What is the fine-grained topic of the following text: Be a surface practitioner certified under CSWIP, PCN in ultrasonic testing, magnetic particle or penetrant testing or equivalent approval accepted by the CSWIP In-Service Inspection Management Committee, who has a minimum of three years documented experience in the application of NDT methods related to offshore facilities and to have spent a minimum of 30 days at an offshore work site gaining familiarity with underwater techniques. Only return the topic.
Certification and Experience Requirements for Offshore Non-Destructive Testing (NDT) Practitioners