ML20057A712
| ML20057A712 | |
| Person / Time | |
|---|---|
| Site: | 05200001 |
| Issue date: | 09/10/1993 |
| From: | Tang C GENERAL ELECTRIC CO. |
| To: | Poslusny C Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9309150192 | |
| Download: ML20057A712 (2) | |
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SCP 10 '93 09:4 M" G E flVCLEAR BLEG.7 P.2/2 23A6 WO Rev. 2 ABWR Standard Safety Analysis Report (2) Continuing Leak Reduction-establish and implement a program of preventive maintenance to reduce leakage to as-low-as-practicallevels. This program shall include periodic integrated leak tests at intervals not to exceed each refueling cycle.
Response
Leak reduction measures of the ABWR Standard Plant include a number of barriers to containment leakage in the closed systems outside the containment. These closed systems include:
(1) Residual Hea; Removal (2) High Pressure Core Flooder (3) Low Pressure Core Flooder (4) Reactor Core Isolation Cooling (5) Suppression Pool Cleanup (6) Reactor Water Cleanup (7) Fuel Pool Cooling and Cleanup (8) Post-Accident Sampling (9) Process Sampling (10) Containment Atmospheric Monitoring (11) Fission Product Monitor (part of LDS) 1 i
Plant procedures will prescribe the method ofleak testing these systems. The testing will be performed on a schedule appropriate to 10CFR50 Appendixj type B and C penetntions (i.e., at each refueling outage). When leakage paths are discovered, including during these tests, they will be investigated and necessary maintenance will be performed to reduce leakage to its lowest practicallevel.
In addition, lines which penetrate the primary containment are equipped with inboard and outboard isolation valves that are desigaed in accordance with GDC 55,56 and 57 to provide reliable isolation in the event of a line break or leakage. The containment isolation provisions are discussed in detail in Subsection 6.2.4, which also identifies all the system lines that penetrate the containment, together with their respective isolation valves.
s 1A 32 Response to TMIRelated Matters - Amendment 32
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