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atw - International Journal for Nuclear Power | 05.2021

Description Ever since its first issue in 1956, the atw – International Journal for Nuclear Power has been a publisher of specialist articles, background reports, interviews and news about developments and trends from all important sectors of nuclear energy, nuclear technology and the energy industry. Internationally current and competent, the professional journal atw is a valuable source of information. www.nucmag.com

Description

Ever since its first issue in 1956, the atw – International Journal for Nuclear Power has been a publisher of specialist articles, background reports, interviews and news about developments and trends from all important sectors of nuclear energy, nuclear technology and the energy industry. Internationally current and competent, the professional journal atw is a valuable source of information.

www.nucmag.com

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<strong>atw</strong> Vol. 66 (2021) | Issue 5 ı September<br />

down their fossil-fired generation. As<br />

the sun goes down, people come home<br />

from work and turn on air conditioning<br />

and TVs and start using appliances<br />

like microwaves <strong>for</strong> dinner. As<br />

demand increases, solar disappears.<br />

Plain and simple, demand<br />

threatens to rise faster than the fossilfueled<br />

system can accommodate.<br />

The solution is to store energy <strong>for</strong><br />

when it’s needed most, and that’s<br />

where advanced nuclear technologies<br />

have a strong role to play. These<br />

nuclear innovations must be developed<br />

in parallel with increased<br />

deployment of wind and solar,<br />

building a foundation of always-on,<br />

carbon-free energy that can also help<br />

maintain the instantaneous balance<br />

between supply and demand.<br />

Four of the newest advanced<br />

nuclear designs are being prepared to<br />

store energy, using innovative ways to<br />

run a nuclear reactor continuously<br />

while varying the electricity output.<br />

When the reactor’s production of heat<br />

exceeds the demand <strong>for</strong> electricity, the<br />

excess energy is stored as heat. When<br />

demand <strong>for</strong> electricity is higher than<br />

what the reactor is producing, the<br />

extra heat is drawn from the storage<br />

tank and turned into electricity.<br />

An example of this design is<br />

the Natrium project, a partnership<br />

between Bill Gates’s Terra<strong>Power</strong> and<br />

GEHitachi that is backed by the United<br />

States Department of Energy.<br />

Natrium is choosing among four sites<br />

of soon-to-be-retired coal plants in<br />

Wyoming <strong>for</strong> a plant that can vary its<br />

output from 100 megawatts to 500<br />

megawatts.<br />

Terra<strong>Power</strong> also has a design <strong>for</strong> a<br />

molten chloride reactor that would<br />

store energy as heat. Moltex Energy<br />

and Terrestrial Energy also have reactors<br />

in design that would use a giant<br />

tank filled with salt or rocks as a bank<br />

<strong>for</strong> depositing or withdrawing heat.<br />

The concept keeps the reactor running<br />

at full output almost all the time,<br />

while creating heat storage and saving<br />

the energy <strong>for</strong> when it’s most valuable<br />

and needed.<br />

While other options exist to store<br />

energy, advanced nuclear technologies<br />

are critical to this ef<strong>for</strong>t as they<br />

offer both an efficient and environmentally<br />

friendly energy storage<br />

option. When compared to batteries<br />

<strong>for</strong> example, heat storage is cheaper<br />

and doesn’t require scarce minerals.<br />

Policymakers and developers are<br />

smartly investing in new innovative<br />

nuclear designs. Their investments<br />

have the potential to offer tremendous<br />

returns with new designs churning<br />

out the reliable, carbon-free energy<br />

necessary to reach our climate goals,<br />

while also helping match production<br />

with demand by efficiently storing<br />

energy as heat.<br />

Advanced reactors will be essential<br />

in multiple ways to our future energy<br />

grid, offering unique capabilities to<br />

complement wind and solar technologies<br />

and demonstrating vital<br />

inno vation to match our energy needs.<br />

| www.nei.org (211711749)<br />

*) Net-based values<br />

(Czech and Swiss nuclear<br />

power plants<br />

gross-based)<br />

1) Refueling<br />

2) Inspection<br />

3) Repair<br />

4) Stretch-out-operation<br />

5) Stretch-in-operation<br />

6) Hereof traction supply<br />

7) Incl. steam supply<br />

BWR: Boiling<br />

Water Reactor<br />

PWR: Pressurised Water<br />

Reactor<br />

Source: VGB<br />

63<br />

NEWS<br />

Operating Results June 2021<br />

Plant name Country Nominal<br />

capacity<br />

Type<br />

gross<br />

[MW]<br />

net<br />

[MW]<br />

Operating<br />

time<br />

generator<br />

[h]<br />

Energy generated, gross<br />

[MWh]<br />

Month Year Since<br />

commissioning<br />

Time availability<br />

[%]<br />

Energy availability<br />

[%] *) Energy utilisation<br />

[%] *)<br />

Month Year Month Year Month Year<br />

OL1 Olkiluoto BWR FI 910 880 720 654 062 3 599 066 280 633 783 100.00 91.13 99.48 89.71 98.74 90.08<br />

