ML20154S586
| ML20154S586 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 03/26/1986 |
| From: | Corbin McNeil Public Service Enterprise Group |
| To: | Adensam E Office of Nuclear Reactor Regulation |
| References | |
| RTR-REGGD-01.032, RTR-REGGD-1.032 NUDOCS 8604020083 | |
| Download: ML20154S586 (8) | |
Text
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Public service Electric and Gas Company Cctbin A. McNeill, Jr.
Pubhc Service Electric and Gas Company P.O. Box 236. Hancocks Bridge.NJ 08038 609 339-4800 '
Vice President -
%ciear March 26, 1986 Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 Attention:
Ms. Elinor Adensam, Director Project Directorate 3 Division of BWR Licensing
Dear Ms. Adensam:
i CONFORMANCE TO REGULATORY GUIDE 1.32 HOPE CREEK GENERATING STATION DOCKET NO. 50-354 i
Pursuant to a meeting on March 20, 1986.with the NRC Power Systems Branch; Public Service Electric and Gas Company l
(PSE&G) hereby submits proposed changes to the Hope Creek Generating Station (HCGS) Final Safety Analysis Report (FSAR) to clarify compliance to NRC Regulatory Guide 1.32.
I t
The enclosed FSAR changes provide a detailed description of HCGS compliance with Regulatory Guide l'.32, Position C.l.b regarding battery charger design capacity.
These FSAR revisions will be incorporated in FSAR Amendment 15 after fuel load.
If there are any questions, do not_ hesitate.tx) contact us.
I Sincerely,
)
~
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l I
l Attachment 8604020083 860326 I.I l
i PDR ADOCK 05000354 i
PM A
i
Director of Nuclear 2
3-26-86 Reactor Regulation C
D.H. Wagner USNRC Licensing Project Manager R.W.
Borchardt USNRC Senior Resident Inspector Sang Rhow NRC Power Systems Branch
~
HCGS FSAR 1/84 1.E.1.32' Conformance to Reculatorv Guide 1.32. Revision ~,
Feoruarv 1977: Criteria _ tor Satetv-Relatec Electric Power svstems or Nuclear Power P2 antr Although Regulatory Guide 1.32 is not applicable to HCGS, per its implementation section, HCGS complies with IEEE 306-1974, as endorsed and modified by Regulatory Guide 1.32, subject to the clarification of Position;C.1.d and C.1.f.
s C. I. b :
1 Position C.1.d of Reculatory Guide 1.32 references Regulatory l Guide 1.75.
HCGS compliance to this Regulatory Guide is j discussed in Section 1.8.1.75.
Position C.1.f of Regulatory Guide 1.32 references Regulatory l Guide 1.9.
HCGS compliance to this Regulatory Guide is discussed i
in Section 1.E.1.9.
See Chapter E for further discussion of the electrical system and Section 1.8.2 for the NSSS assessment of this Regulatory Guide.
I 1.8.1.33 Conformance to Reculatorv Guide 1.33, Revision 2, Februarv 1976: Qualltv Assurance Procram Recuirements (Ocerationi HCGS complies with ANSI N18.7-1976/ANS-3.2, as endorsed and modified.by Regulatory Guide 1.33.
The contents of the plant operating procedures will comply with the applicable requirements
-of Section 5.3 of ANSI /ANS-3.2-1982.
See Section 17.2 for further discussion of quality assurance during plant operation.
~
1.8.1.34 Conformance to Reaulatory Guide 1.34, Revision 0, December 28, 1972: Control of Electroslaa Weld Properties Regulatory Guide 1.34 is not applicable to HCGS because the process is not used.
See Section 1.B.2 for the NSSS assessment of this ' Regulatory Guide.
s HCGS cornf ;es w;h Pos;&;en C.L.h of Regula4 cry Guide 152 c.s l
d;scussect in Section 6.3.2 2.
1.8-18 Amendment.4
HCGS FSAE 11/85 8.3.2.1.2.3 Class 1E Battery Chargers The battery chargers are full-wave, silicon-controlled rectifiers.
The chargers are suitable for float-charging their respective lead-calcium batteries.
The chargers operate from a 480-V 3-phase, 60-hertz power supply.
The chargers are supplied-from MCCs of the same channel as the battery system channel it supplies.
. Battery chargers associated with a battery are capable of supplying the largest combined demand of the various continuous steady-state loads plus charging capacity to restore the battery from the charge state at the completion of their design duty cycle (design minimum charge) to the fully charged state within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
f + Insed A+ioc}>ed-8.3.2.1.2.4 Class lE Battery Loads The loads supplied by each Class 1E battery system, along with its length of operation during a loss of all ac power, are shown X
in Tables 8.3-7 through 8.3-10 and Figures 8.3-E',and-E.3
'04-
%e Loads are divided among different battery systems so that each system serves loads that are identical and redundant, are different from but redundant to plant safety, or are backup equipment to the ac-driven equipment.
8.3.2.1.2.5 Separation and Ventilation For each Class lE dc system, the battery bank, chargers, and de switchgear are located in separate compartments of the Seismic Category I auxiliary building.
The battery compartments are ventilated by a system that is designed to preclude the possibility of hydrogen accumulation.
Section 9.4 describes the ventilation system in the battery rooms.
Redundant dc. systems
. are separated to minimize the likelihood of a single hazard causing the loss of more than one channel.
