.3 Vrata, ki niso neprepustna vrata na mehanični pogon, so narejena tako, da je zagotovljeno dobro zapiranje v primeru požara v prostoru, in sicer s pomočjo priprav za zapiranje na mehanični pogon ali s pomočjo samodejno zapirajočih se vrat, ki se lahko zapirajo pri nagibu 3,5 ° nasprotno od smeri zapiranja in imajo varnostno napravo za pridržanje z zadnjo kljuko ter napravo za daljinsko krmiljenje sprostitve vrat.
3 Doors other than power-operated watertight doors, shall be so arranged that positive closure is assured in case of fire in the space, by power-operated closing arrangements or by the provision of self-closing doors capable of closing against an inclination of 3,5° opposing closure and having a fail-safe hold-back facility, provided with a remotely operated release device.