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Case study
Container cell guide renewal at Nghi Son Terminal
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SVC Marine undertakes container cell guide renewal at Nghi Son Terminal, Vietnam. Our steel workers and welders inspect the affected guide, prepare replacement sections and carry out the appointed fitting and welding work.
Cell guides direct containers into position during loading and discharging. This Nghi Son project record concerns cell guide renewal; the worklist below describes the repair, inspection and records SVC undertakes for an appointed job, with the terminal schedule and hold access established for that vessel.
01
Measure the guide and locate the damage
Bent, cracked or wasted guides need their location and dimensions recorded before replacement steel is prepared. Give the hold and bay position, photographs and the length of each affected section so the worklist identifies the actual repair area.
Record the hold, bay and guide position, the damaged length and the condition of adjoining steel. Inspect bends, cracks, wastage, deformation and container-impact damage before determining the crop boundaries. Measurements and photographs must identify the affected guide rather than leaving the welder to infer the location from a general hold view.
For a new enquiry, provide the available drawing, guide section dimensions and steel specification. Where information is missing, identify the inspection and measurement needed before the replacement sections and quantities can be fixed. The repair method depends on the measured damage, surrounding structure and access.
02
Why alignment and guide condition matter
Cell guides help keep containers aligned inside the hold. A bent or misaligned guide can slow loading and discharging, jam a container or increase the risk of cargo damage and structural deformation. Poor guide condition also creates safety exposure for crew, stevedores and terminal personnel working around the affected hold.
Repeated handling problems can lead to class or port-state comments, charterer complaints, delay and off-hire exposure. For an older container vessel, inspect guide condition during drydock, pre-purchase inspection, repair planning or cargo-damage investigation. The observed condition and applicable instructions determine whether local repair or renewal is required before further cargo work.
03
Typical repair and renewal sequence
Our steel workers and welders execute the appointed worklist. A new cell guide job can include the following stages, with access, welding and inspection requirements agreed for the actual damaged sections:
- Inspect the damaged, bent or wasted guides and adjoining structure.
- Mark and measure the sections selected for repair or renewal.
- Cut and remove the agreed damaged cell guide parts.
- Fabricate or prepare the replacement steel sections.
- Fit the replacements and check their required alignment.
- Weld the fitted sections through the appointed work by qualified welders.
- Grind and finish the welded areas where required.
- Carry out the specified dye penetrant testing after welding where commissioned.
- Retain photographs and a repair completion report for the work performed.
- Present the agreed work and records to the master, chief officer, superintendent and any attending class representative or Surveyor as required.
04
Fitting, welding and alignment
Our team cuts out the agreed damaged sections, prepares the steel and fits the replacements to the required alignment. The job plan defines weld inspection and dye-penetrant testing where commissioned, with photographs and work records for the superintendent.
The fitted guide must follow the required position and alignment for container handling. Check the replacement against the repair drawing and sound adjoining guide before the next stage. The worklist should make clear which measurements are checked and who witnesses them, rather than treating a completed weld as proof of correct guide alignment.
Our welders undertake the specified welding and finishing work. Identify any required inspection before the repair area is coated or handed back. The completion record states the sections renewed, the measurements or inspection findings recorded and any work still outstanding.
05
Dye penetrant testing and weld records
Dye penetrant testing examines surface-breaking defects in the tested weld area. It can be specified where cracking, weld defects or structural-integrity concerns require further repair quality checks. The owner requirements, class instructions or superintendent decision determine the test scope and inspection stage for the actual job.
SVC carries out the commissioned repair inspection and specified testing, then prepares the agreed records. Record the area tested, the method, findings and any remedial work against the repair item. Alignment checks and weld testing answer different questions and should be documented separately.
For each commissioned repair, the applicable technical requirements and attending parties determine the acceptance and handover records.
06
Cargo access and safe hot work
Repair teams can attend during a port stay where the vessel schedule, terminal permission, cargo-operation condition and repair scope allow. Establish when the damaged guide and surrounding hold area can be handed over safely. Container handling and repair work need clearly defined access windows for the affected position.
Agree safe access, staging or other working access, lighting, welding equipment and material handling for the hold. Confirm the worksite hot-work arrangements and the protection and isolation needed for the appointed cutting, grinding and welding. Restrictions from the vessel and terminal determine which tasks can be completed during that call.
