ML19318D071

Forwards Requested Addl Info Re Steam Generator Tube Integrity

ML19318D071
Person / Time
Site:	Farley
Issue date:	06/27/1980
From:	Clayton F ALABAMA POWER CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
NUDOCS 8007070292
Download: ML19318D071 (4)

Text

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% Alabama Power Company 600 North 18th Street Post Office Box 2641 Birmmgham. Alaesina 35291

'ielephone 205 323-5341 h k L';; CW,'?,"; fen, Alabama Power th? Scutrem WW!nc SVSithT June 27, 1980 Docket No.50-35h Director of Nuclear Reactor Regulation ,

U. S. Nuclear Regulatory Commission

'4ashington, D. C. 20555 Attention: Mr. A. Schwencer Joseph M. Farley Nuclear Plant - Unit 2 Steam Generator Tube Integrity Gentlemen:

Per URC request, attached is additional information on the above subject.

Yours very truly, n _.  !

% [s .1 Jo .ckx Gw -#

F."L. C'ayton,',Jr.

CL3/rt Attachments cc: Mr. R. A. Thomas Mr. G. F. Trowbridge Mr. 'd. Bradford

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8007070 M S $

STEAM JENERATCR _'J2E IUTEOR'TY

1. :7C Re,uiremen'. : The license vill be c:r.iitioned to reluire repairing er plug 6ing O f main en-denser tubes within 96 hcars of the time condencer leakage is confirmed.

Resnonse: See Appendix cttached. I .

2. URC Recuirement: Inspection ports are reruired to be installed in each steam generator prior to startup after the first refueling.

Respense: Alatama Power Company vill insta 1 one (1) inspection pcrt above the upper tube support plate level in each steam generator prior to startup after first refueling. The size of the port is undetermined at this time.

"3. tiRC Requirement: Row 1 tubet of each stean generator must be plugged prior to initial startup.

Restonse: At this time Alabams Power Company does not believe that pluggin'g the row 1 tubes prior to initial startup is necessary.

• Isote: It is our understanding from meeting with Mr. Eisenhut of HRC on June 2h,1980, that this is no longer a :RC requirement.

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APPENDIX STEAM CENERATOR TUBE INTEGRITY NRC POSITION

1. The license will be conditioned to require repairing or plugging of main condenser tubes within 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> of the time condenser leakage is confirmed.

APCO RESPONSE

1. Alabama Power has a comprehensive analytical program in effect for the secondary system of Farley Unit No. 1. This same program will also be implemented for Farley Unit No. 2 when it becomes operational.

Th19 program requires sampling and analysis of the condenser condensate, the steam generator feedwater, the steam generator blowdown and st eam for parameters, which are indicative of condenser

, . leakage. The details of this program was submitted to the NRC in a letter to 'fr. John F. Stolz, dated September 17, 1979. (Copy attached)

2. As part of the abnormal operating procedures presently employed for Farley, operational limits are established based upon steam generator blowdown (SGBD) cation conductivity. Essentially these limits with action levels are as follows:

a. For intermediate range condenser tube leaks which are indicated by the SGBD cation conductivity being out of specification for steady state operation, power is reduced in an orderly manner for plugging the leak (s). Cheaistry data is used to determine the affected half of the condenser, the appropriate water box is then opened to locate the leak (s) and repairs are made. A time limit is placed upon this action which is less than that proposed by'the staff.

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b. For large condenser tube leaks which .are indicated by a prompt jump in the SGBD cation conductivity to values significantly above_ specifications, the unit is placed in hot standby at the maximum safe rate. The leak is then located and repaired as i

described above.

3. For suspected small, weeping-type leaks indicated by an unexplained -

perturbation in SGBD cation conductivity, an investigation is required.

If a condenser leak is located appropriate repairs are made.

