Two of the LNG distribution facilities my dad had to keep on line used engines like those to power huge compressors to move the LNG thru the pipelines...they ran at 900 rpm if I remember correctly ,you cant hear anyone 2 feet away when it was running!...whole building would vibrate too...
They were pretty impressive to a 13 year old kid ,seeing one in operation for the first time..
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My dad got called out at often in the middle of a cold winter night ,pressure and other monitors alarms used to go off often at the LNG pumping stations and they auto-dialed a phone number at the gas company,and they would contact my dad--my dad would have to go there to check things out,and sometimes supervise unloading of LNG tank trucks..most of the time it was just a "false alarm"..
The first time I went with him to keep him awake during the 45 minute ride to the plant ,we were going about 85 mph in his '71 Chevelle wagon "company car"--its little 250 six screaming full throttle.....and a state cop came flying up behind us and pulled him over about 10 miles from the plant on the highway..asked him whats the big hurry,dad pointed to the gas company logo on the door and said "If I don't get to the plant soon enough--there could be BIG troubles,if the alarm isn't a false one"...
The cop escorted us to the exit we had to get off at,and he flew past it,had to back up and he followed us to the plant ,I guess to make sure my dad wasn't bluffing...soon as my dad opened the door to the building,the state cop said "OMG,it smells like a bad leak!--have a nice night",and got in his cruiser and sped off...actually it was "normal" to smell that skunky stench,which was mixed in with the gas at the facility to alert for leaks easier..
I had the same reaction when I first smelled it..thought "oh great--the place is gonna blow up!"

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My dad told me to come inside,that's when I saw the biggest "big block" I ever saw..then he told me "you'll get used to the smell in a few minutes,you wont notice it much"...some nights he slept at the plant on a cot when we had cold snaps,rather than make several trips when the monitoring system had issues..place looked to me like the control center at NASA with all the buttons,pilot lamps and paper graph recorders ..