Summary Report for Conduct of Kozloduy NPP Stress Tests

“Kozloduy NPP” PLC
SUMMARY REPORT
for Conduct of Kozloduy NPP
Stress Tests
etc. They all are located at elevation over 0,00, which means that they cannot be flooded in terms of
flooding.
1.3.2.6.4 Alternative options to recharge the batteries
Maintaining and extension of battery operability can be provided in two ways:
· power supply to the rectifiers of the respective battery from side source;
· in blackout mode when the batteries are not powered, battery load reduction by
excluding duplicating loads or limiting the loads.
1.4 MAIN DATA FOR SFS
1.4.1 Main data of spent fuel storage
The storage facility is an independent building of the NPP site containing a pool with four
sections for storage and respective handling equipment required for spent nuclear fuel (SNF)
handling [25].
1.4.1.1 Storage facility type. Commissioning date
The initial design of SFS provides for its use for the time of storage of SNF from reactors
VVER-440 before its transfer to Russia. Before completion of construction of the facility design has
been prepared for additional equipment of SFS for intake and temporary storage of SNF from
VVER-1000 reactors. Construction of SFS on Kozloduy NPP site has been completed in late 1990
and before obtaining Authorization for operation in 2001 it was operated with temporary permit.
The storage facility is wet type, which implies SNF storage in baskets in a pool under water.
1.4.1.2 SFS design features
SFS building is a reinforced concrete structure, partly solid and partly prefabricated, and
supporting structures are metal.
The design capacity of the SFS is as follows:
· maximum number of baskets - 168;
· maximum total capacity of the energy output shall not exceed 1064 kW;
· maximum energy output capacity in one compartment shall not exceed 555 kW.
1.4.1.3 Systems and Equipment for Storage and Transportation of SNF
The SNF storage and transportation system is a compilation of facilities and equipment
designed for receiving, continuous storage under water of assemblies and packages with SNF.
A SNF pool (SFP) is located in the storage facility with four fuel storage compartments.
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