in the united states and around the world. i m alex marquardt in washington. and i m anderson cooper on the canadian coast. a new mission to investigate the debris of the imploded submersible. the company under intense scrutiny, as we re learning about early warnings that the sub might be unsafe. cnn s new reporting on the special counsel s january 6th investigation. sources revealing that at least two fake trump electors were given limited immunity in exchange for their grand jury testimony. and the chief of the wagner private military group makes a powerful claim, accusing leadership of killing a huge amount of its mercenary force, describing its actions as evil. we ll break down what this could mean for russia s war in ukraine. you re in the situation room. we are coming to you live from canada, st. john s, newfoundland. this is a key staging ground for the investigation of the deadly submersible. many critical questions remain unanswered, as a new mission is und
The most consistent violations during inspections relate to fire extinguisher annual service and inspection. Here s what safety professionals need to know.
but these vessels typically needed to be pressure tested more often. and they typically have additional safety measures. and they almost always fail way earlier than a comparable steel structure. rachel, what would testing it more often this was only done seasonally. so, if they had tested between each use, would that be possible? would that have detected something? how rigorous kind of testing does it need to be? it depends on if you re doing it properly. so, when done properly, that kind of hydrostatic testing tests the vessel, the pressure vessel, to larger pressure differentials than what actually occur in the actual real life use. so, what that does is it provides for a margin of safety. typically it goes to roughly about five-thirds. so, if you re overpressuring it in that safer test environment
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