ML20003D997
| ML20003D997 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/20/1981 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Gary R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| References | |
| NUDOCS 8104010828 | |
| Download: ML20003D997 (9) | |
Text
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UNITED STATES E
NUCLEAR REGULATORY COMMISSION gV C
WASHINGTON. D. C. 20555 e
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Docket Nos. 50-445 4. (.[j/ Ah s; MAR 2 01981 e/
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and 50-446 r2 Sq u.s m ~o ~ 198j g z Q
'NINWroer Q Mr. R. J. Gary
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Executive Vice President and cu V
General Manager Texas Utilities Generating Company 2001 Bryan Tower Dallas, Texas 75201
Dear Mr. Gary:
SUBJECT:
REQUEST FOR INFORMATION CONCERNING EQUIPMENT QUALIFICATION FOR SEISMIC AND HYDRODYNMIC LOADS FOR COMANCHE PEAK In order to meet the operating license review schedule established for your facility, we request that you respond to the enclosed request for additional information as soon as possible.
The Seismic Qualification Review Team's (SQRT) tentative schedule shown below is based upon receipt of your complete and thorough response to the enclosed request one month before the planned site visit.
In accordance with the procedure described under item 6 of the enclosure, we plan to select the equipment to be reviewed within one week of receipt of the applicants submittal.
The schedule would then require you to provide the " Qualification Sumary of Equipment" for the selected equipment within one week (or two weeks before the site visit).
Tentative Review Schedule Applicant SQRT Response to Si te Complete Input RFI Visit to SER Comanche Peak 4/3 5/4 - 5/8 5/22/81 We request that you advise us as soon as possible if you can support this schedule since a change will impact our schedules 'ar other plants.
8104010828
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i Mr. R. J. Gary h!!iR 2 0 lg81 Since we are conducting these reviews with the assistance of the national labs,. we request that one copy of all responses to the enclosed request be sent directly to:
Dr. Morris Reich Department of Nuclear Energy Building 129 Brookhaven National Laboratory Upton, New York 11973 If we are to meet the above schedule it is essential that the labs receive your subnittals at the same time as the NRC staff.
Si ncerely, Eh';.n Robert L. Tedesco Assistant Director for Licensing Division of Licensing
Enclosure:
Request for Additional Infonnation cc w/ enclosure:
See next page
Mr. R. J. Gary Executive Vice President and General Manager Texas Utilities Generating Company
. 2001 Bryan Tower Dallas, Texas 75201 Nicholas S. Reynolds, Esq.
cc:
Debevoise & Liberman Mr. Richard L. Fouke 1200 Seventeenth Street Citizens for Fair Utility Regulation 1668-B Carter Drive Washington, D. C.
20036 Arlidgton, Texas 76010 3.
Spencer C. Relyea, Esq.
Worsham, Forsythe & Sampels Resident Inspector / Comanche Peak 2001 Bryan Tower Nuclear Power Station Dallas, Texas 75201 c/o U. S. Nuclear Regulatory Commission P. O. Box 38 Mr. Homer C. ScFaidt Glen Rose, Texas 76043 Manager - Nuclear Sarvices Texas Utilities Services, Inc.
2001 Bryan Tower Dallas, Texas 75201 Mr. H. R. Rock Gibbs and Hill, Inc.
393 Seventh Avenue New York, New York 10001 Mr. A. T. Parker Westinghouse Electric Corporation P. O. Box 355
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Pittsburgh, Pennsylvania 15230
. David J. Preister Assistant Attorney General Environmental Protection Division
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P. 0. Box 12548, Capitol Station ~
kb Austin, Texas 78711 Mrs. Juanita Ellis, President 3
Citizens Association for Sound i'
Energy M'
,1426 South Polk
_g Dallas, Texas 75224 si Geoffrey M. Gay, Esq.
T West Texas Legal Services
' 100 Main Street (Lawyers Bldg.)".
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.'.FortWorth,l Texas 76102 ".
