API Spec 1581-2002 pdf free download

API Spec 1581-2002 pdf free download.SPECIFICATIONS AND QUALIFICATION PROCEDURES FOR AVIATION JET FUEL FILTER/SEPARATORS.
This publication specifies the minimum performance and mechanical requirements and the testing and qualification procedures for aviation jet fuel filter/separators with flow rates ranging up to 9 500 lpm (2 500 gpm). (b) This specification defines procedures to qualify filter/separators with and without multi-stages. It does not qualify the actual multi-stage device(s). (c) The inclusion of additive packages in this publication is for testing purposes only and does not constitute acceptance or rejection of these additives in jet fuels by API/IP. (d) The performance specifications in this publication are for testing purposes only and do not necessarily constitute recommendations by API/IP for specifications in any application of the filter/separators. (e) Filter/separator systems currently qualified to the 4 th edition of this specification are qualified as meeting the performance requirements of this edition for the category tested. This provision does not reduce the performance requirements of products stated to meet this specification. 1.2 REFERENCED PUBLICATIONS The following publications are cited in this publication: Note: For this standard, the latest available edition of each referenced publication applies. API/IP 1 1582 Specification for similarity for API/IP 1581 aviation jet fuel filter/separators 1583 Specifications and qualification procedures for aviation fuel filter monitors with absorbent type elements ASME 2 Boiler and pressure vessel code, Section VIII: Rules for construction of boilers and pressure vessels
2.3.3 Type S-LD filter/separators Type S-LD filter/separators (also known as coalescer/ separators) can be used at all filtration points in an aviation fuelling system where significant levels of water but minimal amounts of dirt can be expected in the jet fuel. Examples of suitable locations could be immediately after a microfilter (used to remove dirt to acceptable levels) or at locations where acceptable dirt levels can be achieved without filtration. The qualification requirements for coalescer/separators are: (a) The Type S-LD filter/separator shall be able to maintain rated flow when it is contaminated with particulate to the level specified in Section 4 without the contamination in the effluent fuel exceeding the level specified in Section 3.1.1. (b) The Type S-LD filter/separator shall be able to effectively remove water from fuel without exceeding the effluent free-water levels specified in Section 3.1.1 when water is added according to the procedures specified in Section 4. 2.3.4 Multi-stage systems 2.3.4.1 Multi-stage systems can be used at all filtration points in an aviation fuelling system where two-stage filter/separators are used but where additional performance or assurance is desired. Multi-stage devices include pre-filters (upstream of filter/coalescers) and water absorbing elements (downstream of separators).
2.3.4.2 The qualification requirement for a multi-stage system is that the filter/separator shall be able to qualify under Section 2.3.2 or 2.3.3 when the multi-stage devices are installed. Note: This specification applies only to the filter/separator portion of the system. No specific level of performance by a multi-stage system is implied by this specification. 2.4 QUALIFICATION FOR OTHER CATEGORY AND/OR TYPE SYSTEMS 2.4.1 Categories 2.4.1.1 Single-element testing For single-element testing there is no automatic qualification between categories. Qualification for each category shall be established by testing. 2.4.1.2 Full-scale testing (a) Filter/separators qualified by testing to Category M100 also qualify for Category M at the test flow rate and conditions. (b) Filter/separators qualified by testing to Category M also qualify for Category C at the test flow rate and conditions. Note: Category M100 testing does not qualify to Category C. 2.4.2 Filter/separators qualified as Type S Filter/separators qualified as Type S by testing also qualify as Type S-LD at the tested flow rate and conditions.
3.1.1 Contamination of effluent fuel Contaminants in effluent fuel samples, taken during the specified test procedure and analysed by the specified methods, shall not exceed the following limits: (a) Total solids content of 0,26 milligrams per litre (1,0 milligrams per gallon) by ASTM D-2276. (b) Free water content of 15 ppmv by ASTM D-3240. (c) Media migration of 10 fibres per litre (38 fibres per gallon). 3.1.2 Media migration Any particle in the effluent with a length-to-diameter ratio of 10:1 or more and a length of 100 microns or more shall be counted as a fibre. 3.1.3 Solids holding capacity 3.1.3.1 Type S filter/separators, as tested in the single- element test, shall hold a quantity of solids greater than or equal to 1,43 grams per litre per minute (19 mg/l x 75 minutes) (5,4 grams per gpm) of rated flow. The unit shall hold 67 % of the specified quantity of solids without exceeding a differential pressure of 105 kPa (15 psi) and shall hold the total specified quantity of solids without exceeding a differential pressure of 315 kPa (45 psi).