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API Spec 1581

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  • Specification and Qualification Procedures for Aviation Jet Fuel Filter/Separators

    API/IP SPECIFICATION 1581 FOURTH EDITION, JANUARY 2000

    JOINTLY PUBLISHED BY:

    COPYRIGHT American Petroleum InstituteLicensed by Information Handling ServicesCOPYRIGHT American Petroleum InstituteLicensed by Information Handling Services

  • COPYRIGHT American Petroleum InstituteLicensed by Information Handling ServicesCOPYRIGHT American Petroleum InstituteLicensed by Information Handling Services

  • Specification and Qualification Procedures for Aviation Jet Fuel Filter/Separators

    Downstream Segment

    API/IP SPECIFICATION 1581FOURTH EDITION, JANUARY 2000

    JOINTLY PUBLISHED BY:

    COPYRIGHT American Petroleum InstituteLicensed by Information Handling ServicesCOPYRIGHT American Petroleum InstituteLicensed by Information Handling Services

  • SPECIAL NOTES

    API and IP publications necessarily address problems of a general nature. With respect toparticular circumstances, local, state, and federal laws and regulations should be reviewed.

    Neither API nor IP is undertaking to meet the duties of employers, manufacturers, or sup-pliers to warn and properly train and equip their employees, and others exposed, concerninghealth and safety risks and precautions, nor undertaking their obligations under local, state,or federal laws.

    Information concerning safety and health risks and proper precautions with respect to par-ticular materials and conditions should be obtained from the employer, the manufacturer orsupplier of that material, or the material safety data sheet.

    Nothing contained in any API or IP publication is to be construed as granting any right, byimplication or otherwise, for the manufacture, sale, or use of any method, apparatus, or prod-uct covered by letters patent. Neither should anything contained in the publication be con-strued as insuring anyone against liability for infringement of letters patent.

    Generally, API standards are reviewed and revised, reafrmed, or withdrawn at least everyve years. Sometimes a one-time extension of up to two years will be added to this reviewcycle. This publication will no longer be in effect ve years after its publication date as anoperative API standard or, where an extension has been granted, upon republication. Statusof the publication can be ascertained from the API Downstream Segment [telephone (202)682-8000]. A catalog of API publications and materials is published annually and updatedquarterly by API, 1220 L Street, N.W., Washington, D.C. 20005.

    This document was produced under API and IP standardization procedures that ensureappropriate notication and participation in the developmental process and is designated as ajoint API/IP standard. Questions concerning the interpretation of the content of this standardor comments and questions concerning the procedures under which this standard was devel-oped should be directed in writing to the general manager of the Downstream Segment,American Petroleum Institute, 1220 L Street, N.W., Washington, D.C. 20005. Requests forpermission to reproduce or translate all or any part of the material published herein shouldalso be addressed to the general manager.

    API and IP standards are published to facilitate the broad availability of proven, soundengineering and operating practices. These standards are not intended to obviate the need forapplying sound engineering judgment regarding when and where these standards should beutilized. The formulation and publication of API and IP standards is not intended in any wayto inhibit anyone from using any other practices.

    Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API standard is solely responsible for complying with all the applicablerequirements of that standard. API does not represent, warrant, or guarantee that such prod-ucts do in fact conform to the applicable API standard.

    All rights reserved. No part of this work may be reproduced, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise,

    without prior written permission from the publisher. Contact the Publisher, API Publishing Services, 1220 L Street, N.W., Washington, D.C. 20005.

    Copyright 2000American Petroleum Institute

    COPYRIGHT American Petroleum InstituteLicensed by Information Handling ServicesCOPYRIGHT American Petroleum InstituteLicensed by Information Handling Services

  • FOREWORD

    This publication is designed to provide comprehensive specications and qualication testprocedures for lter/separators used in systems that handle aviation jet fuel. It is the result ofa collaboration between the American Petroleum Institute and the Institute of Petroleum.This publication is the rst of a series of joint standards related to aviation fuel handling.

