..sorry , MPT.. main power transformer,
in the second shot there is a scorch mark on the wall ,see it ? from where I was hiding I was looking straight toward that mark, or perpindicular to the sidewall.
the generators 138Kv output supplied ...thru an Aux. transformer in the middle of the first picture... plant power ..(4160V ) and then the MPT whose HV side was 345Kv
I was in the area , along with about 15 other folks, waiting for a test of the MPT to begin, ( it had been taken out of service because of a very bad installation procedure that had damaged the 138Kv bushings.... ) prior to the repairs, and following a procedure the cables from the Aux trans. were disconnected at the terminals in the damaged cabinet and
the temporary power was then reconnected to those terminals and a barrier was placed in between the live and disconnected cables. additionally the utilities Air break and the Air break at the MPT were locked OPEN.
This plant was still in the comissioning stages and not fully operational,and the clock was running
when the repairs were completed about two weeks later, the start -up folks wanted to get under way ASAP !
Now ,I was the GF for the start -up crews and was out there to basically CYA if there was a problem. in other words ..just observing
I was standing next to the senior start-up engineer when the test began, it occured to me that no one had insulated the still disconnected 4160V cables in the top of the cabinet, and I mentioned that to the Eng.......
.......this space left intentionally blank......
I also had my camera w/ motor drive with me , and started snapping away when the Air break started coming closed......
its been 4 years and I can still hear that sound, ...look in the back of the truck, see the red GAS tank
