Thanks Eng. Irfan for the video. I have a question roaming my mind: Let’s say we have 3 pumps (joceky, electric, diesel), in normal situation (standby condition) What readings should I expect to see on each suction/discharge line gauge? Should they all be identical?
Pressure gauge installed on the the discharge line is aim to indicate the discharge line pressure. Since pressue gauge is located on the discharge side of pump and before NRV it will indicate static pressure, i.e. Fire water tank static pressure... Let me know if you have different opinion.
@@irfancfps but is not the sensing line supposed to be between nrv and pump casing? In this case how can the pressure switch detect the drop in the system and activates?
@@VikSmiVlogs but is not the sensing line supposed to be between nrv and pump casing? In this case how can the pressure switch detect the drop in the system and activates?
To ensure that the pump house remains fire-rated, introducing open areas such as provisions for the installation of a ventilation system, if needed, would compromise the integrity of the fire-rated structure we aim to maintain... ???Am i correct sir?
Flexible connection is not usually installed in fire pumps suction and discharge piping. However, Please refer to NFPA 20 (Ed 2019), Section 4.16.6.5, flexible coupling for strain relief can be used on suction piping.
There is no specific terminology for suction side flange. The type of flange can be either slip on flange or raised face flange to be considered based on the fire pump suction side flange. For the water tank, a puddle flange will be installed. Let me know for any further queries.
Distance of flowmeter to either isolation valves should be as recomended by the meter manufacturer. This is as per NFPA 20 2022, A Explanatory notes, A.4.22.1.3 (1) and figure A.4.22.1.3(a) and A.4.22.1.3 (b)
Hi sir, I've a gneral doubt. Why fire pumps are not allowed to be installed on rooftop.? My opinion is, if the fire pumps are installed on rooftop in a dedicated room, it is okay and also it will increase pump efficiency due to gravity flow . But some cons are, during emergency needs it will be inaccessible but other than this are there any design related issues or any logical reasons.? Requesting your answer. Thanks is advance
See if u have high rise buildings, then u can think about that.. but due to the increase in pressures, u need to install pressure reducing valves in each floor and there will be a risk if u install on above floors..Ultimately it will depend on project specifications and client requirements.
good explaination. thank you.
Thank you
Thanks for this excellent video. It helps me a lot
Pls share with others as well so that they can benefit from my videos
Exlent sir
Thanks and welcome
Mashallah Allhamdulillah
Thanks
thank you sir, thank you soo much
Most welcome. Please do share with others as well so that they could benefit from my videos
Thanks sir
Most welcome.
Excellent video sir. Please make video on cable size and cable tray calculation for fire pumps
Sure. Very soon
Thanks Eng. Irfan for the video.
I have a question roaming my mind:
Let’s say we have 3 pumps (joceky, electric, diesel), in normal situation (standby condition)
What readings should I expect to see on each suction/discharge line gauge?
Should they all be identical?
When pumps are not running, discharge guage reading is zero or slightly high since there is nrv in discharge line.
Pressure gauge installed on the the discharge line is aim to indicate the discharge line pressure. Since pressue gauge is located on the discharge side of pump and before NRV it will indicate static pressure, i.e. Fire water tank static pressure... Let me know if you have different opinion.
@@irfancfps but is not the sensing line supposed to be between nrv and pump casing?
In this case how can the pressure switch detect the drop in the system and activates?
@@VikSmiVlogs but is not the sensing line supposed to be between nrv and pump casing?
In this case how can the pressure switch detect the drop in the system and activates?
To ensure that the pump house remains fire-rated, introducing open areas such as provisions for the installation of a ventilation system, if needed, would compromise the integrity of the fire-rated structure we aim to maintain... ???Am i correct sir?
No. As per nfpa 20 there is no such exception
Hi Sir, please advise the functions of pump controllers and cables sizes required from pump to controllers, different types of starters etc..
Will make a note and create one video on that.
Can you make foam suppression system calculation video?
Ya definetly. Will make video once i start training module on foam systems. Thanks for your suggestion.
Where do I usually find the flexible connector in terms of location in my piping? And Is it required on all systems?
Flexible connection is not usually installed in fire pumps suction and discharge piping. However, Please refer to NFPA 20 (Ed 2019), Section 4.16.6.5, flexible coupling for strain relief can be used on suction piping.
How to design the ventilation system for fire pump room. Any documents ?
I already mention the requirements in the video.
What is the flange used in suction side of pumps and water tank called?
There is no specific terminology for suction side flange. The type of flange can be either slip on flange or raised face flange to be considered based on the fire pump suction side flange. For the water tank, a puddle flange will be installed. Let me know for any further queries.
what does fire rating means?
This is separate concept. Will make a video soon. However just google it u will get the answer
Distance of flowmeter to either isolation valves should be as recomended by the meter manufacturer. This is as per NFPA 20 2022, A Explanatory notes, A.4.22.1.3 (1) and figure A.4.22.1.3(a) and A.4.22.1.3 (b)
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Hi sir, I've a gneral doubt. Why fire pumps are not allowed to be installed on rooftop.? My opinion is, if the fire pumps are installed on rooftop in a dedicated room, it is okay and also it will increase pump efficiency due to gravity flow . But some cons are, during emergency needs it will be inaccessible but other than this are there any design related issues or any logical reasons.? Requesting your answer. Thanks is advance
See if u have high rise buildings, then u can think about that.. but due to the increase in pressures, u need to install pressure reducing valves in each floor and there will be a risk if u install on above floors..Ultimately it will depend on project specifications and client requirements.
@@irfancfps thanks sir..
Why is PRV line not necessary for Electric Pump set up?
Please refer section 4.2 of NFPA 20 (Ed 2019). Where Electric variable speed fire pump is installed that time we can install Pressure relief valve.
Where is antivortex plate?
It will be installed in the tank
Where is antivortex plate?
It’s in water tank. Puddle flange is with vortex plate only.