ML19296C568

Forwards Response to NRC 790802 Ltr Re Secondary Water Chemistry Control

ML19296C568
Person / Time
Site:	Farley
Issue date:	09/17/1979
From:	Clayton F ALABAMA POWER CO.
To:	Stolz J Office of Nuclear Reactor Regulation
References
NUDOCS 8002260655
Download: ML19296C568 (19)

Text

600 North 18th Street . -

Pest Office mox 2641 t.

. Birmingham, Alabama Telephone 205 323-5341 5 35291(* * . [5 m-L';,TC7C;ffin, Alabama Power the southem eiectric system September 17, 1979 Dachat No. 50-364

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.y 3 1919 Dirac cr of Nucisar ?.eactor Regulation 6fi ,geesy. . ,

U. S. Nuclear Regulatory Co= mission ,)pn ccm]{g,gy a k'a shing to n , D . C . 20555 tide"geputmtS 0-'M" Atta: Mr. John F. Stol:

Dear Mr. Stol:

R.E: Secondary liater Chemistry Control J. M. Farley Nuclear Plant Unit 2 Alabama Power Ccapany's response to your letter dated August 2,1979 on this subject is attached. Detailed procedures will be.available at Farley Nuclear Ilant for review.

If you have questions please advise.

Yours truly, b& b nn F. L. Clayton, r.

FLCJr/TNE:bhj Attachment ec: Mr. A. R. farten (w/ Attachment)

Mr. J. T~ Teung (w/ Attachment)

Mr. H. O. Th ash (w/ Attachment)

Mr. II. G. Eairston(w/ Attachment)

Mr. K. ii. McCracke.4 (w/ Attachment)

Mr. Ozen 3atus (w/ Attachment)

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

Mr. T. N. Epps (w/ Attachment) p\

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t JOSEPH M. FARLEY NUCLEAR PLANT UNIT Nr 2 SECONDARY WATER CHEMIS*;RY MONITORING PROGRAM Procedures have been written to imple=ent a secondary water chemistry monitoring program for Unit No. 2 at the Joseph M. Farley Nuclear Plant.

A major oMactive of this prcgram is to inhibit steam generator tube degradation.

This prog a= described '- N CCP-103, " Secondary Water Chemistry Monitoring Program" in-5 -des A. Sa=pling schedule for the critical secondary water chemistry paraneters. (Attachment 1).

Sampling will be perfor=ed in accordance with the schedule specified in FNP-0-CCP-101, " Schedule, Chemistry and Water Treatment Plant Activities," Table 12.

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

Results from analyses will be compared to the centrol point specifications listed in FNP-0-CCP-102, " Water Chemistry Specifications," Table 12 to determine if corrective action is required.

C. Procedures for ceasuring critical paraceters.

Control point. para =eters specified in FNP-0-CCP-102 will be analyzed in accordance t.-ith 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

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FNP-0-CC?-5 The Determination of Dissolved Oxygen in Aqueous Solutions FNP-0-CC?-10 Determination of Hydrazine FNP-0-CCP-20 Detarmination of Free Hydroxide FNP-0-CCF-66 Calibration and Operation of the Hays Dissolved Oxygen Analyzer FNP-0-CC 3-67 Cperation and Calibration of the Cambridge Mark IV Hydrazine Analyzer FNP-0-CCP-70 Operation of the Larson-Lane Condensate

' Analyzers

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D. Process Sampling Points (Attach =ent 3)

The process sa=pling points which will be monitored are:

1. Steam generator blowdown

2. Steam generator upper tap

3. Main steam

4. Steam generator outlet

5. Condenser hotwells

5. Condensate pu=7 discharge

7. Stea= generator feedpump inlet -

5. Peedwater 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:

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

FNP-2-A0P-25.0 Unit 2 Condenser Leakage

-- (In preparation-Expected to parallel the approved Unit 1 procedure FNP-1-AOP-25)

G. Program Ad=inistration

1. Interpretation of Data The Che:istry & Health Physics Supervisor is responsible for supervision of.the Secondary Fater Chemistry Monitoring Program.

The Che=1stry- Foreman is responsible for review and trending of chemistry data.

2. Initiation.of Corrective Action

a. The chemistry technician on shift is responsible for report-ing out of specification conditions to C6HP supervision and to the Unit Operator as soon as practical following dis-Cover 7

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

" Procedures Defining Corrective Action" (See Section F above).

w ATTACHMENT 1 ( .

TABLE 12 STEMi GENERATORS /FEEDWATER/ CONDENSATE / MAIN STEAM / STEAM GENERATOI OUTLET Frequency Weekly Monthly First Third M Tu W Th F Sa Su Week Week MODE 3 _ & 2 FEEEWATER .

pH (inline & X X X X X X X grab 1

Specific X X X X X X X Conductivity 2 X X X X X X X Silica Ammonia X X X Hydrazine X X X X X X X

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(inline&grnh) l Oxygen X X X X X X X (inline@) r i

Iron X Copper X 1 Cation Con- X X X X X X X l ductivity 4 MODE 1 PEN STEM 1

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Sodium. X pH X X'  ?.

