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OPERATING PROCEDURE OP-208 FLORIDA POWER CORPORATION CRYSTAL RIVER UNIT 3 PLANT SHUTDOWN THIS PROCEDURE ADDRESSES SAFETT-RELATED COMPONENTS l
APPROVED BY: Responsible Section Superintendent /
Supervisor o /lb $4s Date /0l8 9lE6 INTERPRETATION CONTACT: Nuclear Operations Supt.
0703160142 870305 PDR ADOCK 05000302 p PDR
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g 1.0 Pnnoost 1.1 To provide instructions for shutting down the plant from 15% power to zero power.
Hgdg Section Plant Shutdown 6.0 Turbine Generator Shutdown 7.0 1.2 Procedure cover sheet and the applicable section(s) performed constitute a complete procedure for record purposes.
2.0 DEsr1tTPTION 2.1 Below 15% full power on the generator, the integrated control system (ICS) maintains steam pressure at 885 psig.
2.2 Below 15\ full power, the steam generators maintain a constant level. As power is reduced, the average reactor coolant (RC) temperature (T(ave)) will decrease. When 0% power is reached, (T(ave)) will be approximately 532*F.
3.0 nrrrarnern 3.1 OP-204, Power Operation 3.2 OP-304, Soluble Poison Concentration Control I
x OP-208 Rev P Page 1 31
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3 3.3 SP-422, RC System Heatup and Cooldown Surveillance 3.4 OP-605, Feedwater System 3.5 OP-603, Condensate System 3.6 OP-402, Makeup and Purification System 3.7 OP-302, RC Pump Operation 3.8 OP-703, Plant Distribution System 3.9 SP-441, Unit Shutdown Surveillance Plan 3.10 OP-606, Auxiliary Steam l31 4.0 LIMITS AND PRn*1DTIONS 4.1 Maintain sealing steam on the turbine glands until turbine backpressure reaches 30 in. Hg. ('O' Vacuum) 4.2 Do not open vacuum breakers ARV-48 and ARV-49 until the turbine is on turning gear.
4.3 Maintain lube oil temperature leaving the coolers at approximately 95'F during shutdown.
4.4 Continuous blowdown of the secondary side of the steam generators is required whenever reactor power is less than 15% and RC temperature is greater than 250*F.
4.5 Continuous feedwater (FW) flow to the OTSG's via the manual bypass valves (FWV-155 and FWV-156) is required whenever reactor power is less than 5% and RC temperature is greater than 180*F. These valves may be closed when FW is no longer required.
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4.6 When operating in Modes 1 and 2, there must be at least three RC pumps in operation.
4.7 Inform the ChenRad Section of any power change 15% in any one hour period.
4.8 (Deleted) 5.0 m POTWrE 5.1 Pressurizer Annunciator-
- a. High: 220 in.
- b. Low: 160 in.
- c. Normal: 200 in.
- d. High-High Level Alarm: 275 in.
- e. Low-Low Level Alarm: 40 in.
- f. Low-Low Level Interlock: 40 in.
(turns off pressurizer heaters)
- g. Pressurizer Temperature-
. High: 6 6 5 ' F, Normal: 647'F 5.2 The pressurizer pilot-operated relief valve opens at 2450 psig and closes at 2380 psig.
5.3 Letdown Pressure Alarm: High at 145 psig l
Letdown Flow Normal Operation: 0-140 gpm i
Letdown Temperature Annunciator Alarm: 130*F l Normal: 120*F OP-208 Re Page 3 31
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5.4 Makeup Tank Level High Alarm: 86 in. in water Makeup Tank Level Low Alarm: 55 in. in water Makeup Tank Normal Level: 73 in. in water 5.5 Startup Rate (SUR) Automatic Bypass: 10% Neutron Power SUR Automatic Reset: 5% Neutron Power SUR High Voltage Cutout (Power Range): 10% Neutron Power SUR High Voltage Reset (Power Range): 5% Neutron Power
'SUR High Voltage Cutout (Intermediate Range): 10-9 amps SUR High Voltage Reset (Intermediate Range): 5 x 10-10 amps PROCEDURE Initials 6.0 FNF N 6.1 IMITIAL CONDITIONS
- 6.1.1 Reactor is at approximately 15% of full power:
- a. RC pressure is approximately 2155 psig.
- b. RC T(ave) is approximately 579'F.
6.1.2 One main FW pump and associated FW booster pump are in operation per OP-605, Feedwater System.
6.1.3 One condensate pump is in operation per OP-603, Condensate System.
6.1.4 Steam generators are controlling on low level limits.
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6.1.5 Calculations to compensate for contraction and boration of the RC system and to maintain shutdown margin have been completed per OP-304, Soluble Poison Concentration Control.
6.1.6 Each source to be added has been analyzed and meets the required chemistry specifications; boron concentration has been verified.
6.2 REDUCTION TO 1210 POWER f10 8 AMPS INTERMEDIATE RANGE INSTRUMENTATION) 6.2.1 Commence RC system cooldown surveillance per SP-422 RC Systen Heatup and Cooldown Surveillance.
6.2.2 Notify the ChenRad Section of any power change 15% in any one hour period.
6.2.3 Deleted 6.2.4 1013:1. The following step will put ICS in tracking mode.
- 2. Monitor turbine header pressure and turbine bypass va1ve demand to ensure that the bypass valves are maintaining turbine header pressure at set point.
6.2.4.1 Select ' Operator Auto", commence turbine generator shutdown per Section 7.0 of this procedure.
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. Initials 6.2.5 Place Reactor Demand Control Station in hand.
6.2.6 Place the Steam Generator / Reactor Demand Control Station in ' Hand" and decrease Steam Generator / Reactor Demand to zero.
