When used for sprinkler system design, the water flow test shall be conducted no more than how many months prior to work plan submittal?

NFPA 13, the standard for the installation of sprinkler systems, explicitly requires that the data from a water flow test be current. The standard mandates that this data shall be no more than 12 months old at the time of plan submittal. This requirement ensures that the sprinkler system design is based on an accurate representation of the available water supply, which can fluctuate due to changes in the municipal system, seasonal demands, or deterioration of piping. Using data older than 12 months poses a significant risk of designing a system that may not perform as required during a fire event.

A. 3: This is an unnecessarily short time frame and is not the requirement specified in the standard.

B. 6: While more recent data is generally preferable, the standard permits a longer interval of up to 12 months.

D. 18: This time frame exceeds the maximum limit set by NFPA 13, making the data invalid for design purposes.

1. NFPA 13, Standard for the Installation of Sprinkler Systems, 2022 Edition, Section 5.2.2.3, "Flow test data shall be no more than 12 months old."

2. NFPA 13, Standard for the Installation of Sprinkler Systems, 2019 Edition, Section 5.2.2.3, "Flow test data shall be no more than 12 months old."

3. SFPE, Handbook of Fire Protection Engineering, 5th Edition, Chapter 20, "Water-Based Fire Protection System Design," Section 20.4.1 "Water Supply Analysis," which states that water supply evaluation must be performed in accordance with NFPA 13, including the requirement for the currency of flow test data.