ML20236B684

Forwards Completed Questionnaire Re Erosion/Corrosion Experience in Plant Feedwater Lines,Per Dr Muller 870723 Request

ML20236B684
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	10/21/1987
From:	Leblond P COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
3738K, NUDOCS 8710260298
Download: ML20236B684 (5)

Text

. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _

. Osmmonw alth Edison One First National Plaza, Chicago, Illinois

%./

Address Reply to: Post Office Box 767 Chicago, Illinois 60690 0767 USHRC-DS te10C12b A 45C" October 21, 1987 i

e U.S. Nuclear Regulatory Commission Attn: Document Co.1 trol Desk Washington, DC 20555

Subject:

Zion Nuclear Power Station Units 1 & 2 NRC Questionnaire Regarding Feedwater NRC Docket Nos. 50-295 and 50-304

Reference:

July 23, 1987 letter from D.R. Muller to L.D. Butterfield Gentlemen:

The referenced letter provided commonwealth Edison Company with a questionnaire regarding the erosion / corrosion experience in Zion's feedwater lines. The completed questionnaire is enclosed with this submittal.

If any questions arise regarding this information please direct them to this office.

Very truly yours, P. C. LeBlond Nuclear Licensing Administrator cc: Resident Inspector - Zion J. A. Norris - NRR l

3738K h

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w __ m t.

c c

1 O

t ENCt.05URE =-

M' LP'WRLEROSION-CORROSION QUESTIONNAIRE

. (Check or Circle All'.ApplicaDie)

... o

,3 Ohb

..h Utiii y Cbmpany:[ommmeaMN 6A$w -

Unit Name:

ON

.. MWe 9/7A/87 Phone No. ed511 /ed alt. -N 6-2.oO4 -

F i l l e:: Dy: f7.PA ds.L k

. bie L ate:

0

/-

=rf in services.19.7.4.

' Water Treatment:

AVT with anmonia.Teordholine brin Concensate polishers: @ cation, powdex.imixed. bed;.....iLof'feedwater flow; f

instal. led'19....; operated in: H-OH.-NH4-OH form.

al 9?

Cocling water: @ salt. brackish.. cooling tower.

Copper al loy condenser tubing:- Sp. no.~ Copper a t loy FW heater ftubes:M.@ no#

ne..

low load soaks. other..N/d..

i I

Boric' acid used since: 19$.;during:.operatlon'.'layup, A.

EROS 10N-CORROSlON EXPERIENCE 1

1 L

1.

Erosion-Corrosion identified in wet ' steam piping: - @, no.

' I 2.

Erosion-Corrosion of MSR Chevrons or mesh: (fe!b:no.

{l.

l

' Chevron material:

stainless steel._ QTbonjsti$b.

other......................

3.

Erosion-Corrosion of feedwater' piping:

ye s, qg 0at e found :.^..................

]

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

)

4.-

Erosion-Corroston of:..... (eT66"w's..... @..... ~ d i f f us e r s....... : reducers.

.... va1% s..... q;rr'i fTegs)....- other components (specify)'.................

]

Erosion 7 Corrosion'of J-Tubes: @ y no.

i

5.

6.

Erosion-Corrosion'of feedwater distribution ring: yes. @

i I

7.

Erosion-Corrosion of turbine: (3P?L.P; identify componentst..............'...'...

d 8.

Eroston-Corrosion of'other cycle components (identify)=.dP7W.. h......... 6' hl*

9.

Feedwater temperature range where eros tori-corrosion fpund: -from.... to..... F 4

10.. inspect ion frequency for f eedwater p ip i ng... l. years. - Steam l ines :..I...= l years.

11.

Inspection methods used:

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

l; x as cbuk L yoc.9Awee_..

1; B.

PIPING DESIGN l'

Maximum f eedwater f low veloci ty.... h...... f eet/second.

l.

2.

No. of feed pumps operating at 100; toad

....'.E.,

second pu On'at'N.4..% load, i

3.

Maximum flow velocity when only 1 pump i operating......... 4....

feet /second.

elbows.. 10..'Ts...... diffusers.

l, 4

No. of feedwater piping component!:

...N..

reducers.. 9..d..

valves....d..

orifices,

...... Other components (specify) ~..........................................

l I.

S.

Maximum flow velocity in wet stean piping Q,... feet /second.

6.

Feedwater pressures ano temperatures (agtual (preferred) or design):

f* u l l load (pressure, psla/ temperature, Q1 N.

P: T"...

P: M.I.

P: N..

'P:

@f.T., {

. 'I..

P:

T: '. h..

T:.Fr9.

T: /.@,.

T: N.,

T:

V Ym v

'r D

g V BF Pump.

~ Steam Generators-Condensate Pump Cond. Polisners load (typicalf..';offull p.,gg p.1 gM -

p. 5,g-load):

L low p.

