تحديث هام (7#) فى NFPA 13 إصدار 2025 خاص بال System Protection Area Limitations

تحديث هام (7#) فى NFPA 13 إصدار 2025 خاص بال System Protection Area Limitations

In the 2025 edition of NFPA 13, the area limitations for light hazard wet pipe systems that are electrically supervised has been increase from 52,000 square feet to 78,000 square feet.

System Protection Area Limitations

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The maximum floor area on any one floor to be protected by sprinklers supplied by any one sprinkler system riser or combined system riser shall be as follows:

(1) Light hazard — 52,000 ft2 (4830 m2)

(2) Light hazard protected with a wet pipe system and the system water flow and supervisory alarms are transmitted to a supervising station in accordance with NFPA 72— 78,000 ft2 (7250 m2)

(3) Ordinary hazard — 52,000 ft2 (4830 m2)

(4) Extra hazard — Hydraulically calculated — 40,000 ft2 (3720 m2)

(5) High-piled storage and storage covered by other NFPA standards — 40,000 ft2 (3720 m2)

(6) In-rack storage — 40,000 ft2 (3720 m2)

Reference: NFPA 13, 2025 edition.