414:. It was designed for a 4-year refueling cycle. In the process of refuelling, the entire core will be completely removed in a single evolution, and replaced in a second separate evolution, making the core nearly "plug and play", unlike traditional reactors, which require fuel handling and movement of individual fuel rods during a refueling outage. The entire used core, once removed, can be placed in storage in the spent fuel pool next to the IRV in the containment, which was designed to hold an entire 60 years worth of used fuel, and was accessible by the containment gantry crane located above the IRV within the containment.
132:
465:. If secondary cooling was lost, creating an effective loss of standard heat removal, there are water supplies located above and within the containment that can cool the vessel with gravity-driven cooling. Heat removal can be used if these systems are exhausted, such as by flooding the containment and establishing natural circulation, as no electrically driven pumps are required.
66:
25:
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The reactor was unveiled by
Babcock & Wilcox in June 2009. In July 2010, Babcock & Wilcox announced a formal alliance with Bechtel called Generation mPower LLC. At the same time, Babcock & Wilcox announced that it would build a test facility for the mPower reactor design at the Center for
445:
The integral once-through steam generator was an advanced derivative of the steam generators used in older B&W designs (Davis Besse). Control rod drives do not penetrate the IRV, as in the light water reactors of today, but are instead wholly enclosed within the IRV. Burnable neutron absorbers
394:
The reactor was planned to have a rated electrical output of 125–180 MWe. When originally announced, the reactor had planned capacity of 125 MWe. Later the power was increased to 160 MWe and then to 180 MWe. In its pre-application design certification interaction with the
361:
In March 2017 Bechtel withdrew from the joint venture, citing the inability to find a utility company that would provide a site for a first reactor and an investor. The development project was terminated, with
Babcock & Wilcox paying Bechtel a $ 30 million settlement.
349:
In
February 2014, Jim Ferland, B&W's CEO, announced that spending on the mPower reactor development will be decreased by 75%. The official explanation was that the company had failed in its effort to find additional major investors to participate in the project.
382:
that would store all of the spent fuel. The modular unit had a diameter of 4.5 metres (15 ft) and it was 23 metres (75 ft) high. The reactor core was 2 by 2 metres (6 ft 7 in by 6 ft 7 in). The steam generator was similar to
357:"Without the ability to secure significant additional investors or customer engineering, procurement and construction contracts to provide the financial support necessary to develop and deploy mPower reactors, the current development pace will be slowed."
343:(SMR) designs. The competition was intended to accelerate development of SMRs. The award was funded at $ 79 million in 2013, from a total of $ 150 million over five years, with a possibility of total government grants reaching $ 226 million or more.
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as the integral reactor vessel would not have a large cold or hot leg piping; it contains the entire primary coolant loop within the reactor pressure vessel with automatic primary loop
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In April 2014, Babcock & Wilcox announced it was scaling back investment in the programme, projecting investment of up to $ 15 million annually. It stated:
446:
within the fuel and control rod inventory are used to suppress hot excess reactivity. Cold shut-down was accomplished with control rod insertion (as in BWRs).
449:
The mPower was designed to produce superheated steam and would not require steam separators and dryers before admitting steam into the high-pressure turbine.
346:
In 2013 Babcock & Wilcox had intended to sell a majority stake in the mPower joint venture, but in
February 2014 announced it was unable to find a buyer.
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B&W mPower was a
Generation III+ integral pressurized water reactor (light water reactor) with a modular design. The reactor and
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for design certification by 2013. Babcock & Wilcox announced on
February 20, 2013, that they had contracted with the
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399:, the reactor's rated capacity was described as 500MWt of thermal power and 160 MWe of electrical power.
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426:(BWR). Like a BWR, the mPower reactor's primary coolant/moderator was highly purified water (with no
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430:). The Reactor Water Cleanup System ensures that primary system water remains pure. Similar to the
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438:(IRV). The mPower reactor control rods are inserted from the top of the core and inserted upon
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under gravity. All of the primary coolants were in the liquid phase during normal operation.
