Assesment of the temperature loading influence on crack resistance of a tank with a semi-eliptical crack

Reservoir parks are the main place of storage petroleum products. There has been a tendency transition to use larger tanks in recent years, which is economically justified. However, it leads fire risk increase accumulate large quantities Tank one most dangerous emergency event, can lead not only significant material damage but also ecological human losses case spreading other tanks. To ensure safety and test bearing capacity these conditions determination stress-strain state such must be performed taking into account temperature load. If there an initial crack tank wall assessment resistance should performed. In previous work authors determined stress intensity factor (SIF) distribution along semi-elliptical front RVS-5000 under hydrostatic pressure. The estimation steel vertical with thermal loading this article. It suppoused that part tank, located closest epicenter, heated unevenly height: from 300 degrees at top 200 bottom. On reaches 70 degrees. within thickness considered constant. Given asymmetric nature distribution, discrete model was developed for entire tank. After determining stress-strained whole pressure load, fragment calculated separately. stresses calculation used like external applied on boundaries. difference results direct energetic method SIF range 5%. Taking values by about 20 % comparison