I have used these systems many times in the construction of large ships. They are robust and easy to install. I thing that they are also approved by all the major Classification societies for use in A60 divisions (as defined by SOLAS). Passenger ships use them in their water tight bulk heads...
I am a proponent of the paint top and bottom to protect the tank theory but see no reason for removing the primer. This primer is very resilient and can do no harm as far as I can see. If you have found something to the contrary please let me know as I am always willing to change my stance (and...
On large reversible marine diesel engines there is often a gear pump for LO which operates in either direction with the flow from the sump tank to the bearings directed by non return valves fitted in the suction/discharge of the pump. It is a very simple system but hard to put into words. does...
A recent case I was involved with highlighted the degree of flexing in the engine bed plate between loaded and ballast conditions. It may be wise to investigate the allignment in all the operating conditions and when the engine is "hot". Lloyds Register have a Technical Investigations Department...
I am sure you are awair of this but just a couple of things on safety. If you are rafting out tanks please remember your confined space entry training, vis toxins, poisions, oxygen depletion, meanse of escape, emergency rescue, isolation of the tank from other systems and for rafting, only raft...
Tomatage
As you probably know MARPOL annex VI gives limits to diesel engine exhaust emissions. For a Diesel Engine operating at less than 130rpm this amounts to 17.0 g/kWh, 45n*10-0.2 g/kWh for 130 - 2000 (where n is engine speed) and 9.8 g/kwWh there after. There are various weighting factors...
