ISO 15547-1:2005

Overview

ISO 15547-1:2005 specifies requirements and recommendations for plate-and-frame heat exchangers used in the petroleum, petrochemical and natural gas industries. The standard covers mechanical design, materials selection, fabrication, inspection, testing and preparation for shipment. It applies to gasketed, semi‑welded and welded plate-and-frame heat exchangers and is intended to support safe, reliable and maintainable plate-type heat exchanger installations.

Key topics and technical requirements

The standard addresses practical design and procurement details that vendors and purchasers must agree on, including:

• Design requirements

  • Frame and tie-bolt design to allow future installation of at least 20% extra plates.
  • Design for specified design pressure and design temperatures (purchaser must specify maximum and minimum metal temperatures).
  • Provision for fouling margin (purchaser to specify percentage fouling margin; U is the overall heat transfer coefficient).
  • Corrosion allowance rules (e.g., corrosion allowance for plate material is zero).

• Materials and components

  • Minimum nominal thickness for gasketed plates before pressing (documented requirement).
  • Requirements for carrying bars, pass plates, end plates and gasket identification.
  • Tie-bolt and nut specifications (e.g., minimum nominal diameter requirement and captive/running nut arrangement).

• Fabrication, inspection & testing

  • Compliance with an agreed pressure design code and structural welding code.
  • Vendor documentation: welding procedure specifications, calculations (if requested), and retention of fabrication records for at least five years.
  • Final records and a comprehensive user’s manual including assembly, operation, maintenance, and spare parts list.

• Drawings & data

  • Detailed general arrangement drawings and as-built data sheets (Annex C provides formats).
  • Information requirements such as mass empty/full, centre of gravity, support locations, flange ratings and allowable forces.

Applications

ISO 15547-1 is used by:

• EPC companies, plant operators and engineers specifying or procuring plate-and-frame heat exchangers for oil & gas, refining and petrochemical processes.
• Vendors and fabricators preparing proposals, shop drawings and quality records.
• Inspection and maintenance teams relying on standardized documentation for safe assembly, operation and spare parts planning.

Common applications include process heating/cooling, heat recovery, utilities and corrosive or high‑temperature services where plate-type exchangers offer compact, high‑efficiency heat transfer.

Related standards

• ISO 15547-2: (brazed aluminium plate-fin heat exchangers) - companion part of ISO 15547.
• ISO 8501-1 - referenced for steel surface preparation for painting.
• Applicable pressure vessel codes (e.g., ASME Section VIII, EN 13445) and structural welding codes as specified by purchaser.

Keywords: ISO 15547-1:2005, plate-and-frame heat exchangers, plate-type heat exchangers, petroleum petrochemical natural gas industries, gasketed semi-welded welded, mechanical design, materials selection, fabrication, inspection, testing.