ML20066C826

Rev a to IOP-10,Unit On-Line from Hot Standby or Hot Shutdown

ML20066C826
Person / Time
Site:	05000605
Issue date:	01/09/1991
From:	Torres W GENERAL ELECTRIC CO.
To:
Shared Package
ML20066C783	List: ML20066C781 ML20066C799 ML20066C803 ML20066C806 ML20066C809 ML20066C811 ML20066C813 ML20066C815 ML20066C817 ML20066C818 ML20066C820 ML20066C823 ML20066C826
References
23A6169AK, 23A616AK-RA, NUDOCS 9101110246
Download: ML20066C826 (7)

Text

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                                   &                                  GE Nucloar Energy 23A6160AK 4tv     A SH NO . 2

) TABLE OF CONTENTS QADA

1. SCOPE / APPLICABILITY 3

2. DISCUSSION 3

3. PRECAUTIONS AND LIMITATIONS 3

4. PREREQUISITES 4

5. PROCEDURE 5 5.1 Unit On-Une from Hot Standby or Hot Shutdown (MSIVs Open) 5 5.2 Unit On-Une from Hot Shutdown (Reactor Isolated) 6

6. REFERENCES 7 1

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     &                 GE Nuclear Energy 23A6169AK pry   A SH No 3 1.0  SCOPE / APPLICABILITY This procedure provides the detalled instructions for proceeding from a Hot Standby or Hot Shutdcwn condition to a power level where turbine roll and generator synchronization can commence.

2.0 DISCUSSION The plant conditions of Hot Standby and Hot Shutdown are defined as follows: < Condition Mode Switch Position Avernoe Reactor Coolant Temneraturo Hot Standby STARTUP/ HOT STANDBY Any temperature Hot Shutdown SHUTDOWN > 93 'O This procedure out!ines the steps required to take the reactor from a Hot Standby or Hot Shutdown mode as established per IOP 8,

• Unit Off Line to Hot Standby or Hot Shutdown', or IOP 9, " Maintaining Hot Standby or Hot Shutdown".

3.0 PRECAUTIONS AND LIMITATIONS 3.1 Reactor coolant system temperature [G33 TE 100; and pressure shall be determined to be within the applicable limits o' Technical heatup and pressurzation).Specliication Figure;later at least once per 3 3.2 Maintain drywell pressure (B11 PIS 606 A 8,C,D)less than [ 0.00 kg/cm2 Jin order to prevent inadvertent containment isolation and ECCS initiation. 3.3 Maintain drywell average temperature (to be defined later) less than ( 57 'C).

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                                &             GE Nucient Energy 23A6169AK Arv    A sH tc. 4 3.0 PRECAUTIONS AND LIMITATION 8(continued) 3.4 Reactor vessellove![C31 LT N004A,B,C,D] should be maintained i

between 425.5 cm and 448.5 cm throughout plant heatup by rejecting water using the Low Flow Control Mode of the Feedwater Control System and the drain flow control valvo in the Reactor Water Cleanup i System. The rejection rate should be limited so that the CUW filter a i domineralizer inlet temperature does not exceed [49 'C).

3.5 Perform a rod coupling check when a rod is fully withdiawn, if a rod i uncoupling annunciator is received, refer to [ procedure for Control i Rod Uncoupled). I 3.6 Do not operate the mechanical vacuum pumps [ldentity, later) at reactor powers greater than (5) %.

l 3.7 Maintain the temperature differential between the core exit i e, coolant (TE-later) and bottom head draln coolant (TE-later)less than 1 [37 'O ). l ! 3.8 Do not increase reactor power or recirculation flow if temperature differential between steam dome and bottom head drain exceeds [37

                                         *C).
;                                4.0 PREREQUISITES 4.1 Privr to rolling the reactor feedpump turbine above tuming gear speed, it must have been rotating on the tuming gear for a minimum of [2] houm. Refer to SOP-[later;,

• Condensate and Feedwater System'.

