Hull Lifecycle Programme Intertanko Annual Meeting

2008-04-21

Hull Lifecycle ProgrammeIntertanko Annual Meeting

Dr. Pierre C. Sames, Head of Strategic Research and Development

2008-04-21Hull Lifecycle Programme No. 2

Hull condition monitoring

Requirements come fromflag states and classification• IMO requirements (ESP, PSPC)• IACS requirementscargo owners• CAP surveys, TMSAship owners• Optimizing hull maintenance

Thickness measurements andvisual inspections are the tools.


The goals of the GL Hull Lifecycle Programme (HLP)• Life-long access to all information

on hull condition

• Fast overview and clear communication through 3D visualization

• First class support for planning and assessment of hull inspections

• Avoid costly repairs through timely maintenance


• Measurements typically take several days

• Approx. same time needed for reporting as for measurement

• Highly manual process

• Frequent copying of data

• Difficult to visualize findings

• No electronic assessment support (except Excel tables)

Thickness Measurements (TM) today


Measurement PreparationStructural Modelling

Data Collection

Visualisation, Assessment &

Report Generation

Assessment of thickness measurementswith GL Pegasus

StrengthAssessment

TM Company

Ship Owner

GL


TM companies work more efficiently

Generate printouts for use on board Create sequence(s) of

points in GL Pegasus

Take the readings and mark locations and order on printouts

connect UTM Gauge and download results to GL Pegasus Visualise and print

the results...

• measurement values are transferred automatically

• locations are only entered once

no redundant data input


1-2 weeks1-2 weeksmeasurementsmeasurements

up to 4 weeksup to 4 weeksfor final reportingfor final reporting

Ship out of drydockShip out of drydockShip in drydockShip in drydock

The standard process class renewalclass renewal

Thickness measurement process is acceleratedwith GL Pegasus

upda

te o

f up

date

of

mod

elm

odel

model creationmodel creation1-2 weeks1-2 weeks

measurementsmeasurements final

fin

al

repo

rting

repo

rting

Ship out of drydockShip out of drydockShip in drydockShip in drydock

The process with GL Pegasus class renewalclass renewal

The target: report finished, before ship leaves dry dock


Visualisation/Assessment of Results

• Easy identification of hotspots:S: substantial corrosion (yellow)I: substantial corrosion, to be investigated

whether locally limited (orange)R: has to be renewed (red)

• Results can be visualised in both 2D and 3D

clear view of inspection results: avoid misinterpretation of results better communication with repair

yards


Avoid unnecessary repairs through assessment of longitudinal strength

• Today, measured thickness is compared to maximal diminutions in Excel tables

• Repairs can be avoided in cases when longitudinal and local strength is still sufficient

with class notation HLP, systematic recalculation of stress distribution etc. is done to avoid unnecessary repairs


TM Case Study, July 2006

Measurement campaign Paradise N• Ore Carrier, Reederei F. Laeisz, Rostock

• Length 321 m, breadth 58 m, deadweight 322000 t

• On voyage from Taranto (southern Italy) to Rio de Janeiro

• N&P Maritime- und Industrietechnik GmbH

• 14 days on voyage in ballast condition

• class renewal partheld

• Scope: ballast tanks, cargo spaces, main deck, coaming, hatch covers


Measurement with GL Pegasus

• Definition of measurement sequences within Pegasus according to planned fill levels of ballast tanks

TM Case Study


Transfer of results• Done at end of day

• Transfer of measurement data from UTM device to laptop running GL Pegasus

• Checking results using 2D and 3D graphics

• Attach photos if requried

TM Case Study


End of voyage

• Generation of print report including graphics

• Hatch covers, aft- and forepeak measurements have been reported conventionally (manual tables and sketches, combined in final report)

• Issuance of survey statement referring to TM report

TM Case Study


Summary

• Measurement procedure itself remains the same

• Combined approach poses no problem (conventional tables are also included in GL Pegasus)

• System can be used on voyage as well as in yard

TM Case Study


The scope of HLP• Initial creation and regular

updates of a 3D ship model

• GL Pegasus driven Thickness Measurements

• Direct Access to TM results via fleet-online

• GL Pegasus Viewer software for data visualisation

• Class notation HLP

• Hull Monitoring based on the 3D ship model

Use HLP starting with newbuilding phase as a tool for the owner / operator to keep track of the ship’s status

avai

labl

e se

rvice

available 12/08


Benefits for Ship Owners and Operators• Easier assessment: graphical overview of thickness measurements

• Faster availability of final report

• Higher quality of data, no redundant data input

• Avoid unnecessary repairs through fast re-assessment of longitudinal and local strength

• Use the 3D Model throughout the whole vessel’s lifecycle for

• chronological comparison of surveys,

• easy comparison between sister ships

• Easier communication using graphics (for crew, repair yards, ...)

• Clearly document structural condition for administrative bodies, potential buyers, etc.


[email protected]

Thank you for your kind attention!

"The GL Pegasus software produced and developed by GL will provide a professional standard that the industry will rely on for making critical decisions. In addition, the software is easy to use.„ M. Stevenson, President, Ultrasonics and Magnetics Corporation, New Orleans

Documents

Hull Lifecycle Programme Intertanko Annual Meeting