OST 26.260.18-2004 PDF

Full title and description

OST 26.260.18-2004 — Process modules (technological blocks) for the gas and oil industry. General technical specifications. The standard establishes requirements for design, manufacture, acceptance, documentation, testing, packaging, transportation and warranty of factory-built process blocks delivered as ready assemblies or as units for site installation.

Abstract

This industry standard (OST) defines technical and quality requirements for technological blocks used in gas, oil and related industries. It covers construction and material rules, piping and pressure-equipment limits, welding and non‑destructive testing methods, instrumentation and automation layout, acceptance rules, documentation and packing/transport requirements. The standard is intended to support uniform design, safe manufacture and reliable field installation of process modules and is suitable for use in certification and procurement.

General information

• Status: Active / industry standard (status confirmed by industry letter of record; status in normative databases listed as действующий).
• Publication date: Introduced 01 June 2004 (date of entry into force: 01.06.2004).
• Publisher: Developed by DOAO "Central Design Bureau of Oil Equipment" (ДОАО ЦКБН) — OAO Gazprom; accepted by Technical Committee 260 (chemical and oil/gas process equipment).
• ICS / categories: Industry standard for oil & gas process equipment — covers technological blocks, pressure vessels, process piping, instrumentation and related manufacturing controls (classified by the issuing technical committee for chemical and oil & gas equipment).
• Edition / version: OST 26.260.18-2004 (original 2004 edition; designation includes year 2004).
• Number of pages: 125 pages (electronic/PDF editions sold by standard distributors list a 125‑page document).

Scope

The standard applies to technological blocks intended for gas, oil and related industries. It covers blocks that include pressure vessels and apparatuses with design pressure up to 16 MPa (160 kgf/cm²), and blocks without pressure vessels up to 32 MPa (320 kgf/cm²) at wall temperatures not lower than −70 °C. It also applies to piping systems of burners, furnace coils and fired heaters when assembled as blocks. The document is intended for use in design, manufacture, acceptance and supply of factory-built process modules and may be used for certification purposes.

Key topics and requirements

• Definitions and composition of a technological block (equipment, piping, valves, instrumentation, support structures, etc.).
• Design and construction requirements including arrangements for maintenance, lifting/transport, and provision for thermal expansion.
• Material selection and specific requirements for pipes, fasteners, forgings and welding consumables.
• Manufacturing rules: assembly, welding procedures, heat treatment and build‑up of blocks at factory level.
• Welding quality: welding procedure specification, control, acceptance criteria and repair of weld defects.
• Non‑destructive testing (radiographic, ultrasonic, magnetic particle, liquid penetrant) and metallographic/mechanical testing requirements.
• Acceptance rules, inspection records, block passport form and required documentation at delivery.
• Instrumentation, automation installation rules and temporary removal/packing of sensitive instruments for transport.
• Marking, packing, transportation and storage rules to protect blocks and removable items during shipment and handling.
• Manufacturer’s warranty provisions (typical warranty periods and exclusions) and requirements for spare parts and packing lists.

Typical use and users

Used by EPC contractors, equipment manufacturers, module fabricators, plant engineering departments, procurement and quality teams in oil & gas operators, and conformity/certification bodies. The standard guides design offices and workshop production to ensure modules meet consistent safety, manufacturability and transportability criteria.

Related standards

The OST references industry and regulatory documents (normative references listed in Annex A). It replaces an earlier OST designation (OST 26-18-5-88) and cross‑refers to national rules for pressure equipment and safety (for example, PB/ПБ rules) and technical documents such as RD 26-02-63 where special material/corrosion cracking requirements are relevant. Users should apply current referenced normative documents and regulatory rules (e.g., Ростехнадзор requirements) when using this OST.

Keywords

technological block, process module, oil and gas, process skid, pressure vessels, process piping, welding, NDT, acceptance, packing, transport, block passport, OST 26.260.18-2004.

FAQ

Q: What is this standard?

A: OST 26.260.18-2004 is an industry technical standard that sets general technical requirements for factory-built process modules (technological blocks) used in the gas and oil industries, covering design, manufacture, testing, documentation and delivery.

Q: What does it cover?

A: It covers composition and design rules for blocks, allowable pressure/temperature ranges, materials and welding requirements, NDT and mechanical testing, acceptance criteria, documentation (block passport), packing, transportation and warranty terms.

Q: Who typically uses it?

A: Module and skid manufacturers, engineering and design offices, EPC contractors, oil & gas operators, quality/inspection teams and certification bodies involved with procurement, factory testing and site installation of technological blocks.

Q: Is it current or superseded?

A: The OST 26.260.18-2004 edition (introduced 01 June 2004) is recorded as an active industry standard; industry communications (Gazprom/technical committee letter) confirm its status as действующий (active) and without a fixed expiration, but users must follow current referenced normative documents and regulator rules.

Q: Is it part of a series?

A: Yes — it belongs to the OST series for equipment and process modules in the chemical / oil & gas sector (developed under Technical Committee 260). It replaces or updates earlier OST designations in the same subject area (for example OST 26-18-5-88 is cited as replaced).

Q: What are the key keywords?

A: Technological block, process module, process skid, oil and gas equipment, pressure vessels, piping, welding, NDT, acceptance, packaging, block passport, OST 26.260.18-2004.