_API_MPMS_19.3E_1997_2012.pdf

Manual of PetroleumMeasurement StandardsChapter 19.3-Evaporative LossMeasurementPart E-Weight Loss Test Method for theMeasurement of Deck-Fitting Loss Factorsfor Internal Floating-Roof TanksFIRST EDITION,MAY 1997REAFFIRMED,OCTOBER 2012ener光1AMERICAN PETROLEUM INSTITUTEFOREWORDThis standard provides rules for testing the deck fittings of internal floating roofs underlaboratory conditions to provide evaporative loss factors.It was prepared by Task Group II ofthe API Environmental Technical Advisory Group(ETAG).Testing programs conducted by API in 1982 and 1993 provided the information on whichthe current evaporative loss factors are based for common,generic types of internal floating-roof deck fittings.These deck-fitting loss factors are published in the API Manual of Petro-leum Measurement Standards(MPMS),Chapter 19.2,for use in estimating the evaporativeloss of petroleum stocks from floating-roof tanks.These deck-fitting loss factors and the testmethods used to develop them have been widely accepted by oil companies,manufacturers,industry groups,regulatory agencies,and general interest groups.API has not,however,tested or developed evaporative loss factors for proprietary designs of individual manufactur-ers.By publishing a testing protocol,API is making the test method available to interestedparties who wish to test particular deck fittings under the auspices of API.API certification of an evaporative loss factor developed through this program is subject tothe following three-step process:The testing shall be performed in laboratories licensed by API.The requirements to qual-ify for licensure are presented in API MPMS 19.3,Part G.Testing and determination of test results shall be performed as specified herein.The evaluation of these test results and the certification of an evaporative loss factor forthe item tested shall then be conducted in accordance with the API MPMS,19.3,Part F.API publications may be used by anyone desiring to do so.Every effort has been made bythe Institute to assure the accuracy and reliability of the data contained in them;however,theInstitute makes no representation,warranty,or guarantee in connection with this publicationand hereby expressly disclaims any liability or responsibility for loss or damage resultingfrom its use or for the violation of any federal,state,or municipal regulation with which thispublication may conflict.Suggested revisions are invited and should be submitted to the Measurement Coordinator,American Petroleum Institute,1220 L Street,N.W.,Washington,D.C.20005.食