Seismic pumping

Fig. 1. onceptuai model for dispersion via groundwater flow after water-deposit interaotion. This model also indioates the formation of soil geoohemioal anomalies from seismic pumping of groundwater. 

Sibson R. H., McMoore J., and Rankin R. H. (1975) Seismic pumping—a hydrothermal fluid transport mechanism. J. Geol. Soc. London 131, 653-659. 

The theory of seismic pumping proposed by Panov and co-workers at the Donetzk Polytechnical Institute (pers. commun., 1981 Panov et al., 1980) attributes anomalous Rn occurrences over fault zones to micropulsations in active fault zones that increase the emanation efficiency of soils. They base their theory partly on the fact that Tn activities rise simultaneously with Rn activities over active faults and partly on the fact that there are no unusual Ra accumulations in the soils where the anomalous Rn values are observed. The theory is attractive and warrants further investigation. Zverev et al. (1980) have also observed increased Rn and Tn emanation over faults and in laboratory experiments soil samples under treatment with ultrasound do indeed emanate more Rn than samples not so treated. Wilkening (1980) has reviewed the processes by which Rn is transported from the soil to the Earth s surface and concludes that " Rn transport by ordinary molecular diffusion appears to be the dominant process". 

Sibson, R.H., Moore, J.Mc.M. and Rankin, A.H. 1975. Seismic pumping hydrothermal fluid transport mechanisms. J. Geol. Soc. London, 131 653-659. 

Wood, J.R. Boles, J.R. (1991) Evidence for episodic cementation and diagenetic recording of seismic pumping events. North Coles Levee, California, USA. Appl Geochem., 6, 501-521. 

The four primary coolant pumps are connected to the secondary shield wall by three-link snubbers designed to be flexible under static applied loads (thus, allowing thermal expansion) but become stiff under dynamic loads that might occur during an earthquake. Accordingly, the system is coupled to the wall under seismic loading. 

Seismic design basis for the main coolant loop piping and pumps, and for typical category I piping, e.g., the auxiliary feedwater line. 

Method of seismic analysis and any limiting results or typical itructural calculations for seismically qualified equipment, a) Typical large exterior tank and three small interior tanks, b) Three different pumps, c) Valves. 

Improved feedwater reliability via two independent sources of high pressure auxiliary ieedwater, one seismically qualified, the other uses an auxiliary diesel-driven pump to cope with LOOP... 

There are a number of equipments and technologies vdiich require R D work for implementation to KALIMER. To name a few, the submerged EM pump, a seismic isolator, high temperature structures, metal friel, passive Curie point shutdown system, and a steam generator. R D work for all of these items require massive investment to the facility and it is desirable to carry out the selected R Ds through an international collaboration if possible. The international collaboration in the systems engineering and methodology development is also needed to support the domestic efforts of Korea for KALIMER development. 

Dynamic and seismic qualification testing and analysis of the electrical equipment listed in CESSAR-DC Appendix 3.11B are addressed in CESSAR-DC Section 3.10 except for pump motors and valve motor operators, which are addressed in CESSAR-DC Section 3.9.2.2. The tests and analyses are performed in accordance with IEEE Std 344-1987 (Reference 9), which is endorsed by Regulatory Guide 1.100. 

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