ML20105B206
| ML20105B206 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 09/11/1992 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20105B200 | List: |
| References | |
| NUDOCS 9209180229 | |
| Download: ML20105B206 (3) | |
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PBAPS Unit 3 LIST OF TABLES Table Title Page 4,8.3.c Maximum Values for Minimum Detectable 216d-6 3
Levels of Activity
.4.11.0-1 Snubber Visual Inspection Interval 234t-c 3.14.C.I Fire Detectors 240n 3.15 Seismic Mon'toring Instrumentation 240u 4.15 Seismic Honitoring Instrumentation E10v Surveillance Requirements 6.2.1 Shift Crew Composition-Minimum 245 Requirements
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vii 9209180229 920911 DR ADOCK 05000277 PDR
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I PBAPS
'4.11 B'ASES B.
Emergency Heat Sink Facility The testing of the ESW Booster Pumps and the ECW pump is in accordance with existing ASME codes and applicable addenda except where relief has been granted and assures the required availability of the equipment.
I C.
Emerge.cy Shutdown-Control Panels Once per werk verification of the panels being properly secured is considered adequate. The assoc hted equipment is proven operable during surveillance testing of that equipment. An operability verification by electrical test at eact refueling outage is adequate to assure that the panels are available and can perform their design function.
D.
Shock Suppressors (Snubbers) on Safety Related Systems i
All safety related snubbers shall be, as a minimum, visually inspected to verify that (1) the snubber has no visible indications of damage or impaired operability, (2) attachments to the foundation or supporting structure are functional, (3) f asteners for the attachment of the snubber to the component and to the snubber anchorage are functional, and (4) proper hydraulic fluid level for hydraulic snubbers. Snubbers are categorized into two groups,
" accessible" or " inaccessible", based on their accessibility for inspection during reactor operation and drywell inertment. As discussed in Generic Letter 90-09, " Alternative Requirements for Snubber Visual Inspection Intervals and Corrective Actions", the method for determining the next interval for the visual inspection of snubbers is provided based upon the number of unacceptable snubbers found during the previous inspection, the total population or category size and the previous inspection interval. A i
snubber is considered unacceptable if it fails to satisfy the acceptance criteria ' the visual inspection. Snubbers may be categorized, based upon their accessibility during power operation, as accessible or inaccessible.
These categories may be examined separately or jointly.
Inspections performed before that interval has elapsed may be used as a new reference-point to determine the next inspection. However, the results of such early inspections will only be used to shorten the required interval and not to lengthen it.
l When a snubber is found inoperable an engineering evaluatica is performed to determine (a) snubber mode of failure and, (b) If there is any adverse effect or degradation on the supported piping or equipment due i..' the
-failure.
To further increase the assurance of snubber reliability, functional tests will be performed once each operating cycle.
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-236a-l
Unit 3 P8APS 4.11 BASES B.
Emergency Heat Sink Facility The testing of the ESW Booster Pumps and the ECl4 pimp is in accordance with existing ASME codes and applicable addenda except where relief has been granted and assures the required availability of the equipment.
C.
Emergency Shucdown-Control Panels Once per week verification of the panels being properly secured is considered adequate. ine associated equipment is proven operable during surveillance testing of that equipment. An operability verification by electrical test at each refueling outage is adequate to assure that the panels are available and can perform their design functic..
4 D.
Shock Suppressors (Snubbers) on Safety Related Systems All safety related snubbers shall be, as a minimum, visually inspected to verify that (1) the snubber has no visible" indications of damage or impaired operability, (2) attachments to the foundation or supporting structure are functional, (3) fasteners for the attachment of the snubber to the component and to the snubber anchorage are functional, and (4) proper hydraulic fluid level for hydraulic snubbers. Snubbers are categorized into two groups, "acces51ble" or " inaccessible", based on their accessibility for inspection during reactor operation and drywell inertment. As discussed in Generic Letter 90-09, " Alternative Requirements for Snubber Visual Inspection Intervais and Corrective Actions", the method for detemining the next interval for the visual inspection of snebbers is provided based upon the number of unacceptable snubbers found during the previous inspection, the total population or category size and the previous inspection interval. A snubber is considered unacceptable if it fails to satisfy the acceptance criteria of the visual inspection. Snubbers may be categorized, based upon l
their accessibility during power operation, as accessible or inaccessible.
I These categories may be examined separately or jointly.
Inspections perfomed before that interval has elapsed may be used as a new reference point to determine the next inspection. However, the results of such early inspections will only be used to shorten the required interval and not to lengt. hen it.
L' hen a snubber is found inoperable an engineering evaluation is performed to determine (a) snubber mode of failure and, (b) if there is any adverse effect or degradation on the supported piping or equipment due to the failure.
To further increase the assurance of snubber reliability, functional tests will be performed once each operating cycle.
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-236a-f..
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