ML20199E461

Off-Normal Operating Procedure 7308.1, Malfunction of Auxiliary Feedwater Sys

ML20199E461
Person / Time
Site:	Turkey Point
Issue date:	08/23/1985
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML20199E404	List: L-85-372, Commits to Apply Appropriate Tech Spec Requirements to Address Auxiliary Feedwater Pump Availability & Performance Monitoring.Several Items Discussed in IE Operational Readiness Insp Team 850913 Exit Meeting Resolved ML20199E398 ML20199E411 ML20199E432 ML20199E453 ML20199E461 ML20199E480 ML20199E486 ML20199E503
References
FOIA-85-729 7308.1, NUDOCS 8603270232
Download: ML20199E461 (17)

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i FLORIDA POWER AND LIGHT C0tiPANY l TURKEY POINT UNITS 3 AND 4

OFF-NORMAL OPERATING PROCEDURE 7308.1

AUGUST 23. 1985 l 1.0

Title:

! MALFUNCTION OF THE AUXILIARY FEEDWATER SYSTEM ,

! 2.0 Approval and List of Effective Pages:

2.1 Approval :

Change Dated 8/23/85 Reviewed by Plant Nuclear Safety Committee: 85-140 j and Approved by Plant Manager - Nuclear: 8/23/85 2.2 List of Effective Pages:

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! Page Date Page Date Page Date Page Date ,

1 8/23/85 6 8/23/85 11 8/23/85 16 .8/23/85 2 8/23/85 7 8/23/85 12 8/23/85 17 8/23/85 3 8/23/85 8 8/23/85 13 8/23/85 4 8/23/85 9 8/23/85 14 8/23/85 5 8/23/85 10 8/23/85 15 8/23/85 3.0 Puroose and Discussion:

): 3.1 Purpose j This procedure provides instructions for. operation of the Auxiliary Feedwater System in the event of ' a specific identifiable failure of the

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Auxiliary Feedwater Pumps and/or associated piping system. Further, it j provides methods for -obtaining alternate sources of feedwater in . the i unlikely event of a complete failure of the Auxiliary Feedwater System, l 3.2 Discussion

.! 3.2.1 The Auxiliary Feedwater System is designed to:

.I t 1. Supply auxiliary feedwater to the steam. generators within three j minutes in case of a loss of the nonnal feedwater supply. ~

4 2. Keep the unit at hot stand-by, for a limited period of time, in-I case of loss of offsite power. If the offsite power is not i restored during hot stand-by, the system stays in service until l the reactor. temperature and pressure is lowered to a level where j the residual heat removal system can be put in operation.

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' e603270232 860106 PDR FOIA PDR WEISSB5-729 h

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8/23/85 0FF-NORMAL OPERATING PROCEDURE 7308.1,.PAGE 2 l MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM -

t 3.2.2 The Auxiliary feedwater pumps will . automatically start on any one of j the following signa!s from either unit:

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)' 1. Safety injection.

j 2. Low-low level in any of the three steam generators.

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j. 3. Bus stripping (1. actuated by a loss of voltage on either the 5 h or B . V 4160 Bus or 2. undervoltage on one 480V load center j and the diesel generHor breaker open.)l t

j 4. Loss of both feedwater pumps under normal operating conditions.

In addition, the pumps may 'be started by opening the steam supply M0V's on either unit.

3.2.3 When the reactor coolant of a nuclear unit is heated above 350*F the following conditions must be met:

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j 1. Single Unit Operation f

AFW Train 1 shall consist of AFW pump (s) A and/or C aligned to 4

take a suction from the CST and discharge to the steam generators through the flow control valves CV *-2816, *-2817 and

• -2818. The steam supply for the AFW Pumps (s) shall be from M0V *-1404 and/or MOV *-1405. -The train will also include all

' to provide these fnhhdentste'am"aNwate" o'w pa'tk!'.sary AFW Train 2 shall consist of AFW Pump B or C ~ aligned to take a

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suction from the CST and discharge to the steam generators through the flow controls -valves CV *-2831, *-2832 and *2833.

i The steam supply for the AFW Pump shall be from MOV *-11403 \ or M0Y *-1404. The train will also include all piping, valves and controls necessary to provide these independent steam and water j flow paths.

f 2. Dual Unit Operation i

1 AFW Train 1 shall consist of. AFW Pumps A and C aligned to take a j suction from the CST and discharge -to the steam generators 4' through the flow control valves CV *-2816, *-2817, and *-2818. i l

The steam supply for the AFW Pumps shall be ~ from MOV *-1404 and '

MOV *-1405. The train will also include all piping, valves and controls necessary to provide these independent steam and water flow paths.

AFW Train 2 shall consist of . AFW Pump B aligned to 'take a suction from the CST and discharge to the. steam generators through - the. flow control - valves CV *-2831, *-2832, and *-2833.

Th.e steam supply for the 'AFW Pump shall be from MOV *-1403. . The

train will also include all piping, valves and controls i necessary to provide these . independent steam .and - water. flow i paths.

