Good Afternoon.

I don’t know if you are doing wider fire protection or just putting wet stuff 
on the red stuff.

Are you doing the alarm as well? We always asked for, and rec’d an ‘Of course’, 
to providing power to the alarm system off the EPPS. It’s a tiny draw. I would 
expect especially the sub-FACU that powers the solenoid for a double interlock 
system. I’d also ask about compressed air supply for the sprinklers either way, 
again directly with owner/operator. Have they considered thaw but not a false 
trip?

As far as the pump, probably not. But in the letter to file the fire plan 
reviewer is going to note estimated actual number of personnel, brief 
description of exiting system, and distances and what lighting provided when 
grid is down. Once you leave the cooler is the sprinkler density without the 
pump just fine?

The plan reviewer is always going to start with the big picture first.

Best.

Bruce Verhei 






> On 08/27/2021 9:48 AM Richard Mote via Sprinklerforum 
> <[email protected]> wrote:
> 
>  
> After speaking more with the customer. They originally never intended for the 
> fire pump to be on the backup generator. Their main concern is by having a 
> generator on site, could the AHJ then require them to size it for the fire 
> pump. And if the AHJ would have anything in the code to hang their hat on.
> 
> 
> -----Original Message-----
> From: John Denhardt via Sprinklerforum 
> <[email protected]>
> To: [email protected]
> Cc: John Denhardt <[email protected]>
> Sent: Fri, Aug 27, 2021 11:54 am
> Subject: Re: Transfer Switches
> 
> A point to be mentioned:  a fire pump is only supplied by normal power and
> if desired or required, "standby" power.  "Emergency" power is different.
> "Shedding" of power is fully allowed with standby power.
> 
> Thanks,
> John
> 
> John August Denhardt, PE
> *Vice President, Engineering and Technical Services*
> 
> *American Fire Sprinkler Association*
> m: p: 301-343-1457
> 214-349-5965 ext 121
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> 
> On Fri, Aug 27, 2021 at 11:41 AM David Williams via Sprinklerforum <
> [email protected]> wrote:
> 
> > Or you “shed” the refrigeration from the generator sizing during a fire
> > event. That much ice cream will stay cold for the period of time the fire
> > pump needs the power.
> >
> > David Toshio Williams, PE*, FPE
> > (*Registered in MN, WI, MI, IA, IL, IN, ND, VT)
> > (218) 279-2436 direct | (218) 310-2446 cell
> > LHB, Inc. | PERFORMANCE DRIVEN DESIGN
> >
> >
> > From: Sprinklerforum <[email protected]> on
> > behalf of Steve Leyton via Sprinklerforum <
> > [email protected]>
> > Date: Friday, August 27, 2021 at 10:25 AM
> > To: Mark Phillips <[email protected]>, Richard Mote <
> > [email protected]>, [email protected] <
> > [email protected]>
> > Cc: Steve Leyton <[email protected]>, Richard Mote <
> > [email protected]>
> > Subject: RE: Transfer Switches
> > It's ice cream; depending on local health code requirements, a "save"
> > might still be a profound or total loss.
> >
> > After a long time in this racket, I find myself falling back more and more
> > on Chapter 1 of all the standards wherein we find the intent statement,
> > which is to provide a "reasonable" level of protection against fire.    If
> > they want/need a generator to keep ice cream from melting in this fully
> > sprinklered building, then plug one in.  But it's also fair to undertake a
> > cost/benefit analysis if backing up the pump means doubling the cost of the
> > gen set and if the owner doesn't see the value, so be it.  Keeping in mind
> > that at no point in this discussion has there been any allusion to the
> > power supply not meeting the reliability requirements of NFPA 20.
> >
> > SL
> >
> >
> > From: Mark Phillips [mailto:[email protected]]
> > Sent: Friday, August 27, 2021 3:48 AM
> > To: Richard Mote <[email protected]>; [email protected]
