ML18030A322
| ML18030A322 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 07/06/1981 |
| From: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| PLA-860, NUDOCS 8107100192 | |
| Download: ML18030A322 (4) | |
Text
REGULATORY INFORMATION DISTRIBUTION SYSTE I (RIDS)
ACCESSION NBR!8107100192 DOC.DATE! 81/07/06 NOTARIZED!
NO DOCKET ¹ FACIL"t50 387 Susquehanna Steam Electric StationP Unit 1P Pennsylva 05 50 388 Susquehanna Steam Electric Station<
Unit 2', Pennsylv 500038 AUTHBYNAME'UTHOR AFFILIATION CURTIS'
~ WB Pennsylvania Power.
8 Light Coi REC IP ~ NAMET RECIPIENT AFFILIATION SCHWENCERPA ~
Licensing Branch 2
SUBJECT! Notifies that installation of addi control room dc power sys indication L alarms imposed by SER Section 8 ~ 3~2 is not reau$ red in either IEEF.. 3,8 1974 std or Reg Guide 1 ~ 47.
Present procedures comply w/intent of SER reau$ rements.
DISTRIBUTION CODE:
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TITLE! PSAR/FSAR AMDTS and Related Correspondence NOTES!Send I8E 3 copies FSAR L all'amends, 1
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TWO NORTH NINTH STREET, ALLENTOWN, PA. 18101 PHONEr t215) 770-5151 NORMAN W. CURTIS Vlcc Presldenl-Engineering IL Construction.Nuclear 7705381 JUL 06 1981 Zf
'~~88 Mr. A. Schwencer, Chief Licensing Branch Number 2
Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555 SUSQUEHANNA STEAM ELECTRIC STATION CONTROL ROOM DC INDICATION ER 100450 FILE 841-.2 PLA-860 DOCKET NOS.
50-387 50-388
Dear Mr. Schwencer:
The, Susquehanna SER section 8.3.2 imposes a new requirement on Susquehanna SES to have additional DC power system indication and alarms installed in the plant control room.
This new monitoring requirement was not identified to us prior to the writing of the SER.
Also, the new DC system requirement'as not identified as an outstanding issue in Section 1.9 of the SER but was imposed as a license condition.
Susquehanna has fully complied with the design requirements embodied in IEEE 308, 1974 and Regulatory Guide 1.47 for DC system monitoring.
In neither the IEEE standard nor Ebgulatory Guide 1.47 is the requirement to install the specific equipment in the Control Room, as the NRC states.
Susquehanna's design has followed a logical approach in this monitoring scheme as well as in many others.
For a system in which the operator has been provided no remote control and must send an operator to take local control, a general trouble alarm has been provided in the control room.
Upon receiving a group trouble alarm, the operator will send someone to the DC room to decipher the problem and to take correcteve actions.
This scheme is in full compliance with the referenced standards.
In addition to complying with our commitments, the scheme contributes to the overall goal of minimizing unnecessary equipment and annunciation in the control toom This is an impor.tant goal or human factors engineering.
goo 8107100192 810706 PDR ADOCK 05000387 E
PDR PENNSYLVANIA POWER IL LIGHT COMPANY
Mr. A. Schwencer Page 2
To augment the DC system monitoring, PL's operating staff currently plans to check the operational readiness of the DC system by local visits and recording vital data every 8-.hour shift.
This scheme provides the same level'of surveillance to assure DC system availability as would an indication scheme applied in the control room.
We do agree that the additional trouble alarms cited in this section merit a review for implementation.
In summary, Susquehanna's DC surveillance complies
.with the requirements of the IEEE 308-1974 standard and Regulatory Guide 1.47.
In addition, it fully meets the intent of the NRC's requirements stated in the SER and contributes to human factors engineering goals.
PPSL identified our position on thi's item in an SER meeting in Bethesda, MD on April 14, 1981.
During this meeting our NRC Project Manager took as an action item to review Susquehanna's position.
We have received no feedback on the progress of the NRC review.
PP&L will be available to meet to discuss and resolve this item.
Very truly yours, N,
W. Curtis Vice President-Engineering and Construction-Nuclear CTC/mjm cc:
R. M. Stark NRC
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