B14430, Proposed TS 4.4.3.5(a) Re Insp Frequencies for SG Tubes
| ML20035F677 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/15/1993 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20035F676 | List: |
| References | |
| B14430, NUDOCS 9304220157 | |
| Download: ML20035F677 (4) | |
Text
s Docket No. 50-421 B14430 k
e Millstone Nuclear Power Station, Unit No. 3 Proposed Revision to Technical Specifications Steam Generator Surveillance Requirements Marked Up Pages of Technical Specifications i
April 1993 P
4 f0fd 3 ) klF,b
_RLACTOR C00LANI SYS11M 6
STEAM GFNERAIGRS SURVEILLANCE REQUIREMENTS (Continued)
L 4.4.5.3 Inspection Frequencies - The above required inservice inspections of steam generator tubes shall be performed at the following frequencies:
The first inservice inspection shall be performed after 6 Effective a.
Full Power Months but within 24 calendar months of initial criticality.
Subsequent inservice inspections shall be performed at intervals of not less than 12 nor more than 24 calendar monthsYafter the previous l
inspection.
If two consecutive inspections, not including the preser-vice 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 in 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 4.4.5.3a.; the interval may then be extended to a maximum of once per 40 months; and Additional, unscheduled inservice inspections shall be performed on c.
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 leak (not including leaks originating l
from tube-to-tube sheet welds) in excess of the limits of Specification 3.4.6.2, or l
I 2)
A seismic occurrence greater than the Operating Basis Earthquake, or 3)
A loss-of-coolant accident requiring actuation of the Engineered Safety features, or 4)
A main steam line or feedwater line break.
I g' except ih4+
the survei lance re\\cded to -the Genercdor insPdion, due no \\cdce %n stec>.m be do t erreo u d il %.c md c
/9aop st 2. l ) l9%-, 'M Jofer them 3 o scrt. 1977, r e m e %, m+ye Ac.hver is cArMer.
MILLSTONE - UNIT 3 3/4 4-16
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Docket No. 50-423 B14430 s
f4illstone Nuclear Power Station, Unit No. 3 Proposed Revision to Technical Specifications Steam Generator Surveillance Requirements Retyped Pages of Technical Specifications April 1993
)
1 h
ww REACTOR COOLANT SYSTEM STEAM GENERATORS l
SURVEILLANCE REQUIREMENTS (Continued)
Inspection Frecuencies - The above required inservice inspections of 4.4.5.3 steam generator tubes shall be performed at the following frequencies:
The first inservice inspection shall be performed after 6 Effective Full Power Months but within 24 calendar months of initial a.
criticality. Subsequent inservice inspections shall be performed at l intervals of not less than 12 nor more than 24 calendar months
- after the previous inspection.
If two consecutive inspections, 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; If the results of the inservice inspection of a steam generator b.
conducted in accordance with Table 4.4-2 at 40-month intervals fall in Category C-3, the inspection frequency shall be increased to at The increase in inspection frequency least once per 20 months.
shall apply until the subsequent inspections satisfy the criteria of Specification 4.4.5.3a.; the interval may then be extended to a maximum of once per 40 months; and Additional, unscheduled inservice inspections shall be performed on each steam generator in accordance with the first sample inspection c.
specified in Table 4.4-2 during the shutdown subsequent to any of the following conditions:
Primary-to-secondary tubes leak (not including leaks 1) originating from tube-to-tube sheet welds) in excess of the limits of Specification 3.4.6.2, or A seismic occurrence greater than the Operating Basis 2)
Earthquake, or A loss-cf-coolant accident requiring actuation of the 3)
Engineered Safety Features, or 4)
A main steam line or feedwater line break.
Except that the surveillance related to the steam generator inspection, due no later than August 21, 1993, may be deferred until the next refueling outage or no later than September 30, 1993, whichever is earlier.
MILLSTONE - UNIT 3 3/4 4-16 Amendment No.
0137
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