measuring report from 16/07-2017 · pdf fileconclusion 29-07-2017 ... run out of shaft ......
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Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
1
Measuring report
From
16/07-2017 Epic Burano
By Christian Munkholm
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
2
Index Index.......................................................................................................................................................... 2
Conclusion 29-07-2017 ......................................................................................................................... 3
Meeting the 16-07-2017 ........................................................................................................................ 4
Pictures from engine room 16-07-17 .................................................................................................... 5
Pictures from engine room .................................................................................................................... 6
Meeting the 26-07-2017 ........................................................................................................................ 7
Pictures of Intermediate bearing journal 16-07-17 ............................................................................... 8
Pictures of Intermediate bearing journal 26-07-17 ............................................................................... 9
Jack-up results ..................................................................................................................................... 10
Jack-up MB 6 ....................................................................................................................................... 11
Jack-up MB 7 ....................................................................................................................................... 11
Jack-up Flywheel ................................................................................................................................ 12
Jack-up Intermediate bearing .............................................................................................................. 13
Jack-up Sterntube ................................................................................................................................ 14
Run out of shaft (trueness) .................................................................................................................. 15
Deflection before repair 15-05-17....................................................................................................... 16
Deflection after alignment 27-07-17 ................................................................................................... 17
Deflection after repair 29-07-17 ......................................................................................................... 18
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
3
Conclusion 29-07-2017 Reason of visit:
Measurements in dock showed deviations between Stem tube line and ME.
Objective:
To realign intermediate bearing to accommodate loads in all bearing
Action taken:
Realignment of IB, reconnecting of intermediate shaft to flywheel. Consulting with superintendent.
The process:
During our first visit we made a list (16/7/17) of things that needed to be in order before the alignment
process could start, upon arrival (26/7/17) we quickly concluded that the intermediate bearing cleaning
had been forgotten. As a result the shaft journal was completely covered in dust and rust, this was a re-
ally bad situation to start with.
The bearing shell now needed to be removed to polish the shaft clean again, and the bearing house
needed a good cleaning to. Before any turning of the shaft could be done.
Lubrication of the engine is normally a job that requires a push of a button, but in this case both main
lube oil pumps had been overhauled by the yard, and apparently not tested after completed. This re-
sulted in 5 hours delay.
They got one working enough to oil the ME bearings and our work could start.
We had to reposition the intermediate shaft to the flywheel, so it came back to org. Position (bolts
holes). This was not a simple installation as the yard had forgotten to mark the shaft to the flywheel in a
way that was useable. We had requested the yard to correct this issue 12 days ago but after 4 days they
asked if we could do it since they didn't felt comfortable doing it. Which we could understand since
they hadn't marked the bolts proper either. This is a normal yard job, we normally don't do this kind of
work...
(A yard this size shouldn't have any problems reinstalling something like this).
To help the process we got it done, and installed 4 org bolts in position, the yard was a bit confused that
we didn't need there fitting team. But since they had no information, nor could they follow instructions,
we had no use for them.
After the shaft was installed we could now start the realignment of the intermediate bearing.
After adjusting the bearing, and installing the original steel shocks.
We measured the Stem tube, intermediate bearing, flywheel MB7 and MB6 with our jack-up system
and found all measurements inside desired limits. After that we made a deflection on Cyl 4-5-6 all with
satisfying results
We also made a run out (shaft true run) in 4 positions along the shaft line, all measurements with satis-
fying results.
Yard thereafter did a full deflection…..
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
4
Meeting the 16-07-2017 Present:
Ship inspector, Pallikuth Premanand
Captain and chef engineer.
Ship yard coordinator,
Alignment engineer, Munkholm Consult A/S. att, Maik Reimers and Christian Munkholm
Purpose for meeting: to plan the procedure for the realignment.
After a short visual inspection MC made a list of topics, listed below.
These items was then read up in the meeting and agreed by all parties.
1: Draft. According to the calculations done by MC the draft should be 6,5m during the alignment to
give the best condition, this is draft, however is not reachable without cargo, captain supplied MC with
calculations regarding draft deeps, and MC will make a new shaft calculation.
2: Water.
During inspection water was found in the general area of the shaft line +150/250mm, and tanks. Due to
a pipe leak.
Upon visual crank house inspection MC found what looks to be water in the ME oil sump (inside the
engine). It seems that after pressure test on ME the pipes was not secured so when water came to
engine room it went inside via the pipe.
Furthermore there were oil under the ME, so the bottom flywheel teeth were submerged in oil/water.
This makes it a bit difficult to measure.
3: The intermediate bearing.
The bearing was open and not sufficiently covered, the top cover and top shell was not covered at all.
Both need to be well cleaned before alignment start.
Furthermore the seal covers, sims (steel shocks) and foundation bolts needs to be collected, cleaned and
placed in a proper place and not 3 different places incl. on the tank top(haft under water/oil.
4: Fitting bolts.