Alabama Power Company is of the opinion that 'a commitment to find and repair leaks, which do not result in contaminant levels in the steam generators in excess of the secondary system chemistry spe cifications within 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> is unrealistic. Because of the high sensitivity of the available analytica1' tools leaks of the order of 0.01 to 0.1 gpm can be detected. However, locating the source which may be from several tiny " weeps" may be impossible even if the time period could be extended without limic. We feel that maintaining the feedwater quality in the steam generators, as reflected by the SGBD cation  !

l conductivity, is much more important than the arbitrary application of a time limit for locating and repairing condenser leaks.

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. sweveme ruwe w w .s

, 600 Nortn 18th Street ,

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1. ' Post Off:ce som 2541 Birmingham. Alabama 33291 '

Telephone 205 323-5341 AV -

,hyg,4,$2, AlabamaPower thesouthem e'ecvicsystem

- September 17, 1979 Dochet No. 50-364

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Director of Nucle.ar Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Attn: Mr. John F. Stolz

Dear Mr. Stols:

RE: Secondary Water Chemistry Control J. M. Farley Nuclear ?lant Unit 2 Alaba=a Power Co=pany's response to your letter dated August 2,1979 on this subject is attached. Detailed procedures will be. available at Farley Nuclear Plan: for review.

If you have questions please advise.

Yours truly, F. . Clayton, r. j FLCJr/TNE:bhj ,

Attachment cc: Mr. A. R. Barton (w/ Attachment)

.Mr. J. T. Young (w/ Attach =ent)

Mr. H. O. Thrash (w/ Attachment)

Mr. W. G. Hairston(w/ Attach =ent)

Mr. K. W. McCracken (w/ Attachment)

Mr. Ozen Batum (w/ Attachment)

Mr. B. J. George (w/ Attachment) i l

Mr. T. N. Epps (w/ Attachment) #

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.h0SEPHM.FARLEYNUCLEARPLANT

. UNIT NO. 2 SECONDARY WATER CHEMISTRY MONITORING PROGRAM ,

Procedures have be.en written to implement a secondary water chemistry monitoring program for Unit No. 2 at the Joseph M. Farley Nuclear Plant.

A major objective of +4 program is to inhibit steam generator tube degradation.

This progran described in FNP-0-CCP-103, " Secondary Water Chemistry Monitoring Program" in '" des A. Sampling. schedule for the critical secondary water chemistry parameters. (Attachment 1).

Sampling will.be-performud in accordance with' the schedule specified in FNP-0-CCP-101,." Schedule, Chemistry and Water Treatment Plant Activities," Tabla.11.

B. Control specifications-(points) for the critical secondary water chemistry paramarers. (Attachment 2).

Results from analyses will be compared to the control point' ,

specifications listed in FNP-0-CCP-102, " Water Chemistry

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Specifications," Table 12.to determine if corrective action is required.

C. Procedures for ceasaring critical parameters.

Control point paramaters specified in FNP-0-CCP-102 will be analyzed in accordance.vittt_the.following analysis procedures:

FNP-0-CCP-2 Determination of the pH of an ,

Aqueous Solution FNP-0-CCP-3 The Determination of Chloride

- Ion in Water FNP-0-CCP-5 The Determination of Dissolved Oxygen in Aqueous Solutions FNP-0-CCP-10 Determination of. Hydrazine FNP-0-CCP-20 Determinatict of Free Hydroxide FNP-0-CCP-66 Calibration ind Operation of the Hays Dissolved Oxygen Analyzer FN?-0-CCP-67 Operation and Calibration of the Cambridge Mark IV Hydrazine Analyzer FNP-0-CCP-70 Operation of the Larson-Lane Condensate Analyzers

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i D. Process Sampling Points, (Attach =ent 3)

The process sampling points which will be monitored are:

1. Steam generator blowdown

2. Steam generator upper tap

- 3. Ifain stean -

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4. Steam generator outlet

5. Condenser hotwells

6. Condensate pump discl$arge  :

7. Steam generator feedpump inlet .

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1. 7eedwater 1 1

=. I E. Recording and Management of Data (Attachment 4) .

