In might not seem like a big deal, but stopping and starting a commercial swimming pool treatment system is fraught with danger for those unaware of the hazards! In this video, I'll go through the issues and discuss a real-life case study where several unfortunate swimmers were gassed due to procedural errors by the pool operators.
0:00 Start
0:09 Loss of prime
2:10 Backflow
2:50 Chlorine gas hazard
3:44 Stopped circulation hazard
4:13 Chemical dosing interlock vulnerability
7:54 Distance between chemical injection points
8:35 The importance of knowing your system
9:08 Restarting circulation system after stoppage
10:43 Serious incident at David Lloyd Ipswich