Page 15 - AERB Bulletin English

Nuclear Power Projects- Pre-Commissioning

View of KAPP-3&4 Project Site Erection of Dome Structure of Inner 700 MWe End Shield received at
Containment at KAPP-3 KAPP-3, 4 Site

Different Phases of Construction in KAPP-3
Stage-wise regulatory clearances granted by
Kakrapar Atomic Power Project-3&4 (KAPP-3&4)
is the first twin unit project in a series of 700 MWe AERB to KAPP -3
PHWR Units. This is an evolved design from 540 MWe
• Consent for Siting of Twin Units (KAPP-3&4)
PHWR (TAPS-3&4, Tarapur). A number of First-Of-A-
issued on May 25, 2009.
Kind (FOAK) systems/ features have been introduced
in 700 MWe PHWR design viz. steel lined containment, • Clearance for Site Excavation granted on
containment spray system, passive decay heat January 15, 2010.
removal system, partial boiling at the outlet of coolant
channels, mobile fuel transfer machine, forced • Clearance for First Pour of Concrete (FPC)
evaporation of tritiated liquid waste for discharging was granted on November 20, 2010.
to air route through stack, use of super heavy
• Permission to proceed with construction
concrete for construction of shielding structure of
activities beyond 91.7 m EL in November
Fuel Transfer Room etc. Pre-commissioning activities
2011.
were in progress at KAPP-3. AERB progressively
reviewed relevant submissions w.r.t. Safety analyses, • Erection of Major Equipment (last sub stage
Stress analysis reports, Commissioning Procedures &
of construction consent) granted on May 26,
reports, and Technical Specifications for Operation.
2014.
Application for authorization of Primary Heat
• Permission for Grouting End-Shields granted
Transport (PHT) System, Hot Conditioning and Light
on September 29, 2014.
Water Commissioning (LWC) of KAPP-3 was reviewed
and clearance for hot-conditioning and associated hot
• Clearance for hot-conditioning and associated
tests was granted on August 07, 2019. Subsequently,
hot tests granted on August 07, 2019.
clearance for balance LWC tests was granted on
November 01, 2019. • Clearance for balance Light Water
Commissioning tests granted on November
Based on AERB review observations, some of the
01, 2019.
commissioning tests were repeated. After completion
of PHT related commissioning tests, permission for
• Permission for draining of Light Water from
draining of Light Water from PHT system was granted
PHT system granted on December 16, 2019.
on December 16, 2019.

Electrical Installation work in progress at KAPP-3&4 Installation of Pre-Fabricated Ring Liner at KAPP-3

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AERB BULLETIN 2019
AERB BULLETIN 2019