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swolverine
Michigan Fan
Member since Jun 2020
625 posts
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re: Human error blamed in elevator accident that killed Boston University teacher
This situation probably should have been escalated to a supervisor.


Chitown_Badger
Wisconsin Fan
A one drink walk from Wrigley
Member since May 2013
17197 posts

re: Human error blamed in elevator accident that killed Boston University teacher
quote:

This situation probably should have been escalated to a supervisor.


You forced this one.

3/10


thejudge
USA Fan
Westlake, LA
Member since Sep 2009
9899 posts
 Online 

re: Human error blamed in elevator accident that killed Boston University teacher
Elevators are simple for the most part and work off an inputn of switches.

In this case the elevator is called down and the instruction in the relay logic holds that command until the door switch (closed in this case) makes/breaks to satisfy the line or "rung" in the relay "ladder" logic. The next line of command is executed.

The maintenance guy pushed the button in the basement to call the elevator. When her large package hit the closed button at the top of the cage as she was entering/exiting the elevator... The relay/switch logic saw the input come in and executed the next command and the elevator moved down to it's next instruction. She would have been pinned.

This post was edited on 10/26 at 6:44 pm


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baldona
Auburn Fan
Florida
Member since Feb 2016
13343 posts

re: Human error blamed in elevator accident that killed Boston University teacher
quote:

How does an elevator going down pin her against a wall?

Feel like this article could be more clear but I might just be a moron



I’m not sure exactly but my guess is it was the wall by the door and the elevator. I’m guessing the large package kept the door gate switch in the “close” position, while the door was still open, and she was in the doorway thereby crushing her.

Seems crazy it’s just excused like this, but it’s possible there was a safety switch she bypassed thereby making it more dangerous then normal?


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gthog61
Georgia Tech Fan
Irving, TX
Member since Nov 2009
65732 posts

re: Human error blamed in elevator accident that killed Boston University teacher
quote:

You forced this one.

3/10



To be fair the joke buffet was picked over like the Golden Corral 30 minutes before closing when he got here.


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Ancient Astronaut
Ole Miss Fan
Louisiana
Member since May 2015
19902 posts

re: Human error blamed in elevator accident that killed Boston University teacher


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Ricardo
Member since Sep 2016
1677 posts

re: Human error blamed in elevator accident that killed Boston University teacher
(no message)
This post was edited on 11/22 at 6:42 pm


BHM
Member since Jun 2012
1826 posts

re: Human error blamed in elevator accident that killed Boston University teacher
Still don't get how this is human error. Can we call it crappy and unsafe design? My large package should not be able to activate a safety switch.


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