_RP_550-1-9-1974_scan.pdf

API RP 550滋MANUALONINSTALLATION OF REFINERY INSTRUMENTSAND CONTROL SYSTEMSPART I-PROCESS INSTRUMENTATION AND CONTROLSECTION 9-AIR SUPPLY SYSTEMSTHIRD EDITION1974622.323AmePLEASE RETURN TO:-AM.E.P.L.ENG:NEERiNG LIBRARY IAPI RP 550MANUALONINSTALLATION OF REFINERY INSTRUMENTSAND CONTROL SYSTEMSPART I-PROCESS INSTRUMENTATION AND CONTROLSECTION 9-AIR SUPPLY SYSTEMSTHIRD EDITION1974亚AMERICAN PETROLEUM INSTITUTEDivision of Refining1801 K Street,N.W.Washington,D.C.20006Priee$1.00API specifications standardsare published as an aid to procurement of stan-dardized equipment and materials.These specifications are not intended to inhibitpurchasers and producers from purchasing or producing products made to specifica-tions other than API.Nothing contained in any API specification is to be construed as granting anyright,by implication or otherwise,for the manufacture,sale,or use in connectionwith any method,apparatus,or product covered by letters patent,nor as insuringanyone against liability for infringement of letters patent.API specifications may be used by anyone desiring to do so,and every effort hasbeen made by the Institute to assure the accuracy and reliability of the data con-tained in them.However,the Institute makes no representation,warranty,orguarantee in connection with the publication of API specifications and herebyexpressly disclaims any liability or responsibility for loss or damage resulting fromtheir use;for the violation of any federal,state,or municipal regulation with whichan API specification may confict;or for the infringement of any patent resultingfrom the use of an API specification.Copyright 1974 American Petroleum Institute