![]() (PETROBRAS), Rio de Janeiro, RJ (Brazil)īy owning many tanks, vessels and process equipment, PETROBRAS has developed the concept of 'Fitness-For-Service' (suitability for use) under the standard API RP 579, i.e. ![]() Morato, Paulo Cesar Vidal Morato [Petroleo Brasileiro S.A. (author)Ĭalculating the price of tanks, vessels and process equipment of petrochemical industry second criteria of integrity and survival remaining of API RP 579 (Fitness for service) Calculo do preco de tanques, vasos e equipamentos de processo da industria petroquimica segundo criterios de integridade e sobrevida remanescente do API RP 579 (Fitness for service) These data were applied having the purpose of diagnosing typical situations existing in automated cultivated land crossings, related to OSBRA (Oleoduto Sao Paulo - Brasilia) right of way pipeline. Many loading simulations, with different operating and environment configurations to the buried installations, were realized. These evaluations were referenced from API RP 1102 american norm. In order to execute this analysis, analytical formulations were used to compute static and dynamic loadings. This paper has the objective promoting discussions about this theme, presenting preceding conclusions when analyzing pipeline stresses, when the pipeline equipment are submitted to great loadings of agricultural machines. ![]() (TRANSPETRO), Rio de Janeiro, RJ (Brazil)Īccording to the development of the agriculture business in the Midwest of Brazil, it can be noted that the cultivated land has imposed to the right of way pipeline weight and quantity increasing of vehicles moving above TRANSPETRO pipelines. Spagnolo, Rodrigo Alves Castro, Newton Camelo de [PETROBRAS Transportes S.A. Furthermore this will make the method fundamentally more consistent with soil behavior in deep foundationsĪpplications of API RP 1102 in stress analysis of buried pipelines at automated cultivation land Avaliacao de tensoes em dutos enterrados, em area de cultura mecanizada, a luz da norma API RP 1102Įnergy Technology Data Exchange (ETDEWEB) These modifications will reduce the discrepancies in the current API RP 2A method and increase the accuracy of the prediction of axial capacity of pipe piles in sand. In this paper, specific modifications to the current API RP 2A guidelines are proposed on the basis of a data base analysis to account for the discrepancies arising from (a), (b), and (c) above. An updated data base analysis shows that there are three major weaknesses in the current guidelines with respect to soil characterization: (a) the consideration of the lateral earth pressure coefficient, K, as a constant (1.0 or 0.8) (b) the consideration of the unit point bearing resistance, q, as a linear function of depth and (c) the absence of an unambiguous soil parameter determination process based on reliable in-situ test results. For axial capacity of piles in sand the current guidelines in many cases show definite discrepancies when compared against actual load capacities of piles. In the offshore, most foundations are steel pipe piles and most of them are designed using the API RP 2A guidelines. International Nuclear Information System (INIS) Improved soil characterization for pipe piles in sand in API RP-2A
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