Risk Based Approach to Integrity Assessment of a Large Spherical Pressure Vessel
Апстракт
The risk based approach has been applied, in its simplest form, i.e. by using the risk matrix to illustrate how the water proof test can shift risk from high to very high level in the case of large spherical pressure vessel (ammonia storage tank). Having in mind the basic definition of risk, being the product of the probability and consequence, and fixing the consequence at the highest level, only probability of unfavourable event (leakage and/or failure) has been evaluated. Toward this end, the failure assessment diagram (FAD) has been used here as another simple engineering tool to estimate probability of the failure, as the function of the position of the operating point, i.e. defming probability as the ratio between the distance of the operating point from the zero point, and the appropriate distance between the point on the limiting curve and zero point. This simple engineering tool to assess structural integrity showed clearly that water proof test is not always recommended, beca...use it disregards possible stable growth of cracks, which might reach critical size for unstable growth, i.e. it does not prove that failure will not happen in future under the same conditions.
Кључне речи:
structural integrity assessment / Risk based approach / large pressure vesselИзвор:
Procedia Structural Integrity - 21st European Conference on Fracture, (Ecf21), 2016, 2, 3654-3659Издавач:
- Elsevier Science Bv, Amsterdam
DOI: 10.1016/j.prostr.2016.06.454
ISSN: 2452-3216
WoS: 000387976803089
Scopus: 2-s2.0-85049362718
Институција/група
Inovacioni centarTY - CONF AU - Sedmak, Aleksandar AU - Kirin, Snežana AU - Golubović, Tamara AU - Mitrović, Slobodan AU - Stanojević, Petar PY - 2016 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2294 AB - The risk based approach has been applied, in its simplest form, i.e. by using the risk matrix to illustrate how the water proof test can shift risk from high to very high level in the case of large spherical pressure vessel (ammonia storage tank). Having in mind the basic definition of risk, being the product of the probability and consequence, and fixing the consequence at the highest level, only probability of unfavourable event (leakage and/or failure) has been evaluated. Toward this end, the failure assessment diagram (FAD) has been used here as another simple engineering tool to estimate probability of the failure, as the function of the position of the operating point, i.e. defming probability as the ratio between the distance of the operating point from the zero point, and the appropriate distance between the point on the limiting curve and zero point. This simple engineering tool to assess structural integrity showed clearly that water proof test is not always recommended, because it disregards possible stable growth of cracks, which might reach critical size for unstable growth, i.e. it does not prove that failure will not happen in future under the same conditions. PB - Elsevier Science Bv, Amsterdam C3 - Procedia Structural Integrity - 21st European Conference on Fracture, (Ecf21) T1 - Risk Based Approach to Integrity Assessment of a Large Spherical Pressure Vessel EP - 3659 SP - 3654 VL - 2 DO - 10.1016/j.prostr.2016.06.454 ER -
@conference{ author = "Sedmak, Aleksandar and Kirin, Snežana and Golubović, Tamara and Mitrović, Slobodan and Stanojević, Petar", year = "2016", abstract = "The risk based approach has been applied, in its simplest form, i.e. by using the risk matrix to illustrate how the water proof test can shift risk from high to very high level in the case of large spherical pressure vessel (ammonia storage tank). Having in mind the basic definition of risk, being the product of the probability and consequence, and fixing the consequence at the highest level, only probability of unfavourable event (leakage and/or failure) has been evaluated. Toward this end, the failure assessment diagram (FAD) has been used here as another simple engineering tool to estimate probability of the failure, as the function of the position of the operating point, i.e. defming probability as the ratio between the distance of the operating point from the zero point, and the appropriate distance between the point on the limiting curve and zero point. This simple engineering tool to assess structural integrity showed clearly that water proof test is not always recommended, because it disregards possible stable growth of cracks, which might reach critical size for unstable growth, i.e. it does not prove that failure will not happen in future under the same conditions.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Procedia Structural Integrity - 21st European Conference on Fracture, (Ecf21)", title = "Risk Based Approach to Integrity Assessment of a Large Spherical Pressure Vessel", pages = "3659-3654", volume = "2", doi = "10.1016/j.prostr.2016.06.454" }
Sedmak, A., Kirin, S., Golubović, T., Mitrović, S.,& Stanojević, P.. (2016). Risk Based Approach to Integrity Assessment of a Large Spherical Pressure Vessel. in Procedia Structural Integrity - 21st European Conference on Fracture, (Ecf21) Elsevier Science Bv, Amsterdam., 2, 3654-3659. https://doi.org/10.1016/j.prostr.2016.06.454
Sedmak A, Kirin S, Golubović T, Mitrović S, Stanojević P. Risk Based Approach to Integrity Assessment of a Large Spherical Pressure Vessel. in Procedia Structural Integrity - 21st European Conference on Fracture, (Ecf21). 2016;2:3654-3659. doi:10.1016/j.prostr.2016.06.454 .
Sedmak, Aleksandar, Kirin, Snežana, Golubović, Tamara, Mitrović, Slobodan, Stanojević, Petar, "Risk Based Approach to Integrity Assessment of a Large Spherical Pressure Vessel" in Procedia Structural Integrity - 21st European Conference on Fracture, (Ecf21), 2 (2016):3654-3659, https://doi.org/10.1016/j.prostr.2016.06.454 . .