ML19275A261

Proposed Secondary Water Chemistry Monitoring Programs

ML19275A261
Person / Time
Site:	Byron, Braidwood
Issue date:	09/28/1979
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML19275A258	List: ML19275A257 ML19275A261
References
NUDOCS 7910030420
Download: ML19275A261 (22)

Text

ATTACHMENT 1 BYRON STATION UNITS 1 AND 2 PROPOSED SECONP'RY WATER CHEMISTRY MONITORING PROGRAM NRC DOCKET NOS. 50-454 AND 50-455 7 91003 09'AO h

BYRON PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROCRAM 1.

Identification of a sampling schedule for the critical parameters and of control points for these parameters; Tables 1-7 identify the sampling frequency and control pointe or secondary system critical parameters.

TABLE #1 Steam Generator Chemistry For Cold Hydro < 200*F/ Cold Wet layup / *1 Critical Parameter Sample Frequency Control Point ph 0 25 C 1/ week 10.0 - 10.5 Free Hydroxide as 1/ week ND ppm CACO3 Chloride, ppm 1/ week 0.5 Ammonia, ppm 1/ week As pil requires

• 2 flydrazine, ppm 1/ week 75-105 Dissovled Oxygen, ppb 1/ week 100

• 1.

Condensate quality makeup water shall be used exclusivley in achieving these conditions.

• 2.

During cold Hydro, some decomposition of hydrazine is anticipated; suf ficient hydrazine should be added with the makeup to re-establish the Cold Wet Layup conditions at completion of the test.

TABLE #2 Steam Generator Chemistry For Hot Functional Tests and Hot Shutdown Conditions *1 Tempe ratures > 200*F < 350*F *4 Critical Parameter Sample Frequency Control Point pH @ 25*C Daily 8.5 - 10.0 Free Hydroxide as Daily 0.15 ppm CACO3

• 3 Cation Condugtivity Daily 7.0 umhos/cm @25 C

• 1.

Feedwater (Auxiliary Feedwater) shall be of condensate makeup quality to which ammonium hydroxide and hydrazine are added at the inlet into the steam generator for pH and dissolved oxygen control.

• 2.

Departure from the normal 8.5-9.0 pH range allows for increased NH 3

resulting from decomposition of hydrazine used for steam generator system layup.

• 3.

During startups, up to 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> from initiation of plant loading, additional latitude from normal operatica specifications is provided because increased levels of contaminants are anticipated.

• 4 Table #2 is designed to cover Hot Shur '7wn chemistry conditions during system heat up.

,b 2

TABLE #3 Steam Generator Chemistry For Hot Shutdown / Hot Standby Tempe ratures > 200*F Critical Parameter Sample Frequency Control Point pH @ 25'c Daily 8.5 - 9.0 Free Hydroxide as Daily 0.15 ppm CACO3 Cation Conductivity Daily 2.0 umhos/cm @25'C

• 1 Table #3 is designed to cover Hot Shutdown, Hot Standby conditions during system cool down.

If the unit is to proceed to cold wet lay up, follow the chemistry requirements given in Table #1.

TABLE #4 Steam Generator Chemistry For Startup From Hot Standby Critical Parameter Sample Frequency Control Point

• 1 pH @ 25 C Daily 8.5 - 10.0 Free Hydroxide as Daily 0.15 ppm CACO3

• 2 Cation Conductivity Daily 7.0 umhos/cm @ 25 C

• 1.

Departure from the normal 8.5 - 9.0 pH range allows for increased NH resulting from decomposition of hydrazine used for feedwater system }ayup.

• 2.

During startups, up to 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> from the initiation of plant loading, additional latitude from normal operating specifications is provided because increased levels of contaminants are anticipated.

NOTE:

During startup, chemical impurities will be controlled by s team generator blowdown.

TABLE #5 Steam Generator Chemistry For Normal Power Operations *1 Critical Parame ter Sample Frequency Control Point pH @ 25 C Daily 8.5 - 9.0 Free Hydroxide as Daily 0.15 ppm CACO3 Cation Conductivity Daily 2.0 umho/cm @ 25 C

• 1 During normal power operations, chemical impurities will be cont'.olled by steam generator blowdown.

TABLE #6 Feedwater Chemistry 1or Startup From Hot Standby Critical Parameter Sample Frequency Contral Point

• I pH @ 25 C Daily 8.8 - 10.0

• 2 Hydrazine, ppm Daily 02 + 0.005 Dissolved Oxygen, ppb Daily 100 TABLE #7 Feedwater Chemistry For Normal Power Operation Critical Parame ter Sample Frequency Control Point pH 0 25 C Daily 8.8 - 9.2 Hydrazine, ppm Daily 02 + 0.005 Dissolved Oxygen, ppb Daily 5

• 1.

