ML20151D548

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Rev 1 to Plant-Specific Technical Guideline 6, Alternate Level Control
ML20151D548
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 05/11/1988
From: Newson C
LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20151D407 List:
References
PROC-880511-04, NUDOCS 8807250157
Download: ML20151D548 (9)
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Text

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M C --1 SHOREHAM NUCLFfk POWER STATION PLANT SPECIFIC TECHNICAL CUIDELINy PSTG #6 ALTERNATE LEVEL CONTROL REVISION F0: 1 l

PREPARED BY: 7  % DATE: _ 2[ [

REVIEWED BY: hkied(/I Mer m o% A DATE: /1 h

! OPERATING ENGINEER APPROVAL: M a DATE: r' v[#

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SHOREHAM NUCLEAR POWER STATION Plant Specific Technical Guidelines Contingency # 1 Alternate Level Control

'EPG Step:

If while executing the following steps:

o Any control rod cannot be determined to be inserted to or beyond position [02 (Maximum Suberitical Banked Withdrawal Position)] and it has not been determined that the reactor will remait. shutdown under all conditions without boron, enter (procedure developed from Contingency #5].

o RPV water level cannot be determined, enter (procedure developed from Contingency #4).

o RPV water level is increasing, enter (procedure developed from the RPV Control Guideline] at (Step RC/L).

o RPV water level drops below [-146 in. (ADS initiation setpoint)),

prevent automatic initiaticn of ADS.

SNPS PSTG Step:

If while executing the following steps:

o Any control rod cannot be determined to be inserted to or beyond position 02 and it has not been determined that the reactor will remain shutdown under all conditions without boron, enter procedure developed from Contingency #5.

o RPV water level cannot be determined, enter procedure developed from Contingency #4.

o 'RPV water level is increasing, enter procedure developed from the RPV Control Guideline at Step RC/L.

o RPV water level drops below -132 in., prevent automatic initiation of ADS, by placing the ADS Inhibit switch to INHIBIT.

Justification for Differences / References Guidance added as to how to prevent automatic initiation of ADS Hsximum Subcritical Banked Withdrawal Position: NED Appendix C Calculation No. C-NFD-200 ADS initiation setpoint: Tech Spec Table 3.3.3.2 PSTG #6 Rev. 1 Page 1

r C

SHOREHAM NUCLEAR POWER STATION Plant Specific Technical Guidelines Contingency i 1 Alternate Level Control EPG Step:

If while executing the following steps primary containment water level and suppression chamber pressure cannot be maintained below the Maximum Primary Containment Water Level Limit, then irrespective of whether adequate core cooling is assured terminate injection into the RPV from sources external to the primary containment until primary containment water level and suppression chamber pressure can be maintained below the Maximum Primary Containment Water Level Limit.

SNPS PSTG Step: ,

If while executing the following steps primary containment water level and suppression chamber pressure cannot be maintained below the Maximum Primary Containment Water Level Limit, then irrespective of whether adequate core cooling is assured terminate injection into the RPV from sources external to the primary containment until primary containment water

. level and suppression chamber pressure can be maintained below the Maximum Primary Containment Water Level Limit.

Justification for Differences / References Maximum Primary Containment Water Level Limit - NED Appendix C calculation No.

C-NAD-268 l

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l PSTG #6 Rev. 1 Page 2 i

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SHOREHAM NUCLEAR POWER STATION Plant Specific Technical Guidelines Contingency # 1 Alternate Level Control EPG Step:

Cl-1 Initiate IC.

SNPS PSTG Step:

C1-1 Deleted.

Justification for Differences / References SNPS does not have an Isolation Condenser.

PSTG #6 Rev. 1 Page 3 <

SHOREHAM NUCLEAR POWER STATION Plant Specific Technical Guidelines Contingency # 1 Alternate Level Control EPG Step' Cl-2_ Line up for injection, start pumps, and irrespective of pump NPSH and vortex limits, increase injection flow to tie maximum with 2 or more of the

.........s tajection sybsystems:

o Condensate o HPCS o LPCI-A with injection through the heat exchanger as soon as possible.

o LPCI-B with injection throu c h the heat exchanger as soon as possible, o LPCI-C with injection through the heat exchanger as soon as possible, o LPCS-A o LPCS-B If less than 2 ef the injection subsystems can be lined up, commence lining up as many of the following alternate injection subsystems as possible.

[o RHR service water crosstie )

[o Fire System )

[o Interconnect 1ons with other units ]

6 ECCS keep-full systems ]

[o SLC (test tank) )

[o SLC (boron tank) ]

SNPS PSTG Step:

Cl-2 Line up for injection, start pumps, and irrespective of pump NPSH and vortex limits, increase injection flow to the maximum with 2 or more of the following injection subsystems:

o Condensate

! 'FCI-A with injection through the heat exchanger as soon as possible, o LPCI-B with injection through the heat exchangir as soon as possible.

PSTG #6 Rev. 1 Page 4 i

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P SHOREHAM NUCLEAR POWER STATION 1

, Plant Specific Technical Guidelines Contingency i 1 Alternate Level Control SNPS PSTG Step:

(Con't) o Core Spray A o Core' Spray B If less than 2 of the injection subsystems can be lined up, commence lining up-as many of the following alternate injection subsystems as possible:

o RHR service water crbsstie (Ultimate Cooling) o Fire Main to Ultimate Cooling l o ECCS connections from condensate transfer o SLC (test tank) o SLC (boron tank)

Justification for Differences / References Deleted HPCS (N/A to SNPS)

Deleted LPCI-C since Shoreham only has 2 LPCI loops Changed "LPCS" to Core Spray since LPCS is only a pertinent title for plants with HPCS Deleted Interconnections with other units since SNPS is a single unit plant.

