63138-US-200110
43
Preliminary Survey
1.
Ensure that the survey meter is calibrated and operational.
2.
Conduct a radiation survey of the mounted unit by surveying the source
holder and detector, omni-directionally, one foot from the surface.
3.
If the radiation field is normal, less than 50 mSv/hr (5 mrem/hr) at 30 cm
(12") for most VEGA Americas source holders, proceed with the leak test.
4.
If the radiation field is greater than 50 mSv/hr (5 mrem/hr) at 30 cm (12"),
complete the following: Post restrictions of the area, if required.
5.
Verify with the manufacturer that this condition is normal for the type of
source and source holder you are installing.
Perform a Leak Test
1.
Remove the zip-top bag containing the swab stick.
2.
Write the source serial number or other identification on the bag.
3.
Open the zip-top bag and grasp the swab stick by the end opposite of the
fiber tip.
4.
Wipe the external surface of the source holder by using the fiber-tipped end
of the swab stick. Wipe the locations where contamination would most likely
accumulate in the event the source capsule was leaking.
5.
Place the swab stick into the zip-top plastic bag and close.
6.
Put the zip-top bag in an envelope and seal it.
Do not touch the fiber tipped end or allow the tip to touch other
objects since this could spread contamination if the source is
leaking. If the swab stick contains a significant amount of
radioactive material, send an emergency notification, by telephone
immediately. Contact the appropriate nuclear regulatory agency
and VEGA Americas for assistance. You must make arrangements
with VEGA Americas, or another specifically licensed person to take
the source out of service.
!
CAUTION
Summary of Contents for SHLD 2
Page 1: ...Operating Instructions SHLD 2 Source Holder Document ID 63138 Radiometric...
Page 2: ......
Page 8: ...6 63138 US 200110 NOTES...
Page 12: ...10 63138 US 200110 NOTES...
Page 26: ...24 63138 US 200110 NOTES...
Page 42: ...40 63138 US 200110 NOTES...
Page 56: ...54 63138 US 200110 NOTES...
Page 68: ...66 63138 US 200110 NOTES...
Page 78: ...76 63138 US 200110 9 2 Dimensions Figure 9 7 Source Holder SHLD 2 Standard Version...
Page 79: ...63138 US 200110 77 Figure 9 8 SHLD 2 Beam Angles Figure 9 9 SHLD 2 Height for Source Exchange...
Page 80: ...78 63138 US 200110 Figure 9 10 Source Holder SHLD 2 with Limit Switch...
Page 81: ...63138 US 200110 79 Figure 9 11 Source Holder SHLD 2 with Interlock Safety Switch...
Page 82: ...80 63138 US 200110 Figure 9 12 Source Holder SHLD 2 with Air Actuator...
Page 83: ...63138 US 200110 81 Figure 9 13 Source Holder SHLD 2 with Air Actuator and Limit Switch...
Page 84: ...82 63138 US 200110 Figure 9 14 Source Holder SHLD 2 Explosion Proof with Limit Switch...
Page 86: ...84 63138 US 200110 NOTES...
Page 87: ......