All fitting bolts must be cleaned, the threat checked and stored proper. The problem we can get now is
that they didn’t mark the bolts to the holes. Furthermore they haven’t marked the flywheel to the shaft
which can be seen by the fact that the shaft wasn’t centered to the flywheel.
5: Jack-up beam
The org. jack-up beam for bearing replacement inside the ME, was no were to be found, so chef
engineer is on a mission to find it, (this is an important part to know there is, if a bearing “burns” at sea
and you don’t have the beam, the installment time will be a lot longer.
6: Deflection of ME.
We all could agree that no deflection would be made before the oil/water problem is solved.
7: General cleaning in aft end area should be done before alignment procedure is started.
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
5
Pictures from engine room 16-07-17
Example of
uncovered
pipe
Unprotected
bearing parts
Shaft is not
centered to
flywheel
Holes don’t
line up
Bearing is
not covered
good enough
therefore its
dirty inside
Oil level
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
6
Pictures from engine room
Lose bearing
parts
Fitting bolts needs to
be cleaned (should
have been marked to
holes
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
7
Meeting the 26-07-2017 Present:
Ship inspector, Pallikuth Premanand
Captain and chef engineer.
Ship yard coordinator,
Alignment engineer, Munkholm Consult A/S. att, Maik Reimers and Christian Munkholm
Purpose for meeting: to get on track with the preparation for the alignment.
The list from the first meeting (16-07-17) there is some points that is not completed to satisfactory
condition.
New list:
1. Intermediate bearing cleaning. This should have been done after the last meeting, before the
bearing surface got very rusty (see picture). Now we have to uninstall the lower part of the
bearing and polish the journal area and re-clean the bearing housing, this is double work and a
completely waste of time and resources since this could have been avoided, by doing it proper
the first time.
2. The intermediate bearing parts a still unprotected and as a result the top cover and bearing shell
is dirty again (if ever cleaned).
3. Fitting bolts was supposed to be cleaned. To be fair the bolt tread was greased and checked, but
the surface of the bolts was not cleaned or polished at all.
4. The overall cleaning standard is very poor to say the least, there is still oil and grease all over
the place.
5. All lube oil pipes has to be installed to be able to lube the ME before turning. Therefore we
can’t reposition the intermediate shaft to the flywheel.
The sum of these point add up to more delay by min one day extra. Even though the yard had ten
full days to get this in order.(original time expected 4 days).
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
8
Pictures of Intermediate bearing journal 16-07-17
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
9
Pictures of Intermediate bearing journal 26-07-17
As seen on the first picture from the 16-7 the journal was not in good condition, but now it’s
considerably worse.
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
10
Jack-up results
cold
condition
All
loads in
kg
MB 6 0,9 1922 1729,8 2000 2400 / 1600 -270,2 13,51% OK
MB 7 0,9 1350 1215 1201 1441,2 / 960,8 14 1,17% OK
Flywheel 1,3 26783481,4
3765 4518 / 3012 -283,6 7,53%OK
IB 1,02 2111 2153,22 2283 2739,6 / 1826,4 -129,78 5,68% OK
Sterntub
e1,01 471
475,71400 480 / 320 75,71 18,93%
OK
20%
Jack
pos.
Jack
factor
Measured
kg
Calculated
kg
Rated
Load
kg
max allowed
deviation +/-deviation
kg
deviation
in %Status
Explanation of results.
Measured kg input comes from the jack-up taken on the vessel. Rated load is according to org. make
design.
Normal class requirements is to be inside +/- 20% and maximum 80% of max bearing capacity.
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
11
Jack-up MB 6
Jack-up MB 7
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
12
Jack-up Flywheel
Sensor 1 (red) flywheel (jacking pos)
Sensor 2 (blue) IB deflection measure point
Sensor 3 (green) Sterntube
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
13
Jack-up Intermediate bearing
Sensor 1 (red) aft side of IB (jacking pos)
Sensor 2 (blue) flywheel deflection measure point
Sensor 3 (green) Sterntube
Explanation of measurement.
During a normal jack-up the standard setup doesn’t allow you to see any graphic during the
measurement which limits you, to see the finished graphic only and not the reaction on the bearings
during the measurements.
Our system allows us not only to see the reaction during the measurements but is also capable of
showing us the nearby bearing reactions during the measurement. This gives us a unique why to
understand the measurement.
Ex.
During this measurement S3 is moving as soon as the load is applied at S1.
This is because of the very low load residing in the sterntube (as per makers design).
So when seeing this measurement with a normal system you would (without knowing it) take the result
higher on the graphic and getting a higher load result then the actual IB load reaction.
When getting near 8ton we see the S2 sensor moving this tells us the same as the S3 now the flywheel
reaction is also in play. If the standard system was used the IB result in this condition would have been
must higher (and wrong). This is one of the reasons many vessels in this size doesn’t have any jack-up
reports from newbuilding or service time.
If you don’t have proper equipment you result will never correspond to the calculations.
