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by Big Pete
Wed May 29, 2019 12:22 pm
Forum: Crew Mess
Topic: Frieghter journey from Boston to Japan in 1966
Replies: 2
Views: 122

Re: Frieghter journey from Boston to Japan in 1966

Hi the Sun, Interesting questions, I joined my first ship in 1973, she was a fairly standard refrigerated Cargo ship built in 1953, to a 1936 design, oil fired steam turbine Engines with a service speed of 15.5 knots, max 17kts equivalent to 372/ 408 Nautical Miles per day. We steamed from New Zeala...
by Big Pete
Wed May 08, 2019 7:57 am
Forum: The Workshop
Topic: De Salination
Replies: 1
Views: 102

De Salination

I just saw this article, about an alternative to Sea Water Distillation or Reverse Osmosis Plants, I wonder when it will appear on ships?


https://engineering.columbia.edu/press- ... salination


BP
by Big Pete
Tue May 07, 2019 12:33 pm
Forum: The Workshop
Topic: GEA Westfalia OSE 80- 0136_ Bowl leaking
Replies: 24
Views: 15658

Re: GEA Westfalia OSE 80- 0136_ Bowl leaking

If the sludge production has increased suddenly: - 1) Has the quality of the fuel changed? i.e. have you started using a new batch of Bunkers, or maybe your new Bunkers are not compatible with the previous Bunkers and the reaction between them is creating this sludge. 2) Is the purifier actually dis...
by Big Pete
Mon Apr 29, 2019 3:08 am
Forum: The Workshop
Topic: Confined Space Death on the Rise
Replies: 3
Views: 173

Re: Confined Space Death on the Rise

Safety is an attitude of mind, learning lots of "Factoids" to answer multiple choice questions, marked by machine, does not test understanding or attitudes to safety.
Big Pete
by Big Pete
Sat Apr 27, 2019 12:22 am
Forum: The Workshop
Topic: Confined Space Death on the Rise
Replies: 3
Views: 173

Re: Confined Space Death on the Rise

A very sad truth.
I think it is solid evidence that despite the introduction of STCW etc the standard of Seafarer training is declining rather than improving.
B.P.
by Big Pete
Thu Feb 14, 2019 12:52 am
Forum: The Workshop
Topic: Dirty/brown/orange colour cooling water
Replies: 27
Views: 1243

Re: Dirty/brown/orange colour cooling water

I agree that it has to be something to do with the overhaul and it very much sounds as if exhaust gas is blowing into the cooling water. You say that the water level goes up when you start the engine, does it go down again when you stop it? This is what you would expect if Gas was leaking in. If the...
by Big Pete
Wed Feb 06, 2019 8:32 am
Forum: The Workshop
Topic: Dirty/brown/orange colour cooling water
Replies: 27
Views: 1243

Re: Dirty/brown/orange colour cooling water

The temperatures are far too cold, you could have cracked the castings running them that cold and you may be getting gas blow from the cylinders into the water. I had cracked heads on one ship with MaK Medium speeds, we didn't lose any water, but when the power came up (and the cylinder pressures) e...
by Big Pete
Mon Jan 28, 2019 3:18 am
Forum: The Workshop
Topic: Engine cannot start
Replies: 28
Views: 1788

Re: Engine cannot start

When I was a Junior Engineer, back in the 70's, I joined a ship called the Strathleven, (ex Middlesex, ex Jellunga) that had been built in 1953 with twin RSG Sulzers. Before I joined, the Third on watch had heard a knocking noise from one cylinder and gone to get a screwdriver to use as a stethoscop...
by Big Pete
Wed Jan 09, 2019 10:02 am
Forum: The Workshop
Topic: Engine cannot start
Replies: 28
Views: 1788

Re: Engine cannot start

Oh Merlyn!

Trike has been long banned, very nasty stuff.

BP
by Big Pete
Mon Jan 07, 2019 12:47 am
Forum: The Workshop
Topic: Premature pipe failure
Replies: 5
Views: 536

Re: Premature pipe failure

I recently had an email from an old Cadet of mine and he told me that he was on a Diesel Electric PSV, and they had found that the Electromagnetic field from their 3 phase 690 Volt power cables was inducing a circulating voltage in the pipework! Which I had never heard of before, might be relevant.
BP
by Big Pete
Fri Jan 04, 2019 10:07 am
Forum: The Workshop
Topic: Dirty/brown/orange colour cooling water
Replies: 27
Views: 1243

Re: Dirty/brown/orange colour cooling water

Possibly while the system was drained down for the overhaul work, the insides of all the cooling system corroded and this is now coming into the cooling water. Unitor /Wilhelmsen etc make a commissioning cleaner for de-greasing and de rusting new pipework systems, maybe a power flush with that follo...
by Big Pete
Sun Dec 30, 2018 4:30 am
Forum: The Workshop
Topic: Engine cannot start
Replies: 28
Views: 1788

Re: Engine cannot start

Many years ago, I had a problem with a Paxman 4RPH, got a high exhaust temp alarm, seriously high and stopped it, Chief, Third and myself spent a week working on it trying to find the problem, 16 hours on 8 off. No Instrumentation on the engine, just a single exhaust gas thermometer after the Turbo....
by Big Pete
Sun Dec 30, 2018 2:50 am
Forum: The Workshop
Topic: 220V Insulation monitor, Low resistance/Fault from non earth TVs
Replies: 2
Views: 332

Re: 220V Insulation monitor, Low resistance/Fault from non earth TVs

I have had this experience several times and I have heard possible explanation, firstly you must remember that TV sets are designed for use ashore where the power supply consists of one live wire and a Neutral wire which is connected to Earth at the Star point of the supply Transformer. On a ship we...
by Big Pete
Wed Nov 21, 2018 12:51 pm
Forum: The Workshop
Topic: Premature pipe failure
Replies: 5
Views: 536

Re: Premature pipe failure

I suspect that the impressed Current system is either not working correctly or is set up wrongly. Go back to the Instruction Manual and see if there are set of settings for the "as installed" condition" and see if they are still the same. It looks as if there is too much current flowi...
by Big Pete
Wed Nov 21, 2018 12:48 pm
Forum: The Workshop
Topic: Black deposits on fresh water side plate coolers
Replies: 3
Views: 398

Re: Black deposits on fresh water side plate coolers

Poor cooling water treatment. The pipe work is rusting to form Black Iron Oxide (due to lack of Oxygen) which is dissolving in the circulating water and being deposited by Galvanic action onto the Heat Exchanger Plates which are less re active than the steel pipes.# Same as the steel Hull corrodes, ...

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