NFPA CWBSP - Certified Water-Based Systems Professionals

Water flow tests for sprinkler system design should be conducted no more than 12 months prior to work plan submittal to ensure the test data accurately reflects current water supply conditions.

References: NFPA 13 requirements for water supply testing, ensuring that sprinkler system designs are based on up-to-date and accurate water supply information.

For a building where the maximum ceiling temperature will be 80°F (26°C), the lowest permissible temperature classification for the sprinklers would be "Ordinary." This is based on the color-coding system for sprinklers, which provides a means to identify the temperature classifications of their operating elements. Each temperature classification corresponds to a range of maximum ceiling temperatures for which the classification is allowed to be installed. The "Ordinary" classification is suitable for environments where the ceiling temperatures do not exceed the lower thresholds,making it appropriate for a maximum ceiling temperature of 80°F (26°C).

A fire pump must produce at least 65% of its rated pressure at the 150% flow condition. This requirement ensures that the pump can still maintain a significant portion of its pressure even when operating beyond its rated capacity, providing a margin of safety.

References: NFPA 20 sets the standards for the installation of stationary pumps for fire protection, including performance requirements at various flow conditions.

16.11.3.4* Paddle-Type Waterflow Devices

Paddle-type water-flow alarm indicators shall be installed in wet systems only.

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According to NFPA 13, a supply of at least six spare sprinklers shall be maintained on the premises for facilities having under 300 sprinklers. Since the sprinkler system has been installed with 100sprinklers, the minimum number of spare sprinklers to be provided is six.

References: NFPA 13, 2019 edition, section 16.2.7.5(1)1; NFPA 13 Handbook, 2019 edition, section 16.2.7.5(1)2

1: https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=13 2: https://www.nfpa.org/product/nfpa-13-handbook/p0013hb

According to NFPA 13, HVLS fans shall be centered approximately between four adjacent sprinklers to avoid interference with the sprinkler discharge pattern and to provide adequate clearance from the sprinkler deflectors. This requirement applies to both standard and ESFR sprinklers, and the fans shall be interlocked to shut down immediately upon a waterflow alarm.

References: NFPA 13, 2019 edition, section 11.1.71; NFPA 13 Handbook, 2019 edition, section 11.1.72; NFPA 13 Guidelines for Placing HVLS Fans in Sprinkler Protected Buildings; HVLS Fans and Fire Sprinklers

Black or galvanized steel piping is acceptable for the suction and discharge piping of pressuremaintenance (jockey) pumps in fire protection systems. These materials offer the necessary strength and durability for such applications.

References: NFPA 20 and related standards provide guidelines for materials suitable for use in fire pump installations, including piping for suction and discharge lines.

Cardboard boxes containing 45 percent by volume of expanded plastic are classified as Cartoned, Group A, expanded plastic. This classification reflects the high combustibility and potential fire challenge presented by the expanded plastic content.

References: Commodity classification systems in NFPA standards, which categorize materials based on their combustibility and behavior in fire conditions.

The minimum temperature rating for ceiling sprinklers in roll paper storage areas that are 15 ft or less in height is typically 150°F (66°C). This rating is selected to provide a buffer between the ambient temperature conditions and the activation temperature of the sprinklers, preventing accidental activation.

References: NFPA 13 outlines temperature rating requirements for sprinklers based on the occupancy and storage configurations to ensure appropriate activation in the event of a fire.

For floor-stacked idle wood pallets, a design density of 0.225 gpm/ft² over a minimum design area is typically used for calculating water supply requirements. The larger area option (2,500 ft²) provides a more conservative approach to ensuring adequate protection.

References: Fire protection strategies for storage using NFPA 13 guidelines, considering the specific challenges posed by combustible commodities like wood pallets.