J 1 3. l Its condensate storage tank shall contain a minimum of 185,000 b ___JR1lElitIRTPu - ~

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8/23/85 CFF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 3 MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM i

3.2.4 During power operation, if items 1 and 2 of Step 3.2.6 cannot be met j within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or item 3 of Step 3.2.6 within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, the 4 reactor shall be shut down and the reactor coolant temperature l reduced below 350'F within 12 or 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> as applicable.]

j 4.0- Symptoms:

i 4.1 The symptoms that may indicate an auxiliary feedwater system malfunction

] will vary greatly and are dependent primarily on:

1 4.1.1 The nature / type of malfunction (pump failure, valve failure, piping rupture,etc).

4.1.2 The amount of decay heat present in the reactor at the time of the j feedwater system malfunction.

4.2 Any of the following may indicate a malfunction of the auxiliary feedwater i system: '

4.2.1 Steam supply M0V's to the auxiliary feedwater pumps fail to open, a

4.2.2 Loss of Iflowl, or no flow ' indication, on auxiliary feedwater' flow indicator's FI *-1401A, FI *-1401B, FI *-1457A, FI *-1457B, FI *-1458A, and FI *-14588.

4.2.3 Continuous loss of indicated level on wide range steam generator level recorder LR *-477.

! 4.2.4 An unexplained decrease in steam generator narrow range level i

4 indication if narrow range indication had been regained by normal operation of the auxiliary feedwater system.

i 4.2.5 Changes . in the RCS level, pressures and temperatures indicating a

{ degenerated heat sink.

4.2.6 Abnormally high level and pressure in the pressurizer, possible PORV

actuation.

} 4.2.7 Abnormal reduction in CST level as indicated on LI *-6384A and LI *-

t 63848.

l 4.2.8 Unusually high flow in steam dump to atmosphere as indicated by

valve position demand signals on HA *-1606, *-1607 and *-1608.

)i 4.2.9 A reduction in the RC'S subcooled margin.

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'j 4.3 Pump malfunctions and steam line or feed line ruptures will most probably

be detected (visually or audibly) by station operators, maintenance support personnel or members of the Security Force. . Any report received regarding apparent system malfunctions shall be promptly investigated. '

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8/23/85 1 0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 4 MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM

! 4.4 When a unit is operating in a degraded mode and auto-start of the auxiliary

! feedwater system results, numerous control room annunciators will be in the

alann condition. Careful' and selective observation of those annunciators associated with the symptoms listed under 4.2 will alert the operator to a

l 1] possible malfunction of the auxiliary feedwater system.

j NOTE: In the event that an electronic overspeed' trip occurs during manual

'l AFW pump starting, the pump trip must be manually reset to enable

-} the pump to restart. This is not applicable during automatic i initiation.

5.0 Instructions

5.1 Immediate Automatic Action: '

l' 5.1.1 AC or DC Motor failure on steam supply MOVs and/or turbine throttle

, and trip valves.

! 1. Actuation of motor thermal overload circuits will de-energize

! the 120V control circuit and prevent the valve from opening.

2. Exceeding a pre-set torque value will de-energize the "0 PEN" section of the control circuit and prevent the valve from opening.

NOTE: Failure of one steam supply M0V or throttle and trip valve to open is of no imediate concern since satisfactory operation of either of the remaining valves will place the auxiliary feedwater system in. service .and actuate permissives to pennit feeding the associated unit's steam generators.

j 5.2 Imediate Operator Action: ,

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5.2.1 Upon receiving indication of an auxiliary feedwater system  ;

malfunction, the operator shall imediately take the necessary l l action to correct or isolate the malfunction. ThelPlantSupervisor The o'perator's action 8 1 shall be notified imediately.

j - Nuclear should be l directed towards:

I j 1. Ensuring the safety of personnel and equipment.

'f 2. Maintaining system integrity by isolating faults and/or defects. l I

3. Establishing and maintaining feedwater flow to the steam l generators by starting stand-by equipment and by the utilization ,

of redundant facilities or alternate sources of feedwater. '

5.3 Subsequent Operator Action 5.3.1 One or more auxiliary feedwater pumps trip on ' mechanical overspeed following an auto-start signal

j 1. Direct NPO to verify flow path of water from the associated CST

to the pump (s) casing.

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0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 5 j MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM

3. Verify integrity of the governor valve linkage mechanism by visual inspection.

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l 4. Verify correct oil level in the governor housing. Oil level i should be above the low level mark on the sight glass.

5. If 'all appears normal, close - the steam supply M0V's *-1403 i and/or *-1404 and *-1405 and instruct the NP0.to re-latch the l- affected unft(s).

6. Once the pumps have stopped, exercise the governor control knobs' to their lowest spec' setting and then return them to their maximum speed setti~s.

I 7. Re-open the' throttle and trip valve on the tripped unit (s).

8. Re-start the units by opening M0V's *-1403 and/or *-1404 and-

! *-1405.

t NOTE: If again, any auxiliary feedwater pump trips :on overspeed, contact the I and C Department to verify the

, operability of the turbine governor.

