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Reactor design lines

A design line is a specific reactor product, not a physics family. Two AP1000s are interchangeable in a way that two pressurised water reactors are not — same fuel assembly, same vendor, same licensing basis. That is what makes design lines the useful unit for comparing build records and for tracing fuel supply upstream.

DesignVendorTypeGenOperatingBuildingAll units
HPR-1000 China National Nuclear Corporation PWR III 8 19 66
CAP1000 State Power Investment Corporation PWR III+ — 9 38
VVER-1200/V-491 Rosatom PWR III+ — 6 13
APR-1400 Korea Hydro & Nuclear Power PWR III 8 4 21
Horizontal Pressure Tube type Nuclear Power Corporation of India PHWR II 17 3 22
ABWR GE Vernova Hitachi Nuclear Energy BWR III 1 3 11
VVER-1200 Rosatom PWR III+ — 3 21
AP-1000 Westinghouse Electric Company PWR III+ 6 2 117
VVER V-213 Rosatom PWR II 19 1 25
CAP1400 State Power Investment Corporation PWR III+ 1 1 10
BWRX-300 GE Vernova Hitachi Nuclear Energy BWR III+ — 1 47
VVER-TOI Rosatom PWR III+ — 1 17
VVER V-320 Rosatom PWR II 25 — 29
CPR-1000 China General Nuclear Power Group PWR II+ 18 — 22
OPR-1000 Korea Hydro & Nuclear Power PWR II+ 12 — 12
CANDU 6 AtkinsRéalis (Candu Energy) PHWR II 9 — 14
AGR consortium GCR II 8 — 15
RBMK-1000 consortium LWGR II 7 — 13
EPR Framatome PWR III+ 2 — 18
PHWR-700 Nuclear Power Corporation of India PHWR II+ 2 — 16
VVER V-230 Rosatom PWR I 2 — 14
MAGNOX consortium GCR I 1 — 30
NuScale NuScale Power PWR III+ — — 61
Xe-100 X-energy HTGR IV — — 16
SMR-300 Holtec International PWR III+ — — 10

A further 179 model designations appear in the fleet data without a design page. Most are variant codes for a handful of families — Westinghouse loop counts, French CP and P4 series, GE BWR product numbers — rather than distinct products. They are shown on each reactor page as recorded, and their vendor is resolved where the designation makes it unambiguous.

Sources