6.2.6.1 Place the loops ' A' and 'B' FW Demand Control Station in
' Hand' and ensure that FW Demand is at *0'\.
6.2.7 CAUTION
Do not exceed maximum cooldown rate limits of 100*/hr or 50' in any half hour as specified in SP-422 Heatup/Cooldown Surveillance.
Slowly decrease Reactor Demand to 10\.
6.2.8 During RCS Cooldown, batch water from sources selected 6.1.5 to the makeup tank to maintain level above the Low Level Alarm and I 86*.
6.2.8.1 Transfer auxiliary steam supply from main steam to Unit 1 l3'
& 2 per OP-606, Section 8.0.
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6.2.9 The requirements of SP-441, Unit Shutdown Surveillance Plan, have been satisfied prior to descending into Mode 2 or 3.
6.2.10 The requirements of SP-441, Unit Shutdown Surveillance Plan, following entry into Mode 2 have been satisfied.
6.2.11 Gradually reduce reactor power to 5% while monitoringcool-down rate.
6.2.12 Cooldown rate should be commensurate with RC inventory.
6.2.13 As makeup tank level decreases due to contraction of the RC system, batch into the makeup system the calculated quantities of Step 6.1.5 of this procedure per OP-402, Makeup and Purification System.
OP-208 Rev. 31 Page 6
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6.2.14 Ensure that the following valves / controls are positioned as indicated:
VALVE NO. DESCRIPTION POS FWV-36 SU FW Block 'A' Open FWV-33 SU FW Block *B" Open FWV-31 Low Load FW Block "A" Closed FWV-32 Low Load FW Block *B' Closed FWV-30 Main FW Block "B" Closed FWV-29 Main FW Block "A" Closed FWV-30 Toggle Switch 'B' Manual FWV-29 Toggle Switch 'A' Manual FWV-28 FW Dis. Crosstie Open RHV-13 Steam to Main FWP "B" Open RHV-14 Steam to Main FWP 'A' Open ASV-21 Aux. Sta. to Main FWP 'A' Open ASV-22 Aux. Sta. to Main FWP "B' Open 6.2.15 Commence continuous FW flow to the steam generators via the manual bypass valves (FWV-155 and FWV-156).
6.2.16 Place Diamond station in ' Manual
- and gradually decrease reactor power to 10-8 amps while monitoring cooldown rate.
6.2.17 At 10-8 amps, log the following:
- a. Rod Configuration (percent withdrawn)
Group 5 Group 7
- Group 6 Group 8
- b. Boron Concentration: ppab
- c. Time Date
- d. T(ave) 6.2.18 If plant cooldown is anticipated, come to three RC pump operation per OP-302, RC Pump Operation and go to OP-211, Reactor Shutdown.
Shift Supervisor Date l
f OP-208 ' '
Revb 31 i
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7.0 TURBINE GERIERATOR SHUTDOW5 Initia1/Date 7.1 INITIAL CONDITIONS 7.1.1 Plant load is less than 140 MWe per Section 8.0 of OP-204, Power Operation.
7.1.2 ' Operator Auto' at the EHC panel is selected.
7.2 PROCEDURE 7.2.1 Set " Speed / Load" setter to 5.0% valve position (approximately 40 MWe).
7.2.1.1 Before removing turbine / generator from service, ensure RC pumps' power supply has been transferred to startup transformer per OP-703, Plant Distribution System, Section 9.0.
7.2.1.2 Before removing turbine / generator from service, ensure the Start-up and Auxiliary transformers fan / pump controls are in the auto mode, and the step-up transformers fan / pump controls are in the manual mode.
7.2.2 Set load rat ~e at desired rate of load decrease.
7.2.3 Notify the System Load Dispatcher that the unit is coming off-line.
Depress the 'Go" pushbutton on the EHC panel.
7.2.4 When the generator output is less than 45 MWe, open the l29 generator breakers (1661 and 1662) /
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T Initial /Date 7.2.5 Place covers on cold reheat safety valve exhaust lines and close drain valves RHV-143, RHV-144, RHV-145 and RHV-146.
7.2.6 Place the " Voltage Regulator Control' in the 'Off" position.
7.2.7 Open the field breaker and immediately press the " Turbine Auto Stop Trip
- pushbutton.
7.2.8 Start the AC bearing oil pump.
7.2.9 Start the bearing oil lift pump.
7.2.10 Start the seal oil backup pump.
7.2.11 Cooling water flow through the hydrogen coolers should continue to be controlled by SCV-12. If control is inadequate, close SCV-14.
7.2.12 Place turning gear control switch to " Auto".
7.2.13 Maintain the oil temperature leaving the lube oil coolers at approximately 95'F.
7.2.14 Verify that the turbine goes on turning gear at 0 rpm.
7.2.15 Bypass LOP-1 discharge filters to prevent wateraccumula-tion that will destroy filters.
7.2.16 Open and red tag for S500 the following breakers and l3C switches: l MOS-1873 (requires dispatcher concurrence)
Breaker 3101 3102 3201 3207 3202 3208 Switch " Generator 83 Field Lockout Relays' l30 CP-208 Rev. Page 9 31
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V NOTE: If necessary to tag aml . ground generator for maintenance work, perform Steps 7.2.17 thru 7.2.20. If no tags are necessary, skip to Step 7.2.21.
7.2.17 Install grounding breaker in 3101 and 3201 per instructions on the grounding breaker.
7.2.18 Have potential transformers (PT's) removed for phases 'A',
'B', and 'C'.
7.2.19 Have grounds installed on phases 'A", 'B', and 'C'.
7.2.20 Red tag PT grounds to SSOD.
7.2.21 Continue with Step 6.2.8 of this procedure.
HICLOSURES - None i
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