9. If all auxiliary feedwater pumps fail and cannot be restarted, proceed to the appropriate section of step 5.3.14.

NOTE: In, the event that an electronic overspeed trip occurs during manual AFW pump starting, the pump trip must be nanually reset to enable the pump to restart. This is not applicable during automatic initiation.l

. 5.3.2 If auxiliary feedwater pumps start and attain design speed but fail to deliver design flow of 125 GPM to each steam generator:

1. Direct the NP0 to verify that all manual and automatic valves are in the correct position to provide a flow path to the steam j generators from the CST through the auxiliary feedwater pumps.

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2. Verify adequate water supply available in the CST ~ (LI *-6384A j and LI *-63848).

! 3. Compare pump discharge pressure (PI *-1429, *-1430 and *-1431) i to steam generator pressures observed in the control room. Pump l discharge pressure should be greater than steam generator

.i pressure to ensure feed flow.

!1 l (1) Verify feed flow transmitter sensing line isolation valves j are open.

j. (2) Check for presence of water in instrument air system by

.: opening drain valves on air pressure regulators at each ,I/P station and at each feed regulating valve.

1 (3) l Verify that 'the governor control knob is in the maximum j speedsetting.l -

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0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 6 -

MALFUNCTION OF THE AUXILI ARY FEE 0 WATER SYSTEM

4. Ensure' that turbine throttle and trip valves are open 1 (indication on console and verify locally at turbine).and that i the governor is controlling pump speed at la maximum of 5900 rpm (local tachometer). Steam pressure to tle turbines-lshould 1 be approximately that indicated in the control room for the

.! steam generators.

! 5. Compare redundant flow indicators on - the feed platform with Control Room flow ' indicators (FI *-1401A, FI *-1401B, i FI *-1457A, FI *-14578,- FI *-1458A and FI *-14588 for proper operation) .

, 6. Observe steam generator level indicators that the level is

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'actually decreasing thereby indicating inadequate flow.

7. Instruct NPO to check each auxiliary feedwater control valve at the feedwater platform for audible sound of water flow and

, verify valve position with demand ~ position of HIC *-1401A,

i. HIC *-14018, HIC *-1457A, HIC *-14578, HIC *-1458A and HIC *-1458B in the Control Room.. ,

8. If adequate flow cannot be established to the steam generators, proceed to the appropriate section of step 5.3.14.

5.3.3 Steamline or Feedline Breaks:

Discussion: The impact on operating capabilitiss as the result of a steam.line or feedline break can range from the' loss of a single auxiliary feedwater pump to complete disablement of the auxiliary' feedwater system. Break locations in relation to isolation valves, check valves or control valves will dictate which corrective action is most appropriate. If the break can be isolated, valve manipulation must be' accomplished in an expeditious manner to minimize the time that feedwater is not available to the

accident unit. Complete failure of the -auxiliary

] feedwater system will require that the appropriate

-: action as outlined will be initiated to obtain an j alternate source of feedwater.

5.3.4 Steamline break between check valves *-083, AFSS-003A, *-085, AFSS-003B, *-087, AFSS-003C, and the turbine.

1 1. Close MOV *-1403, M0V *-1404 and M0V *-1405 to the auxiliary e .feedwater pumps.

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-l 2. Close the following steam isolation valves to the turbine as 1 appropriate:

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"A" AFW Pump Valves 3-082A or B and. 4-082A or B l

AFSS-001A or -002A

! "B" AFW Pump Valves 3-084A or B and 4-084A or B, AFSS-001B or -002B "C" AFW Pump Valves 3-086A or 8 and 4-086A or B,

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0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 7 MALFUNCTION OF THE AUXILIARY FEEDWATER SYSTEM ,

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3. If the "A" or "C" pump experienced the break, the redundancy of 1 the system is not affected. . If the "B" pump is affected, the t

following steps should be taken to maintain redundancy and minimize the effect of another incident, however unlikely.

m (1) On Pump "C" OPEN : AFSS-001C and AFSS-002C j (2) On Pump "C" CLOSE 3-086A or B, 4-086A or B

,1 (3) On Pump "C" Discharge Lines, OPEN AFPD-003

(4) On Pump "C" CLOSE 3-342, 4-342

(5) .On Pump "B" CLOSE Pump Discharge Valve AFPD-002 j (6) On Pump "B" CLOSE AFSS-001B or AFSS-0028 i This lineup maintains two separate trains of steam supply and feed from A and C pumps.

Il 4. Open M0V *-1403, MOV *-1404 and MOV *-1405 to restart the AFW pumps.

I ~5.3.5 Steam line break between M0V *-1403, MOV *-1404, and MOV *-1405 and

'I isolation valve *-082A, *-084A, *-086A,' AFSS-001A, B or C at the

auxiliary feedwater turbines. .

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1. Close MOV *-1403, M0V *-1404 and MOV *-1405.

