Section 6 Machinery casings and fuel oil tanks
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 3 Ship Structures (General) - Chapter 6 Machinery Spaces - Section 6 Machinery casings and fuel oil tanks

Section 6 Machinery casings and fuel oil tanks

Parent topic: Chapter 6 Machinery Spaces

6.1 Machinery casings

6.1.1 The scantlings and arrangements of exposed casings protecting machinery openings are to be in accordance with Pt 3, Ch 8, 2 Scantlings of erections.

6.1.2 The minimum scantlings of protected casings are to be in accordance with Table 6.6.1 Protected machinery casings.

Table 6.6.1 Protected machinery casings

Item Minimum scantlings
Plating t = 7s mm or t = 3,5 mm whichever is the greater
Stiffeners Z = 15s + 4 cm3
Symbols
Z, t and s are as defined in Pt 3, Ch 6, 1.3 Symbols and definitions 1.3.1

Note The depth of stiffeners is to be not less than 45 mm.

6.1.3 Where casing stiffeners carry loads from deck transverses, girders, etc. or where they are in line with pillars below, they are to be suitably increased.

6.1.4 Casing bulkheads are to be made gastight and the access doors are to be of a gastight self-closing type.

6.2 Fuel oil tanks

6.2.1 Oil tanks integral with the ship’s structure in the machinery space are generally to comply with the requirements given in Pt 3, Ch 7 Bulkheads.

6.2.2 The scantlings of oil tanks not integral with the ship’s structure are to comply with Pt 5, Ch 12, 4.9 Fresh water piping.

6.2.3 Where a pipe is fitted in the bilge to facilitate the transition between the horizontally oriented bottom plating and the vertically oriented side shell plating and it passes through fuel oil tanks, small stoppers are to be fitted in the pipes to prevent the passage of fuel to adjacent tanks in case of leakage of the pipe. In this case, small plugs for draining and venting purposes of the individual pipe part contiguous to the fuel oil tanks are to be fitted.

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