Analytical data will be managed in accordance with FNP-0-AP-17,

" Chemistry & Health Physics Conduct of Operations", section 8.0.

F. Corrective Actions for Off-Control Point Chemistry Conditions (Attachments 5 & 6).

The procedures which will. be used for corrective action are:

FNP-0-CCP-25 Chemical Addition / Control of the Secondary System, Section 5.2.

. 1 FNP-2-AOP-25.0 Unit 2 Condenser Leakage r -- (In. preparation-Expected to parallel the l approved Unit 1 procedure FNP-1-AOP-25)

G. Program Adninistration ~

1. Interpretarlon of Data The Chemistry & Health Physics Supervisor is responsible for supervision of the Secondary Water Chemistry Monitoring Program.

The-Chemistry Foreman-is responsible for review and trending of, ,

chemistry data.

2. Initiation of_ Corrective Action .

a. The chemistry technician on shif t is responsible for report-ing out of specification conditions to C&HP supervision and.

to.the Unit Operator as soon >s practical following dis-

. covery.

b. Corrective action for out of specification conditions will be taken in accordance with section 3.5, FNP-0-CCP-103,

" Procedures Defining Correctivt

• etion" (See Section F above) .

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c ATTAC10ENT 1 .

FNP-0-CCP-101 l

TABLE 12 ..

STEAM GENERATORS /FEEDWATER/ CONDENSATE / MAIN STEAM / STEAM GENERATOR OUTLET

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Frequency Weekly Monthly First Third X Tu W Th F Sa Su Week Week

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MODEE L & 2 FEEDWATER .

PE'.(inline & X X ~ X' X X X X grab ,

1 X X X Specific X X X X l Conducti'dty 2 Silica X X X X X X X Ammonia X X' X

,.- Hydrazine X X X X X X X anlinesgras) [

Oxygen X X X X X X X

, (i"1inasgrab) gi Iron X l Copper X 1 Cation Con- X X X X X X X [

. ductivity

EODE 1. MAIN STEAM ,

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Sodium. ,

X )

1 pH X X X l r :

1 Specific Con- X X X X X X X .

ductivity 1 Cation Con- X X X X X X X ,

ductivity Silica X I

Inline instnment re. ding

• Inline instn=ent rr ading daily, grab sample on Thursday only TaL2 e 12

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FNP-0-CCP-101'

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TABLE 12 (Continued) .

Frequency j

Weekly Monthly First Third Th F Sa Su Week -

Week M Tu W MODIS 1,2,3,4 STE?ai GENERATORS pH X X X X X X X X X X bEbubti'Iity X X X X ,

--- Sodi= X thloride X X X X X X X Fluoride X Oxygen X X X Hydrazine X X X.X X .X X Suspended X X Solids 1

Gross 6,y X X X X X X X degassed X -

• Tritium Free Hyd=xide X X X X X X X .

Spec. Cend. X X X .X X~X X fonce/31 days if gross P jactivity>0.01pCi/gm; 13,- d once/6 ucnths if gross.

• ' 2 Dose Equivalent I , activity < 0.Oluci/gm ; I

.X X X X X X X ,

Ammonia l X X X X X X X Silica Once/ month

' Flow Once/ month 3011 & Grease once/ month 3 Suspended Solids 8

. Once/ month j Copper

-Once/ month ]

• Iron j ILCO-Modes 1, 2, 3 and 4 (72 hr) 2LCO-Modes 1, 2, 3 and 4 (6 mo/31 da) ,

l l 3 NPDES parameter if discharge through plant dilution line (1/ month) l l

• Not required on weekend if cation conductivity is operaf.ional. d l **After primary to secondary leaks are detected. l Table 12 l Sheet 2 of___3 l

'FNP-0-CCP-101 TABLE 12 (Continued  :

1 Frequency Weekly Monthly i First Third  :

M Tu W Th F Sa Su Week Week MODES 1,2 CONDENSATE 9 Oxygen (inline- & X X X X X X X  ;

- grab)

Ammonia-- X Iron X .