2. If the break is on Train 2 (from "A" Steam Generator) close

.j *-119 the upstream isolation valve to M0V *-1403.

q 3. At "B" ' Auxiliary Feedwater Pump close AFSS-001B or AFSS-002B.

4. At "B" Auxiliary Feedwater Pump open *-084A and *-0848.

5. Open MOV *-1404 and M0V *-1405.

'i This lineup provides all three - Auxiliary Feedwater Pumps j with steam from "B" and "C" steam generators on the unit j generating the start signal.

. 6. If the break is on Train 1 (from "B" and "C" Steam Generators) '-

I Close M0V *-1403, MOV *-1404 and MOV *-1405.

i d 7. Close upstream isolation valves *-219 from '"B" Steam Generator and *-319 from "C" Steam Generator.

, 8. At "A" Auxiliary Feedwater Pump open AFSS-001A and AFSS-002A.

9. At "C" Auxiliary Feedwater Pump open AFSS-001C and AFSS-002C.

10. Open MOV-4-1403.

^.j This lineup provides steam to all three auxiliary feedwater pumps through Train 2 from "A" Steam Generator. -Backflow to the e break is prevented by check valves *-083, *-085 and *-087.

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8/23/85 OFF-NORMAL CPERATING PROCEDURE 7308.1, PAGE 8

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MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM i

l NOTE: If the Train 1 break is downstream of 'AFSS *-007 it may 4

a be desirable to close this valve. and open - AFSS *-006, j open *-219 and MOV *-1404.

supplies for Train 2.

This would provide two steam i'

5.3.6 Steam line break betwe'e n MOV isolation valves *-119 and *-120, *-219

[. and *-220 or *-319 and *-320.

- NOTE

If the steam break is at such a location as to render valves 1 *-119, *-219 or *-319. inaccessible, refer to Emergency i Operating. Procedure ?.0002 (E-2), Loss of Secondary l Coolant. If the root isolation val'ves can be closed, backflow to the break will be prevented by the stop-check j characteristics of valves *-120, *-220 or *-320.

i 1. On the steam platform, close root isolation valve *-119, *-219'

i. or *-319 as appropriate.

a i 2. If the break.is on "A" -line, open AFSS *-006 and clope' j AFSS *-007. This maintains mechanical redundancy and separation j in the steam supply lines. .

3. If the break is on '"B" or "C" lines the only immediate action necessary is to close the appropriate upstream root- isolation valve. This maintains mechanical redundancy and the downstream.

stop/ check- valves. prevent backflow-to the break.-

5.3.7 Feedline break between check valve ~*-140, *-240, or *-340 and

!- isolation valves *-141, *-241 or *-341 (Train 1).

1. Close appropriate isolation valves *-141, *-241 or *-341.

I 2. Continue feeding the effected steam generator utilizing Train 2 j feed flow control valve CV *-2831, 2832 or.2833 ~as appropriate.

, 5.3.8 Feedline break between check -valve AFPD-3-010, AFPD-3-012 or i hFPD-3-014 (Unit 3) [AFPD-4-009, AFPD-4-011, or AFPD-4-013 (Unit .4)]

j and isolation valve *-20-139, *-20-239 or *-20-339 (Train 2).l l

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j 1. Close appropriate feed control valves CV *-2816 and CV *-2831 1 ("A" Steam Generator) , CV *-2817 .and CV *-2832 ("B" Steam i Generator) or -CV *-2818 and CV *-2833 ("C" Steam Generator) and I

upstream isolation valve AFPD *-008,. AFPD *-007 or AFPD *-006 on

. the affected steam generator. .

2. This accident renders the auxiliary feed -system to' the j

associated steam generator inoperable. Refer to Section 5.3.14l to provide feedwater to the steam generator (s) from an alternate j source. If an alternate source of feedwater is not available, j refer to E0P 20002 (E-2), Loss- of Secondary Coolant.

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! 0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 9 MALFUNCTION OF THE AUXILIARY FEEDWATER SYSTEM 5.3.9 Feedline b eak between isolation valves *-141, AFPD *-008, *-241, j AFPD *-007, *-341 or AFPD *-006 and pump discharge valves *-142,

, AFPD-001, *-242, AFPD-002, *-342 or AFPD-003.

1. Close M0.V *-1403, MOV *-1404 and MOV *-1405.

2. If the break is on Train 2 from the "B" Auxiliary Feedwater i Pump, close the pump discharge valve AFPD-002.

3. Close steam supply to "B" auxiliary feedwater pump AFSS-0028.

(This prevents running the pump dead headed).

, (1) Restart the pumps by opening steam supply MOVs and resume j auxiliary feed to the steam generators using Train 1 feed

system.

. 4. If the break is 'on Train 1 from _ the "A" and "C" auxiliary feedwater pumps, close the pump discharge valves *-142 and *-

342. g

5. Realign either "A" or "C" pump for feed supply to Train 2 of the affected unit as follows:

1. For "A" pump, open AFPD-001

2. For "C" pump, open AFPD-003

3. Close steam supply valve *-82B or *-86B on the pump not being used..

! NOTE: This lineup provides two pumps with redundant steam i supplies for one train of feed to the affected unit.

l 4. Re-open steam supply MOV *-l'403, M0V *-1404, and MOV *-1405 l i to restart the two operable pumps. Restne auxiliary feed to

the steam generators using the Train 2 feed system.