4.2 Prior to rolling the main turbine, it must be rotating on the tuming gear for a minimum of [4] hours. Refer to SOP-[later),' Main Turbine System *. 4.3 Plant conditions are as established per IOP-8, ' Unit Off-Line to Hot Standby or Hot Shutdown *, or IOP-9, ' Maintaining Hot Standby or Hot Shutdown *.- t 4

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                              &i                     GE Nuclear Energy 23A6169AK      GH n 6 4                                                                                                                   Arv    A i

l 5.0 PROCEDURE 5.1 Unit On Une from Hot Standby or Hot Shutdown (MSIVs Open) , 5.1.1 It reactor la suberitical, withdraw control rode to bring the i reactor to criticality and into the heating range SRNMS j indication range later ) per applicable steps of[IOP-1, j

• Approach to Criticality".

5.1.2 - Establish and maintain a heatup rate of [specified later). 5.1.3 If necessary, place the Steam Seal Evaporator into service and shutdown the Auxiliary Boller Refer to SOP-(later),

                                                        ' Steam Seal Evaporator System".

5.1.4 - Place the main SJAEs into service per SOP-[later),

• Condenser Evacuation System". Verify that main condenser vacuum is maintained and shut down the startup SJAEs.

f l 5.1.5 If RPV pressure exceeds 40 kg/cm2, place the motor driven reactor feed pump into servios per SOP-[later), " Condensate and Feedwater System". ' 5.1.6 Continue reactor heatup and pressurization per Subsection 5.7 of IOP 2, *Heatup and Pressurization". i t s h f

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     &                                           GE Nuclear Energy 23A6169AK Ary sH hio. 6 A

5.2 Unit On Line from Hot Shutdown ( Reactor isolated) 5.2.1 Establish main condenser vacuum,if necessary;per Subsection 5.1 of LOP 1, ' Approach to Criticality .  ! 5.2.2 Establish feedwater flow to the reactor vessel as follows: 5.2.2.1 Align the Condensate and Feedwater Systan provide makeup water to the reactor with " and one HPCP in the Low Flow Control  ; SOP-[later), 'Feedwater Control System 5.2.2.2 After establishing makeup to the reactor ve ... shutdown the RCIC System to Standby Reuness , Jr SOP-E51,

• Reactor Core Isolation Cooling System , w i

5.2.3 Open valve B21-151 to equalize pressure across the ' l , Open the outboard MSIVs and then open the inboaru ; A.. Operate the main steamline drain valves in accordance Wiih Subsection 5.0 of SOP B21, ' Nuclear Boller System". 5.2.4 Withdraw control rods to bring the reactor to critic -tv and into the heating range [SRNMS Indication range, later) per Subsection 5.2 of IOP-1, ' Approach to Criticality". 5.2.5 Maintain a specified reactor heatup rate. 5.2.6 Commence warmup of a feed) ump turbine per SOP-[later)," Condensate anc Feedwater Control System *. 5.2.7 Commence main turbine shell and chest warming per SOP- [later), ' Main Turbine System",11 necessary. 5.2.8 Start the Gland Seal Evaporator and transfer sealing steam from the Auxiliary Boller, 5.2.9 Place the main SJAEs into service per SOP-{later), " Main Condenser Evacuation System". 5.2.10 Verify that condenser vacuum is maintained with main SJAE operation and shut down the startup SJAEs. is i

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                                                &               GE Nuclear Energy 23AsicoAK RFv    A sH No. 7 i

5.2 Unit On Line from Hot Shutdown ( Reactor Isolated)(continuw) ! 5.2.11 At (40 kg/cm2 : reactor pressure.or above, start the motor driven 1eedpump, and place it into service to control water level in the Low Flow Control Mode in accordance with SOP C31. "Feedwater Control System'. 5.2.12 If applicable, remove RHR from the Suppression Pool Cooling Mode when suppression pool temperature is less than [later), and place the system in standby readiness per SOP E11

• Residual Host Removal System *.

- 5.2.13 Continue reactor startup per Step 5.7.3 of LOP-2, 'Heatup i and Pressurization *,

6.0 REFERENCES

None. l l l

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