RE: AM RNS13 Nov 2018 12:30
Brilliant wellwell, you've analysed it as it is. No historyonics like from some people who don't know, just practical cold analysis. Some here need to go into a ships machinery spaces to realise how many systems there are to cover all the ships functions; propulsion, power generation, oil & fuel transfers pumps, coolers, filters, starting systems, bilge pumps, hotel services for a start.
On two sea trials I attended crankcase explosions caused engine stoppage and engine room evacuation. Mandatory explosion doors on the crankcase saved the engine. Cylinder liners had overheated and cracked. Pulling the pistons showed overheating and extreme lack of piston cooling. As engine builders we could not understand it.
After the second failure a long survey of the engine room after hours of searching found the cause. The pistons were cooled on a separate 4" pipe circuit with its own pumps, oil coolers and filters. In their own 'wisdom' the ship builder had ignored the engine makers recommended sytem of a bank of large oil filters and fitted a small 6" diameter in line filter which had severely restricted the piston oil flow thus causing the failure.
Expect the unexpected and don't trust the ship yard on everything.
Not that anything like that happened here but a fault was found which had to be resolved so as not to compromise safety. Safety is uber important, there is no AA at sea.
I guess they know the problem, it's what's required and how long to fix. Don't worry, the industry is geared up to get things fixed quickly and slack is built into any programme..
Upwards and onwards.