ML20031H537
| ML20031H537 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 10/07/1981 |
| From: | Youngblood B Office of Nuclear Reactor Regulation |
| To: | Delgeorge L COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8110280084 | |
| Download: ML20031H537 (11) | |
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CDnckWFD PDiBenedetto LB#1 Rdg Alee OCT 7 1981 DEisenhut BJYoungblood bcc:
KKiper TERA Docket Nos.: bO-l34
- lkene NRC/PDR and STN 50-455 MPashbrook L/PDR SHanauer NSIC RVollmer TIC Mr. Louis 0. DelGeorge TMurley ACRS (16)
Director of Nuclear Licensing Rfiattson Commonwealth Edison Company RHartfield, MPA Post Office Box 767 OELD Chicago, Illinois 60690 OIE (3)
MReich (BNL)
Dear Mr. DelGeorge:
ZRosztoczy
Subject:
Request for Additional Information for the Review of the Byron Station, Units 1 and 2 Regarding Seismic and Dynamic Qualification of Equipment As a result of our continuing review of the Byron /Braidwood FSAR, we find that we need additional information to complete our evaluation. The specific information required is in the area of seismic and dynamic qualification of equipment and is presented in the enclosure.
To maintain our licensing review schedule we will need responses to the enclosed request by January 7, 1982. The Seismic Qualification Review Team's (SQRT) scheduled site visit to Byron Station from February b 1982 to February 12, 1982 is based upon receipt of your complete and thorough responses to the enclosed request onemonth before the planned visit.
In accordance with the procedure described under Q271.2 of the enclosure, we plan to select the equipment to be reviewed within one week of receipt of your 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 thesitevisit).
If you cannot meet this date, please inform us within seven days after receipt of this letter of the date you plan to submit your responses so that we maj eview our schedule for any necessary changes.
Please contact the Byron Project Manager if you desire any discussion or clarification of the enclosed request.
N(Ml /q,/
Sincerely, biginni siimed by:
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B. J. Youngblood
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B.J.YoJngblood,Chiefh g
Licensing Branch No. 1 5,
f Division of Licensing
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Enclosure:
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4 Mr. Louis'0. Del George Director of Nuclear Licensing Commonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690 ces:
Mr. William Kortier Mr.-Edward R. Crass Atomic Power Distribution Nuclear Safeguards and Licensing Division Westinghouse Electric Corporation Sargent & Lundy Engineers P. O. Box 355 55 East Monroe Street Pittsburgh, Pennsylvania 15230 Chicago, Illinois 60603 Paul M. Murphy, Esq.
Nuclear Regulatory Commission, Region III Isham, Lincoln & Beale Office of Inspection and Enforcement One First. National Plaza 799 Roosevelt Road 42nd Floor Glen Ellyn, Illinois 60137 Chicago, Illinois 60603 Myron Cherry, Esq.
Mrs. Phillip B. Johnson Cherry, Flynn and Kar 1907 Stratford Lane 1 IBM Plaza, Suite 4501 Rockford,. Illinois 61107 Chicago, Illinois 60611' Professor Axel Meyer
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U. S. Ntclear Regulatory Commission Department of Physics Resident Inspectors Office Northern Illinois University 4448 German Church Road DeKalb, Illinois 60115 Cyron, IL 61010 C. Allen Bock, Esq.
P. O. Box 342 Urbanan, Illinois 61801 Thomas J. Gordon, Esq.
Waaler, Evans & Gorcon 2503 S. Neil Champaign, Illinois 61820 Ms. Bridget Little Rorem Appleseed Coordinator 117 North Linden Street
- Essex, Illinois 60935 Kenneth F. Levin, Esq.
l Beatty, Levin, Holland, Basofin & Sarsany 11 South LaSalle-Street Suite 2200 Chicago, Illinois 60603
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ENCLOSURE Request for Additional Information Seismic Qualification Review Team 271.0 EQUIPMENT QUALIFICATION BRANCH 271.1 In accordance with the requirements of GDC 2 and 4 all safety-related equipment is required to be designed to withstand the effects of earth-quakes and dynamic loads from normal operation, maintenance, testing and postulated accident conditions.
GDC 2 further requires that such equipment be designed to withstand appropriate combinations of the effects of nomal and accident conditions with the effects of earthquake 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, 3.9.3 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 justification will be needed for the use of other criteria.
