ML17342A812

Requests Completion of Encl Questionnaire Re Erosion/ Corrosion in Feedwater Pipes in PWR Plants.Water Chemistry Survey Being Conducted in Response to Surry Dec 1986 Pipe Corrosion Incident.Response Requested within 60 Days

ML17342A812
Person / Time
Site:	Turkey Point
Issue date:	07/20/1987
From:	Mcdonald D Office of Nuclear Reactor Regulation
To:	Woody C FLORIDA POWER & LIGHT CO.
References
NUDOCS 8707300365
Download: ML17342A812 (9)

Text

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July 20 1987 Docket Nos. 50-250 and 50-251 Mr. C. 0.

Woody Group Vice President Nuclear Energy Florida Power and Light Company Post Office Box 14000 Juno Beach, Florida 33408

SUBJECT:

WATER CHEMISTRY SURVEY DISTRIBUTION

.-Docket File~

NRC 8 Local PDRS PD22 Rdg SVarga GLainas DMcDonald DMil le r QGC-Bethesda EJordan JPar tlow RWright ACRS (10)

Grey File As a result of the Surry pipe erosion/corrosion incident in December of 1986, the NRC is preparing a report that will reference 'existing research information available and describe the actions being taken by utilities regarding erosion/

corrosion in feedwater pipes in nuclear power plants.

Central to an understand-

,ing of erosion/corrosion in pipes is an accurate assessment of erosion/corrison experience, piping design, feedwater and condensate chemistry and piping materials.

To ensure that both the NRC and the nuclear industry have available a

comprehensive collection of data regarding erosion/cor rosion in feedwater pipes, the NRC will assemble a summary of utility information related to ongoing water chemistry actions in pressurized water reactors.

To accomplish this task we ask that you complete the enclosed questionnaire.

The information being requested is quite extensive and will require a diligent effort on your part and ours to assure accurate and timely completion.

Also, we realize that parts of the information may already be available to the NRC, but not in a convenient format which is readily accessible.

Therefore, we request that you assist us by returning for each unit a single completed copy of the enclosed questionnaire to the Project Manager, U. S. Nuclear Regulatory Commission, Washington, D. C.

20555, within 60 days of receipt of this letter.

We would also like to follow-up with a day or half-day site visit to Turkey Point subsequent to your response.

We will provide a proposed

date, desired contacts and the areas of access at a later time.

We believe the questionnaire is self explanatory; however, if questions arise or clarification is required concerning the questionnaire or the future site visit, please contact your NRC Project Manager.

8707300365 870720 PDR ADOCN, 05000250 O'

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Mr. C. 0. Woody 2

This request is covered by Office of Management and Budget Clearance Number 3150-0011 which expires December 31, 1989.

Comments on burden and duplication may be directed to the Office of Management and Budget, Room 3208, New Executive Office Building, Washington, D. C.

20503.

Sincerely,

/s/

Enclosure:

PWR'rosion-Corrosion guestionnaire cc:

See next page Daniel G. McDonald, Project Manager Project Directorate II-2 Division of Reactor Projects-I/II 7/p/87 PM:PD22 DMcDonald 7/90/87 LRubenstein 7/ZO/87

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Mr. C. 0.

Woody Florida Power and Light Company Turkey Point Plant CC:

Harold F. Reis, Esquire Newman and Holtzinger, P.C.

1615 L Street, N.W.

Washington, DC 20036 Mr. Jack Shreve Office of the Public Counsel Room 4, Holland Building Tallahassee, Florida 32304 Norman A. Coll, Esquire

Steel, Hector and Davis 4000 Southeast Financial Center Miami, Flori da 33131-2398 Mr. C. M. Wethy, Vice President Turkey Point Nuclear Plant Florida Power and Light Company P.O.

Box 029100 Miami, Florida 33102 Mr. M. R. Stierheim County Manager of Metropolitan Dade County Miami, Florida 33130 Resident Inspector U.S. Nuclear Regulatory Commission Turkey Point Nuclear Generating Station Post Office Box 57-1185 Miami, Fl or ida 33257-1185 Jacob Daniel Nash Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.

