ML20043B658

Requests Schedular Extension of Two Human Engineering Deficiencies Re CRT Displays W/Current Ramtek Sys & Approval to Leave Seven Human Engineering Discrepancies Accepted as Is.

ML20043B658
Person / Time
Site:	LaSalle
Issue date:	05/25/1990
From:	Morgan W COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
0957T, 957T, NUDOCS 9005310071
Download: ML20043B658 (4)

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May 25, 1990 '

U.S. Nuclear Regulatory Commission Attn t - Document Control Desk  !

Washington, D.C. 20555 i

Subject:

LaSalle County Station Units 1 and 2 Detailed Control Room Design Review NRC Docket N_ m _30-373 and 50-374 r

Reference:

P.C. Shemanski letter to T.J. Kovach dated June 28, 1989 (Safety Evaluation Report for LaSalle County Station Units 1 and 2 DCRDR).

Dear Sir:

Reference (a) transmitted the Safety Evaluation Report for LaSalle i County Station Units 1 and 2, Detailed Control Room Design Review.

Commonwealth Edison is requesting for the schedular extension of two HED's and the acceptance to leave " accepted as is" seven HED's that were earlier committed to and approved by the above-mentioned reference.

The following attachment will identify each HED, problems associated with it, the justification for slippage of schedule, old commitment date, new commitment date and safety classification.

Please direct any questions you may have regarding this matter to this office.

Very truly yours, b ggi Sq l- W.E. organ l' Nuclear Licensing Administrator cc: R. Pulsifer - Project Manager, NRR Senior Resident Inspector - LSCS

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90G3310071 900525 PDR P ADOCK 05000373 PDC 8M /

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AITACEMENI COMMITMENTS DEFERRED OR CANCILLED l 1

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• HED. #: 237 CRTs Category: 20 ,

Originally accepted as is. Problem centered on use of seven picture elements per complex symbol height. Changed in the Technical Evaluation.

Report (TER) dated August 21, 1987 which expressed concern about the synergistic effects of these HED's with others (inappropriate use of colors and abbreviations). In view of this concern all HED's associated with the CRT's were converted to "2nd-Refuel" items. The HED's concerning colors and abbreviations have been resolved. Improvements to the resolution of the CRT displays are not possible with the current Ramtek CRT System. If the.Ramtek system is replaced or upgraded in the future, the CRT resolution will be improved.

t Original Commitment Date: Accept As Is TER Commitment Date: L1/2R03 (U-1 Sept. 89, U-2 June 90)

New Commitment Date: Accept As Is 4 L

• HED #: 240 CRTs ~,

Category: 20 Originally accepted as is. Problem centered on use of 5 picture elements per character height, rather than the recommended 10. . Changed in the TER dated August 21, 1987 which expressed concern about the synergistic effects of these HED's with others (inappropriate use of colors and abbreviations). In view of this concern all HED's associated with the CRT's were converted to "2nd-Refuel" items. The HED's concerning colors and abbreviations have been resolved. Improvements _to the resolution of the CRT displays are not possible with the current Ramtek-CRT system. If the Ramtek system is replaced or upgraded in the future, the CRT resolution will be improved.

Original Commitment Date: Accept As Is TER Commitment Date: L1/2R03 (U-1 Sept. 89, U-2 June 90)

New Commitment Date: Accept As Is l

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^* ' HED # 308 CRTs

- Category:- 20 Originally accepted as is. Problem centered on use of a 5 x 7 dot matrix rather than a 7 x 9 dot matrix for the CRTs. Changed in the TER dated August 21, 1987 which expressed concern about the synergistic effects of these HED's with others (inappropriate use of colors and abbreviations).

In view of this concern all HED's associated with the CRT's were converted to "2nd-Refuel" items. The HED's concerning colors and abbreviations have been resolved. Improvements to the resolution of the CRT displays are not possible with the current Ramtek CRT system. If the Ramtek system is replaced or upgraded in the future, the CRT resolution will be improved.

Original Commitment Date: Accept As Is TER Commitment Date L1/2R03 (U-1 Sept. 89 U-2' June 90)

New Commitment Date: Accept As Is

• HED #: 309 CRTs ,

Category: 20 l Originally accepted as is. Problem centered on CRT displays not meeting the 50 resolution elements per inch required for graphics. Changed in the l TER dated August 21, 1987 which expressed concern about the synergistic effects of these HED's with others (inappropriate use of colors and abbreviations). In view of this concern al1~HED's associated with the CRT's were converted to "2nd-Refuel" items. The HED's concerning colors and abbreviations have been reco1ved. Improvements to the resolution of the CRT displays are not possible'with the current Ramtek CRT system. If the Ramtek system is replaced or upgraded in the future, the CRT resolution will be improved.

Original Commitment Date: Accept As Is TER Commitment Date: L1/2R03 (U-1 Sept. 89, U-2 June 90)

New Commitment Date: Accept As Is

• HED #: 422 SPDS Category: 20 Original response was to defer disposition until the SPDS review was performed. Problem centers on the poor readability of the display. This HED is linked-directly to Generic Letter 89-06 and its resolution.  ;

Original Commitment Date: Defer until SPDS Review New Commitment Date: Implement with GL 89-06 resolution t I

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.:.s HEDs 261 and 487 anolv to'the same subig 1 )

• HED # 261 Control Switch t u Category: 20 ,

Committed.for 2nd refueling outage to add a control switch for the 1E51-F091. valve. This valve provides a bypass around the steam supply y from RCIC to the RHR heat exchangers for the mode of RHR known as steam '

condensing. This was to be installed on Unit 1 to match the already L installed switch on Unit 2. System design concerns about the steam condensing mode have caused this mode to be rarely used, and has not been used since 1983. It is unlikely that the valve will be removed since it is possible (although not probable) that the Steam Condensing Mode could be used in the future. Commonwealth Edison's Production Training Center has addressed the unit differences in the Licensed Operator Training Class (simulator)-to ensure that individuals are not confused by their differences between the two units. This difference has been deemed not a source of confusion.

Original commitment date: L1/2R03 (U-1 Sept. 89 U-2 June 90)

New commitment date: Accept As Is l I

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• HED #: 487 Valve Category: 2B

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l Committed for 2nd refueling outage to add the E51-F091 valve to Unit 1 to l match the already installed valve on Unit 2.

- See Above Discussion - j Original commitment date: L1/2R03 (U-1 Sept. 89, U-2 June 90) l New Commitment date: Accept As Is L

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• HED #: 431 Annunciators j i

Category: 2B 1

Original commitment was to modify alarm logic for " Channel A/B turbine  !

control and stop valve trip bypass" so that the alarm comes in only when both subchannel relays are picked up. Station is proposing to leave alarm

" logic currently as is, and provide reflash for the annuniciators so that the operators will be able to determine which subchannel has picked up by simply consulting the alarm typer. The annunciator windows have already been re-engraved to alleniate possible confusion.

Original Commitment Date: Ll/2R03 (U-1, Sept. 89, U-2, March 90)

New Commitment Date: L1/2R04 (U-1 April 91, U2 Jan 92)

• HED #: 499 Annunciators Category:- 20 Original commitment was to provide reflash for the Hi Suppression Chamber Pressure /H1 Drywell Air Temperature annunciator on the PM13J panel. This HED was inadvertently missed when the new IPM13J panel was installed, but was completed for the 2PM13J.

Original Commitment Date: L2R03 (February 1989)

New Commitment Date: L2R04 (April 1991) 0957T4