1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationDD ISO/TS 11366:2011Petroleum and related products Guidance for in-servicing oflubricating oils for steam, gasand combined-cycle turbinesDD ISO/TS 11366:2011 DRAFT FOR DEVELOPMEN
2、TNational forewordThis Draft for Development is the UK implementation of ISO/TS 11366:2011.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this pro-visional bas
3、is, so that information and experience of its practical application can be obtained.Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for its conversion to an international standard. A review
4、of this publication will be initiated not later than 3 years after its publication by the international organization so that a decision can be taken on its status. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards.According to
5、 the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into an international Standard, to extend the life of the T e c h n i c a l S p e c i f i c a t i o n o r t o w i t h d r a w i t . C o m m e n t s s h o u l d b e s e n
6、 t to the Secretary of the responsible BSI Technical Committee at British Standards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to Technical Committee PTI/7, Lubricants and process fluids.A list of organizations represented on this committee can
7、 be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 67876 9ICS 75.100Compliance with a British Standard cannot confer immunity from legal obligation
8、s.This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate T e x t a f f e c t e dDD ISO/TS 11366:2011Reference numberISO/TS 11366:2011(E)ISO 2011TECHNICAL SPECIFICATION ISO/TS11366First editi
9、on2011-03-15Petroleum and related products Guidance for in-servicing of lubricating oils for steam, gas and combined-cycle turbines Ptrole et produits connexes Lignes directrices pour le suivi en service des huiles lubrifiantes pour turbines vapeur, gaz et cycle combin DD ISO/TS 11366:2011ISO/TS 113
10、66:2011(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading
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13、low. COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the addr
14、ess below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedDD ISO/TS 11366:2011ISO/TS 11366:2011(E)
15、ISO 2011 All rights reserved iiiContents Page Foreword .v Introductionvi 1 Scope1 2 Normative references1 3 Description of turbine oils1 4 Factors affecting the service life .2 4.1 General .2 4.2 Oil system design3 4.3 Conditions of the oil system at start-up3 4.4 Original oil quality .3 4.5 System
16、operating temperature 3 4.6 Contamination rates and provisions for purification 4 4.7 Oil make-up rates 4 5 Deterioration of turbine oils in service4 5.1 General .4 5.2 Viscosity.4 5.3 Oxidation stability .4 5.4 Solid particles 5 5.5 Sludge.5 5.6 Antirust properties 5 5.7 Water separability6 5.8 Foa
17、ming and air-release characteristics.6 5.9 Total acid number7 6 Recommended tests and interpretation7 6.1 Appearance and odour .7 6.2 Colour .7 6.3 Total acid number7 6.4 Sludge and deposits .7 6.5 Particle counting .8 6.6 Kinematic viscosity.8 6.7 Remaining oxidation stability 8 6.8 Water content.9
18、 6.9 Rust prevention characteristics.9 6.10 Water separability9 6.11 Foaming characteristics .9 6.12 Air-release value10 6.13 Flash point .10 7 Sampling 10 7.1 General .10 7.2 Sampling point.10 7.3 Sampling line .11 7.4 Containers11 7.5 Samples marking.11 8 Examination of new oil12 8.1 General .12 8
19、.2 Sampling of new oil deliveries .12 8.3 Examination of new oil deliveries13 8.4 Testing schedules .13 DD ISO/TS 11366:2011ISO/TS 11366:2011(E) iv ISO 2011 All rights reserved9 Examination of oils in service . 15 9.1 Testing procedures. 15 9.2 Frequency of the testing 18 Bibliography. 20 DD ISO/TS
20、11366:2011ISO/TS 11366:2011(E) ISO 2011 All rights reserved vForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical commi
21、ttees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the I
22、nternational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Internationa
23、l Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such do
24、cuments, a technical committee may decide to publish other types of normative document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of th
25、e parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years
26、in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or
27、 be withdrawn. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TS 11366 was prepared by Technical Committee ISO/TC 28, Petroleum products and lub
28、ricants, Subcommittee SC 4, Classifications and specifications. This first edition of ISO/TS 11366 is derived from the IEC 60962. ISO/TC 28 was asked by IEC/TC 10, Fluids for electrotechnical applications, to adopt a technically revised version of IEC 60962, to which a consideration of gas and combi
29、ned-cycle turbines has been added. DD ISO/TS 11366:2011ISO/TS 11366:2011(E) vi ISO 2011 All rights reservedIntroduction The in-service monitoring of turbine oils is largely recognized by the power generation industry as necessary to ensure long and trouble-free operation of turbines. There are three
30、 main types of stationary turbines used in power generation plants: a) steam turbines, b) gas turbines, and c) combined cycle turbines. The combined cycle turbines are of two types: the first type, in which a gas turbine is associated with a steam turbine, with separated lubricating circuits; the se
31、cond type, called single shaft combined cycle turbines, in which the steam and the gas turbines are on the same shaft and are lubricated with the same oil. The lubrication requirements of gasturbines and steam turbines are quite similar, but there are some major differences. Gas-turbine oils are sub
