ML17305B120

Proposed Tech Specs Changes Extending Performance Intervals for Steam Generator Eddy Current Exam to End of Present Fuel Cycle

ML17305B120
Person / Time
Site:	Palo Verde
Issue date:	10/06/1990
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17305B119	List: ML17305B118 ML17305B120
References
NUDOCS 9010230288
Download: ML17305B120 (2)

Text

REACTOR COOLANT SYSTEMS SURVEILLANCE RE UIREMENTS (Continued) 4.4.4.3 Ins ection Fre uencies-The above required inservice inspections of steam generator tubes shall be performed at the following frequencies:

a.The first inservice inspection shall be performed after 6 Effective Full Power Months but within 24 calender months of initial crit-icality.Subsequent inservice inspections shajg be performed at intervals of not less than 12 nor more than 24Fcalendar months after the previous inspection.

If two consecutive inspections following service under AVT conditions, not including the preservice inspection, result in all inspection results falling into the C-1 category or if two consecutive inspections demonstrate that previously observed degradation has not continued and no additional degradation has occurred, the inspection interval may be extended to a maximum of once per 40 months.b.If the results of the inservice inspection of a steam generator conducted in accordance with Table 4.4-2 at 40 month intervals fall into Category C-3, the inspection frequency shall be increased to at least once per 20 months.The increase in inspection frequency shall apply until the subsequent inspections satisfy the criteria of Specification 4.4.4.3a.;

the interval may then be extended to a maximum of once per 40 months.C.Additional, unscheduled inservice inspections shall be performed on each steam generator in accordance with the first sample inspection specified in Table 4.4-2 during the shutdown subsequent to any of the following conditions:

1.Primary-to-secondary tubes leaks (not including leaks originating from tube-to-tube sheet welds}in excess of the limits of Specification 3.4.5.2.2.A seismic occurrence greater than the Operating Basis Earthquake.

3.A loss-of-coolant accident requiring actuation of the engineered safeguards.

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