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387:(OTSG) used in existing B&W plants (i.e. Three Mile island). The unit had an air-cooled
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B&W mPower uses standard fuel enriched to 5%, similar to the fuel loaded in the other
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In March 2017, Bechtel withdrew from the joint venture and the project was terminated.
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290:. In April 2011, Babcock & Wilcox received a $ 5 million grant from the
434:, the mPower reactor had integral coolant recirculation pumps inside the
795:. Charlotte, NC: Babcock & Wilcox. February 20, 2013. Archived from
793:"B&W, TVA Sign Contract for Clinch River mPower Construction Permit"
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to apply for permits to build an mPower small modular reactor at TVA's
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893:"No sale: Babcock & Wilcox can.t find buyer for Generation mPower"
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Pre-Application
Documents for the B&W mPower Design (NRC website)
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In June 2011 Generation mPower signed a letter of intent with the
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United States-India
Peaceful Atomic Energy Cooperation Agreement
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The reactor was designed for an expected lifetime of 60 years.
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59:
18:
558:
Disavino, Scott; O'Grady, Eileen; Doggett, Tom (2009-06-10).
919:"B&W mPower cover story about lack of interest is bogus"
1122:
Rosner, Robert; Lordan, Rebecca; Goldberg, Stephen (2011).
534:"Bechtel And BWXT Quietly Terminate mPower Reactor Project"
391:
giving 31% thermal efficiency, and passive safety systems.
823:"Deal Advances Development of a Smaller Nuclear Reactor"
83:
698:"Babcock & Wilcox plans Virginia testing facility"
560:"McDermott B&W unit unveils small nuclear reactor"
1181:
B&W mPower reactor (Babcock & Wilcox website)
1093:"Babcock & Wilcox planning mini nuclear reactor"
1055:
1053:
94:, and by adding encyclopedic content written from a
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457:The mPower was designed to eliminate the potential
156:. Unsourced material may be challenged and removed.
945:. Nuclear Engineering International. 15 April 2014
734:"FACTBOX-U.S. proposed new nuclear power reactors"
527:
525:
422:The mPower incorporates several features of the
943:"B&W scales back small reactor development"
508:"Bechtel pulls out of mini-nuclear development"
355:
673:"B&W awarded grant for mPower development"
598:"B&W unveils modular nuclear power design"
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8:
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53:Learn how and when to remove these messages
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870:"SMR funding signed, sealed and delivered"
316:Generation mPower planned to apply to the
234:Learn how and when to remove this message
216:Learn how and when to remove this message
114:Learn how and when to remove this message
374:would be located in a single integrated
648:"B&W to build mPower test facility"
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305:for constructing up to six reactors at
1300:Russian floating nuclear power station
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75:contains content that is written like
966:"BWXT, Bechtel shelve mPower program"
821:Matthew L. Wald (February 20, 2013).
286:Advanced Engineering and Research in
7:
768:"TVA progresses with mPower project"
623:"B&W, Bechtel team up on mPower"
154:adding citations to reliable sources
296:Community Revitalisation Commission
1366:Nuclear power in the United States
964:Carmel, Margaret (15 March 2017).
14:
1243:Global Nuclear Energy Partnership
1131:Bulletin of the Atomic Scientists
34:This article has multiple issues.
1091:Mansfield, Duncan (2009-06-10).
891:John Downey (28 February 2014).
380:underground containment facility
292:Virginia Tobacco Indemnification
130:
64:
23:
1008:. February 2012. Archived from
848:"mPower empowered by SMR funds"
506:Simpson, Jack (17 March 2017).
335:In November 2012, mPower won a
141:needs additional citations for
42:or discuss these issues on the
1002:"Small Nuclear Power Reactors"
732:Disavino, Scott (2011-06-16).
