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Understanding Heat Exchanger Reading 02

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E-4.6 DIAPHRAGM INSTALLATION PROCEDURE<br />

(1) Position diaphragm and tighten to remove all voids between diaphragm<br />

and component to which it will be welded. This may be accomplished by<br />

bolting the cover in place, by a series of clamps or any other means that<br />

guarantees that the diaphragm will not move during final boltup and crack<br />

the weld.<br />

(2) Make the diaphragm to component weld and liquid penetrant inspect.<br />

(3) Install cover and tighten studs to required torque or tension.<br />

(4) Liquid penetrant inspect weld again after tightening studs.<br />

Charlie Chong/ Fion Zhang

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