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Finally, the materials cover . A welding inspector must be fluent in the language of specifications. The course materials introduce the candidate to key standards such as ISO 5817, ISO 9606, and AWS D1.1. They explain the nuances of Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR). Through flowcharts and checklists within the PDFs, students learn the systematic approach to verifying that a welder is qualified and that the procedure is valid for the application. cswip 3.1 welding inspector course materials pdf