I t 5.3.10 Feedline break between pump discharge check valve 143, 243, or 343

, and pump discharge valve *-142, AFPD-001, *-242, AFPD-002, *-342 or l j AFPD-003.

1. Stop the auxiliary feedwater pumps by closing steam supply j MOV *-1403, MOV *-1404 and M0V *-1405.

i i 2. Isolate the break by closing the following valves' as j appropriate:

i l l For "A", pump close suction valves 3-144 and 4-144, discharge

( valves 3-142, 4-142, AFPD-001, .and pump recirc. valve 177.

, ,For "B" pump close suction valves 3-244 and 4-244, discharge

valves 3-242, 4-242, AFPD-002, and pump recire. valve 277. l 2 1

! For "C" pump close suction valves 3-344 and 4-344, discharge j valves 3-342, 4-342, . AFPD-003, and pump recire. valve 377, 1

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'0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 10

MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM

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3. Close the steam- isolation *-082A and AFSS-001A, *-084A and i ' AFSS-001B or *-86A .and AFSS-001C to the associated pump turbine to prevent operation of the affected pump.

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1 4. If the "B" auxiliary feedwater pump experiences the break, the system should be realigned as follows to maintain two train

>! redundancy;

'I 1. On "A" Auxiliary Feedwater Pump, open AFPD-001 and close

, discharge valves 3-142 and 4-142. .At the turbine, open AFSS-001A and AFSS-002A, close 3-082A and 4-082A.

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5. Restart the two operable pumps by opening the steam supply M0vs j *-1403, *-1404 and *-1405.

): 5.3.11 Feedline break between pump discharge check valve 143,- 243 or 343 and pump suction valves *-144, *-244 or *-344.

1. Stop the auxiliary feedwater pumps by closing MOV *-1403, MOV+*-

1404 and MOV *-1405.

2. . Isolate the break by closing pump suction valves 3-144 ' and 4-144, 3-244 and 4-244, or 3-344 and 4-344, and pump recirc.

valves 177, 277 or 377. The discharge check valve prevents backflow, but further isolation roay be desirable as conditions permit.

3. Close the associated steam isolation valves:

5 3-082A, 4-082A and- AFSS-001A for "A" Pump l 3-084A, 4-084A and AFSS-001B for "B" Pump 3-086A, 4-086A and AFSS-001C for "C" Pump

! 4. With the break on "A" or "C" pump, redundant flow paths are maintained. With the break on B pump the following~ lineup will ;

provide redundant flow paths to the affected unit. l0n "A" auxiliary feedwater pump, open AFPD-001 and close valve 7s-142 and 4-142. At the turbine, open AFSS-001A and -002A, close j 3-082A and 4-082A.

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! 5. Restart the operable pumps by opening steam supply 110V *-1403, ll MOV *-1404 and MOV *-1405 l .

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] 5.3.12 Feedline break on the suction side of the auxiliary feedwater pumps between pump suction valves *-144, *-244 and *-344 and condensate

'. storage tank outlet check valve *-401.

l 1. Stop the auxiliary feedwater pumps by closing steam supply MOV's

i *-1403, *-1404 and *-1405.

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2. Close valve *-400 at-the associated condensate storage tank, and pump suction valve *-144,. *-244 and *-344 from the affected j C.S.T.

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j 0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 11 i MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM

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l l 3. Close recire. isolation valve 455 (Unit 3) or '457 (Unit 4) and i L.0. cooler outlet valve AFWU-019 (Unit 3) or A:WU-0181 (Unit 4) l as appropriate.

4. Restart the auxiliary feedwater pumps by opening steam supply MOVs *-1403, *-1404 and *-1405.

t 5. Instruct the AE0 to direct water plant output to the C.S.T. in i service.

NOTE: Repairs to the ruptured line must be made in an I expeditious manner to minimize the use of the non-accident units emergency supply of secondary coolant.

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! 5.3.13 Rupture of the pump recirc. line between valves 177, 277 and 377 and either CST.

1 1. Close auxiliary feedwater pump recirc. valves 177, 277 and 377.

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2. Direct C.W. flow from the L.0. coolers to the unaffected' CST.!

(1) l AFWU-019 to Unit 3 CST (2) AFWU-013 to Unit 4 CST l )

l NOTE: If feed flow to the steam generators is stopped, the .

, auxiliary feedwater pumps must be shutdown to prevent '

damage to the pumps due to excessive heat buildup with no recirculation flow.

5.3.14 If the Auxiliary Feedwater System fails completely, proceed as '

follows

1. Off-site power available.

i (1) l Place the Steam Generator Feedwater Pump (s) in service in i accordance with *-0P-074 and supply feedwater to the steam l generators utilizing the feedwater bypass regulating valves  ;

FCV *-479, *-489-and *-499.

