ISO 14620-4:2025

Overview

ISO 14620-4:2025 – Space systems - Safety requirements - Part 4: Spacecraft assembly, integration and test is an internationally recognized safety standard developed by ISO. It specifies safety management and operational requirements for activities involved in the assembly, integration, and testing (AIT) of spacecraft. The standard applies to space test centres, ground support infrastructure, and any organizations responsible for spacecraft AIT processes. It provides a structured method for hazard identification, risk assessment, and risk mitigation to ensure the safety of personnel, equipment, inventories, and the overall environment during space system development.

Key Topics

• Safety Organization: ISO 14620-4 requires clear establishment of safety organizations, including defined roles such as safety representatives and qualified personnel for hazardous operations. Training and competence are emphasized, particularly when handling hazardous materials or conducting high-risk tasks.
• Hazard Identification and Risk Management: The standard details systematic hazard analysis, encompassing hazardous materials, abnormal system conditions, environmental factors, and lessons from previous operations. Each risk is assessed on likelihood, severity, and is classified and managed with appropriate mitigation measures.
• Operational Controls and Procedures: Documented safety procedures and checks are mandated for different phases of spacecraft AIT, from facility and equipment standards, to ground support equipment (GSE), hoisting, integration of pyrotechnics or radioactive products, and emergency responses.
• Documentation and Traceability: The requirement for comprehensive safety documentation supports traceability, accountability, and continual improvement. Incident records, safety summary reports, and inspection documentation must be maintained throughout the spacecraft’s lifecycle.
• Verification and Continuous Improvement: Safety risk controls are verified at specified intervals and after any system changes. Lessons learned from incidents are used for enhancing safety measures going forward.

Applications

Who Should Use ISO 14620-4?

• Space Test Centres: Organizations operating spacecraft test facilities benefit from standardized safety frameworks, ensuring consistent practices that protect assets, personnel, and mission objectives.
• Spacecraft Manufacturers and Integrators: Ensures systematic safety approaches during intricate operations like subsystem integration or environmental testing, supporting product reliability and regulatory compliance.
• AIT Service Providers: Entities providing logistics, hoisting, or assembly infrastructure can adopt ISO 14620-4 to structure their safety management systems and demonstrate best practice competence to clients and partners.
• Ground Support Equipment Designers: Engineers and manufacturers can refer to the standard to ensure GSE meets rigorous safety specifications, minimizing risks of mechanical or electrical failures.

Practical Value

Implementing ISO 14620-4 enhances operational safety, minimizes risk of injury or equipment failure, improves efficiency, and fulfills contractual and legal safety obligations. The structured approach to hazard identification and documentation supports audit readiness and aligns with international norms, fostering trust among stakeholders.

Related Standards

When applying ISO 14620-4:2025, cross-reference these related ISO standards for a robust space safety framework:

• ISO 14620-1: Space systems - Safety requirements - Part 1: System safety
• ISO 14620-2: Space systems - Safety requirements - Part 2: Launch site operations
• ISO 14625: Space systems - Ground support equipment for use at launch, landing or retrieval sites - General requirements
• ISO 10795: Space systems - Programme management and quality - Vocabulary
• ISO 17666: Space systems - Risk management
• ISO 18322: Space systems - General management requirements for space test centres

Adoption of these international standards ensures comprehensive safety management throughout space project lifecycles, from design and testing to operation and maintenance.