|
International
Standard
ISO 10050
Second edition
Lubricants, industrial oils and
2024-07
related products (class L) — Family
T (Turbines) — Specifications of
triaryl phosphate ester turbine
control fluids (category ISO-L-TCD)
Lubrifiants, huiles industrielles et produits connexes (classe
L) — Famille T (Turbines) — Spécifications pour les fluides
de régulation de turbines à base d'esters de triaryl phosphate
(catégorie ISO-L-TCD)
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: [email protected]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Composition . 2
5 Safety precautions. 3
6 Dyes . 3
7 Sampling . 3
8 Required characteristics . 3
9 Precision and interpretation of test results . 3
Bibliography . 6
iii
Foreword
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 committees. 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 28, Petroleum and related products, fuels and
lubricants from natural or synthetic sources, Subcommittee SC 4, Classifications and specifications.
This second edition cancels and replaces the first edition (ISO 10050:2005), which has been technically
revised.
The main changes are as follows:
— addition of precisions about the composition of the products;
— addition of safety precautions;
— updates of the specifications:
— the temperature for elastomer compatibility has been lowered to 60 °C to reflect the conditions of use;
— the corrosiveness to copper test has been added;
— the maintenance and use guide IEC 60978 has been replaced by ISO 11365.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
International Standard ISO 10050:2024(en)
Lubricants, industrial oils and related products (class L) —
Family T (Turbines) — Specifications of triaryl phosphate
ester turbine control fluids (category ISO-L-TCD)
WARNING — The handling and use of products as specified in this document can be hazardous, if
suitable precautions are not observed. This document does not purport to address all the safety
problems associated with its use. It is the responsibility of the users of this document to establish
appropriate safety and health practices and determine the applicability of regulatory limitations
prior to use.
1 Scope
This document specifies the characteristics of unused triaryl phosphate ester fluids for turbine governor
controls and other hydraulic systems in electrical power stations. Fluids used in this application are
classified under category TCD of ISO 6743-5.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 48-2, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between 10
IRHD and 100 IRHD
ISO 760, Determination of water — Karl Fischer method (General method)
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 2160, Petroleum products — Corrosiveness to copper — Copper strip test
ISO 2592, Petroleum and related products — Determination of flash and fire points — Cleveland open cup method
ISO 3016, Petroleum and related products from natural or synthetic sources — Determination of pour point
ISO 3104, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity and
calculation of dynamic viscosity
ISO 3170, Petroleum liquids — Manual sampling
ISO 3675, Crude petroleum and liquid petroleum products — Laboratory determination of density —
Hydrometer method
ISO 4259-2, Petroleum and related products — Precision of measurement methods and results — Part 2:
Interpretation and application of precision data in relation to methods of test
ISO 4406, Hydraulic fluid power — Fluids — Method for coding the level of contamination by solid particles
ISO 6247, Petroleum products — Determination of foaming characteristics of lubricating oils
ISO 6614, Petroleum products — Determination of water separability of petroleum oils and synthetic fluids
ISO 6619, Petroleum products and lubricants — Neutralization number — Potentiometric titration method
ISO 9120, Petroleum and related products — Determination of air-release properties of steam turbine and other
oils — Impinger method
ISO 12185, Crude petroleum, petroleum products and related products — Determination of density —
Laboratory density meter with an oscillating U-tube sensor
ISO 12937, Petroleum products — Determination of water — Coulometric Karl Fischer titration method
ISO 13226, Rubber — Standard reference elastomers (SREs) for characterizing the effect of liquids on
vulcanized rubbers
ISO 14935, Petroleum and related products — Determination of wick flame persistence of fire-
...