to overcome the l
positioning detent in the On condition.
Lifting the gauge by its handle, which is horizontal in the on condition, applies 27 ft-pounds (3.73 m-kg) of torque.
Lifting of the gauge by the handle will return the gauge to the Off condition.
Epoxy is used to retain-the sources within their holders.
This epoxy is insoluble in water and most common solvents.
Seaman has indicated there have been no epoxy failures in either the 20 year history of this type of gauge nor in the 35 years of Seaman Nuclear products.
The source holders must be heated to 600 F l
(316*C), a temperature that melts the lead in the source holder, to release the' source.
Seaman has demonstrated that the epoxy will withstand exposure to radiation experienced during the life of the_ device.
However, even if the epoxy were to fail, the sources would remain in'the housing due to the design of the shielding for the cesium-137 and americium-241: beryllium sources.
The Models C-100 and C-200 are of similar design to the Model C-300.
The only differences between the devices are overall dimensions, dimensions of some parts, and other minor differences internal to the device.
I
1 REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES l
SAFETY EVALUATION OF DEVICE l
(AMENDED IN ITS ENTIRETY) l EQ1 NR-587-D-104-S DATE: June 7, 1999 PAGE 4 OF 7 DEVICE TYPE 1 Portable Moisture Density Gauge LABELING:
The device is labeled in accordance with 10 CFR 20.1901.
Specifically, a label is adhered to the front of the lower section of the device and includes the device model number, serial, isotopes, activities, dates of assay, the trefoil symbol, and the words " Caution - Radioactive Material."
In addition, the device labeling identifies Seaman Nuclear.
When the top portion of the device (electronics) is removed, the statement "DO NOT DISASSEMBLE BEYOND THIS POINT." is labeled on all Models.
The On and Off position of the cesium-137 source is indicated by the position of the handle.
For the Model C-300, there are also figures next to the device read out that indicate the source condition based on the position of the handle.
DIAGRAM:
See Attachments 1 and 2.
CONDITIONS OF NORMAL USE:
The devices are designed for use under conventional field construction and testing conditions, including environmental ranges from 0 to 100% relative humidity, ambient temperatures -20 to 60 C (-4 to 14 0*F), and with the base in contact with material up to 191 C (376 F).
PROTOTYPE TESTING:
A prototype of the Model C-300 was subjected to and passed the l
following tests.
l Cold Cvele:
Eight hours at -12 C (10. 4 F).
j l
Hot Cycle:
Eight hours at 63 C (14 5 F).
l
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO1 NR-587-D-104-S DATE: June 7,1999 PAGE 5 OF 7
?
DEVICE TYPE:
Portable Moisture Density Gauge PROTOTYPE TESTING (Cont'd):
Thermal Shock: Hot (63"C [14 5
- F] ) and cold (-12"C [10.4*F))
environments were established.
The device was subjected.to the hot environment for 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and then transferred to the cold er.vironment for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Then, the device was subjected to the cold environment for 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and then transferred to the hot environment for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Hot Surface:
A 191 C (376 F) surface was established. The device was placed on the surface for 20 minutes and then' allowed to cool to ambient (20 C [68"F]).
The device was then cycled, 6 times, between the 191"C (376 F) surface for 5 minutes and an ambient surface for 5 minutes.
Vibration:
Device was fastened to a vibratory test fixture for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The frequency was 12.5 Hz and the amplitude was 0.125" (0.3 cm) in one direction and 0.018" (0.46 mm) in the other direction.
The device was rotated after 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
Droo Test:
Dropped onto an asphalt surface from 1 m (3.3').
Also dropped 5 times onto a 1" (2. 54 cm) diameter steel ball from a height of l' (30.5 cm).
Based.on design similarities, it is expected that the Models C-100 and C-200 vuold withstand the same testing.
EXTERNAL RADIATION LEVELS:
The table in Attachment 2 includes the maximum combined gamma and c
neutron dose rates for the Model C-300, containing 10 mci (370 MBq) of cesium-137 and 50 mci (1.85 Gbq) of americium-241/ beryllium, in a number of different locations and gauging modes.
Dose rates for the Models C-100 and C-200 would be a maximum of 10 percent higher in some cases than those listed in the Attachment 2 according to the manufacturcar.
i REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE l
(AMENDED IN ITS ENTIRETY) l l
l NO: NR-587-D-104-S DATE: June 7, 1949 PAGE 6 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge OUALITY ASSURANCE AND CONTBOL:
l Seaman Nuclear Corporation maintains a quality assurance and control program which has been deemed acceptable for licensing purposes by NRC.
