On Thursday, July 24, 2014 6:34:34 AM UTC+1, harry wrote:

Total bollix.

I have hundreds of freeze ups. The pipe always splits axially after

bulging.

Unlikely that a soldered joint would fail before the tube split IMHO, but you're assuming the joint had been properly made.

It's still possible if it hadn't been done correctly (wrong clearances, wrong solder, solder overheated & degraded, incompatible fittings, etc.,).
There're just so many ways to cock it up.