Hull Block Inspection
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Transcript of Hull Block Inspection
Technical Seminar
HULL BLOCK INSPECTIONHULL BLOCK INSPECTION
TUNGLINH
27th Feb, 2012
1.PREPERATION• Standards (acceptance criteria): Yard Quality Standard, IACS Rec.47
• List of WPS, Material Certificates
• Approved Drawing + Letter, Fire divisions (superstructure)
• NDT condition
• QC Inspection Record
2.SAFETY FIRST“Our work is never so urgent or important
that one cannot take time to do it safely.”
CHECK LIST:
• Personal Protective Equipment (PPE)
• Scaffold, ladder, harness
• Ventilation
• Protected opening
3.EXECUSION1. Surveyor equipments
2. Deformation & Straightness
3. Misalignment, Missing of structure
4. Thickness, Material grade
5. Criteria areas
6. Continuous of structure
7. Welding sequence & Welding defects
3.1 Surveyor EquipmentsWeld Gauges
Hammer
Ruler
Taper Gauge
Gap Thickness Feeler Gauge
Caliper
Camera
Light
3.2 Deformation & Straightness IACS Rec.47, Table 6.10, 6.11
3.3 Misalignment
3.4 Material & Thickness Base on Expansion Drawing to define Grade of Material & Thickness of
Plating and Stiffeners
3.5 Criteria Areas Approved Drawing List of criteria areas + NDT areas
Marked defects of QC
High grade material
Curved form plating
WT, OT bulkhead
(prevent leaking of water)
3.5 Criteria Areas Beside that: High stress, high corrosion areas
High stress areas Side shell, Strong member (girder, stringer)
Conner
Toe of brackets
High stress areas
High corrosion areas Ballast tanks PSPC
Stern, Fore of ship
High corrosion areas
High corrosion areas
3.6 Continuous of structure
3.7 Welding sequence & Welding defectsWelding plan
IACS Rec.47
4.REPORT Clearly writing in English (simple and easy to understand)
Save to system (NPS)
Technical Seminar
THANK YOU!THANK YOU!