Bulb-type automatic sprinklers and fusible links other than metal alloys shall be replaced

Bulb-type automatic sprinklers and fusible links other than metal alloys shall be replaced

• A. Quarterly
• B. Annually
• C. Monthly
• D. Semiannually

Answer: (B)

Bulb-type sprinklers and non-metallic fusible links are temperature-sensitive devices whose reliability can decline with age and exposure. The glass bulbs can develop microcracks or other failures, and non-metallic fusible links can degrade, both of which could prevent a sprinkler from activating when needed. Replacing these components on a yearly schedule minimizes the risk of a failed activation due to aging, providing a practical balance between safety and maintenance effort. More frequent intervals aren’t typically necessary, while longer intervals could leave aging components in service. That’s why annual replacement is the prescribed approach.

Bulb-type sprinklers and non-metallic fusible links are temperature-sensitive devices whose reliability can decline with age and exposure. The glass bulbs can develop microcracks or other failures, and non-metallic fusible links can degrade, both of which could prevent a sprinkler from activating when needed. Replacing these components on a yearly schedule minimizes the risk of a failed activation due to aging, providing a practical balance between safety and maintenance effort. More frequent intervals aren’t typically necessary, while longer intervals could leave aging components in service. That’s why annual replacement is the prescribed approach.