ML19326B133
| ML19326B133 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 12/18/1974 |
| From: | US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML19326B128 | List: |
| References | |
| NUDOCS 8003060933 | |
| Download: ML19326B133 (2) | |
Text
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DAVIS-BESSE 1 1.
Under Section 4.15.2.3.2 of Section 16 (Technical Specifications),
the following penetrations should be included in the list of i
those penetrations which will be tested as potential bypass leak paths (penetration numbers correspond to those given in response to Q.6.2.23):
a.
Because multiple valves in series are no assurance of
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- non-leakage, include the following penetrations as potential bypass leak paths:
29, 49, 4'4A, 47A, 47B, 71C, 74C, 67, 69 b.
All penetrations which do not terminate in a treated region and have been, excluded from the list of potential bypass leak paths because they have double gasket seals' should be included in the list. Any leakage detected during tests, or the sensitivity of the test if zero leakage is detected, should be included in the bypass leakage, c.
The following penetrations should be included in the list of potential bypass leak paths or some provision should be made to assure that the pressure of the fluid in these lines will not drop below containment design pressure:
2, 18, 35, 36, 37, 38, 39, 40, 57, 58, 52, 53, 54, 55, 56 t
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In addition, all boundaries which interface with containment atmosphere and atmosphere outside the treated regions should be tested as potential bypass leak paths and that leakage (or'the test sensitivity if zero leakage is measured)i included in the bypass leakage fraction. Examples of such boundaries are guard pipes and the personnel locks. - -
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