ML20053A303
| ML20053A303 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 05/19/1982 |
| From: | ILLINOIS POWER CO. |
| To: | |
| Shared Package | |
| ML20053A297 | List: |
| References | |
| PROC-820519, NUDOCS 8205250187 | |
| Download: ML20053A303 (12) | |
Text
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CLINTON POWER STATION UNIT-1 EQUIPMENT SEISMIC ASSESSMENT PROGRAM FOR SAFETY-RELATED p1ECHANICAL & ELECTRICAL EQUIPMENT l
MAY 19,1982 8205250187 820519 PDR ADOCK 05000461 A
EQUIPMENT ASSESSMENT PROGRAM I.
INTRODUCTION II.
APPLICABLE CODES, STANDARDS, REGULATORY GUIDES &
SECTIONS OF SRP III.
METHODOLOGY IV.
ELECTRICAL-EQUIPMENT ASSESSED V.
MECHANICAL-EQUIPMENT ASSESSED VI.
APPENDICES A.
COMPARISON OF SSE REVISED RESPONSE SPECTRA WITH THE TE T RESPONSE SPECTRA FOR CRITICAL ELECTRICAL EQUIPFENT B.
CRITICAL MECHANICAL-EQUIPMENT SERVICE LEVEL C STRESS COMPARISON WITH SERVICE LEVEL C STRESS ALLOWABLE VALUES C.
SEISMIC INSPECTION DATA SHEET i
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I.
INTRODUCTION j
This equipment assessment program is in response to the ACRS comment on Clinton Power Station Unit 1 which stated that " specific attention should be given to the seismic capabilities of the emergency AC power supplies, the DC power supplies, and small components such as actuators and instrument lines that are part of the decay heat removal system'.'
This assessment will consist of:
(1) an evaluation of the seismic. capabilities of the electrical f
and mechan'ical equipment for these systems for the SSE response spectra based on the soil springs in the dynamic SSI model, (2) field inspection of small components and lines to identify component configurations susceptible t.o failure under seismic loadings and nearby equipment hazards.
II.
APPLICABLE CODES, STANDARDS, REGULATORY GUIDES &
SECTIONS OF SRP Applicable addenda of ASME Codes-Section III, VIII, &
XI (addet7 a determined from date of issue of purchase d
a specification)
IEEE Std. 344-1975 Reg. Guides 1.48, 1.61, 1.92 & 1.100 SRP Sections 3.9.2, 3.9.3 & 3.10 III. METHODOLOGY (cont'd.)
C.
General review of small piping (2" and under) for the previously listed mechanical systems to assure that the following potential problem areas are adequately supported:
1)
Lumped masses attached to lines with the center of gravity located at distances greater than one foot from the lines, ii)
Inadequately supported lines, iii) Disproportionately large lumped masses in lines, iv)
Any other anomalies s
Inspection'results will be documented on the form pro-vided in Appendix C and evaluated as appropriate.
Problems found with an equipment configuration will then be investigated on similar configurations of re-dundant divisions or equipment trains.
That portion of the field inspection program which will address the review of component surroundings will be carried out as a part of the systems interaction program curdently underway.
III.
METHODOLOGY The seismic assessment program will consist of a com-
-bination analytical calculations and field inspection.
The analytical aspect of the program will compare the component stress level resulting from the revised seismic response spectra (See Appe'ndix A)_ to the maximum allowable stress level for which the components are qualified.
The specific components which will be in-cluded in this analysis are listed in Parts IV and V.
An example of how the results of this analysis will be tabulated is provided in Appendix B.
Thefielj.inspectionaspectoftheprogramwillcon-sist of' field inspections of limited safety-related components and their surroundings for the following systems:
A.
Typical components for one equipment train in the shutdown service water system.
B.
Typical components for one equipment train of the residual heat removal system-shutdown cooling mode.
C.
Typical components for one division of onsite AC and DC power systems.
Thepurpokeofthefieldinspectionwillbeasfollows:
A.
Review major component configuration to assure that small lines supplied with the equipment are ade-quately supported.
B.
Review major component surroundings to determine if nearby components are fabricated, located or restrained in such a manner so as not to pose a hazard during a seismic event. __
~
i IV.
ELECTRICAL EQUIPMENT TO BE ASSESSED
~
ITEM EQUIP. NO.
LOCATION AC POWER SYSTEMS j
6900V Switchgear 1AP06E Aux. Bldg., 762'-0" Assemblies i
4160V Switchgear
-1AP06E Aux. Bldg., 7 62'-0" Assemblies 480V Unit Substations IAP11E Aux. Bldg., 781'-0"
]
480V MCC's IAP27E Aux. Bldg., 762'-0" l
DC POWER SYSTEMS 125V DC MCC and 1DC13E Aux. Bldg., 781'-0" Distribution Panel /
Batteries & Racks 1DC01E Aux. Bldg., 781'-0" Battery Chargers 1DC06E Aux. Bldg., 781'-0" Inverters IC71-S001A Control Bldg., 781'-0" i
V.
MECHANICAL EQUIPMENT TO BE ASSESSED i
j DIESEL GENERATOR SYSTEM Diesel Generator IDG01KA Diesel Gen. Bldg.,
737
-0"
]
Auxiliary Lube System Piping Filters Fuel Storage & Supply Engine Cooling Water Heat Exchangers Oil Coolers i
Air Start Control Panels
{
Local Control Panels 1
1.
V.
MECHANICAL EQUIPMENT TO BE ASSESSED (cont'd.)
DECAY HEAT SYSTEM (RHR)
Pump 1E12-C002A Aux. Bldg., 707'-6" Heat Exchanger 1E12-B001A Aux. Bldg., 707'-6" SHUTDOWN SERVICE WATER SYSTEM Strainer 1SX01FA Circ. Water Screen j
House Pump ISX01PA Cire. Water Screen House Instrument Panel 1SX11J Circ. Water Screen House i
a P
APPENDIX A COMPARISON OF SSE REVISED RESPONSE SPECTRA WITH THE TEST RESPONSE SPECTRA FOP, ELECTRICAL EQUIPMENT i
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MECHANICAL EQUIPMENT SERVICE LEVEL C STRESS COMPARISON WITH SERVICE LEVEL C STRESS ALLOWABLE VALUES MAX. STRESSED REVISED STRESS ALLOWABLE RATIO OF EQUIPMEIrr BLDG,/ELEV.
COMPONENTS
_ LEVEL (ksi)
STRESS REVISED / ALLOWABLE i
DIESEL AUX. BLDG./
ROTOR & SHAFT 3.0 27.0
.11 GENERATOR 73'/'
STATOR 8.4 27.0
.31 HEAT EXCHANGER
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APPENDIX C SEISMIC INSPECTION SYSTEM / COMPONENT DATA SHEET DATE INSPECTOR SKETCH OR DESCRIPTION OF ITEM'(INCLUDING APPROXIMATE DIMENSIONS & MASSES)
REVIEW / ANALYSIS RESOLUTION BY DATE APPROVAL /CLOSE0UT BY~
DATE I ;