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Manfred Cortes Laverde
1) According to the NFPA 24 edition 2013, in particular with Chapter 6 valves, specifically the number 6.6 and 6.6.1 Sectional Valves, The following question is developed: OS&Y sectional valves are allowed unlisted for fire networks?   Según la norma NFPA 24 edición 2013, en particular con el Capítulo 6 válvulas, específicamente el numeral 6.6… (Show more)
in Fire Protection Systems
Kevin Wedman
Are there any exceptions that allow for more than five appurtenances between section valves on the main line?
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Thomas Waghorn
Hi  I have a question regarding the distance from the hsw sprinkler to a ventilation outlet that is placed about 25mm from the sprinkler head. The sprinkler deflector is not obstructed by the ventilation. But my concern is that the air will cool the sprinkler so much that the sprinkler activation will be delayed. Is this ok? I can't find anything… (Show more)
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BALAJI VENKATESAN
Dear All,   In firefighting pipelines, Dia 150mm maximum how many sprinklers can be installed (light / ordinary Hazard).    Maxi sprinklers count with loop / Maxi sprinklers with the loop.   kindly suggest!!!
in Fire Protection Systems
Van Vu Nguyen
Dear NFPA,   My site has an issue with the fire main, it could not maintain the supply pressure. I suspect there is a leakage with the underground fire main. In such scenarios, what actions/techniques are recommended to identify the leakage point?   Thanks very much for your support. Vu
in Fire Protection Systems
BALAJI VENKATESAN
Hi all, Kindly check for the Unit in the attached image is that 0.16 gpm/sq.ft is equal to 6.5 mm/sq.meter or 6.5 lpm/sq.meter
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Ponnappa BD
Which is the control panel type reliable/fool proof for industrial fire protection system.? I have come across PCB type and Relay type, relay being conventional but more reliable than the other ..is there any better system of control?
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Sebastian Nowak
Good morning,   I would like to ask about PreAction system with non or single interlock. For that type of the system, is it should be treated as dry system? Because based on 7.3.2.2 it looks like for single interlock system it can be designed as water system, and there are no restriction like for double-interlock system which need to be designed… (Show more)
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Hafeel rahman
When Terrace tank is required, how to distribute both UG Tank and terrace tank.. How to calculate the size of Down comer
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Fahimeh Behjat
Hello everybody, I appreciate if you answer my question,Is it necessary or optional to have a drain valve for water sprinklers of a warehouse????? Thanks in advance for sharing your knowledge.
in Fire Protection Systems
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