ML18151A056

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Forwards PWR erosion-corrosion Questionnaire Re Water Chemistry Survey,Per 870721 request.W/12 Ovesize Diagrams
ML18151A056
Person / Time
Site: Surry  Dominion icon.png
Issue date: 09/18/1987
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML18130A451 List:
References
87-461, NUDOCS 8709220393
Download: ML18151A056 (5)
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Text

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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 W. L. STEWART VICE PRESIDENT NUCLEAR OPERATIONS September 18, 1987 U. S. Nuclear Regulatory Commission Attn:

Document Control Desk Washington, D. C.

20555 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 WATER CHEMISTRY SURVEY Serial No.87-461 NOD/SBE:vlhl Docket Nos.

50-280 50-281 License Nos. DPR-32 DPR-37 As requested by your letter of July 21, 1987, the PWR Erosion-Corrosion Questionnaire has been completed and is attached.

In addition, the requested copies of the heat balance diagrams for Surry Units 1 and 2 are included.

If you have any further questions or require additional information, please contact us.

Very truly yours, W. L. Stewart Attachment cc:

U. S. Nucle~r Regulatory Commission Region II 101 Marietta Street, N. W.

Suite 2900 Atlanta, Georgia 30323 Mr. W. E. Holland NRC Senior Resident Inspector Surry Power Station r 8709220393-~0918 R.

"-DOCK 05000280

~D M

'PDR

e PWR EROSION-CORROSION QUESTIONNAIRE (Check or Circle Al I Applicable)

ENCLOSURE Uti I ity Compar:iy: Virginia Elec. & Power Co Unit Name: Surry Unit 1 HWe _8_1~1 ___ _

(804)

Fi 11 ed by: E.T. Swindell/A. Hall/L. MitzelseltOate: 8/24/87 Phone No. 35 7-3184 Ext. 243 In service: 19 n...

Water Treatment:

AVT with arrmonia.~ hydrazine.

Condensate pol !shers:

mixed bed; 9~a9.i of feedwater flow; installed 19.~!., operated in: H-OH, ~

Cooling water: ~

brackish,~

Copper al Joy condenser tubing: ~

no. Copper al Joy FW heater tubes:

LP, HP, ~

Boric acid used since: 19 :ti/.4,:r_-durlng: operation, layup, low load soaks, other.. Pi/.A **

A.

EROSION-CORROSION EXPERIENCE

1.

Erosion-Corrosion Identified in wet steam piping: yes.~

2.

Erosion-Corrosion of NSR Chevrons or mesh: ~

no.

Chevron material: stainless steel,~ *******.********..***

3.

Erosion-Corrosion. of feedwater piping:

yes,:imx Date found.Jt-;-J);-~fi ****.*...*

F eedwat.er p Ip f ng mater i a Is:.. c.<\\r.b.o.n *. s.t~~). ************************************

.c.

Erosion-Corrosion of: ** ~ ** elbows, *. X. ** Ts,.~(~. diffusers,.** ~ ** : reducers,

.~ *. valves,.~.. orifices, ***. other components (specify)...*.......... ~...

5.

Erosion-Corrosion of J-Tubes:

yes, xxxx 6 *. Erosion-Corrosion of feedwater distribution ring:XJU!]IX no.

7.

Erosion-Corrosion of turbine:

HP, LP; x *******..*...*....*.

8.

Erosion-Corrosion of other cycle COITl)Onents (identify)'.~l~......... 0 ***********

9.

Feedwater temperature range where erosion~corrosion found:

from ~qq_Fto.~~Q.°F

10.

Inspection frequency for feedwater piping.~ *** years. Steam lines ** :.* years.

11.

Inspection methods used:

ultrasonic thickness, radiography, visual,~.*...

B.

PIPING DESIGN

  • Refueling-about every 18 months I.

Maximum feedwater flow velocity....2.2.,!+ ***** feet/second.

2.

No. of feed pumps operating at 1ooi load *** i ***, second pump On at ** 5,Q,\\ load.

3.

Maximum flow velocity when only I pump is operating ****** ~~~ ****** feet/second.

