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Information Bulletin No. 17
(April 2001)

Feedwater Control System for South Ukraine Unit 2

On April 4-6, 2001 Westron successfully completed factory acceptance test (1st phase) of "Vulkan" Computer System for Feedwater Control System ("Vulkan" FWCS), Safety Class 3N system according to the General Safety Regulations-2000, designed for SUNPP Unit 2 steam generator feedwater level control within TACIS project.

"Vulkan" FWCS based on "Vulkan" equipment is the integrated and flexible computer system with the capability to be expanded in the future. It uses state-of-the-art equipment and real-time software.

"Vulkan" FWCS is a two-level distributed system which comprises computing facilities (network drops) connected by the network interfaces. Each of these facilities performs specific functions.

Drops of the lower level provide acquisition of analog and discrete signals, their processing, generation of signals for actuators control, alarm, and indication on "Vulkan" FWCS devices. These drops based on Intel486DX include analog and discrete input/output cards and the highway controllers through which they are connected to the common redundant data highway. Processors provide the cards input parameters acquisition and processing and their communication onto the redundant data highway.

"Vulkan" FWCS drops of the upper level provide man-machine interface; data collection, storage, retrieval, and logging; and calculate calculation tasks. These drops are based on Sun Microsystems UNIX real-time Solaris (SunOS) workstations with 22" monitor, trackball and highway controllers.

Functional control algorithms are developed by LvovORGRES people.

Westron has provided the development of documentation on the "Vulkan" FWCS hardware and software; cabinets and workstations assembly; test; development of the application software; base software configuration; development of plans and procedures for "Vulkan" FWCS integration and software verification test on Westron's test facilities.

"Vulkan" FWCS components are manufactured and shipped to Ukraine by Westinghouse Electric Europe (Brussels).

"Vulkan" FWCS is scheduled to put into operation during SUNPP Unit 2 outage in 2001.

Westron LLC
1 Akademika Proskury Str.,
Kharkiv 61070, Ukraine
Phone: +380-57-717-0601
Phone/Fax: +380-57-717-7956
E-mail: office@westron.kharkov.ua