(2) In the event that the Steam Generator Feedwater Pumps are inoperable, place the Standby Steam . Generator Feedwater .

Pumps in - service in accordance with Operating Procedure l 07201.1, Standby Steam Generator Feedwater System -

! Operating Instructions.

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(3) If'it is undesirable or impossible to establish normal or

". standby feedwater flow, establish feedwater flow- from the

-non-accident unit .to the accident unit by performing the t

following steps:

1. Ensure that the non-accident unit is a condition which will permit the use of its normal feedwater pumps to.

supply the accident unit.

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] 0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 12 j MALFUNCTION OF THE AUXILIAPY FEE 0 WATER SYSTEM i

2. Contact the Units 1 and 2 Watch Engineer and advise of

} the. plant status and request verification that the j feedwater isolation valve from Units 1 and-2 to Units 3

.and 4 is closed.

I j 3. Open feedwater supply valves 3-510 and 4-510 to pennit j the supply of feedwater from the non-accident unit to

the accident unit.

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NOTE: The. valves are located at the mezzanine level, j south. and southwest 'of the Unit 3 Condensate Storage Tank.

j 4. Also on the feedwater platform of the accident unit, i open warm-up valves.*-514, *-515, and *-516 by the

,  : bypass regulating valves.

! 5. On the feedwater platform of the non-accident unit, open warm-up valves ~ *-514, *-515, and *-516 by the bypass regulating valves.

6. Verify or place the non-accident units Steam G'enerator Feedwater pumps in service in accordance with *-0P-074 and close or verify closed the non-accident unit feedwater valves MOV *-1407, *-1408, and *-1409.

7. Adjustable feedwater bypass regulator valves FCV *-479,

• -489, and *-499 on the accident unit to admit flow to the desired steam generators.

(4) In the event that the normal and. standby feedwater cannot be established and feedwater flow from the non-accident unit is

not available, use emergency feedwater supply from Units 1 j and 2 by performing the following steps:

1. Conta'ct the Units 1 and 2 Watch Engineer and advise him of the plant status and of the urgent need to obtai.n l ,. feedwater supply from Unit 2. Request that the 1

feedwater tie isolation valve to Units 3 and 4 from Units 1 and 2 be opened and the Unit 2 power be adjusted to provide maximum feedwater pressure (approximately 75%

, power on Unit 2).

4

2. Open feedwater supply valve 3-510 o_r, 4-510 to supply I

feedwater from the Units 1 and 2 to the affected Unit 3 5

, -0.! 4 - ,

NOTE: The valves are located at the mezzanine level, south and southwest of the Unit 3 Condensate

Storage Tank.

3. On the feedwater platform of the accident unit, close

'i the feed bypass regulating inlet isolation valves *-130, i *-230, and *-330.

i

)l

8/23/85 i 0FF-WORMAL OPERATING PROCEDURE 7308.1, PAGE 13 1

MALFUNCTION OF THE AUXILI ARY FEE 0 WATER SYSTEM i

4. Also on the feedwater platform ~ of the accident unit,

'f open the feedwater warm-up valves *-514, *-515, and *-

l 516 by the bypass regulating valves.

i j 5. Adjust the feedwater bypass regulator valves FCV *-479,

• -489 and *-499 on the accident unit to admit feed flow to the desired steam generators.

!' (5) If emergency feedwater flow from Units 1 and 2 cannot be j established, feedwater- can be supplied to the steam i generators with the Condensate Pumps. This requires the i following actions to be taken:

i j 1. Rapid pressure reduction of-the steam generators to less ij than 450 psig by opening steam dump valves to the

,i condenser or the atmosph;ws (the preferable pathway is j to the condenser for~watee 61servation).

) 2. Open bypass valve around steam generator feed pumps,

FDWR *-001.

<; t

3. When the steam generator pressure is below f.he condensate pump discharge pressure, admit water to the steam generators by opening FCV *-479, *-489 and *-499 after starting the Condensate Pump in accordance with

• -0P-073.

(6) In the event that the previously listed methods of supplying t

feedwater to the steam generators . fail or adequate RCS i* cooling can not be maintained , establish a feed and bleed of the RCS until feedwater flow can be restored.

.)

2. Offsite power not available q *

(1) Place the Standby Steam Generator Feedwater pumps in service

' by performing the following steps:

1. Energize the applicable 4160V *C bus ~ in accordance with Off-Normal Operating Procedure 9408.2, Energizing the

-! 4KV Buses Using the Cranking Diesels Bus Tie Lines or Startup Transfonner from the Opposite Unit.

1 2. Place the Standby Steam Generator Feedwater Pumps in ii service in accordance with Operating Procedure 7201.1, il

] Standby Steam Generator Feedwater System - Operating

' Instructions..

