GOST 23797-79 PDF

Full title and description

GOST 23797-79 — "Масла для авиационных газотурбинных двигателей. Метод определения термоокислительной стабильности в объеме масла" (English: "Oil for aircraft gas turbine engines. Method for the determination of thermooxidizing stability in oil volume"). The standard specifies a laboratory test method for assessing the thermo-oxidative stability of lubricating oils intended for aircraft gas-turbine engines, including required apparatus and procedures for carrying out the test.

Abstract

This standard defines a bench-scale, thermal-oxidative test in which oil samples are heated under controlled airflow inside reaction vessels and the resultant oxidation products and changes in the oil are measured (condensate collection, visual/physical changes and mass/chemical indicators as specified). It establishes apparatus, sample preparation, test conditions (temperature, air flow, duration) and result processing to judge thermooxidative stability of turbine oils. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

General information

• Status: Withdrawn / removed from effect as of 01 January 2026 (previously in force for many years; listed as действующий in several repositories prior to cancellation).
• Publication date: Approved 29 August 1979; introduced into effect 01 January 1981 (designation ends with -79).
• Publisher: Approved by Gosstandart (State Committee for Standards of the USSR); published by the standards publishing organs (Izdatel'stvo standartov / related GOST collections and later reprints).
• ICS / categories: Petroleum and related technologies — Lubricants, industrial oils and related products (ICS/ОКС class 75.100).
• Edition / version: Original designation GOST 23797-79 (approved 1979, effective 1981); contains amendments incorporated (Amendment No.1 — 01.07.1983; Amendment No.2 — 01.12.1990) and later reprints.
• Number of pages: Core publication typically listed as 5 pages (some reproductions/reprints list 7 pages depending on pagination and integrated amendments).

Scope

The standard applies to lubricating oils intended for aircraft (aviation) gas-turbine engines and establishes a laboratory method to determine the oils' resistance to thermo-oxidation when heated in bulk (volume) under a controlled supply of air. It is intended for use in quality control, acceptance testing and comparative evaluation of turbine oils.

Key topics and requirements

• Definition of required test apparatus: reaction (test) vessel assembly, air delivery/tubing, condensate receiver and thermostat capable of maintaining elevated temperatures (test notes reference thermostats up to ~300–400 °C in apparatus descriptions). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Sample preparation and handling procedures to avoid pre-oxidation and contamination prior to testing.
• Specified test conditions: controlled temperature, air flow rate, test duration and steps for condensate collection and post-test handling.
• Criteria and methods for processing results: collection and measurement of condensate, observation of physical/visual changes and calculation/interpretation of stability indicators as described in the method.
• References and cross-references to related GOSTs for glassware, thermometers, air supply and other laboratory equipment used in the method. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Typical use and users

Test laboratories (industrial, military and third-party labs), lubricant manufacturers, engine OEMs and maintenance/overhaul organizations use this method for product development, acceptance testing and periodic quality control of turbine oils used in aircraft gas-turbine engines. Regulatory or procurement bodies and standards departments may also reference the method when specifying oil performance requirements.

Related standards

The method references and is used alongside other GOSTs and technical documents covering laboratory glassware, air supplies, thermometers and related test apparatus (examples of GOSTs cited in the text include standards for glassware and some apparatus). It sits within the family of standards for petroleum products and lubricants (ОКС/ICS 75.100) and is comparable in purpose to international turbine-oil test methods (ASTM / ISO methods for oxidation and thermal stability of turbine oils). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Keywords

GOST 23797-79; aviation turbine oil; thermo-oxidative stability; oxidation stability; thermal stability; reaction vessel test; lubricant testing; turbine oil quality; ОКС 75.100; aircraft gas-turbine engines.

FAQ

Q: What is this standard?

A: GOST 23797-79 is a Soviet / interstate GOST standard that specified a laboratory method for determining the thermo-oxidizing (thermo-oxidative) stability of oils for aircraft gas-turbine engines. It prescribes apparatus, test conditions and result-processing rules for a bulk (volume) oil oxidation test.

Q: What does it cover?

A: It covers the method for testing lubricant samples by heating them under a controlled flow of air in reaction vessels, collecting and measuring condensate and evaluating changes in the oil to determine resistance to thermo-oxidation — useful for assessing long-term high-temperature performance of turbine oils.

Q: Who typically uses it?

A: Test and certification laboratories, lubricant producers, aircraft engine manufacturers, maintenance/overhaul workshops and standards/regulatory bodies dealing with aviation lubricants.

Q: Is it current or superseded?

A: Historically the standard was in force (introduced 01 Jan 1981) and carried amendments integrated in later editions. However, according to publicly posted lists of normative documents, GOST 23797-79 was removed / listed as cancelled with effect from 01 January 2026. Users should consult their national standards body or the current official registry to confirm the present legal/regulatory status for their country and application.

Q: Is it part of a series?

A: It is part of the body of GOST standards that address oils and lubricants for aviation and industrial applications (within ОКС/ICS 75.100). While not a numbered multipart series, it is one of several GOST methods and specifications covering turbine/engine oils and related test procedures and references other GOSTs for apparatus and materials.

Q: What are the key keywords?

A: Key terms include thermo-oxidative stability, oxidation stability, turbine oil, aviation gas-turbine engines, lubricant testing, reaction vessel, condensate receiver, ОКС 75.100.