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l Equipment Qualification Branch Seismic Qualification Review Team Request for Additional Information 1.
In accordance with the requirements of GD0 2 and 4 all safety-related equipment is recuired to be designed to withstand the effects of earth-quakes and dynanic loads from normal operation, mai.ntenance, testing and postulated accident conditions.
GDC 2 further requires that such equipment be designed to withstand appropriate combinations of the effects of normal and accident conditions with the effects of earth-quake loads.
The criteria to be used by the staff to determine the acceptability of your equipment qualification program for seismic and dynamic loads are IEEE Std. 344-1975 as supplemented by Regulatory Guides 1.100 and 1.92, and Standard Review Plan Sections 3.9.2 and 3.10.
State the extent to which the equipment in your plant meets these requirements and the above requirements to combine seismic and dynamic loads. For equipment that does not meet these requirements provide justification for the use of other criteria.
2.
Provide a list of all safety-related systems together with a list of all safety-related equicment and support structure: associated witn each system. The equipment lists should indicate whether the equip-ment is NSSS sunnlied or RI)P sunnlied. These lists should include all safety-related mechanical ccmponents, electrical, instrumentetton, and control equipment, including valve actuators and other appurtenances of active pumps and valves.
3.
For each safety-related equipment item, the following information should be provided:
(1) Method of qualification used:
a) Analysis or test (indicate the company that prepued the report, the reference report number and date c' the publi-cation).
b)
If by test, describe whether it was a single or multi-frequency test and whether input was single axts or multt-axis.
c) If by analysis, describe whether static or dynamic, single or multiple-axis analysis was used.
d) Provide natural frequency (or frequencies) of equipment.
(2) Indicate whether the equipment has met the qualification requirements.
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(3)
Indicate whether the equipment is required for:
a) hot stand-by b) cold shutdown c) both d) neither r
(4) location of equipment, i.e., building, elevation.
(5) Availability for inspection (Is the equipment already installed at the plant site?)'
(6) A compilation of the rMuired response spectre (or time history) and corresponding damping for each seismic and dynamic load specified for the equipcent togecher with all other loads considered in the qualification and the method of combining all loads.
4 Identify all equipment that m,sy be effected by vibration fatigue cycla
- effects and describe the methods and criteria used to qualify tnis equipment for such leading conditions-5.
Describe the results of any in plant tests, such s in situ impedance tests, and any plans for operational tests whicn will be used to confirm the qualification of any item of equipment.
6.
To confirm the extent to which the safety &related equipment meets the requirements of General Design Criterion 2 and 4, the Seismic Qualifi-cation Review Team (SQRT) will conduct a plant site review.
For selected equipment, SQRT will review the combined required response spectra (RRS) or.the combined dynamic response, examine the equipment configuration and mounting, and then determine whether the test or analysis which has been conducted denonstrates compliance with the RRS if the equipment was qualified by test, or the acceptable analytical criteria if qualified by analysis.
The staff requires that a " Qualification Summary of Equipment" as shown on the attached pages be prepared for each selected piece of equipment and submitted to the staff two weeks prior to the plant site visit. The calicant should make available at the plant site for SQRT review all the pertinent documents and reports of the qualification for the selected equipnent.
After the visit, the applicant should be prepared to submit certain selected documents and reports for further staff review.
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.s Qualification Summary of Ecuicmen:
I.
Plant Name:
Tyoe:
1.
Utility:
PWR 2.
NSSS:
3.
A/E:
BWR II. Comoonent Name 1.
Scope: [ ] NSSS
[ ] BOP 2.
Model Number:
Quantity:
3.
Vendor:
4.
If the component is a cabinet or panel, name and cocal No. of:he devices included:
5.
Physical Description a.
Appearance b.
Dimensions c.
Weight 6.
Location: Building:
Elevation:
7.
Field Mouriting Conditions [ ] Bolt (No.
, Size
)
[] Weld (Leng:n
)
[ -]
, 8.
a.
System in wnich located:
b.