Poor measurements, unsafe access, unclear work boundaries and changes to the cargo window can cause rework or delayed completion. Identify these constraints before mobilising the steel workers, welders and equipment. If the selected work cannot be completed safely in the available window, establish the appropriate next working arrangement instead of promising completion during every port stay.
07
Technical attendance and repair records
For an appointed technical-attendance or owner-representative role, SVC inspects the work onboard and reports to the superintendent or owner. Keep that inspection mandate clear alongside the steel work performed by our repair workers and welders. The scope can include:
- Inspect repair feasibility against the planned vessel arrival and available work window.
- Review photographs, damage details and the required repair worklist.
- Mobilise SVC steel workers, welders and equipment for the agreed access arrangements.
- Agree the work area, schedule and inspection points with the master, chief officer, agent, terminal and superintendent.
- Inspect onboard progress against the agreed repair items.
- Check repair quality, specified dye penetrant testing and completion records.
- Review the appointed repair quotations, invoices, photographs and service report against the work performed.
08
Vessels and repair-planning situations
Cell guide repair enquiries can concern the following vessel types and work-planning situations. The actual fitted guides and damage determine the repair scope:
- Container vessels.
- Feeder container vessels.
- Multipurpose (MPP) vessels fitted for container carriage.
- General cargo vessels carrying containers.
- Older vessels needing cell guide repair before continued trading.
- Vessels preparing for drydock, class survey or pre-purchase inspection.
09
Nghi Son and related port enquiries
Send the terminal, ETA, cargo-access window, damage sketch and inspection requirements to SVC’s repair department. See Nghi Son ship repair and steel renewal in Vietnam. For calls at Hai Phong or Cai Mep, identify the terminal and guide positions in the same way.
Coverage enquiries also include Lach Huyen, the Ho Chi Minh City area, Da Nang, Dung Quat, Quy Nhon and Vung Tau, alongside Nghi Son, Hai Phong, Cai Mep and other selected Vietnamese ports or shipyards. State the actual terminal, hold access and available repair period; manpower, equipment, port permission and cargo restrictions determine the attendance plan.
For related calls, use Nghi Son ship repair, Hai Phong ship repair and Cai Mep ship repair. Each terminal enquiry needs its own measurements, hold access and work window.
10
What to send for the repair quotation
Send the port and terminal, ETA, photographs, damaged hold and bay positions, guide section dimensions, estimated steel quantity and any repair sketch or drawing. Include access conditions, the cargo window and the owner, class or Surveyor inspection requirements. Provide vessel particulars privately through SVC’s repair department.
The quotation should identify cutting and removal, fabrication or replacement steel preparation, fitting and alignment, welding, finishing, specified testing and completion records within the appointed scope. State who provides access and material handling and who witnesses the inspections. Flag missing measurements or drawings before steel preparation, rather than treating an estimated quantity as an agreed renewal area.
11
Frequently asked questions
Does SVC Marine provide cell guide renewal for container vessels in Vietnam?
Yes. SVC Marine repairs and renews container cell guides at Nghi Son and other appointed Vietnamese locations. Our steel workers and welders undertake the agreed cutting, steel preparation, fitting, welding and alignment work, with specified dye penetrant testing and completion reporting where commissioned. The worklist defines the damaged positions, access window and inspection requirements for the job.
When should a container vessel renew damaged cell guides?
Consider repair or renewal when a guide is bent, cracked, wasted, misaligned or damaged by container impact, particularly where containers jam or loading and discharging become difficult. Inspect the affected guide, its dimensions and adjoining structure so the worklist addresses the actual damage and safe cargo-operation requirements.
Can cell guide repair be arranged during port stay?
Selected work can be performed during a port stay when port permission, hold access, cargo-operation conditions and the vessel schedule allow. Identify when the affected position can be handed over and how long it remains available. SVC plans the workers, replacement steel, equipment, inspection stages and records against that actual working window.
Is dye penetration testing required after cell guide welding?
It may be specified or recommended to examine surface-breaking weld defects under the owner requirements, class instructions or superintendent decision. The agreed job worklist identifies the tested area, inspection stage and required records. Dye penetrant testing and guide alignment checks are documented separately; the report identifies the inspected areas and findings for that repair.
What information is needed to quote a cell guide repair job?
Provide the port and terminal, ETA, photographs, damage location, guide measurements or drawings, estimated steel quantity, access conditions, available working window and any class or Surveyor requirements. State the hold and bay positions and the required inspection records. Send vessel particulars privately with the worklist to SVC’s repair department.
Technical guides for this work
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