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!