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API Rec comm mend ded P Practtice 6 688 Pulsattion and Vibra ation Co ontrol in n Positive Disp placem ment Machinery Systems S s for Pe etroleum m, Petro ochemical, an nd al Gas Industrry Services Natura FIRST EDITIION | APRIL 20 012 | 128 PAGE ES | $151.00 | PRODUCT NO. C689801
The purpose e of this docum ment is to provvide guidance on o the application of o pulsation an nd vibration co ontrol requirem ments found in the e API purchasin ng specifications for positive displacemen nt machinery. The fundamen ntals of pulsatiion and piping system s analysis are presente ed in this Part. The text beg gins with an ovverview of the fundamentals f of pulsation an nd mechanical theory in Secttion 3. The inte ent of Section 3 is to introduce terminology and define the elements off the analysis process. p Sectio on 4 begins witth a discussion of o the acousticc and mechanical modeling techniques associated witth the differentt design philosophiess, which emph hasize either pu ulsation or mechanical control, and concludes c with a discussion on o the appropriate selection of a Design Approa ach and Philossophy. Section 5 discusses the efffects of pulsa ation on the accuracy of various types of flow measu urement device es. Section 6 su ummarizes the e requirementss for documentting study resultss. Section 7 offfers guidance on the performance e of field testin ng to validate the t results of the t design proce ess and to trou ubleshoot pulssation or vibrattion problems. Finally, F methodologies for con nducting a dyn namic analysis of the t compresso or or pump valvve performancce are described in n Section 8. Th he material in this t Part is gen nerally applicable to o all types of positive p displaccement machinery. Part 2 dealss specifically with w reciprocating compressors and provide es commentaryy regarding eacch paragraph of o Clause 7.9 of o API 618, 5th h Edition. It is the t intent of th he API Subcommitttee on Mechan nical Equipmen nt that similar material be provided on re eciprocating pu umps and scre ew compressorrs in future edittions.
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Contents Page
Part 1: Pulsation and Vibration Control Fundamentals for Positive Displacement Machinery 1