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#4385186 - 04/21/17 02:10 PM Ship changes oil every TWO hours!
sasilverbullet Offline


Registered: 08/22/04
Posts: 1422
Loc: San Antonio, Texas
At 42:10, they say they have to change the oil in the 9 piston, 50K bhp engine every two hours!



Yikes!

Let's have some fun, please let's all apply our BITOG funny comments to this one... smile

banana


Edited by sasilverbullet (04/21/17 02:10 PM)
Edit Reason: fixed video link
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#4385192 - 04/21/17 02:15 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
i_hate_autofraud Online   content


Registered: 05/19/16
Posts: 705
Loc: Canada

On most ships I've heard the opposite, oil stays in a dry sump tank and is filtered extensively
and used over a year, sump tank is often 1,000 gallons!

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#4385243 - 04/21/17 03:06 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
SirTanon Offline


Registered: 06/23/14
Posts: 2157
Loc: Phoenix, Arizona - USA
That HAS to be a mistake.. either that, or he means that during the initial systems check process prior to its maiden voyage, it needs that.

If it DID need to be changed out that often during normal use, then on any standard voyage, I'd have to think they'd be going through potentially tens of thousands of gallons of oil on a normal tanker run... if not more.

Plus, shutting it down every two hours and draining and refilling the oil would result in ludicrous amounts of down-time every single day. Merely draining and refilling the oil from that engine could take longer than 2 hours.


.. That said, I think they should do a UOA of that 2-hour oil and send it in to Blackstone. I bet their analysis includes a comment like this:

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#4385258 - 04/21/17 03:26 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
raytseng Offline


Registered: 12/11/08
Posts: 2339
Loc: CA
sure maybe the oil gets changed but perhaps that terminology is misused as the oil might get filtered and reconditioned by some separate unit and eventually comes back to the engine. but for the purpise thata cobsidered a "change"

perhaps it means oil take a 2hours to make it back to the engine aftet going through whatever cycle it has.


Edited by raytseng (04/21/17 03:27 PM)

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#4385261 - 04/21/17 03:30 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7479
Loc: S California
This is a heavy crude oil fired engine. That means it's direct drive, no gearbox. When you start the engine you're going to go somewhere right now.

The oil change comment is more of an oil maintenance cycle. The heavy oil gets cleaned and reused.

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#4385276 - 04/21/17 03:41 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
Rand Offline


Registered: 08/20/03
Posts: 12643
Loc: NE,Ohio
Just a sensationalist comment nothing to see there.

Dumbing it down to make it sound cool.
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#4385295 - 04/21/17 04:01 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
JHZR2 Offline



Registered: 12/14/02
Posts: 41784
Loc: New Jersey
Maybe it circulates all the oil in the sump through the engine in two hours (seems slow but with a big enough sump anything is possible). Or fully filters/bypasses it? Or are these two stroke engines with enough lubricity in the heavy oil?

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#4385304 - 04/21/17 04:09 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Whoever wrote the script didn't understand Marine Engines.

The engine lubricating oil gets centrifuged and filtered and the heavy portions of the centrifuged oil is discarded.

Due to consumption for whatever reason, new "make-up" oil is added every two hours, drawn from the reservoir.



Edited by MolaKule (04/21/17 04:13 PM)

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#4385332 - 04/21/17 04:41 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
They should use Supertech conventional with an OCI that short.

;^)
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#4385342 - 04/21/17 05:03 PM Re: Ship changes oil every TWO hours! [Re: OneEyeJack]
OldSparks Offline


Registered: 07/08/07
Posts: 303
Loc: Ottawa, Upper Kanuckistan
Originally Posted By: OneEyeJack
This is a heavy crude oil fired engine. That means it's direct drive, no gearbox. When you start the engine you're going to go somewhere right now.


Probably runs both HFO and LSFO because of the changes to the MARPOL Convention.

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#4385343 - 04/21/17 05:04 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
carviewsonic Offline


Registered: 08/17/16
Posts: 217
Loc: Alberta
I was surprised to read that these engines use 30wt in the sump, I would have thought a heavier wt, given the scale of these engines. 50wt is injected at the top end, since they are two strokes. For an emergency stop compressed air is used to stop and then reverse the engine, before fuel is injected to run engine in reverse. Kinda cool I think, at least to a landlubber like me.
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#4385398 - 04/21/17 06:39 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
Mr Nice Offline


Registered: 09/12/04
Posts: 21196
Loc: Orlando, FL
Just like any very big engine, it has a huge oil sump.

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#4385422 - 04/21/17 07:12 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
BrocLuno Offline


Registered: 09/06/15
Posts: 5518
Loc: Kalifornia Kollective
All the ships I worked on had somewhere between 800 and 1,200 gallons of lube oil. Oil/Water separator, centrifugal filter and filter chest with bats that could be re-cleaned and re-used. Typical turn-over was on the order of all oil passing the filtration system about every 4 hours if turning max revs ... Total filtration was/is a statistical exercise as some oil get recrirc'd much quicker and some does not get off the bottom of the tank for a while (tanks are baffled for rough seas).

Oil changes depended on total steaming time vs at anchor time, and UOA done every 150 hours based on the control board meters. Oil samples were taken even en route and shipped to lab from next port of call. If lab said oil was getting depleted, it was changed dockside from a pumper truck at next contracted port of call, or home port - whichever came first.

Changing ships oil is not fun or cheap...
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#4385426 - 04/21/17 07:16 PM Re: Ship changes oil every TWO hours! [Re: Mr Nice]
Kira Offline


Registered: 08/19/10
Posts: 5241
Loc: Champlain/Hudson Valley
My money's on bad script writing. Truly, nobody cares when a cheap production deadline comes 'round.

Believe me, a TV show made from mostly stock footage of any industrial process is the epitome of cheap production.

As stated by previous posters, likely 100% of the oil is cycled through its filtration system and topped off every 2 hours.

That cabin boys were sent into the Hindenburg's engine nacelles for 2 hour stretches to listen for abnormalities is very cool.

LESSON: Old black and white footage = truth
..............Modern color documentaries = bull fertilizer

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#4385514 - 04/21/17 08:59 PM Re: Ship changes oil every TWO hours! [Re: sasilverbullet]
OPR4H Offline


Registered: 03/01/17
Posts: 148
Loc: Orbit
This engine was at Breakin, maybe they changed the oil at every 2h.
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