The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform
Eva K. Kragh - One of the best experts on this subject based on the ideXlab platform.
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large steel tank fails and rockets to height of 30 meters Rupture Disc installed incorrectly
Safety and health at work, 2016Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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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Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
Safety and health at work, 2015Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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
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Large Steel Tank Fails and Rockets to Height of 30 meters - Rupture Disc Installed Incorrectly.
Safety and health at work, 2015Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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
Frank Huess Hedlund - One of the best experts on this subject based on the ideXlab platform.
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large steel tank fails and rockets to height of 30 meters Rupture Disc installed incorrectly
Safety and health at work, 2016Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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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Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
Safety and health at work, 2015Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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
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Large Steel Tank Fails and Rockets to Height of 30 meters - Rupture Disc Installed Incorrectly.
Safety and health at work, 2015Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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
Robert Simon Selig - One of the best experts on this subject based on the ideXlab platform.
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large steel tank fails and rockets to height of 30 meters Rupture Disc installed incorrectly
Safety and health at work, 2016Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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.
-
Large Steel Tank Fails and Rockets to Height of 30 meters − Rupture Disc Installed Incorrectly
Safety and health at work, 2015Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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
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Large Steel Tank Fails and Rockets to Height of 30 meters - Rupture Disc Installed Incorrectly.
Safety and health at work, 2015Co-Authors: Frank Huess Hedlund, Robert Simon Selig, Eva K. KraghAbstract: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
V. S. Raghunathan - One of the best experts on this subject based on the ideXlab platform.
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Microstructure and deformation mode of a stainless steel Rupture Disc exposed to sodium–water reaction
Materials Characterization, 2008Co-Authors: C. Sudha, P. Parameswaran, S. Kishore, C. Meikanda Murthy, M. Rajan, M. Vijayalakshmi, V. S. RaghunathanAbstract:Abstract This paper deals with microstructural studies carried out on an austenitic stainless steel Rupture Disc which was exposed to sodium–water reaction. The Rupture Disc was part of a leak simulator put in a micro leak test section which was used to study the ‘self wastage’ of steam generator tubes. During micro leak testing, the Rupture Disc failed exhibiting a linear crack at a much lower pressure of 10 MPa rather than bursting open at the higher designed pressure of 15 MPa. The failed Rupture Disc revealed different microstructural features on the inner (steam exposed) and outer (sodium exposed) surfaces. Using microstructure as the signature, the temperature experienced by the Rupture Disc was predicted as ≥ 1273 K. Evidence for the exposure of the Rupture Disc to highly exothermic sodium–water reaction was obtained in the form of sodium rich debris, microcracks and deformation bands. Detailed transmission electron microscopy revealed the nature of deformation bands as deformation twins which is not a preferred failure mode for austenitic stainless steels.
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microstructure and deformation mode of a stainless steel Rupture Disc exposed to sodium water reaction
Materials Characterization, 2008Co-Authors: C. Sudha, P. Parameswaran, S. Kishore, M. Rajan, M. Vijayalakshmi, Meikanda C Murthy, V. S. RaghunathanAbstract:Abstract This paper deals with microstructural studies carried out on an austenitic stainless steel Rupture Disc which was exposed to sodium–water reaction. The Rupture Disc was part of a leak simulator put in a micro leak test section which was used to study the ‘self wastage’ of steam generator tubes. During micro leak testing, the Rupture Disc failed exhibiting a linear crack at a much lower pressure of 10 MPa rather than bursting open at the higher designed pressure of 15 MPa. The failed Rupture Disc revealed different microstructural features on the inner (steam exposed) and outer (sodium exposed) surfaces. Using microstructure as the signature, the temperature experienced by the Rupture Disc was predicted as ≥ 1273 K. Evidence for the exposure of the Rupture Disc to highly exothermic sodium–water reaction was obtained in the form of sodium rich debris, microcracks and deformation bands. Detailed transmission electron microscopy revealed the nature of deformation bands as deformation twins which is not a preferred failure mode for austenitic stainless steels.
C. Sudha - One of the best experts on this subject based on the ideXlab platform.
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Microstructure and deformation mode of a stainless steel Rupture Disc exposed to sodium–water reaction
Materials Characterization, 2008Co-Authors: C. Sudha, P. Parameswaran, S. Kishore, C. Meikanda Murthy, M. Rajan, M. Vijayalakshmi, V. S. RaghunathanAbstract:Abstract This paper deals with microstructural studies carried out on an austenitic stainless steel Rupture Disc which was exposed to sodium–water reaction. The Rupture Disc was part of a leak simulator put in a micro leak test section which was used to study the ‘self wastage’ of steam generator tubes. During micro leak testing, the Rupture Disc failed exhibiting a linear crack at a much lower pressure of 10 MPa rather than bursting open at the higher designed pressure of 15 MPa. The failed Rupture Disc revealed different microstructural features on the inner (steam exposed) and outer (sodium exposed) surfaces. Using microstructure as the signature, the temperature experienced by the Rupture Disc was predicted as ≥ 1273 K. Evidence for the exposure of the Rupture Disc to highly exothermic sodium–water reaction was obtained in the form of sodium rich debris, microcracks and deformation bands. Detailed transmission electron microscopy revealed the nature of deformation bands as deformation twins which is not a preferred failure mode for austenitic stainless steels.
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microstructure and deformation mode of a stainless steel Rupture Disc exposed to sodium water reaction
Materials Characterization, 2008Co-Authors: C. Sudha, P. Parameswaran, S. Kishore, M. Rajan, M. Vijayalakshmi, Meikanda C Murthy, V. S. RaghunathanAbstract:Abstract This paper deals with microstructural studies carried out on an austenitic stainless steel Rupture Disc which was exposed to sodium–water reaction. The Rupture Disc was part of a leak simulator put in a micro leak test section which was used to study the ‘self wastage’ of steam generator tubes. During micro leak testing, the Rupture Disc failed exhibiting a linear crack at a much lower pressure of 10 MPa rather than bursting open at the higher designed pressure of 15 MPa. The failed Rupture Disc revealed different microstructural features on the inner (steam exposed) and outer (sodium exposed) surfaces. Using microstructure as the signature, the temperature experienced by the Rupture Disc was predicted as ≥ 1273 K. Evidence for the exposure of the Rupture Disc to highly exothermic sodium–water reaction was obtained in the form of sodium rich debris, microcracks and deformation bands. Detailed transmission electron microscopy revealed the nature of deformation bands as deformation twins which is not a preferred failure mode for austenitic stainless steels.
