ML19339A896
| ML19339A896 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 07/13/1977 |
| From: | Caphton D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| Shared Package | |
| ML19339A891 | List: |
| References | |
| NUDOCS 8011050656 | |
| Download: ML19339A896 (1) | |
See also: IR 05000029/1977011
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UNITED STATES
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NUCLEAR REGULATORY COMMisstON
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REGION 1
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631 P ARK AVENUE
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KING OF PRLJ$$1 A, PENNSYLVANI A 19406
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JUL 131977
liEMORAllDU!1 FOR:
K. V. Seyfrit, Assistant Director for Technical
Programs, IE:HQ
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THRU:
E. J. Brunru r/ Chief, Reactor Operations and fluclear
Support Branch, Region I, IE
FRO:1:
D. L. Caphton, Chief,I!uclear Support Section ?!o. 1,
RO&flS Branch, Region I, IE
SUBJECT:
YAtiKEE R0WE CILRT (AITS F14566H2)
REFEREl;CE:
Region I Inspection Report 50-29/77-11
Section 2 of the referenced inspection report discusses the CILRT recently
conducted at Yankee Rowe.
Despite the apparent low value of the mass
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point leakage (0.0094%/ day), the acceptability of the test remains in
question as a result of improper system lineups and insufficient mass
injected into containment during the pump back supplemental verification
test. The licensee intends to perform Local Leak Rate Tests and make
Type C corrections to the Type A test to correct for the improper valu
lineups. These will be reviewed upon submittal of his report.
Region I
has issued a flotice of Violation for the verification test but recommends
that this not be a cause for rejection of the test results.
Preliminary
analyses of the pump back data indicate close agreement (5% of maximum
aliowable leakage over 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) between the metered values and those
measured with the CILRT instrumentation.
It is requested that IE Head-
quarters concur with this recommendation.
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O. L. Caphton, Chief
t!uclear Support Section i:o.1
C0lTACT:
J. C. Higgins
(488-1346)
Enclosure:
Region I Inspection Report 50-29/77-11
cc w/ encl:
J. H. Sniezek, Assistant Director
for Field Coordinator, IE:HQ
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