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Response to MicaelS (Reply #7)

Sat Jul 13, 2013, 12:02 AM

18. OK, then what I thought was a brilliant fail safe design apparently isn't.

 

My understanding was that air pressure kept the brakes disengaged. No air, then the brakes engage. The other example I have read of was the moderator rods in nuke plants which are held by electro-magnets, and raised and lowered in the core by electric motors to moderate the reactor. In the vent of a power failure, the magnets stop working, and gravity drops the rods all the way in, killing the reactor.

Apparently I misunderstood the system's design, but it seems to me that the system should NOT be described as "fail safe", since it obviously isn't.

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Replies to this discussion thread
Arrow 18 replies Author Time Post
Kelvin Mace Jul 2013 OP
Berlum Jul 2013 #1
NYC_SKP Jul 2013 #2
Wounded Bear Jul 2013 #3
cali Jul 2013 #4
MineralMan Jul 2013 #5
Post removed Jul 2013 #6
MicaelS Jul 2013 #7
angstlessk Jul 2013 #8
MicaelS Jul 2013 #9
angstlessk Jul 2013 #10
pinboy3niner Jul 2013 #11
MicaelS Jul 2013 #15
Jazzgirl Jul 2013 #12
pinboy3niner Jul 2013 #13
MicaelS Jul 2013 #16
The Straight Story Jul 2013 #14
MicaelS Jul 2013 #17
LineLineNew Reply OK, then what I thought was a brilliant fail safe design apparently isn't.
Kelvin Mace Jul 2013 #18
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