ML20128K685

Advises of Completion of Acceptance Testing of ERDS & Implementation of Erds,Per 10CFR50,App E,Section VI & Guidance of NUREG-1394,Rev 1.Data Point Library to Be Revised to Change Transmission Frequency from 15 to 30

ML20128K685
Person / Time
Site:	Browns Ferry, Sequoyah
Issue date:	02/12/1993
From:	Burzynski M TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-1394 NUDOCS 9302180251
Download: ML20128K685 (7)

Text

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4 te,me, wey wry um uaw seen cneanx9. temnw. sus February 12, 1993 U.S. Iluclear Regulatory Commission ATTN:

Document Control Desk Washington, DC 20555 Centlemen:

In the Matter of

)

Docket Nos.

50-259 50 327 Tennessee Valley Authority

)

50-260 50 328

)

50 296 EMERCENCY RESPONSE DATA SYSTEM (ERDS) - IMPl.EMENTATION Sequoyah (SQN) and Browns Ferry (BFN) Nuclear Plants have completed acceptance testing of the Emergency Response Data System (ERDS) and implementation of ERDS for SQN and BFN is complete in accordance with 10 CFR 50 Appendix E, Section VI, and the guidance of NUREC-1394, Revision 1.

The BFN outage begins January 29, 1993, and due to our commitment to upgrade the site SPDS computer, the ERDS link for BFN vill be disabled for the duration of this outage.

Because of the BFN SPDS computer upgrades, it will be necessary to revise the BFN Data Point Library (DPL). This has been discussed with John Jolicoeur of your staff, and we will work with him to finalize the revised DPL before formal submission.

As discussed with Mr. Jolicoeur, enclosed is our revised response to Appendix B - NUREC 1394 applicable to SQN and BFN.

This revision reflects changing the data transmission frequency from 15 seconds to 30 seconds and updates the NRC requested points of contact for system operation.

We understand, based on conversations with Mr. Jolicoeur,- that our September 18, 1992 comments on the proposed generic letter regarding the ERDS test program were found acceptable and our request to move the SQN tests from week six on Thursdays to week four on Wednesdays vill be reflected in the final version.

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9302180251 930212 PCR ADOCK 05000259' F

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U.S. Nuclear Regulatory Commission Page 2 j.

February 12, 1993 i

i i

l No new commitments are contained in this submittal.

If you have j

questions, please telephone E. G. McKeown at (615) 751-4888.

I Sincerely, i

q t/1 i

Hark J.

s n

Hanager j

Nuclear Licensing and Regulatory Affairs i

Enclosure cc (Enclosure):

l Hr. John R. Jolicoeur j

ERDS Project Manager U.S. Nuclear Regulatory Commission-j Hail Stop HNBB 3206

{

Washington, DC 20555 i

i Hr. Di E. LaBargo, Project Manager j

U.S. Nuclear Regulatory Commission 1

One White Flint North 11555 Rockville Pike Rockville, Maryland 20852 i

i NRC Resident Inspector Browns Ferry Nuclear Plant A ti s la ma 5

NRC Resident Inspector Sequoyah Nuclear Plant

+

2600 Igou Ferry Road

. Soddy Daisy, Tennessee 37379-Mr. Thierry.H. Ross, Project Manager-

-U.S. Nuclear Regulatory Commission l

One White Flint North 11555 Rockville-Pike

{:

-Rockville, Maryland 20852'

[

Hr, B. A. Wilson, Project Chief

'U.S.-Nuclear Regulatory Commission Region II 101 Marietta. Street, NW, Suite 2900'-