- Copper X Silica ~Not scheduled

, 2 Sodium X X X X X X X -

pH(inline & grab X X X X X X X

' Specific con. 'X X X X X X X Cond..A C.C. X X X X X X X Cond. B C.C. X X X X X X X MODE 1 STEAM GENERATOR OUTLET -

i r- Spec..Cond. X X X X X X X Cation Cond. X X X X X X X 8Sil'ca i X. X X.X X X X MODES 5 and 6 S m i GENERATORS 1 pH X -

Chloride X Hyd ra-i n e X Dissolved Oxygen X ,

I NPDES parameters listed under MODES 1, 2, 3, and 4 must'also be monitored if a discharge is made through the plant diluation line. . .

2 Inline reading; grab sample Thursdays only.

'Inline instrument reaJings; grab sample on Thursdays only.

Table 12 Sheit 3 of 3 Rev. 4 D 9 6

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( ATTACHMENT 2

- { FNP-0-CCP-102 -

TABLE 12 1 STEAM GENERATORS /FEEDWATER MODE 1 - NORMAL ,

_ Feedwater: -

Hydrarine - 5 ppb greater than dis' solved oxygen concauL_ation (Minimum)

" h ved Oxygen - < 5 ppb ,

Elowdown:

pE @ 25 C - 8.5 - 9.0 Free Hydroxide <0.15 ppm as. CACO 3 Cation Conductivity <2.0 pmhos/cm 2

Gross S,Y (degassed) - Compare to D.E. I-131 limit 1 1

_ D.E I-131 - <0.10 uCi/ gram MODE 1 - LIMITING AVT SPECl?ICATIONS

, Blowdown:

Two Weeks- 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> immediate pH @ 250C 8.5-9.2 N/A <8.5 or > 9.4 Cation Ccnductivity umhes/cm @250C >2.0 but <7^ N/A >7

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Free Hydroxide ppm as CACO 3 N/A >0.15 but <l.0 >1.0 MODE 2 Feedwater ,

Hydrazine - 5 ppb greater than dissolved oxygen concentration (Minimum)

Dissolved Oxygen - <100 ppb Tab ~1e 12 1

• Sheet 1 of 2 -

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. C . C FNP-0-CCP-lO2 Blowdown: ,

pH 0 2.iO C - 8.5 - 10. 0 .

Free Hydroxide - 0.15 ppm as CACO 3 I""*-I -

enHnn conductivity - 7 pmhos/ca (max.)

1 Gross S ,y - { degassed) - Compare to D.E. I-131 limit 1 1DrI-131 -- 10.10 uCi/ gram

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MODE 3-, 4, and. eor LL.GiGJ.ONAL

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.El=wdown: .

pH ,8.8 to 9.2 0 250 C Frea Hydroxide d.15 ppm as CACO 3 (max.)

Catiort conductivity 2.0 pmhos/cm at 250 C (max.)

rGrossS,Y (degattaa) Compare to D. E. I-131 limit ' 1

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1D.E.I-131 10.10 uCi/ gram MODE 5, and 6 Blowdown:

pH 10.0 to 10.5 9 250 C Free.-Hydroxide Non-detectable 1 ch l nH de 0. 5 ppm (max. )

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• Hydrarine 75 to 150 ppm Di.s<l.ved oxygen 100 ppb (max.)

LCO-Modes 1, 2, J, and 4 I

With the specific activity of the secon'dary coolant system >0.10 uCi/ gram DOSE EQUIVALEMT I-131, be in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD-SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. ,

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Tabel 32 Sheet 2 of 2 ~

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C . C Attachment,3 .

Condensate pump discharge sample A

Hotwen -- - - - - - -

Sample.

a

" ****#8 ~

Low Pressure Heaters

. Hotwell '

H A Hotwell.

