Recent content by jejaram

Thank you all for your replies.

Hi Recently I was visiting a power station and someone mentioned there were new requirements by NFPA 20 for pumps to be physically separated from each other by a wall. I've never seen this anywhere. I read through NFPA 20 and did not find anything regarding this matter. Could someone please...

Thanks a lot Tom, that seems to cover my needs

Thanks for the answers and the link and I apologize for not being more specific. The system I was referring to is one fed by their own water supply but just using gravity, hence pumpless. The design is correct and the amount of water and the hydraulic head are correct. The reason to do a...

The answer might seem obvious to some of you but this is the first time I've faced a fire protection system installation like this (without a pump), so please bear with me. The question in the thread title (which I had to summarize due to lenght constraints)is regarding the annual performance...

Thanks a lot. What you said makes a lot of sense.

I'll start by saying that I am very familiar of physicochemical analysis of oil for different rotating equipment such as turbines and pumps, but the case I have now is a large size pump that uses grease for lubrication, not oil but just grease. So I was wondering if someone could recommend if...

Excuse me if I didn't explain myself correctly. By plastic or rubber hose I meant to ask if these are allowed as sight glasses or if as the name implies, such visual level aids must be made out of glass.

Hi I think to remember that plastic or rubber hoses (maybe they are called tubes or pipes) used to "read" the fuel level of the motor of a fire pump are not allowed. Am I right? If so, could someone please tell me the code (and paragraph if possible) where this is forbidden?

Hi Last week I read about the University of Stavanger in Norway running a gas turbine purely on hydrogen but despite the several artickes I checked, none mentioned the power of the turbine and the ones that gave more information about tbis issue, said it was a micro turbine. Does anyone have...

Hi Thanks for your answers. Thank you stevenal, I found what I was looking for at IEEE 484 as you suggested. In case anyone is interested, my question was about a battery bank that is the energy backup for the auxiliary equipment at a thermoelectrical plant, that if got disconnected, well you...

Hi Someone mentioned to me that in seismic activity prone areas, battery banks should have a type of "wedge" (sorry if this is not the right word in English) between the first and the last batteries and their corresponding sides of the frame to prevent that in case of an earthquake, the...

BrianPetersen (Mechanical)9 Jul 20 11:33 "Be careful with that train of thought. If taken too far, it will lead to absolutely no innovation being possible ever again" I don't make the rules, I just have to follow them. IRstuff (Aerospace)9 Jul 20 14:43 "Seems to me you are asking a different...

Thanks EdStainless for your answer. I mean combustion turbines. Where can I find the "installed base and installation dates"? Even though manufacturers warranty covers the property damage, it doesn't cover the business income loss and that is why insurance companies are not too eager to...

Hi, In my job as a loss control engineer for an insurance company I come across different turbines, some are well known and some I've never heard of them before and determining if that specific series has been in operation for enough time is key to my analysis. So my question is if there is...