A copy of the program is on file with NRC.
I I
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
e The devices shall be distributed to specific licensees of l
the NRC or Agreement States.
l The device shall be leak tested at intervals not to exceed t
l 6 months using techniques capable of detecting 0.005 mci (185 Bq) of removable contamination.
e Handling, storage, use, transfer, and disposal: To be j
determined by the licensing authority.
e This registration sheet and the information contained within l
the references shall not be changed without the written l
consent of the NRC.
l l
SAFETY ANALYSIS
SUMMARY
j Based on review of the Models C-100, C-200, and C-300 and the information and test data cited below, we conclude that the devices are acceptable for licensing purposes.
Furthermore, we conclude that the devices would be expected to maintain their integrity for normal conditions of use and accidental conditions which might occur during uses specified in this certificate.
I
REFERENCES:
1 The following documents for the Models C-100, C-200, and C-300 portable moisture density gauges are hereby incorporated by reference and are made a part of this registration certificate:
ret *STRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
+$
NO: NR-587-D-104-S DATE : June 7,1999 PAGE 7 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge REFERENCES (Cont'd):
e Seaman Nuclear Corporation's letters dated May 26, 1999, March 31, 1999, March 30, 1999, October 8, 1998, September 16, 1998, July 31, 1998, June 1, 1998, December 30, 1997, and December 23, 1997, with enclosures thereto.
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission d""" 7' 1999 Reviewer:
/
Date:
Seung J. Vee I
(*
ts, su Date:
June 7, 1999 Concurrence:
John P.
Jankovich
REGISTRY OF. RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
N_Qi NR-587-D-104-S DATE: June 7,1999 ATTACHMENT 1 1
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Position of Labeling
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Models C-100, C-200, and C-300 c,;
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Position l
Operating Positions
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY) i l
NO: NR-587-D-104-S DATE: June 7,1999 ATTACHMENT 2 Dose Rate for Model C-300 Distance Side Gauge Mode Contact 30 cm (0.98")
1m (3.3')
Front Shielded 10.1 1.7 0.4 Touchable 16.4 1.9 0.6 Untouchable 17.5 2.2 0.5 Air Gap 71.0 2.6 0.7 Back Shielded 11.8 1.8 0.3 Touchable 17.8 2.4 0.3 Untouchable 20.1 2.5 0.4 Air Gap 75.9 2.8 0.5 Right Shielded 17.1 1.6 0.3 Touchable 24.1 2.6 0.5 Untouchable 24.1 2.8 0.5 Air Gap 35.7 2.9 0.6 j
Left Shielded 2.7 0.9 0.2 Touchable 2.8 0.7 0.2 Untouchable 3.1 0.7 0.2 l
Air Gap 3.6 0.9 0.2 l
Top Shielded 6.1 1.4 0.2 Touchable 2.0 0.5 0.2 Untouchable 2.0 0.6 0.2 Air Gap 2.0 0.7 0.2 Top of Shielded 36.6 3.3 0.3 1
Base Touchable 7.3 1.7 0.2
]
Untouchable 7.6 1.7 0.2 Air Gap 6.3 1.8 0.3 i
Bottom Shielded 16.1 2.3 0.5 25.5 2.9 j
Touchable 25.5 2.9 Untouchable f
25.5 2.9 Air Gap Values are mrem /hr.
- In beam rate on contact was not measured.
Shielded: gauge in Off condition.
i Touchable: gauge is resting on surface of a concrete block.
Untouchable: gauge is raised approximately 0.2" (0.5 cm) above surface.
Air Gap: gauge is raised approximately 2" (5.1 cm) above surface.
Top of Base: top of the lower half, electronic portion is removed.
June 7, 1999 i:'
Scott Snmin, Presid n!
Seaman Nuclear Corporation 7315 South First Street Oak Creek, WI 53154 -
l
Dear Mr. Seaman:
i Based on the information submitted in your letter dated March 30,1999, and subsequent l
letters, with enclosures thereto, we conclude that the amendment of the registration certificate i
NR-587-D-104-S is acceptable. A copy of the certificate has been forwarded to the l
appropriate reviewer for licensing action.
