ML19254D899

Forwards Description of Facility Program to Monitor & Control Secondary Water Chemistry.Program Will Provide Adequate Assurance of Steam Generator Tube Integrity

ML19254D899
Person / Time
Site:	McGuire, Mcguire
Issue date:	10/25/1979
From:	Parker W DUKE POWER CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
NUDOCS 7910300300
Download: ML19254D899 (12)

Text

,e ,e DUKE POWER CO31PANY Powen Buttoxxo 422 Socin Caracu Stazzi, CnAnt.oriz. N. C. 28242 .

wiwau o. Pannen. s n. October 25, 1979 Vict Patsactu? TE.tpacost:AnCA 704 Sita= Paoovc'io*e 3?3-4083 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Mr. Robert L. Baer, Chief Light Water Reactors Branch No. 2

Subject:

McGuire Nuclear Station Secondary Water Chemistry Monitoring and Control

Dear Mr. Denton:

Attached is a description of the McGuire Nuclear Station program to monitor and control the secondary water chemistry. This information is provided in response to Mr. Robert L. Baer's letter of August 24, 1979. The control of secondary water chemistry in accordance with this program will provide ade-quate assurance of steam generator tube integrity.

Due to the continuing evolution of chemistry control technology the pro-cedures and administrative controls described in this program are subject to modification. Any modifications will be designed in accordance with the operating experience of McGuire Nuclear Station as well as new developments in technology. The program's objective of inhibiting steam generator corro-sion and tube degradation will not change.

Very truly yours,

& & "Z<-. ,i William O. Parker, Jr. g THH:scs Attachment

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7 9103 00 3 0 k

McGuire Nuclear Station Secondary Water Chemistry Monitoring and Control Program Critical secondary water chemistry parameters are monitored and controlled to inhibit steam generator corrosion and tube degradation. The schedule for sampling secondary water chemistry during normal operation is presented in Table 1. Table 2 specifies the acceptance criteria for these critical parameters.

The sample type and the process sampling points are identified in Table 3.

Continuous samples are routed to the Conventional Sampling Laboratory where they are aligned with inline analytical instrumentation. Each sample source is routed to a complement of instruments required to analyze the sample.

Both these samples and other periodic local samples are analyzed according to the appropriate procedure listed in Table 4.

Recording and management of secondary water chemistry data is accomplished through the use of the Secondary Chemistry Daily Data Sheet (Taole 5) and the Secondary Chemistry Data Legal Log (Table 6). Analysis data from both local and continuous samples are recorded on these two forms. The daily data sheet is routed to the Station Chemist each day for his review and use in preparing a daily chemistry report. This report is evaluated by both the System Chemist and the Unit Co-ordinator. Further details of the procedures governing the recording and management of this data are contained in the McGuire Chemistry Manusl.

The appropriate corrective actions for various out-of-specification chemistry parameters are listed in Table 7. The Staion Chemist is responsible for the review of data and the implementation of corrective action. This corrective action is coordinated with either the shift supervisor or the operations duty engineer. Any dif ficulties in implementing the necessary corrective actions are resolved procedurally through the station management channel described in Chapter 13 of the McGuire Final Safety Analysis Report.

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Table 1 r7 C3 SECONDARY CilEMISTRT SAMPLING SCitEDULE '

J NORMAL OPERATION NO TOTAL CROSS Cross O COND C COND 02 Na N2 tig Cl F HILL stb SiOf Cu N1tj 8 y SMD'LE pfl M oe M oe JL JL Jt L, l _fEL JL SOLID JL. FeJL Jpb Jeb _ 9e/cc M ec DTitL 5tese Cenerator 5.D. (A - D) C _C C n n_ n #

_C J/yW_ jfj{ W ___,,,p{ _DT_ ,(a:C1_

Hafn Steam (A - D) C L J c siotoell rump Dsech _C C C* C C' c C 2/W 5/W (c) rollah Demin Effluene C _c_ ,

D D 2/W 5/W WA* W**

reedwater _C ', _C C C C_ _D D D C _2/jt 5/W 3/W D D (d)

C,llester Dr elne ]g ][{ y W W _

C liester Dreine

]/{ g'{ J W W Condeneste Storage Tank _y_ _L W Holeture Separatore (IAI - IC2) n _ L W D Condenser llotwell (IAI - IC2) W D W REYe C = Continuove Hanitor others (a) V - Trittum D = Dolly (b) W - fodine 131-7 3/W = 3 Times '*eekly (c) V - I.ead U - Weekly (d) V - Lead T = Technical Specifications

• = Continunuely Sampled so Pollah Deelnereltter Influent

• • = Conducted on Reelne removed from Spent Celle e e

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Table 3 SECONDARY CllD1ISTRY SAMPLE, TYPE AND LOCATION

