I don't fully understand this incident report.
A blocked pipe alone doesn't cause it to burst. It has to be combined with something that causes the pressure to increase, like perhaps a breakdown product that produces gasses?
A blocked pipe alone doesn't cause it to burst. It has to be combined with something that causes the pressure to increase, like perhaps a breakdown product that produces gasses?
https://www.csb.gov/assets/1/17/tpc_factual_update_10-29-202...
Bottom of page 7 it explains the mechanism. Essentially butadiene peroxides react with the butadiene to form the polymer 'seed'. The polymer is not stable and expands, increasing in volume.
I assume that with exposure to oxygen, the product expands into this polymer.