Annex 11 - Guidelines for the Gauging of the Vertically Corrugated Transverse Watertight Bulkhead Between Holds Nos. 1 and 2
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Statutory Documents - IMO Publications and Documents - Resolutions - Assembly - IMO Resolution A.744(18) Guidelines on the Enhanced Programme of Inspections During Surveys for Bulk Carriers and Oil Tankers (Adopted on 4 November 1993) - Annex A - Guidelines on the Enhanced Programme of Inspections During Surveys for Bulk Carriers - Part A - Guidelines on the Enhanced Programme of Inspections During Survey of Bulk Carriers Having Single-side Skin Construction - Annex 11 - Guidelines for the Gauging of the Vertically Corrugated Transverse Watertight Bulkhead Between Holds Nos. 1 and 2

Annex 11 - Guidelines for the Gauging of the Vertically Corrugated Transverse Watertight Bulkhead Between Holds Nos. 1 and 2

  1 Gauging is necessary to determine the general condition of the structure and to define the extent of possible repairs and/or reinforcements of the vertically corrugated transverse watertight bulkhead for verification of the compliance with the Bulk carrier bulkhead and double bottom strength standards, defined in regulation XII/1.5 of the Convention.

  2 Taking into account the buckling model specified in the Bulk carrier bulkhead and double bottom strength standards, defined in regulation XII/1.5 of the Convention, in the evaluation of strength of the bulkhead, it is essential to determine the thickness diminution at the critical levels shown in figures 1 and 2 of this annex.

  3 The gauging should be carried out at the levels as described below. To adequately assess the scantlings of each individual vertical corrugation, each corrugation flange, web, shedder plate and gusset plate within each of the levels given below should be gauged.

  Level (a) Ships without lower stool (see figure 1):

  • Locations:

    • The mid-breadth of the corrugation flanges at approximately 200 mm above the line of shedder plates;
    • The middle of gusset plates between corrugation flanges, where fitted;
    • The middle of the shedder plates;
    • The mid-breadth of the corrugation webs at approximately 200 mm above the line of shedder plates.

  Level (b) Ships with lower stool (see figure 2):

  • Locations:

    • The mid-breadth of the corrugation flanges at approximately 200 mm above the line of shedder plates;
    • The middle of gusset plates between corrugation flanges, where fitted;
    • The middle of the shedder plates;
    • The mid-breadth of the corrugation webs at approximately 200 mm above the line of shedder plates.

  Level (c) Ships with or without lower stool (see figures 1 and 2):

  • Locations:

    • The mid-breadth of the corrugation flanges and webs at about the mid-height of the corrugation.

  4 Where the thickness changes within the horizontal levels, the thinner plate should be gauged.

  5 Steel renewal and/or reinforcement should comply with the Bulk carrier bulkhead and double bottom strength standards, defined in regulation XII/1.5 of the Convention.

Figure 1

Figure 2


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