7.2 Extent of overall and close-up surveys
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Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.94(46) - Condition Assessment Scheme - (adopted on 27 April 2001) - Annex - Condition Assessment Scheme - 7 CAS Survey Requirements - 7.2 Extent of overall and close-up surveys

7.2 Extent of overall and close-up surveys

Parent topic: 7 CAS Survey Requirements

7.2.1 Overall survey

 An overall survey of all spaces set out in 5.2 shall be carried out at the CAS survey.

7.2.2 Close-up survey

 The requirements for close-up surveys at the CAS survey are set out in the table below.

Close up Survey Requirements
All web frame rings, in all ballast tanks (see note 1)
All web frame rings, in a cargo wing tank (see note 1)
A minimum of 30% of all web frame rings, in each remaining cargo wing tank (see note 1 and 3)
All transverse bulkheads, in all cargo and ballast tanks (see note 2)
A minimum of 30% of deck and bottom transverses including adjacent structural members, in each cargo centre tank (see note 3)
Additional complete transverse web frame rings or deck and bottom transverse including adjacent structural members as considered necessary by the attending surveyor

Notes:

1 Complete transverse web frame ring including adjacent structural members.

2 Complete transverse bulkhead, including girder and stiffener systems and adjacent members.

3 The 30% shall be rounded up to the next whole integer.

  7.2.3 The attending surveyors may extend the scope of the close-up survey as considered necessary, taking into account the Survey Plan, the condition of the spaces under survey, the condition of the corrosion prevention system and also the following:

  • .1 any information that may be available on Critical Structural Areas;

  • .2 tanks which have structures with reduced scantlings in association with a corrosion prevention system approved by the RO.

  7.2.4 For areas in tanks where coatings are found to be in GOOD condition, the extent of close-up surveys according to 7.2.2 may be specially considered by the RO. However, sufficient close-up surveys shall be carried out, in all cases, to confirm the actual average condition of the structure and to note the maximum observed diminution of the structure.

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