ISO 14644-5:2025

Overview

ISO 14644-5:2025 (Cleanrooms and associated controlled environments - Part 5: Operations) defines requirements for establishing an Operations Control Programme (OCP) to maintain specified cleanliness levels in cleanrooms and controlled environments. Published as the second edition in 2025, the standard focuses on operational controls-personnel management, materials flow, cleaning, maintenance and monitoring-to ensure consistent contamination control during normal operation.

Key topics and technical requirements

The standard sets out operational requirements without prescribing detailed equipment design. Major technical areas include:

• Operations Control Programme (OCP)

  • Framework for policies and documented procedures to maintain target cleanliness levels.
  • Elements and additional considerations for effective program implementation.

• Materials flow and transfers

  • Procedures for incoming materials, finished goods, waste removal, transfer of portable tools and installation of large or stationary equipment.

• Personnel management and gowning

  • Staffing and access controls, gowning programme requirements, and restrictions to limit contamination sources.

• Training

  • Competency and training requirements for personnel involved in cleanroom operations.

• Cleaning programme

  • Routine and special cleaning practices, cleaning frequency and programme requirements (note: compatibility of cleaning agents with materials is excluded).

• Maintenance programme

  • Planned maintenance to preserve cleanliness and functional integrity of installations.

• Monitoring programme

  • Ongoing monitoring to confirm operational performance against specified cleanliness criteria.

• Informative annexes

  • Additional guidance on personnel management, gowning, training and cleaning.

Important exclusions: the standard does not specifically address biocontamination control (see ISO 14698-1/-2), general health & safety topics unrelated to contamination control, industry-specific requirements, or detailed equipment design.

Practical applications and who uses it

ISO 14644-5 is intended for organizations that design, construct, start up or operate cleanrooms and clean zones. Typical users include:

• Quality, operations and facilities managers in industries such as pharmaceuticals, biotechnology, medical devices, microelectronics, aerospace, optics, food, healthcare, automotive, defence and research laboratories.
• Cleanroom validation and compliance teams creating SOPs, training curricula and monitoring programmes.
• Contractors and maintenance teams responsible for equipment installation, cleaning and material transfer procedures.

Applying ISO 14644-5 helps reduce particle-related contamination risks, improve product quality, support regulatory compliance, and standardize operational practices across facilities.

Related standards

• ISO 14644-1 (airborne particle classification)
• ISO 14644-9 and ISO 14644-10 (surface cleanliness assessments)
• ISO 14644-18 (consumables suitability)
• ISO 14698-1 / ISO 14698-2 (biocontamination control – see for biological aspects)

Keywords: ISO 14644-5, cleanrooms, operations control programme, OCP, gowning programme, cleaning programme, monitoring programme, personnel management, materials flow.