What Merle said, but please take note that the first benchmark on his list 
closed earlier this year (Public Inputs).  I’m on the TC and we staggered to 
the First Draft finish line in April, so the draft is posted and we’re in the 
Public Comments stage.

I would explain to the FM that 1), the standard is nowhere near “ready” and, 2) 
that it covers a lot more than just sprinkler design.  Any effort to enforce 
the draft will open a Pandora’s Box of secondary and tertiary effects because 
there are safety concerns and prescriptive standards of care for other systems, 
such as exhausting CO2 and dust.  Some facilities are just grows, and some have 
curing and processing attached and associated with the growing areas.   Some 
grows are big open warehouses and some are prefabricated rooms that are like a 
walk-in cooler.  You may fixed racking or tables or rolling  You have flammable 
liquids concerns and depending on the extraction method, potential H 
occupancies that would require fire-rated separation.   Down the road, this is 
going to be a detailed and lucid standard, and the draft is pretty good but not 
publication-ready.

Also, if anyone wants to buy tickets for VIP downwind seating at our full scale 
fire tests, please message me off-forum.


Steve L.

From: Fpdcdesign <[email protected]>
Sent: Friday, October 03, 2025 7:49 AM
To: Discussion list on issues relating to automatic fire sprinklers 
<[email protected]>
Subject: [Sprinklerforum] Re: NFPA 420

Thanks. I thought that was the case but I wanted to be sure before I short my 
mouth off (again).

Todd G Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860-535-2080<tel:860-535-2080> (ofc)
860-554-7054<tel:860-554-7054>  (fax)
860-608-4559<tel:860-608-4559> (cell)



On Oct 3, 2025 at 10:30 AM, <Peter Googins<mailto:[email protected]>> 
wrote:
No, the status is still "proposed"

Standard on Fire Protection of Cannabis Growing and Processing Facilities
Status: Proposed
Notify Me About Document Updates

To review the NFPA 420 preliminary draft and make suggested changes, select the 
"Submit Public Input" button under Next Edition below.

On Fri, Oct 3, 2025 at 10:26 AM Fpdcdesign 
<[email protected]<mailto:[email protected]>> wrote:
Has this standard (cannabis production) been released yet? I have been asked by 
a fire marshal to meet these requirements but I don’t have a copy. Not on the 
NFC website.

Todd G Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860-535-2080<tel:860-535-2080> (ofc)
860-554-7054<tel:860-554-7054>  (fax)
860-608-4559<tel:860-608-4559> (cell)

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NFPA Fire & Life Safety Plan Reviewer
Permitting & Inspections
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