Results from semiscale MOD-2A upper head injection test series. [PWR]

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5331290

Shimeck, D J; Leonard, M T

A series of small break loss-of-coolant (SBLOCA) experiments and associated RELAP5/MOD computer code calculations have been performed by the Semiscale Program at the Idaho National Engineering Laboratory (INEL) to investigate the influence of upper head injection (UHI) on transient response. A UHI system, as designed for pressurized water reactors (PWR's), has an 8.7-MPa accumulator that injects emergency core coolant (ECC) directly into the upper head of the reactor vessel, and loop accumulators nominally pressurized to 2.86 MPa (as opposed to 4.14 MPa in a standard design). Since this configuration was optimized based upon large break LOCA calculations the experiments were requested by the US Nuclear Regulatory Commission (USNRC) to assist in evaluating system performance for SBLOCA's.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5331290
• Report Number(s): EGG-M-06181; CONF-811103-73; ON: DE82005628
• Country of Publication: United States
• Language: English

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