ML20207A640
| ML20207A640 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 12/04/1987 |
| From: | Kalman G Office of Nuclear Reactor Regulation |
| To: | Andognini G SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| References | |
| TAC-64359, NUDOCS 8712090039 | |
| Download: ML20207A640 (16) | |
Text
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December 4,1987 Docket No.: 50-312
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Mr. G. Carl Andognini Chief Executive Officer, Nuclear i
Rancho Seco Nuclear Generating Station 14440 Twin Cities Road l
Herald, California 95038-9799 l
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Dear Mr. Aridognini:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION, ICS/NN!
The staff is perforwing a review of the Integrated Control System and Non-Nuclear Instrurentation systaes as a part of the Safety Evaluation Report related to the restart of Rancho See Nuclear derating Station. During this I
review, we have identified areas where additional information is required, t
Please provice the information requested in the attachment to this letter f
I as soon as possible so that our review ca3 be completed wit'out impacting your restart schedule.
i i
/s/
i i
t George ralinan, Project Manager Project Directorate V Division of Peactor Projects - Ill, i
IV, Y and Special P'rojects i
i Office of huclear Rea.: tor Regulation i
Enclosure:
As stated j
OISTRIBUTION Docket file ~
OCG - Fethesde 3
hRC & Local PDRs EJordan POV Feading JFartlow
. 0Crutchfield ACRS (10) g i
OFC DRSP:fd D
ORS" NAME Gralmfrt:CW ton i
DATEI?/$/81 12
/87 i
OFFICIAL RECORD COPY 7 -) / I M ((Nf vi 4
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2*SB PE0 VEST FOR INFORMATION t
RANCHO SECO l
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l By letter dated October 30, 1986 (JEW-86-652), the staff was provided with i
j infomaticn associated with indication and ccetrols independent of ICS/hMI l
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power. The information supplied to date does not sufficiently address the l
j adecuacy of the backup (independent) instrumentation and controls available
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to the control room operators for events related to the loss of ICS/NN!
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power. The staff has subsequently developed a table (attached) which 1
identifies in more detail what inforration (specific colurn categories) is j
recuired to cor)plete our review in this area. The staff has partially I
j filled in the table based on its understanding of the Rancto Seco design.
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l lhe District is requested to complete and/or nodify the existing information i
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supplied for each column of the table as necessary to accurately reflect to f
the st6ff the proposed Pancho Seco design planned for plant restart.
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Pa ge I Cackup ( Alternate) Indications.
- Controls Used by the Control Room Operot:rs ICS/NNI follo.ing a Loss o f ICS/.'al Po.er Non-Sa fety Pela ted Indica tions and Controls in the Control Room that Become Inoperable Sa fety Classification Periodic Surveillance Testing Indications and Controls Used to Upon Loss of ICS/N*.I Po.er and Location to Verify Operability of Backu; Achieve Plant Indications and Controls Shutdown Hot Cold Safety Related
'ean-Sa fety Related Shutdown Shutdo.n Frequency Control DocumenG INDICAT!0'.
OT5". A Level o SPDS o H4BS Yes Yes o Technical Spec.
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(Full Range) o IDAD5 (SPDS)
(Startup Range)
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o HICO (H2SD)
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(HISS) 0 ICA05 o Bailey 855 o H25D o Admin. Procedge (EFIC)
Ma nual o HISS (H4BS)
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(IDADS)
(HICO)
OTSG B Level Sare as for Same as for Yes Yes Same as for OTSG (Operate Range)
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(Wide Range)
OTSG A Pressure o H25D o H485 Yes Yes o Technical Spec.
o SPDS (ETIC) o HlC0 (H2SD) (HISS) o IDAD5 o H155 o Bailey 855 o Admin. Procedur Manual (H4BS) (HICO)
OTSG B Pressure Same as for Same as for Yes Yes Same as for OTSG o SPDS OTSG A fressure OTSG A Pressure A Pressure o IDADS o Bailey 855
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Vege 3 Backup (Alternate) Indications and Controls Used by the Control P.com Operators ICS/ u!
