Objectives
In the framework of the “Tacis Nuclear Safety Programme”, it was decided to supply the BN-350 NPP (fast breeder) in Aktau, Kazakhstan with new storage batteries. These storage batteries were part of the permanent power supply system (PPS) for the reactor safety systems. One PPS comprised 2 storage batteries, one battery charger, one rectifier and one cell switch.
The supplier was requested to deliver 4 storage batteries and each battery needed to meet the following requirements:
• Nominal capacity (C10): 2000 Ah
• Number of elements: 130
• Voltage of each element at 20C: 2.2V
• Output rated voltage: 220V, 48V
• Disposition of batteries: vertical
The batteries had to be of the “valve regulated lead acid (VRLA)” technology and its containers needed to be of materials that have high strength, high stress crack resistance, high impact resistance and fire retardness. The supply of the batteries had to comply with the requirements of the Russian certification body NCB-Gost_Re by receiving the “GOST-R” stamp. Compliance with international standards, e.g. IEC, EN, ISO, was also considered to be important especially:
• Standard ISO 9001 (or EN 29001)
• Requirements of 50-C-QA Rev.1 from IAEA
• Standard IEC 896-2 or equivalent
• DIN Standard 40742 or equivalent
Appropriate packaging and transportation of the batteries and also appropriate training of two end-user experts was also included in the scope of supply.
Project Results
The company Deutsche Exide StanBy was chosen as supplier after competitive tendering. The contract started on the 12th December 2001 and ended on the 5th July 2002 with the successful delivery and installation of the batteries including related services