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本帖最后由 nnren 于 2011-2-11 16:45 编辑
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想贴出来给大家看看。! e% F: R. h! f0 j
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Subject: Real Electrical Fire Example5 [- m L; Q( Y4 B
2 B$ T* ~+ l! O" B( y* ]4 }Basic facts of the case: *' C! m: @% [" A; }' G- u" _
---Electrician received a work order to inverstigate why hall way lights wre not working in an underground pedestrican tunnel between two buildings/ T; q; p8 }+ G, ^
---Electrician went alone to investigate an electrical panel in a mechanical room where he thought the breakers were located. Note: the mechanical room is located in the same underground pedestrian hallway.0 j8 ~) B7 }* m6 x5 F
---Electrician entered the room and when he opened the panel door, observed a series of breakers that were open in tripped position.
+ Z F4 C& M' G& X---Electrician assumed since the breakers were in the same general area, they controlled the hallway lights.- d3 e+ E( O4 {5 t
---When the electrician closed the breakers, they immediately tripped again.
: D, R& V5 _( _: f6 F, d---The electrician again closed the breakers and this time they stayed closed.
. J8 d, t) m G0 b---The electrician left the mechanical room to investigate whether the lights had come on or not.' }6 S1 _ p8 s, d0 Y( q" ?' s
---The hall lights had not come on , so the electrician assumed there was another electrical panel for the hall lights, and went to maintenance to find a print.
6 s: J, _- r. ^2 f' A% @---Sometimes later, as a security guard was passing the door that led to the mechanical room, the observed smoke coming from the electrical box and immediately called for an emergency.
+ p: J/ K0 h ]' K' a---The underground pedestrian hallway was located above one of the office buildings, and therefore the entire office building had to be evacuated because of the fire and smoke.$ @( M( F+ y7 \4 U2 I: V0 n
---The local fire department was called and fire was extinguished.1 |# |2 g. d" G1 Z, T2 U
---Damage was confined to the mechanical room.
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% Y" R" Q+ P6 @# n; }4 I( y8 xAdditional Information---Mechanical room contained steam lines, chilled water pumps, and electrical panels
8 W. E8 U: f" O' v, ~9 [( E" N6 |---Room was kept under lock and key
: s( g! ~) s3 S& C---The electrical panel did not have circuit breaker labels.
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- Q, U3 Q1 U( R! y v' w0 W+ TDiscuss: --- What went wrong with this assignment?
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! L. }/ o" v6 |3 O5 N& |1 p' C: u答案等有些回应再贴吧。 |
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