Pradeep, you have done all you can. I have had the same issue with AC, Tamrotor and Ingersoll Rand screw compressors. I have taken them to bits to find out why they run so hot with no answer. I still had to run them with the door open. If you want the door closed you have to run some ducting from th...

Atlantic asks a crucial question; are you burning HFO? At continual low load it will become a problem. I don't know if 50-60% is low load in this case. I have a manual which states that low load is below 90kWe. Engines without VIT cannot cope with low load very well, I can't figure out the electrica...

Hello Mithrandir. Yes, it does sound like the governor; sticking rack, seized weights, broken governor link, throttle spring. I am not clear on the holes in the side of the nozzles; it sounds like the nozzles were blocked (low load running), corroded? High viscosity? but you are using DMX/A/Z fuel. ...

I know this is old but I have a lot of time and if I don't have a hull or machinery to obsess over I will go mad. Assuming you are aware that SMS is the sludge monitoring system it appears that timer 21 is set to 10 minutes. Timer 21 monitor's the SMS and should prevent an ejection in the time perio...

It is not sensing the pressure rise from the displacement water when V4 is closed. If you are producing a lot of sludge, more than water then the water supply SV10 may be a problem you may not be getting the 1.6 l/m, check in-line filters etc. Don't use shore water in the operating system. Sludge cy...

Thanks Big Pete, all spot on and pretty much where I'm at. The LO is MELO and no there are no records. Now using Hydrox which if they had been using originally we would not be in this situation but that costs money and as we all know what ship owners are like. Thanks Merlyn, it is nigh on impossible...

Call general muster. Stop everything including QCV's, batten down the engine room and inject CO2. Wait for as long as possible then BA team to make entry at lowest point with foam branches and water wall while ventilating the space.

As an engineer with P&O/Princess Cruises for 14 years I can assure you that this is highly unusual and very surprising. It is no way 'rampant'. The chief engineer will more than likely go to prison. It is not so long ago that passengers filmed a vessel of the group dumping sacks of garbage over ...

Dear Wojtasfans Medium speed CR engines differ from slow speeds in that a MS cannot be 'camshaftless' a MS engine needs a camshaft to operate the valves. A slow speed uses ports for inlet and a hydraulically operated exhaust valve, or loop scavenged. While the camshaft still drives the pumps on 2S a...

Thanks D, I understand your line of questioning but unfortunately I was not on-board the vessel at the time, plus, the information I am being given is the information that the owner wants me to have. My own investigation is limited and therefore there are certain assumptions that I have to make whic...

Hi Vegman I was watching this job recently in DD (single pintle, semi-balanced) and the welded cover (actually this was a bolted and jointed cover) was removed. It is much easier and accurate this way i.e. you can see that you are getting a true clearance and not measuring a 'lip' in the bush or lin...

Thanks Merlyn The wear is all in the bottom of the bearing as the mass of the tailshaft and propeller is approx. 20 tons and is always acting downwards (negating transverse propeller thrust from hard turns or the 'hand' of the propeller). There is no wear in the upper portion so saying 'per side' is...

Thanks D and Revolver There are no pumps or coolers (apart from the forward seal 'circulatory' tank which cools the oil by convection). The only pump is a transfer pump for topping up the header tank. The cooling comes from a cooling tank which surrounds the stern tube and is permanently filled with...

Thanks Merlyn, the misalignment is a symptom not a cause. The original calculation and the real world measurements were all within IACS rules for bearing reaction and misalignment tolerance. There is no sign of bottom damage. Thanks D, a mathematical solution does have many variables that is why I w...

Good day all I'm looking for a ball park figure for wear in a single (aft) oil lubricated stern tube bearing and its steel backing. The shaft is 470 mm diameter. Material unknown The bearing is 4 mm thick. Material is PbSb10Sn6 The steel backing is thick. Material is EN-GJL-250 Say the propeller and...