Cargo Hold Bulkhead Steel Renewal in Vietnam

SVC Marine Services provides cargo hold bulkhead steel renewal, crop and renew steel repair, welding, NDT support, vacuum testing, class-attended repair and onboard ship repair services for vessels calling Vietnamese ports, anchorages and shipyards.

This project page records a cargo hold bulkhead steel renewal job at Dung Quat Port, Vietnam. The cargo hold bulkhead in way of Ballast Wing Tank No.1 Starboard, around frame 128 and approximately 4 metres above the reference area, was found dented and damaged. The damaged section was cropped and renewed with AH36 steel plate.

SVC Marine carried out the repair with marine welders, cutter and supervisor attendance. For steel bulkhead repair, the key points are correct damage marking, safe cutting, steel preparation, qualified welding, NDT, watertight testing and final confirmation by vessel representative and class where required.

Cargo Hold Bulkhead Steel Renewal in Vietnam

Cargo hold bulkhead damage can affect watertight integrity, ballast tank boundary condition, cargo hold safety and class compliance. When a bulkhead plate is dented, cracked, wasted or locally damaged, crop and renew steel repair may be required to restore the structure before the vessel continues normal operation.

SVC Marine provides cargo hold bulkhead steel repair and renewal services for bulk carriers, general cargo vessels, MPP vessels, container vessels and other commercial vessels calling Vietnam.

Project Scope at Dung Quat Port

The project involved steel renewal for a damaged cargo hold bulkhead section at Dung Quat Port. The damaged area was cropped and renewed with a new steel insert plate according to the repair requirement.

Original project details:

• Location: Dung Quat Port, Vietnam
• Damage area: Cargo hold bulkhead in way of Ballast Wing Tank No.1 Starboard
• Frame reference: Around frame 128
• Repair height: Approximately 4 metres up
• Repair type: Crop and renew damaged steel plate
• Renewal plate size: 500 mm × 400 mm
• Thickness: 12 mm
• Material: AH36
• Manpower: 2 welders, 1 cutter and 1 supervisor
• Duration: Approximately 8 hours

 

– WPS, Welders, Material, Welding consumable will be verified by Class prior to start working.

– New  butt joint Welding seam on CH bulkhead will be applied Ultrasonic Test and Vaccum Test.

– Fillet Joint welding seam on water tight bulkhead will be applied Penetration Testing

– Final condition will be confirmed by Vessel’s represent and Class NK ‘s Represent.

Photos reports:

Typical Cargo Hold Bulkhead Repair Scope

The actual repair method depends on damage condition, steel thickness, class requirement, access, tank boundary, cargo hold condition and available working time. A typical cargo hold bulkhead steel renewal job may include:

• Visual inspection of damaged or dented bulkhead area
• Checking repair position against frame, tank and cargo hold reference
• Marking damaged steel area for cropping
• Removing paint, rust, cargo residue or obstruction around the repair area
• Cutting and removing damaged steel plate
• Edge preparation before fitting new steel
• Fabrication and fitting of new AH36 or approved steel insert plate
• Welding by qualified marine welders
• Grinding and finishing after welding
• NDT and watertight testing where required
• Class, surveyor or vessel representative inspection
• Photo records and repair completion report

Class Verification and Welding Control

For class-attended steel repair, the welding procedure, welders, material and welding consumables should be checked before work starts. In this project, WPS, welders, material and welding consumables were subject to class verification before the repair work.

This control is important because bulkhead steel repair is not only cosmetic. The renewed steel section must restore structural and watertight function, especially when the bulkhead forms part of a ballast tank boundary or cargo hold structure.

NDT and Watertight Testing

After welding, inspection and testing may be required depending on the repair location, joint type and class instruction.

For this project, the repair requirement included:

• Ultrasonic testing for new butt joint welding seam on cargo hold bulkhead
• Vacuum testing for the renewed bulkhead repair area
• Penetrant testing for fillet joint welding seam on watertight bulkhead
• Final condition confirmation by vessel representative and Class NK representative

NDT and watertight testing help confirm that the repair area is free from unacceptable defects and that the renewed section is suitable for service according to the applicable repair requirement.

Why Cargo Hold Bulkhead Damage Must Be Repaired Properly

Cargo hold bulkhead damage can create operational and safety risk if ignored. A dented or damaged bulkhead may indicate impact, cargo damage, structural weakness, crack risk or tank boundary concern.

If the damage is in way of a ballast tank, poor repair can lead to leakage, corrosion acceleration, class comments, port state comments, cargo contamination risk or delay during future survey. Proper crop and renew repair is often the cleanest solution when the damaged plate cannot be accepted by class or superintendent.

