In r/MarineEngineering, an ME-C starting air system question draws detailed clarification on pneumatic and electrical interlocks that prevent starting under unsafe conditions.
I have a huge difficulty understanding my ship starting air system. My vessel engine is ME-C type.
There is only two main air reservoirs ( 30bar) and no control air reservoir.
handwheel both physically blocks the starting air shutoff valve and operates a limit switch to electrically block starting commands when not fully open
I have a huge difficulty understanding my ship starting air system. My vessel engine is ME-C type. The starting air system is pneumatic and electronic.
Correct, handwheel both physically blocks the starting air shutoff valve and operates a limit switch to electrically block starting commands when not fully open, to prevent engine start when we want engine immobilised.
Same with turning gear which has both a limit switch 28 for not fully disengaged and operates a pneumatic interlock 20 to cut off control air supply to the start slowturn control solenoids 30 32 36, preventing engine rotation under air while turning gear is engaged.
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