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
14
Jack-up Sterntube
At 0,20mm lift the seal will start to leak (very little)
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
15
Run out of shaft (trueness)
Maximum allowed deviation 0,30mm
The run out shows a result better than many new vessels, so this is very satisfying.
0 45 90 135 180 225 270 315 0/360
flywheel 0 -4 -2 0 -1 3 4 1 0
IB shaft fwd 0 5 2 1 -1 -2 2 0 0
at IB 0 -2 -1 -1 -1 -1 -1 -1 0
at sterntube 0 -1 -4 -4 -2 -1 -3 -1 -1
-20
-15
-10
-5
0
5
10
15
201/100MM
IB
flywheel
Fwd
sterntube
liner
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
16
Deflection before repair 15-05-17
Please Note: when doing deflection, the aft 3 cyl. Always Need to be without force from turning gear.
That means for every point, stop and make sure teeth on gear is not forcing the flywheel.
Munkholm Consult A/S Crankshaft DeflectionCostumer xx Hours Ship Measured by Date
Engine 6S35mc-6 Temp bot Temp top
CFM Deflection Tolerance vert ical Tolerance horizontal
Crank A B C D E Vert ical def lect ion Horizont al def lect ion M ax M in M ax M in
1 0 3 18 8 1 17,5 5 24 -24 24 -24
2 0 2 5 5 3 3,5 3 24 -24 24 -24
3 0 -1 1 2 3 -0,5 3 24 -24 24 -24
4 0 2 4 3 2 3 1 24 -24 24 -24
5 0 -1 0 2 2 -1 3 24 -24 24 -24
6 aft 0 3 12 9 2 11 6 24 -24 24 -24
A B C D E
Negative deflection Positive deflection
Clockwise
epic Burano yard 15-05-2017
33 33 Measured in 1/100 mm
-30
-20
-10
0
10
20
301 2 3 4 5 6 aft
De
fle
ctio
n
Crank
Crankshaft deflection
Vertical deflection
Horizontaldeflection
Tolerance vertical
Tolerancehorizontal
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
17
Deflection after alignment 27-07-17
After realignment of IB we are satisfied
Munkholm Consult A/S Crankshaft DeflectionCostumer xx Hours Ship Measured by Date
Engine 6S35mc-6 Temp bot Temp top
CFM Deflection Tolerance vert ical Tolerance horizontal
Crank A B C D E Vert ical def lect ion Horizont al def lect ion M ax M in M ax M in
1 0 0 0 24 -24 24 -24
2 0 0 0 24 -24 24 -24
3 0 0 0 24 -24 24 -24
4 0 1 -3 -2 -5 -0,5 -3 24 -24 24 -24
5 0 2 1 -3 -5 3,5 -5 24 -24 24 -24
6 aft 0 5 7 2 -2 8 -3 24 -24 24 -24
A B C D E
Negative deflection Positive deflection
Clockwise
epic Burano crew 27-07-2017
33 33 Measured in 1/100 mm
-30
-20
-10
0
10
20
301 2 3 4 5 6 aft
De
fle
cti
on
Crank
Crankshaft deflection
Vertical deflection
Horizontaldeflection
Tolerance vertical
Tolerancehorizontal
Munkholm Consult A/S 29-07-2017
Epic Gas Turkey/Istanbul
Munkholm Consult A/S Mob CM : 0045 60152480 Myhlenbergvej 62 Office : 0045 98571234
9510 Arden E-mail Christian Munkholm
Denmark cm@munkholmconsult.dk
WEB: munkholmconsult.dk cmmunkholmconsult@hotmail.com
18
Deflection after repair 29-07-17
We have requested a new deflection done in clockwise.
Munkholm Consult A/S Crankshaft DeflectionCostumer xx Hours Ship Measured by Date
Engine 6S35mc-6 Temp bot Temp top
CFM Deflection Tolerance vert ical Tolerance horizontal
Crank A B C D E Vert ical def lect ion Horizont al def lect ion M ax M in M ax M in
1 3 12 18 6 0 16,5 -6 24 -24 24 -24
2 2 3 -2 -1 0 -3 -4 24 -24 24 -24
3 2 -1 -3 -2 0 -4 -1 24 -24 24 -24
4 4 1 1 -1 0 -1 -2 24 -24 24 -24
5 3 0 -5 -4 0 -6,5 -4 24 -24 24 -24
6 aft -1 -10 -15 -10 0 -14,5 0 24 -24 24 -24
A B C D E
THIS IS MEASURED IN COUNTER CLOCKWISE NOT USEBLE
Negative deflection Positive deflection
Clockwise
epic Burano yard 01-03-2015
33 33 Measured in 1/100 mm
-30
-20
-10
0
10
20
301 2 3 4 5 6 aft
De
fle
cti
on
Crank
Crankshaft deflection
Vertical deflection
Horizontaldeflection
Tolerance vertical
Tolerancehorizontal
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