Please be advised that you must distribute the product in accordance with the statements and representations contained in your application, with enclosures thereto, and the information set out in your registration certificate. As a general rule, you must request and obtain an amendment to the certificate before you make changes or modifications to the information J
l l
submitted to obtain the certificate.
Please read over the registration certificate in its entirety and notify us immediately of any errors or omissions, You are obligated to notify us promptly in writing should you decide to no longer manufacture or offer service support for the product.
Please be aware that, as a holder of an NRC registration, you may be subject to the NRC's licensing and inspection fees in accordance with 10 CFR Part 170, and annual fees in accordance with 10 CFR Part 171. If you have any questions concerning the fee I
requirements, please contact the License Fee and Debt Collection Branch at (301) 415-7544.
l If you have any questions, please contact me at (301) 415-5787 or Dr. John Jankovich at (301) 415-7904.
Sincerely, N
Seung J. Lee, Mechanical Engineer Materials Safety and Inspection Branch Division of Industrial and Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards
Enclosure:
As stated W
Distribution:
IMNS r/f SSD-98-02 NE01 v SSD File # NR-587-D-104-S File Name: H:\\SJL\\NR587104. CMP Te rec"Ive a copy of this document, Indicate in the box: "C" = Copy wthout attachment / enclosure "E" = Copy wth attachment / enclosure "N" = No copy l
OFFICE MSIB E
MSIB
,a l
l l
E l
NAME SLee
( //
JJankovichdQ l
DATE 06/02/99 06/ 7/99 J"
OFFICIAL RECORD COPY t
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 1 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge MODEL:
C-100, C-200, C-300 MANUFACTURER / DISTRIBUTOR:
Seaman Nuclear Corporation 7315 South First Street Oak Creek, WI 53154 SEALED SOURCE MODEL DESIGNATION:
For Models C-100, C-200, and C-300:
Amersham Models: CDC 804, CDC.805, AMN.6002, AMN.Q1954 l
Du Pont Merck: NER-550 l
3M: 4P6M Nuclear Sources and Services: AN-HPG, AN-HP, GT-GHP l
For Models C-300:
Amersham Models: AMN. PES, AMN.V997, CDC.800 Gammatron Models: AN-HP, GT-GHP l
l Isotope Products Laboratory Model: HEG-137 l
ISOTOPE:
MAXIMUM ACTIVITY:
Cesium-137 10 mci (370 MBq)
Americium-241/ Beryllium 50 mci (1.85 GBq)
LEAK TEST FREOUENCY:
6 Months PRINCIPAL USE:
(G) Portable Moisture Density Gauges CUSTOM DEVICE:
YES X
NO
/T
/
Dl 6000%
pg uiuu g
r REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
E01 NR-587-D-104-S DATE: June 7, 1999 PAGE 2 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge DESCRIPTION:
The Model C-300 is a pcrtable single piece unit, weighing about 37 pounds (16.8 kg), whereas the Models C-100 and C-200 are weighing about 45 pounds (20.4 kg). -When facing the gauge, the physical dimensions of C-100, C-200, and C-300 are:
l External Diraensions i
Model C-100/C-200 C-300 inch am inch cm Width 17 43 17 43 Depth (with optional Probe) 11.5 29 9.5 (11) 24 (28)
Height of gauge (with handle) 13 (15) 33 (38) 10.5 (13) 27 (33)
All Models incorporate a 50 mci (1.85 GBq) americium-241: beryllium sealed neutron source and an 10 mci (370 MBq) cesium-137 sealed gamma source enabling inspection of materials for moisture content and density.
The cesium-137 source is housed in a lead shield within the device and is rotated 180* between its On and Off position.
The I
source remains in the device at all times.
In the Model C-300,
-the lead shield for the cesium-137 source is held to the base of the meter with four stainless steel studs and tamper resistant nuts.
For additional strength, a plate is fastened with screws to the top of the shield and to the flange of the base.
In the Models C-100 and C-200, the lead shield is secured to the base with an aluminum bracket.
The bracket is secured to the base with four. machine screws, and the lead is secured to the bracket with three self tapping screws.
For all Models, the On-Off mechanism, whose status is indicated by the position of the carrying handle, moves the cesium-137 source holder within its stationary shield inside the gauge.
The On-Off mechanism incorporates a 2 to 1 gear ratio which means that turning the handle 90 will rotate the source 180*.
