L-89-265, Responds to Generic Ltr 89-08, Erosion/Corrosion Induced Pipe Wall Thinning. Upgraded Erosion/Corrosion Std,Meeting NUMARC Guidelines,Will Be in Place by 900101
| ML17347B198 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie, Turkey Point, 05000000 |
| Issue date: | 07/21/1989 |
| From: | Woody C FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-89-08, GL-89-8, L-89-265, NUDOCS 8907310064 | |
| Download: ML17347B198 (6) | |
Text
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ACCESSION NBR FACIL:50-000 50-250 50-251 50-335 50-389 AUTH.NAME WOODY,C.O.
RECIP.NAME
- 8907310064 DOC.DATE: 89/07/21 NOTARIZED: YES Generic Docket Turkey Point Plant, Unit 3, Florida Power and Light C Turkey Point.Plant, Unit 4, Florida Power and Light C St. Lucie Plant, Unit 1, Florida Power a Light Co.
St. Lucie Plant, Unit 2, Florida Power 6 Light Co.
AUTHOR AFFILIATION Florida Power 6 Light Co.
RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
DOCKET I 05000000 05000250 05000251 05000335 05000389
SUBJECT:
Affirms that erosion/corrosion program meeting NUMARC guidelines implemented
& maintained,per Generic Ltr 89-08.
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P.O. Box14000, Juno Beach, FL 33408-0420 JULY 2 1 1989 L-89-265 10 CFR 50.54(f)
U. S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.
C.
20555 Gentlemen:
Re:
St. Lucie Units 1 and 2
Docket Nos.
50-335 and 50-389 Turkey Point Units 3 and 4
Docket Nos.
50-250 and 50-251 Erosion/Corrosion Induced Pipe Wall Thinning Generic Letter 89-08 Generic Letter 89-08 "Erosion/Corrosion-Induced Pipe Wall Thinning",
issued by the NRC on May 2,
- 1989, requested that licensees provide assurances that a long term erosion/corrosion monitoring program, consisting of systematic measures to ensure erosion/corrosion does not lead to degradation of single phase and two phase high energy carbon steel
- systems, has been implemented.
Florida Power 6 Light Company (FPL) has a long established two-phase wall thinning inspection program.
Single phase inspections began immediately at Turkey Point Plant following the 1986 Surry 2 event.
Your Staff reviewed our program at Turkey Point in August of 1988 in support of NUREG-1344 "Erosion/Corrosion-Induced Pipe Wall Thinning in U. S. Nuclear Power Plants",
and determined that FPL met NUMARC guidelines for inspection of erosion/corrosion in single-phase lines.
This program is now in place at St. Lucie.
In addition, a corporate procedure was developed to define the responsibilities within FPL for the continuation of this program for Turkey Point Units 3 and 4 and St. Lucie Units 1 and 2.
The program begins with FPL's engineering staff establishing the locations to be inspected.
These locations are chosen in both single phase and two phase piping systems.
Electric Power Research Institute's CHEC and CHECMATE computer programs, industry data, and previous inspection data are used as inputs and predictive tools, to calculate erosion rates and the expected remaining life for each location inspected.
Using wall thickness data provided by inspections, locations found to be below the established minimum wall thickness, or predicted to violate that minimum during the 890731 0064 8%)kg PDR ADOCK 05000250 P
PNU an FPL Group company foot
STATE OF FLORIDA
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COUNTY OF PALM BEACH
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That he is Actin Senior Vice President Nuclear, of Florida Power and Light Company, the Licensee herein; That he has executed the foregoing document; that the statements made in this document are true and correct to the best of his knowledge, information and belief, and that he is authorized to execute the document on behalf of said Licensee.
C. 0 Wo y
Subscribed and v rn to before me this
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-<<'NG'7ARY'PUJ;L"C, in and for the County of Pa'in Beach,- State of Florida ROTARY PUBLIC S'TATE OF FLORIDA HY COHHISSIOR EXP SEPT IBe19B9 My Comm~ssl
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U. S. Nuclear Regulatory Commission L-89-265 Page two 1
lt next operating cycle, are replaced.
Due to the continuing effort necessary to ensure the integrity of high energy piping systems, and experience gained from previous inspection
- programs, FPL's engineering staff is upgrading its engineering standard for this process.
The upgraded erosion/corrosion standard will be in place by January 1,
1990.
FPL's erosion/corrosion program also utilizes existing corporate NDE procedures for the execution of testing, data collection and management, and for the qualification of inspection personnel.
In accordance with Generic Letter 89-08, FPL affirms that an erosion/corrosion program which meets the NUMARC guidelines has been implemented and will be maintained for Turkey Point Units 3
and 4 and St. Lucie Units 1 and 2.
Should there be any questions please contact us.
Very truly yours, C.
O.
Woo Acting Se or Vice President Nuclear COW/RG/gp cc:
Stewart D. Ebneter, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant Senior Resident Inspector, USNRC, Turkey Point Plant
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