Notley, N.J. Spinks ABSTRACT The CANDU reactor system has proven itself to be a world leader in terms of station availability and low total unit energy cost. Response of the Critical Reactor to a Reactivity Change 7.0 Define log rate and reactor period and state their relationship 8.0 Describe the response of a CANDU reactor at low power to a small step insertion of positive reactivity 9.0 Explain the effect of delayed neutrons on reactor control. Chapter 6 Thermalhydraulic Design (pdf 11.4Mb) by Dr. Nikola K. Popov, as of 2017.03.12 Chapter 7 Thermalhydraulic CANDU PWR CANDU CANDU PWR CANDU CANDU PWR PWR PWR CANDU CANDU Ref: Nuclear Engineering International Vol. The chapter includes a note on the advantages of the CANDU reactor compared with other water cooled reactors and a general review of reactor safety as applicable to most water cooled reactors. The acronym refers tae its deuterium oxide (hivy watter) moderator and its use o (originally, natural) uranium fuel. CANDU, short for Canada Deuterium Uranium, is a nuclear reactor that uses heavy water as a moderator and coolant and natural uranium as a fuel source. Reactor The CANDU, for Canada Deuterium Uranium, is a Canadian pressurized heavy-water reactor design used tae generate electric pouer. <>>> endstream The last seven CANDU reactors have been built on budget and on or ahead of schedule Advanced safety features that go above and beyond CANDU-PHW reactor core by introducing an annulus of enriched uranium around the central region of natural uranium. reactor rated at 450 MWe with two steam generators and two heat transport pumps connected in series. Although some of the material presented is common to other reactor types, the design details described pertain to the CANDU reactor. Built on proven Canadian technology, this CANDU 6.docx CANDU 6 The CANDU power reactor offers a combination of proven and superior state-of-the-art technology. -1<1��Bk�L�P�[�!�O��D��(��*,H!�'�GU ;�2�p�{]qM�k�rbء�Z��r;����}�吣_�8�'�aE���y����ױ��;%�_��R=7+L�gu�S���Wd8�ÇQ�|:�oj1��jJ��d���5�G������0�ꓘqz�iۺ�n�#`aHЊj)�n� endstream endobj 102 0 obj 236 endobj 81 0 obj << /Type /Page /Parent 75 0 R /Resources << /Font << /F0 93 0 R /F1 95 0 R /F2 97 0 R >> /ProcSet 100 0 R >> /Contents 96 0 R /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 82 0 obj << /Count 3 /Type /Outlines /First 83 0 R /Last 84 0 R >> endobj 83 0 obj << /Title (� ������0�,L) /Parent 82 0 R /A 90 0 R /Next 85 0 R >> endobj 84 0 obj << /Title (�O��"00��}ӣ) /Prev 85 0 R /Parent 82 0 R /A 86 0 R >> endobj 85 0 obj << /Title (��+�`dT�> endobj 86 0 obj << /S /GoToR /F 87 0 R /D [ 0 /Fit ] >> endobj 87 0 obj << /Type /FileSpec /F (j�}���E����) >> endobj 88 0 obj << /S /GoToR /F 89 0 R /D [ 0 /Fit ] >> endobj 89 0 obj << /Type /FileSpec /F (��ZL�F3L���) >> endobj 90 0 obj << /S /GoToR /F 91 0 R /D [ 0 /Fit ] >> endobj 91 0 obj << /Type /FileSpec /F (��eNu���Z) >> endobj 92 0 obj << /Type /FontDescriptor /FontName /TimesNewRoman /Flags 34 /FontBBox [ -250 -240 1200 900 ] /MissingWidth 780 /StemV 73 /StemH 73 /ItalicAngle 0 /CapHeight 900 /XHeight 630 /Ascent 900 /Descent -240 /Leading 180 /MaxWidth 1000 /AvgWidth 400 >> endobj 93 0 obj << /Type /Font /Subtype /TrueType /Name /F0 /BaseFont /TimesNewRoman,Bold /FirstChar 32 /LastChar 255 /Widths [ 260 340 560 500 500 980 840 280 340 340 500 560 260 340 260 280 500 500 500 500 500 500 500 500 500 500 340 340 560 560 560 500 940 720 680 720 720 660 600 780 780 380 500 800 660 960 720 780 600 780 720 560 660 720 720 1000 720 720 640 340 280 340 580 500 340 500 560 440 560 440 320 500 560 280 340 540 260 820 560 500 560 560 420 380 340 560 500 720 480 500 420 400 220 400 520 780 560 780 560 560 560 560 560 560 560 560 560 560 560 780 560 780 780 560 560 560 560 560 560 560 560 560 560 560 560 780 560 560 260 320 500 500 500 500 220 500 360 740 300 500 560 340 740 500 400 540 300 300 340 580 540 240 340 300 340 500 760 760 760 500 720 720 720 720 720 720 1000 720 660 660 660 660 380 380 380 380 720 720 780 780 780 780 780 560 780 720 720 720 720 720 620 560 500 500 500 500 500 500 720 440 440 440 440 440 280 280 280 280 500 560 500 500 500 500 500 540 500 560 560 560 560 500 560 500 ] /Encoding /WinAnsiEncoding /FontDescriptor 94 0 R >> endobj 94 0 obj << /Type /FontDescriptor /FontName /TimesNewRoman,Bold /Flags 16418 /FontBBox [ -250 -216 1200 1040 ] /MissingWidth 340 /StemV 136 /StemH 136 /ItalicAngle 0 /CapHeight 891 /XHeight 446 /Ascent 891 /Descent -216 /Leading 149 /MaxWidth 1000 /AvgWidth 427 >> endobj 95 0 obj << /Type /Font /Subtype /TrueType /Name /F1 /BaseFont /TimesNewRoman /FirstChar 31 /LastChar 255 /Widths [ 778 250 333 408 500 500 833 778 180 333 333 500 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 278 564 564 564 444 921 722 667 667 722 611 556 722 722 333 389 722 611 889 722 722 556 722 667 556 611 722 722 944 722 722 611 333 278 333 469 500 333 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 480 200 480 541 778 500 778 333 500 444 1000 500 500 333 1000 556 333 889 778 778 778 778 333 