Sprinkler System Type for Cast & Forging Plant?

9/22/2021

I have a project for a Cast and Forging plant, which requires a "double interlock sprinkler system per NFPA 13". That's the first I've heard of a "double interlock sprinkler system".

My question is do I have to use a deluge valve or would this be an alarm check valve?

Would nozzles be open or closed?

Many questions, thanks.

Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe

9 Comments

Alex

9/22/2021 06:52:23 am

Hi Anonymous,

You would use a deluge valve. Take a look at Vikings ‘Double Interlock Preaction System with Electric / Pneumatic Release’.

By nozzles, are you referring to the sprinklers? If so, sprinklers need to be ‘closed’. A double preaction requires both an open sprinkler and operation of the detection system before the valve opens allowing water to flow.

Thanks,
Alex

Jon link

9/22/2021 11:18:25 am

Sorry for the confusion. Nozzles is sprinkler. Usually here in Saudi we call it nozzles. If open type, it's spray nozzle and closed it's sprinkler nozzle

Jesse

9/22/2021 08:25:12 am

Not sure what you're referring to as "nozzles". I'll presume your mean sprinkles. Sprinklers are closed as part of the double interlock requires a sprinkler fusing.

The concern in a casting plant is the introduction of water over the smelting operation or over a crucible being transported will be catastrophic.

You're valve should have an electric actuator interlocked to the detection component(s)

Jesse

9/22/2021 08:59:17 am

To clarify, valve should be electric / electric or electric / pneumatic

Kell

9/22/2021 08:38:37 am

Double Interlock would be something like the Tyco DV-5 valve with the required trim, be it Electric/Electric or Electric/Pneumatic which ever detection type is required (Preaction System). The sprinklers would be regular wet system sprinklers, NOT open Deluge type or Nozzles.

Glenn Berger

9/22/2021 09:12:46 am

The above responses all assume that the requirement is for a "Double-Interlocked Preaction Sprinkler System. You can have a "Double-Interlocked Deluge System. Submit and RFI to get this clarified. The RFI should also include the means of actuating the system.

As mentioned earlier - The application of water to an "open" casting operation may introduce additional dangerous conditions.

Alex

9/22/2021 09:54:01 am

Good point, Glenn. My mind didn’t even cross that road.

Jon link

9/22/2021 11:32:45 am

Hi Glenn, send the RFI and client mentioned the it should be a Double interlock sprinkler system, electric/pneumatic per NFPA 13

Jon link

9/22/2021 11:28:14 am

Thanks to all. Got the clarification and it will be electric/pneumatic. Closed type sprinkler nozzle with heat detector, It will protect hydraulic room, control room and electrical room

Leave a Reply.

Home
Our Cause

The Blog
The Forum

PE Exam Prep
The Toolkit
MeyerFire University

Pricing
Login
Support
Contact Us

MeyerFire.com is a startup community built to help fire protection professionals shine.
Our goal is to improve fire protection practices worldwide. We promote the industry by creating helpful tools and resources, and by bringing together industry professionals to share their expertise.

MeyerFire, LLC is a NICET Recognized Training Provider and International Code Council Preferred Education Provider.
All text, images, and media Copyright © 2016-2024 MeyerFire, LLC

We respect your privacy and personal data. See our Privacy Policy and Terms of Service. The views, opinions, and information found on this site represent solely the author and do not represent the opinions of any other party, nor does the presented material assume responsibility for its use. Fire protection and life safety systems constitute a critical component for public health and safety and you should consult with a licensed professional for proper design and code adherence.

Discussions are solely for the purpose of peer review and the exchange of ideas. All comments are reviewed. Comments which do not contribute, are not relevant, are spam, or are disrespectful in nature may be removed. Information presented and opinions expressed should not be relied upon as a replacement for consulting services. Some (not all) outbound links on this website, such as Amazon links, are affiliate-based where we receive a small commission for orders placed elsewhere.

Sprinkler System Type for Cast & Forging Plant?

Leave a Reply.

ALL-ACCESS

SUBSCRIBE

COMMUNITY

YOUR POST

PE EXAM

FILTERS

ARCHIVES

PE PREP SERIES