Environmental Engineering Reference
In-Depth Information
The greatest differences from the basic design
and SPDS of other NPP units is that of the SPDS
of generating units number 1 and number 2 of
South-Ukrainian nuclear power plant (WWER-
1000 small series generating units). This pertains
especially to SPDS of unit number 1, which was
integrated into the computer information system,
previously built on the basis of the same hardware
devices, and similar in structure to the basic
software used (Designers of this system were
“Westinghouse” and “Westron”).
In spite of the differences, the main require-
ments, functions and design principles of the SPDS
were common for all generating units.
Specifics of the SPDS safety evaluation for
nuclear power plants of Ukraine (Anikanov,
2003; Brenman, 2006) were determined by the
following factors:
•
Expert analysis of designs of the basic
systems (for generating unit number 5 of
Zaporozhe nuclear power plant, for unit
number 1 of the Khmelnitsky nuclear pow-
er plant);
•
Expert analysis of the designs of the re-
maining systems with consideration of the
results of the expert analysis of the basic
systems and diferences of remaining sys-
tems from basic ones.
The greatest scope of documents was consid-
ered for basic systems:
• System conformal speciication;
• Technical speciications for hardware com-
plex based on which spds were developed;
• Reliability analysis report;
• Documentation on serial hardware sup-
plied by Westinghouse;
• Design
• Fundamental novelty of the system and its
functional purpose that had no analogues
in designs of Ukrainian nuclear power
plant units;
• Development of basic hardware and com-
ponents in accordance with regulatory
documents of the United States;
• Need to compare requirements of regulato-
ry documents efective in the United States
and in Ukraine;
• Necessity of supplementing initial re-
quirements for SPDS in the conforming
speciications (document of Westinghouse
Corporation) with special technical re-
quirements, which supplement the con-
forming speciications to the full extent
of the requirements, which are regulated
by Ukrainian standards for the feasibility
study for the system.
for SPDS
link
to operating
equipment;
• Documents on tests on the supplier's
site, including veriication and validation
documents;
• Preliminary safety analysis report;
• Documents on on-site tests;
• Pilot operation program and results;
• NPP Technical Solution with permission
for putting into pilot operation;
• Final safety analysis report;
• NPP Technical Solution with permission
for putting into stationary (permanent)
operation.
More limited scope of documents on SPDS
for other units was considered:
• Conformal speciication with special sup-
plementing technical requirements;
• NPP testing program and guideline;
•
In evaluating the safety of SPDS, in accordance
with the strategy for introducing the system at
nuclear power plants of Ukraine, the following
sequence of expert analyses was undertaken:
Safety analysis report;
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