Overview
ISO 24225:2022 - Ships and marine technology - Pneumatic quick-closing control devices defines requirements for the design, manufacture, testing and acceptance of marine pneumatic quick-closing control devices (PQCD). The standard covers terminology, system composition, classification, technical requirements and test methods for PQCD systems used to operate pneumatic quick-closing valves, fire dampers and shutters on ships and offshore installations. It also addresses system pressures, automatic controls, alarms, signal feedback, safety (fail‑safe design), and packaging, handling and marking for supply and installation.
Keywords: ISO 24225:2022, pneumatic quick-closing control devices, PQCD, marine pneumatic systems, ships and marine technology, SOLAS compliance, marine safety.
Key Topics and Technical Requirements
- Terms & definitions - consistent vocabulary for PQCD, control/display panels and remote cabinets.
- System design & components - composition of PQCD with components such as air filters, inlet/outlet valves, compressed air tanks, safety valves, pressure transducers/gauges, three‑way control valves, silencers, pipelines and control panels.
- System pressures & operation - requirements for rated input/output and minimum working pressures, pressure regulation and independent air supply/pressure relief for controlled pipelines.
- Control, feedback & alarms - requirements for remote operation, valve position display, status monitoring and alarm signalling; systems must be fail‑safe and revert to a predefined safe state on component failure.
- Materials & classifications - guidance on material selection and device classification by type and function.
- Performance & testing - procedures for strength, leakage and operational tests, air and power supply fluctuation tests, electrical properties (insulation, voltage withstand), environmental adaptability (dry heat, cold, damp heat, vibration, salt mist) and electromagnetic compatibility (EMC).
- Marking, packaging & handling - identification, packaging symbols and storage/handling practices for marine distribution.
Applications
ISO 24225:2022 applies to the design, manufacture and acceptance testing of PQCDs used to:
- Remotely operate pneumatic quick-closing valves, fire dampers and shutters on ships and offshore platforms.
- Enhance fire safety and emergency isolation systems onboard vessels and marine installations.
- Support compliance with SOLAS and other maritime safety regulations where pneumatic quick‑closing systems are required.
Who uses this standard
- Shipbuilders and marine equipment manufacturers
- Naval architects and system integrators
- Ship operators, safety officers and maintenance teams
- Classification societies and marine certification bodies
- Test laboratories and procurement/specification engineers
Related standards
Normative references include environmental and EMC test standards such as IEC 60068 series (environmental testing), IEC 60529 (IP code), IEC 61000‑4‑5 (surge), IEC 60533 (ship EMC) and ISO 780 (packaging symbols). These provide complementary test and compliance guidance for PQCDs.