Influence of different opening conditions on explosion consequence in a LPG transmission pipeline

ABSTRACT

Explosion accident in gas pipeline brings disastrous consequences because of its complex pipeline network with branches. A novel risk assessment methodology is established to quantitatively analyze the influence of different opening conditions on explosion consequence, including the calculation of dynamic changing explosion pressure as independent variable and the risk calculation of probability unit of personal injury and pipeline damage risk as dependent variable. Taking LPG pipeline as research object, the influence analysis results show that the determinacy of probability unit of pipeline damage decreases significantly once the closed pipeline branches open. The maximum decrease of pipeline damage is 77.39% in horizontal branch, due to its easy accumulation and quick release of explosion pressure. While the determinacy of probability unit of personal injury in the outlet area of vertical branch decreases faster after adding water spray. The maximum decrease of eardrum rupture is 6.66% and the maximum decrease of pulmonary hemorrhage is 4.08%. The risk assessment methodology and application results of different opening conditions on personal injury and pipeline damage could assist the optimal layout of industrial gas pipeline.

KEYWORDS:

• Explosion consequence
• opening conditions
• LPG pipeline
• explosion pressure
• influence analysis

Acknowledgments

The authors appreciate the financial support from the Key Research & Development Plan of Changzhou City (No. CE20205051) and the Vice President Project of Science and Technology of Jiangsu Province (No. FZ20211438).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work was supported by the the Vice President Project of Science and Technology of Jiangsu Province [FZ20211438]; the Key Research & Development Plan of Changzhou City [CE20205051].

Notes on contributors

Haipu Bi

HaipuBi, Ph.D, associate professor, mainly engaged in the Investigation, Methodology, Writing- original draft, Writing - review & editing.

Shuyi Shen

Shuyi Shen, master candidate, mainly engaged in the Methodology, Formal analysis.

Kaimin Wang

Kaimin Wang, master candidate, mainly engaged in the Methodology, Review & editing.

Lei Tian

Lei Tian, master candidate, mainly engaged in Review & editing.

Qingqing Zhang

Qingqing Zhang, master candidate, mainly engaged in Review & editing.

Hui Shao

Hui Shao, professor, mainly engaged in the Investigation.