Functional
Description:
c.
Is the equipment required for [] Hot Standby [] Coltshutccwn
[] Both
[] Nerder 9.
Pertinent Reference Design Specifications:
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-2 III. Is Equipment Available for Inspection in the Plant: [] Yes
[] No IV. Equipment Qualification Method:
[ ] Test
[ ] Analysis
[ ] Combination of Test and Analysis Qualification Report *:
(No., Title and Date)
Company that Prepared Report:
Company that Reviewed Report:
V.
Vibration Input:
1.
Loads considered:
- a. [ ] Seismic only
- b. [ ] Hydrodynamic only
- c. [ ] Combination of (a) and (b) 2.
Method of Combining RRS: L ] Absolute Sum [ ] SRSS
[]
3.
Required Response Spectra (attach the graphs):
totner, specuyj 4.
Damping Corresponding to RRS: OBE SSE 5.
Required Acceleration in Each Direction: [ ] IP A
[ ] Other
(?pecif9]-~~
OBE S/S =
F/B =
V=
SSE S/S =' ~ - ".'..~. "...... F/B =- - ' "_
__~..". "...-".'.V ='-~~-~~
6.
Were fatigue effects or other vibration loads considered?
[]Yes
[ ] No l'f yes, describe loads considered and how they were treated in overall qualification program:
- NOTE:
If more than one report complete items IV thru VII for eacn rescrt.
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. VI.
.I.f Qualific.at.io.n by Te.s.t. _the.n Comple.t.e*_:
ranccm 1.
[ ] Single Frequency
[ ] Multi-Frequency: [ ] sine beat
[]
2.
[ ] Single Axis
[ ] Multi-Axis
~" " ~~'-
3.
No. of Qualification Tests: OBE SSE Other 4.
Frequency Range:
S.
Natural Frequencies in Eacn Direction (Sice/ Side, Front /Back, Vertical):
S/S =
F/B =
V=
6.
Method. of Determining Natural Frequencies
[ ] Lab Test
[ ] In-Situ Test
[ ] Analysis 7.
TRS enveloping RRS using Multi-Frequency Test [ ] Yes (Attacn TRS & RRS grasns
[ ] No 8.
Input 9-level Test: OBE S/S =
F/B =
Y=
SSE S/S =
F/B =
Y=
9.
Laboratory Mounting:
1.
[ ] Bolt (No.
Size
) [ ] Wald (Leng:n
) []
- 10. Functional operability verified:
[ ] Yes [ ] No
[ ] Nct Applicaole
- 11. Test Results including modifications made:
12.
Other test performed (such as aging or fragility test, including results):
k
- Not e:
If qualification by a combination of test and ar.alysis also cct;1ete Item VII.
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4 VII. If Qualification by Analysis, then complete:
1.
Method of Analysis:
[ ] Static Analysis
[ ] Equivalent Static Analysis
[ ] Dynamic Analysis:
[ ] Time-History
[ 3 Response Spectrum 2.
Natural Frequencies in Each Direction (Side / Side, Front /Back, Vertical):
S/S =
F/B =
V=
3.
Model Type: [ ] 3D
[ ] 20
[ ] 10
[ ] Finite Element
[ ] Beam
[ ] Closed Form Solutic 4.
[ ] Cocputer Codes:.....................................................
Frequency Range and No. of modes considered:
[ ] Hand Calculations 5.
Method of Combining Dynamic Responses: [ ] Absolute Sun [ ] SRSS
[ ] Other:
z);g777).............-
6.
Basis for the damping used:
7.
Support Considerations in the model:
l 8.
Critical Structural Elements:
Governing Load or Response Seismic Tctal St ress A.
.I. den t.i fi cat.i o.n L
...........oc.at.i o.n..C..o.mb..i n a.t.i on......S.t.re.s s.....S t re.s.s Allow bl
........a...e B.
Nax. Critical Maximum Allowable Deflection to Assure Functional Opera-
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b3bAbb90
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