ML20237E720
| ML20237E720 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 12/21/1987 |
| From: | Bailey J GEORGIA POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| GN-1419, NUDOCS 8712290147 | |
| Download: ML20237E720 (7) | |
Text
- - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _.
Georgia Power Company Post Offico Box 282 Waynesboro. Geo.gia 30830 Telephone 404 554-9961 404 724 8114 Post Off c Box 262 b
Birmingham, Alabama 35202 Telephone 205 870-6011 VOgtie Project December 21, 1987 United States Nuclear Regulatory Commission File:
X7BC35 Attn: Document Control Desk Log:
GN-1419 Washington, D.C.
20555 NRC DOCUMENT NUMBERS 50-424 AND 50-425 OPERATING LICENSE NPF-68 CONSTRUCTION PERMIT NUMBER CPPR-109 V0GTLE ELECTRIC GENERATING PLANT - UNITS 1 AND 2 CLARIFICATION OF FSAR 9.5.3 - EMERGENCY LIGHTING Gentlemen:
In response to questions from your staff regarding the Amendment 34 to the Vogtle FSAR submittal on emergency lighting, we clarify our submittal as follows:
1.
Footnote
'g' to Table 430.5-1 states that lighting levels lower than those shown in the table will be verified as acceptable for the task at hand by operating personnel.
Pre-operational test 1-3QD-01 was completed to verify '.nis commitment.
2.
Dedicated portable DC units are provided to aid the operators when traversing access routes from the main control room to remote l
shutdown locations.
These DC units are administrative 1y controlled l
and subject to periodic surveillance.
3.
A single sealed beam modular unit with a self-contained battery and charger unit which is rated for 8-hour minimum operation upon loss of power to the essential lighting system is provided for each control room.
These units are located on the column adjacent to the shift supervisors office (shown on Figure 6.4.2-1) and illuminate the general area of the main control board.
4.
As noted in footnote
'e' to Table 430.5-1 the luminous ceiling is designed and qualified to Seismic Category 1 requirements, and while lamps are not guaranteed to remain functional during or following a DBE, test results have shown that the lamps remain functional.
Attached are excerpts from the SEISMIC SIMULATION TEST REPORT CONTROL ROOM SUSPENDED CEILING (AX1ANO3-27-1) summarizing these test resul ts.
Please note that the Increased Level Multifrequency Tests discussed in paragraph 6.4 are beyond I
8712290147 871221 FO ADOCK 050 4
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File:
X7B.C35 Log: GN-1419 December 21, 1987 Page Two the SSE envelope for Vogtle, hence the results to not adversely impact the conclusion that the luminous ceiling is designed and qualified to the Vogtle Seismic Category I requirements.
Should you have any questions, please inquire.
Sincerely, h-J. A. Bailey Project Licensing Manager JAB:jc Attachment xc: NRC Regional Administrator NRC Resident Inspector J. P. O'Reilly P. D. Rice L. T. Gucwa R. A. Thomas J. E. Joiner, Esquire J. B. Hopkins (2)
G. Bockhold, Jr.
R. Goddard, Esquire R. W. McManus Vogtle Project File
OlSTRIBUTION TO: FOR: REVIEC INF0.
V0GTLE ELECTRIC JOB NO.
- MECHANICAL M
HVAC EQUIPMENT TAG NO.
EQUIPM ENT PROCESS
- CONTROL SYSTEMS
- ELECTRICAL WIRIN G CONDUlT
- HAZARDS STARTUP
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- CIVIL /STRUCTU R AL DESIGNATION NO,
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^/4 ACTIVITY NO-N0
- STRESS / PLANT DESIGN SYSTEM NO-r
- A CODES AND STANDARDS CATEGORY NO
- ARCHITECTURAL YES % NO
- STARTUP RETROFITTING REQUIRED
- CONSTRUCTION
- NOT REQ'O BY ENGRG 1
- CLIENT
- EQUIP. QU ALIFICATION
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IDENTIFYING TITLE OF THIS. DOCUMENT:
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Bechtel Log No.
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IMPORTANT Permission to proceed does not constitute acceptance or opproval of design details, calculations, onelyses, test methods er materials developed or selected by the supplier end does not relieve supplier from full compliance with contractual obligations.
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August 25, 1980 MTE I
Su References SPECIFICATION (S) u
_ s.s w 4hV in Section 7.0 1.0 CUSTOMER Day-Brite Lightino ADDRESS 1015 South Green Street, Tupelo, Mississippi 38801 2.0 TEST SPECIMEN A Compac Ceiling Light Module and an Incandescent Light tbdule Day-Drite Lighting 3.0 MANUFACTURER 4.0
SUMMARY
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A Compac Ceiling Light Module and an Incandescent Light Module described in Paragraph 5.1, hereinaf ter called the specimens, were subjected to a Seismic Simulation Test Program as' required by the Day-Brite Lighting Purchase order Number 4-18232, and Wyle Laboratories' Seismic Test Procedure 541/1783-3/DK, dated April 24, 1980, Revision C.
This test program was performed on July 10 and 11, 1980.
The test program consisted of biaxial resonance search testing, biaxial qualifi-cation level random multifrequency testing, and increased level random multi-frequency testing in each of two test orientations. The specimens were instrumented with accelerometers and electrically powered during the test program.
Prior to start of the test program, the original design of the Compac Ceiling Light Module was modified to incorporate horizontal restraints in the mounting configuration.
