4/15/2024 0 Comments Discovery life go com activateSometimes the system transits from "warning/slowdown" to "shutdown" very quickly, before remedial methods can be made. But, when you get to the "shutdown" point, continuing to run the engine will likely result in catastrophic damage to the engine, resulting in a non-repairable engine, especially if the engine is allowed to continue to run for extended time.įor propulsion, it is similar, with "slowdown" warning alarms, and "shutdown" alarms, set similarly, and for the same reasons the propulsion can run longer at a lower load (slowdown), but at the "shutdown" point, you are going to do irreparable damage to the system. The "warning" alarm is so that the engine keeps running, to give you time to remedy the situation (like filling the oil sump). In the case of the Sky, lets say the oil pressure "warning" alarm is set for 2 bar pressure, and the "shutdown" alarm set for 1.5 bar (sorry, the maritime has been metric for so long it is hard to think in Imperial terms). For engines, you will have a "warning" and a "shutdown". Typically, for diesel engines and propulsion systems you have two levels of safety equipment. I admit that my memories of your statements could be way off base but, coming from someone who is more knowledgeable of avionics than marine systems, overriding the shutdown of at least one system would seem warranted if the ship lost control in critical situations. One would think that overriding the shutdown of at least one system would prevent what was reported as drifting to shore. In the case of the Sky, I seem to remember statements from you and others stating perhaps that, although suboptimal, oiling was still occurring and total starvation was not an issue. In the case of the Spirit, one would thing that overriding the shutdown and, perhaps, one azipod would have reduced or eliminated injury and perhaps reduced demand on the cooling system. If essential equipment is overheating or some other safety system is triggered, an operator can override automatic shutdowns if an essential mission is close to completion or continued operation can save lives. In MIL equipment I've helped design, we have what's known as a Battlefield Override. Hi, I'm glad this came up because I've been looking for an opportunity to ask you a question about the Sky, it applies to this as well. Both pods would have been carrying the same amount of load (heat), and both use a common cooling system. Given the wording of Saga's statements, I believe this is the "automatic propulsion safety system" that caused the pods to shut down. I think that after hours of buffeting into the storm, the azipods had started to overheat, operating for hours at a time with a sub-optimal cooling system (cooling systems using sea water as the final cooling agent will always be sub-optimal after a few weeks of operation (marine growth fouling), and will continue to degrade until planned maintenance and schedule allow for cleaning), and they both tripped on high oil temperature. It could be that one engine failed, and required "load shedding" (dropping enough electrical demand to match the reduced capacity), which would shed the propulsion load, as this is the largest load on the ship. Since the Saga ship did not lose power completely (the lights didn't go out), this isn't what happened here. The Viking Sky incident had all three engines fail from the same shutdown alarm (low oil pressure), but they were separate safety systems that shut the engines down at the same time due to identical circumstances in all 3 engines (low oil level). A confirmation window appears.Both pods at the same time? You are the mariner (I am not) but cannot help thinking about the Viking Sky incident when a safety system shut down all the power (apparently due to an indication of oil starvation). From Admin (on the sidebar), click Subscription.ģ. Note: To bypass the free trial, click Or subscribe now.ġ. Ready to start scanning your end-user networks? Note: Only Admin users can activate Network Discovery.įrom Network Discovery (on the sidebar), click Get Network Discovery.
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