[Sprinklerforum] Re: Water tank return line

Ken Wagoner Wed, 25 Sep 2024 06:56:34 -0700

Having worked most of my career on the 'left' coast, I can confirm Ryan's remarks,

In one jurisdiction there was a requirement that discharge from a fire pump had to be captured, treated, and returned to the reservoir after the testing confirmed that the water was 'clean.'

As you may imagine the already high cost of a fire pump was increased by this requirement.

sincerely,

Ken Wagoner, SET
Parsley Consulting
500 West Mechanic Street
Harrisonville, Missouri 64701-2235
Phone: (760) 745-6181
Visit the website

On 9/25/2024 8:43 AM, Hinson, Ryan wrote:

Not per NFPA 20. It is provided as an option. Certain jurisdictions such as on the Left coast may have requirements to minimize water wastage. I’ll let them chime further.

Ryan L. Hinson, PE*, SET** \ Burns & McDonnell

Associate Fire Protection Engineer \ Upper Midwest Region

O 612-900-3755 \ M 763-688-4045 \ F 952-229-2923

[email protected] \ burnsmcd.com

8201 Norman Center Drive, Suite 500 \ Bloomington, MN 55437

*Registered in: AK, LA, MD, MN, PA, TX, & UT

**NICET IV - Water-Based Systems Layout

From: Tim Easter <[email protected]>
Sent: Wednesday, September 25, 2024 8:39 AM
To: Discussion list on issues relating to automatic fire sprinklers <[email protected]>
Subject: [Sprinklerforum] Re: Water tank return line

I understand it's allowed, but is it required? Thank you.

On Wed, Sep 25, 2024, 9:16 AM Hinson, Ryan <[email protected]> wrote:

Return to source or return to reservoir is specifically allowed both for test header- and pressure relief valve discharge per NFPA 20 (2022) Sections 4.20.6, 4.20.7, and 4.20.8 with appropriate provisions.

Ryan L. Hinson, PE*, SET** \ Burns & McDonnell

Associate Fire Protection Engineer \ Upper Midwest Region

O 612-900-3755 \ M 763-688-4045 \ F 952-229-2923

[email protected] \ burnsmcd.com

8201 Norman Center Drive, Suite 500 \ Bloomington, MN 55437

*Registered in: AK, LA, MD, MN, PA, TX, & UT

**NICET IV - Water-Based Systems Layout

From: Tim Easter <[email protected]>
Sent: Wednesday, September 25, 2024 5:42 AM
To: [email protected]
Subject: [Sprinklerforum] Water tank return line

Is there a code requirement to return discharge of the fire pumps to the water tank?

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[Sprinklerforum] Re: Water tank return line

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