M-501 Surface protection and protective coating (2022)

The main changes from edition 6 are an update of the technical content based on experience, new requirements and new international standards.

Advises coatings systems that can meet the high durability range as per ISO 12944-1
Defines the corrosivity categories accounted for as per ISO 12944-2
Includes pre-qualification requirements for coating under insulation and for tank linings
Clarifies the qualification requirements for paint shops and operators
Clarifies the inspection and testing requirements that apply before, during and after coating application
Captures improvements from IOGP doc S-715
Introduces new coating systems to cover cryogenic conditions, high temperature service, powder coating and passive fire protection (PFP) in splash zone

New content

New sections are implemented to cover:

Coating repairs
Quality management and performance assurance
Coating selection tables

New normative annexes are implemented to cover:

Water uptake for PFP
Immersion freeze dry testing for PFP
Fire testing for PFP
Adhesion/cohesion test

New informative annexes are Implemented to cover:

Test panel for Coating Procedure Tests (CPT)
Coating operator qualification test
Overlapping zones
Maintenance coating

New separate CSDS

Test panel for Coating Procedure Tests (CPT)
Coating operator qualification test
Overlapping zones
Maintenance coating

A separate coating system data sheet (CSDS) for each coating system and substrate is developed. This includes new systems related to:

Buried in soil PFP in splash zone
Cryogenic service
High temperature service
Powder coating

A separate coating system data sheet (CSDS) for each coating system and substrate is developed. This includes new systems related to the activities in table 1 (re pre-qualification of systems) and 2 (Inspection and testing requirements) are numbered for easy cross reference in each CSDS.

Each CSDS outlines the relevant operational conditions, applicable substrate material quality, surface preparation requirements, generic coating system build up and the required adhesion testing. In addition, it gives cross references to any pre-qualification requirements and to all test and inspection activities to be carried out.