4."

No. of feedwater piping components:.JP?... *elbows,!-** ':~ ** Ts, ** Q *** diffusers,

~2 d

45 I

2

  • f *

.~ **** re ucers, ****** va ves, *..*** or, ices, th t

(

'f ) 1 Lateral

  • . * * *
  • o es-canpionen s spec, y
5.

Hax I mum f I ow ve I oc I ty in wet stearr, piping...'. ii~ d... feet/second. *

6.

feedwater pressures and tef11)eratures design):

Full load (pressure, e,sfa/temperature, f).:

"'* '537.8 psi.a P* 497.8 psi.a ~.409.5os.n.1094.4gs1. P* 832.P,Sia

,.. *.., * * * *o

  • *
  • t>*
  • r.
  • ** *-o r * * *. * *
  • * * * *o T: iQJ..* 6. F T:10_2J *.f.

T:3?Q~~ F T: ~n.. ~ F T: ~~~*.2. F Con Pump Steam Generators fu 11 load):

p:.....

  • Not Please attach copies of the heat balance diagrams for your actual full load and typfcal low load.

C.

FEEOWATER ANQ CONDENSATE CHEMISTRY

1.

Please complete the attached Table.

2.

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

1972

. ** Year of oper.:

XB.1K.

197 4 1976

~ 1980 1982 i 983

  • ll§ 1986 l.1§1 pH of rw maximum, 10.00. 9.40.11.20. 9.45. 9.82. 9.32. 9.1~~- 9.18. 9.11.9.08.

minimum.8.82. 6.45. 8.65, 8,62, 6.96. 7 40, 8.61, 8,80, 8,80.a.....liQ.

average, 9.39, 8.81. 9.42. 9.04. 9.00. 8.92. 8,91,-

8,88. 8.88.8.89.

pH of condensate maximum.10.08.10.40.10,20, 9.51. 9.45. 9.19. 9.18, 9.19, 9 12.2....19..

minimum.~. 6.05

  • 8,80, 8.23, 6.48. 8.03. 8.61, 8 80, 8 82,LI.a.,

average,--1.:..22, 9,08

  • 9.54
  • 9.01
  • 9.02
  • 8,95
  • 8 94, 8 96* 8 95,8.....9.fi.
  • DO, ppb maximum
  • 100+
  • 70 *.

24.

  • 17,

-22,

10

  • 200 180
  • SQ

,8-5.....,

min I mum

  • 2 O
  • O O

o.

  • __ o o. o. 1
  • o, 1
  • LJL.

average.14.9. 0.15.

O 1

  • 2.1
  • O
  • 4.13. 2.8. 1.91.J.....L.

-:: Cat. Ccnd. uS/cm

  • N/A. 2.2
  • 0.48. 0.44. 0.65.
  • 0.10. 0.12. 0.09. 0.09.0.09*,

-:: Spec. Cond. uS/cm 11.:..L. 6.28.10.94. 4.03. 4.15. 2.17. 1.99. 2.32. 2,23.2.23.

-:: NH3, ppb

.-1.2l,. N/A

  • 960
  • 200
  • 440 250 200
  • 210
  • 200

.llQ_.

-::NR,...-.

72. 9.92. 7.0. 3.0.13.8. 36
37. 37 27

._26.

2,4 BOron, ppb
  • N/ A
  • N/ A
  • N/ A
  • N/ A
  • N/ A
  • N/ A
  • N/A
  • N/A
  • N/A
  • .lli.1!.,

Air lnleakage, SCFH

  • ..!.h2_. N/A
  • N/A

, N/A

, N/A

  • 12.8
  • 15.2
  • 11.2
  • 9.2 *..1.:.1..
  • Condensate Data Please send any water chemistry sunmary reports and data.
3.

Chemical addftfons Cond, Polisher

3. I 3.2

3.3 Anrnonfa

typical concentration in feedwater -}~~. ppbi added at~(~\\~~~~...

Hydrazine:

typical concentration in feedwater JPP. PPbi added at-~~~~....

Boric acid: typical concentration in feedwater ~/A ppb as Bi added at.~li..............

