ML18030A257
| ML18030A257 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 04/15/1981 |
| From: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.D.3, TASK-TM PLA-724, NUDOCS 8104170442 | |
| Download: ML18030A257 (4) | |
Text
ACCESSION N'>R FACIL:50 367 50-3oe A U Trl ~ iIAHE CURTIS g 'I ~ ~v RECIF, MAi'E YOUNGBLOODzB REGULATORY INFORI1ATION DISTRIBUTION SYSTE I (RIDS)
~ J ~
- 61041 70442 DUC ~ PATE: 81/04/15 NOTARIZED: 'IO Susquet anna Steam Electric Station<
Unit
)< Pennsylve Susquehanna Steam "lectric Stat>one dnit 2~ Pennsylva AUrHOR AFFILIATION Pennsylvania Power R, Light Co ~
REC IP IKIIT AF F ILI ATION Licensing Branch 1
DOCKET 05000387
SUBJECT:
For wards clarification on SRV position {ndicationiin response to NicC request at. G)04)4 I eoting ~ SRV acoust',c monitoring sys will be safety grade,No backup sys necessaryi per NUREG 0737, DISTRIBUTION CODE.:
8001S COPIES RECEIVED:LTR ENCL SIZE:
TITLE: PSAR/FSAR AMDTS and Related Corresoondence NOTES:Send Ilt.E 3 copies FSAR L all
A/D L)CENSNG RUSHBROOKpH ~
INTERNAL: ACCID EVAL BR26 CHEMI ENG BR Od CORE PERF oR 10 EMERG PREP 22 GEOSCI ENCES 14 HYD/GEO BR 15.
I LE 06 LIC QUAL BR vIECH ENG BR 18 NRC PDR 02 OP LIC BR PROC/TST REV 20 RAD ESS BR2?
01 STRUCT ENG BR25 COPIES LTTR ENCL 0
1 0
1 1
1 1
1 1
1 0
1 2
2 3
1 1
1 1
1 1
1 1
1 1
1 REC IP IENT ID CODE/NAHE YOUNGBLOODgB STARKpR ~
04 AUX SYS BR 07 CONT SYS BR 09 KFF TR SYS BR12 EQUIP QUAL hR)3 HUi> FACI'NG BR IIt,C SYS BR 16 LIC GUID BR HATL ENG BR 17 "IP A OELD POikER SYS BR )9 QA BR 21 RKAC SYS RR 23 SIT ANAL BR 24 SYS INTERAC BR COPIES LTTR E."ICL 1
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1 1
1 1
1 1
1 3
1 1
1
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1 1
1 0
1 0
~ 1 1
1 1
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'LPDR 03 TOTAL NUMBER OF COPIES REQUIRED:
LTTR'7 ENCL 51
0
~~.
387 3T TWO NORTH NINTH STREET, ALLENTOWN, PA, 18101 PHONEr t215) 770-5151 NORMAN W. CURTIS Vice President-Engineerintt 8 Cons;rection-Ncctear 7705381 Mr. B.J. Youngblood, Chief Licensing Projects Branch 81 Division of Project Management U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Susquehanna Steam Electric Staiton Clarification on SRV Position Indication ER100450 Fil e 841-12 PLA-724 April 15, 1981
Dear Mr. Youngblood:
The attached section is provided in response to a request for clarification during a meeting with the NRC on April 14.
The SRV acoustic monitoring system will be safety grade.
Therefore no backup system is necessary, as stated in NUREG-0737.
Very truly yours, N.W. Curtis Vice President-Engineering and Construction-Nuclear cc:
R,M. Stark bcc:
W. E.
B.A.
C.T.
R.J.
N.W. Curtis Barberich Snapp Coddington Shovlin PENNSYLVANIA POWER 8
LIGHT COMPANY
X.1.24.3 Statement of Response Each of the 16 safety/relief valves (SRVs) will be provided with a safety grade acoustic monitoring system to detect flow through the valve.
An acoustic sensor will be mounted on the discharge piping, downstream of each valve.
The monitors will be grouped into two divisions with 8 valves each.
Each division will have group annunciation for valve opening and for division loss of power.
A red ani>unciator window will be provided for valve opening and white annunciator window for loss of power on a front row control panel for these annunciations.
Each division will be powered from a 1E vital instrument bus.
Individual indications of an open valve will be provided by a red light (1 light for each valve) on front row control room panel 1C601.
Indi-vidual indication of valve position is also available on a back row con-trol room panel where the signal conditioning instruments are located.
The acoustic monitoring system is designed to be safety grade.
This equipment has been qualified to IEEE-344-1975, IEEE-323-1974 and NUREG-0588 in accordance with the Commission order of May 23, 1980
( CL1-20-81).
Additional design information will be presented in Subsection 7.6.la.4.3 7.
A human factors review of the front row control panel on which these indicators are located has been completed.
This same analysis is being applied to the SRV position indicators which are bei ng added to this panel.
Installation of this system will be complete by fuel load.
For modifications to plant systems and components such as the SRV position indicators, procedures are developed or revised as necessary and appropriate training is provided whtn the 'final design documents are approved and the equipment is available for use.