I tried to go to work for Southern California Edison in 1969 after getting out of the Army in 1968, Edison wouldn't hire me as I had worked for three years for the phone company and they didn't want to hire someone they hadn't train
I had transfer into the installation and repair department in late 1966 before being drafted to learn more , I was in communications in the Army and mainly did clerical work do to the fighting in Viet Nam and me having a class 3 physical profile, bad vision needing glasses, I was not allow into a combat zone so I did as I was instructed to serve my time.
I install phone service for a young widow with a young daughter in late 1969, her husband had been a journeyman Lineman for SO CA Edison that was killed on the job by a power jumper wire he was forming to hook up a transformer going to a new house that he let touch the 12,500 volt primary power before it should have, he didn't have all the high voltage protection gear on and the power jump down the wire he was forming into his hands and then out of his hip to a anchor wire killing him instantly. I had several friends who work for Edison at that time and they told me later about what had happened, my message is to tell your Son to not let anyone kill him on the job, BE SAFE please
I hear what your saying about working in a power house and the noise, I've taken three tours of Hoover, Boulder Dam outside of Las Vegas, NV , Those turbine where not very loud though
My Father work in a power house for San Diego Power and water for a short while in the early 1950s, he worked on the big commercial diesel engines that drove the generators, very noisy