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HATCH COVER REPAIR IN VIET NAM

HATCH COVER REPAIR

It is generally accepted that leaking hatch covers are a principal cause of cargo wetting.Hatches leak for a variety of reasons, but mainly because of poor maintenance or failure to close them properly. Leaking or badly maintained hatch covers can lead to more serious consequences than wet cargo – flooding, accelerated corrosion or even loss of the ship.

A weathertight cover, is a cover designed to prevent the passage of water into the ship in any sea condition. Hatch covers are constructed to be weathertight, which means that, in any transient condition, water will not penetrate into the ship through the covers or the double drainage system. However, it is apparent that minor leakage into a cargo hold during a hatch cover test is often erroneously considered to be within a weathertight

HATCH COVER REPAIR IN VIET NAM
HATCH COVER REPAIR IN NOSCO SHIPYARD

HATCH COVER REPAIR IN VIET NAM

HATCH COVER REPAIR IN VIET NAM

The purpose and function of a hatch cover and its coamings is to prevent ingress of water into a cargo hold after a large opening has been cut in the deck for cargo access. Hatch covers are a moveable structure designed to a weathertight standard.

Typically hatch covers are lightweight steel grillages. Modern design methods using finite element technology enable more efficient material distribution which results in lighter (thinner) structures.
Construction from high tensile steel results in even thinner plate being used. For this reason these lightweight structures must be ‘handled with care’. Prevention of corrosion is essential – safety
margins are finite.

HATCH COVER REPAIR IN VIET NAM
HATCH COVER REPAIR IN VIET NAM

HATCH COVER REPAIR IN VIET NAM

NOTES WITH THE HATCH COVER

Carry out regular examination of the hatch covers, hatch beams and coamings to identify:

  • General levels of corrosion (check with your classification society for corrosion allowances);

  • Localised corrosion at welded connections (grooving);

  • Cracks in joints and weld metal;

  • Permanent distortion of plating and stiffeners;

  • Indications of excessive corrosion e.g. holes or local buckling of the top plate;

  • Cracks in main structural joints;

  • Replace missing or damaged hatch gaskets (rubber packing) immediately. The minimum length of replaced gasket should be one metre;

  • Keep hatch coaming tops clean and the double drainage channels free of obstructions. (Open hatch covers to clean coaming tops and the double drainage channels after loading bulk cargo

    through grain or cement ports);

  • Keep cleats and wedges in serviceable condition and correctly adjusted;

  • Test hydraulic oil regularly for contamination and deterioration;

  • Keep hydraulic systems oiltight;

  • Clean up oil spills. If the leak cannot be stopped immediately, construct a save-all to contain the oil and empty it regularly;

  • Remember that continuing and regular maintenance of hatches is more effective and less expensive than sporadic inspection and major repair.

HATCH COVER REPAIR IN VIET NAM HATCH COVER REPAIR IN VIET NAM

HATCH COVER REPAIR IN NOSCO SHIPYARD

HATCH COVER REPAIR IN VIET NAM HATCH COVER REPAIR IN VIET NAM

In field of Marine and Ship repair In Vietnam Hai Ha M&S will bring you the best service and best price with highest quality and 24/7 available  . Our services:

HAI HA MARINE & SHIP REPAIR SERVICE Co.Ltd

Office: 44/82 – Vu Chi Thang Str, Hai Phong city – Viet Nam

Hotline 1 : +84 388-441-654

Hotline 2 : +84 886-441-654

Email: Technical@haihashiprepair.com

Email: info@haihashiprepair.com

Website: http://haihashiprepair.com

Please fill free to contact us as following address for any kind of marine and repairs service for your good vessel in Vietnam.

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