1 reply to this topic

[ashleysilver]

Hello, 

 

For the disposal water tank, I have observed a PSAL and no sign of PSAH on the tank. I'm failing to see how critical PSAL is with respect to PSAH. Why would we be MORE concerned to protect the tank from low pressure rather than high pressure? When there's low pressure, the following actions are taken:

1) Inlet is shut

2) Ejector is shut 
3) Outlet is shut

Why are we closing the inlet? The last two seem to make sense but the first point doesn't. 

 

I've also seen that for PSAH (in other schemes online), we tend to close the ejector. Isn't the ejector's purpose to 'reduce the pressure' so, why are we shutting it in case of high pressure. 

 

Thank you.

[rajprocess]

HI,

 

Can you share the drawing of the tank , more details are required such as the how the tank is vented? is there any safe gaurding such as N2 purge, breather valve. What is the material in the tank?

how above information is required to understand the system and support accordingly.

 

Thanks & Regards,