It was demonstrated that the specimens possessed sufficient integrity to with-stand, without compromise of structures or electrical functions, the prescribed qualification icvel random multifrequency tests. However, some problems were experienced during the increased level multifrequency tests as described in Paragraph 6.4.1 and Table I.
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6.0 TEST PROCEDURES AND RESULTS (Continued) 6.3 Qualification Level Random Multifrecuency Test Procedures The specimens were subjected to 30-second duration biaxial multi-faequency random motion which was amplitude-controlled in one-third octave bandwidths spaced one-third octave apart over the frequency range of 1 Hz to 40 Hz.
Two simultaneous, but independent, random signals were used as the excitation to produce phase-incoherent horizontal and vertical motions. The amplitude of each one-third octave bandwidth was independently adjusted in each axis until the TRS enveloped the RRS.
The resulting table motion was analyzed by a response spectrum analyzer at 24 and 5% damping, and plotted at one-sixth octavc z intervals over the frequency range of 1 to 250 Hz.
Five (5) OBE tests were performed prior to application of the SSE test in each orientation.
The OBE RRS are shown in Figures 1 through 4.
The SSE RRS are shown in Figures 5 through 8.
l 6.3.1 Qualification Level Random Multifrecuency Test Results It was demonstrated that the specimens possessed sufficient integrity to withstand, without compromise _of structures or functions, the prescribed simulated seismic environment.
Table I contains descriptions of the tests.
TRS plots of the control accelerometers from the SSE test in each orientation (analyzed at 2% and 5% damping) are presented in Appen-dix II.
6.4 Increased Level Multifrequency Test Procedureg rollowing completion of the multifrequency tests outlined in Para-graph 6.3, the specimens were subjected to increased level multi-frequency testing.
The specimens were subjected to 30-second duration motion as described in Paragraph 6.2.
The TRS was analyzed at 5% damping, and plotted at one-sixth octave intervals over the frequency range of 1 to 1000 Hz.
The input acceleration levels were increased in iterative levels until the TRS enveloped the RRS shown in rigures 9 and 10.
After enveloping the RRS shown in rigures 9 and 10, the input accelerations were increased until the TRS enveloped the RRS shown in Figures 11 and 12.
The horizontal RRS (rigure 11) was performed to the limits i
of the test machine over the frequency range of 1 to 1.6 Hz.
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7 TEST REPORT NO, 44gg$ g 6.0 TEST PROCEDURES AND'RESULTS (Continued) 6.4.1 Increased uvel Multifrequency Test Results It was demonstrated that the specimens possessed sufficien.
' integrity to withstand, without compromise of. structures or functions, the prescribed simulated seismic environment with the following exceptions.
Post-Run 16 revealed that the top and bottom access panel had loosened.
The two fluorescent lamps came out of their sockets as shown in Photographs 5 and 6.
The safety straps retained the bottom panel.
The top _and bottom access panel loosened during Run 17.
It was noted that the retaining latches for the top access panel were rotating-(during test), causing the panel to loosen as shown in Photograph 7.
The top access panel was taped in place prior to Run 8.
The bottom access panel loosened during Runs 18,.19, 21 and 22; however, the panel was retained by the safety straps.
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Prior to Run 19, the tape which had been applied to the top access panel was removed and twelve (12) No. 6-3/4-inch long sheet metal screws were added to hold the panel in place as shown in Photographs 8 and 9.
During Run 20, the bottom access panel loosened and three of the four safety straps broke, as shown in Photograph 10.
The four stainless steel safety straps on the incandescent light module were replaced with safety wire. The four stainless steel safety straps were then installed on the bottom access panel.
The two fluorescent lamps stopped burning approximately 15 seconds into Run 22; however, the lamps functioned properly when reinserted into the socket.
The post-Run 22 inspection revealed the following discrepancies as shown in Photographs 11 through 19.
o One of the turnbuckles' threads were stripped (Photograph 11) e One of the turnbuckles' rods was bent (Photograph 12) e Some screws were missing from the outside corner k(
of the box assembly (Photograph 13)
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PAGE NO.
8 TEST REPORT NO-44815-2 6.0' TEST PROCEDURES AND RISULTS (Continued) 6.4.1 Increased Level Multifrecuency Test Results (Continued) ll'
'e One of the hangers and mass rods was bent I
(Photograph 14) e-The rod holding the 94-pound mass was broken
.(Photograph 15) e The-light modules and spider brackets were misaligned (Photograph 16).
l 6.5 Specimen Resoonse Procedures Eight (8) specimen-mounted uniaxial piezo-electric accelerometers were provided for the specimen during the test program.
Placement of the accelerometers was as shown in Photographs 3, 20 and 21.
FM tape recorders provided a record of each accelerometer response-during the test program.
6.5.1 Specimen Resoonse Results Transmissibility plots from the resonance search tests are presented in Appendix I.
6.6 Electrical Powering Procedure s Electrical power of 115 VAC, 60 Hz, single-phase, was provided for the specimens during the test program.
6.7 Displacement Measurement Procedures An LVDT was installed at'one corner of the test fixture as showr.
in Photograph 22.
The output signal of the LVDT was recorded on an oscillograph recorder.
6.7.1 Displacement Measurement Re sults The maximum zero-to-peak deflections recorded during the test program are shown in Table I.
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