B q' l k - -

n Hotvell-sample-

,# _ r Steam Generator Outlet samples Steam Generator -

Feed Pump 4 '

Inlet Sample I

1 Main Stean Sample 6 e Steam Generator A Feedwater Sample ,

C B ,  ! A Main Steam Sample V M ~

Blowdo High }

SGBD Stn Gen B : Pressure Sample , Heaters Upper Tap Stm Cen C _ D.

Sample j [ Feedwater Pumps Secondary Systems Sample Points

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. - . _ _ - . r_ - -- _ _ __ _ _ _ _ _ , _ ..;-- _ .--

I ATIACIDfEhf 4 '

FN?-0-AP-l~/

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i 8.0 Re e ds and Remorts

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8.1 Operating Records  :

The r w t y and Health Physics Group will utilize one or ,

more- cf five types of operating records.  !

l (1) Log--A legal notebook with number pages. The results l

.of- tests and surveys may be logged directly or trans- l ferred from the work sheet. -

(2) CHP-Forms-Loose leaf forms which have preprinted 1 h= M ngs for pertinent data. Loose leaf forms may i be.-. single. sheets or multiple sheets, when duplicate copies.:are required.

. 1 (3) Charts-Taken from automatic or semi-automatic _ .

. recorders.

(4) -Worksheets-These are informal preprinted or hand printed sheets used to record pertinent data during the conduct of tests and surveys. The in-formation collected on worksheets will be subse-

. quently transferred -to a log or looseleaf form.

Worksheets will be filed after the sheet is com-pleted and.the data has been transferred to the appropriate log or form. .

(5) Computer Printout-The results of computer anal" sis or data logging on hard copy form. Information stored in the memory of onsite computers will constitute an operational data bank but will not be' considered as a record or file for plant history purposes. Computers may. be utilized to -

. prepare reports, from memory bank data, that will become part of the plant files. ,

Periodically, copies of operating logs, FNP Forms, Charts and Computer Printouts will be sent to document control for inclusion in the plant files. Table 1 con-tains a list of recordy and the frequency for sending the data to document control.

8.2 Record Review 8.2.1 The C&HP Technician provides the first line 'of review for data which he/she generates. The 1 Technician will determine if applicable limits (11)

Rev. 1

( { FNP-0-AP-17 have been met. .

8.2.2 The C&HP Fcreman or Power Plant Specialist is the second line of review. The Foreman or

- Specialist will review data to confirm that limits have been met and to determine if .-

there are any trends which need attention .

. For Surveillance Test Procedures the Foreman or Specialist will ensure that: (1) the

- procedure has been completed by a qualified ~

person, (2) the time.timit for performance of the test has'been met, (3) the acceptance criterial has been met, (4) the completion of STP's has-been reported to the Control Room. -

1 8 2.2 A1.1 da.ta forwarded to Document control or thei Tech. Group will go through the C&HP Supervisor. -

He-will 's can most_ data and randomly pick some data for a detailed review to determine if the requiremients for collecting and evaluating data are being met.

8.3 -Reporting. Requirements The C&HP Group will prepare reports as listed in Table -

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( , ( Sh :':;t 1 of. 4 D%:cription of Record Frequencyho Requirement Record Document Control Retention Plant Che,fstry

_1) Daily Cha" Ntry Report- monthly FSAR 16.6.5.2 permanant Reactor Conlant and 13.6.2 Secondary System RTS 3.4.7 AP 17 ,

2) Monthly M stry Re p monthly FSAR 16.6.5.2 permanent Reactor Coolant Sys+ - 13.6.2 RTS 3.4.7 AP 17

. 3)

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Monthly Chamistr" Report-AP 17 permanent Secondary System monthly

4) Monthly Chemistry-Report- monthly AP 17 permanent!

