On the ship there are also corrosion as well as any human being should have a general check-up to ensure that necessary condition. becauses thickness measurement and corrosion tolerance for road-worthy.
Construction plate thickness should be checked with the measurements and to determine whether the value specified in the regulations taking into account the full
construction tolerances allowed. Measurements by a third party who is authorized BKI.
Regarding the scope of measures to reform the class II and on the plate thickness is measured from the main stomach (lengthwise and crosswise) is important, the number of measurements tailored treatment conditions and appropriate assessment of ship surveyors. The minimum requirements tailored to the age of the ship and tables each thickness measurement to determine the general corrosion rate should be implemented. So is the measurement of the ballast tank.
Whereas for corrosion and wear tolerance, if the results of thickness measurement below the tolerance value, stated value used as the handle value. Modulus reduction container ship was allowed a maximum 10% reduction in surface area of the thick plate and the plate blade profile the maximum allowed. Quoting local thickness reduction allowed is 0.21. In the ballast tanks with the weather as the weather deck of the tank deck.
Friday, January 1, 2010
TOLERANCE corrosion on ships
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Breakdown Inspection of Material during Yacht repair Inspection.
There are different types of materials used in structures and how structures are put together to resist the forces. All of the above has been based on the supposition that the materials remain and function in accordance with their normal properties. However, in practice all materials are subject to degradation over time from a variety of different sources. some examples of materials used for yachts noted in their several years of experience by constellation marine inspectors are as under:-
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Wood and dhows Repair Inspection
Timber that has been well seasoned and that is kept in a uniform state of moisture (neither too wet nor too dry) when properly ventilated will remain stable and with no significant degradation for many hundreds of years. However, as a naturally occurring material, wood has naturally occurring enemies which come in the form of fungus (mould), worms and beetles which need to be inspected carefully.
Common Rot noticed by constellation marine surveyors during detailed Yacht/Boat condition inspection and surveys.
This is manifested by the presence of external yellow spots on the ends of the timber and is often accompanied by yellowish dust especially where the pieces of timber are in contact. The main cause is poor ventilation of the timber.
What is Wet Rot and how significant is it to be noticed during Yacht repair inspection?
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