ML20004D078
| ML20004D078 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 06/01/1981 |
| From: | Baynard P FLORIDA POWER CORP. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-3.A.1.2, TASK-TM NUDOCS 8106080322 | |
| Download: ML20004D078 (9) | |
Text
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Florida m......e.. Pow r June 1, 1981 s
File:
3-0-30 El t' (
yJO O 319817 '-10 Mr. Darrell G. Eisenhut, Director Division of Licensing b
Office of Nuclear Reactor Regulation
/ /y / -
U.S. Nuclear Regulatory Commission Washington, DC 20555 Subjec t:
Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 NUREG-0737 - Post TMI Requirements Item III. A.1.2 - Upgrade Emergency Support Facilities
Dear Mr. Eisenhut:
In response to your February 18, 1981, letter, Florida Power Corporation commi tted to provide you with a description of our proposed Technical Support Center (TSC) and our Operations Support Center (OSC) by June 1, 1981.
In accordance with our April 14, 1981, letter, we hereby provide the documentation necessary to conceptually describe the TSC, certain aspects of the Emergency Operations Facility (E0F), and our OSC. provides a description of the fellowing aspects of the TSC:
instrumentation instrument quality
. instrument accuracy and reliability
. power supply systems
. power supply quality, reliability, and availability
. consequerces of power supply interruption t
. data display systems
. data transmission system between the TSC and the Control Room.
f The TSC has been under design and construction since early 1980. Completion of the f acility is expected by late 1981.
The TSC is a reinforced concrete structure (i.e., 18 inch thick walls and roof) located approximately 300 feet Northeast or the Control Complex.
Its location is within two minutes I
comfortable walking time of the Control Room (portal to portal).
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k Mr. Darrel G. Eisenhut Page Two June 1, 1981 The TSC has approximately 4400 square feet of inside-wall area and 1200 square feet of electrical and HVAC equipment area.
The TSC is designed to withstand earthquakes per the Uniform Building Code and to withstand winds with a 100-year recurrence frequency.
The TSC will meet the flood require-ments of a 90-year frequency flood.
The acequacy of this feature was dis-cussed with members of your staff via telephone on August 28, 1980 The functions and responsibilities of the TSC staff and the EOF staff are described in our implementing procedures as submitted to you by letter dated February 27, 1981.
These procedures 61so delineate the activation criteria for the TSC and the EOF.
F / thy of note is the fact that these procedures describe the location of the existing emergency response facilities, but the staffing and actuation criteria are not expected to change upon completion of the proposed facilities (i.e., the TSC and the EOF). The existing EOF is called the Corporate CoGnd Center and will subsequently share in the management / coordination function upon completion of the permanent E0F.
Plant records will be maintained by the records management system as described in Document Control Procedures DC-101, -102, -103, and -104.
These procedures are available for your inspection at the site.
The TSC documents maintained by these procedures are:
CR-3 Standard Technical Specifications CR-3 Final Safety Analysis Report Plant Operating Quality Assurance Manual (includes all procedures)
Manufacture's instruction manuals Blue-line systems flow diagrams Aerial maps and meteorological concentration overlays.
Concurrent with our conceptual design description of the E0F, we will pro-vide a description of the data fo be provided at this facility.
As commit-ted in our April 14, 1981 response, we will provide this information by l
July 1, 1981.
l l
The OSC is the same facility as previously described to you in our January 11, 1981, letter, with one exception.
We will use portable radiation monitors versus a permanent monitoring system. We have determined this change to be acceptable based upon clarification delineated in NUREG-0696.
Very truly yours, J.
sA Dr. P. ~Y. Baynard Manager j
Nuclear Support Services Mardis(M11)C2-1
T-ATTACHMENT 1 I.
INTRODUCTION The Technical Support Center (TSC) instrumentation described herein has been purchased and is scheduled for installation during the Fall 1981 refueling outage.
This system named " RECALL" consists of commercial quality compo-nents and utilizes a distributed processing approach to optimize system flexibility, expandabili ty, and reliability to acquire,
- store, process, and display plant parameters necessary for personnel to perform their functions during normal and transient operating conditions.
