1.2 Guidelines for PMAs that are not part of the structural strength elements
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1279 – Guidelines for Corrosion Protection of Permanent Means of Access Arrangements – (23 May 2008) - Annex – Guidelines for Corrosion Protection of Permanent Means of Access Arrangement - 1 Permanent means of access in dedicated seawater ballast tanks in all types of ships and double-side skin spaces of bulk carriers - 1.2 Guidelines for PMAs that are not part of the structural strength elements

1.2 Guidelines for PMAs that are not part of the structural strength elements

  1.2.1 It is noted that protective coatings of means of access will be liable to suffer from mechanical damage during service. It is also noted that the ladders, rails, walkways, gratings, stanchions, etc., that form the means of access will often be fabricated from square and flat bar sections, the edges of which are an inherent weak point in any coating system, especially where abrasion or mechanical damage is a possibility.

  1.2.2 Therefore, it is suggested that hot dip galvanizing should be employed as the primary means for corrosion protection for these PMAs. Hot dip galvanizing and repairs of damages should be performed in accordance with specifications at least equivalent to those acceptable to the Organizationfootnote.

  1.2.3 The galvanized items should be subsequently coated to specifications at least equivalent to those acceptable to the Organizationfootnote or the coating manufacturer’s recommendation. The type of paint should be selected considering its compatibility requirements with the galvanized surface in accordance with the coating manufacturer’s recommendation.

  1.2.4 Where protective coating is applied as the sole means of corrosion protection for these PMAs, the standard in resolution MSC.215(82) should be applied to the extent possible. In such cases, the protective coating should at least comply with the requirements of the PSPC for the job specification, coating system (epoxy-based system) and total NDFT (320 μm).

  1.2.5 Consideration should be given to section 3.4.3 (In-service maintenance) of the PSPC (resolution MSC.215(82)).

Parent topic: 1 Permanent means of access in dedicated seawater ballast tanks in all types of ships and double-side skin spaces of bulk carriers
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