Добавил:
Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
01 POWER ISLAND / 04 CO2 capture / FEED Study for Retrofitting the Prairie State Generating Station with an 816 MWe Capture Plant using Mitsubishi Heavy Industries Post-Combustion CO2 Capture Technology.pdf
Скачиваний:
6
Добавлен:
29.05.2024
Размер:
10.74 Mб
Скачать

Communications Infrastructure

The plant communication system consists of the following major components: control cabinet, call stations, amplifiers, horns, drivers, system cables, and junction boxes. The stations have been located in high traffic areas where communication with others may be required. The horns have been placed to provide full, outdoor coverage for areas within the plant.

Control Cabinet

The system includes a Control Cabinet for supervision of system components and operation integrity. The cabinet provides the ability to make public address announcements from call stations and emergency live voice paging during an alarm condition.

Call Station

The system utilizes nine outdoor and indoor, wall-mounted handset call stations. The handset and telephones have a system-wide paging capability. Plant personnel may make a page using the handset by lifting the station handset and depressing the page button. The plant also has six desktop indoor call stations placed in the admiration building with the same control as the wall mounted models.

Bi-Directional Loudspeaker

The admin building has two bi-directional loudspeakers designed for the reproduction and broadcast of voice communications and pre-recorded tones and speech messages. These assemblies can be mounted in the ceiling of the building.

Line Balance Assembly

The Line Balance Assembly has been designed to properly load both page and party line circuits of the communication system. The Line Balance Assembly can be used in single or multiple (up to five) party line systems.

Amplifiers

Each outdoor driver/horn assembly is installed with a standalone speaker amplifier that powers the assemblies. The configuration is a distributed amplifier system, which allows an amplifier to be removed for whatever reason without affecting the other speakers on the system. The system is also electrically

Page 120 of 145