/

Y.[p p.

i T

.b..

T.b.

T M.'..

T : b.,.

T

~Q 7

V g

g P

{

g 7

7 V F Pump Steam Generators.

B Concensate Pump Cond. Polishers Please attech coples of the hes*

b.=8-4c U;eorams for your actual full load and tvelcal low lead.

• i a

a, l

h/f, f

~

C.

rEE0 WATER AND CONDENSAT[!. CHEMISTRY '

s l '.

'Please complete the'. attached Table.

, 2.

'feedwater' chemistry' history (average'or.tyo'icallvalues;_finalffeedwater):

^

p 1,

Year of_ oper.~:

JjLt,; :1974-

1976, 1978' 1980 1982 1983' '1985 J,,9J1 1987' 1!

2 s

pHof FW maximum' 9.8. 9.h

' 9. 4. - [ N. 9.6 9.7 9.9

. /0, '. L/ 0. / - ) 9,9 l!

o min _imum. V.S.- F.3

7. 0 f,7.

E'.5. : ff.'1.P9 T 3.; 9.5.'9./'.

average.~ 9./-.

9,0

f. '/.

7./^ ;- 4.0. - 4. /. 9.0.

9. 7. j 9. 9. 9, (,.

F oH-of condensate max imum. 9.5". 9@

9,6

' 9. 7. 9.5 9.9 '.

9.9 '. +/o. / ;., /o. / '. 9. 9.

minimum._7.9

. F./

7,o

. P./. F.6 F, (,.

7.7, 8.8 9.3

9. / '.

average. 9.*

9, o P,3.

9, /. -9,0." 9./

9 'E.' ' 9. 7.

9. F _. ' 9. (..

. - 25 5

//)O 5 '. /5_. '

00, ppb maximum. 1. /oo

/&O. So. /Co

.j minimum._4f_.S

'6

'6'.

'd6

.-45

'S ~. ' 4 5,

es. #5~.

3 i.

average. 5 l'h 20 S

' -S'.

es

'S.

S.

' S. 's*.

.)

Cat. Cond, uS/cm. *

.- x 4-W f.

Spec. Cond, uS/cm. /o.o. 7.o _._ 5o., 5. o

/,.0 _. 3,5 _. 9.o.- //,0:,. / 4'.o. /2. o '.

NH. ppe

+-

5 N-Soo. 2/oo 320e. 4/3oo. 35oo.

24].

31. 30.

j N

, ppb 5

/5 -

/5

.2o

/ 2. _. ' 43.'

l-Air Inleakage.

'j F

Baron ppb M-W-

4e

.- N 1

'M 2

{

SCFM

-]

% NobMA MA(LMLC l

Please send any water chemistry sumr.ary reports and data.

.j d

s.-

'\\

3.

Chemical additions 01 W

3.1 Ammoniat typ i ca l concentrat i on. i n ' f eedwater.... ' ppbi addefj at '...........

3.2 Hydrazine

typical concentration in feedwater JO. ppbi added at WWWF 3.3 Borle acid: typical concentration in feedwater.... ppb as B;--

3

.. added'at..................

P D.

MATERIALS

.o 1.

Feedwater piping - list ASTM or other. specification numbers' 5 / /.............. ; '

2.

wet steam piping:...SsM.................

3.

Attach results'of chemical analysis by you or pipe vendors.

MA I

1 l

1

~

l:

{i'

'10/Doce

-2 x

y r

it 1

y ENCLOSURE PWR EROSION-CORROSION QUESTIONNAIRE

]'

(Check or Circle All Applicable)

Utility Company:

wo/d M Unit Name:

"Th/O

'MWe /o [

Jfi - N(. - Zo 9 Y,~ i l bb7 Phone.No. M 3t/ / ev/ Q ')h by: N b tu_lo b ); /k w m /.e

.Date:

f i l l e::

in se vice: 19.i.Y.

Water Treat' ment:

AVT with;anmonia, trorpholine r

In Conoensate polishers: @ cation, powdex, mixed bed;;.....i of f eedwater flow';.

3 installed 19....:-operated in: H-OH, NH4-OH form.

D Cooling water:

@,' salt. brackish, cooling tower.

Copper alloy condenser tubing: @). no. Copper alloy FW beater tubes: @, h.. none.

Boric acid used since: 19 % ; during operation.-layup, low-loadsoaks-other..(/A..

i I

A.

EROS 10N-CORROSION EXPERIENCE l

, no.

j (fiis). ~ no@.

ll :

1.

Erosion-Corrosion identified in wet steam piping:

f 2.

Erosion-Corrosion of MSR Chevrons or mesh:

Chevron material: sta i nl e s s stee l. Nn steD. other.................... 7 3.

Erosion-Corrosion of feed-ater piping:

ye s, (_fg~p Dat e fo and...................

