Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly

At a brewery, the base plate-to-shell weld seam of a 90-m3 vertical cylindrical steel tank failed catastrophically. The 4 ton tank “took off” like a rocket leaving its contents behind, and landed on a van, crushing it. The top of the tank reached a height of 30 m. The internal overpressure responsib...

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Main Authors: Frank H. Hedlund, Robert S. Selig, Eva K. Kragh
Format: Article
Language:English
Published: Elsevier 2016-06-01
Series:Safety and Health at Work
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2093791115001080
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author Frank H. Hedlund
Robert S. Selig
Eva K. Kragh
author_facet Frank H. Hedlund
Robert S. Selig
Eva K. Kragh
author_sort Frank H. Hedlund
collection DOAJ
description At a brewery, the base plate-to-shell weld seam of a 90-m3 vertical cylindrical steel tank failed catastrophically. The 4 ton tank “took off” like a rocket leaving its contents behind, and landed on a van, crushing it. The top of the tank reached a height of 30 m. The internal overpressure responsible for the failure was an estimated 60 kPa. A rupture disc rated at < 50 kPa provided overpressure protection and thus prevented the tank from being covered by the European Pressure Equipment Directive. This safeguard failed and it was later discovered that the rupture disc had been installed upside down. The organizational root cause of this incident may be a fundamental lack of appreciation of the hazards of large volumes of low-pressure compressed air or gas. A contributing factor may be that the standard piping and instrumentation diagram (P&ID) symbol for a rupture disc may confuse and lead to incorrect installation. Compressed air systems are ubiquitous. The medium is not toxic or flammable. Such systems however, when operated at “slight overpressure” can store a great deal of energy and thus constitute a hazard that ought to be addressed by safety managers.
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spelling doaj.art-dc8470f3abb94049b85cd0bb035040602023-09-02T18:58:10ZengElsevierSafety and Health at Work2093-79112016-06-017213013710.1016/j.shaw.2015.11.004Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed IncorrectlyFrank H. HedlundRobert S. SeligEva K. KraghAt a brewery, the base plate-to-shell weld seam of a 90-m3 vertical cylindrical steel tank failed catastrophically. The 4 ton tank “took off” like a rocket leaving its contents behind, and landed on a van, crushing it. The top of the tank reached a height of 30 m. The internal overpressure responsible for the failure was an estimated 60 kPa. A rupture disc rated at < 50 kPa provided overpressure protection and thus prevented the tank from being covered by the European Pressure Equipment Directive. This safeguard failed and it was later discovered that the rupture disc had been installed upside down. The organizational root cause of this incident may be a fundamental lack of appreciation of the hazards of large volumes of low-pressure compressed air or gas. A contributing factor may be that the standard piping and instrumentation diagram (P&ID) symbol for a rupture disc may confuse and lead to incorrect installation. Compressed air systems are ubiquitous. The medium is not toxic or flammable. Such systems however, when operated at “slight overpressure” can store a great deal of energy and thus constitute a hazard that ought to be addressed by safety managers.http://www.sciencedirect.com/science/article/pii/S2093791115001080catastrophic tank failureisentropic exergypressure relief device failure
spellingShingle Frank H. Hedlund
Robert S. Selig
Eva K. Kragh
Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
Safety and Health at Work
catastrophic tank failure
isentropic exergy
pressure relief device failure
title Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
title_full Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
title_fullStr Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
title_full_unstemmed Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
title_short Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
title_sort large steel tank fails and rockets to height of 30 meters rupture disc installed incorrectly
topic catastrophic tank failure
isentropic exergy
pressure relief device failure
url http://www.sciencedirect.com/science/article/pii/S2093791115001080
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