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Transcript of Chris Thornton Presentation.pdf
7/27/2019 Chris Thornton Presentation.pdf
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argo an
Inspection
Class As ects
London
Cargo Tank Inspection
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Tank Inspection Features, Issues, Risks
Structural
Integrity
on or ng oTank
Coating
Cargo Integri ty
rd
Asphyxiation
Verification
Risk
Waste
Products
(Cleaning)
EnvironmentLife
anagemen
Ener
Trips and
Falls
Explosion useEmissions
(gas freeing)
Cargo Tank Inspection
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Class Survey Schedule – from LR CD live
Cargo Tank Inspection
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Special Survey
• Purpose:
integrity is satisfactory in accordance with the Classification requirements,and will remain fit for its intended purpose for another five year period,subject to proper maintenance and operation of the ship and tocomp e on o per o ca surveys carr e ou a ue a es
• Scope:
Examination all cargo tanks with Close-up inspection as deemednecessary (i.e, depending on condition)
• Close-up inspection:
Implies inspection of items within the close visual range of the
surveyor
Cargo Tank Inspection
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Key Features of Class Surveys
• Independent of inspections carried out by the crew
• Survey (ESP) based on the monitoring of two principal cr iteria:
• The condition of the coating
• The extent of structural corrosion
•
be deteriorating
• Coating in a “ less than good” condition
• Structure found substantially corroded
Cargo Tank Inspection
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Midship section 160K-450K Tanker – Critical
Steel Grades
A + AH
SG 1.025
5. Bracket Toes
.
3. Upper Hopper Knuckle
Full Pen. Weld2. Bracket Toes
1. Lower Hopper
Knuckle.
Tanker Structures Co-Operative Forum
Cargo Tank Inspection
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Cargo Tank Inspection
concentration
possiblebuckling
Cargo Tank Inspection
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•
• Hull Inspection Course
• Distance-learning course• u nspec on s ance
Learning Course on CD-ROM
• Covers
health and safety,inspections, defects and
coatings
• Specific inspection issues for
different types of ships
Cargo Tank Inspection
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Some observations on requirements for inspection
• Desirable to reduce the overall number of inspectors exposed to
• Consider defining scope and purpose of inspections to reducevariability
• Im rove consistenc of ins ections b usin ualified staff
• Scope for Class using crew inspection data is limited ….. by
Cargo Tank Inspection
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Class Cycle for Cargo Tank Inspection
• 5 years: All cargo tanks
• 7.5 years: Cargo tank inspection depends on findings at 5 years
• 10 years: All cargo tanks
• .
• Subsequently every 2.5 years: All cargo tanks
NB: addit ional cargo tank inspections may be required at annual
surveys depending on condition of the tanks
Cargo Tank Inspection
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•
• Hull Inspection, Damage and
Repair Course•
• How to identify different types
of damage and defects using
practical examples and case
studies
• How to understand the
causes of damage and
Cargo Tank Inspection
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•
• Hull Inspection, Damage and
Repair Course• -
• Hull Inspection Distance
Learning Course on CD-ROM
•
Guide• Contents
• How to assess coatin
condition
• Contains sample images
Cargo Tank Inspection