ML20244D778

Provides Guidance on Methods for Containment Integrated Leak Rate testing.Point-to-point & Total Time Methods Only Acceptable Methods Approved by Staff.Mass Point Method May Be Used on Interim Basis

ML20244D778
Person / Time
Issue date:	04/01/1986
From:	Eisenhut D Office of Nuclear Reactor Regulation
To:	Partlow J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML20244D710	List: DD-87-02, Informs That Secy Received Ltr from Professor Z Reytblatt Requesting Review by Commission of Directors Decision DD-87-02.On Advice of Ofc of General Counsel,There Is No Adjudicatory Prohibition in Circulating Professor Ltr ML20244D708 ML20244D778 ML20244E095 ML20244E482 ML20244E507 ML20244E518 ML20244E520 ML20244E526 ML20244E529 ML20244E533 ML20245A325 ML20245A347 ML20245A352 ML20245A357 ML20245A360 ML20245A364 ML20245A369 ML20245A371 ML20245A381 ML20245B280 ML20246M232
References
TAC-52665, NUDOCS 8604110058
Download: ML20244D778 (2)

Text

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Ret. 2 I- *.-

James G. Part1rv, Director Division of" Inspection Programs MEN)RANDUM FOR:

0f fice of Inspection and Enforcement Darrell G. Eisenhut, Deputy Director Of fice of Nuclear Reactor Regulation FROM.

IDAN t CONTA1W,ENT INTEGRATED LEAK RATE TEST!NO (

$UBJECT:

ON TE5ilHO METHODS 986, there appears to be a As indicated in yeer memorandum dated February ptable CILRT methods associated Appendix J which have been approved to date.necessary to review h

Appendix J, Section 711. A.3(a), are that all CILRT5 l Standard (ANSI) requirements.

accordance with the provisions of the American NationaThis acceptable methods related to leak rate computation.

These are the only acceptable methods officially N45.4-1972...".

In 1981, ANS!/ANS-56.8 was issued with the intent and the " Total Time" methods.

This proposed The staf f has not approved this revision.

approved by the staff.

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new standard has been considerably expanded an replace N45.4-1972.

i t" method One of the changes is the introduction of the " sass po n associated with a minimum test duration of B hours.

staff has taken two

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version.

h Based on the introduction of the " sass point" sethod, t eThe firs The staff believes that parallel approaches towards implementation.

be used in the interir, d

until the more formal review process is complete.t provided the CILRT duration is at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Testing", is k

Draf t Regulatory Guide M5 021-5, " Containment System Lea currently under internal review along with propose better stabilization d for this sinism The approach in this draf t guide would eliminate the neeThe of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> duration f or the C]LRT on the basis that er, are uncertain.

criteria would be developed for future tests.

of both the draf t guide and Appendix J revision tion of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> "eass point" sethod.

should be applied for CILRT evaluations utilizing the

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