Whenever the tubes have to pass through some floor
slab or a wall an embedded penetration is used. This serves two purposes viz.
a. Supporting the tube
b. Making a leak tight passage. This prevents
streaming of radioactivity from an active area to a non-active area
Guidelines for EP Design
Following general guidelines should be followed:
(a)
There should be enough space between two penetrations so that tube fittings (bore-through
connector) can be installed easily using spanner or a suitable tool.
(b)
Lead shielding balls are filled in the floor penetration EPs.
(c)
In floor penetration EPs bore through connector is installed only on the top opening
of the EP. Bottom opening is left as it is. This allows thermal expansion of
the tube through the EP and no additional stress is caused on the EP.
(d)
In the top plate of a floor EP a hole is made and a suitable plug is installed
in it. This hole is used to fill the Steel/lead shielding balls in the EP.
(e)
In the bottom plate of a floor EP a hole is made and a suitable plug is
installed in it. This hole is used to take off the Steel/lead shielding balls
from the EP.
Note: For further details on the EP installation
refer sect ion 12.0 of this technical note.
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Good Guidelines on EP Design. keep posting good information.
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