By American Petroleum Institute
This foreign ordinary used to be built from API regular 610. eighth variation. 1995, with the cause that the ninth variation of API 610 may be the comparable as this overseas Standard.Users of this overseas general will be acutely aware that additional or differing specifications can be wanted for person purposes. This overseas normal isn't really meant to inhibit a seller from providing, or the buyer from accepting substitute apparatus or engineering options for the person program. this can be really applicable the place there's cutting edge or constructing know-how. the place another is accessible, the seller should still determine any adaptations from this overseas usual and supply information.
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Additional info for Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries
The following three subsections present the three inter-linked methods Life Cycle Assessment, Life Cycle Engineering (LCE), and Life Cycle Sustainability. LCA will be introduced first since it is subject to an ISO standard and forms the “classical” core of life cycle studies. The further developments towards LCE and LCS are addressed in the following sections. Links to further reading and other information sources will be given in the text and in the list of references. 1 Introduction For many years, the environmental assessment of materials, processes, and products took place in a rather isolated, non-quantitative manner.
It is also important to check to what extent uncertainties – for example through the estimation of data due to data gaps – may influence the result. These uncertainties may be determined by the calculation of a minimal–maximal range which reflects the possible extreme cases and the effects on the total results. The consistency check should ensure that the procedure is consistent with the goal and scope definition and that the methodology and rules have been accurately applied. 4 Conclusions and Recommendations The third phase contains the conclusions, the recommendations, and the presentation of results.
The relative relevancy of the environmental problem field Global Warming is weighted against that of Acidification, for example. What needs to be taken into consideration is that a weighting of such different environmental impacts is based on values and therefore cannot be attributed to scientific knowledge. In special cases however, the impact assessment results can be further aggregated in an evaluation. A prerequisite for this is that the impact assessment results maintain their transparency and accuracy and that the data before weighting is available.