Departure from the normal 8.8 - 9.2 pH range allows for increased NH resulting f rom decomposition of hydrazine used for feedwater 3

system layup.

• 2 Hydrazine level should exceed the oxygen level by 5 ppb.

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9 BYRON PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROCRAM 2.

Identification of the procedures used to measure the value of the critical parameters; The following is a list of the procedures which will be used to measure the critical parameters stated in Question One.

Byron Procedure Name Number Determination of Dissolved Oxygen BCP 100-1 Determination of Chloride, by Titration BCP 100-5 Determination of Hydrazine BCP 110-4 Determination of pH BCP 120-2 Determination of Free Hydroxide BCP 120-4 De termination of Ammonia, by electrode BCP 120-5 Determination of Cation Conductivit:'

BCP 150-2 i

t 6

BYRON PROPOSED SECONDARY WATER CllEMISTRY MONITORING PROGRAM 3.

Identification of process sampling points; The steam generator sample points are located in the steam generator sample panel (# OPS 01J) which is located in the hot lab.

The sample panel is common to both units and consists of individual sample points for each of the four steam generators plus in-line detection capability for measuring pH, cation conductivity and sodium.

The main feedwater sample points are located in sample panels

(# IPS06J and 2PS06J) which are located in the secondary system sample rooms.

Each sample panel has in-line detection capability for measaring pH, Specific Conductivity, hydrazine, dissolved oxygen, and turbidity.

In addition, grab samples may be taken at each panel for analysis in she laboratory.

)

i

BYRON PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 4.

Procedu re for the recording and management of data; The recording and managemen: of chemistry data will be as follows:

A.

The chemistry parameters identified in question one, Table #1, will be recordeJ veekly on the secoadary system analysis work sheets.

The chemistry parameters identified in question one, Tables #2 thru #7, will be recorded daily, on the secondary system analysis work sheets.

B.

The Chemistry Department personnel will review all chemistry results daily. Out of spec items will be 16'atified and corrective action taken as per question five.

C.

Daily results will be recorded on a Secondary System Data Form. This form will contain the chemistry rcaultu of the steam generators, feedwater, condensate and condensate storage tanks. Additional information will include per cent power and steam generator blowdown rates.

D.

The following criticc! oarameters will be plotted on a daily basis; For Steam Cen.fators 1.

pH 2.

Free Hyd roxide 3.

Cation Conductivitty For Feedwater 1.

pH 2.

Hydrazine 3.

Dissolved oxygen

,b

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BYRON PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 5.

Procedures defining corrective actions for off-control point chemistry conditions; At this time abnormal chemistry operating procedures have not been written. Therefore, procedure numbers governing corrective action cannot be listed. However, is is felt that a program which provides for cation conductivity control will also satisfy the requirements for out of spec free hydroxide and high pH conditions.

The philosopy behind Byron station's of f - control point Chemistry will be as follows; a.

When cation conductivity exceeds 2.0 umhos but is less than 7 umhos reduce load to less than 50%.

b.

When cation conductivity exceed 7.0 umhos proceed to hot

shutdown, c.

If the source of the high cation conductivity is located and isolated, unit operation at 50% pcwer or less may continue for a maximum of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, provided cation conductivity does not exceed 7 umhos.

If at the end of the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> period, the trena of the cation conductivity is decreasing, the unit may continue operations at or below 50% power.

If there is no improvement, the unit must proceed to Hot Shutdown.

Since cation conductivity is the most sensitive analysis for determining condenser tube leaks, we feel this procedure also satisfies the requirements for out of spec f ree hydroxide and high pH concentrations.

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J 9

BYRON PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 6.

A procedure identifying (a) the authority responsible for the interpretation of the data and (b) the sequence and timing of administrative events required to initiate corrective action; A.

The authority responsible for interpretation of data will be as follows:

1.

A chemist is responsible for interpreting and recommending corrective action on any out of spec chemistry condition.

2.

In the absence of the chemist, the Station Chemist will assmae the responsibility of data interpretation and corrective action.

3.

In the absence of both the Chemist and the Station Chemist, the Radiation Chemistry Supervisor is responsible for data interpretation and corrective action.

B.

The sequence and timing of administrative events required to initiate corrective action will be as follows; 1.

The Radiation Chemistry Technician analyzing the sample is responsible for reporting any out of spec chemistry condition to his or her immediate supervisor. On day shift, this will be the Radiation Chemistry Foreman, on backshif ts, this will be the Shift Engineer.

2.

Af ter being informed of an out of spec condition the Radiation Chemistry Foreman or the Shif t Engineer will notify the appropriate Chemist.

If the Chemist is unavailable, the Station Chemist will be notified.

If both the Chemist and Station Chemist are unavailable, the Radiation Chemistry Supervisor will be notified.

3.

Once notified, Chemistry Department personnel will evaluate the situation and make appropriate recommendations for corrective action to the Shift Engineer.