Follo.ing a toss of ICS/N'il Po.er Non-Sa fety Eelated Ir. dica tions and Controls in the Control Indications and Room that Become Ino;erable Safety Classification Periodic Survet11ance Testing Controls Used to Upon loss of ICS/h'il Po.er and Location to verify Operab111ty of Backu-Achieve Plant Indications and Controls Shutdown ISafetyRelated Control Docum Hot Cold I
"on-Sa fety Related Shutdown Shutdown Frequency I'iD I CAT I C*i Reactor Coolant Ma6eup o SPDS o ICADS Yes Yes o Technicah Spec.
Tank Level o H250 o H4BS (SPDS) (H2SD) o ICADS (Remote o HlCO o Admin. Procedus
,,. m,,5 Autdoda y.a nual P3"*ll (IoADS) (H4sS)
(HIC 0)
Reactor Coolant P.abeup Flow o SF05 o HlC0 Yes Yes o Tect.nical Spec.
(SPDS) o Admin. Procedur Y.a nual (H100)
Reactce 'colant Letdown Flow o SPDS o IDAD5 Yes
. ICADS o H1C0 o Bailey 855
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rc9e 5' Cackup ( Alternate) Indicat e ns and Controls Used by the Control Room Cperaters aLS/h%I following a toss of ICS/NNI Power hon-Safety Pelated Indica!! ors and Controls in the Control Indications and P.cos that Beco-e Inoperatie Safety Classificatic" Periodic Sur-etilance Testing Controls used to Upor. Loss of ICS/%%I Po.er and Location to Y&rify Operability of Backup Achieve Plant andications and Controls Shutdown Hot Co1J Safety Related Non-Sa fety Pelated Shutdown Shvidown Frequency Control Docu=ent INDICATION Pressurizer Te perature o ICADS o Bailey 855 Peactor Coolant System Loop A Flow Reactor Coolant Syst(m Loop B Flow Reactor Coolant System Loop A di o SPDS o IDADS Reactor Coolant System Loop B di o SPDS o IDADS I
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ragt 6 Backup ( Alternate) Indications and Controls Used by the Control Room Operators ICS/NNI following a toss of ICS/NNI Power Non-Safety Related Indications and Controls in the Control Indications and Room that Become Inoperable Safety Classification Per'sdic Surveillance Testing Controls used to Upon Loss of ICS/hNI Power and Location
., verify Operability of Backap Achieve Plant IMication:; and Controls Shutdown Hot Colo Safety Related Non-Sa fety Related Shutdown Shutdown Frequency Control Document INDICATION Unit Tave Loop A Tave Loop B Tave l
Reactor Coolant System Pressure (Low Range) o SPDS l
1 Reactor Coolant Pump 1
Seal Pressure j
o IDADS o Bailey Reactor Coolant Makeup Tank Pressure e
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Backup (Alternate) Indications and Controls Used by the Control Rooa Optrators ICS/hMI Following a Loss of ICS/NNI Powec Non-Safety Related Indications ond Controls in the Control Indications and Periodic Surveillance Testing Room that Become Inoperable Safety Classification Controls Used to to verify Operability of Backup Upon Loss of ICS/NNI Power and Location Achieve Plant Indications and Controls Shutdown Hot Cold I
_/be-Sa fety 9clated__
Safety Related Shuticzn Shutdown Frequcacy C.ont rol Docu=ent-INDICATION Reactor Coolant System Makeup Pressure Letdown Tempera ture Decay Heat Loop B Temperature Main FW Yalve A dP l
0 IDADS o Bailey 855 i
i Main FW Valve B dP o IDADS o Bailey 855 l
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Page 6 Backup ( Alternate) Indications and Controls Used by the Control Room Operators ICS/NNI following a toss of ICS/tiNI Power Non-Safety Related Indications and Controls in the Control Indica ions and Room that Become Inoperable Safety Classification Periodic Surveillance Testing Upan Loss of ICS/NNI Power and Location A hie e P ant Indications and Controls Shutdown I Safety Related Hot Cold Pbn-Sa fety Related 9mtdown Shutdown Frequency Control Document INDICATION Main FW Loop A Flow o SPDS o IDADS o Bailey 855 Main FW Loop B Flow o SPDS o IDADS o Bailey 855 Startup FW Loop A Flow I
o IDADS o Bailey 855 i'
Startup FW Loop B Flow o IDADS o Bailey 855 PRT Temperature PRT Pressure
