Each support system or foundation of each component [any part, or system of parts functioning as a unit, including, but not limited to, piping, processing equipment, containers, control devices, impounding systems, lighting, security devices, fire control equipment, and communication equipment, whose integrity or reliability is necessary to maintain safety in controlling, processing, or containing a hazardous fluid]must [used in the mandatory and imperative sense] be inspected for
any detrimental change that could impair support.