6.0 Embedded Penetrations


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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