Fire Protection Systems

saleh in Fire Protection Systems1 year ago (Show more)

A 9 storey building with a one basement car parking. The fire pump room is located in the basement car parking and has got a jockey pump, an electrical pump and a diesel pump As per the NFPA 20, section 4.13.1.3 and 4.13.1.4 – fire pump room needs to be sprinklered. I understand that the fire pump room has to be fire protected with 2 hrs/1hrs… (Show more)

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milt.werner (to saleh) 1 day ago (Show more Show less)

I would like to add some administration requirements of the standard. They are important to review before applying the section of the standards. Looks to me like your posting is an existing installation. To me, the requirements of 2016 NFPA 20 does not apply to existing installations unless the AHJ has determined the existing construction is an…

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samverabennett in Fire Protection Systems2 days ago (Show more)

When You have inside and outside hose Allowance Combined or added?

If I have a ESFR system that ask for 250gpm for hose allowance and I add 100 at base of riser for inside hose. I have been using 150gpm outside and 100gpm inside(connect a base of riser or to another system) for a total of 250gpm.

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nocivus (to samverabennett) 1 day ago (Show more Show less)

It doesn't matter much from where the hose allowance is coming as long they both add up to the required demand. In your case you can even have 0 GPM inside and 250 GPM outside.

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jaimelichi in Fire Protection Systems3 days ago (Show more)

Fire Protection Loop Sectional Failure

Good day, Could anyone please provide son guidance on why this underground section collapsed? This is one of the connections from the 8” loop to a riser system which services a sprinkler branch. The pumps consist of two 2,000 gpm @ 130 psi. Previous hydro tests where successfully completed to the entire loop, there are 11 sprinkler systems… (Show more)

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jaimelichi (to kburns) 2 days ago (Show more Show less)

Kennard, the pumps ran not four, 13 uninterrupted hours! the supervisory panel installed at the 24/7 attended guard house, got the (audible and visible) signals however, the 80+dB noise was too much for them, so they decided to take no further action but to ignore the overnight situation. Yes, the pumps got major damages, both SPP diesel…

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stevehanson in Fire Protection Systems2 days ago (Show more)

Can Fire Alarm Device Back Boxes Be Painted

I know painted the devices (initiating and notification) is not allowed. Are the back-boxes they are mounted to allowed to be painted? I can't find anything other than the typical "Devices must be installed per manufacturer's instructions" kind of thing. Normally the instructions will be must be mounted to a listed/approved devices. Thank… (Show more)

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stevehanson (to stevehanson) 2 days ago (Show more Show less)

Thank you Milt. This was the path I was traveling as well. There are always less common things I miss going down the common sense path though!

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kavir in Fire Protection Systems1 week ago (Show more)

protection against sea blast corrosion of fire wire

Good day Forum Do you have any recommendations for fire rated wires to be used in an area experiencing heavy sea blast? the bare copper connections are turning black and corroding. thank you.

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kavir (to chriscarlson) 2 days ago (Show more Show less)

Thank you Regards, Kavir

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vwoodworth in Fire Protection Systems2 days ago (Show more)

While podium construction clearly allows two separate sprinkler systems (NFPA-13 and -13R) below and above a 3-hour horizontal slab, can both types of systems be combined in a single building without a podium?

This is regarding a new clubhouse/apartment building in New York state. There will be a 2-hour use group separation between the A-3 Clubhouse and the R-2 apartment building.

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cdafd (to vwoodworth) 2 days ago (Show more Show less)

No Read the Scope of NFPA 13R OHHH I am not an engineer, so you can discount my reply if you want, and I cannot do math. Click on this profile cdafd . I have no confidence. Seems foolish or stupid.

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seb.nowak0 in Fire Protection Systems3 days ago (Show more)

Sprinkler Calculation - Safety Factor

Good Morning All, I would like to ask, when you calculate flow (base calculation) do you include coefficient or excess? For example: CMDA 0.30gpm/ft2 (12.2 mm/min) x 2500 ft2 (232 m2) = approximately 750 gpm (2831 L/min) x 1.4 = 1050 gpm (3964 L/min) 1.4 is for disturbance flow excess/coefficient is this correct to add? ESFR… (Show more)

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seb.nowak0 (to nocivus) 2 days ago (Show more Show less)

Thank you for clarification. I was thinking exactly about the same, but many persons who made first assumption regarding design used different hydraulic balance factor which is why I wanted confirm do I think correctly. Thank you one more time.

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hantaaal in Fire Protection Systems4 days ago (Show more)

deluge system

hi engineer i have deluge system for extinguishing and i want to know is there specific area for deluge valve. i mean the maximum area can coverage by deluge valve. thanks

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cdafd (to hantaaal) 3 days ago (Show more Show less)

Might depend on what you are trying to protect, and how you are protecting it NFPA 13 2016 edition 23.5 OHHH I am not an engineer, so you can discount my reply if you want, and I cannot do math. Click on this profile cdafd . I have no confidence. Seems foolish or stupid.

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nav822nav in Fire Protection Systems4 days ago (Show more)

Is it correct to install Jockey pump in between main fire pumps

Hi, In fire water pump house the general installation of big fire water pumps is one side and the jockey pump is on another corner even if we take the suction from the same header and there is a lot of space left in between the big fire pumps due to the piping, can we install the jockey pumps in between the two big fire pumps if there is space… (Show more)

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eng_diaa1985 (to nav822nav) 4 days ago (Show more Show less)

Sure, what is the problem from that

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firesafetypunjab in Fire Protection Systems5 days ago (Show more)

NFPA 13,Highrise Apartment Building

Hello to every one,i have a question that if a Highrise Apartment building has sprinkler system just in area out side apartments.Is it enough as per NFPA 13?or all apartments of highrise building required sprinkler in inside areas of apartments.Thanks

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milt.werner (to firesafetypunjab) 4 days ago (Show more Show less)

You wrote: Is it requirement of any NFPA standard that high rise apartment building should have sprinkler with in apartments? NFPA standards no. NFPA codes yes. Respecfully, Milt Werner

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