333 444 444 350 500 1000 333 980 389 333 722 778 778 722 250 333 500 500 500 500 200 500 333 760 276 500 564 333 760 500 400 549 300 300 333 576 453 250 333 300 310 500 750 750 750 444 722 722 722 722 722 722 889 667 611 611 611 611 333 333 333 333 722 722 722 722 722 722 722 564 722 722 722 722 722 722 556 500 444 444 444 444 444 444 667 444 444 444 444 444 278 278 278 278 500 500 500 500 500 500 500 549 500 500 500 500 500 500 500 500 ] /Encoding /WinAnsiEncoding /FontDescriptor 92 0 R >> endobj 96 0 obj << /Filter /FlateDecode /Length 99 0 R >> stream 0000002188 00000 n The CANDU 3 … tary reactor-physics design of CANDU reactors is presented, and the associated neutron energy spectrum is discussed. Initia1 Condition We suppose that initially 100 neutrons appear in a given neutron generation as a result of the fission processes. Advanced CANDU Reactor ACR-700 • Builds on CANDU 6 design, project and operational experience • Retained traditional CANDU features: – Modular horizontal fuel channel – Fuel bundle design – Low temperature, low pressure The CANDU reactor system has proven itself to be a world leader in terms of station availability and low total unit energy cost. The CANDU-HWR uses a heavy water radial reflector. CANDU stations use experts in health physics, radiation protection, shielding, and environ-mental safety to ensure that reactor operations comply with Canadian regulations in a safe and controlled manner. CANDU (sigla para Canadian Deuterium Uranium) é um modelo canadense de reator de água pesada pressurizada (PHWR) [1] para a produção de energia elétrica. Research and initial drafting by Albert Lee (AG It is somewhat an accident of history that Canada focussed all her nuclear power development effort on heavy water reactors. Buss Atomic Energy of Canada Limited Sheridan Science and Technology Park Mississauga, Ontario, Canada L5K 1B2 Abstract NG CANDU is the “Next® 0000002822 00000 n 77 0 obj << /Linearized 1 /O 81 /H [ 1261 352 ] /L 277526 /E 8324 /N 13 /T 275868 >> endobj xref 77 26 0000000016 00000 n which lead to the steady-state condition in a CANDU nuclear reactor. … 3 0 obj These reactors are heavy water cooled and moderated pressurized water reactors. In so doing, the authors acknowledge that while This reflector also has an important effect on reactor dynamics because of its very long diffusion length. CANDU is the most efficient of all reactors in using uranium: it uses about 15% less uranium than a pressurized water reactor for each megawatt of electricity produced Use of natural uranium widens the source of supply and makes fuel fabrication easier. approximately apply to the CANDU reactor. CANDU Nuclear Reactor - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. In 1985 four of the top ten reactor units in the world were CANDU reactors operating in South Korea and Canada. Ontario Power Generation; Inspection & Maintenance Services Division has been operating a variety of inspection systems to perform volumetric and surface nondestructive examinations of the pressure tubes. It concludes with some 0000002084 00000 n After the 2nd year, the CANDU reactor begins to operate practically as a thorium burner.Very high burn-up can be achieved with the same fuel (>160,000 MW D/MT). emphasis is placed on the CANDU 600 MW(e) design. 0000008050 00000 n 0000002368 00000 n The CANDU 6 design as implemented at sites in [or] if the reactor fails to shut down or the … A twin AFCR saves up to 13 0000001995 00000 n 0000002544 00000 n 0000001613 00000 n 0000002307 00000 n 6 0 obj Shutdown system number one (SDS-1) consists of characteristics of the very successful CANDU 6 reactor. CANDU reactors have two independent shutdown systems that can be actuated by the in-core reactor protection system and that are able to effect a rapid reactor shutdown. 0000001068 00000 n The CANDU reactor design (or PHWR – Pressurized Heavy Water Reactor) has been developed since the 1950s in Canada, and more recently also in India. How and Why is CANDU designed the way it is 1 Revision 3 – February 2003 1. This report presents the example of transport and extracts potential lessons to be drawn for international harmonization of reactor design and approaches to licensing. For educational use only, no assumed liability. 0000008072 00000 n 0000001908 00000 n Introduction - a reality check requires Quality of life Lots of Energy Coal Oil Gas Solar Wind Biogas Nuclear CANDU PWR BWR Gas reactors and other variations Resource limited Too dilute Let's step back to take a glimpse of the context into which CANDU must be placed. CANDU Reactor Fuel Cycle Flexibility: › - CANDU Fuel Cycle Advantages › - Operational Reactors (NUE) › - CANDU Reactor Inherent Safety Features › - New Build Reactors (AFCR) › - Future With Water Coolant › Dr. S. Kuran › VP, Advanced Fuel CANDU Reactor Workshop on Advanced Reactors… CANDU-PHW reactor core by introducing an annulus of enriched uranium around the central region of natural uranium. 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