Safety Assessment of Long Term Serviced Pressure Vessels: A Case Study of Typical Refining and Chemical Plants in China

2021 ◽  
Author(s):  
Zhiyuan Han ◽  
Guoshan Xie ◽  
Haiyi Jiang ◽  
Xiaowei Li
Keyword(s):  
Pressure Vessel ◽  
Safety Assessment ◽  
Failure Modes ◽  
Pressure Vessels ◽  
Time Dependent ◽  
Chemical Plants ◽  
Safety Specification ◽  
Detailed Assessment

Abstract The safety and risk of the long term serviced pressure vessels, especially which serviced more than 20 years, has become one of the most concerned issues in refining and chemical industry and government safety supervision in China. According to the Chinese pressure vessel safety specification TSG 21-2016 “Supervision Regulation on Safety Technology for Stationary Pressure Vessel”, if necessary, safety assessment should be performed for the pressure vessel which reaches the design service life or exceeds 20 years without a definite design life. However, the safety and risk conditions of most pressure vessels have little changes after long term serviced because their failure modes are time-independent. Thus the key problem is to identify the devices with the time-dependent failure modes and assess them based on the failure modes. This study provided a case study on 16 typical refining and chemical plants including 1870 pressure vessels serviced more than 20 years. The quantitative risk and damage mechanisms were calculated based on API 581, the time-dependent and time-independent failure modes were identified, and the typical pressure vessels were assessed based on API 579. Taking the high pressure hydrogenation plant as an example, this study gave the detailed assessment results and conclusions. The results and suggestions in this study are essential for the safety supervision and extending life of long term serviced pressure vessels in China.

Abatacept concentrations in maternal serum and breast milk during breastfeeding and an infant safety assessment: a case study

Rheumatology ◽  
2019 ◽  
Vol 58 (9) ◽  
pp. 1692-1694 ◽  
Author(s):  
Jumpei Saito ◽  
Naho Yakuwa ◽  
Chinatsu Takai ◽  
Kayoko Kaneko ◽  
Mikako Goto ◽  
...  
Keyword(s):  
Breast Milk ◽  
Safety Assessment ◽  
Maternal Serum ◽  
Infant Safety

scholarly journals Belimumab Concentrations in Maternal Serum and Breast Milk During Breastfeeding and the Safety Assessment of the Infant: A Case Study

2020 ◽  
Vol 15 (7) ◽  
pp. 475-477
Author(s):  
Jumpei Saito ◽  
Naho Yakuwa ◽  
Tatsuo Ishizuka ◽  
Mikako Goto ◽  
Akimasa Yamatani ◽  
...  
Keyword(s):  
Breast Milk ◽  
Safety Assessment ◽  
Maternal Serum

Safety assessment of buried gas pipeline subject to surface explosion: A case study in Wuhan, China

2021 ◽  
Vol 120 ◽  
pp. 105119
Author(s):  
Qichen Tang ◽  
Nan Jiang ◽  
Yingkang Yao ◽  
Chuanbo Zhou ◽  
Xuedong Luo ◽  
...  
Keyword(s):  
Safety Assessment ◽  
Gas Pipeline ◽  
Surface Explosion ◽  
Buried Gas Pipeline

scholarly journals Practical Fire Safety Assessment of Steel-beam Floors Made According to the Old Technologies – an Exemplary Case Study. Influence of the Initial Assumptions on the Final Results of Analyses

2017 ◽  
Author(s):  
Pawel Artur Krol
Keyword(s):  
Fire Resistance ◽  
Structural Design ◽  
Safety Assessment ◽  
Steel Beam ◽  
Practical Applications ◽  
Standard Fire ◽  
The Subject ◽  
Technical Features ◽  
The Eu

The purpose of this article is to present procedures and methodsfor assessing fire resistance of steel-beam floors with thejoists hidden within the thickness of the slab. These technologiesare currently experiencing their renaissance, both in contemporarilydesigned buildings and the existing ones, subjectedto comprehensive redevelopment, refurbishment or modernization.Due to their simplicity and ease of execution, these floorsare just perfect as technology ideal for repairs or alterations ofbuildings under use or in the case of need of complete replacementof existing floors with new ones. These arguments justifythe need to raise the subject of proper safety assessment of thesefloors in relation to the regulations and requirements of lawsapplicable in the EU and pursuant to provisions of the latestcodes for structural design. A significant part of the study consistsof a suggestive computational example, which is a sort ofguide, in which the author, by making detailed step-by-step calculationsproduces a finished pattern of procedure, intended formultiple use. The suggested method of procedure can be successfullyused in the assessment of the fire resistance of floorstructures with similar technical features. The computationalexample presented in the study shows that contrary to a popularbelief, the use of standard fire model does not always leadto conservative estimates. In the article summary, the authorformulates a number of practical applications and conclusions.

Improving Safety Assessment of Complex Systems: An Industrial Case Study

2003 ◽  
pp. 208-222 ◽  
Author(s):  
Marco Bozzano ◽  
Antonella Cavallo ◽  
Massimo Cifaldi ◽  
Laura Valacca ◽  
Adolfo Villafiorita
Keyword(s):  
Complex Systems ◽  
Safety Assessment ◽  
Industrial Case Study

scholarly journals Urban traffic safety assessment: A case study of six Indian cities

2016 ◽  
Vol 39 (2) ◽  
pp. 95-101 ◽  
Author(s):  
Dinesh Mohan ◽  
Geetam Tiwari ◽  
Sudipto Mukherjee
Keyword(s):  
Traffic Safety ◽  
Safety Assessment ◽  
Urban Traffic ◽  
Indian Cities
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