AS 4822:2018 pdf free.External field joint coatings for steel pipelines.
3.1 APPLICATION PROCEDURE SPECIFICATION (APS)
Prior to start of application and any agreed PQT and/or PPT (see Clauses 3.3 and 3.5), the APS shall be prepared (that is a compilation of documents related to the project-specific control of FJC), including the following:
(a) A list of all PPE and detailed safe working procedures.
(b) A list of tools, testing and inspection equipment, and coating supplies to be used.
(c) Preparation of the steel surface and factory-applied coating, including inspection prior to application (see Clause 4. 1).
(d) Coating and abrasive blasting material properties (see Clauses 3.2 and 4.1.2.2).
(e) Receipt, handling and storage of coating and abrasive blasting materials (see Clauses 3.2 and 4.1.2.2).
(f) Coating application procedure.
(g) Inspection and testing of applied FJC (see Clause 3.6).
(h) Repair and testing of defective FJC.
(i) Marking, traceability and documentation.
The APS shall cover all items associated with quality control as defined in this Standard and any agreed options for the specific FJC system.
The APS shall be approved by the purchaser. The approved APS shall not be changed by the applicator without prior written authorization of the purchaser and all coating work, testing and inspection shall be carried out according to the APS.
The time necessary for the various operations related to surface preparation, heating, coating application and testing shall be defined by the applicator and approved by the purchaser (e.g. during PQT and/or PPT) in order not to delay the pipeline construction operations.
NOTE: The purchaser may specify that the APS be approved prior to the start of production and prior to ally agreed PQT and/or PPT.
3.2 COATING MATERIALS
3.2.1 Information to be supplied
The coating material shall include the following information:
(a) In the case of coatings proposed by the coating applicator company, information that provides evidence of suitability of the proposed coating for the required application.
(b) Production test certificates (batch certificates), as specified in this Standard, for the actual coating material, and any agreed optional requirements.
(c) Conditions for application of the coating materials (field joint and repair of FJC).
(d) Packaging, storage and safety requirements of coating materials. AS 4822 pdf download.