ISO 24113:2023

Overview

ISO 24113:2023 - "Space systems - Space debris mitigation requirements" is the fourth edition (2023) of the international standard that defines high‑level requirements to minimize the creation and impact of space debris. It applies to all elements of unmanned systems launched into or passing through near‑Earth space, including launch vehicle orbital stages, operating spacecraft and any objects released during normal operations. The document translates international debris‑mitigation guidance into engineering requirements and complements lower‑level implementation standards.

Key topics and technical requirements

ISO 24113:2023 structures its requirements around practical risk‑reduction measures and lifecycle planning. Key technical topics include:

• Scope and terminology: clear definitions (e.g., disposal, end of mission, expected number of casualties per re‑entry) to support consistent implementation.
• Protected regions: requirements specific to highly utilized regions such as LEO and GEO to reduce long‑term interference.
• Restricting intentional release: limits on releasing objects into Earth orbit during normal operations (including guidance on pyrotechnics and solid rocket motors).
• Avoiding break‑ups: measures to prevent intentional and accidental break‑ups, including hazards from on‑board energy sources and collision‑induced fragmentation.
• End‑of‑mission disposal: mandated disposal actions (de‑orbit, graveyarding, re‑entry) to minimize post‑mission presence in protected regions; includes provisions for successful disposal and re‑entry planning.
• Re‑entry risk management: assessment of the expected number of casualties per re‑entry and requirements to limit ground‑impact hazards.
• Planning and documentation: requirement for a space debris mitigation plan and lifecycle planning (Annex A covers post‑launch life‑cycle phases).
• Probability assessments and reassessment: requirements to assess collision and break‑up probabilities and to reassess disposal capability before extending mission life.

Note: ISO 24113 is a high‑level requirements document; implementation methods are provided in related lower‑level standards.

Applications

ISO 24113:2023 is used to demonstrate due diligence in preventing space debris growth and managing re‑entry risk. Practical applications include:

• Design and verification of spacecraft and upper stages to meet debris mitigation requirements.
• Mission planning and end‑of‑life strategy (de‑orbit, graveyard orbit, controlled re‑entry).
• Regulatory compliance, licensing and certification evidence for national authorities and approving agents.
• Procurement clauses for manufacturers, launch service providers and satellite operators.
• Risk assessments for insurers and mission assurance teams.

Who should use this standard

• Spacecraft and launch vehicle designers and systems engineers
• Satellite operators and mission planners
• Launch providers and upper‑stage designers
• National regulators, licensing authorities and space agencies
• Safety, risk and insurance analysts

Related standards

ISO 24113 provides high‑level requirements; implementers should consult lower‑level technical and process standards referenced by agencies and industry for detailed methods of compliance (e.g., IADC, UN and national guidelines referenced in the standard).

Keywords: ISO 24113:2023, space debris mitigation, space systems, debris mitigation requirements, LEO, GEO, end of mission, controlled re‑entry.