Review Article
International Standard Problems and Small Break Loss-of-Coolant Accident (SBLOCA)
Table 4
Main characteristics of the considered transient.
| ISP | Facility/plant | Test | Type | Secondary side | Emergency systems | Recovery | End of test | ident. | significant conditions | in primary side(*) | procedure | (s) |
| ISP 18 | LOBI | A2-81 | SBLOCA = 1% in cold leg | Imposed 100K/hr | HPIS in cold leg | Secondary
system feed and bleed | 4500 | ISP 20 | DOEL | SGTR 1979 | SGTR = 0.5(+)% of | EFW and steam
Relief valves active | HPIS in cold leg: pressurizer
sprays and heaters | ā | 3000 | ISP 22 | SPES | SP-FW-02 | LOFW-loss of feed water | Boildown of secondary side
and EFW active in one loop | Pressurizer PORV and
heaters | EFW in one loop | 8000 | ISP 26 | LSTF | SB-CL-18 | SBLOCA = 5% of | Steam relief valves active | Accumulators and LPIS in
cold leg | RHR actuation | 1000 | ISP 27 | BETHSY | 9.1.b | SBLOCA = 0.4% of | EFW and pressure control
active | Accumulators
and LPIS in cold leg | Depressurizarion of secondary side | 8000 |
|
|
(*)scram is assumed in
all cases following a low pressure signal. (+)rough evaluation
|