GOST 26291-84 PDF

Full title and description

GOST 26291-84 — "Надежность атомных станций и их оборудования. Общие положения и номенклатура показателей" (Reliability of atomic power stations and their equipment. General statements and reliability index nomenclature). The standard establishes general provisions and a nomenclature of reliability indicators used for nuclear (atomic) power stations, their reactor units, systems and equipment, including safety-important items.

Abstract

This standard defines terms, classification principles and the nomenclature of reliability indicators for atomic power stations (including power reactors, heat-supply and industrial heat plants), specifies grouping of systems and equipment by functional role, radiation exposure and failure consequences, and gives requirements for selection and use of reliability indices for design, operation and safety assessment. It includes amendments issued in 1987 and 1990/1991.

General information

• Status: In force / active (standard introduced and maintained since 1986; later amended).
• Publication date: Introduced 01 January 1986 (GOST designation year: 1984 — GOST 26291-84; entry into force 1986-01-01).
• Publisher: Adopted and published under the authority of the State Committee for Standards of the USSR (Gosstandart) / national standards body; maintained in Russian standards databases.
• ICS / categories: Energy / nuclear power (OKS/ОКС categories: energy and heat engineering — atomic energy; classification references used in Russian standards lists).
• Edition / version: GOST 26291-84 with Amendments (notably Amendment No.1 — 1987 and Amendment No.2 — 1990/1991); single basic edition from 1986 with integrated changes in later reprints.
• Number of pages: ~18 pages in common commercial editions (some sources list 17 pages depending on formatting/printing).

Scope

The standard applies to atomic stations (including nuclear power plants, heat-supply stations and industrial heat plants) as whole units, their reactor units, systems and equipment — including items important to safety. It standardizes terminology, classification of equipment by operational and radiation-related factors, and the nomenclature and selection rules for reliability indicators used in design, operation and safety assessment of nuclear installations.

Key topics and requirements

• Definitions and terminology for reliability of nuclear plant elements (terms used in reliability assessment and reporting).
• Classification of systems and equipment by functional purpose, radiation exposure, mode of operation and failure consequences (including categories for safety-important systems).
• Nomenclature of reliability indicators (examples include measures of failure/repair times, failure rates, availability and combined indices used for complex systems).
• Requirements and rules for choosing appropriate reliability indices for different groups of equipment and operational regimes.
• Considerations for hidden vs. evident failures, repairability, and modes of monitoring and testing that affect indicator selection.

Typical use and users

Primary users are nuclear power plant designers, system and reliability engineers, safety analysts, plant operators and regulatory bodies involved in assessment, reporting and improvement of reliability for reactor units, safety systems and plant equipment. Researchers and standards developers working on nuclear safety and reliability methodology also use this standard as a reference.

Related standards

GOST 26291-84 is part of a suite of standards addressing nuclear plant design, safety and reliability; it references and is cross-linked with other GOST/R and national documents (examples of related/Referenced documents include ГОСТ 26656-85 and ГОСТ 27518-87) and is cited by later standards on nuclear plant safety and equipment reliability.

Keywords

nuclear power plant, atomic station, reliability, availability, failure rate, mean time to failure, repair time, safety-important systems, nomenclature, classification.

FAQ

Q: What is this standard?

A: GOST 26291-84 is a national (Soviet-era) standard that defines general provisions and a standardized nomenclature of reliability indicators for atomic (nuclear) power stations and their equipment.

Q: What does it cover?

A: It covers terminology, classification of systems and equipment by function and exposure, the list (nomenclature) of reliability indices used for plant systems and equipment, and requirements for selecting appropriate indicators for design, operation and safety assessment.

Q: Who typically uses it?

A: Nuclear plant designers, reliability and safety engineers, operators, regulators and researchers concerned with assessment and documentation of equipment and system reliability at atomic stations.

Q: Is it current or superseded?

A: Sources list GOST 26291-84 as an established standard introduced in 1986 and maintained with amendments; many Russian standards databases record it as active (in force) though application in contemporary practice is often alongside newer national and international (e.g., IEC/Rosatom) regulatory documents. Users should check the current national standards registry for the latest legal status in a specific jurisdiction.

Q: Is it part of a series?

A: Yes — it belongs to a group of GOST standards addressing nuclear power plant equipment, safety and reliability; related GOSTs from the same period address complementary topics (examples include GOSTs in the 26280–264xx range and later standards that reference or build on it).

Q: What are the key keywords?

A: Reliability, nuclear/atomic power stations, availability, failure rate, mean time to failure (MTTF/MTTF), repair time, safety-important systems, nomenclature, classification.