4.

The above sequence of events should be intiated within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from the time the sample is reported out of spec.

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10

ATTACFMENT 2 BRAIDWOOD STATION UNITS 1 AND 2 PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM NRC DOCKET NOS. 50-456 AND 50-457 11.3 200

BRAIDWOOD PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 1.

Identification of a sampling schedule for the critical parameters and of control points for these parameters; Tables 1 7 identify the sampling frequency and control points for secondary system critical parameters.

TABLE #1 Steam Generator Chemistry For Cold Hydro / Cold Wet Layup/*1 Temperature < 200*F Critical Parameter Sample Frequency Control Point ph @ 25 C 1/ week 10.0 - 10.5 Free Hydroxide as 1/ week ND ppm CACO 3 Chloride, ppm 1/ week 0.5 Ammonia, ppm 1/ week As p!! requires Hydrazine, ppm 1/ week 75-105 Dissovled Oxygen, ppb 1/ week 100

• l.

Condensate quality makeup water shall be used exclusivley in achieving these condi %ns.

• 2.

During cold Hydro, some decomposition of hydrazine is anticipated; sufficient hydrazine should be added with the makeup to re-establish the Cold Wet Layup conditions at completion of the test.

)

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1. !J

(

l

TABLE #2 Steam Generator Chemistry For Hot Functional Tests and Hot Shutdown Conditions *1 Tempe ratures > 200*F < 350*F *4 Critical Parameter Sample Frequency Control Point

• 2 pt: @ 25'C Daily 8.5 - 10.0 Free Hydroxide as Daily 0.15 ppm CACO 3

• 3 Cation Conductivity Daily 7.0 umhos/cm 025 C

• l.

Feedwater (Auxiliary Feedwater) shall be of condensate makeup quality to which ammonium hydroxide and hydrazine are added at the inlet into the steam generator for pH and dissolved oxygen control.

• . Departure from the normal 8.5-9.0 pH range allows for increased NH3 resulting from decomposition of hydrazine used for steam generator system layup.

• 3.

During startups, up to 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> f rom initiation of plant loading, additional latitude from normal operation specifications is provided because increased levels of contaninants are anticipated.

• 4.

Table #2 is designed to cover Hot Shutdown chemistry conditions during system heat up.

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2

TABLE #3 Steam Generator Chemistry For flot Shutdown / Hot Standby Temperatures > 200*F

_ Critical Parameter Sample Frequency Control Point pH @ 25'C Daily 8.5 - 9.0 Free liydroxide as Daily 0.15 ppm CACO3 Cation Conductivity Daily 2.0 umhos/cm @25'c

• 1 Table #3 is designed to cover Hot Shutdown, Hot Standby conditions during system cool down.

If the unit is to proceed to cold wet lay up, follow the chemistry requirements given in Table #1.

TABLE #4 Steam Generator Chemistry For Startup From Hot Standby Critical Parameter Sample Frequency Control Point pH @ 25 C Daily 8.5 - 10.0 Free Hydroxide as Daily 0.15 ppm CACO3

• 2 C. tion Conductivity Daily 7.0 umhos/cm @ 25 C

• l.

Departure from the normal 8.5 - 9.0 pli range allows for increased NH resulting from decomposition of hydrazine used for feedwater system }ayup.

• 2.

During startups, up to 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> from the initiation of plant loading, additional latitude from normal operating specifications is provided because increased levels of contaminants are anticipated.

NOTE:

During startup, chemical impurities will be controlled by steam generator blowdown.

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TABLE #5 Stnam Generator Chemistry For Normal Power Operations *1 Critical Parameter Sample Frequency Control Point pH @ 25 C Daily 8.5 - 9.0 Free Hydroxide as Dailu 0.15 ppm CACO 3

Cation Conductivity Daily 2.0 umho/cm @ 25 C

• 1 During normal power operations, chemical impurities will be controlled by steam generator blowdown.

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4

TABLE #6 Feedwater Chemistry For Startup From Hot Standby

-Critical Pa rame ter Sample Frequency Control Point pH @ 25 C Daily 8.8 - 10.0 Hydrazine, ppm Daily 02 + 0.005 Dissolved Oxygen, ppb Daily 100 TABLE #7 Feedwater Chemistry For Normal Power Operation Critical Parame ter Sample Frequency Control Point pH @ 25 C Daily 8.8 - 9.2 Hydrazine, ppm Daily 02 + 0.005 Dissolved Oxygen, ppb Daily 5

• l.

Departure from the normal 8.8 - 9.2 pH range allows for increased Nil resulting from decomposition of hydrazine used for feedwater 3

system layup.

• 2.

Hydrazine level should exceed the oxygen level by 5 ppb.

h 5

BRAIDWOOD PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 2.

Identification of the procedures used to measure the value of the critical parameters; The following is a list of the procedures which will be used to measure the critical parameters stated in Question One.