O.

11ATERIALS Pipe -

ASTM A106 Grade B (Grade A or B for 2" or smaller)

Fittings -

2" & under:

ASTM A105, G~ ~- _II--2~ & over:

~STM A234 WPB l *. feedwater piping - 11st ASTN or other specificatTon nur'*>ers....................

2.

Wet steam piping: ******************* ~ ****** Pipe - A53, Gr. A or B, Al06 Gr. A or B; Fittings -

2" & under AlOS, Gr. II; 2~" to 24" A2_34 WPA & WPB

3.

Attach results of chemical analysis by you or pl_pe vendors.

N/A

    • Data covers unit operation from online to 100% Rated Thermal Power 70/Doc4 J

Uti I ity Company:

PWR EROSION-CORROSION QUESTIONNAIRE

( Check or Ci re I e A I I App I i cab I el Virginia E1ec. & Power CC\\Jnit Name:

Surry Unit 2 ENCLOSURE MWe 811 (804) filled by:E.T. Swindell/A. Hall/L. MitzelseltDate: 8/24/87 Phone No.-357-3184 Ext. 243 In service: 19.n.

Water Treatment:

AVT with arrrnonia, ~

hydrazine.

Condensate Pol lshers:

mixed bed; ~~~~.i of feedwater.flow; installed 19 ~9.. ; operated in: H-OH.~

Cool_ing water: ~brackish, ~<ntHX Copper a 11 oy condenser tubing: ~no. Copper a 11 oy FW heater tubes:

LP, HP, XXKle{X Boric acid used since: 19 ~//\\-;* during: operation, layup, lov load soaks, other'.. N./.A...

A.

EROSION-CORROSION EXPERIENCE J.

Erosion-Corrosion identified in wet steam piping: yes.~

2.

Erosion-Corrosion of HSR Chevrons or mesh: XXKJiX no.

Chevron material: stainless steel,

3.

Erosion-Corrosion of feedwater piping:

yes, no.

Date found *.l.2;-,l.3;-.8,6.,.***..**

F eedwater pf pf ng mater i a-1 s: ** c.a.rPPP. Pt~~ 1-o ************ 8 *********** * **********

~.

Erosion-Corrosion of: *. ~ ** elbows, *. 2C ** Ts, ~1.4.. diffusers, **. ~ ** : reducers,

  • ~-
  • va Ives,.~.
  • orifices, * *.. other components (specify)..**..*...*..*...*
5.

Erosion-Corrosion of J-Tubes:

yes, )DlXX

6.

Erosion-Corrosion of feedwater distribution ring:~ no.

7.

Erosion-Corrosion of turbine:

HP, LP; *

8.

Erosion-Corrosion of other cycle components (identify).ij/.4 *....*..* d ***********

9.

Feedwater temperature range where erosion-corrosion found:

from ~QQ.Fto AS.Q.

0 f

10.

Inspection frequency for feedwater piping ** f ** years. Steam lines ** ~.. years.

11.

Inspection methods used:

ultrasonic thickness, radiography, visual,~ *...*

B.

PIPING DESIGN

  • Refueling-about every 18 months
l.

Maximum feedwater flow velocity.... 2.2.. ~..... feet/second.

2..

No. of feed pumps operating at 1001. load.** ? ***, second pump On at.~q.. i load.

3.

Maximum flow velocity when only 1 pump is operatingc*****~~~ ******* feet/second.

185 49 0

4.

No. of feedwater piping c~nents: ***.... elbows, ****** Ts, **..** diffusers, 32 d

45 1

2

  • f I
    • .*** re ucers, ****** va ves,....*. or1
ces,
  • . *... other components (specify>.1. !,~ ~~!' ~!..................................
5.

Haxfmum flow velocity In wet stearr, piping.... ~~~d.... feet/second.

6.

feedwater pressures and t~eratures design):

Ful 1 *load (pressure, psla/temperature, lli P. 537. 8 P* 497. 8 psia ~. 409. Sp M 1094. 4ps *.11ii. 832 P.sia

  • * * * * *o
  • *
  • o-
  • r.
  • o **o

~

  • o * * *o r * * * * * *o T: \\Q\\..(~ F T:10_2:2 *.F.

