ML14190A983
| ML14190A983 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 07/20/1987 |
| From: | Eccleston K Office of Nuclear Reactor Regulation |
| To: | Utley E CAROLINA POWER & LIGHT CO. |
| References | |
| NUDOCS 8707250130 | |
| Download: ML14190A983 (5) | |
Text
DISTRIBUTION LIST:
DocketFile NRC & Local PDRs PD21 r/f DOCKET NO. 50-261 S. Varga G. Lainas Mr. E. E. Utley, Senior Executive Vice President E. Adensam Power Supply and Engineering & Construction K. Eccleston Carolina Power & Light Company OGC-Bethesda P. 0. Box 1551 E. Jordan Raleigh, North Carolina 27602 J. Partlow ACRS (10)
Dear Mr. Utley:
cc:
Plant Service List
Subject:
PWR SECONDARY SIDE WATER CHEMISTRY QUESTIONNAIRE - H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2.
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 infor mation available and describe the actions being taken by utilities regarding erosion/corrosion in feedwater pipes in nuclear power plants.
Central to an understanding of erosion/corrosion in pipes is an accurate assessment of erosion/corrosion experience, piping design, feedwater and condensate chemistry and piping materials.
To ensure that both the NRC and the nuclear industry have available a com prehensive collection of data regarding erosion/corrosion 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 efforton 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 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 believe the questionnaire is self explanatory; however, if questions arise or clarification is required, please contact your NRC Project Manager.
This request is covered by Office of Management and Budget Clearance Number 3150-0011 which expires December 31,1989. Comments on burden and duplication 5 0-130,o 13s76720-~
-P DR' AD4PCK 05000261 I
PFDR
JUL 2 0 1987
-2 may be directed to the Office of Management and Budget, Room 3208, New Executive Office Building, Washington D. C. 20503.
Sincerely, Kenneth T. Eccleston, Sr. Project Manager Project Directorate II-1 Division of Reactor Projects I/II
Enclosure:
PWR Erosion-Corrosion Questionnaire cc w/
Enclosures:
See next page SLA:PD21:DRPR PM:PD21:DRPR D:PD21:DRP r
PAnderson KEccleston EAdensam 7// /87 7//5/87 7/?d,87
Mr. E. E. Utley Carolina Power & Light Company H. B. Robinson 2 cc:
Thomas A. Baxter, Esquire Mr. Dayne H. Brown, Chief Shaw, Pittman, Potts and Trowbridge Radiation Protection Branch 2300 N Street, N.W.
Division of Facility Services Washington, DC 20037 Department of Human Resources 701 Barbour Drive Raleigh, North Carolina 27603-2008 Mr. McCuen Morrell, Chairman Darlington County Board of Supervisors Mr. Robert P. Gruber County Courthouse Executive Director Darlington, South Carolina 29535 Public Staff - NCUC P.O. Box 29520 Mr. H. A. Cole Raleigh, North Carolina 27626-0520 Special Deputy Attorney General State of North Carolina P.O. Box 629 Raleigh, North Carolina 27602 Mr. D. E. Hollar Associate General Counsel Carolina Power and Light Company P.O. Box 1551 Raleigh, North Carolina 27602 U.S. Nuclear Regulatory Commission Resident Inspector's Office H. B. Robinson Steam Electric Plant Route 5, Box 413 Hartsville, South Carolina 29550 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Suite 2900 101 Marietta Street Atlanta, Georgia 30303 Mr. R. Morgan General Manager H. B. Robinson Steam Electric Plant Post Office Box 790 Hartsville, South Carolina 29550 Mr. Avery Upchurch, Chairman Triangle J Council of Governments 100 Park Drive Post Office Box 12276 Research Triangle Park, NC 27709
ENCLOSURE PWR EROSION-CORROSION QUESTIONNAIRE (Check or Circle All Applicable)
Utility Company:
Unit Name:
MWe Filled by:_
Date:
Phone No.
In service: 19....
Water Treatment:
AVT with ammonia, morpholine, hydrazine.
Condensate polishers:
none, cation, powdex, mixed bed;.....
of feedwater flow; installed 19....; operated in: H-OH, NH4-OH form.
Cooling water: fresh, salt, brackish, cooling tower.
Copper alloy condenser tubing:
yes, no. Copper alloy FW heater tubes:
Boric acid used since: 19...; during: operation, layup, low load soaks, other.......
A.
EROSION-CORROSION EXPERIENCE
- 1. Erosion-Corrosion identified in wet steam piping: yes, no.
- 2. Erosion-Corrosion of MSR Chevrons or mesh:
yes, no.
Chevron material: stainless steel, carbon steel, other...................
- 3. Erosion-Corrosion of feedwater piping:
yes, no. Date found.................
Feedwater piping materials:............................................
- 4. Erosion-Corrosion of:.....
elbows......
Ts......
diffusers........
- reducers, 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)....................
- o'
- 9. Feedwater temperature range where erosion-corrosion found:
from.... to.....
F
- 10.
Inspection frequency for feedwater piping.....
years. Steam lines.....
years.
- 11.
Inspection methods used: ultrasonic thickness, radiography, visual, other......
B.
PIPING DESIGN
- 1. Maximum feedwater flow velocity............ feet/second.
- 2.
No. of feed pumps operating at 100 load......., second pump On at.....
- 7.
load.
- 3.
Maximum flow velocity when only I pump is operating............... feet/second.
- 4.
No. of feedwater piping components:....... elbows.......
Ts.......
diffusers,
...... reducers....... valves....... orifices, other components (specify).......................................
- 5.
Maximum flow velocity in wet steam piping............ feet/second.
- 6.
Feedwater pressures and temperatures (actual (preferred) or design):
O Full load (pressure, psiaftemperature, 0i P:.....
P:.....
P:
P:.....
P:.....
T:.....
T:
T:....
T:.....
T:.....
Condensate Pump Cond. Polishers BF Pump Steam Generators Low load (typical...
. of full load):
P:.....
P:.... P:.....
P:.....
T:.....
T:.....
T:.... T:.....
Condnsate Pump Cond. Polishers BF Pump Steam Generators Please attach copies of the heat balance diagrams for your actual full load and typical low load.
C.
FEEDWATER AND CONDENSATE CHEMISTRY I.
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 1985 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 Nn, ppb
- Bron, ppb Air Inleakage, SCFM Please send any water chemistry summary reports and data.
- 3.
Chemical additions
3.1 Ammonia
typical concentration in feedwater....
ppb; added at...........
3.2 Hydrazine
typical concentration in feedwater....
ppb; added at.........
3.3 Boric acid:
typical concentration in feedwater....
ppb as B; added at................
D.
MATERIALS
- 1. Feedwater piping -
list ASTM or other specification numbers..................
- 2.
Wet steam piping:........................
- 3.
Attach results of chemical analysis by you or pipe vendors.
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