Where practicable, the main vertical zone bulkheads shall be kept in a single vertical plane. However, on vessels designed for special purposes, such as automobile or railroad car ferries, where the installation of such bulkheads would defeat the purpose for which the vessel is intended, equivalent means for controlling and limiting a fire may be substituted if specifically approved by the Commandant. They shall be so constructed that, if subjected to the standard fire test , they would be capable of preventing the passage of smoke and flame for 1 hour. Table
JAR-25 Large Aeroplanes
The coated mineral wool remains in-situ during a fire situation and forms a barrier against the passage of flame, smoke and toxic gases. The system is the simplest of all fire stopping products to install. It is also one of, if not the most economical product to use. In many buildings, power cables e. No special precautions are required.
Those materials approved to the standards in 46 CFR are restricted for use on U. While the two systems use different test standards, the tests must be performed by an independent testing laboratory acceptable to the U. Coast Guard for those tests.
Building and fire codes require the construction of some interior walls and floor-ceiling assemblies to resist the passage of fire for a certain length of time, usually expressed in hours. These rated assemblies usually separate rooms, apartments, means of egress including exit corridors and stairways , and the different levels floors of the building. The method of preventing the passage of fire and products of combustion around and through pipes, electrical conduits, ducts, and cables is usually determined in new construction and remodeling by the architect and fire protection engineer, based on building, fire, and NFPA Life Safety Code requirements. During repairs and building and systems maintenance, the Authorities Having Jurisdiction AHJ expect that the same level of protection will be maintained as in the original construction. In most types of construction and occupancies, these penetrations of non-rated partitions and floor-ceiling assemblies require no special procedures; although some occupancies and AHJ will require smoke seal or fire caulk around each pipe, conduit, duct, and cable on both sides of the penetration.