)

.1 (2) If the Standby Steam Generator Feedwater Pumpi are inoperable, use emergency feedwater supply from Units 1 and ij 2.by performing the following steps:

i, *

1. Contact the Units 1 and 2 Watch Engineer and advise him of the plant status and of the urgent need to obtain feedwater supply from Unit 2. Request that the l feedwater tie isolqtion valve to Units 3 and 4 from i

Units 1 and 2 be opened and the Unit 2 power.be adjusted

'!' to provide-maximum feedwater pressure (approximately 75%

power on Unit 2).

_ _ _ . ~ . . _ _ .- , __ _ .. __ __ _ . _ _.

t d

8/23/85 1' 0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 14

MALFUNCTION OF THE-AUXILIARY FEE 0 WATER SYSTEM

, 2. Open. feedwater supply valve 3-510 or. 4-510 to supply feedwater from the Units 1 and 2 to the affected Unit 3

~

i or 4. '

4 NOTE: The valves are located at the mezzanine level,

{ south and southwest of the Unit 3' Condensate.

j Storage Tank.

1

3. On the feedwater platform of the accident unit, close the feed bypass regulating inlet' isolation valves *-130,

• -230, and *-330.

~

4. Also on the feedwater platform of the accident unit, open the feedwater warm-up valves *-514, *-515, and *-

', 516 by the bypass regulating valves.

5. Adjust the feedwater bypass regulator valves FCV *-479, s *-489 and *-499 on the accident unit to admit feed flow i to the desired steam generators.-

l t

(3) In the event that the previously listed methods of supplying feedwater to the steam generators fail or adequate RCS cooling cannot be maintained, establish a feed and bleed of the RCS until feedwater flow can be restored.

l 5.3.15 Emergency make up from the Demineralized Water Storage Tank to the l Condensate Storage Tanks via the transfer pump.

t i NOTE: This step should not be perfonned unless the associated I

Condensate Storage tank level -is critically low and the Demineralized Water Storage Tank is 12 feet or greater.

L 1. Open or verify open DWDS *-021' at Demineralized Water Storage Tank.

I ~

2. Open or verify open DWDS *-052, storage tank to condenser.

3. Close or verify closed *-405,_ transfer pump discharge to Unit 3/ Unit 4 Condensate Transfer Line.

4

4. Close or verify closed *-040, . transfer pump- discharge to F feedwater system. - I 1 5. At W.T.P. place selector switch for CV *-1540 on the. opposite

] unit CST to close, place selector switch for CV *-1540 to open 3 on the CST to be filled.

l .6.

~

Open *-402, condensate transfer pump suction.

a

7. Open *-404 and *-416, condensate transfer pump -discharge to Condensate Storage Tank fill line from WTP. '

/ 8. Start condensate transfer pump, observe FI *-1437- and' tank 3

levels to . verify liquid transfer from Demineralized Water Storage Tank _ to Condensate Storage Tank.

l 9. ..W hen desired, terminate transfer by stopping the condensate t transfer pump, and return valves to normal line-up.

OFF-NORftAL OPERATING PROCEDURE 7308.1,.PAGE 15 L ~ MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM -

i t

5.3.16 Emergency Make-up to the Condensate Storage Tank from the' P'rimary

j. Water System

]  !

1. Verify Unit 3 and 4 primary water systems are in service with an indicated pressure of approximately 150 psig.

I

2. Open or verify open CV *-1540 (Condensate Storage Tank Make-up)

(

i to the desired Condenste Storage Tank. Close or verify closed DWDS 001, make-up to Demineralizer Water Storage Tank and the

-l opposite Units CV *,-1540.

I j 3. Unlock and open valves 3-10-511, 3-10-336, . and 10-575A (tie i valves between the P.W. a'n d demin. water systems) this directs

~

'l water flow from Unit 3 PWST to the selected Condensate Storage i- Tank.

} 4. Prior to ~ reaching the PWST Technical Specification low level alarm setpoint, close valves 3-10-511, 3-10-336, and 10-575A and 1 terminate the transfer.

)

NOTE: If desired, water. levels in the PWSTs' may be equaliited.

by opening tie valves between'the two tanks locatedTon

the suction header of the P.W. pumps.

5.3.17 Emergency Make-up ; the Condensate Storage Tank Using the . Service Water / Fire Main S' tem 9

CAUTION: This 's the least . desired mode of emergency make-up.

Service water is .relatively untreated and when used as make-up will result in heavy scale' deposits on exterior tube surfaces, steam baffles, moisture separators and inner shell surfaces of the steam generators. If this mode of make-up is used, ensure that the operating unit j' Condensate Storage Tank- is ~ isolated from the Auxiliary i Feedwater. Pumps - see Steps 8.2.2.5.1 and 8.2.2.5.2. 1

1. Remove manway at top of accident unit's condensate storage tank. {

! 2. Utilizing . fire hoses at stations adjacent to the condensate

'! storage tank, admit water to the condensate storage tank through

! the open-manway. One hose will supply approximately 75 gpm to '

! the condensate storage tank.

?