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

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

Silica X IInline instnw..t read.ing

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2 Inline instrtrent reading daily, grab sartple on Thursday only Sheet 1 of 3

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TABLE 12 (Continued)

Frequency i

Weekly Monthly First Third M Tu W Th F Sa Su Week Week MODES 1,2,3,4 STEAM GENERATORS pH X X. X X X X X Esis0atirity x x x x x x x Sodic: X thloride X X X X X X X

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Fluoride X Oxygen X X X Hydrazine X X X X X X X Suspended X X Solids 2

Gross 6,-( X X X X X X X degassed X

• Tritium Free Hy ddde X X X X X X X Spec. Ccad. X X X X X X X f cace/31 days if gross l activity >0.01 pCi/gm; once/6 ncnths if gross

• Dose Eqcivalent I.131 (activity < 0.OlpCi/gm j Ammonia X X X X X X X .

Silica X X X X X X X 8 Once/ month f Flow Once/ month 3011 & Grease Once/ month 3 Suspended Solids 8

. Once/ month Copper Once/ month

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

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

• Not required on weekend if cation conductivity is operational.

• • After primary to secondary leaks are detected.

Sheet 2 of 7

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. TABLE 12 (Continued Frequency Weekly . Monthly First Third M Tu W Th F Sa Su Week Week MODES 1,2 CONDENSATE 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 Cend..B C.C. X X X X X X X MODE 1 STEAM GENERATOR OUTLET

-- Spec. Cond. X X X X X X X Cation Cond. X X X X Z X X 8 Silica X X X X X X X 1

MODES 5 and 6 STEA!i GENERATORS pH X Chloride X Hydrarine X Dissolved Oxygen X ,

I NPDES parameters listed under MOLZS 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.

8 Inline instrument readings; grab sample on Thursdays only.

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ATTACHMENT 2

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TABLE 12 1 STEAM GENERATORS /FEEDWATER MODE 1 - NomiAL Feedwater:

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

O'"cived Oxygen - < 5 ppb ,

Blowdown:

pH @ 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 'l I D.E. I-131 - <0.10 uCi/ gram MODE 1 - LIMITI:G'AVT SPECIFICATIONS

.Blowdcwn:

Two Weeks 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> immediate pH @ 25 C 8.5-9.2 N/A <8.5 or >9.4 C?. tion Ccnductivity

_ 1r.hes/cm @250C >2. 0 but <7 N/A >7 Free Hydroxide ppm as CACO 3 N/A >0.15 but <l.0 >1.0 MODE 2.

Feedwater

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

Dissolved Oxygen - <100 ppb 1

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9 Blowdown:

pH @ 2.iO C - 8.5 - 10.0 Free Hydroxide - 0.15 ppm as CACO 3 (max.)

Cation Conductivity - 7 pmhos/cm (max.)

1 Gross 8,y (degassed) - Compare to D.E. I-131 limit 1 2D. E. I-131 - < 0.10 uCi/ gram MODE 3, 4, and.ECT FUNCTIONAL

- Bicwdown:

pH 8.8 to 9.2 0.250 C Free Hydroxide 0.15 ppm as CACO 3 (max. )

Cation conductivity 2.0 pmhos/cm at 25 C (max.)

3 GrossS,y (degassed) Compare to D. E. I-131 limit ID.E.I-131 < 0.10 uCi/ gram MODE 5, and 6 Blowdown:

pH 10.0 to 10.5 @ 250 C Free Hydroxide Non-detectable 1 Chloride 0.5 ppm (max.)

Hydrazine 75 to 150 ppm Dissolved Oxygen 100 ppb (max.)

I LCO-Modes 1, 2, 3, and 4 Wi*.h the specific activity of the secondary coolant system >0.10 uCi/ gram DCSE EQUIVALENT 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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Attachment,3 Condensate pump diccharge sa=ple L

Hotwell ,

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Sampla h

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ndensers Low Pressure Heaters Hotwell -

H A Hotwell

.-cr' H -1 -l Hotwell_sa=ple Steam Generator Outlet _sa=ples Steam Generator Feed Pu=p Inlet Sample u Main Steam Sa=ple 4 8 Steam Generator A Feedvater Sample .

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. Main Steam Sample V  :

Blowdown High Y SGBD St= Gen 3  : Pressure Sample , Heaters Upper Tap Stm Gen C_ '

V-Sample ' ' Feedwater Pumps Secondary . ; .c.c.as Sample Pointj

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l 8.0 Records and Reports 8.1 Operating Records The Ch= ' etry and Health Physics Group will utilire one or more of five types of operating records.

(1) Leg-A legal notebook with number pages. The results of tests and surveys may be logged directly or trans-ferred from the work sh'eet.

