ISO 22538-6:2010

Overview

ISO 22538-6:2010 - Space systems - Oxygen safety - Part 6: Facility planning and implementation defines a process to ensure protection and safety of personnel, equipment and property associated with oxygen systems and components used in space-related activities. The standard applies to ground support equipment, launch vehicles and spacecraft and complements other parts of ISO 22538 that address design, materials, hazards and procedures.

Keywords: ISO 22538-6, oxygen safety, space systems, facility planning, LOX, GOX, quantity-distance

Key topics and technical requirements

ISO 22538-6 covers practical planning and implementation measures for oxygen facilities. Major technical topics include:

• Planning and environmental review

  • Begin oxygen safety planning at initial facility design stages.
  • Assess transport, storage, transfer, testing and vaporization scenarios for life, health and environmental risks.

• Vapour cloud dispersion

  • Conduct dispersion studies considering evaporation rates, spill sizes, cold vapour behavior and ignition potential.

• Fire and explosion protection

  • Implement containment, venting, separation and ignition prevention measures.
  • Provide automatic remote shut-offs and water-spray or equivalent systems for fire management.

• Quantity-distance relationships

  • Use quantity-distance criteria to choose site locations and separations for bulk oxygen storage and oxygen-fuel systems to mitigate fire, explosion and fragmentation risks.

• Facility design guidelines

  • Locate oxygen systems away from heat sources, minimize piping joints, provide grounding and lightning protection, and ensure safe access/egress and inspection capability.

• Hazards analysis

  • Identify failure modes (e.g., pump/compressor malfunctions), evaluate ignition risks from materials or mechanical friction, and specify mitigation (NPSP control, filtration, purge envelopes).

• Storage, containment and barricades

  • Guidance on LOX/GOX storage locations, storage tanks, impounding areas, barriers and protective structures.

• Oxygen detection and venting

  • Requirements for oxygen monitoring systems, decision logic, placement and planning for safe venting/disposal of liquid and gaseous oxygen.

Practical applications and intended users

ISO 22538-6 is intended for:

• Facility and site planners for space launch complexes and ground support facilities
• Aerospace/spacecraft systems engineers and safety engineers
• Ground operations managers and emergency response planners
• Contractors and consultants designing LOX/GOX storage, transfer and test infrastructure

Benefits include reduced operational risk, standardized safety practices for oxygen-enriched environments, and improved regulatory and program compliance.

Related standards

• ISO 22538 series (Parts 1–5): design, material selection, hazards analysis, operational and emergency procedures
• ISO 22538-5 is specifically referenced for operational and emergency procedures
• ISO 14952 referenced for cleaning and inspection considerations

Use ISO 22538-6 alongside material, design and operational standards to create a comprehensive oxygen safety program for space systems facilities.