ISO 24319:2022 PDF

Overview

ISO 24319:2022 - Ships and marine technology - Design and test requirements for small steel hatches using electrical trace heating - specifies design, materials, quality of manufacture, testing and designation of electrical trace heating for small steel hatches installed on vessels operating in low‑temperature environments (below −10 °C). The standard addresses anti‑icing performance and weather‑tightness for hatch covers, coamings and associated hardware where trace‑heating prevents freezing and enables hatch operation.

Key topics and technical requirements

• Scope and purpose
  • Applies to small steel hatches fitted with electrical trace heating (trace heater cable, heated pads, or panels) for ships sailing in waters with mean daily lows below −10 °C (e.g., Arctic, Baltic regions).
• Types and locking arrangements
  • Three hatch types defined by locking mode:
    • Type A: butterfly nut (wing nut) open
    • Type B: wedge‑handle open
    • Type C: hand‑wheel linkage open
• Sealing and dimensions
  • Sealing rubber stripe section: 45 mm × 20 mm; allowable initial compression 2 mm, compression under closing **