ISO 5797:2004

Overview

ISO 5797:2004 - Ships and marine technology: Windows and side scuttles for fire-resistant constructions - specifies requirements for windows and side scuttles intended for installation in fire-resistant ship divisions. It applies to A-class and B-class divisions as defined in the IMO FTP Code (IMO Res. A 754 (18)) and covers construction, pane composition, testing and marking for compliance with SOLAS fire-resistance requirements.

Key topics and technical requirements

• Scope & classification
  • Covers fire-resisting windows/side scuttles for classes: A-0, A-15, A-30, A-60 and B-0, B-15, B-30.
  • “B” class typically for inside installations.
• Glass pane composition
  • Main pane must be thermally toughened safety glass in accordance with ISO 21005.
  • Acceptable pane types:
    • Type T (single) - one thermally toughened pane
    • Type L (laminated) - panes bonded with an interlayer
    • Types MT/ML (separated) - panes separated by a gap filled with non-adhesive medium (gas, gel, etc.)
  • Minimum thickness of the main pane (designation t1) must meet ISO 21005 and be suitable for design pressure per ISO 5779 / ISO 5780.
• Frame and construction
  • Frames must maintain the bulkhead integrity when tested to FTP Code fire tests.
  • Minimum requirements and reference constructions are given in ISO 1751 (side scuttles) and ISO 3903 (windows).
• Testing
  • Prototype fire tests required on full assemblies, performed by laboratories recognized by the administration.
  • Tests follow IMO/MSC Resolution 61(67), Annex 1, Part 3 (FTP Code test procedures).
  • Mechanical strength testing references include ISO 614 (punch method nondestructive testing).
• Marking
  • In addition to ISO 1751/3903 marks, panes must be marked with: “FIRE-PROOF”/“ANTI-FEU”, fire-resistance class (e.g., A-60), and “INSIDE” if composition is asymmetrical.
  • Hose-stream test designation: append “HS” to class marking.
  • Main glass pane marking per ISO 614.

Applications and users

ISO 5797:2004 is used by:

• Shipbuilders and maritime window/side-scuttle manufacturers ensuring fire-resistance compliance.
• Naval architects and marine systems designers specifying fire-rated glazing in bulkheads.
• Classification societies and flag administrations verifying SOLAS / FTP Code conformity.
• Ship safety officers and procurement teams sourcing compliant marine glazing.

Practical uses include installation design, prototype testing programs, regulatory certification, and product labeling for fire-resistant shipboard windows and portholes.

Related standards

• ISO 21005 (thermally toughened safety glass)
• ISO 614 (toughened glass strength testing)
• ISO 1751 (ships' side scuttles)
• ISO 3903 (ordinary rectangular windows)
• ISO 5779 / ISO 5780 (positioning, design pressure)
• IMO/MSC Resolution 61(67) and IMO Res. A 754 (18) - FTP Code

Keywords: ISO 5797:2004, fire-resistant windows, marine windows, side scuttles, FTP Code, IMO, SOLAS, thermally toughened safety glass, prototype testing, fire-resistance marking.