.y SYSTEM c SAMPLE TYPE LOCATION 3 BB S/C B.D. - A Continuous CT Lab S/G Sample A Tap (760', Room 321-C) 7*

BB S/G B.D. - B Continuous CT Lab S/C Sample B Tap (760', Room 321-C) e BB S/C.B.D. - C Continuous CT Lab S/d Sample C Tap (760', Room 321-C)

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BB S/G B.D. - D _ Continuous CT Lab'S/G Sample D Tag _(760', Room 321-C)

SM }jain Steam A RoutJpe CT_I,abjS Samnie A Tap _J760', Room 321-C)

SM Malp Steam B Routine CT Lab MS Sample B Tap _(760', Room 321-C)

SM Main Steam C Routine CT Lab MS Sample B Tap (760', Room 321-C)

SM Main Steam D Routine (760', Room 321-C) lCTLabMSSampleBTap J1 . pol _Remin. Eff. _CQD11nUous CT Lab Pol Demin Eff Sample Tap (760' Rn321-C)

CF _ Final Feedwater Continuous _ UT Lab Final IN Sample Tap (760', Room 321-Cl CH llPilD Continuous CT Lab llPilD Sample Tap (760', Room 321-C)

CM LPilD Continuous CT Lab LPilD Sample Tap (760', Room 321-C)

CS Condensate Stg. Tank Routine Local Sample taken at CST (739'+1")

CM llotwell Pump Discharge Continuous CT Lab llotwell Sample Tap (760', Room 321-C)

IIS Moisture Separators Routine Sample Taps from MS Drain Tanks YM _Hi_Stonge Tank Routine CT Lab YM Sample Tap (760't Room 321-C)

CM Polisher Influent Continuous CT Lab Polisher Panel (760', Room 321-C)

CM Polisher "A" Effluent Continuous CT Lab Polisher Panel (760', Room 321-C)

CM Polisher "B" Effluent Continuous CT Lab Polisher Panel (760', Room 321-C)

CM Polisher "C" Effluent Continuous CT Lab Polisher Panel (760', Room 321-C)

CM Polisher "D" Effluent Continuous CT Lab Polisher Panel (760', Room 321-C) llS Moisture Separator Drain Tanks Routine Turbine Bldg. (760'+4")

• CB Auxiliary Electric Boilers Routine Auxiliary Boller Room (760')

Table 4 Secondary hemistry Control Procedure Titles

1. Determination of Specific Conductance and Cation Conductivity of Secondary Systems Using Continuous Flow Analyzers

2. Determination of Hydrazine in Feedwater

3. Determination of 1xygen in High Purity Water

4. Determination of pH cf Condensate Using Continuous Flow Analyzers

5. Determination of Silica in Condensate

6. Determination of Sodtem in Condensate and S/G Blowdown Continuous Flow

7. Determination of pH of Condensate, Alternate Method

8. Determination of pH of Aqueous Solutions as Performed in the Conventional Sampling Lab

9. Determination of Conductivity of Aqueous Solutions as Performed in the Conventional Sampling Lab, Manual Method

10. Determination of Suspended Solids in High Purity Water as Performed in the Conventional Sampling Lab

11. Determination of Dissolved Oxygen in High Purity Water as Performed in the Conventional Sampling Lab

12. Determination of Hydrazine as Performed in the Conventional Sampling Lab

13. Determination of Ammonia in High Purity Wax

14. Determination of Free Caustic in Steam Generator Blowdown Samples k  ? "l

Page 1 of 2 i .

c 960Ys UlnQQML Table 5 n

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SECONDARY CilEMISTRY DAILY DATA SIIEET rape _ sif _

UNIT f 11ATf.

IsNI T $1 ATil5 ,_ BI . . . _

'IEEC CAT. EU5. TOTAL ,

GpO55 T.IORK TRTE COND. COND. 02 Fe H2ttg Cl F 801.1D3 8102 Fe Co )f183 8 T Al Pb 1JRR CAllSTIC 5AHrLE TECil TINE p.d untion unhos g ppb pl.b ppb ppb ppb /Fe ppb ppb ppb ppb pc/cc pc/cc ppb ppb FTU pvb OTilER SIEAtt Gt.NEWA10E B.D. A S1LAtt GtNLMATUK B.D. 8 S1LAtt CENLMATOR b D J HM.H. CUMMME I.D._D HAIN STEAtt A ttA I N S T E.Atj l _ _

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Page 2 of 2

'3 t

Table.5 (Continued) h SECONDARY CilD11STRY DAILY DATA SilEET Pare _ of _

DNig g , DATP.