8 3-42 Amendment 13
INSERT TO FSAR PAGE 8.3-42 Tables 8.3-7 through 8.3-10 show various transient and steady state battery loads grouped into specific time increments.
The listed load levels are not continuous steady state loads for the entire time period listed.
The indicated load levels are maximum current levels experienced during that particular time increment, and some are of a shorter duration than the actual time increment in which they appear.
Loads which are not considered as continuous steady state loads are momentary loads such as switchgear control operations, motor operated valve operations, motor starting currents and various inrush currents.
Momentary loads are. supplied from the battery when such loads exceed the maximum output of the battery charger.
In addition, inverters are not considered as continuous steady state loads because they are normally supplied-from AC power sources and are not from the battery charger.
.s HCGS FSAR 1/84 Tnus sufficient. independence and redundancy exists between the Class IE de systems to ensure performance of minimum safety functions, assuming a single failure.
Spare cattery chargers are provided to replace any of the Class 1E cnargers.
Independence of redundant de systems is discussed in
.Section 8.3.2.2.a.
d. ~+. Ins er+ A+in ch ed.
,df )i Regulatory Guide 1.41, Preoperational-Testing of C
Redundant Onsite Electric Power Systems to Verify Proper Load Group Assignments, March 1973 - The Class 1E de systems have been designed in accordance with Regulatory Guides 1.6 and 1.32, and testing capabilities are provided in accordance with the guidance of Regulatory Guide 1.41.
These systems are tested as follows:
1.
Testing of the de power system, including an acceptance test of battery capacity, is performed before unit operation in accordance with the requirements described in Chapter 14.
2.
The charger, battery connections, and charger supply are verified for proper assignment of ac load groups.
j 3.
Class 1E de systems are functionally tested along with -the associated ac load groups-by i
disconnecting and isolating the other ac load groups, its ac power sources, and the associated de system.
Each test includes simulation of an engineered safety features (ESF) actuation signal, startup of the SDG and the load group under test, sequencing of loads, and the functional performance of the loads.
During these tests, the ability of the de system to perform its intended functions, e.g., control of SDGs and Class 1E ac switchgear, is verified.
4.
During the testing of the Class 1E de system and l
its associated ac load group, the buses and loads of the de systems associated with other ac load j
I f
S.3-45 Amendment 4
-,. -, - _ = _ -
~ -
t INSERT TO FSAR PAGE 8.3-45 d.
~ Regulatory Guide 1.32, Criteria for Safety-Related Electric Power Systems for Nuclear Power Plants, February 1977 - Position C l.b states that the. capacity of the i
battery-charger supply should be based on the largest-4 combined' demands of the.various continuous steady-state loads and the charging capacity to restore the battery
]
from the design minimum charge state to the fully charged state, irrespective of the status of the plant during which these demands occur.
For the 125V-dc system, HCGS complies with this position by clarifying uninterruptible power supply inverter (UPS) operation with respect to DC bus loading.
Following a loss of all AC power the UPS inverters are powered directly from their respective battery.
Upon restoration of AC power, the UPS inverters are powered from the same Class lE AC bus as their associated battery charger.
During normal plant operation
'with'AC power available the UPS inverters are powered from either one of their two associated 480-V (MCC) power supplies.
As a result, with respect'to battery charger calculated design capacity, the UPS inverters
~ '
are not included as an electrical load on the DC bus.
i The design-continuous steady-state load is defined L
as only those electrical loads which are supplied soley by the batteries.
Based on the above clarification, l
HCGS complies with Regulatory Guide 1.32, Position 1C.l.b.
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,ee
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,,,m y-.,
,,,m..
r-e-c,,.,, - - - -,, - -,
,y ev-
.-=m
,.-.m-r.-err,,--
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.-- - - = - ---
r HCGS FSAR 1/84 groups not under test are monitored to verify the aosence of voltage, indicating no interconnections of redundant de systems.
A'. ) -Regulatory Guide.l.93, ' Availability of Electric Power p) f Sources - Compliance with Regulatory Guide 1.93 is discussed in Section 1.E.
gs J.4 Regulatory Guide 1.12E, Installation Design and 9'/
Installation of Large Lead Storage Batteries for Nuclear Power Plants, October 1978 - Compliance with Regulatory Guide 1.128 is discussed in Sections 1.8.
c'.3 Regulatory Guide 1.129, Maintenance, Testing, and
'p,,1
. Replacements of Larae Lead Storage Batteries for Nuclear Power Plants, Fecruary, 1976 - Regulatory Guide 1.129 endorses IEEE 450-1975, with clarifications.
Recommended practices of IEEE-450 for maintenance, testing, and replacement of batteries are followed for the Class 1E batteries and are discussed in Chapter 16.
)[.
IEEE 308-1974, IEEE Standard Criteria for Class 1E i
Electric Systems for Nuclear Power Stations - The Class 1E dc system provides de electric power to the Class 1E loads and for control and switching of the Class IE syster.s.
Physical separation and redundancy is provided to prevent the occurrence of common mode failures.
The design of the Class 1E de system includes the following:
1.
The dc system is separated into four independent channels.
2.
The safety actions by each group of loads are independent of the safety actions provided by each group's redundant counterparts.
3.
Each de subsystem includes power supplies that consist of one battery bank, and one or two battery chargers, as required.
8.3-46 Amendment 4
_