OL2 Olkiluoto 1) BWR FI 910 880 267 225 370 3 240 374 270 143 096 37.13 81.15 34.59 80.65 34.02 81.10<br />

KCB Borssele 1) PWR NL 512 484 0 0 1 671 972 173 740 769 0 76.26 -900 -73 0 75.21<br />

KKB 1 Beznau 6,7) PWR CH 380 365 720 270 721 1 531 404 134 742 790 100.00 92.84 100.00 92.35 98.92 92.72<br />

KKB 2 Beznau 7) PWR CH 380 365 720 268 898 1 646 434 142 022 735 100.00 100.00 100.00 100.00 98.26 99.78<br />

KKG Gösgen 1,2,7) PWR CH 1060 1010 143 120 843 3 673 361 334 559 950 100.00 93.76 16.15 79.38 15.83 79.79<br />

CNT-I Trillo 1,2) PWR ES 1066 1003 174 154 854 3 284 250 267 308 098 24.21 72.70 19.76 71.87 19.79 70.48<br />

Dukovany B1 PWR CZ 500 473 720 349 270 1 638 855 121 283 294 100.00 77.00 100.00 76.12 97.02 75.47<br />

Dukovany B2 PWR CZ 500 473 720 345 231 2 140 479 116 752 393 100.00 100.00 100.00 99.85 95.90 98.57<br />

Dukovany B3 PWR CZ 500 473 0 0 1 731 972 115 092 529 0 81.49 0 81.23 0 79.76<br />

Dukovany B4 PWR CZ 500 473 720 353 561 1 490 268 116 056 169 100.00 69.91 99.92 69.22 98.21 68.63<br />

Temelin B1 PWR CZ 1080 1030 720 775 720 3 197 225 132 768 515 100.00 68.78 99.91 67.83 99.57 68.04<br />

Temelin B2 PWR CZ 1080 1030 552 581 844 4 559 781 130 148 685 76.67 96.13 74.39 95.74 74.41 96.68<br />

Doel 1 2) PWR BE 454 433 250 102 737 1 699 977 141 713 819 34.67 83.53 30.87 82.77 30.46 84.01<br />

Doel 2 PWR BE 454 433 720 331 796 1 651 843 140 261 908 100.00 81.67 99.96 81.07 98.45 81.31<br />

Doel 3 PWR BE 1056 1006 720 753 303 4 572 808 275 785 119 100.00 99.35 99.01 98.93 98.53 99.13<br />

Doel 4 PWR BE 1084 1033 720 778 772 4 740 822 282 100 811 100.00 100.00 100.00 99.99 98.29 99.18<br />

Tihange 1 PWR BE 1009 962 720 704 797 4 365 712 312 232 687 100.00 100.00 99.91 99.59 97.08 99.84<br />

Tihange 2 PWR BE 1055 1008 720 735 259 3 356 279 269 060 096 100.00 78.69 99.15 73.55 97.64 73.78<br />

Tihange 3 PWR BE 1089 1038 720 761 960 4 670 136 291 323 795 100.00 100.00 99.96 99.98 97.61 99.27<br />

Plant name<br />

Type<br />

Nominal<br />

capacity<br />

gross<br />

[MW]<br />

net<br />

[MW]<br />

Operating<br />

time<br />

generator<br />

[h]<br />

Energy generated, gross<br />

[MWh]<br />

Time availability<br />

[%]<br />

Energy availability Energy utilisation<br />

[%] *) [%] *)<br />

Month Year Since Month Year Month Year Month Year<br />

commissioning<br />

GKN-II Neckarwestheim 1,2,4) DWR 1480 1410 256 309 100 5 336 450 356 687 994 35.56 89.32 35.56 89.30 30.48 87.97<br />

KBR Brokdorf DWR 1406 1335 720 1 023 756 5 991 517 377 254 846 100.00 100.00 100.00 99.97 95.87 93.02<br />

KKE Emsland DWR 1430 1360 720 992 975 5 467 645 374 478 346 100.00 90.81 100.00 90.65 98.07 89.59<br />

KKI-2 Isar DWR 1344 1288 720 995 880 6 298 729 383 727 772 100.00 100.00 100.00 99.99 92.60 97.34<br />

KRB C Gundremmingen SWR 1485 1410 720 932 684 5 824 160 356 301 926 100.00 100.00 98.02 99.59 95.64 99.08<br />

KWG Grohnde DWR 1400 1310 720 967 132 5 045 393 403 805 742 100.00 85.29 99.63 84.91 93.30 80.80<br />

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