To confirm the extent to which the equipment important to safety meets 271.2 the requirements of General Design Criterion 2 and 4, the Seismic Quali-fication 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 squipment configuration and mounting, and then determine whether the test or analysis which has been conducted demonstrates compliance with the RRS if the equipment was quali-fied by test, or the acceptable analytical criteria if qualified by analysis, In order to select equipment types for a detailed review it is necessary to 271.3 obtain a list of all equipment important to safety. Eo"ipment should be divided first by system then by component type. Attachment #1 shows a tabular format whi i should be followed to present the status summary of seismic and dynamic qualification of all equipment important to safety.
l Attachment #2 shows suggested categories of component type to be listed in Attachment #1.
Provide a complete set of floor response spectra identifying their applicability to the equipmei.t listed in Attachment #1, 7
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After the information on Attachment #1. is received, a selection will be made of the equipment to be. reviewed by the site audit. Specific infor-i mation on equipment selected for audit should be presented as shown on i
Attachment #3 which should be provided to the NRC. staff two weeks prior to the plant site visit. The applicant should make available at the plant site for SQRT review all the pertinent documents and reports of,.
i After the visit, the l
the qualification for the selected equipment.
applicant should be prepared to submit certain selected documents i
and reports for further staff review.
The purposc of the site audit is to confirm the acceptability of the seismic and dynamic qualification of all equipment important to safety based on the review of a few selected pieces.
If a number of lE a
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'd fi ic encies are observed or significant generic concerns arise, the e
i deficiencies should be removed for all equipment'important to safety subject to confirmation by a follow-up audit of randomly selected items before the fuel loading date..
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ATTACitMENT #1 SEISMIC AND DYNAMIC QUALIFICATION SUMMAF.= AND STATUS OF EQUIPMENT IMPORTMIT TO SAFETY PLANT NAME:
DOCKET NO.:
UTILITY:
FAE OF
'NSSS:
A/E:
SAFETY EQUIPMENT SUPPLIER LOCATION QUALIFICATION PLAN LOAD INPUT QUALIFICATI0rt NETit0D FLOOR RfMl; -
SYSTEM Codes &
SEISMIC Tl5T C6i4T W4T~ RESP.
ZPA FREQ SPECTRA NID RANE Stds.
HYDRC FtsiCTION OR I DENT.
STATUS DTN.
ANAL.
ID.
DYN-
.{Al TYPE CAPACITY QUANTITY NSSS BOP VENDOI
- BLDG, ELEY.
(B)
(C)
OBE iSE STAT OYN NO.
l i
n A.
FullCTIONAL MODE
_ B.
CENTIFICATION NO.,
R = RUN S = STARTUP/il0T STAND 0Y.
PURulASE ORDER ETC.
ItS
- ll0T SHUTDOWN, CS = COLD Sl!UTDOWN RF = REFUEL C.
STATUS:
C = COMPLETE, CN = QUALIFIED BUT NOT ON SITE. CE = QUALIFIED WITH EXCEPTION NC = NOT COMPLETE
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ATTACHMENT #2 EQUIPMENT CATEGORIES PUMPS:
MOTOR OR1VE TURBIllE DRIVE VALVES:
MOTOR OPERATED HYDRAULIC PNEUMATIC
' CHECK RELIEF FANS & DAl@ERS:
HANDLING & LIFTIflG EQUIPMENT:
ELECTRIC MOTORS:
GENERATORS:
ELECTRIC DIESEL MOTOR C0flTROL CENTERS:
SWITCH GEAR:
ELECTRICAL DISTRIBUTION EQUIPMENT POWER BUSES TRANS FORMERS BATTERY, RACKS IfiSTRUMENTATION AND CONTROLS:
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INSTRUMENT RACK COMPUTERS DISPLAYS GAGES SENSORS
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Soismic and Dynamic Qualification Summary of Equipment I.
Plant Name:
lYle:
1.
Utility:
PWR 2.
NSSS:
BWR 3.
A/E:
Other II.
Compoaent Name:
1.
Scope:
[
] NSSS
[ ] BOP
[ ] Ot'her 2.
Model Number:
Quantity:
3.
Size or Range:
4.
Vendor:
/
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5.
If the component is a cabinet or panel, name and model Number of the devices included:
6.
Physical
Description:
a.
Appearance:
b.
Dimensions:
c.
Weight:
7.
Location:
Building:
Elevation:
8.
Field Mounting Conditions
[ ] Bolt (No.
, Size
_)
[ ] Weld (Length
)
[ ]
9.