The system incorporates a processor to acquire and digitize data once per second and distributes this data to other processors for display in various formats.
The system includes an independent RECALL (flight recorder) func-tion to provide a highly lable method for analysis of plant con-ditions preceding an evt. and for a post-event transient assess-ment.
The system configuration is shown in Figure 1 (attached).
This configuratio' provides a
Data Acquisition Computer which distributes signals to the Data Display Systems in the Control Room, the TSC and a offsite facility.
The Data Acquisition and Display System design, development, quali-fication, and installation will be independently verified by quali-fled personnel other than the original designers and developers.
II. TECHNICAL SUPPORT CENTER FUNCTION l
[
The TSC is an emergency response facility that, from a location outside the Control Room, will provide technical support and plant management during emergency conditions and during the accident recovery phase.
l l
The TSC will be activated during Alert, Site Emergency and General l
Emergency levels of emergency action.
The TSC will support senior management and technical personnel to provide guidance to Control Room personnel, Accoinmodations for NRC personnel will also be pro-l vided.
Operational data will be provided in the TSC.
The user will be given the capability of data display and information storage /
J recall. The data call-up displays will have the capability to pro-I vide current value and trend history. The data provided for analy-su in the TSC will be sufficient to determine plant behavior prior to and throughout the course of a transient.
Human factors considerations were included in the design and installation of the CRT terminal call-up displays.
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III. TECHNICAL SUPPORT CENTER INSTRUMENTATION AND POWER SYSTEM The TSC will be able to display data comparable in accuracy and re-liability to the corresponding data displayed in the Control Room.
The TSC will be able to display necessary data independently from actions in the Control Room and without degrading and/or interfering with Control Room and plant functions.
The total TSC data system, including instrumentation and power sup-plies, is designed to achieve a functional unavailability goal of less than 1% per year.
A preliminary analysis by the vendor indi-cates that a 0.01 unavailability design goal can be met but may require specifying certain surveillance and maintenance procedures in conjunction with optimum replacement parts availability.
The TSC instrumentation and power supplies are designed such that circuit transients or power supply failures and fluctuations sha'il not cause a loss of any data vital to the TSC function.
The TSC electrical equipment load will not degrade the capability of any safety-related power source.
The normal power feed to the TSC is from the unit auxiliary bus, which can be fed from either the Crystal River Unit 3 generator or offsite power (230 KV grid).
This feed is connected to a transfer l
switch at the TSC which is also connected to an Emergency Diesel Generator. Upon loss of normal power sources, the Diesel Generator l
will start and " pick-up" all TSC loads in approximat'ly 15-20 second-This time delay will not effect the TSC Display computer since it has an uninterruptible power supply (UPS) at its input with a 20 minute, battery-backed, " ride through" capability.
IV. DATA ACQUISITION AND RECALL The Data Acquisition,omputer is designed for high speed data acquisition.
Input signals, encompassing a full range of voltage, current, and thermocouple inputs, are processed via multiplexers, programmable gah amplifier and A/D converters.
Digitalized data is then routed via five RS-232-C compatible ports, hard-wired l
independently to the TSC data display system and Control Room display systems and via modem to the offsite location.
The RECALL (flight recorder) obtains it'., inputs independently from the plant sensor interface, not the data acquisition computer servicing the balance of the system.
The RECALL Recorder System continuously acquire, and records plant data, and monitors for a defined event once per second.
An event is defined as a change in contact state, an analog value passing through a limit value, or a combination of digital or analog values defined by the user. Once an event is recognized, the system will not record over data that has been recorded one hour before the etent but will continue to record data after the event until manually stopped or the storage medium is unavailable.
Blake(F01)D1-3 -
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The data is stored on two dual-drive digital cartridge tape record-The total storage capacity is approximately 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> of plant ers.
data (based on 160 analog and 64 digital inputs at once second up-T dates).
If no fresh tapes are inserted, the system will automatic-ally protect data for one hour before the event and eleven hours l
afterwards.
