鲜花( 0) 鸡蛋( 0)
|
本帖最后由 nnren 于 2011-2-11 16:45 编辑 & T; F, x( A7 A! u8 v- _
9 _* p/ B. v* o: U& p9 Q9 B想贴出来给大家看看。
; ~( \3 U! H$ z! s7 L& \9 N
& ?$ z3 z9 E; w' I! F5 a1 d" GSubject: Real Electrical Fire Example2 w! R6 Q- l) j& u
( {4 p0 K( o4 `6 _Basic facts of the case: *, ?7 ~5 r& B" f5 P) M3 x* P2 l. S
---Electrician received a work order to inverstigate why hall way lights wre not working in an underground pedestrican tunnel between two buildings
' c$ |9 \' m% t# j---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.
3 S* A9 F% D8 m---Electrician entered the room and when he opened the panel door, observed a series of breakers that were open in tripped position.
6 J% C# g+ E! v! |1 ?4 [---Electrician assumed since the breakers were in the same general area, they controlled the hallway lights.
8 @$ q$ G3 \& X---When the electrician closed the breakers, they immediately tripped again., q+ s. G( }: { U
---The electrician again closed the breakers and this time they stayed closed.
' F- s# O* ^( a: M+ ^2 i5 S/ ~---The electrician left the mechanical room to investigate whether the lights had come on or not.
7 m( g8 ~, z) \' j: `: T---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.5 O, E( J4 ^/ 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.0 R, |4 i3 B. g$ G6 q) c7 ?
---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.
7 U) |% `" ~, T0 Z. X8 r+ K---The local fire department was called and fire was extinguished.9 [; F6 e- q9 W/ k3 W
---Damage was confined to the mechanical room.
9 j6 |4 l1 w7 T. ~3 M9 V% e8 L7 z' r9 ]! d6 x( H" {
Additional Information---Mechanical room contained steam lines, chilled water pumps, and electrical panels
! T5 t5 T& R2 n3 e+ ~; U7 W/ p---Room was kept under lock and key
9 ~3 m+ X8 d4 ~! C/ i6 g) Q t' ?4 r---The electrical panel did not have circuit breaker labels.
" g! u8 B8 a" q9 q+ H" a0 S
. F) T- l# e( B+ ^) U" p' YDiscuss: --- What went wrong with this assignment?% j; R6 u% Z8 c/ v: v" H' K# T
* p: ^0 p# I$ G: ^
答案等有些回应再贴吧。 |
|