Technical Diagnostics Of Steam Boilers And Vessels Operating Under Pressure (Flaw Detection) With The Issuance Of An Expert Opinion (Technical Report) And The Preparation Of A Defective List For Major Repairs Of The Boiler. Technical Diagnostics Of Steam Boilers And Vessels Operating Under Pressure (Flaw Detection) With The Issuance Of An Expert Opinion (Technical Report) And The Preparation Of A Defective List For Major Repairs Of The Boiler.