Years ago at the most secure facility I have ever heard of, (North-American Rockwell in Rocky Flats Co.) a place wher all of our nuclear warheads are assembled with the proper dose of plutonium, I was doing retubing on an old Worthington R-11 chiller in the central plant. Due to the ungodly security concerns, the job lasted over three months in what should have been three weeks. Upon completion I wrote up the report and had it signed bringing to thier attention that all 5 of the 1500 ton chillers had the relief line piping paralled into a common six inch header. They promptly assured me this was up to code and had been like that for years..I happily left the site down the many mile driveway & returned to the land of the living. Within six months I was pulled from another job at #1 Wilhsire Blvd. in downtown Los Angeles on some identical Worthington chillers and sent back with escort to Rocky Flats..
The day before it appears that the #2 chiller froze and busted several tubes. As it finally thawed & pressurized the vessel, the rapid rush of water out of the relief line impacted the other chillers with such inertial force that each and every chiller was now flooded. including one of the chillers that had the refrigerant removed and stored for some repair work. I almost actually enjoyed the "I told you so" scenerio but with my customer relations being strained I held back....but with an almost smirk on my face.
They had gone from One chiller running & four standby's to zip-nada-zero chillers available..
With my present demeanor and attitude, should such a situation repeat itself I do not think I could prevent myself from uttering the "I told you so" along with a few nahhh-nahhh-nah's..
While our mechanical code is good, it surely does not surpass some common sense when it comes to fracturing a carbon rupture disc for example..
I returned to Hollywood Howard Johnsons hotel where I had breakfast every morning with Jonathan Winters and went to work daily with a belly hurting from laughing so hard...
Just food for thought guys..It could happen to you...Leave with a clear conscience guys and watch out for this.