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Tag Archives: NFPA 13

Hydraulic Calculations

Back to Basics Hydraulic calculations completed by hand are a thing of the past. Computer programs can provide you with pages of information at the click of a mouse. However, given the demand for new sprinkler designers, there is a need to return to the basics. Designers, particularly newer designers, …

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Longitudinal Sway Bracing of CPVC

Using an NFPA 13 Analogy There are very few listed sway brace fittings for CPVC pipe. Listing criteria specified by the CPVC resin manufacturers and recognized by Underwriters Laboratories (UL) define the mechanics required of listed CPVC sway brace fittings and their design. Accordingly, UL listing requires strictly defined features …

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Follow the Bouncing Needle

Margin of Safety vs. Safety Factors There I was, working hard spotting and connecting dots with a steady hand and focused eye, when my boss came in and announced, “We are doing a water flow test this weekend and I want you to attend. I want you to learn how …

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Questions About NFPA 30?

Questions About NFPA

Informal Interpretations Help Douse Disagreements The informal interpretations featured in this issue of Sprinkler Age address NFPA 30, Flammable and Combustible Liquids Code. AFSA’s informal interpretations are provided to AFSA members by Senior Vice President of Engineering & Technical Services Roland Huggins, P.E. and Senior Manager of Fire Protection Engineering …

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Protecting Paint Booths

Protecting Paint Booths

Running the Criteria Gauntlet The first time I was presented with someone in need of an estimate to protect a paint booth was many years ago. I looked to others in the office for guidance, but I seemed to mostly get answers that involved “I think,” “I’m pretty sure,” or …

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ESFR Sprinklers and Obstructions

ESFR Sprinklers and Obstructions

Research Continues on Larger Sizes The invent of early suppression fast response (ESFR) sprinkler in the 1980s revolutionized storage fire protection. No longer were rack sprinklers needed to protect high heat release rate commodities stored within tall racks. In addition, the ESFR sprinkler provides adequate protection for a range of …

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The Cycle of Research and Development

The Cycle of Research

Getting Products to Market Research and development (R&D) in the fire sprinkler world is a fascinating, frustrating, regulated, fun, rewarding, and slow process. In the fire sprinkler industry we often confuse R&D with good, old-fashioned product engineering. I have had the pleasure to be involved with the R&D process for …

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ESFR Sprinklers and Obstructions

ESFR Sprinklers

The Existing Criteria is Likely Too Conservative In a continuing and extensive effort to develop reliable and effective tools and guidelines for the unique installation of early suppression fast response (ESFR) sprinklers relative to obstructions, the National Fire Protection Association (NFPA) through its Research Foundation has completed three phases of …

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