@ ashtree: As the safety shower will only be operated in case of emergency, there will be no flow during standby operation so the pump will go to shutoff head if the intrinsic pump pressure control should fail? Is this a possible scenario?
In case of pump failure, for example: the pump is not able to control the discharge pressure anymore. In that case, I will read a higher pressure on the pressure gauge due to the fact that my pump will go to shutoff head or is this not correct?
Thanks for the link, I have never seen this type...
LittleInch, Can you please explain in more detail why this doesn't sound like a good idea? The only thing I can think off is the fact that these VFD booster pumps are typically placed in systems where there is a strong demand (for example a plumbing system), which is not the case for safety...
Thank you for the response LittleInch. The problem in my case is that it was already designed by someone before me (I'm not able to contact this person regarding details of his calculations as he left the company) so I'm trying to understand his design. To make things clear: it is the pump's...
@EdStainless: I made some mistakes in my first post, sorry for that. It is the booster pump's discharge pressure which should be 75 psig. This means for my case that the required pump head shall be between approximately 10 and 23 psig depending on the service pressure. This means that no where...
Thank you for the replies.
@ashtree: I forgot to mention the flow rate (22,5 gpm) I used for the calculations. The current safety shower system is very old so no information regarding working pressure of the safety showers is available. We also assume that the likelihood of two showers being...
Dear all,
I'm currently designing a centrifugal pump to boost the pressure in an operating safety shower system. As I'm relatively new to pump sizing, I have some technical questions.
The current system consists of 3 safety showers/eye baths located on three different floors of a 100ft...
