Impact, water hammer, pounding on or jerking the pipe around at the Cryostop™ freeze plug location. Again, these are not quantifiable hazards but it is obvious that temporarily super-cooled pipe shouldn’t be abused with impacting stresses. This is why CRYOSTOP International insists on things like: (a) locating the Cryostop™ freeze chambers back away from your work location; (b) absolute securing of the pipe if its going to be opened or cut, and; (c) if feasible separate bell holes for the Cryostop™ freeze plugs and your work site if the job is on underground piping.