Steam Generator 1

5) Monthly Chemistry Report- monthly AP 17 permanent' e- Water Treatment. El n'-

6) Water Analysis & Sample Rocus-Analyzer Charts monthly AP 17 permanent

7) Water Treatment Plant-- monthly AP 17 permanent Analyzer-Charts

8) Grade A water analysis every two weeks AP 17 permanent

9) Monthly Chemistry Report-CVCS and RTRS Demineralizers monthly AP 17 . permanent

10) Monthly Chemistry Report- monthly- AP 17 permanent l Storage Tanks

11) Monthly Chemistry Report- monthly AP 17 permanent l Auxiliary Systems ,

l 12) Records of chemical analysis upon completion AP 17 permanent instrument calibration

13) chlorination Systems- monthly AP 17 permanent Analyzer Charts

14) Monthly Chemistry Report- monthly Potable Water Systen AP 17 permanent Table 1 Document Control Records Rev. 1

. ( Sheet 2 of 4 Description of Record Erequency to Requirement ~~ Record Document Control Retentiot?

- Plant _ Chemistry ,

Monthly Chemistry Report- monthly AP 17 permanen

15) '

Service Water System Monthly Ch=" utry R=_A - monthly AP 17 permanenQ 16)

--- Circulating Water Si m s l

Weekly NPDES Report- monthly NPDES permit 3'yeard 17)

J er Table 1(Cont'd)

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. FNP-0-CCP-25

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5.2 Contrarl of operating parameters

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5.2.1 Modes 5 and 6-Cold Shutdown and Refueling 5.2.1.1 Hydrazine will- be added for oxygen control and ammonia will be added for pH control. See Table 1 for calculations.

5.2.1.2 Free hydroxide and chloride concen-trations will be controlled by adding makeup quality water. If these parameters approach their limits, the generators can be drained and new makeup water added.

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FNP'0-CCP-25

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5.2.2 Modes 3 and 4-Hot Standby and Hot Shutdown 5.2.2.1 Hydrazine will be added fcr oxygen control and ammonia will be added for pH control.. Refer to Figure 1 and

- Figure 2. .

5.2.2.2. Suspended solids can be removed by increasing blowdown on individual

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S.G.'s.

5.2.2.3 Metal contaminants, chlorides, and cation conductivity can be controlled by . increasing blowdown or by diverting flow through the blowdown demineral'izers '

and returning the blowdown to the condens'er. .

5.2.2.4 Radioactive contaminants can be con-trolled by diverting flow through the blowdown demineralizers.

5.2.3 Modes 1 and 2-Power Operation and Startup Chemical control is the same as for menes

.3 and 4 (paragraph 5.2.2) .

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.- VOL. 5 AOP-25

{ ATTACHMENT 6 FARLEY NUCLEAR PIANT UNIT 1 ABNORMAL OPERATING PROCEDURE AOP-25.0 i

CONDENSER LEAKAGE 1.0 ' Purpose

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To provide th'e-symptoms, automatic actions, immediate operator actions, and subsequent operator actions for a c* dan =ar leak which allows circulating water to en*a -% condensate system. .

2.0 Symo==s 2.1 The Shift Foreman has been notified by the Cham 4stry Group that a possible condenser tube leak exists.

NOT2h There are no control room parameters l which can be monitored to determine if. a l leak:. exists .- The Shift Foreman must-refer to recorded parameters in the Water Analysis Lab (WAL) in the Turbine Building and the Sample Room (SR) in the p-Auxiliary Building. l 1

~3.0 Automatic Actions None 4.0 Immediate Operator Actions .

4 .1. Determine if an actual condenser tube leak exists by referring to recorded parameters in the (WAL) and (SR).

4.1.1 Cation conductivity - The most rapid indication of 'a condenser leak. Increasing-conductivity would be expected on the condensate (WAL), the feedwater (WAL) and steam generator Blowdown (SR).' . l 4.1.2 PH - (SR) will show a measurable increase if the leak is very large but this effect may not be observable on small leaks.

4.2 Request a confirming chemical analysis on steam generator blowdown chlorides. .

4.2.1 This analysis should be used to confirm cation conductivity indications of a leak. .

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5.0 Subsequent Operator Actions -

l NOTEh Reduce power to th'e level necessary to allow actions specified in following paragraphs to be

. completed. ,

5.1 SGBD cation conductivity remains < 2 pmhos/cm.

l 5.1.1 Reduce power to 600MW ,

NOTE: Power reduction can be delayed, l for a period not to exceed 24 l hours, to meet load demands. - I

__ 5 .1. 2. Determine, from the chenistry data,  !

which half of the condenser contains the i leak.

