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Welding joint details for bulkhead renewal

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Case study

Cargo hold bulkhead steel renewal at Dung Quat Port

SVC Marine carried out local crop-and-renew steel work on a damaged cargo hold bulkhead at Dung Quat Port.

Case study

Location
Dung Quat port, Vietnam
Work type
Afloat repair, steel renewal
Class
ClassNK
Published
New weld seam on the cargo hold bulkhead
New weld seam on the cargo hold bulkhead
Repair work on a cargo hold bulkhead
Repair work on a cargo hold bulkhead
Welder on scaffolding renewing the cargo hold bulkhead
Welder on scaffolding renewing the cargo hold bulkhead
Cargo hold during bulkhead renewal
Cargo hold during bulkhead renewal
Insert plate fit-up with strongbacks on the bulkhead
Fit-up of the bulkhead insert with strongbacks before welding.
Inspection of the renewed bulkhead in the hold
Checking the repaired area in the cargo hold.
Steel plate lowered into the hold for the bulkhead repair
Lowering the steel plate into the hold for the repair.
Scaffolding and repair crew at the cargo hold bulkhead
Scaffolding and repair crew at the cargo hold bulkhead
Renewed bulkhead stiffener in the hold
Renewed bulkhead stiffener in the hold
Insert plate welded into the hold bulkhead
Welded insert plate in the cargo hold bulkhead.
Welder at the bulkhead insert plate
Welder at the bulkhead insert plate
Bulkhead renewal drawing with weld seams
Bulkhead renewal drawing with weld seams
Plate preparation for the bulkhead repair
Preparing the replacement steel plate for the bulkhead repair.

01

The repair area

The published project records renewal of a damaged cargo hold bulkhead section forming part of a ballast wing tank boundary. The repair involved cropping the damaged steel and fitting a new AH36 insert plate.

02

Onboard execution

SVC Marine's welders, cutter and supervisor carried out the local steel renewal. The repair specification required verification of the welding procedure, welders, steel and consumables by class before starting work.

03

Plate preparation and fit-up

The photographs show plate preparation, lowering the replacement steel into the hold, fit-up with strongbacks and welding around the insert. The drawing records weld-joint details for the bulkhead renewal.

04

Inspection requirements

The stated repair requirements included ultrasonic and vacuum testing of the butt joint, penetrant testing of the fillet weld and final examination by the vessel and ClassNK representatives.

05

Request steel repair

Send the damaged area photographs, hold and frame references, tank boundary details, material grade, plate thickness, class comments and available work window. SVC Marine undertakes steel fabrication, fitting and welding onboard.

Talk to SVC Marine

Please provide your company details and the vessel requirement or work scope. Acceptance is subject to verification and confirmation by SVC Marine.