    The specications detailed in this publication are for the convenience of purchasers inordering, and manufacturers in fabricating, lter/separators, but are in no way intended toprohibit either purchasers or manufacturers from purchasing or manufacturing equipmentthat meets requirements other than those contained herein.

    Changes in construction, media, cross section of elements, manufacturing processes, orvessel design (general, prole and ow pattern) from that qualied by tests or similarity shallconstitute a redesign, thereby nullifying previous approvals. Redesigned units must berequalied.

    Once an element model has been qualied, no design or materials changes are to be madeby the manufacturer without re-qualication in accordance with the conditions dened inthis specication or without obtaining prior approval from the purchaser(s).

    The purchaser(s) will then have the right to request a partial or complete retest of the lter/separator by the manufacturer to conrm its performance still complies with these specica-tions. Purchasers may also request partial or complete retests should they have reasonablegrounds for believing the performance of the lter/separator has deteriorated from the origi-nal qualication tests.

    A product quality assurance program shall be in place. As a minimum, such a programshall include the annual single-element testing of each element model using the repetition ofsingle element tests procedure in this publication using the fuel of the most stringent cate-gory for which the element was qualied. The test results shall be led with the results of thequalication tests for the subject elements and shall be made available upon request.

    Purchasers buying equipment in accordance with this publication should be aware of theirright to furnish their own inspection independently of any supervisory inspection furnishedby the manufacturer. Such an inspection should closely follow the specications of this pub-lication. In addition, purchasers should avail themselves of reports of audits of qualicationtests and inspection of facilities which may have been undertaken as part of an industry cer-tication program.

    The 4th Edition of API/IP 1581 includes a number of signicant changes from the previ-ous edition. While changes in the rst three editions served mainly to improve the consis-tency of aviation ltration equipment, changes in the 4th Edition are primarily designed toraise the level of performance and reduce the uncertainty inherent in aviation ltration. Spe-cically:

    The classes (A-C) of performance levels are eliminated. The analysis of data from theeld indicated that product contained approximately the same magnitude of particulatethrough the entire handling system. This resulted in the conclusion that ltration needed tobe equally effective at all points in the handling system. Water handling capacity of new sys-tems on refueling equipment is also enhanced. Finally, a coalescer element with minimal dirthandling capacity is specied, known as SLD for low dirt, for use in intrinsically clean sys-tems or at locations immediately following microlter systems.

    The group classication (I without & II with additives) of lter/separator systems iseliminated in favor of three new categories (M100 for JP-8+100, M for JP-8/JP-5, and C forJet A/A1). This change brings commercial and military ltration requirements into a singlespecication.

    The composition of the test dirt is changed to ensure that it is a more consistent size(about 1 mm) than the dirt in the previous Editions. This reduces the effect of agglomerationand provides for more consistent and realistic results.

    iii

    COPYRIGHT American Petroleum InstituteLicensed by Information Handling ServicesCOPYRIGHT American Petroleum InstituteLicensed by Information Handling Services

  • An additive (Petronate L), known to disarm current lter separators, is added to all testfuels to increase the resistance to disarming of lter/coalescer systems. This removes the reli-ance on high dosages of additives to measure surfactant resistance. It provides a direct mea-sure of lter/coalescer coalescence performance.

    The inclusion of one or more additional stages to a lter/coalescer and separator systemis explicitly permitted. Additional stages envisioned include a water absorbing, fuse, or ltra-tion stage located inside separators.

    The testing protocol is changed to reduce the effort needed to qualify new elements. Theindividual runs are longer (water, dirt, water, 3% water) but only one single-element test isneeded for each model and conguration of lter/separator system. Multiple full-scale testsmay reference one single-element test.

    Access to the information about the vessel and contents is improved by dening specicinformation on permanent labels afxed to the vessel.

    Also, the similarity system is split into a separate document (API/IP 1582, in preparation)to permit the