. Clarified the alternate injection subsystems.

PSTG #6 Rev. 1 Page 5

e SHOREHAM NUCLEAR POWER STATION

, Plant Specific Technical Guidelines Concingency i 1 Alternate Level Control EPG Step:

Cl-3 If RPV pressu?e is above [87 psig (highest RPV pressure at which the shutoff head of a low-water-quality alternate injection subsystem (excluding SLC) is reached)]:

If while executing the following steps RPV pressure drops below [87 psig (highest RPV pressure at*which the shutoff head of a low-water-quality alternate injection subsystem (excluding SLC) is reached)), continue in this procedure at [ Step C1-4].

SNPS PSTG Step:

<.1 Cl-3 If RPV pressure is above 145 psig:

If while executing the following steps RPV pressure drops below 145 psig, d continue in this procedure at Step Cl-3.

' Justification For Differences / References Highest RPV pressure at which the chutoff head of a low-water-quality alternate injcction subsystem is reached: Service Water Pump Curve BCN 11600.02-2.23-23 through 26, Specification No. SH1-61 for Condensate Transfer Pump Information, SWEC Drcwing 11600.02-10.21-06 for Electric and Diesel driven fire pump.

PSTG #6 Rev. 1 Page 6

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, SHOREHAM NUCLEAR POWER STATION

. Plant Specific Technical Guidelines Contingency # 1 Alternate Level Control EPO Stept Cl-3.1 If no injection subsystem is lined up for injection with at least one pump running, start pumps in alternate injection subsystems which are lined up i for injection.

C1-3.2 When RPV water level drops to [-164 in. (top of active fuel)]:

o If any system, injec, tion subsystem or alternate injection subsystem is lined up with at least one pump running, EMERGENCY RPV DEPRESSURIZATION IS REQUIRED.

o If no system, injection subsystem or alternate injection subsystem is lined up with at least one pump running, STEAM COOLING IS REQUIRED.

SNPS PSTG Step:

C1-3.1 If no injection subsystem is lined up for injection with at least one pump running, start pumps in alternate injection subsystems which are lined up for injection.

C1-3.2 When RPV water level drops to -158 in. (Top of Active Fuel):

o If any system, injection subsystem or alternate injection subsystem is lined up with at least one pump running, EMERGENCY RPV DEPRESSURIZATION IS REQUIRED.

o If no system, injection subsystem or alternate injection subsystem is lined up with at least one pump running. When RPV level drops to -200 l< }

in. EMERGENCY DEPRESSURIZATION IS REQUIRED.

Justification For Differences / References I;.. . svad bullet has been altered to include the Steam Cooling Contir.gency in this stop. As specified in EPG Contingency #3, Emergency Depressurization is required when RPV level drops to the Minimum Zero Injection RPV water level. The operator would enter Contingency #2 from RC/P override #3.

Top of Active Fuel: Tech Spec Figure B 3/4 3-1 Minirum Zero Injection RPV water level - NED Appendix C Cale C-NAD-270 ll (conservatively rounded up for human factors concerns),

i PSTG #6 Rev. 1 Page 7

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<e SHOREHAM NUCLEAR POWER STATION

.. Plant Specific Technical Guidelines Contingency # 1 Alternate Level Control EPG Step:

Cl-4 When RPV pressure drops below [87 psig (highest RPV pressure at which the shutoff head of a low-water-quality alternate injection subsystem (excluding SLC) is reached)):

C1-4.1 Line up for injection, start pumps, and irrespective of pump NPSH and vortex limits, increase injection flow to the maximum with all systems and injection subsystems.

Cl-4.2 When RPV water level drops to [-164 in. (top of active fuel)),

EMERGENCY RPV DEPRESSURIZATION IS REQUIRED; line up for injection, start pumps, and increase injection flow to the maximum with all alternate injection subsystems, If RPV water level cannot be restored and maintained above [-164 in. (top of active fuel)], PRIMARY CONTAINMENT FLOODING IS REQUIRED; enter (procedure developed from Contingency #6).

SNPS PSTG Step:

Cl-4 When RPV pressure drops below 145 psig: j'd Cl-4.1 Line up for injection, start pumps, and irrespective of pump NPSH and vortex limits, increase injection flow to the maximum with all systems and injection subsystems.

C1-4.2 When RPV water level drops to -158 in. (Top of Active Fuel),

EMERGENCY APV DEPRESSURIZATION IS REQUIRED; line up f or injection, start pumps, and increase injection flow to the maximum with all alternate injection subsystems.

If RPV water level cannot *oe restored and maintained above -158 in. (Top Of Active Fuel), PRIMARY CONTAINMF.NT FLOODING IS REQUIRED; enter procedure developed from Contingency #6.

Justification for Differences / References High2st RPV pressure at which the shutoff head of low-water-quality alternate injoction subsystem: BCN 11600.02-2.23-23 through 26 Specification No. SH1-6" for Cordsnsate Transfer Pump Information, SWEC Drawing 11600.02-10.21-06 for Electric and Discal driven fire pump.

TAF: Tech Spec Figure B 3/4 3-1 PSTG #6 Rev. 1 Page 8

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