Interpretation
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1378 – Unified Interpretations of the Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in all Types of Ships and Double-Side Skin Spaces of Bulk Carriers (Resolution MSC.215(82)) – (8 December 2010) - Annex – Unified Interpretations of the Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in all Types of Ships and Double-Side Skin Spaces of Bulk Carriers (Resolution MSC.215(82)) - PSPC 4 – Table 1: 2 PSP (Primary Surface Preparation) - Interpretation

Interpretation

 The conductivity of soluble salts should be measured in accordance with ISO 8502-6 and ISO 8502-9, and compared with the conductivity of 50 mg/m2 NaCI. If the measured conductivity is less than or equal to, then it is acceptable. Minimum readings to be taken should be one (1) per plate in the case of manually applied shop primer. In cases where an automatic process for application of shop primer is used, there should be means to demonstrate compliance with PSPC through a Quality Control System, which should include a monthly test.

Parent topic: PSPC 4 – Table 1: 2 PSP (Primary Surface Preparation)

Procedure for review of quality control of automated shop primer plants

  1 It is recognized that the inspection requirements of PSPC 6.2 may be difficult to apply to an automated shop primer plant and a quality control approach would be a more practical way of enabling compliance with the requirements of PSPC.

  2 As required in PSPC, it is the responsibility of the coating inspector to confirm that the quality control procedures are ensuring compliance with PSPC.

  3 When reviewing the quality control for automated shop primer plants the following procedures should be included:

  • .1 Procedures for management of the blasting grit including measurement of salt and contamination.

  • .2 Procedures recording the following; steel surface temperature, relative humidity, dewpoint.

  • .3 Procedures for controlling or monitoring surface cleanliness, surface profile, oil, grease, dust and other contamination.

  • .4 Procedures for recording/measuring soluble salts.

  • .5 Procedures for verifying thickness and curing of the shop primer conforms to the values specified in the Technical Specification.

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