An industrial plant of Xiamen adopted BHP Lysaght light-steel enclosure system without overlap-ping,screw penetration and layerage on the roof,which can provide reliable waterproof function and drainabili-ty;favorable prevention of temperature deformation,heat insulation,fireproofing,thermal retardation,sound ab-sorption and ventilation are available.

The schemes for the safety protection system of passenger train operation are studied and designed after the implementation of speed increase and opening to traffic of the electro-motive unit ( EMU) on Guangzhou-Shenzhen railway on the basis of the author' s working experiences in combination with the characteristics of EMU and the advanced control technology for the high-speed train abroad.

In the developing process of the protection system,the system’s visual simulation was realized for directly reflecting the influence produced by the optimize parameters to the system intercepting effect.

This a brief instruction of types and thickness for the protective system which were used for TFTZ symbol under the ocean atmospheric enviroment.