Calvert Cliffs Nuclear Power Plant

Bhatia, P. and Brown, W. W. Flame propagation tests on 600 V control and power cables for Calvert Cliffs Nuclear Power Plant I.E.E.E. Summer Meeting and International Symposium on high power testing, 1979. 

The PORV setpoint pressure was reached soon after steam generator dryout at 3738 s, as shown in Figure 8. The PORVs cycled to maintain RCS pressure until the core exit steam temperature reached 922 K the PORVs were latched open at 9560 s. Once the PORVs were latched open, the RCS pressure began to decrease until the accumulator setpoint pressure was reached at 12,270 s. The RCS pressure reduction was over twice as long as predicted for Surry. The PORV setpoint pressure of 16.55 MPa for Calvert Cliffs is higher than other PWR types (16.20 MPa for W PWRs and 15.65 MPa for B W PWRs). The accumulator setpoint pressure for CE PWRs was the lowest of any nuclear power plant type at 1.48 MPa compared to a typical value for other types of 4.24 MPa. Finally, the PORV ratio for Calvert Cliffs is 0.73 compared to Surry s value of 1.00. 

In addition, nuclear utilities in the United States are also extending plant operating lives. Baltimore Gas and Electric is seeking an extension of the license for its Calvert Cliffs facility -the news out of the NRC is favorable - and Duke Power has submitted an application for the license renewal of its Oconee plant. Extension of the licenses of such economically-competitive plants can make an important contribution to meeting our environmental goals. 

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