GOST 12.2.085-2002 PDF

Full title and description

GOST 12.2.085-2002 — Vessels working under pressure. Safety valves. Safety requirements (ГОСТ 12.2.085-2002. Сосуды, работающие под давлением. Клапаны предохранительные. Требования безопасности). This interstate standard establishes safety requirements for pressure-relief (safety) valves used on pressure vessels and related equipment.

Abstract

GOST 12.2.085-2002 sets out general safety provisions for the selection, installation, operation and basic testing/inspection requirements of safety (relief) valves fitted to pressure vessels and associated piping. It applies to equipment operating above the low-pressure threshold defined in the standard (see Scope). The standard was later superseded by a 2017 edition that provides updated selection and capacity-calculation rules.

General information

• Status: Withdrawn / replaced (superseded by GOST 12.2.085-2017).
• Publication date: Adopted 2002, introduced into force 1 July 2003 (effective date 2003-07-01).
• Publisher: Interstate standard (Межгосударственный стандарт), prepared with participation of NIIKHIMMASH and issued under national standards authorities (Gosstandart / related bodies).
• ICS / categories: 23.020.30 (Gas and liquid pressure vessels — related occupational safety classification).
• Edition / version: GOST 12.2.085-2002 (single edition; designation shows year 2002).
• Number of pages: Typically shown as 14–15 pages in distributed copies.

Scope

The standard applies to safety (relief) valves installed on pressure vessels, boilers, pipelines and similar equipment to protect against accidental overpressure by releasing working medium through the valve. It covers valves for equipment operating above the low-pressure threshold cited in the standard (commonly referenced in historical copies as ≈0.07 MPa or equivalent). It does not apply to equipment operated under vacuum conditions. The 2002 edition provided general safety requirements and was intended for application across the member states that adopted the interstate standard.

Key topics and requirements

• Definitions and classification of safety (relief) valves and their intended use on pressure vessels.
• Pressure thresholds and applicability (minimum working-pressure limits specified in the standard text).
• Requirements for design, materials and construction to ensure safe operation and resistance to the working medium.
• Set pressure, overpressure allowances and permissible discharge characteristics.
• Basic rules for capacity (throughput) calculation and selection of valve size/capacity (general procedures; more detailed selection/calculation is expanded in later editions).
• Installation, piping, drainage and discharge arrangements to avoid hazards during relief operation.
• Testing, inspection, marking, documentation and maintenance obligations for safe, continued operation.
• Operational and occupational-safety measures related to protection of personnel and equipment.

Typical use and users

Used by pressure-vessel manufacturers, valve manufacturers, plant designers, mechanical engineers, safety and reliability engineers, testing and certification bodies, and maintenance teams responsible for pressure equipment safety. Regulatory authorities and conformity-assessment organizations reference the standard in national/interstate safety regimes prior to its replacement.

Related standards

The 2002 edition replaced the earlier GOST 12.2.085-82 and itself was later replaced by GOST 12.2.085-2017 (which expands selection and capacity-calculation provisions). The 2017 edition references and aligns with other normative documents such as GOST 8.417 and various occupational-safety and pressure-equipment standards used for complementary testing, inspection and safety rules.

Keywords

safety valves; relief valves; pressure vessels; overpressure protection; set pressure; capacity calculation; installation; testing; maintenance; occupational safety.

FAQ

Q: What is this standard?

A: GOST 12.2.085-2002 is an interstate (GOST) standard that establishes safety requirements for safety/relief valves fitted to pressure vessels and similar equipment.

Q: What does it cover?

A: It covers definitions, applicability limits, basic design and material expectations, set-pressure requirements, installation and piping arrangements, testing and inspection, marking and documentation, and user/maintenance responsibilities for safety valves on pressure equipment.

Q: Who typically uses it?

A: Manufacturers of pressure vessels and valves, plant designers, safety engineers, maintenance personnel, and conformity-assessment and regulatory bodies involved in pressure-equipment safety.

Q: Is it current or superseded?

A: Superseded — GOST 12.2.085-2002 has been replaced by a later edition GOST 12.2.085-2017 (the newer edition updates selection and capacity-calculation provisions and entered into force via its registration/publication schedule in 2017–2018).

Q: Is it part of a series?

A: Yes — it belongs to the occupational-safety / pressure-equipment family of GOSTs related to vessels and valves (series of documents on pressure equipment and safety valves), and it follows earlier national/interstate documents such as GOST 12.2.085-82.

Q: What are the key keywords?

A: Safety valve, relief valve, pressure vessel, overpressure protection, set pressure, throughput (capacity) calculation, installation, testing, maintenance.