英语翻译5.2.6 Vendor Package System ControlsOther plant subsyste

英语翻译
5.2.6 Vendor Package System Controls
Other plant subsystems,which are purchased as a package,shall be specified with an integral PLC based control system along with associated instrumentation and a local operator interface.
These control systems shall be connected to the operator stations in the control room via the plant Data Highway so that the operator can monitor selected critical parameters and alarms or provide supervisory command inputs such as turning a system on or off.The amount of data transmitted from these systems shall be kept to a minimum.To the extent possible,the same PLC vendor shall be specified for all of these systems in order to simplify plant maintenance work.The following systems may be included in this category:
l Boiler Make-up Water Treatment System
l Seawater Desalination System
l Condensate Polishing System
l Fly Ash handling system
l Complex Water Pump House
l Coal Handing System
l Fuel Oil Pump House
l Hydrogen Generating System
l Sewage Water Treatment System
l CEMS Emissions Monitoring System
The PLC's shall be connected to the DCS through data communication links such as Modbus,Profibus or Control Net for direct control variable transfers.They shall form a self-contained control system that shall continue to function even if other equipment or the communication links are lost.
The Owner may choose not to connect the CEMS System to the plant Data Highway because of regulatory agency requirements for separate electronic data reporting connections.

5.2.6卖方包装厂等控制系统的子系统,是作为购买一揽子 应指定与PLC的控制系统的一个组成同一个地方和相关仪器操作界面.这些控制系统应与经营站控制室等公路经厂数据 使操作可监视选定关键参数和警报、指挥监督提供诸如转投入体系 或休.从这些数据传送量系统应减至最低.为了尽可能 同临卖方应指定所有这些系统以简化维修厂工作.以下系统可列入这一类:公升锅炉化妆水处理系统海水淡化系统左旋左旋凝结飞灰处理系统左旋左旋合作制 水泵房送物左旋煤炭系统内部公升燃油泵1公升氢气发电系统污水图腾 浸渍排放监测系统烟气排放连续监测系统左旋临立会通过区相连通数据通信等 Modbus协议,或者总线控制网直接控制可变转让.它们应形成自足控制系统将继续运作到其他设备或即使通讯联系 正在丧失.所有者可以不连接电厂烟气排放连续监测系统数据因公路管理机构的要求 电子数据分开申报相亲.