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Tench Class-FOP's

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Runner485 View Drop Down
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Joined: 16 Dec 2015
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    Posted: 13 Feb 2019 at 12:45pm
Ok, in the 3 years I served on ss485 I asked and never received a positive, negative or even a neutral answer to the question; Can the Fuel oil purifier in either the fwd or aft eng rooms be cross connected to service the opposite engine room in case one purifier was out of service???

I must have had the answer on my system qual drawings but when I thought of this questions my drawing's were long gone, and when I tried to trace this out, I lost the line I was trying to trace out and could never pick it up in the other eng room...
Any of you old guys remember the answer to this. I would say, they would have to have this ability to service the opposite CFO tank...Come on you old enginemen...

My 77 yo brain comes up with no answer, right, wrong, or indifferent.
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Joe
SS485,CVA42
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Runner485 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Runner485 Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2019 at 1:04pm
I found the answer; which included a piping drawing...

Each tank averages about 600 gallons capacity in fleet type submarine installations. By means of a system of valves and piping, fuel

  Figure 5-6. Attached fuel oil supply pump, F-M.
Figure 5-6. Attached fuel oil supply pump, F-M.

oil can be pumped to either fuel oil purifier by means of the transfer and purifier pumps and discharged to either clean fuel oil tank. Also, the transfer and purifier pump may be used to draw fuel oil from either clean fuel oil tank and supply any engine directly, during priming operation.

A hand pump is connected to the clean fuel oil tanks to provide a means of checking the contents of the tank for water, for testing the quality of the oil, and for removing residual oil in the tank when it is desired to clean it.

Each engine in a compartment is connected to the clean fuel oil tank in the same compartment by a fuel line which goes from the bottom of the clean fuel oil tank up to the attached fuel oil pump on the engine. The attached fuel oil pump takes a suction from the clean fuel oil tank and delivers the oil to-the engine fuel system. If the attached fuel oil pump on one engine should become inoperative, it is possible to connect the fuel oil transfer and purifier pump so as to supply fuel up to the engine, thereby preventing a shutdown of the engine.

DBF
Joe
SS485,CVA42
Holland Club
Mid-Atlantic Base
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