Q

Selecting a sprinkler system: Dependent on local building code regulations?

Fire protection expert Lance Harry answers a question about building codes and sprinkler systems.

Is the selection of a sprinkler system dependent on the building code regulations in your local area?

For example, a wet-based sprinkler system may be mandatory, but can't it be complemented with other systems that are activated first when there is a fire?

The short answer here is, yes. In the vast majority of cases, local code (which is frequently driven from NFPA or IBC or other standardized codes) will dictate the need for water based systems, and in most cases, do require them, throughout the building.

In some cases, although rare, the AHJ (Authority Having Jurisdiction) will allow a waterless, clean agent suppression system in lieu of a water based system. NFPA 101, the Life Safety Code, section 9.7.3 contains an example of verbiage that justifies this position.

90 percent of the time or more, waterless, clean agent systems are selected for use by the owner of the building and/or the owner of the assets to be protected. Systems like FM-200 are employed to protect the operational value and the contents of the facility, not necessarily for structural protection of the building... thats what the sprinklers are there for!

Also, your conclusion regarding sequence of events is correct. In almost every case where both a sprinkler system and a waterless system is employed, the clean agent will discharge prior to a sprinkler discharge. Fundamentally, this is because the waterless system works from smoke detection (fast acting) while the sprinkler works from heat detection (slightly slower acting).

This was first published in June 2006

Dig deeper on Data center physical security and fire suppression

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

SearchWindowsServer

SearchEnterpriseLinux

SearchServerVirtualization

SearchCloudComputing

Close