When the gauge is not in use, the source holder rests in the shielded position surrounded by lead.
[
IL.
I REGISTRY OF RADIOACTIVE SEALED SOURCES AND DF~ ~ES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ1 NR-587-D-104-S DATE: June 7, 1999 PAGE 3 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge DESCRIPTION (Cont'd):
There is no shutter for the americium-241: beryllium source.
The I
americium-241:bery111um source is fixed at the gauge bottom in i
the main lead casting.
In the optional direct transmission mode, the source remains protected in the instrument housing and only the detector is placed in a probe external to the gauge.
l The C-100, C-200, and C-300 gauges are designed so that the l
source positioning mechanism must be in the Off position for the gauge to be transported.
To accomplish this, the shielding mechanism is returned to the Off condition by lifting the handle from either of its two operating positions.
Approximately 3 ft-pounds (0.41 m-kg) of torque is required to overcome the positioning detent in the On condition.
Lifting the gauge by its handle, which is horizontal in the on condition, applies 27 ft pounds (3.73 m-kg) of torque.
Lifting of the gauge by the handle will return the gauge to the Off condition.
Epoxy is used to retain-the sources within their holders.
This epoxy is insoluble in water and most common solvents.
Seaman has indicated there have been no epoxy failures in either the 20 year history of this type of gauge nor in the 35 years of Seaman Nuclear products.
The source holders must be heated to 600*F (316 C), a temperature that melts the lead in the source holder, to release the. source.
Seaman has demonstrated that the epoxy will withstand exposure to radiation experienced during the life of the device.
However, even if the epoxy were to fail, the sources would remain in the housing due to the design of the l
shielding for the cesium-137 and americium-241: beryllium sources.
The Models C-100 and C-200 are of similar design to the Model C-300.
The only differences between the devices are overall dimensions, dimensions of some parts, and other minor differences internal to the device.
l
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 4 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge i
LABELING:
The device is labeled in accordance with 10 CFR 20.1901.
Specifically, a label is adhered to the front of the lower section of the device and includes the device model number, serial, isotopes, activities, dates of assay, the trefoil symbol, and the words " Caution - Radioactive Material."
In addition, the device labeling identifies Seaman Nuclear.
When the top portion of the device (electronics) is removed, the statement "DO NOT DISASSEMBLE BEYOND THIS POINT." is labeled on all Models.
The On and off position of the cesium-137 source is indicated by the position of the handle.
For the Model C-300, there are also figures next to the device read out that indicate the source condition based on the position of the handle.
i DIAGRAM:
j See Attachments 1 and 2.
l l
CONDITIONS OF NOPMAL USE:
l l
The devices are designed for use under conventional field construction and testing conditions, including environmental ranges from 0 to 100% relative humidity, ambient temperatures -20 I
to 60*C (-4 to 14 0 F), and with the base in contact with material up to 191*C ( 376*F).
l PROTOTYPE TESTING:
A prototype of the Model C-300 was subjected to and passed the following tests.
Cold Cycle:
Eight hours at -12 C (10. 4
- F).
Hot Cycle:
Eight hours at 63 C ( 14 5 F).
I
r l
1 I
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE : Jmae 7,1999 PAGE 5 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge PROTOTYPE TESTING (Cont'd):
I Thermal Shock: Hot (63 C [145 F)) and cold (-12 C [10.4 F])
environments were established.
The device was l
subjected to the hot environment for 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and then transferred to the cold environment for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Then, the device was subjected to the cold environment for 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and then transferred l
to the hot environment for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
l Hot Surface:
A 191 C (376*F) surface was established. The 1
device was placed on the surface for 20 minutes
{
and then' allowed to cool to ambient (20 C [68"F]).
The device was then cycled, 6 times, between the 191 C (376*F) surface for 5 minutes and an ambient l
surface for 5 minutes.
I Vibration:
Device was fastened to a vibratory test fixture j
for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The frequency was 12.5 Hz and the amplitude was 0.125" (0.3 cm) in one direction and 0.018" (0. 4 6 su) in the other direction.
The device was rotated after 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
l Dron Test:
Dropped onto an asphalt surface from 1 m (3.3').
l Also dropped 5 times onto a 1" (2.54 cm) diameter j
steel ball from a height of l' (30.5 cm).
Based on design similarities, it is expected that the Models C-100 and C-200 would withstand the same testing.