> > Cc: Richard Mote <[email protected]>; Steve Leyton <
> > [email protected]>
> > Subject: Re: Transfer Switches
> >
> > Not a code requirement but less expensive that complete product loss.
> >
> >
> >
> > Sent from my mobile device
> > Please excuse spelling, grammar, and auto correction.
> >
> > Mark Phillips
> > Branch Manager
> > Fire Sprinkler Design, Install, Inspections
> > Service, Backflows, Fire Alarm Inspections
> >
> > 832-101 Purser Drive
> > Raleigh NC 27603
> > Phone: 919-779-4010
> > Fax : 919-779-4014
> > Cell : 919-268-7587
> > Email : [email protected]<mailto:[email protected]>
> > Web : www.pyebarkerfire.com<http://www.pyebarkerfire.com<
> > http://www.pyebarkerfire.com%3chttp:/www.pyebarkerfire.com>>
> >
> > ________________________________
> > From: Sprinklerforum <[email protected]
> > <mailto:[email protected]>> on behalf of
> > Richard Mote via Sprinklerforum <[email protected]
> > <mailto:[email protected]>>
> > Sent: Thursday, August 26, 2021 8:24:16 PM
> > To: [email protected]<mailto:
> > [email protected]> <
> > [email protected]<mailto:
> > [email protected]>>
> > Cc: Richard Mote <[email protected]<mailto:[email protected]>>;
> > [email protected]<mailto:[email protected]> <
> > [email protected]<mailto:[email protected]>>
> > Subject: Re: Transfer Switches
> >
> > [EXTERNAL]
> >
> > This is a building within a building a 60,000 sq.ft. steel building with a
> > 27,700 sq.ft. freezer. The emergence generator is to protect several tons
> > of ice cream from having a melt down. If they size the generator to handle
> > the fire 150 hp fire pump load it will double the price he says.
> >
> >
> > -----Original Message-----
> > From: Steve Leyton via Sprinklerforum <
> > [email protected]<mailto:
> > [email protected]>>
> > To: Richard Mote <[email protected]<mailto:[email protected]>>;
> > [email protected]<mailto:
> > [email protected]> <
> > [email protected]<mailto:
> > [email protected]>>
> > Cc: Steve Leyton <[email protected]<mailto:
> > [email protected]>>
> > Sent: Thu, Aug 26, 2021 8:15 pm
> > Subject: RE: Transfer Switches
> >
> > To paraphrase, you're asking if it's required to connect a gen set that is
> > installed in a building that isn't a high-rise building or some other
> > essential facility where there is a code requirement for emergency power,
> > correct?  In other words, a voluntary generator with regard to the code set.
> >
> > Assuming that's the case and there isn't a formal interpretation from the
> > AHJ regarding the reliability of the power supply, I would say no.  The
> > code will require an emergency power supply or not.  If one is required,
> > then the FLS systems have to be on that, but if the secondary isn't
> > required by code then it's up to the owner (and let's face it, that's
> > certainly a good idea if the generator is sized for the fire pump).    So
> > there MAY be something in the code that requires this, but only if it's a
> > mandatory generator.
> >
> >
> > Steve Leyton
> >
> > -----Original Message-----
> > From: Sprinklerforum [mailto:
> > [email protected]] On Behalf Of Richard Mote
> > via Sprinklerforum
> > Sent: Thursday, August 26, 2021 5:04 PM
> > To: [email protected]<mailto:
> > [email protected]>
> > Cc: Richard Mote <[email protected]<mailto:[email protected]>>
> > Subject: Transfer Switches
> >
> > Got a email from a customer with the following question. I'm on the road
> > with no access to my books.If an emergency generator is installed on a
> > building, is there anything in the codes that would require it to be
> > connected to the fire pump.
> > RichardL. Mote CET
> >
> > Rimrock Design Services,LLC
> >
> > PO Box 36
> > Middleburg, PA 17842
> >
> > Mobile 570-541-2685
> >
> > EMAIL [email protected]<mailto:
> > [email protected]>
> >
> >
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