Sugs y Backup ( Alternate) Indications and Controls Used by the Control Room Operators ICS/NNI Following a loss of ICS/NNI Power Non-Safety Related Indications and Controls in the Control Indications and Room that Become Inoperable Safety Classification Periodic Surveillance Testing Controls Used to Upon Loss of ICS/NNI Power and Location to Verify Operability of Backup Achieve Plant Indications and Controls Shutdown i Safety Related Hot Cold ibn-Sa fety Related 9mtdown Shutdown Frequency Control Document INDICATION i
i Neutron Error Generator Frequency Makeup Filter dP o HlC0 Yes Secondary Steam Temperature o HlCO Yes (Loop A) o IDADS o Bailey 855 Secondary Steam Temperature o HICO Yes (Loop 8) o IDADS o Bailey 855 Main feedwater Flow (Loop A)
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Page 10 Backup ( Alternate) Indications and Controls U ed by the Cuntrol Room Operators ICS/NNI Following a Loss of ICS/NNI Power Non-Safety Related Indications and Controls in the Control Indications and Room that Become Inoperable Safety Classification Periodic Surveillance Testing Controls Used to Upon Loss of ICS/NNI Power and Location to Verify Operability of Backup Achieve Plant Indications and Controls Shutdown l
Hot Cold j
Safety Related Non-Sa fety Related Shutdown Shutdown Frequency Control Document i
INDICATION Main Feedwater Flow (Loop B)
Main FW Flow (Startup Range)
(Loop A) l Main FW Flow (Startup Range)
(Loop B)
I Main FW Temperature (Loop A)
Main FW Temperature (Loop B) 1 1
rage la Backup (Alternate) Indications and Controls Used by the Contro! Room Op2rators ICS/hMI Following a toss of ICS/NNI Power Non-Safety Related Indications Room ha Secore Ino erab e Safety Classification fgnro nd Upon Loss of ICS/NNI Power and Location o Verify Ope abi ty of Ba !up Used o Achieve Plant Indications and Controls Shutdown Hot Cold Safety Related
'bn Sa f ety Related Shutdown Shutdown Frequency Control Document I
INDICATION Power Range i
j Total FW Flow 1
l Average Main FW l
Tempera ture l
Main Steam Header Pressure i
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Pu3e il Backup ( Alternate) Indications and Controls Used by the Control Room Optrators ICS/NNI Following a Loss of ICS/NNI Power Non-Safety Related Indications and Controls in the Control Indications and Room that Become Inoperable Safety Classification Periodic Surveillance Testing Controls used to Upon loss of ICS/NNI Power and Location to Verify Operability of Backup Achieve Plant Indications and Controls 1
Chutdown l
Hot Cold g Safety Related Non-Sa fety Related Shutdown Shutdown Frequency Control Document 1
CONTROL j
Pressurizer Heaters Reactor Coolant Pump Seal Injection Letdown Flow Pressurizer Spray Power Operated Relief Valves (porv)
Makeup Flow ll
va ge s3 Backup ( Alternate) Indications and Controls Used by the Control Room Operators ICS/NNI Following a Lors of ICS/NNI Power Non-Sefety Related Indications
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.e no e a Safety Classification fo Upon Loss of ICS/NNI Power and Location o
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Achieve Plant Indications and Controls Shutdown I Safety Related Hot Cold
!bn-Sa fety Related Shutdown Shutdown Frequency Control Document C0FROL Turbine Bypass Valves o H2SD Loop A o HlRI Turbine Bypass Valves o H2SD Loop B o HlRI Main FJ Loop A No No Valves (Control)
(Startup)
(Block)
Main F4 Loop B No No Valves (Control)
(Startup)
(Block)
Main P4 Loop A No No Pump Main PJ Loop B No No Dump
rage 14 Backup ( Alternate) Indications and Controls Used by the Control Room Operators ICS/NNI following a Loss of ICS/NNI Power Non-Safety Related Indications and Controls in the Control Indications and Room that Beccme Inoperable Safety Classification Periodic Surveillance Testing Controls Used to Upon Loss of ICS/NNI Power and Location to verify Operability of Backup Achieve Plant Indications and Controls Shutdown I
Hot Cold Safety Related Non-Safety Related Shutdowa Shutdown Frequency Control Document i
CONTROL Auxiliary Steam l
Reducing Station Generator Pulser i
Control Rod L-ives j
Turbine EHC I
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