~
EXTERNAL RADIATION LEVELS:
The table in Attachment 2 includes the maximum combined gamma and
)
neutron dose rates for the Model C-300, containing 10 mci l
(370 MBq) of cesium-137 and 50 mci (1.85 Gbq) of j
americium-241/ beryllium, in a number of different locations and j
gauging modes.
Dose rates for the Models C-100 and C-200 would be a maximum of 10 percent higher in some cases than those listed in the Attachment 2 according to the manufacturer.
J l
l l
l L
I REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7, 1999 PAGE 6 OF 7 l
I DEVICE TYPE:
Portable Moisture Density Gauge OUALITY ASSURANCE AND CONTROL:
Seaman Nuclear Corporation maintains a quality assurance and control program which has been deemed acceptable for licensing purposes by NRC.
A copy of the program is on file with NRC.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
e The devices shall be distributed to specific licensees of the NRC or Agreement States.
I e
The device shall be leak tested at intervals not to exceed 6 months using techniques capable of detecting 0.005 mci (185 Bq) of removable contamination.
e Handling, storage,,use, transfer, and disposal:
he j
determined by the licensing authority.
j e
This registration sheet and the information contained within the references shall not be changed without the written consent of the NRC.
SAFETY ANALYSIS
SUMMARY
Based on review of the Models C-100, C-200, and C-300 and the information and test data cited below, we conclude that the devices are acceptable for licensing purposes.
Furthermore, we conclude that the devices would be expected to maintain their integrity for normal conditions of use and accidental conditions which might occur during uses specified in this certificate.
REFERENCES:
l l
The following documents for the Models C-100, C-200, and C-300 f
portable moisture density gauges are hereby incorporated by l
reference and are made a part of t".is registration certificate:
i
E REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7,1999 PAGE 7 OF 7 DEVICE TYPE:
Portable Moisture Density Gauge REFERENCES (Cont'd):
Seaman Nuclear Corporation's letters dated May 26, 1999, March 31, 1999, March 30, 1999, October 8, 1998, September 16, 1998, July 31, 1998, June 1, 1998, December 30, 1997, and December 23, 1997, with enclosures thereto.
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission 27 3""*s ' 1999 Reviewer:
/
7 Date:
Seung J. Vee I
('
to SU Date:
June 7, 1999 Concurrence:
John P.
Jankovich l
l l
l l
1 4
i*
1
. REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7,1999 ATTACHMENT 1 l
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/9 Position of Labeling N
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Models C-100, C-200, and C-300 t
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l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE i
(AMENDED IN ITS ENTIRETY)
NO: NR-587-D-104-S DATE: June 7,1999 ATTACHMENT 2 Dose Rate for Model C-300 Distance Side Gauge Mode Contact 30 cm (0.98")
1m (3.3 ')
Front Shielded 10.1 1.7 0.4 Touchable 16.4 1.9 0.6 Untouchable 17.5 2.2 0.5 j
Air Gap 71.0 2.6 0.7 Back Shielded 11.8 1.8 0.3 Touchable 17.8 2.4 0.3 Untouchable 20.1 2.5 0.4 Air Gap 75.9 2.8 0.5 Right Shielded 17.1 1.6 0.3 Touchable 24.1 2.6 0.5 Untouchable 24.1 2.8 0.5 Air Gap 35.7 2.9 0.6 Left Shielded 2.7 0.9 0.2 Touchable 2.8 0.7 0.2 Untouchable 3.1 0.7 0.2 Air Gap 3.6 0.9 0.2 Top Shielded 6.1 1.4 0.2 Touchable 2.0 0.5 0.2 Untouchable 2.0 0.6 0.2 Air Gap 2.0 0.7 0.2 Top of Shielded 36.6 3.3 0.3 Base Touchable 7.3 1.7 0.2 Untouchable 7.6 1.7 0.2 Air Gap 6.3 1.8 0.3 Bottom Shielded 16.1 2.3 0.5 Touchable 25.5 2.9 Untouchable 25.5 2.9 Air Gap 25.5 2.9 Values are mrem /hr.
- In beam rate on contact was not measured.
Shielded: gauge in off condition.
Touchable: gauge is resting on surface of a concrete block.
Untouchable: gauge is raised approximately 0.2" (0.5 cm) above surface.
Air Gap: gauge is raised approximately 2" (5.1 cm) above surface.
Top of Base: top of the lower half, electronic portion is removed.
L.