Steel Repair Team and Onboard Execution

SVC Marine performs steel repair work with marine welders, cutters, repair workers, supervisors and technical attendants. For onboard cargo hold repair, work planning must consider access, lighting, ventilation, cargo residue, fire watch, hot work permission, tank boundary condition and class inspection timing.

Our steel repair work may cover:

• Cargo hold bulkhead steel renewal
• Ballast tank boundary repair
• Side shell and bottom shell steel repair
• Tank top steel renewal
• Deck plate repair
• Frame, bracket and stiffener repair
• Local insert plate repair
• Steel fabrication and onboard fitting
• Welding, grinding and finishing works
• NDT and testing support after completion

Safety Requirements for Bulkhead Steel Repair

Cargo hold bulkhead repair may involve cutting, grinding, welding, working at height, hot work, confined or semi-confined space risk and possible tank-boundary hazards. Before work starts, the vessel and repair team should check access, staging, lighting, ventilation, fire watch, gas-free condition where required, nearby tank condition and hot work permission.

When the repair area is in way of a ballast tank, fuel tank, void space or any enclosed compartment, the internal condition must be checked before cutting or welding. Safe isolation and fire prevention are critical.

Service Coverage in Vietnam

SVC Marine provides steel repair, cargo hold repair, pipe repair, welding work and class-attended ship repair services at selected Vietnamese ports, shipyards and anchorages.

Service coverage may include Dung Quat, Da Nang, Chan May, Quy Nhon, Vung Ang, Son Duong, Hon La, Cua Lo, Nghi Son, Hai Phong, Hon Gai, Cam Pha, Cai Lan, Vung Tau, Phu My, Cai Mep, Ho Chi Minh City area, Long An, Vinh Tan and other selected locations in Vietnam.

Information Required for Steel Repair Quotation

To quote cargo hold bulkhead steel renewal or onboard steel repair in Vietnam, please provide:

• Vessel name and IMO number
• Vessel type and current location
• Port, anchorage or shipyard
• ETA, ETB, ETD and available repair window
• Photos and videos of damaged steel area
• Damage location: hold number, frame number, tank reference or structural reference
• Estimated renewal size and plate thickness
• Required material grade if known
• Repair sketch, class comment or superintendent instruction if available
• Required NDT or watertight test method
• Whether class, flag, surveyor or owner’s representative attendance is required

Related Marine Services

• Ship Repair and Supply in Vietnam
• Drydock Services in Vietnam
• Ship Management and Technical Coordination
• Ship Sale and Purchase Support
• SVC Marine Services

Related Technical Articles

• Steel and Pipe Repair for Vessels in Vietnam
• Cell Guide Renewal for Container Vessel in Vietnam
• Keel Steel Renewal After Grounding Damage
• Renewal Steel Keel Plate in Dry-dock
• Cargo Hold Hydraulic Pump Repair at Vissai Port

Frequently Asked Questions

Does SVC Marine provide cargo hold bulkhead steel renewal in Vietnam?

Yes. SVC Marine provides cargo hold bulkhead steel renewal, crop and renew steel repair, welding, NDT support, vacuum testing and class-attended ship repair in Vietnam.

When is cargo hold bulkhead steel renewal required?

Steel renewal may be required when the bulkhead plate is dented, cracked, wasted, holed, rejected by class, or damaged by cargo impact or structural stress.

What tests may be required after bulkhead welding?

Depending on joint type and class requirement, testing may include ultrasonic testing, vacuum testing, penetrant testing, hose testing or other NDT and watertight confirmation methods.

Can SVC Marine provide welders and cutters for onboard steel repair?

Yes. SVC Marine provides marine welders, cutters, repair workers, supervisors and technical attendants for onboard and drydock steel repair jobs in Vietnam.

What information is needed for a steel repair enquiry?

The owner or manager should provide vessel name, IMO number, port, ETA, damage photos, repair location, estimated steel size, thickness, material grade, class requirement and available working window.

Contact SVC Marine

For cargo hold bulkhead steel renewal, crop and renew steel repair, welding, NDT, vacuum testing or class-attended ship repair in Vietnam, please send vessel details, ETA, port, photos, repair sketch and required scope to SVC Marine.

SVC Marine Services
Ship Repair / Steel Renewal Enquiries: shiprepair@svcmarine.com
Drydock Enquiries: drydock@svcmarine.com
General Enquiries: info@svcmarine.com
Website: www.svcmarine.com