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Publicatie Laka-bibliotheek:
Aging and Performance Decline File (1991)

Auteur	Energy Probe
Datum	juli 1991
Classificatie	6.01.3.30/04 (VEILIGHEID - REACTOREN - CANDU)
Voorkant

The Globe and Mail, Tuesday, November 13, 1990

ELECTRICITY / Ontario's nuclear reactors are suffering from old age, raising 
the rates for consumers, forcing Hydro to import power and giving the financial 
industry the jitters

Hardening of the nuclear arteries

BY THOMAS ADAMS

EIGHT of Ontario Hydro's 17 operating Candu reactors are nearing the halfway 
mark in their expected 40- year lives - and they are not aging gracefully
The older members of the nuclear fleet are beset with unexpectedly low output and 
staggering repair costs, pushing up the province's electricity rates, forcing Hydro to 
import power from the United States, and making the financial industry jittery about 
the giant utility's ability to stay solvent.
Hydro's oldest eight reactors at Pickering and Bruce, once world leaders in 
productivity, are now managing to eke out only 42 per cent of their potential - half 
the output Hydro forecast just three years ago.
The age-related breakdowns have been expensive and unexpected. The first serious 
one occurred in 1983 when a. Pickering reactor's pressure tubes failed without 
warning, leading to a four-year overhaul of one reactor and a five-year overhaul of 
another. The total tab was more than $1.3-billion - almost enough to have built two 
Pickering reactors from scratch.

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