T:3?9~~ F T:-n~~~ F T: ~~~--~ F Con ensate Pump Steam Generators Low load (typical ~S..i of full load):

P.606. 2.PSI.a P.*

  • * * *a T:8~.* ~_F.

T:.....

Steam Generators

  • Not Available Please attach copies of the heat balance diagrams for your actual full load and tyPlcal low load.

e C.

FEEDWATER ANQ CONDENSATE CHEMISTRY

1.

Please complete the attached Table.

2.

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

1973.

  • '** Year of oper.: xxxxnx 1974 1976 1978 1980 1982 1983 1985 1986

.11§2 pH of fW maximum. 9.60, 9. 72.10.39. 9.40. 9.39. 9.51. 9.17.9.18. 9.13

  • 9. 07.

minimum. ~. 6.30. 8.15. 8.50 7.14. 8.24. 6.81.8.70. 8.80. 8.8Q average. 8.81, 8.69. 9.44. 9.03. 8.83. 8.95. 8.95,.8.89. 8. 88 -~-

condensate pH of maximum.~. 9.62,10.36. 9.41 9.19 9.44. 9.12,9.10. 9.11, 9.O&

minimum

  • 6.65. 6.42. 7.81. 6. 83. 6.81
8. 73
  • 8.58. 8.39, 8, 72.s":BQ average. 8.87. 8.89. 9.59. 9.01. 8.71
8. 99
  • 8.92. 8.93, 8. 96. °"'s:97.

'i'< 00, ppb maximum. 50. 20* ** 5. 0.* 80.

20

.. 5.0. 60. 70. 180. 8. 2, minimum

  • 0 0

0 0

0 0. 0

  • 0.1
  • 0. 1.~.

average. "T."7. 0.3. 0.0. 2.0. 3.3. 0.0. 1. 0

  • 2. 7
  • 1. 2
  • 2. 5 *

,'< Cat. Cond. uS/cm

  • 1. 07. 1. 22. 0.26. 0.32 0.61 0.10. 0.11. 0;10, 0. 09,'o.TQ
  • Speco Condo uS/cm.Lll_. 5.4

.14.18 3.62 8.62 2.29 1.93. 2.21

  • 2.17
  • 2. 2~
  • NH, ppb

. -1.il..~

N/A 1437 200 290 240. 180 *. 210

  • 210
  • 220.
  • N~,ppb

.ll.JL. 11.2. 8.0. 3.0. 39 37 33. 32 36.zr.

~r~, ppb

..JJ/..L.

N/A. N/A. N/A. N/A.. N/A. N/A. N/A. N7A

  • N7 A.

Air lnleakage, SCfH

...!.:_L.

N/A. N/A.. N/A N/A 9.8

13. 7 8.8 8.6 2.7
  • .Condensate Data Please send any water chemistry SUIT'll\\ary reports and data.
3.

Chemical add It Ions.

Cond. Polisher Amnonla:

typical concentration in feedwater *}?9. rbi added at,E,f.f.l.~e.1:~.*

Hydrazine:

typical concentration in feedwater 19.. ppb; added at.~~~~....

Boric acid:

typical concentration in feedwaterN/~ ** ppb as Bi

3. I 3.2 3.3 N/A
o.
1.
2.
3.

added at *.................

HATERIALS Pipe - ASTM Al06 Grade B (Grade A or B for 2" or smaller)

Fittings - 2" & un_der:

ASTM AlOS, Gr. II--2~ & over:

ASTM A234 WPB feedwater piping - list ASTH or other speciflcatlon numbers **.****.............

Wet *steam piping:.......................... -Pipe - A53, Gr. A or B, Al06 Gr. A or B; Fittings - 2 11 & un.der Al05, Gr. II; 2~" to 24" A234 WPA & WPB Attach results of chemical analysis by you or pl~e vendors.

N/A

    • Data covers unit operation from online to 100% Rated Thermal Power.

70/Doc4

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