Braidwood Procedure Name Number Determination of Dissolved Oxygen BrCP 100-1 Determination of Chloride, by Titration BrCP 100-5 Determination of Hydrazine BrCP 110-4 Determination of pH BrCP 120-2 Determination of Free Hydroxide BrCP 120-4 Determination of Ammonia, by electrode BrCP 120-5 Determination of Cation Conductivity BrCP 150-2 i

3 91' 4 o Lv 6

BRAIDWOOD PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 3.

Identification of process sampling points; The steam generator sample points are located in the steam generator sample panel (# OPS 0lJ) which is located in the hot lab.

The sample panel is common to both units and consists of individual sample points for each of the four steam generators plus in-line detection capability for measuring pH, cation conductivity and sodium.

The main feedwater sample points are located in sample panels

(# IPS06J and 2PS06J) which are located in the secondary system sample room.

Eac;. ample panel has in-line detection capability for measuring pH, Specific Conductivity, hydrazine, dissolved oxygen, and turbidity.

In addition, grab samples may be taken at each panel for analysis in the laboratory.

1 C. 3 2 0'I 7

BRAIDWOOD PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 4.

Procedure for the recording and management of data; The recording and management of chemistry data will be as follows:

A.

The chemistry parameters identified in question one, Table #1, will be recorded weekly on the secondary syst.em analysis work sheets.

The chemistry parameters identified in question one, Tables #2 thru 7, will be recorded daily, on the secondary system analysis work sheets.

B.

Chemistry Department personnel will review all chemistry results daily.

Out of spec items will be identified and corrective action taken as per question five.

C.

Daily results will be recorded on a Secondary System Data Form. This form will contain the chemistry results of the steam gcaerators, feedwater, condensate and condensate storage tanks. Additional information will include per cent power and steam generator blowdown rates.

D.

The following critical parameters will be plotted on a daily basis; For Steam Generators 1.

pH 2.

Free Hydroxide 3.

Cation Conductivitiy For Feedwater 1.

pH 2.

Hydrazine 3.

Dissolved Oxygen

]

8

BRAIDWOOD PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 5.

Procedures defining corrective actions for off-control point chemistry condi t ions ;

At this time abnormal chemistry operating procedures have not been written. Therefore, procedure numbers governing corrective action canne.

be listed. However, is is felt that a program which provides for cat iot:

conductivity control will also satisfy the requirements for out of spec free hydroxide and high pH conditions.

The philcsopy behind Braidwood stations of f - control point Chemistry sill be as follows; a.

When cation conductivity exceeds 2.0 umhos but is less than 7 umhos reduce load to less than 50%.

b.

When cation conductivity exceed 7.0 umhos proceed to hot shutdown.

If the source of the high cation conductivity is located and c.

isolated, unit operation at 50% pover or less may continue for a maximum of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, provided cation conductivity does not exceed 7 umhos.

If at the end of the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> period, the trend of the cation conductivity is decreasing, the unit may continue operations at or below 50% power.

If there is no improvement, the unit mus t proceed to Hot Shutdown.

Since cation conductivity is the most sensitive analysis for determining condenser tube leaks, we feel this procedure also satisfies the requirements for out of spec free hydroxide and high pH concentrations.

,b 9

BRAIDWOOD PROPOSED SECONDARY WATER CHEMISTRY MONITORING PROGRAM 6.

A procedure identifying (a) the authority responsible for the interpretation of the data and (b) the sequence and timicg of administrative events required to initiate corrective action; A.

The authority responsible for interpretation of data will be as follows:

1.

A Chemist, for each respective unit, is responsible for interpreting and recommending corrective action on any out of spec chemistry condition.

2.

In the absence of the Chemist, the Station Chemist will assume the responsibility of data interpretation and corrective action.

3.

In the absence of both the Chemist and the Station Chemist, the Radiation Chemistry Supervisor is responsible for data interpretation and corrective action.

B.

The sequence and timing of administrative events required to initiate corrective action will be as follows; 1.

The Radiation Chemistry Technician analyzing the sample is respon_ible for reporting any out of spec chemistry condition to his or her immcdiate supervisor. On day shift, this will be the Radiation Chemistry Foreman, on backshif ts, this will be the Shift Engineer.

2.

Af ter being informed of an out of spec condition the Radiation Chemistry Foreman or the Shift Engineer will notify the appropriate chemist.

If the Chemist is unavailable, the Station Chemist will be notified.

If both the Chemist and Station Chemist are unavailable, the Radiation Chemistry Supervisor will be notified.

3.

Once notified, chemistry department personnel will evaluate the situation and make appropriate recommendations for corrective action to the Shift Engineer.

4.

The above sequence of events should be intiated within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from the time the sample is reported out of spec.

1,".37)O PC/at/M9/D 10