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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。
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Subject: Real Electrical Fire Example# |( r% W5 [5 t* ]' |
# M$ s6 E: o1 z$ @Basic facts of the case: *4 L( }& A, G) y/ z0 [6 j
---Electrician received a work order to inverstigate why hall way lights wre not working in an underground pedestrican tunnel between two buildings
Y, \( _/ c) n& Z Z' s---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.
- R0 |. K7 [/ [# b4 e---Electrician entered the room and when he opened the panel door, observed a series of breakers that were open in tripped position.+ W8 W, c( c2 k7 ?; M; A. Z
---Electrician assumed since the breakers were in the same general area, they controlled the hallway lights.9 {! z9 o" n/ c; Y/ S+ i
---When the electrician closed the breakers, they immediately tripped again.
+ {( j7 K7 G/ ^7 x$ K% J---The electrician again closed the breakers and this time they stayed closed.
& h, i! X" D* I. {! h---The electrician left the mechanical room to investigate whether the lights had come on or not.0 L# U/ T# \+ j+ k
---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.
" X3 p, } x: L/ L9 K---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.
. _. ~- o. A" M0 l3 Q3 g0 u F; N---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.
2 l/ T5 B7 O& _0 h5 D---The local fire department was called and fire was extinguished.
$ l( S" J* b8 _# ^; {* \+ O& i) v---Damage was confined to the mechanical room.
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Additional Information---Mechanical room contained steam lines, chilled water pumps, and electrical panels
8 S$ _! T6 t. Y) j3 J+ ]6 U) w---Room was kept under lock and key! V& }" Q! H% I+ e0 ?8 w
---The electrical panel did not have circuit breaker labels.+ H7 O' \8 x8 |6 j/ S9 e* i
$ ^; a2 ?5 U N: a7 a' P2 oDiscuss: --- What went wrong with this assignment?5 M1 g' [& S( j9 K
, G# D7 w, I& M6 _- C, a: `5 G答案等有些回应再贴吧。 |
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