70TH


ANNIVERSARY | REACTORS OF THE WORLD Calder Hall: Using four


natural uranium graphite moderated Magnox gas- cooled reactors, Calder Hall was the world’s fi rst commercial-scale power reactor when it was commissioned in 1956. Initial plant capacity was roughly 180 MWe.


Reactors of the world


Celebrating NEi’s legendary ‘Reactors of the world’ series. This snapshot highlights some of the very best from across the years.


MERLIN was a 19 MWth research reactor which fi rst started


operation in 1959 at Aldermaston Court in Berkshire, UK. This pool-type reactor was developed by Associated Electrical Industries (AEI) and was privately owned and operated. Decommissioning began in 1962.


Fugen: A demonstration Advanced Thermal Reactor (ATR),


Fugen was a heavy water moderated boiling light water reactor rated at 165 MWe. Located in the city of Tsuruga, Japan, it was the fi rst reactor to fully use MOX fuel. It began operations in 1979.


The CANDU 950 or CANDU 9 is an evolution of the Canada


deuterium uranium (CANDU) pressurised heavy water reactors fi rst developed in the late 1950s and 1960s by Atomic Energy of Canada Ltd (AECL) and others. The CANDU 950 is a single unit version of the integrated 4-Unit designs in operation at Bruce B and Darlington in Canada and is rated at 1050 MWe.


50 | April 2026 | www.neimagazine.com


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92  |  Page 93  |  Page 94  |  Page 95  |  Page 96  |  Page 97  |  Page 98  |  Page 99  |  Page 100  |  Page 101  |  Page 102  |  Page 103  |  Page 104  |  Page 105  |  Page 106  |  Page 107  |  Page 108  |  Page 109  |  Page 110  |  Page 111  |  Page 112