18.08.2015   ANNEX III. AHWR. Bhabha Atomic Research Centre, India

ANNEX XIX. SCOR. Commissariat a l’Energie Atomique, France

Integral Reactor System

Reactor

Type

Power

(MW-th)

Passive Safety Systems

Simple COmpact Reactor (SCOR)

Commissariat a I’Energie Atomique, France

PWR

2000

CORE/PRIMARY:

• Residual Heat Removal System on Primary Circuit (RRP).

CONTAINMENT:

• Dedicated steam dump pool to prevent radioactivity release into the atmosphere in case of steam generator tube rupture.

• Containment pressure-suppression system.

• In-vessel core retention with corium cooling by pit flooding.

• Inert atmosphere in the reactor vessel compartment to prevent hydrogen combustion.

XVIII — 1. Introduction

SCOR (Simple COmpact Reactor) is a 2000 MW*th, integrated pressurized light water reactor (PWR), whose design was developed at the Nuclear Reactor Division of Commissariat a l’Energie Atomique at Cadarache in France.

The plant design, begun in 2000, was mainly defined for electricity production but could be adapted for desalination. The net power is 630 MW(e) (31.5% net efficiency). The SCOR concept respects the European Utility Requirements. The SCOR design is based on a compact reactor vessel that contains all the reactor coolant system components, including the pressurizer, the reactor coolant pumps, the control rod drive mechanism and the dedicated heat exchangers of the passive decay heat removal systems. The single steam generator is located above the reactor vessel. When applicable, the SCOR development adopted the generic notion of « Safety by design »5, sort of ‘design oriented safety approach’ which give the priority to a whole plant inherent behaviour able to meet an increased and well mastered level of safety vis a vis of the different safety functions.