In fire-exposed areas containing rubber-gasketed fittings, protection must be provided by which means?

• A. Automatic foam-water systems or other approved means
• B. Physical barriers only
• C. Increased inspection frequency
• D. None required

Answer: (A)

Rubber-gasketed fittings are susceptible to deterioration and leakage when they are in areas that can be exposed to fire. To preserve the reliability of the system in those conditions, protection must come from an automatic foam-water system or another approved means. The foam-water system provides active cooling and fire suppression that helps keep gasket temperatures down and maintains integrity, while the “other approved means” clause allows recognized protective methods (such as heat-resistant enclosures or shielding) that meet the standard. Relying on physical barriers alone often isn’t sufficient in a real fire, and simply increasing inspection frequency won’t prevent gasket failure during an actual fire. None of those options adequately address the fire exposure risk on their own.