Tallahassee, Florida 32399-0700 Intergovernmental Coordination and Review Office of Planning 8 Budget Executive Office of the Governor The Capitol Building Tallahassee, Florida 32301 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Suite 2900 101 Marietta Street Atlanta, Georgia 30323 Martin H. Hodder, Esquire 1131 NE, 86th Street Miami, Florida 33138 Jnette Lorion 7269 SW, 54 Avenue Miami, Florida 33143 Mr. Chris J. Baker, Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company P.O.

Box 029100 Miami, Florida 33102 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304

PWR EROSlON-CORROSION QUESTIONNA1RE (Check or Circle All Applicable)

Utility Company Florida Power

& Light Co. Unit Name:

Turkey Pt.

3 ENCLOSURE HWe Filled by:

Date:

Phone No.

ln service:

19....

Water Treatment:

AVT with arrrnonia, morpho)inc> hydrazine.

Condensate polishers:

installed 19....;

Cooling water:

fresh, Copper alloy condenser Boric acid used since:

none, cation,

powdex, mixed bed;.....$ of Feedwater flow; operated in: H-OH, NH4-OH form.

salt, brackish, cooling tower.

tubing:

yes, no.

Copper alloy FW heater tubes:

LP, HP, none.

19...; during: operation,

layup, low load soaks, other.......

A.

EROSION-CORROSlON EXPER1ENCE l.

Erosion-Corrosion identified in wet steam piping:

yes.

no.

2.

Erosion-Corrosion of HSR Chevrons or mesh:

yes, no.

Chevron material:

stainless

steel, carbon steel, other.........

3.

Erosion-Corrosion of feedwater piping:

yes, no.

Oate found.......

Feedwater piping materials:.....................................

4.

Erosion-Corrosion of:...,. elbows......

Ts,..... diffusers.

valves,.... oriFices,.... other components (specify)......

5.

Erosion-Corrosion of J-Tubes:

yes, no.

6.

Erosion-Corrosion of feedwater distribution ring: yes, no.

7.

Erosion-Corrosion of turbine:

HP, LP; identify components:

8.. Erosion-Corrosion of other cycle components (identify).............

9.

Feedwater temperature range where erosion-corrosion found:

from...

10.

1nspection frequency for feedwater piping..... years.

Steam lines 11.

1nspection methods used:

ultrasonic thickness, radiography,

visual,

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ars.

ye other..

B.

PIP1NG DES)GN l.

2 ~

3 ~

4 5.

6.

Maximum feedwater flow velocity............

Feet/second.

No.

oF feed pumps operating at 100$ load.......,

second pump On at.....7. load.

Haximum flow velocity when only 1

pump is operating...............

Feet/second.

No. of feedwater piping components:.......

elbows,......

Ts,...... diffusers>

...... reducers....... valves,...... orifices.

...... other components (specify)

Maximum flow velocity in wet steatr piping............

rect/second.

Feedwater pressures and temperatures (actual (preFerred) or design):

Full load ressure sia tern erature

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Con ensate Pump Cond. Polishers BF Pump Steam Generators Low load t ical...

of full load:

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Con nsate Pump Cond. Pollshers BF Pump Steam Generators Please attach co les of the heat balance dia rams for our actual full load and t

ical low load.

C.

FEEDWATER AND CQNDENSATE CHEHISTRY l.

Please complete the attached

Table, 2.

Feedwater chemistry history (average or typ 1 ca I va lues, fina I feedwater ):

Year of oper.:

1st pH of FW maximum minimum average pH oF condensate maximum

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minimum average 00, ppb maximum minimum.

average Cat.

Cond.

uS/cm Spec.

Cond.

uS/cm NH, ppb N~34, ppb Bi5ron, ppb Afr Infeakage, SCFif 1974 1976 1978 1980 1982 l983 198S 1986 1987 Please send an water chemistr sunmar re orts and data.

3.

Chemical additions 3.l 3.2

3.3 Ammonia

typfcal concentration in feedwater '.... ppb; added at........-..

Hydrazine:

typical concentration in feedwater.... ppb; added at.........

