ML17298B641
| ML17298B641 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/10/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| ANPP-31393-EEVB, NUDOCS 8412130422 | |
| Download: ML17298B641 (14) | |
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REGULATORY iNFORMATION DISTRIBUTION SYS EM (RIDS)
~i ACCESSION NBR: 841213042?
DOC ~ DATE: 84/12/10 NOTARIZED:
NO FACIL:STN-50-528 Palo Verde-Nuclear Stationi Unit lr Arizona Publi STN-50 529 Palo Verde Nuclear Stationi Unit 2i Arizona Publi STN-50-530 Palo Verde Nuclear Stationi Unit 3g Arizona Publi AUTH INANE'UTHOR AFFILIATION VAN BRUNTiE',ED Ar-izona Public Se'rvice Co ~
REC IP, NAME>
RECIPIENT AFFI4'l ATION KNIGHTONg G ~ Itl ~
Licensing Branch 3
SUBJECT:
Forwards drfat proposed FSAR revs. c1arifying recording provisions of loose parts monitoring sys L revising other instrumentation characteristics
~ Revs will be incorporated into FSAR Amend 14
'ISTRIBUTION CODE:
B0010 COPIES RECEIVED:LTR ENCL SIZE TITI.E; Licensing Submittal:
PSAR/FSAR Amdts L Related Correspondence DOCKET 0
05000528 05000529 05000530 NOTES:Standar dized plant, Standardized plant.
Standardized
- plant, 050005?8 05000529 05000530 RECIPIENT ID CODE/NAME NRR/DL/AOL NRR L83 LA INTERNAL; ACRS 41 ELO/HDS3 IE/DEPER/EPB 36 IE/DQASIP/QAB21 NRR/DE/AEAB NRR/OE/EHEB NRR/OE/GB 28 NRR/OE/MTEB 17 NRR/DE/SGEB 25 NRR/OHFS/LQB'2 NRR/OL/SSPB NRR/DSI/ASB NRR/OS I/CS8 09 NRR/OS I/MET B 1?.
NR AB 22" REG FI Off R
DOAMI/MIB EXTERNAL: BNL(AflDTS ONLY)
- NTIS,
-COPIES LTTR ENCL 1
0 1
0 6
6 1
0 1
1 1
1 1
0 1
1 2
2 1
1 1.
1 1
1 1
0
~ 1 1
1 1
1 1
1 1
1 1
1 0
1 1
1 1
1 1
1 RECIPIENT ID CODE/NAME NRR LB3 BC LICITRArE'1 ADM/LFMB IE. FILE IE/DEPER/IRB 35 NRR ROEiM ~ L NRR/DE/CEB ll NRR/DE/EQB 13 NRR/DE/MEB 18 NRR/OE/SAB
?4 NRR/DHFS/HFEB40 NRR/DHFS/PSRB NRR/Ds I/AEB 26 NRR/OSI/CPB 10 NRR/OSI/ICSB 16 NRR/OS I/PSB 19 NRR/DSI/RSB 23 RGN5 DMB/DSS (AMDTS)
LPDR 03 NSIC 05 PNL GRUEL'iR COPIES I TTR ENCL 1
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1 2-2 1
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TOTAI NUMBER OF COPIES REQUIRED:
LTTR 54 ENCL 46
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Arizona Public Service Company ANPP-31393-EEVB/WFQ December 10, 1984 Director of Nuclear Reactor Regulation Mr. George W. Knighton, Chief Licensing Branch No.
3 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2, and 3
Docket Nos.
STN 50-528/529/530 PVNGS FSAR Update Instrumentation and Controls File:
84-056-026 G.1.01.10
Dear Mr. Knighton:
Enclosed are draft proposed FSAR changes for your information.
These changes clarify the recording provisions of the loose parts monitoring system and revise other instrumentation characteristics.
These changes are considered acceptable as they do not adversely affect the ability of this instrumentation to perform its safety function.
These changes are expected to be incorporated in FSAR Amendment 14 to the FSAR which is scheduled for submittal in February 1985.
Please contact William Quinn of my staff if you have any questions.
Very truly yours, E. E.
Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director EEVB/WFQ/mb Enclosure 8412130422 841218 I
PDR ADQCK 05000528)'
PDR,'~
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ANRP-31393 STATE OF ARIZONA
)
) ss.