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

1 4

Erosion-Corrosion of:..... @,.... @..... diffusers,......: reducers. '1

.... c _3 D.... C[ $fckD.... othe r component s ( 5 pee l fy ) '.................

vat 5.

Erosion-Corrosion of J-Tubes: cyBa no.

6.

Erosion-Corrosion of feedwater distribution ring: yes,@

7.

Erosion-Corrosionofturbine:'8,LP;-identifycomponents:.................... '

8.

Erosion-Corrosion of other cycle components-(identify)._. b.EY::<........ 6'

[',

9.

Feedwater temperature range where erosion-corrosion found:

from....:to'......f 10.

Inspection frequency for feedwater piping...l.. yeard. Steam lines.d.. yearsT. j 11.

Inspection methods used: ultrasonic thickness, radiography, visual, other.......

'l A

M,

$5 c.<} cl % po lo. b wt.

l i

B.

PIPING DESIGN I

Maximumfeedwaterflowvelocity.....l.9...... feet /second.

1.

....h., second b...iload.

is operating.....l pump On at 2.

No. of feed pumps operating at 1001 load

.h..<..... feet /second.

l 3.

Maximum flow velocity when or.ly 1 pump j

4 No. of feedwater pipin cenponents:

7.\\.. elbows,

..(0..

Ts,...%..

diffusers,

.. r educ er s,

.4.... va l ves....... or i f i ces.

...... other components (specify)...........................................

5.

Maximum flow velocity in wet s t ean, p l p i ng... !@.C..... f e et / s ecor.d.~

1 6.

Feedwater pressures and temperatures (agtual (preferred) or-design):

i Full load (pressure, psla! temperature, F_)_:

' P : i..k.

l P: E.7..

P #/P...

P:,M.

P:

T:.I.S... ]

l T: f. M.. { (

T:.d:8.

T: 14. -

T: $#..

'r 7 c Y

1 g

V BF Pump Steam Generators Condensate Pump Cond. Polishers.

low load (tyolcal.. 1 of full load):

P: ?.R.

P:. F/.

P: N#.

P:

I..

P: '

T: fL...

T:. f 4.

T:.JC, T: ).43. -

T: "f.04.

y Q

9 y

k Ym v

1

'l v

G 7

V F. Pump Steam Generators B

Concensate Pump Coad. Pol l shers -

Please attach cooles of the heet balance diagrams for your actual full load'and j

h typical low load.

i 3 -j

. i y

(JyfT* 1 C.

FEECwATCR AND CONDENSAik CHEMISTRY l.

Please' complete the attached Table.

'I 2.

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

pst Year of oper.:

M 1974 1976 1978 1980 1982 1983 1985 1986 ' 1987 pH of FW maximum.

4.5 9,lo 9, Y 7.Y. M, N 7. /#>0. /#. 3 9.8.

.W.

si minimum.

. 3.4

'7. 0 9.I Tr.5. If

. f,7 9,3. 9, J average.

. 7. F

@/n 9 a.. 9.o. 20 WA 73. 9, f. 9, 't.

e 3J oH of condensate rrax imum.

9.3

/O,Y. 9.V. 9.5. /0,3. 9,7. /o./. /p,J.

9,f.

minimum.

8,/

7. /

9. /. _J, t/

f./

f. 9.

9. /

9 4

.:'7 J.

V average.

98 W,7. 93. 9.1 RO M) 98.

9 7 9Jo.

00. ppb maximum.

too

/ /y>..

So. /co (0

/f

/0

/f.. /0..

minimum.

es.

'Y

^5.

45

<f

'C 45. 2

./.

average.

I 2.

/0 15

'S f

'~S~

's. - S

. f.5_..

Cat. Cond, us,'em.

Y

-X.

N

-k v

.30 Sx c. Cond, uS/cm.

/.o

'/, o. /o. o

/,,0 KO

//

/5.o. K e. /J.0 H-of.

3. 0.

S.5. 3,0 3.0 NH;..pp& pp N R,,

ppb 45 5

10

/5 Y

/f.

37. if. 20.

p g

Baron, ppo

-x 4

M 3e y

4 _.

Air Inleakage.

6 SCFM

)f- 00 DRTA A VA1LA&.t' I

Please send any water chemistry sumrrery reports and data.

tr 3.

Chemical additions 3.1 A.Tacn i a :

typical concentration.in feedwater.... ppbi added at...........

3.2 Hydra::I ne typical concentrat ion in feedwater M. ppbi added at AM.MW C

3.3 Boric acid:

typical concentrat ion in f eedwater.... ppb as B; added at..................

D.

MATERIALS t

1.

feedaater piping - list ASTM or other specification numbers.h *.............

2.

Wet steam piping:... h.!..................

3.

Attach results of chemical ar.31ysis by you or pipe vendors,

/U/A t

v i

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