32、mitted to localized hot spots, and water contamination is less likely. Gas-turbine oils have a shorter service life than steam-turbine oils. Steam-turbine oils have a much longer lifetime and experience is available with lifetimes from 10 to 20 years depending on the top-up level. The lifetime of ga
33、s-turbine oils generally does not exceed two years. The values of the various characteristics mentioned in this Technical Specification are purely indicative. For proper interpretation of the results, account is taken of many factors, e.g. the type of equipment, the design of the lubricating oil cir
34、cuit and the top-up level. In all cases, the manufacturers instructions are followed. DD ISO/TS 11366:2011TECHNICAL SPECIFICATION ISO/TS 11366:2011(E) ISO 2011 All rights reserved 1Petroleum and related products Guidance for in-servicing of lubricating oils for steam, gas and combined-cycle turbines
35、 1 Scope This Technical Specification applies to mineral oils used as lubricating oils and to control fluids used to lubricate steam, gas and combined cycle turbines in service. The lubricants considered in this Technical Specification are those classified in ISO 6743-5 and specified in ISO 8068. Th
36、is Technical Specification is intended to help power equipment operators evaluate the conditions of the oil in their equipment and maintain the oils in serviceable conditions; help users understand how the oils deteriorate and carry out a meaningful programme of sampling and testing of oils in use.
37、This Technical Specification also gives instructions with respect to the corrective actions that are taken to maximize service life. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
38、 For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3170:2004, Petroleum liquids Manual sampling ISO 3722:1976, Hydraulic fluid power Fluid sample containers Qualifying and controlling cleaning methods ISO 4021:1992, Hydraulic fluid power Pa
39、rticulate contamination analysis Extraction of fluid samples from lines of an operating system ISO 8068:2006, Lubricants, industrial oils and related products (class L) Family T (Turbines) Specification for lubricating oils for turbines 3 Description of turbine oils Steam- and gas-turbines oils cons
40、ist of highly refined petroleum base stocks in which additives are added to provide or to improve oxidation stability, as well as rust-protection properties, corrosion-protection properties (mainly for copper and copper containing materials). Additional foam suppressants may be added to limit the fo
41、aming tendency. However, care should be taken to avoid adding too much foam suppressant, which may have detrimental effects on air-release properties. Demulsifiers may also be used to improve the water-shedding properties, but this should not be a common practice. Turbine oils should be formulated t
42、o have naturally good water-shedding properties, without the help of demulsifiers. DD ISO/TS 11366:2011ISO/TS 11366:2011(E) 2 ISO 2011 All rights reservedTo formulate turbine oils, base stocks of API groups I and II are used with success; for special applications, e.g. high-temperature gas turbines,
43、 API groups III and III+ base stocks can also be used. But in most instances, API group I and group II base stocks are largely sufficient for most applications. The refining degree of group I and group II base stocks vary from one producer to another. Hydrogen treatment is essential to get a good re
44、sponse to the antioxidants and to obtain good water-shedding and air-release properties. Numerous technologies are available to provide the necessary performance in terms of oxidation stability, and rust and corrosion protection. Combinations of phenol- and amine-type antioxidants, associated with p
45、roper rust inhibitors and copper corrosion inhibitors, are commonly used. For some applications, mainly when the turbine is coupled to gears, extreme-pressure additives are required. These extreme-pressure additives shall be chosen so as to not impair the oxidation stability. All new oils shall comp
46、ly with ISO 8068, which includes requirements with respect to the most important properties, as follows: oxidation stability; low tendency to sludge forming; rust-protection properties; copper corrosion-protection properties; foaming tendency; air-release ability; water-shedding characteristics. How
47、ever, all these properties cannot be expected to remain unchanged for the life of the oil. The oil unavoidably undergoes deterioration; some deterioration can be tolerated without prejudice to the safety and efficiency of the system. Good monitoring procedures are necessary to determine when the oil
48、 characteristics have reached the condemning limits, i.e. critical values for the most important characteristics that could be deleterious to the function of the installation. 4 Factors affecting the service life 4.1 General The following factors can affect the service life of turbine lubricating oi
49、ls: oil system design; condition of the oil system at start-up; original oil quality; system operating temperature; contamination rates and oil purification provisions; oil make-up rates. DD ISO/TS 11366:2011ISO/TS 11366:2011(E) ISO 2011 All rights reserved 34.2 Oil system design Most modern turbine-lubricating systems are very similar in design, especially for the larger units. The usual practice is to pressurize feed oil directly from main pump oil. To maintain reliability, after st