5.1.3 Select a water box in the affected con-denser half, and close the circulating

, water inlet and outlet valves, and open the vent and drain.  ;

i Observe condensate cation conductivity 5.1.4 and fluctuations in vacuum for evidence of leak being uncovered.

r- NOTE: When power is reduced, the cation conductivity will rise because actual concentration of contaminants will increase as a result of decreased con-densate/ steam flow. When the water level in the water box is drained below the leaking tube, the inflow of contaminated water will stop and the cation conductivity will go down.

5.1 5 Open water box as soon as possible during draining. -

, 5.1.5.1 Listen for any sound changes which might indicate location of leak.

5.1.6 If leak is not found return water box and circulating water system to that condenser half to operation per SOP-26.0.

5.1.7 Repeat steps 5.1.3 to 5.1.6 until leaking tubes are found, and defective tubes are plugged.

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VOL. ii -

. (5'NP-i-AOP-25 5 .'1. 8 . When repair is completed return-to desired power level. Maintain SGBD at maximum rate until chemistry indicates S/G's are clean.

5.2 SGBD cation conductivity > 2 pmhos/cm and < 7 ~

pmhos/cm F. 2. 2. Commence an orderly power reduction to l

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600MW. I i

5~.2 2 Isolate cond'ensate dump to condensate  !

storage tank. ,

5.2.3 If necessary to reduce Hotwell Level, ,

open condensate drains. .

'5.2.4 Locate and repair leaking tubes per steps 5.1.2 through 5.1.7.

. 5.2.5 When repairs are completed perform one of the following:

. 5.2.5.1 With SGBD cation conductivity j

< 7 pmhos/cm return to rated 1 power. Maintain SG3D at maximum rate until chemiscry

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indicates S/G's are clean.

1 5.2.5.2 With SGBD cation conductivity  ;

> 7 pmhos/cm.  ;

a. Place unit in hot standby l l

, b. Perform steps 5.3.5 through l 5.3.10 . 1

c. Maintain SGBD at maximum rate,'and condens' ate dump to CST isolated until

. notified by Chemistry Group.

5.3 SGBD cation conductivity > 7 p.nhos/cm 5.3.1 Commence shutdown to hot standby at the maximum rate (Be in hot standby within 30 min.)

5.3.2 Isolate condensate dump to condensate storage tank.

5.3.3 Isolate main feedwater and transfer to auxiliary feedwater.

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5^.3.4 Locate and repair leaking tubes.ter i steps 5.1.2 through 5.1.7.

0 5.3.5 Cooldown to Tave 1 540 F 5.3.6 Close MSIV's and break condenser vacuum. '

5.3.7 When condensate and feedwater are <

.2000 F drain hotwell, condensate, and Feedwater Syst, ems.

5.3.8 Flush condensate and Feedwater Systems per Chemistry Group instructions.

- E.3 9 - When condenser cation conductivity is i O.5 pmhos/cm restore systems to normal per SOP-21.0. ,

- 5.3.10 Determine from the Chemistry Group, the desired course of action, and steam generator endpoirit chemistry parameters,

_and_ proceed as directed. ._

5.3.10.1 If steam generators are not to be drained, flushing should continue until cation conduct-i-

" ivity is 1 7 pmhos/cm and chlorides are 1 0.5 PPM.

. 5.3.10.2 Proceeding to cold shutdown and rinsing steam generator tubes should be considered if the following parameters are exceeded (SGBD).

. a. CL > 3 PPM

b. Cation Conductivity > 35 pmhos/cm l

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4. Rev. 0 n v , - - . - - -- ,r- ,,,.--e --~nw- c- **-- , - ew+--,x-g