Special Protection Systems Research Articles

Computer Room Fire Protection

Fire protection has several components: prevention, containment, detection, and suppression. While building codes and inspectors generally do not require special construction techniques or fire protection systems for computer rooms, economic and service factors may dictate that special protection be given such facilities. This article discusses emergency planning, the various types of fire detection and suppression systems, and future options, with particular attention given to halon and possiblehalon‐replacements.

An operations view of special protection systems

Four short reports are presented by personnel involved in operating major power systems where significant use of special protection systems (SPSs) is made. One report deals with the impact on the system operator. The second is concerned with documentation problems. Another illustrates how the rapid proliferation of SPSs makes operations more difficult. The final one highlights reliability concerns and the need for redundant systems. The general conclusion is that the proliferation of SPSs is having a major impact on the operation of bulk power supply systems, and that SPSs make system operations much more complex. >

Stone Crusher Incorporates Special Oil Circulation and Protection Systems

DESIGNED AND CONSTRUCTED FOR PRIMARY, SECONDARY AND TERTIARY STAGE CRUSHING, a large gyratory stone crusher, said to be the second largest stone crusher of its type to be produced in this country, has recently been made by Sheepbridge Equipment Limited, a subsidiary of Sheepbridge Engineering Limited, of Chesterfield. This machine incorporates interesting oil circulation and automatic protection systems.