COUNTY OF MARICOPA)
I, Edwin E.
Van Brunt, Jr.,
represent that I am Vice President, Nuclear Production of Arizona Public Service
- Company, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority to do so, that I have read such document and know its
- contents, and that to the best of my knowledge and belief, the statements made therein are true.
Edwin E.
Van Brunt, Jr.
niu Svora to before me thfa~O day of 1984.
d d
Notary Pub c
My Commission~ Expires:
My Gominlsslop, Expires April 6, 1987 yd t e t*
gist e'
I h
P P)i k
Mr,.'.
W-. Knighton PVNGS FSAR Update Instrumentation and Controls ANPP-31393 Page 2
cc:
A. C. Gehr (w/a)
R.
P.
Zimmerman (w/a)
E. A. Licitra (w/a)
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PVNGS FSAR ENGINEERED SAFETY FEATURE SYSTEMS (2)
Fuel pool area radiation (1)
Containment power access purge exhaust area radiation Sensor
Response
Time 0.75s
+
(power) 1.75s
+
(refueling) 30~
~Ss
+
One-Out-of-Two ESFAS
Response
Time 2.0s
- 2. Os
- 2. Os (sz l2 (3)
Fuel building exhaust air-borne activity Control room air intake airborne activity CpG ~
+
6 o-~
+
2.0s 2.0s (5)
Deleted
)8 (6)
Control room air intake smoke 50s N.A.
(Manual Initiation) b.
~
The accuracies of the ESFAS measurement channels are:
February 1984 7.3-39 Amendment 12
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PVNGS FSAR CONTROL SYSTEMS NOT REQUIRED FOR SAFETY A high temperature, low noise, radiation hardened, flame retardant coaxial cable will connect the accelerometer to a preamplifier located in a'junction box outside of the biological shield.
From the preamplifier the signals are sent via suitable wires,'uch as twisted shielded pair, to the data acquisition panel in the control room.
Cabling between redundant sensor channels from the sensor to the preamplifier
'ocated outside the secondary shield wall will be physically separated from each other.
A data acquisition panel located in the control room area contains alarm modules that continually monitor the incoming signals from the preamplifier for the presence of impacting.
The alarm level for each accelerometer is determined by a set point adjustment.
Alarm levels will be set above background levels established during baseline
".signature" testing.
The system sensitivity is better than 0.05 ft-lb at the sensors.
Initial alarm setting is 0..5+ 0.25 ft-lb.
The occurrence of a loose part impacting on the inside of the structure causes bursts of signals that. exceed the alarm set point and trigger the alarm.
The data accpisition panel includes tape recorders with playback and an audio monitor.
Recordin Two tape recorders are provided to record all loose parts data and to play back baseline tapes for audio comparison.
One recorder is dedicated to recording the loose parts channels for recording.
Manual recording control is also provided.
The second recorder is provided with selector switches December 1981 7 o 7~3 Amendment 7
I e
~
g PViilGS FSAR e
Input dc voltage low APPENDIX 7A o
Loss o= synchronization (of the inverter only)
I o
Transfer switch not on normal source e
Inverter fan failure 0
e Distribution panel undervoltage o
Ground detection r
a Overload tripping of the panel feeder breaker For Area item 1.b, the instrument and control system loads connected to each instrument distribution panel are provided as noted on table 7A-1.
Those specific instrument parameters and controls detailed
='n CESSAR 7.4.1.1.10.7 as being required to achieve cold shutdown are listed in table 7A-2.
Instrument loop-displays and controls available to the control room operator and the instrument distribution panel supply are identified.
Notor operated valves, pumps, pressurizer heaters and sole-noids reauired to achieve cold shutdown are powered from buses other than the instrument distribution panels.
In response to Area item 1.c, we have determined that loss of a single instrument. distribution panel, Class IE or non-IE, will cause a loss of some of the indicators and recorders J
available to the control room operator.
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This failure mode is distinguishable and will not offer 5//JC 8 h
ins rumentation and 'control systems lost will generate alarms and actuation of some eauipment as the loop output
~ ZNSEZ contacts fail to their deenergized states.v In the non-IE instrument loops affecting safe shutdown circuits, i.e.
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C'o~reoL, goof~3 October 1981 7A-5 Amendment 6
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