Current State of Manhole Water Control
Many utilities have invested in locking, hinged, or tethered cover designs to prevent manhole covers from flying in the air during a manhole explosion. However, none of these options prevent the buildup of combustible or toxic gases inside the vault. As a result, none of these cover designs prevent explosions. In order to find a solution that addresses the root cause, utilities need a vented manhole cover design that will prevent significant ingress of storm water, salt, and debris while allowing cycled air flow.