_IP_Spec_1581-2002.pdf

SPECIFICATIONS AND QUALIFICATION PROCEDURESFOR AVIATION JET FUEL FILTER/SEPARATORSAPI/IP SPECIFICATION 1581Fifth editionJuly 2002SPECIFICATIONS AND QUALIFICATION PROCEDURESFOR AVIATION JET FUEL FILTER/SEPARATORSAPI/IP SPECIFICATION 1581Fifth editionJuly 2002Published jointly byAmerican Petroleum InstituteandThe Institute of Petroleum,LondonA charitable company limited by guaranteeCopyright 2002 by American Petroleum Institute,andThe Institute of Petroleum,London:A charitable company limited by guarantee.Registered No.135273,EnglandAll rights reservedNo part of this book may be reproduced by any means,or transmitted or translated intoa machine language without the written permission of the publisher.ISBN 0 85293 371 1Published by The Institute of PetroleumFurther copies can be obtained from Portland Customer Services.Commerce Way,Whitehall Industrial Estate,Colchester CO2 8HP,UK.Tel:+44(0)1206 796 351email:salesportland-vCONTENTSPageForeword.viiAcknowledgements.x1General.11.1 Scope.11.2 Referenced publications.12Description.32.1 General.32.2 Categories.42.3 Uses and qualification requirements.42.4 Qualification for other category and/or type systems.53Specifications.73.1 Performance.73.2 Mechanical specifications.84Testing and qualification procedure.134.1 Qualification by similarity.134.2 Test materials and facilities.134.3 Single-element test for filter/separators.164.4 Full-scale test method for filter/coalescers.194.5 Structural test.214.6 Environmental tests.214.7 Test sampling.224.8 Test data.23Annex A-Solids addition procedure.39viviiFOREWORDThis publication is designed to provide comprehensive specifications and qualification test procedures forfilter/separators used in systems that handle aviation jet fuel and is the result of collaboration between the AmericanPetroleum Institute and the Institute of Petroleum.This publication is one of a series of joint standards related toaviation fuel handling.The specifications in this publication are provided for the convenience of purchasers and manufacturers infabricating and supplying filter/separators,but in no way prohibit either purchasers or manufacturers frompurchasing or manufacturing equipment that meets other requirements.Changes in construction,media,cross section of elements or in vessel design(general,profile and flow pattern)from that tested and qualified shall constitute a redesign,thereby nullifying previous approvals.Redesigned unitsshall be requalified.Once an element model has been qualified,the manufacturer shall not change any aspect of element design ormaterials without prior approval from the purchaser(s)or requalifying the element in accordance with the conditionsdefined in this specification.If the purchaser(s)is requested to approve a change to an element model then the purchaser(s)has the right torequest a partial or complete retest of the filter/separator by the manufacturer to confirm its performance stillcomplies with these specifications.Purchasers may also request partial or complete retests should they havereasonable grounds for believing the performance of the filter/separator has deteriorated from the originalqualification tests.A product quality assurance program shall be in place.As a minimum,such a program shall include the annualsingle-element testing of each element model by the test procedure in this publication using the fuel of the moststringent category for which the element was qualified.The test results shall be filed with the results of thequalification tests for the subject elements and shall be made available upon request.Purchasers buying equipment in accordance with this publication should be aware that they have the right toconduct their own inspection independently of any supervisory inspection furnished by the manufacturer.Such aninspection should be based on the specifications of this publication.In addition,purchasers should avail themselvesof audit reports of qualification tests and facilities inspections that may have been undertaken as part of an industrycertification program.viiiThe main change included in this 5th edition of API/IP 1581 is to remove Petronate L from all the test chemistries.Testing has shown that products currently qualified to the 4th edition meet 5th edition requirements for the categorytested so that re-qualification is not required.This read-across from the 4th to the 5th edition applies only to thecategory tested and does not reduce the performance requirements of products produced to this publication.The 4th edition of API/IP 1581 included a number of significant changes from the 3rd edition.While changes in thefirst three editions served mainly to improve the consistency of aviation filtration equipment,changes in the 4thedition were primarily designed to raise the level of performance and reduce the uncertainty inherent in aviationfiltration.Specifically:The classes(A-C)of performance levels were eliminated.The analysis of data from the field indicated thatproduct contained a