16:Proposed small modular reactor
1:
1254:Next Generation Nuclear Plant
1038:Nuclear Regulatory Commission
397:Nuclear Regulatory Commission
385:Once Through Steam Generators
318:Nuclear Regulatory Commission
1060:Spring, Nancy (2010-01-01).
710:. 2010-07-27. Archived from
532:Adams, Rod (13 March 2017).
339:funding competition for new
307:Clinch River Breeder Reactor
1361:Nuclear power reactor types
1124:"Moving to passive designs"
1382:
897:Charlotte Business Journal
322:Tennessee Valley Authority
303:Tennessee Valley Authority
1263:Specialized plant designs
1006:World Nuclear Association
917:Adams, Roy (2014-06-20).
459:loss of coolant accidents
268:pressurized water reactor
1151:10.1177/0096340211413374
298:for this test facility.
288:Bedford County, Virginia
436:Integral Reactor Vessel
337:US Department of Energy
703:Bloomberg Businessweek
359:
475:Hyperion Power Module
424:boiling water reactor
341:Small modular reactor
252:small modular reactor
96:neutral point of view
1072:Pennwell Corporation
330:Oak Ridge, Tennessee
256:Babcock & Wilcox
150:improve this article
1143:2011BuAtS..67d..23R
850:. November 21, 2012
510:. Construction News
272:light water reactor
88:promotional content
827:The New York Times
772:World Nuclear News
677:World Nuclear News
652:World Nuclear News
627:World Nuclear News
602:World Nuclear News
418:Thermal hydraulics
406:Fuel and refueling
90:and inappropriate
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1335:Transatomic Power
1098:The Seattle Times
1067:Power Engineering
802:on March 30, 2013
326:Clinch River site
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1062:"B&W mPower"
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1235:Partnerships
1162:. Retrieved
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1014:. Retrieved
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832:February 21,
830:. Retrieved
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804:. Retrieved
797:the original
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776:. Retrieved
774:. 2011-06-17
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744:the original
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679:. 2011-04-13
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656:. Retrieved
654:. 2010-07-28
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629:. 2010-07-14
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604:. 2009-06-10
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570:the original
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148:Please help
143:verification
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86:by removing
82:Please help
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36:Please help
33:
1320:Gen4 Energy
274:) concept.
262:. It was a
1355:Categories
1330:TerraPower
1305:Toshiba 4S
1164:2012-02-21
1108:2012-02-17
1077:2012-02-16
1043:2012-02-16
1016:2012-02-17
928:2020-01-09
778:2012-02-17
750:2012-02-20
718:2012-02-17
683:2012-02-17
658:2012-02-17
633:2012-02-17
608:2012-02-17
576:2012-02-17
491:References
485:Toshiba 4S
428:boric acid
176:newspapers
84:improve it
39:improve it
1159:144323935
1137:(4): 27.
389:condenser
311:Tennessee
266:integral
45:talk page
1270:Fuji MSR
1222:Emerging
975:23 March
949:16 April
902:17 April
543:23 March
514:18 March
469:See also
309:site in
1340:Thorcon
1315:NuScale
1280:SC-HTGR
1228:markets
1139:Bibcode
739:Reuters
565:Reuters
480:NuScale
281:History
260:Bechtel
190:scholar
1290:SmAHTR
1157:
876:May 9,
854:May 9,
538:Forbes
453:Safety
366:Design
192:
185:
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171:
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1310:CAREM
1295:SSTAR
1275:PRISM
1155:S2CID
1127:(PDF)
440:scram
197:JSTOR
183:books
1285:IRIS
977:2017
951:2014
904:2014
878:2014
856:2014
834:2013
808:2013
545:2017
516:2017
432:ABWR
412:PWRs
294:and
246:The
169:news
1147:doi
328:in
152:by
1357::
1153:.
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1135:67
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1052:^
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1004:.
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895:.
825:.
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