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API PLAN

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LP ENGG

Mechanical
Joined
Oct 2, 2024
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2
Location
IN
Hi,
I received a query from a customer who has a vertical pump with a component seal and a labyrinth, with pressurized air supplied between the seal and labyrinth. He wants a dual seal to prevent any leakage to the outside (the fluid is water used in a nuclear plant). I have suggested a dual cartridge seal with a dry, non-contact seal on the outboard side. The suggested plans are API Plan 13 for the inboard side and API Plan 75 for condensed water collection, with API Plan 76 for vapor collection. Is it appropriate to use both plans simultaneously, particularly in vertical pumps? If not, would a combination of API Plans 72 and 75 be sufficient?
 
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