Atlanta, Georgia 30323--

t

6 ENCLOSUg[

4 TENNESSEE VALLEY AUTHORITY RESPONSE TO APPENDIX B - NUREG 1394 I. Contacts A. Survey Coordinator Earl McKeown Nuclear Licensing LP 5B-C 1101 Market Street Chattanooga, TN 37402 (615)751-4888 B. Computer Hardware Specialist Martha L. Cantrell Plant Support Systems CST 4A-C 1101 Market Street Chattanooga, TN 37402 (615)?51-4806 C. System Software Specialist Same As B. Above D. Applications-level Software Specialist Kimberly E. Cook Plant Support Systems CST 4A-C 1101 Market Street-Chattanooga, TN 37402 (615)751-4807 E. Telephone Systems Specialist Jacinda B. Woodward Telecommunications CST SB-C 1101 Market-Street Chattanooga, TN 37402 (615)751-2022 g

TENNESSEE VALLEY AUTHORITY i

RESPONSE TO APPENDIX B - NUREG 1394 III. Selection of Data Feeders A. How many data feeders are there?

One.

B. Identify the selected data feeders and provide for each:

The Central Emergency Control Center (CECC) computer system is the selected data feeder to implement ERDS for Sequoyah unit 1, Sequoyah unit 2 and Browns Ferry Unit 2.

1.

Description of the categories of data points it will provide All the required data that is available on the plant SPDS computers and the requested meteorological data.

2. The rationale for selecting it.

The data feeder selected is the Central Emergency Control Center (CECC) computer system. This system was selected for the following reasons:

- The CECC computer system has access to all the data on the SPDS computer system for each operating unit as well as the meteorological data for each site.

- Less software needs to be written and maintained since only one system will require an initiation and data transfer program. Data transfer from the SPDS computers to the CECC is already available.

- Less expensive and shorter lead time to implement since no Design Change Request needs-to be written to install the link to the NRC.

Requires only one place for activating the ERDS.

interface. This will reduce the number of people that require training in the activation process.

TENNESSEE VALLEY AUTHORITY RESPONSE TO APPENDIX B - NUREG 1394 IV. Data Feeder Information 1.

Identification of Feeder

a. Name in local parlance and Acronym.

Central Emergency Control Center (CECC) b.

Is this the site time determining feeder?

Yes.

c. How often will this feeder transmit an update to ERDS.

Every 30 seconds.

2. Hardware / Software Environment

a. Identify the manufacturer and model number.

Digital Equipment Corporation Vax 4000, Model 200

b. Operating System VMS

c. What method of timekeeping (Daylight, standard, greenwich?)

Daylight / Standard

d. In what time zone is it located.

The CECC computer uses Central time for Browns Ferry and Eastern time for Sequoyah and Watts Bar.

s TENNESSEE VALLEY AUTHORITY RESPONSE TO APPENDIX B - NUREG 1394

- The CECC also has high speed links to the Sequoyah and Watts Bar simulators and will be networked with the CECC.

During REP drills data can be received from these systems in place of the live data. This would allow the NRC to receive simulated data during an REP exercise without installing additional links.

- As additional units such as BF3 or WB2 near fuel load or restart, no additional ERDS links will be required.

C. Which data feeder is the site time determining feeder?

a The CECC computer system controls the time that is displayed in the CECC and will drive time displays in the site Technical Support Centers. Data received from the plant SPDS computers is not time tagged. The CECC computer system will time tag the ERDS data prior to transmissions.

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TENNESSEE VALLEY AUTHORITY RESPONSE TO APPENDIX B - NUREG 1394

3. Data Communications Details

a. Can it provide Asynchronous serial data (RS-232-C) with full modem control?

Yes,

b. Ascii or Ebcdic?

ASCII.

c. Can it-transmit at 2400-bps?

Yes.

d. Does operating system support Xon/Xoff?

Yes, e.

If not why not.

f. Do any ports currently exist for ERDS linkup?

Yes.

4. Data Feeder Physical Environment and Management

a. Where located in terms of TSC, EOF,_ control room?

The CECC computer system resides at the EOF in Chattanooga,

b. Is it protected for loss of electricity?

Yes, the CECC is provided with diesel power should the electricity fail. The new computer systems will be on a uninterruptable power source as well,

c. Is there a human operator for the data feeder?

Yes.

l'.

How many hours attended?

The Operations Duty Specialist monitors system availability on a 24 per day basis and is available to activate the ERDS.

.