Can Boiling water damage PVC pipes in your drainage system?

Can Boiling water damage PVC pipes in your drainage system?

If you have hot water to get rid of it seems like tipping down your sink or other plumbing drains is the natural way to go. But this easy disposal may lead to severe consequences for your plumbing pipes when constructed with UPVC piping. If you have been having continuous problems with blockages and slow running drains a melted or deformed drain piping caused by boiling water damaging your pipes may be the issue.
Understanding the Heat restrictions of UPVC plumbing pipes:
UPVC drainage pipes commonly used in domestic installations have a maximum recommended temperature of 80 degrees celsius. This refers to sustained exposure. Boiling water will pass through UPVC pipes too quickly to melt it, and the wastewater will promptly cool to a safe temperature. But, if the water gets slowed down by a flat section of a drain or a partial blockage, it can be in contact with the waste long enough to cause the pipe to expand and melt. Besides causing the pipe to deform, this can lead to pipe leaks and the restriction of water flow, making the potential for blockages and failures much higher.

Hobart Tasmania Drain Overflow Disaster