080121-08MN006-Sabina Hackett River Project Proposal ... - NIRB

Project DescriptionThe electrical rooms and control rooms will be pressurized and designed in accordance withoccupancy regulations.Non-process buildings will incorporate electrical rooms as required as an integral part of thebuilding.2.6.1.9 Process Control SystemProcess control for the plant will use a network of distributed controllers and Human-Machine-Interface (HMI) equipment. The control system, HMI stations and all associatedcommunications equipment will be of current technology that has been proven to be efficient andreliable in similar installations. The system shall be capable of direct expansion to control allequipment required to meet possible future requirements of the mine.The Process Control System will be based on proven PLC or DCS technologies.2.6.1.10 Field InstrumentationInstrumentation and control will consist of equipment used and applied for measurement andcontrol of process variables (e.g., pressure, level, flow, temperature, density, weight, speed, etc.).The degree of instrumentation will be the minimum required for safe operation of the plant andefficient control of the process using a minimum number of operators.All instrumentation furnished will be standard catalogue products of suppliers. Componentinterchangeability to minimize spare parts and to simplify service and repairs will be attemptedby using identical components, where practical.The project will implement 4 to 20 mA isolated with HART Protocol as the standard formeasurement instruments and control valves.2.6.1.11 Communications SystemsSite communications will be a satellite telecommunications system based on the following:• Fiber communications system backbone• Key equipment built-in redundancy to enable hot equipment change without loss ofservice• Voice, Data, Fax, Internet and Video (1000Base T devices) capabilities• Satellite earth station in dedicated enclosure with heat, light suitable for outdoor Arcticinstallation. This shall include antenna, transceivers, power supplies and all otherequipment requirements• Communications equipment including all Routers, Switches, Controllers, SecurityFirewall, modems and all other requirements for a complete system• UPS backup supply for a minimum 30 minute supply with system fully loaded• Wireless Ethernet bridge Master – Slave for remote site requirementsJanuary 2008 Hackett River Project – Project Proposal Sabina Silver CorporationReport Version B.1 2–27 Rescan Environmental Services Ltd. (Proj. #833-2)