Boric acid:

typical concentration in feedwater....

ppb as B;

added at 0

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NATERlALS Feedwater piping - list ASTH or other speciffcation numbers...............

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2.

Wet steam piping:

3.

Attach results of chemical anal sis b

ou or i

e vendors.

70/Ooc4

PWR EROSION-CORROSION QUESTIONNAIRE (Check or Circle AII Applicable)

ENCLOSURE Utility Company:

Unit Name:

Turkey Pt.

4 HWe Filled by:

Date:

Phone No.

ln service:

19....

Water Treatment:

AVT with amnonla, morpholine, hydrazine.

Condensate polishers:

installed 19....;

Cooling water:

fresh, Copper alloy condenser Boric acid used since:

none, cation,

powdex, mixed bed;.....$ of feedwater flow; operated in: H-OH, NH4-OH form.

salt, brackish, cooling tower.

tubing:

yes, no.

Copper alloy FW heater tubes:

LP, HP, none.

19...; during: operation,

layup, low load soaks, other.......

A.

EROSION-CORROSION EXPERIENCE l.

2 ~

3.

4 ~

5.

6.

7.

8.

9.

10.ll.

Erosion-Corrosion identified in wet steam piping:

yes, no.

Erosion-Corrosion of NSR Chevrons or mesh:

yes, no.

Chevron material:

stainless

steel, carbon steel, other.....................

Erosion-Corrosion of feedwater piping:

yes, no.

Date found...................

Feedwater piping materials:

Erosion-Corrosion of:...,. elbows......

Ts,..... diffusers,......: reducers, valves,.... orifices,.... other components {specify)..................

Erosion-Corrosion of J-Tubes:

yes, no.

Erosion-Corrosion of feedwater distribution ring: yes, no.

Erosion-Corrosion of turbine:

HP, LP; identify components:

Erosion-Corrosion of other cycle components (identify)...................

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0 Feedwater temperature range where erosion-corrosion found:

from.... to.....

F inspection frequency for feedwater piping..... years.

Steam lines..... years.

inspection methods used:

ultrasonic thickness, radiography, visual, other......

PlPlNG DESIGN l-2 ~

3.

4 5.

6.

Haximum feedwater flow velocity..........

~. feet/second.

No. of feed pumps operating at l00$ load.......,

second pump On at.....f. load.

Haximum flow velocity when only I pump is operating...............

Feet/second.

No. of feedwater piping components:.......

elbows,......

Ts,...... diffusers,

...... reducers,...... valves,...... orifices,

...... other components (specie.y)..

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Haximum flow velocity in wet steam piping............

Feet/second.

Feedwater pressures and temperatures (actual (preferred) or design):

Full load ressure sia tern erature

~F P

D ~

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Con ensate Pump Cond. Polishers Low load t ical...

of full load BF Pump Steam Generators P

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Con nsate Pump Cond. Pollshers BF P~

Steam Generators Please attach co les of the heat balance dia rams For our actual full load and t

Ica I Iow load.

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FEEOWATER ANO CONOENSATE C

ISTRY 1.

Please complete the attached Table.

2.

Feedwater chemistry history (average or typical values, final feedwater):

Year of oper.:

1st 1974 1976 1978 1980 1982 1983 198S 1986 1987 pH of FW maximum minimum average pH of condensate maximum..

minimum average DO, ppb maximum minimum average Cat.

Cond.

uS/cm Spec.

Cond.

uS/cm NH, ppb HqII4 ~ ppb

Bbron, ppb Air Inleakage, SCFM Please send an water chemistr surrrnar re rts and data.

3.

Chemical additions 3.1 3.2

3.3 Arwnonia

typical concentration in feedwater '....

ppb; added at...........

Hydrazine:

typical concentration in feedwater.... ppb; added at.........

Boric acid:

typical concentration in feedwater....

ppb as 8; added at...

0.

MATERIALS 1.

Feedwater piping list ASTM or other specification numbers....................

2.

Wet steam piping:

3.

Attach results of chemical anal sis b

ou or i

e vendors.

70/Ooc4