ML20116D376
| ML20116D376 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 10/30/1992 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20116D371 | List: |
| References | |
| NUDOCS 9211050347 | |
| Download: ML20116D376 (2) | |
Text
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Docket No.
50-336 B14278 fi
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'Attachn.ent 1 L
Millstone Nuclear Power Station,' Unit No. 2,
Previously Proposed Revision toTechnical Specifications Containment Structural Integrity Resoonse to Reauest for Additional Information s
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e QBTAINMENT SYSTEMS SURVEILLANCE RE0VIREMENTS (continuedi x n:
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Removing one wire from a dome, a vertical and a hoop tendon checked for lift off force pursuant to Specification 4.6.16.1.a and determining that over the entire length of the removed wire that:
1.
-The tendon wires are tree of corrosion.
2.-
There are no changas in physical appearance of the sheathing filler grease.
-3.
A minimum Lensile strength of 11,760 pounds for at least three wire samples (one from each end and-one at mid-length) cut from each removed wire.
Failure of any one of the wire samples to meet the minimum tensile strength test is evidence of abnormal degradation of the containment structure.
.4.6.1.5.2 -End Anchoraces and Adlacent Concrete Surfaces The structural integrity of the end anchorages and adjacent-concrete surfaces shall be idemonstrated by determining through inspection that no apparent changes or degradation has occurred in the visual appearance of the end anchorage
- concrete exterior surfaces or as indicated by the concrete crack patterns adjacent to the end anchorages. Inspections of the concrete shall be performed concurrent with the containment terdon surveillance (reference Specification 4.6.1.6.1).
-4.6.1.6.3 Liner plate.The structural integrity of.the containment liner plate.shall be determined during the shutdown for each Type A containment
-leakage rate test (reference Specification 4.6.1.2) by a visual inspection of the plate and verifying no apparent changes in appearance or other abnormal
, degradation; 4.6.1.6.4.LRecorts In lieu of any other report required by Specification 6.6.1, an _ initial report of any abnormal' degradation of the containment structure detected during the above required tests and inspections shall be made-within 10 days after completion of the surveillance requirements of this
- specification and the detailed reprt shall be submitted pursuant to
. Specification'6.9.2 within 90 days after comp?ction. This report shall include a description of the' condition of the :oncrete (especially at tendon anchorages), the inspection procedure, the tolerances on cracking, and the corrective actions taken, i
- MILLSTONE - IHIT 2 3/4 6-11 Amendment No. JJJ 00TO b
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