ML17297A674

Forwards Clarification to Original Response to Question 282.2 Re Secondary Water Chemistry Discussed in NRC .Clarification Will Be Included in Future FSAR Amend

ML17297A674
Person / Time
Site:	Palo Verde
Issue date:	08/06/1981
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Tedesco R Office of Nuclear Reactor Regulation
References
ANPP-18599-JMA, NUDOCS 8108180370
Download: ML17297A674 (10)

Text

REGULATO Y

INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8108180370, DOC ~ OATEN'! 81/08/06 NOTARIZED'O FACILt:STN 50 528 Palo Verde Nuclear'tation'r Un) t 1R Ar)zona Publ i STN-50-529 Palo Ve'rde Nuclear StationF Un) t 2r Arizona Publi STN 50 530 Palo Ver de. Nuclear Stationi Unit 3g Arizona Publ i AUTH';NAME)

AUTHOR AFFILIATION VAN BRUNT F E" E ~

Ari zona Pub l i c. Ser vi ceI Co ~

RECIP ~ NAMEl RECIPIENT AFFILIATION TEDESCOrR ~ L'o Assistant DirectorT for Licensin9 05000529 05000530'UBJECTS'or wards clarification< to orig,inal response to Question 282",2'e. secondary water chemistry discussed in NRC 810717 ltd Clarification wi11 be included in future FSAR amend, DISTRIBUTION CODE,:

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'HOENIX'RIZONA85036 August 6, 1981 ANPP-18599 - JMA/WFg Mr. R.,L. Tedesco Assistant Director for Licensing Division of L'icensing U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

Palo Verde Nuclear Generating Station (PVNGS) Units 1, 2 and 3

Docket-Nos. STN-50-528/529/530

, '"File '"81-"056-"026;'6:1.0

-'-'eference::

Letter from R. L. Tedesco, NRC,'o E.

E.

Van Brunt, July 17, 1981,

Subject:

Secondary Water Chemistry (NRC guestion 282.2)

Dear Mr. Tedesco:

Attached are clarifications to our original response to parts 2.5 and 6 of NRC question 282.2 as requested by Ms. Kerrigan and Mr. Turvolin (CEB) of the NRC staff.

Clarification regarding Part 1 of guestion 282.2 (i.e., revision of CESSAR-F Table 10.3.4-1 will be handled on the CESSAR-F docket.

Our clarifications are shown as marked up copies of existing PVNGS FSAR pages and will be included in a future FSAR Amendment.

Very truly yours, 4.<.Vw APS Vice President Nucl ear Projects ANPP Project Director EEVBJR/WFg/md Attachment cc:

J. Kerrigan (w/a)

B.. Turvolin NRC (CEB) (w/a)

P. Hourihan (w/a)

A. Gehr (w/a) g(Pl r

8108180370 8i0806 PDR ADOCK 05000528 A

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PUNGS FSAR

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APPENDIX-10A 2.

Procedures for measuring the values of critical parameters will reflect CE technical recommendations or exceptions will be technically justified in sec-tion 10. 3. 5. ~

i%5eP7 3.

Process sampling points are. listed in section 10.4.6.2.3.

Recording and management of secondary water chemistry data will be covered by administrative procedures.

These procedures will include the.following requirements:

(a)

The composition, quantities, and.addition rates of additives shall be recorded initially and thereafter

'whenever a change is made.

(b)

The electrical conductivity and the pH of the bulk steam'enerator water and feedwater shall be measured continuously (with provision for alternate sampling methods in case of equipment failure).

(c)

Free hydroxide concentration and impurities (particularly chloride, ammonia and silica) in the'steam generator water shall be measured at least three times per w'eek.

(d)

The electrical conductivity and sodium ion concentr'ation of the condensate is measured continuously.

Procedures will require prompt corrective action for out of specification. or off control point secondary water chemistry conditions.'f the normal chemistry. limits given in CE55AR P

Tables 10.3.4-1 or 10.3.4-2 cannot be maintained

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because of condenser

leaks, prompt repair..of these.

'leaks wil'1 be reguired~~ieSes 7 Hay 1981

.10A-15 Amendment 4

Insert A Page 10A-15 The following industry procedures reflect, the most recent CE technical recommendations for measuring the respective parameters.

Parameter Procedure ph ASTM, Part 31, Procedure

D1293, Method B

Conductivity ASTM,- Part 31, Procedure

D1125, Method B

Suspended Solids Standard

Methods, Procedure 208D or ASTM, Fart 31, Procedure D1888 Silica ASTM,'Part 31, D859, Method B

Insert B Page 10A-15 For those parameters of Table 10.3.4-1, the samples are taken from the

'team generator blowdown and for Table 10.3.4-2, the samples are taken at the condenser outlet/condensate pump discharge and the high pressure feedwater heater-number seven outlet.

If measured values exceed the normal limits of tables'10.3.4-1.

or 10.3.4-2, corrective action will be initiated immediately.

If the condition 'causing the above normal values cannot be identified and/or controlled, and measured values exceed the abnormal limits, steps shall be taken to reduce measured values below abnormal limits or the plant shall be shut down within four hours.

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PVNGS FSAR 6.

APPENDIX 10A=-

An administrative procedure will specify responsi-bilities for interpretation of secondary water chemistry data, initiation of corrective action, maintaining secondary water chemistry conditions within specifications, and taking such action as is needed to correct out of specification or off control point conditions.

The. Chemistry Section staff is responsible for reviewing and analyzing data and provides technical advice to the Shift Supervisor on water chemistry matter~s. P'rocedures will provide g~idn.'7 d

guidance for correcting out of specification and off control point conditions and will require p'rompt action to. correct out of specification, conditions.

Procedures for secondary water chemistry contxol and monitoring will be available on site for NRC review 60 days prior to filling the secondary side of a steam generator.

The steam'enerator secondary water chemistry control program is described in section 10.3.5.1 which refer-ences

.CESSAR Section 10.3..4.1, which reflects CE's technical recommendations.

Technical recommendations are met by the existing design.

Theie are no signifi-cant deviations from NSSS steam generator chemistry recommendations.

Section 10.4.6.2.3 describes the method of continu-ously monitoring for indication of condenser

leaks, which's to c'ontinuously monito'r each section o'f the condenser hotwell, instead of monitoring condenser pump discharge.

4) amendment 4

10A-16 May 1981

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4 Insert C:

The Shift Supervisor, is responsible for initiating corrective action for out-of-specification chemical parameters.

During off-normal hours, the Shift Supervisor is advised in these corrective actions by the Shift Chemistry Technician.

During normal.hours, the Unit Supervising Chemist is responsible for recommending corrective actions for out-of-specification chemical parameters.,

Chemistry data sheets and reports are reviewed on a routine basis by the Unit Supervising Chemist and periodically by the Chemistry Supervisor.

10A-16

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