Fire Protection Systems

abdulrafay80 in Fire Protection Systems3 days ago (Show more)

SIDE WALL SPRINKLER INSTALLATION IN CEILING WITH BEAMS

I am designing sprinkler system. In the ceiling there are lots of beams creating obstruction for normal upright sprinkler. Beam depths are large enough that we cannot install the sprinklers below the beams. Beams are arranged in a way that they are creating rectangular pockets like rooms with 7.4 m x 4.03 m dimensions. Only difference is in room… (Show more)

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milt.werner (to abdulrafay80) 11 hours ago (Show more Show less)

When you say ' correct me if I'm wrong' indicates that you are not entirely sure that what you are about to say is true. I am not sure about the abstract thought (difficult to understand) of a beam pocket was like a separate room and a fire knowing where a sprinkler head has been located. My point of view was the ceiling construction above the…

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kkunze333 in Fire Protection Systems13 hours ago (Show more)

Can Class 2 standpipes and fire hose be utilized for clean-up and other industrial functions or must they be maintained exclusively for firefighting?

I am working in a setting where industry wants to utilize clean-up hose for firefighting. If it meets the size and flow requirements of a Class 2 standpipe and hose system, I advise that fire hose must be inspected, tested, and maintained but I have not found any restrictions from utilizing the hose for other purposes.

thanomsak.c in Fire Protection Systems24 hours ago (Show more)

The design sprinkler for warehouse.

This is information for warehouse and goods storage as follow. - The warehouse have sizing as 20 m x 160 m. - Ceiling storage high as 18 m. - Storage high as not most than 6.5 m. ( Palletized and Solid-Piled Storage ) - The goods is class group plastic A. - Ceiling storage slope as 3 degree. How should I design the sprinkler… (Show more)

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nocivus (to thanomsak.c) 15 hours ago (Show more Show less)

A false ceiling is required when ceiling height exceed the standards and sprinkler's listing maximum height. Alternatively, arrange storage within racks and install intermediate sprinklers.

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abdulrafay80 in Fire Protection Systems2 days ago (Show more)

Fire Pump Sequence Of Operations for Multiple Pumps

In one of my project we have a requirement of 2500 gpm fire water flow. Instead of providing one 2500 gpm electrical pump and one 2500 gpm diesel pump we have provided 2 x 1250 gpm electrical pump and 2 x 1250 gpm diesel pumps. Now the problem is what will be the sequence of operation pumps. For example, normally if electrical pump does not… (Show more)

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rodriguez@colasrail.com (to abdulrafay80) 23 hours ago (Show more Show less)

Normally the set shall be base in pressure and time for example, if the diesel pumps are the backup, the first pump shall start 10 psi below of pressure system, and the second pump 05 second later. The point is always keep the electrical pump running, please remember set the electrical pumps, the first at pressure system, the second one 5…

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gkiouzellis in Fire Protection Systems2 days ago (Show more)

8.6.5.2.1.3 figure clarification

the section states sprinkler shall be positioned minimum 3x max column dimension and at the same time max of 24". if the column dimension is 2-ft, A dimension is over 24". can anyone please clarify this statement

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cdafd (to gkiouzellis) 1 day ago (Show more Show less)

Max distance away two feet, after that no problem

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nfpa.notifications@msratingbureau.com in Fire Protection Systems1 day ago (Show more)

Encapsulated commodities

Standard 13 2019 edition paragraph 3.3.64 gives the definition for encapsulation for combustible commodities. The question is does this definition apply to all commodity classes or is there another definition? Section 21.2.3 gives design for commodity classes 1-4.

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cdafd (to nfpa.notifications@msratingbureau.com) 1 day ago (Show more Show less)

I am going with it applies to all commodities Look at some of the tables, and it states all

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minhyeong1.kim in Fire Protection Systems2 days ago (Show more)

Are large fire pumps, 4500 gpm or 5000 gpm split case horizontal, really provided?

Hi. I wonder large fire pumps, 4500 gpm or 5000 gpm split case horizontal, are commonly provided in real world projects. I am not sure there are demands for such high capacity pumps in the industry. In my experience, never used single large pump, instead used multiple small or medium size pumps, e.g. 2 x 2500 gpm. I am working on a project… (Show more)

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nocivus (to minhyeong1.kim) 2 days ago (Show more Show less)

NFPA 20 does not specify how many fire pumps a system must have. As log as the system's water demand can be met, it is acceptable by NFPA 20. If one or two pumps should be provided will depend on the owner's budget, manufacturer availability and AHJ requirements. Personally, I would prefer 1 x 100% unless the project's specifications or an AHJ…

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catherine.tp.tillberg in Fire Protection Systems2 days ago (Show more)

Extending Unrequired Sprinkler System into Addition

We are adding some work bays onto a repair garage that is classified as Special Purposes Industrial. The existing garage has a sprinkler system installed during a rehab about 5 years ago, but I cannot find a reason why it was required to be installed throughout - there are some storage rooms for batteries and flammables, but those have a 2-hr… (Show more)

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cdafd (to catherine.tp.tillberg) 2 days ago (Show more Show less)

Talk to your insurance company also, to see if it helps or hurts your insurance rate,,,by installing or not

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rudygomez in Fire Protection Systems1 week ago (Show more)

When will someone read the question I asked 2 weeks ago?

Is there a timeline when someone responds to these questions?

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faizal_sharin (to rudygomez) 2 days ago (Show more Show less)

chiefns830 - Sir, this is the question from OP. Rudy, I am not familiar with local authority requirements in California. I am not from the US - but from where I come, our local fire authority requires ALL emergency telecommunication systems to be provided with an automatic power backup even if there were 24/7 personnel stationed on site. This…

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rcooksley in Fire Protection Systems2 days ago (Show more)

Reduced Pressure in Bucket Elevator

I have been asked for the Pred (reduced pressure) value for a bucket elevator, whether it is single leg or twin leg. How would i go about acquiring this value?

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