Water Management in Angra 2 NPP

Brazil

José Victor Jardim Sampaio vjardim@eletronuclear.gov.br

Nuclear Energy in Brazil

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BRAZIL Supplied by an electrical system of continental

dimensions

Manaus

Brasília

São Paulo Itaipu

Porto Alegre

Fortaleza

Salvador

Rio de Janeiro

Belo Horizonte

Recife

Angra

4.0

00

km

→ Generation sources concentrated (most part hydraulic) far from consumers centers → High degree of interconnection with big interregional energy exchanges 2

ANGRA DOS REIS / PARATY

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Central Nuclear Almirante Álvaro Alberto

Nuclear Energy in Brazil

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Nuclear Energy in Brazil

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Before and after...

Nuclear Energy in Brazil

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Present and future...

Hydrographic Basin Nuclear Energy in Brazil

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Water Concession Agreement Nuclear Energy in Brazil

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River Water Concession Annual Cost (2015)

Frade 100 m³/h

USD 18,600 Sacher 48 m³/h

Nuclear Energy in Brazil

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Qmáx = 120 m³/h Conductivity : ~70µS;cm pH : 6-7 Cl2 < 1,0 ppm Turbidity: 0.5 NTU

Demineralized Water System Nuclear Energy in Brazil

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Improvement Planned in the Demineralized Water System Nuclear Energy in Brazil

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- Reduction of 9000 m³/year - Reduced from 45 to 5 min to start production

Consumption of Demineralized Water Nuclear Energy in Brazil

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Blowdown Treatment System Nuclear Energy in Brazil

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Blowdown Treatment System Nuclear Energy in Brazil

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Blowdown Flow= 0,5 % of Feedwater (10 Kg/s) or (158.2 gpm)

20 % evaporate and return to FW tank

(2 Kg/s) or (31.7 gpm)

80 % demineralized (8 Kg/s) or (126.8

gpm)

Reuse of Drains During Outages Nuclear Energy in Brazil

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Leakage Identification Nuclear Energy in Brazil

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Primary Water Management During Outages Nuclear Energy in Brazil

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Primary and Auxiliary Systens Effluent Releases Nuclear Energy in Brazil

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OUTAGE

Secondary and Auxiliary Systens Effluent Releases Nuclear Energy in Brazil

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OUTAGE