Section 62.25-15 - Safety control systems(a) Minimum safety and trip controls required for specific types of automated vital systems are listed in table 1 to § 62.35-50 . Note 1 to paragraph (a):
Safety control systems include automatic and manual safety trip controls and automatic safety limit controls.
(b) Safety trip controls must not operate as a result of failure of the normal electrical power source unless it is determined to be the failsafe state.(c) Automatic operation of a safety control must be alarmed in the machinery spaces and at the cognizant remote-control location.(d) Local manual safety trip controls must be provided for all main boilers, turbines, and internal combustion engines.(e) Automatic safety trip control systems must-(1) Be provided where there is an immediate danger that a failure will result in serious damage, complete breakdown, fire, or explosion;(2) Require manual reset prior to renewed operation of the equipment; and(3) Not be provided if safety limit controls provide a safe alternative and trip would result in loss of propulsion.