Mounting Orientation [e.g., on floor, cantilYvered,' suspended, etc.]
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10.
a.
System in which located:' -
b.
Functional Oescription:
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c.
Is the equipment required for [ ] Hot Standby [ ] Cold Shutdown I
[ ] Both
[ ] Neither
[- ] Other
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11.
Pertinent Reference Design Specifications for Qualification Recuirements:
a.
Seismic Input d.
Service Conditions b.
Hydrodynamic Load I put e.
Qualified Life c.
Fatigue Considerations.
III. Is Equipment Available for Inspection in the Plant:
[ ] Yes
[ ] No
[ ] Partial or limited availability IV.
Equipment Qualification Method:
[ ] Test
[ ] Analysis
[ ] Combination of Test and Analysis Qualification Report *: _
(No., Title and Date):
Company that Prepared Report:
Company that Rcviewed Report:
Where Report is filed or available:
V.
Vibration Input:
1.
Loads considered:
a.
[ ] Seismic only i
b.
[ ] Hydrodynamic only c.
[ ] Vibration from normal operation d.
[ ] Combination of (a), (b), and (c) 2.
Method of Combining RRS:
7
[ ] Absolute Sum
[ ] SRSS
[ ]
(other, specify) 3.
Required Response Spectra ** (attach the graphs):
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NOTE:
6:'
^1f more than one report complete items IV thru VII for each report.
- If other than RRS is used, describe method..
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4.
Damping Corresponding to RRS:
Required Acceleration in Each Direction:
-[
] ZPA
[
] Other (specify)
OBE S/S =
F/B =
V=
SSE S/S =
P/B =
V=
6.
Were fatigue effects considered?
[ ] Yes
[ ] No If yes, describe how they were treated in overall qualification program:
VI.
If Qualification by Test, then Complete:
1.
-[
] Single Frequency
[ ] Multi-Frequency:
[ ] random
[ ] sine beat 4
[ ]
2.
[ ] Single Axis
[ ] Multi-Axis
[ ] Independent axis
[ ] In phase motions 3.
Number of Qualifications Tests:
Frequency Range:
5.
Natural Frequencies in Each Direction (Side / Side, Front /Back, Vertical):
S/S =
F/B =
V '=
t.
s.
6.
Method of Determing Natural Frequencies i$'
[ ] Lab Test
[ ] In-Situ Test
[ ] Analysis' 7.
TRS enveloping RRS using Multi-Frequency Test
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[ ] Yes (Attach TRS & RRS graph.5)
_[
] No M
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8.
Maximum Input g-level Test:
OBE S/S =
F/B =
V. =
OBE S/S =
F/B =
V=
9.
Laboratory Mounting:
A.
[ ] Bolt (No.
, Size
)
[ ] Weld (Length
)
-[
]
B.
Orientation and Fixturing:
10.
Functional operability verified:
[ ] Yes
[ ] No
[ ] Not Applicable 11.
Test Results inclu"ing modifications made:
l 12.
Other tests performed (such as aging or fragility test, including results):
13.
Failure Modes (If appropriate
)
14.
Margins Available:
[ ] Input Spectrum
[ ] Fragility VII. If Qualification by Analysis, then complete:
1.
Method Analysis:
[ ] Static Analysis
[ ] Equivalent Static Analysis.
[ ] Dynamic Analysis:
[ ] Time-History
'.- [.] Response Spectrum-2.
Natural Frequencies in Each Direction (Side / Side, Front /Back, Vertical):
S/S =
F/B =
V'; =
3.
Model Type:
[ ] 3D
[ ] 2D
[ ] 1D
[ ] Finite Element
[ ] Beam
/::
[ ] Close'd Form Solution
[ ] Other
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4.
[ ] Computer Codes:
Frequency Range and No. of modes considered:
[.] Hand Calculations 5.
Method of Combining' Dynamic Responses from Seismic and other Dynamic Loads:
[ ] Absolute Sum
[ ] SRSS
[ ] Other:
(specify) 6.
Damping:
OBE SSE Basis for the damping used:
7.
Support Considerations in the model:
8.
Critical Structural Elements:
Governing Load or Response Seismic Total Stress A.
Identification Location Combination
. Stress Stress Allowable B.
Maximum Allowable Deflection Max. Critical to Assure Functional Opera-Deflection Location bility 9.
Failure Modes:
10.
Margins Available:
[ ] Input Spectrum
[ ] Stress or Deflection 9
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