1 5.3.18 Manual . Control of Auxiliary Feedwater-Pump Turbine Throttle and Trip j Valves l NOTE: Failure of electrical power, or other control malfunctions l

will require that control valves-be operated manually. ,

1. Verify that steam pressure is available to operate the pumps. ,

If not, manually open at least one steam supply M0V from the  !

desired unit (MOV *-1403, *-1404, or *-1405). j

2. Verify that valve is latched and open T and T valve of one pump by ' turning the hand wheel counter-clockwise. Adjust steam pressure at the turbine to obtain the desired discharge i

j. pressure. j

8/23/85

.. ~0FF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 16 l ~ MALFUNCTION OF THE AUXILIARY FEE 0 WATER SYSTEM i,

3. Inspect the pump for proper operation.

'! 4

4. Verify by PI-1429, 1430, or 1431 that the pump discharge pressure is approximately 150 psig greater than the steam supply pressure (PI *-4648) to ensure feed flow to the steam generators. Adjust the turbine throttle and trip control valve as required.

5. To stop the pump ~ turn the hand wheel clockwise until the throttle and trip valve is closed.

NOTE: Remote pressure / level indicators ~ for Units 3 and 4 are located in the southwest section of ^ the Auxiliary

'i Feedwater Pump area. Indicators are for pressurizer pressure and level, steam generator wide range level and main steam pressure.

5.3.19 Manual Control of Auxiliary Feedwater Regulating Valves NOTE: Remote indicators are located on each feedwater platform for auxiliary feed flow and steam generator wide radge level indication. ,'

1. At the Feedwater Platform for the selected valve perform the following:

(1) TO MANUALLY OPERATE

CLOSE OR VERIFY CLOSED VALVES:

CV-2816 40-260 and 40-261 CV-2817 40-264 and 40-265 CV-2818 40-268 and 40-269 CV-2831 40-262 and 40-263 ,

CV-2832 40-266 and 40-267 i CV-12833l 40-270 and 40-271 x ~ (2) Sleed ~off the air / nitrogen pressure .by opening the drain valves below the .two pressure regulators associated with j each control valve to be operated manually once the pressure has bled off, ' nlock u the handwheels and remove the metallic j.

seal s.

! (3) Slowly open the selected valves until flow is detected 1 through the valves and indicated on FI *-1412, *-1459 and/or i i *-1460. '

i- -

II (4)- Observe LI *-4778 and *-497B, adjust Auxiliary Feedwater

]; flow as required to maintain levels at approximately 607.

wide' range.

Ii

2. To return the valves to Auto Control, perform the-following:

(1) Place the control valve in the full " CLOSED" position.

Slowly turn the handwheel . in -open di rection (counterclockwise) until' resistance is felt, then close the handwheel 3 full turns. (This positions the valve to

i neutral ready for automatic operation.) Lock and seal the j handwheel in this position as outlined in Administrative

.; Procedure 0103.5 a . - . , -

b .

8/23/85 OFF-NORMAL OPERATING PROCEDURE 7308.1, PAGE 17

[:. MALFUNCTION OF THE AUXILIARY FEEDWATER SYSTEM b

(2) Close or verify " CLOSED" ' the drain valves below the two

-1 pressure regulators for the associated control valve.

l 1

(3) Once the drain valves have been "CLOSE0", perform the g

following:

To Return to Auto Control Open Valve

! CV-2816 l40-260l-

CV-2817 40-254~

CV-2818 40-268 j CV-2831 40-263 4 CV-2832 40-267 1 CV-2833 40-270 1

i: 6.0

References:

6.1 FSAR 9.11.1 Auxiliary Feedwater' System Design Basis g

} 6.2 FSAR 9.11.2 Auxiliary Feedwater Pumps .

6.3 FSAR 9.11.3 Condensate Storage Tanks 6.4 FSAR 14.1.11 Loss of Nonnal Feedwater

, 6.5 l0peratingProcedures 6.5.1 Operating Procedure 7201.1, Standby Steam Generator Feedwater -System

- Operating Instructions 4

6.5.2 *-0P-073, Condensate System 6.5.3 *-0P-074, Steam Generator .Feedwater P.tsnp 6.5.4 *-0P-075,AuxiliaryFeedwaterSysteml l 6.6 Operating Procedure 7201.1, Standby Steam Generator Feedwater System -

] Operating Instructions 6.7 E0P 20002 (E-2), Loss of Secondary Coolant.

6.8 Technical Specification 3.8 Steam and Power Conversion Systems 6.9 FPL Dwg. 5610-T-E-4061, Sht.1 of 3 j

j 6.10 FPL Dwg. 5610-T-E-4061, Sht. 2 of 3

j

, 6.11 FPL Dwg. _ 5610-T-E-4062, Sht. 2 of 5

[ 6.12 FPL Dwg. 5610-T-E-4062, Sht'.-3 of 5 1 7.0 Records. Reports and Notifications:

j 7.1 Any malfunction of the auxiliary feedwater system may be a Reportable

>j Occurrence. Hence, the Operations Superintendent-Nuclear and/or Plant Manager-Nuclear should be notified as soon as possible.

j

~1

-