The information posted earlier in this thread on keg testing is specifically for commercial kegs. The big difference between commercial kegs and the ones most home brewers use is a Pressure Relief Valve, if that is fitted and working you cant blow up the keg!
Have had to write-off more than one keg over they years (ex-retailer) mostly in the days when "Pink" was in wide use, Pink and Bleach can both damage SS, the most common was a pin hole where the diptube met the bottom of the keg, a bit of chlorinated cleaner residue in the diptube would run down and sit right there until it ate a hole in the keg.
Most people are using non-chlorinated cleaners these days so less likely to be a problem - but don't use bleach on stainless.
Mark