(2) CHP Forms-Loose leaf forms which have preprinted headings for pertinent data. Loose leaf forms may be single sheets or multip:.e sheet.= , when duplicate copies are required.

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

recorders.

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(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 analysis 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 beccme parr of the plant files.

Periodically, copies of -'erating logs, FNP Forms, Charts and Computer Pri.c uts will be sent to documen control for inclusion in the plant files. Table 1 co tains a list of records 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

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have been met.

8.2.2 The C&HP Foreman 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 attenticn.

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 c-4terial has been met, (4) the completion of ECF's has been reported to the Control Room. 1 S.2.3 0' data forwarded to Document Control or the T e c'1. Group will go through the C&HP Supervisor.

He will scan most data and randomly pick some .

data for a detailed review to determine if the requirenients for collecting and evaluating data are being met.

8.3 Repo:-ting Requirements The C&EP._ Group will prepare reports as listed in Table 1.

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. , Sheet 1 ,'

" Description of Record Frequency to Requirement Record Document Control Retention Plant Cha 4"try Daily Chemistry Report- monthly FSAR 16.6.5.2 permanant

1) 13.6.2 Reactor Coolant and Secondar;' System RTS 3.4.7 AP 17 Monthly C - 'stry R=T__. - monthly FSAR 16.6.5.2 permanent 2)

Reactor Coolant System 13.6.2

. . RTS 3.4.7 -

AP 17

3) Monthly Chemistry Report-Secondary System monthly AP 17 permanent

4) Monthly Chemistry Repont- monthly AP .7 permanent Steam Generator Monthly Chemistry Report- monthly AP 17 permanent 5)

Water Treatment. Plant .

6) Water Analysis & Sample Rooms-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 ETRS Deminer'1i-ars monthly AP 17 permanent

10) Monthly Chemistry Report- monthly- AP 17 permanent Storage Tanks ll) Monthly Chemistry Report- monthly AP 17 permanent Auxiliary Systems ,

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 System AP 17 permanen-

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Table 1 Document Control Records

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Sheet 2 Frequency to Requirement Record Description.cf Record Retentic Document Control Plant Chemistry monthly AP 17 permanen

5) Monthly Chemistry Report-Service Wa ter Sys'=--

Monthly Cha-i stry Re__ - monthly AP 17 permanen 5)

Circula+ ' g ;iater S . - --

Weekly NPDIS Report- monthly NPDES permit ,3 year

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5.2 Control of operating parameters 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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5.2.2 Modes 3 and 4-Hot Standby and Hot Shutdown 5.2.2.1 'Hydrazine will be added for 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 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 demineralizers and returning the blowdown to the condensbr.

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 modes 3 and 4 (paragraph 5.2.2).

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. . ATTACHMENT 6 (m

FARLEY NUCLEAR PLANT UNIT 1 ABNORMAL OPERATING PROCEDURE CONDENSER LEAKAGE 1.0 Puruose To provide the symptoms, automatic actions, immediate operator actions, and subsequent operator actions for a condenser leak which allows circulating water to en" ne condensate system.

M sw_ m 2.1 The Shift Foreman has been notified by the '

Chemistry Group that a possible condenser tube lealc-exists.

NOTE: There are no control room parameters which can be monitored to determine if a 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 Auxiliary Building.

3.0 Automatic Actions None 4.0 Immediate Ocerator 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).

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 Subsecuent Operator Actions NOTE: Reduce power to the level necessary to allow

- actions specified in following paragraphs to be completed.

5.1 SGBD cation conductivity remains < 2 pmhos/c:n.

5.7 1 Reduce power to 600MW NOTE: Power reduction can be delayed, for a period not to exceed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, to meet load demands.

5 .1.2. Determine, from the chenistry data,

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which half of the condenser contains the 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.

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

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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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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 5.2.1 Commence an orderly power reduction to 600MW.

5.2.2 Isolate condensate dump to condensate storage tank.

If necessary to reduce Hotwell Level, 5.2.3 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

< 7 pmhos/cm return to rated power. Maintain SGBD at maximum rate until chemistry indicates S/G's are clean.

5.2.5.2 With SGBD cation conductivity

> 7 pmhos/cm.

a. Place unit in hot standby

b. Perform steps 5.3.5 through 5.3.10

c. Maintain SGBD at maximum rate, and condensate dump to CST isolated until notified by Chemistry Group.

5.3 SGED cation conductivity > 7 pmhos/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 feedwate'r and transfer to auxiliary feedwater.

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5.3.5 Cooldown to Tave 1 5400F 5.3.6 Close MSIV's and break condenser vacudm.

5.'3.7 When condensate and feedwater are <

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

5.38 Flush condensate and Feedwater Systems per Chemistry Group instructions.

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When condenser cation conductivity is 1 0.5 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 endpoint chemistry parameters, and proceed as directed.

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

-- 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 4