Integrated test facility pdf

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Subscriber sign in You could not be signed in, please check and try again. Username Please enter your Username. Password Please enter your Password. Forgot password? Don't have an account? Sign in via your Institution. You could not be signed in, please check and try again. The preliminary ICE experimental facility cannot 2. These problems will also be difficult in Preliminary experiments have provided experi- the integrated test facility as well, but will be considered mental data to clarify the ICE and LOVA basic phenom- and reflected in designing of this facility.

The preliminary experimental facilities are valuable, but The integrated test will be performed to provide have several following limitations to get enough data for experimental data which are difficult to obtain from the validating the ITER safety analysis codes. For ex- It is important to evaluate condensation effect of ample, scaling effect on the transient time constant, re- the steam generated by the ICE into the suppression liable action of the suppression system, chemical pool. These experimental data related to the in-vessel transient events will be use- ful for validating the ITER safety analysis code.

The main objective of the integrated test is to in- vestigate the consequences of possible interaction of the ICE and the LOVA and to validate the analytical model of thermofluid events in the VV of the fusion reactor, as described in Section 5.

The pressure and temperature transient characteristics inside the VV, and the mobili- zation and release characteristics of accumulated dust in the VV are the parameters to be measured in the test.

The integrated test also aims to provide design data for reliable suppression system for mitigating the in-vessel pressure. Moreover, this test will evaluate the time to reach 0. Concept of integrated in-vessel thermofluid test facility.

Analysis for Designing the Integrated Test 4. Concept of the Integrated Test Facility Facility Figure 1 shows a concept of the integrated facility Several analyses are being conducted to optimize for the in-vessel thermofluid test. The facility is com- the design of the integrated test facility. Pressures in the posed of models of the VV, a suppression tank, a dust VV and the suppression tank of the full-scale ITER chamber, in-vessel components, water injection nozzles, model were calculated and compared with those of the rupture disks, and so on.

Two analyt- 36 m3 scale of that of the ITER VV, and is halfway ical models having a similar geometry were made and between the volume of the preliminary experiment and analyzed by using the TRAC code. Figure 2 shows the the ITER. Breach area of the water injection nozzles is analytical model. Total water the rupture disks in order to limit the internal pressure volume injected to the full-scale model is m3, and to 0. The breach area should be large enough to simulate the condensation of of the coolant pipe in the full-scale model is 0.

The rupture disks break Section 4. The integrated test facility will have the when the in-vessel pressure reaches to 0. The sup- break of multiple coolant pipes. Table I summarizes surized high temperature water to simulate the coolant these analytical conditions. The VV, the suppression tank, and Figure 3 compares time histories of pressure in the the dust chamber will be designed to endure internal VV and the suppression tank in the full-scale model.

The pressure of about 0. Time histories of pressure in the vacuum vessel and the Fig. Analytical model for the ICE simulation. Table I. Time histories of pressure in the vacuum vessel and the MPa at 10 sec. However, the maximum pressure in the VV is around 0. A cross-section of the vent pipe into the pool of the full- scale model has Thus, the condensation and pressure temperature data in the VV and the suppression tank suppression behavior in the full-scale model are different when the in-vessel cooling pipes are broken.

Therefore, the integrated ICE to LOVA test will evaluate the rate and quantity of the dust released to the outside of the VV will be used to validate the safety analysis codes and with the steam by selecting conditions such as the breach modeling.

It is important to verify the redundancy of a safety system even if one of the multiple safety 5. Advanced Safety Test elements fails to operate itself. For example, the sup- pression system must keep the requested performance The advanced safety test or the additional tests will even if one of the several rupture disks is not open.

In be performed to provide data needed for the ITER safety addition, the integrated test can perform a functional ex- examination and to validate the safety analysis codes for periment of the suppression system including malfunc- the ITER. This test will also obtain some data to evaluate tion of one of the rupture disks.

Test Schedule be released to outside in exchange for the incoming air. The LOVA test will be performed to measure how much Table II shows the temporary time schedule of the dust is released by selecting conditions such as the integrated in-vessel thermofluid test. The test facility breach size of VV or the in-vessel temperature.

The dust will be designed and manufactured from to mobilization and release characteristics are evaluated fiscal year. The ICE test will be performed from the end from this test, and can validate the values used in the of The advanced safety test mental data related to exchanging gases flow through the or the additional tests are expected to be performed since breaches of the VV, but provides the data related the fiscal year. The safety analysis codes such as mobile dust with the flow in a limited way.

Based on the results of the preliminary ICE and LOVA experiments, the integrated in-vessel thermofluid test is being planned and conceptual design of the facil- ity is in progress.

Ogawa, T. Kunugi, and Y. Fu- data needed to verify the safety analysis codes. For ex- sion Energy 12 : Ogawa and T.