NFPA 15 ยง5.3.6.1 steel pipe used in manual and open systems shall be galvanized on its internal and external surfaces IAW Table 5.3.1.
What is an open system? Deluge? What is a manual system? Fusible link or glass-bulb? These systems are not defined in NFPA 15 or 13. Is there an automatic system? Or other types of systems? The verbiage is confusing, any help is appreciated. Best, Timothy M. Easter, P.E. Fire Protection Engineer BAE Systems, Inc. T: +1 423 578 1713 | E: [email protected]
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