1. Unclear requirements to conduct gas testing as per PTW procedure 2. Misinterpretation by relevant personnel in the PTW process on the requirements of gas test 3. Lack of discipline by relevant personnel to fully comply with PTW procedure
1. Unclear requirements to conduct gas testing as per PTW procedure2. Misinterpretation by relevant personnel in the PTW process on the requirements of gas test3. Lack of discipline by relevant personnel to fully comply with PTW procedure