Open AccessComparison and Analysis of Domestic and Foreign Standards for Safety Assessment for In-Service Pressure Vessels Containing Defects-A Case Study of Drum of Utility Boiler
Author(s) -
Min Wang,
Ping Tang,
Zhangwei Ling
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/677/3/032043
Subject(s) - boiler (water heating) , drum , pressure vessel , engineering , forensic engineering , safety standards , service (business) , high pressure , risk analysis (engineering) , reliability engineering , mechanical engineering , business , waste management , engineering physics , marketing
Pressure vessel, a kind of special equipment with high potential explosion danger, will cause catastrophic accident once it explodes or leaks. Ensuring the safe operation of such equipment is of great significance. However, some defects inevitably occur in the process of manufacture, installation and service. Blindly shutdown or repairs will bring huge economic losses. Thus, the safety assessment for in-service pressure vessels containing defects has attracted more and more attention in the industry. The paper analysis the safety assessment for one drum of utility boiler, based on standards of API-579/ASME-2016 Fitness for Service and GB/T19624-2004 Safety Assessment for in-service pressure vessels containing defects. And based on the safety assessment for drum of utility boiler, the difference and advantages of domestic and foreign standards in the aspects of defect characterization, determination of equivalent stress and assessment methods are analyzed and compared. Meanwhile some suggestions for revising the related standards of pressure vessels with defects in China are put forward.