ML20094S593

Rev 9 to OT-100 Reactor Low Level

ML20094S593
Person / Time
Site:	Limerick
Issue date:	04/01/1992
From:	Hopkins L PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
References
OT-100, NUDOCS 9204150181
Download: ML20094S593 (4)

Text

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T-2 ""- 9 3924020840 Page 1 of 2

.. Call /smk P111LADELPill A ELECTRIC COMPANY Y LIMERICK GENERATilJG STATIO!J g OT-100 REACTOR LOW LEVEL 1.0 ENTRY COrJDITIONS 1.1 Unexpected / unexplained drop in RPV water level.

2.0 IMMEDIATE OPERATOR ACTIOtJS 2.1 Reduce Reactor power per Reactor Maneuvering Shutdcun Instructions until normal level is restored.

2.2 IP RPP controller malfunction exists, '

THEN take manual control of RPPs.

2.3 IP scram candition occurs,

~

T TEN enter T-101 AtJD exit this procedure.

O 3.0 POLLOW-UP ACTIOtJS 3.1 IP; level drop was caused by RPP OR Condensate Pump trip, -

THEN determine cause of trip AND restart pump.

3.2 IP level drop was caused by RPP controller maltuncticn, THEN return RPP to its normal control acde after malfunction is cleared, s 3.3 g level drop was caused by failure of tera flu ntum r lcu signal, AND level is stabilized at 35 in.,

THEN consider swapping to single element control AND restoring PW control to automatic until repairs can be made, a

3.4 IP level drop is not evident on redundant instrumenta, THE!! consider possible instrument sensing line fs21ure AND verify actual level utilizing instruments with Independent sensing lines.

O 9204150181 920401 PDR ADOCK 05000352 P PDR

• OT-100, hev. 9

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.. Call /smk O 3.5 IP the selected PW level transmitter hos failed, THEN transfer to the alternate level transmitter.

3.6 1r recire. runback occurred, THEN reset runback per S43.0.B.

3.7 IP third Condensate Pump is not available, THEN maintain RTP suction pressure above 300 p..ig by ITiEIting Reactor power.

t 4.0 VERIPICATION OF AUTOMATIC ACTIONS Actions Conditions 4.1 Recirc. reduced to One RPP with less than speed corresponding to 20% flow 62% rated core flow AND low Reactor Tevel (27.S")

2 One Condensate Pump tripped with total Feedwater f.ow l O l Recire, runback to 28% of greater than 854 Total Feedwater flow less 4.2 indicated speed than 20%

low Reactor level (12.5")

Pump diacharge valve less than 90's open 4.3 REACTOR HI-LO LEVEL alarm 30" 4.4 Scram 12.5" Group II Isolation

DATE 04/03/02 09:52 NRMS RECE!PT ACKNOWLEDGEMENT SEQUENCE # 3924020840

. i LGS PROCEQURES - APPROVED ORIGINALS DISTRCODE 'OT-U1 T01 NRC OFFSITE PROCEONO OT-100 REVISION 009 OATE 04/01/92 C  ! I HAVE RECEIVED THE SUBJECT MATERIAL SIGMATURE: _____________________________________________ DATE: _______________

PLEASE RETURN THIS FORM PROWPTLY TO LGS ADMIN. SERVICES (LGS-340 )

WITHIN 15 OAYS OF THE ABOVE PRINT-DATE.

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$ '.5 0 U .' {p' h i

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DATE 04/03/92 39:52 NRMS 00CU4ENT CONTROL FORM SEQUENCE # 3924020840 LGS.PRDC50URES - APPROVED ORIGINAL.S ISTRCODE OT-U1 coseeeeeeeeeeeeeeeeeeeeeeeeesseeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeese cLGS SluulATOR LGS-LTC 01 C** LGS OFFICE OCC/ WALK 01 !*

OLGS TRAIN CTR LGS-LTC 03 C**NUNEZ, R. LGS-LTC 01 1*

CMAINT/ICC LIBRARY OCC/ WALK 01 !**0PERATIONS SUP. CTR. OCC/ WALK 01 1*

ONRC OFFSITE OUTGOING 01 C** PLANT OP. SUP. FAC. OCC/ WALK 01 14 OTRAINING COORDIN. OCC/WA'.K 01 I** SHIFT MGR OFFICE OCC/ WALK 01 1*

CCONST BLOG LIS DCC/ WALK 01 1**SUPPT BLOG LIB #1 OCC/ WALK 01 I*

OCONTROL RM CART LGS DCC/ WALK 02 I**SUPPT BLOG LIB #2 OCC/ WALK 01 1*

OFMERG. OP. FAC. LGS DCC/ WALK 01 C** TECH. SUPP. CTR. LGS DCC/ WALK 01 1*

oINPD OUTGOING 01 1**___ _____ _ _______________________

OLGS l.19RARY LGS /A2-1 01 I *

• _ _ _ -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

oooseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeoseweseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee REQUESTS FOR CHANGES TO THIS DISTRIBUTION L151 MUST DE ADDRESSED TO THE ORGANIZATION RESPONSIBLE FOR ORIGINATING THE ATTACHED DOCUMENT (SEE NUCLEAR RELATED DOCUMENT DEGISTER (NROR) FOR RESP. ORG.). THE RESP. ORG. WILL AUTHORIZE THE LOCAL DAC SUPERVISOR TO MAKE THE NECESSARY CHANGES.

ATTACHED IS A COPY OF:

PROCEDNO OT-100 REVISION 009 OATE 04/01/92 UNCONTROLLED: LIBRARY, INPO, NUNEZ, R.

[ 4PO - 0T-100, 100 RASCS, 101, 101 BASES, 103, 103 S ,', S E S , 104 ,

\- / 104 SASES, 112, 112 BASES, 116, 116 BASES f*

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