Environmental reporting core components

The common core components of environmental management systems and environmental reporting are ... 

In spite of their very low level, the impurities in the helium coolant can react with stmctural alloys because of the very high temperatures developed in the circuits and heat exchangers. Several GCR plants, with rather limited cumulated operating hours, have undergone postmortem analysis of the core internals and heat exchangers [8,9]. There are reports of some oxidation and at least one report of massive deposition of carbon on the internals, as discussed in more detail in the following sections however, there have been no problems with failure of components on the primary side associated with environmental effects. 

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