3F0990-13, Proposed Tech Specs Re Snubber Insp Schedule
| ML20064B458 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 09/28/1990 |
| From: | FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML20064B457 | List: |
| References | |
| 3F0990-13, 3F990-13, NUDOCS 9010170010 | |
| Download: ML20064B458 (2) | |
Text
5FT=;g
..mc n...
~
TA8LE 4.7.
2'
'd-HYDRAULIC SNUB 8ER INSPECTION SCHEDULE r-E NEXT REQUIRED h.
NUMBER OF SNUBBERS'FOUND INOPERABLE-INSPECTION INTERVAL **
DURING INSPECTION-OR DURING-INSPECTION INTERVAL (*)
C 18 months 25%
- izi 0
12 months 25%
1 6 months 25%.#
2 124 days i 25%
3 or 4 5, 6, or 7 62 days 25%:
Greater-than or equal to 8
-31 days 25%
?
M Snubbers may be categorized-into two groups, " accessible" and " inaccessible". This categorization shall be based o
upon the snubber's accessibility for inspection during reactor operation. These two groups may be inspected independently according;to the above schedule.
o* The required inspection interval shall not be jengthened more than one step at a time.
y
- The specified six month frequency may be waived until the end of mid-cycle outage (1991).
m 5.
5 E
af 5
l 9010170010 900928 PDR ADOCK 05000302 P
PDC x
$H0LLY EVALUATION.0F: REQUEST:
Florida' Power Corporation has reviewed = the requirements of 10CFR50.92 as they.
relate to the proposed change to the snubber visual inspection requirements and-considers the proposed change not to involve a significant hazards consideration.
In~ support of this conclusion the following analysis is provided:
- 1. The proposed change will not significantly increase the probability or consequences of an accident previously evaluated because the bulk of the support systems-(e.g., rigid restraints, other snubbers, etc.) remained intact. The - support components and structures are very conservatively designed;-typically one failure on a particular line will not produce loads in excess of code allowable for appropriate load combinations.
Snubbers are generally provided for seismic loading which is very unlikely in peninsular Florida.
- 2. The proposed change will not create the possibility of a new or different kind of accident from any accident previously evaluated because the change will not alter plant configuration or change-parameters governing normal plant operation.
- 3. The proposed change will not. involve a significant reduction to the margin of safety because the requirements to visually inspect 100% of the snubber population along with the required functional testing of safety-related. snubbers. will continue to provide adequate assurance that the.
snubber system will continue to be fully capable of performing its intended safety function, a
. 11