By periodic insertion of new tapes, data can be stored continuously.
Once an event has occurred, the tapes will sequen-l tially and automatically eject and a Label Printer will eject ap-propriate labels with tape encoding.
The system has an auto re-start capability upon loss of power and uses a battery-backed Real Time Clock.
Alann contacts provided include " EVENT DETECTED",
" TAPES NEED ATTENTION", "0NE HOUR OF TAPE REMAINING", AND " RECALL STOPPED".
Both the system real-t'me data acquisition computer and RECALL Recorder System are in a NEMA cabinet which is located next to the plant sensor input terminations.
V.
TSC DAT4 DISPLAY SYSTEM The TSC Data Display System provides the capability for real-time display and delogging of Recall Recorder System tapes for off-line historical analysis.
The Data Display Systen includes a computer, sof tware, a recorder, and up to four RS-232C compatible computer peripherals.
A " work station" concept has been developed such that data is displayed using integrated peripheral devices suitable for detailed diagnu-tics and includes an alpha-numeric CRT, graphic plotting CRT with hard-copy output and a line printer.
The devices can be utilized to display in either real-time or the delogging mode.
A typical alpha-numeric CRT display printout is shown in Figure 2 and a typical graphic CRT display is shown in Figure 3.
The CRT displays will provide the ability to:
1.
Display or print a parameter's current value in engineering units.
2.
Trend a parameter's current value on the CRT or printer.
3.
Change the assignment of any parameter to a group of parameters.
4.
Display or print the current values of a group of parameters.
5.
Display or print pre-defined and formatted displ ays of parameter data.
Blake(F01)D1-3 -
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VI. CONTROL ROOM AND OFFSITE LOCATION These areas are similar in display capability to the TSC but do not contain tha delogging capability.
VII. NUCLEAR DATA LINK (NDL)
The RECALL Data System is capable of adding a dedicated processor linked to the Data Acquisition Compiater to meet the future requirements of THE NDL.
The preliminary criteria specified by the NRC are well within the capabilities of this system.
i, B1ake(F01)D1-3.
FIGURE I Data Acquisition and Display System
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FIGURE 2 1
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DATE 02/01/01 TIME 00:03:00 GROUP 4 UNIT 1 PR BLOCK 1
= GROUP 3 UNIT 1 GRPH BLOCK 3
=
OTGU D Pr (PSIG) 456.4 RX Power
(%)
.0 SG B OPR LVL (IH) 105.0 RC Pr UR (PSIG) 1989.1 SG B SU LVL (IN) 169.4 Par Lvl (IN) 399.0 4
Tove NR-B (F) 520.0 Th UR-A (F) 462.0 1c NR-D (F) 520.0 Tc WR-A (F) 461.6 Tc WR-B (F) 460.4 RC Pr NR (PSIG) 1991.7 Th UR-li (F) 462.4 Gen MWe
.0 RC Flow A&B (%)
45.2 1
RX Power
(%)
.0 CTHT PR (PSIG) 3.6 Tove A&B (F) 520.0 GROUP 5 UNIT 1 D/A BLOCK 4
= GROUP 6 UNIT 1 MDM BLOCK 2
=
RC Pr WR (PSIG) 1909.1 Main FW A (Mt/HR)
.04443 Pr Lvl (IN) 399.0 Main FU B (MC/HR)
.0 4
LTDN Flow (GPM)
.0 Tfw A&B (F) 80.6 Mb Flow (GPM)
.0 OTSG A Pr (PSIG) 454.9 MU TANK LVL (IN) 61.9 SG A CPR LVL (IN) 102.0 MU TANK Pr (PSIG) 0.9 SG A SU LVL (IN) 166.2 HPI Flow A1 ( Gl *M )
335.3 OTSG B Pr (PSIG) 456.4 i
HPI Flow A2 (GPM) 289.7 SG B OPR LVL (IN) 103.8 4
IIPI Flow A3 (GPM)
.0 SG D SU LVL (IH) 169.4 ltPI Flow A4 (GPM)
.0 RX Power (I)
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