Post on 28-Mar-2015
Ship Machinery and Equipment Maintenance
Lloyds maritime Academy 28/29 Jan 2010
Dr M Raouf Kattan
Managing Director
Safinah Ltd
www.safinah.co.uk
Hull, Tank and ballast tank maintenance
Lloyds maritime Academy 28/29 Feb 2010 © Safinah Ltd 2010
Lloyds maritime Academy 28/29 Feb 2010 Copyright Safinah Ltd 2010
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Coatings
Are they just paint?
or
Are they engineering systems?
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Sign post
Impact of IMO Regulations– Ballast tank issues– Cargo tank issues– Outer hull issues
In service monitoring
Maintenance regimes
Repair regimes
Data collection
Possible issues
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Impact of IMO Regulations
IMO PSPC for dedicated seawater ballast tanks– Has elevated the focus on coating
performance
Fuel prices – Has elevated the focus on outer hull
condition
IMO PSPC for Cargo tanks pendingLloyds maritime Academy 28/29 Feb 2010 © Safinah Ltd 2010
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IMO Regulations
Treaty on Ballast water management systems
IMO Guidelines for Maintenance and Repair (M&R) of ballast tank coatings (void spaces and PMA)
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Ballast tanks
The worst is yet to come– New build CTF requirements– Compatibility with BWMS– Distinction between Maintenance and
Repair– IMO Guidelines for M&R of ballast tank
coatings
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Ballast tanks
As built records required – CTF
In service monitoring by IACS likely to take the following format:
3.4.3 IMO PSPC – In service maintenance, repair and partial
re-coating shall be recorded in the CTF in accordance with the GUIDELINES for coating maintenance and repair
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Maintenance and Repair
Clear Distinction– Maintenance – activity that maintains but
does not improve condition– Repair – activity that improves conditions– Basis is IACS Rec 87.
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Assessment
How to assess condition– Who to do it– How to define areas under consideration– Ambiguities of area of breakdown
How to record
How to audit
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Frequency
Every 5 years all tanks
Fair and Poor – annually
Poor, Fair Good as defined in IMO A.744(18).– Plate: <3% (minor spot rusting), <20%,
>20%– Edges: <20%, 20-50%, >50%
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Good
Photo Courtesy of ClassNK
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Fair
Photo Courtesy of ClassNK
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Poor
Photo Courtesy of ClassNK
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Maintenance Regimes
Need good information– All vessels over 6 years of age inspect all
tanks by crew annually (possibly earlier).– Provide a report of condition– Prepare a maintenance plan– Prepare a repair plan– Record findings and actions in CTF
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Maintenance regime
Prepare– Remove mud, oil, grease etc., Wash down,
Dry, Mech prep. Climate
Apply– Epoxy based, compatible to existing (cross
testing?). DFT to specification!!!
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Repair regimes
At dry-docking or specialist location– Status of riding squads not yet fully clear,
but current reading is that this would be maintenance.
Use of specialised equipment
Prepare a proper plan of action
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Repair regime
Preparation– Remove mud, oil, grease etc. FW wash,
Dry, St2 or Sa2.5 for Fair, Sa2.5 for Poor. Feather coating, soluble salts, climate control.
Application– According to IMO PSPC to required DFT
(compatibility – cross testing!!)
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Data Collection
Newbuild CTF – Contents not yet fully agreed and expect variability (IMO/NACE/IACS proposals).
Crew to keep records in a consistent format for maintenance and for auditing
Keep repair records for auditing
Computer based systems in the near future.
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Possible issues
BWMS compatibility is a big unknown at present, no one making any real claims.
Ownership changes and hence coating supplier changes – compatibility issues
Maintenance logs.
Costs of through life maintenance and repair
Qualification of surveyors/auditorsLloyds maritime Academy 28/29 Feb 2010 © Safinah Ltd 2010
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Possible solutions
Data build up for coating life to allow proper planned maintenance to be developed.
Electronic CTF e.g. Elcoship software
New repair and maintenance strategies - outsourcing
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Outer hull
Direct relationship to fuel consumption
Longer history of owner interest
Computer based tools emerged onto market
Raising need for regular maintenance to save fuel.
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However
Invasive species issues– Require new technology solutions– In water hull cleaning desirable but can
result in invasive species issues.– If not acceptable then need more dry-
docking
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However
Coating technology– 30 years of TBT stability gone– New Tin free products have had variable
performance but has now improved– Foul release coatings, similar experiences – Conditioning coatings require in water hull
cleaning
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Assessment of hull performance
This is a complex process
Software available and services offered.
Daily fuel consumption is probably adequate and a moving average acceptable
May not be as sensitive as computer tools.
Lloyds maritime Academy 28/29 Feb 2010 © Safinah Ltd 2010
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Cargo Oil Tanks
Likely follow a similar pattern to WBT
Draft regulation draws heavily on WBT regulations.
Testing awaiting confirmation
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Future
More inspection and verification– More cost on coatings– More repairs
Need to get better through life data on coating performance
Other regulatory changes may prevent long coating life
Current regulations may inhibit innovation.
Vessel design
Novel maintenance contracts through life
Link new build budget to operational budget
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Projects looking forward
BESST - Process
BEKAS – Edge preparation
Safinah KTP - Design
Equivalent/alternative schemes under IMO PSPC – Japan/Holland/Brazil
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Conclusions
Will need to develop proper maintenance regimes.
Regulatory push will increase through life costs initially
Need to revise how specified
Need records
Need to re-consider design
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Conclusions
Going to get much worse before it gets better.
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Thank you
Any question