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Information Bulletin No. 8
(August 1999)

Safety Parameters Display System (SPDS) of SUNPP Unit 1
Acceptance (interdepartmental) test

On July 20-21 according to South-Ukrainian NPP Unit 1 project schedule Site Acceptance Test of Safety Parameters Display System (SPDS) based on the Computing Information System "Vulkan CIS/SPD" Distributed Computer System (DCS) was performed at SUNPP.

The integrated "Vulkan CIS/SPD" DCS is developed by enhancement of SUNPP-1 CIS hardware and software, required for implementation at SPDS functions (including sensors, secondary converters and other equipment for dataline with field device).

The enhancement scope of "Vulkan" hardware is:

• 3 cabinets for Data Acquisition and Processing Subcomplexes (SKSO for input and primary processing of sensors and adjacent systems analog and discrete signals;

• 1 isolation cabinet for input of SVRK and AKNP signals;

• 1 SKSO for SGIU and AZTP datalink (interface RS-485, main and back-up datalinks;

• 2 cabinets for computation/data link servers (main and back-up with dual IPSs for SVRK and AKRB data link and calculation of SPDS calculated parameters);

• 4 workstation subcomplexes (SKRS) (based on SUN ULTRA 1) with the peripheral equipment (keyboards, monitors, trackballs, acoustic systems, disk drives and printers):

- Power Unit Shift Supervisor workstation;

- Plant Shift Supervisor workstation;

- Technical Support Center workstation;

- Crisis Center;

• network peripheral equipment.

On SPDS purpose and impact on safety it is class 3 system and is classified as 3Н according to ПНАЭГ-1-11-89 (ОПБ-88) and has category 2 of seismic stability according to ПНАЭГ-5-006-87.

The functional part of the project was developed by the experts of South-Ukrainian NPP and Westron consortium.

Westron consortium developed the documentation on CIS hardware and software, carried out assembly of cabinets and workstations, hardware testing, programming of SPDS non-standard application calculated tasks and configuration of the base CIS software, developed the plans and procedures for the system integration and CIS hardware and software tests at Westron’s facilities and SUNPP Unit 1.

Cabinets and workstations were manufactured by Hartron-Plant (Kharkov). The design documentation on cabinets and workstations manufacture was developed by Hartron-Enkos (Kharkov) on the technical project of Westron consortium.

The manufacture and delivery in Ukraine of WDPF components used in "Vulkan" DCS were provided by Westinghouse company on the basis of customer specifications of Westron consortium.

The CIS hardware were certified according to the requirements of Certification System UkrSEPRO (DSTU 3413-96) and accepted by the representatives of State Quality Center of the Ministry of Ecological Safety of Ukraine.

The system has passed a complete cycle of tests on conformity to the Y2K requirements.

The state nuclear and radiation safety expertise of the project by the State Scientific Technical Center of Nuclear and Radiation Safety has confirmed the conformity of SPDS to the defined requirements.

SPDS SAT was performed in the scope defined by SAT plan without any comments.

SAT commission accepted SPDS to be ready for pilot operation at SUNPP Unit 1.

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