In most cases the booth is smaller than the design area needs to be so
every booth I've ever designed has been every sprinkler in the booth and
throughout the plenum and exhaust, so you would be calculating the booth
according to NFPA 33 not NFPA 13, the phantom flow is for NFPA 13
calculations

NFPA 33
9.6.2.1 The sprinkler design area shall not be required to exceed the area
of the booth or room in which spraying or resin application is conducted.
9.6.5 The sprinkler system shall be controlled by a separate, listed
indicating valve(s), operable from floor level.
9.6.6
(6) The system demand shall include the discharge from the hydraulically
most remote adjacent sprinklers in a common 30.5 m (100 linear ft) area of
duct (horizontal and/or vertical).
(4) Sprinklers shall provide a minimum flow of 114 L/min (30 gpm) per
sprinkler at a minimum of 1 bar (15 psi) pressure.


Thanks

Brett Peters
General Manager Installation & Design
Proudline Fire Protection Services Ltd.
[email protected]
780 490 7602 office ext 202
780 490 7605 fax
780 777 0568 cell
780 718 2676 24h
Visit us at www.proudline.ca

Proudline now offers ULc listed monitoring services, please contact
[email protected] for more information






On Fri, Mar 31, 2023 at 12:41 PM Anthony Johnson <
[email protected]> wrote:

> As an additional note NFPA 2019: 26.4.1.3 says that the sprinkler design
> area shall not be required to exceed the area of the booth so my question
> basically becomes is it still neccessary to add a phantom flow for the
> difference of flow?
>
> Anthony
>
>
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