4

/ig

DUKE POWER COdiPANYPowra ButtotNo

422 Socra Cacacu Srazzr. Cruar.orTz. N. C. asa-se.

w w u. o....aca.sa. June 19, 1980ViCg Poggit,gast 'ggg e=0mg: An ta 7C 4

sega Peoovenon 373-4:s3

Mr. Harold R. Denton, DirectorOffice of Nuclear Reactor RegulationU. S. Nuclear Regulatory CommissionWashington, D. C. 20555

Attention: Mr. B. J. Youngblood, ChiefLicensing Projects Branch No. 1

Jwh -.

c. / 4Subject: McGuire Nuclear Station {g

Secondary Water Chemistry Monitoringand Control

Dear Mr. Denton:

Please find attached supplemental information on the McGuire N. clear Station

program to monitor and control secondary water chemist;ry. This informationsupplements my letters' of October 25, 1979 and May 23,- 1980 on this subject.Specifically, the information provides updated pages on Table 1 and Table 2of my October 25, 1979 letter. In additioni Table 8 thru Table 12 is pro-vided to describe other procedures and administrative controls involved in'the secondary water chemistry program.

I; statU 'in my October 25, 1979 letter, due to the continuing evolution ofchemistry control technology the procedures and administrative controldescribed in this program are subject to modification. Any modifications

_

will be designed in accordance with the operating experience of McGuireNuclear Station as well as new developements of technology. It should beemphasized that certain administrative limits specified iti the secondarywater chemistry program are goals we will be striving to attain. A betterunderstanding of system capability will be obtained during the first yearof operation.

Very truly yours,

.dt'bY $ /$ -

, u r.

William O. Parker, Jr. 7/7,

o07LJB:ses AAttachment .

)'r

THIS DOCUMENT CONTAiNS///

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.

Note: It should be cmphasized that these are goals.we will be striving to attain.. A better understanding of actual specific system capabilities will be obtained

~during the first year of operation.

TABLE 8 .

r.or In . e i.R.4

At1HINISTRATIVE CtllDFl.lNFS 81Ht I.ltilTIth: OrFitATloN ' I"R' I 'I dFF.FJNAlt at SYSIFil

{#9' ~

rRForERATIONAI, ~ Cl.FANUp Nt1Rit'Ai.'

-b

j*r* CliFillCAI. NC SYS1tM IH: SYSI Fil opfRATinN ~JRANSil.Nr CONDITIONS LINITilsc OrFRATION TotpAPN.E1ER < 100"F > 100"F (Noje,1) JHeg e_2)_ _ iDU Ide~ ~ ' < 24 has < 2 has<

8.7-8.8 8.6-8.7 4.5-8.6pil 8.8-9.6 R . 8-9. 2 8.n-9.2 9,2-9.1 9.3 9.4 9.4-9.5

Cat Cond < 0.5 puhn < 0. 5 a.mtwo 0. 2 in=hn 0. 2-0. 5 senho 0. 5- 8.0 podio > l .0 peduie

Diannived Oy(Note 4) < 100 pph < 5 prh < 5 pyl. 5-25 reh 25,100 poh 100 pple>

10 pet. 20-40 pph 40-60 pple20 pph < 20 pph > 60 pehSlog < <

Ha' l . 5 pg;h 2.5-1.5 pph 1.5-6.0 pph > 6.0 pph'$ pph <5 pph< <

(2.5 Hnte 1)-

18 8' % l-2 ppm 75-150 pph 1 u Do 1 a ist ) m DO2

< 10 pph 10-25 ppb 25-50 pph $0 ppb10 pphSS < 10 pph ><

Fe. < 10 pph < 10 pg h c.10 pph 10-25 pph 25-50 ppb > 50 pph

5 pph < 1 pph F 5 pph 5-10 pph > 10 rphCu e 5 pph <.

l pt.h I-2 pph 2-3 pph * 5 pphI ppl. < I pphph e <

Note It",These parametern apply an inna no the entiu of Ha enntentration in tlie S/C Rinwdowns is < 2 timenethe fee.1 rnneentratinn.

Note 2 1hese paramet es a apply any time t he Na enneentration in t he S/0 mienadowns exceeJa 2 times the'

feedwater concentration.

Note it if Hs' concent rat inn enrecilg 1.5 pph, all evallable enraertive actiong nhaniel I.e used to preventesecc.fing 2.5 pph, nn.1 senture Na in < l.5 pph, a

Note 4: liiege limita apply to the Hutwell. If Dinsolve.1 Oryr,en > 5 pph, inerenne N H2 concentration to2

I timen the Do concentratInn..

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.

CALIBRATION OF MCGUIRE NUCLEAR STATION'SPROCESS ANALYTICAL INSTRUMENTATIONe

. SECONDARY CHEMISTRY><

-pH Meters: Calibrated daily using a minimum of two'

different. purchased buffers, ACS ReagentGrade. Normally pH's of '7 and 9, 10, or |11 are checked.

Conductivity . Calibrated monthly by cross verifying theMeters: reading to a Balabaugh meter. The Balaburgh

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meter is. checked using selected potassium I

chloride solutions to verify probe response,and checked electronically by our instrument-group.

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' Dissolved Calibrated _ fully weekly (membrane changed,Oxygen Analyzers: electrolyte changed, and air calibration),-

checked for accuracy daily using the indigocarmine. method (in addition, chemets aresometimes used).

1Hydrazine Analyzers: Currently-calibrated daily by cross verifyingthe reading using a manual determination. This.may be relaxed to weekly in the future if resultsindicate this is feasible., Also see Note 1.

ISilica Analyzer: Standardized daily using prepared standards ofknown-composition. ACS Reagent Grade chemicalsare used.

Soditafinalyzers: Standardized daily using standards prepared andverified'using a flameless Atomic Absorption tech-nique. See Note 1.-

If, in the future,'the current calibration frequencies of these instruments arefound to be excessive,-the frequency may be changed. however, it is highlydoubtful' of - the frequency would be _less than weekly (except conductivity as'these~2 nits are extremely. stable). No instrument will hold calibration indefini-tely and we feel that accurate data is'an absolute necessity, regardless of howmany hoursLare required to calibrate these instruments.

NOTE 1: The.Q. Sum, technique is used to insure accuracy of.these manual deter-.minations. This technique requires that at:least 20 duplicate sets ofsamples be analyzed under optimum conditions. This data is then usedto. determine the standard deviation for both accuracy and precision of '

the method ~with a 95%. confidence-level. Graphs are.then prepared andeach day the method is~used, the deviation of both accuracy and preci-

.sion ar,e plotted. If a positive-slope change occurs'outside.of~the 95%. confidence limits, sample data is rejected and all_ samples are-

' reanalyzed. :In addition,'at.least one standard must be analyzed with,

-eachysubsequent sample that day and that one standard must fall within~

=theJstandard deviation of the method. _This insures that not only all~

reagents used react as: required.Ebut also verifies instrumentation-. operation and thefanalytical technique of the technician.

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