UNIT STA10$ ,_ SY

• SPEC"YlT. NUs. TOTAL GROff EIO5K FEFE CUND. COND. 02 Na N2 tig Cl F 801.10S 8102 Fe Co Msg B y Al pb TURa CAH5fic HOI 5111RE DRAIN S Altfl.E TECH TIME JII wahos pahos ppb ppb ppb ppb ppb pph/Fe ppb Ppb ppb ppt esc /ce pc/cc ppb ppb F111 ppb OTilF.R TANK 141 mlSTUNE DR AIN i DkAid I.A.NE .l a l _ e__

HOIS1UNE DRAIN TatfE.1C1_ --

tull5TUkt DRAIN IA!!L.lC2 --

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i Table 7 Corre.a Actions for Out of Specification Conditions in Secondary Systems:

Parameter Out of Sample Point Specification Corrective Action Steam Generator S/G All Parameters Increase S/G blowdown, deter-Blowdown (A-D) (except pH low) mine that all Feedwater para-meters are in specification.

pH (low) Determine Feedwater pH and add ammonia (Conventional Chemical Addition (YA)-Stcam Generator) as necessary. Verify correct hydrazine feed.

Feedwater pH (low) Add armonia (YA-Condensate) .

Verify correct hydrazine feed.

pH (high) Terminate ammonia feed to Con-densate System. Alter Conden-sate Polisher (C/P) precoat with hydrogen form overlay.,

Verify correct hydrazine feed.

Cation Conductivity Determine C/P conductivity (Acid Conductivity) differential. Adjust resin C1, F , Silica (SiO ) rati fr ni n rem val as 2

requested. Identify source using other sample points as necessary.

O,~ Determine adequate hydrazine residual. Contact Control Room and check vacuum.

Identify source if possible using other sample points and analytical techniques.

Copper (Cu +) Sample stator coolers and hydrogen coolers locally at isolated drains, etc. Moni-tor pH and 0 in Hotwell Pump 2

Discharge.

Sodium (Na+) Determine C/P dicferential.

Adjust precoat as necessary.

Identify source using other sample points and analytical techniques.

Hydrazine Chemical addition or termina-tion (YA-Condensate).

Suspended Solids Determine ability of C/P to remove solids. Adj ust pre-coats with resin overlays as necessary. See Oxygen above.

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Parameter Out of Sample Point Specification Corrective Action Feedwater (cont'd) Iron (Fe++) Assure pH is maintained at high and of specification.

Adjust C/P resin ratios as necessary.

Cross S & y, Determine leakrate, optimize Iodine-131 use of C/P, evaluate radwaste capacity, and determine source.

G & C Heater Drains pH, Cation Conduc- Maintain feedwater specifica-tivit 9 2 tions, determine source using Cu++ y, 0 , SiO , Na+

~

• additional sample points and various analytical techniques, request that drains be routed to condenser.

C/P Effluent Cation Conductivity, Determine cell differential, Sus remove cell from service and Na+, pended C l-Solids, precoat or overlay as neces-sary. Operating Procedure for C/P defines properties of various precoat resin ratios and criteria for use.

Hotwell Pump Discharge pH Initiate or terminate chemical addition as necessary.

02 Check with Control Room to determine vacuum. Request that Hotwell pumps be cycled.

Check for condenser inleakage.

Adjust hydrazine feed as nec-essary. Sample condenser water boxes and request isolation as necessary.

+ -

Na , C1 , SiO 2

Sample water boxes fo~r condenser inleakage and request isolation as necessary. Note C/P differen-tials and precoat or overlay resins as necessary.

Fe++ Determine that Hotwell oxygen and pH are in specification. Analyze makup water and Upper Surge Tank for iron.

Gross S & y, Determine leakrate, optimize use Iodine-131 of C/P, evaluate Radwaste capacity, and determine source.

Condensate Storage pH, SiO Specific Request increase in flow rate 2

Tank Conductance through tank. Drain Tank.

13ll ,

, n*,

Parameter Out of Sr. cole Point Specification Corrective Action Moisture Separator pH Determine Main Steam and Feed-water pE. Adjust Chemistry as necessary by initiation or termination of chetical feed.

Request that drains be routed to the condenser.

Na+ Increase blowdown on S/G's,

'etermine C/P dif ferential.

++

Cu Determine pH, sample the var-ious drain tanks zationofhighCu{grlocali-concentra-tion and high pH.

Main Steam pH Initiate or terminate chemical addition as required.

Na+ Determine Feedwater sad blow-down sodium. Increase blow-down. Determine C/P differ-ential for sodium and adjust precoats or resin overlays as necessary.

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