Kakrapar (India)

Map of Kakrapar

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2 * PHWR 200 MW (CANDU) constructed by DAE/NPCI; grid connection in 1992 and 1995

Facilities in Kakrapar

plantreactor typconstruction startoperation startshut down
Kakrapar-1CANDU 200 (PHWR)19841992
Kakrapar-2CANDU 200 (PHWR)19851995

An incident involving failure of reactor regulating system during preventive maintenance
on Power UPS-1, leading to a reactor trip on ‘SG delta T high’ took place in KAPS-1on March
10, 2004.

Prior to the event, reactor was operating at 73%FP. During the event, the power supply
to all the adjusters failed while preventive maintenance on power UPS-1 was being carried out.
Consequently, the reactor power started increasing and the reactor tripped on ‘Steam Generator
delta T high. AERB rated this incident at level-2 as per INES. The event was also reported to IAEA
incident reporting system.
A detailed review of the incident revealed deficiencies in areas of human performance
and configuration of power supplies to reactor regulating system. Based on these reviews,
following major corrective measures were taken.
(source: CNS-report of India, 2007)


Start of commercial operation. aivailability factors during pre-commercial operation: 57% in April, 90% in May, 100% in June and 99% in July. planned turbine inspection in August.

Total cost of the two units including escalation in construction costs and interest over the construction period ( 8 years for unit-1 and 10 years for unit-2): US $ 425 million


Autorized start up after exhaustive review and recommendations on safety; Unit went critical at 8.1. Fire protection backfits ( after Narora-1 turbine fire) and ECCS improvements were implemented; Requalification of pumps & equipment in lower floors of the turbine building was necessary after heavy rain & flooding of the site - including cable tunnels.


Plant emergency when water from Moticher Lake flooded the turbine building and threatened the DG building. Plant was down since February for maintenance. The level of the lake which provides cooling water for the plant had risen rapidly due to heavy rainfall. Room with process water pumps and auxiliary feed pumps was flooded.


start of commercial operation.