ML17227A344
| ML17227A344 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 03/10/1992 |
| From: | Sager D FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| L-92-60, NUDOCS 9203180267 | |
| Download: ML17227A344 (4) | |
Text
ACCELERATED DISTRIBUTION DEMONSTPWTION SYSTEM 4
REGULATO INFORMATION DISTRIBUTION STEM (RIDS) 4P ACCESSION NBR:9203180267 DOC.DATE: 92/03/10 NOTARIZED: NO FACIL,:50-335 St. Lucie Plant, Unit 1, Florida Power
& Light Co.
50-389 St. Lucie Plant, Unit 2, Florida Power
& Light Co.
AUTH.NAME AUTHOR AFFILIATION SAGER,D.A.
Florida Power
& Light Co.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
DOCKET 05000335 05000389 R
SUBJECT:
Requests approval to incorporate Code Case N-498 re alternative rules for 10 yr hydrostatic pressure testing for Class 1
2 sys for use in 10 yr ISI programs.Use of sys reduces need for special sys alignments.
DISTRIBUTION CODE:
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TITLE: OR Submittal: Inservice Inspection/Testing/Relief from AS E Code NOTES:
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P.O. Box 128, Ft. Pierce, FL 34954-0128 FIPIl March 10, 1992 L-92-60 10 CFR 50.4 10 CFR 50.55a U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.
C.
20555 Gentlemen:
RE:
St. Lucie Units 1 and 2
Docket No. 50-335 and 50-389 ASME Code Case N-498 Re uest for Use Pursuant to 10 CFR 50.55a(a)(3),
Florida Power and "Light Company requests approval to incorporate Code Case N-498, Alternative Rules
.for 10 Year Hydrostatic Pressure Testing for Class 1 and 2 Systems,Section XI, Division 1, for use in the St. Lucie Unit 1 and 2 Ten Year Inservice Inspection Programs.
This Code Case is an alternative to the 10 year hydrostatic test presently required by ASME Section XI for Class 1 and 2 systems.
Use of this alternative reduces the need for special system alignments and temporary system alterations to conduct hydrostatic tests.
Temporary system alterations include removal of check valve internals, installation of temporary jumpers, and in some instances the blanking off of pressure relief devices.
The preparation for and performance of the Ten Year Hydrostatic Tests involves excessive
- cost, man-hours, and man-REM with little or no compensating increase in the level of quality or safety.
A copy of the Code Case is attached for your information.
Code Case approval is requested to support its use in the upcoming St. Lucie Unit 2 outage scheduled to begin April 21, 1992.
Please contact us if there are any questions about this submittal.
Very truly yours, tA PJ0 OHQ M0 0.
HO OO A)A O'O NO NK3 OQ
'KIACK 0
tL'IIA 0 Q.CI D. A Vic St.
ager resident cie Plant DAS/GRM/kw DAS/PSL 8635-92 g G V ~aPFPf, Group company cc:
Stewart D. Ebneter, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant
CASES OF ASME BOILER AND PRESSURE VESSEL CODE CASE N-498 Approval Date: May 13, 1991 See Numerical Index for expiration and any reaffirmation dates.
Case N-498 Alternative Rules for 10-Year Hydrostatic Pressure Testing for Class 1 and 2 SystemsSection XI, Division 1 lltquity: What alternative rules may be used in lieu of those required by Section XI, Division 1, Table IWB-2500-1, Catogory B-P, and Table IWC-2500-1, Category C-H, for the 10-year hydrostatic pressure test?
Reply:
(a) It is the opinion of the Committee that as an alternative to the 10-year hydrostatic pressure test required by Table IWB-2500-1, Category B-P, the following rules shall be used.
(1) A system leakage test (IWB-5221) shall be conducted at or near the end of each inspection in-terval, prior to reactor startup.
(2) The boundary subject to test pressurization during the system leakage test shall extend to all Class 1 pressure retaining components within the sys-tem boundary.
(3) Prior to performing VT-2 visual examina-tion, the system shall be pressurized to nominal op-erating pressure for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for insulated systems and 10 minutes for noninsulated systems.
The system shall be maintained at nominal operating pressure during the performance of the VT-2 visual examination.
(4) Test temperatures and pressures shall not exceed limiting conditions for hydrostatic test curve as contained in the plant Technical Specifications.
(5) The VT-2 visual examination shall include all'components within the boundary identified in (2) above.
(b) It is also the opinion of the Committee that, as an alternative to the 10-year hydrostatic pressure test required by Table IWC-2500-1, Category C-H, the following rules shall be used.
(1) A system pressure test shall be conducted at or near the end of each inspection interval or during the same inspection period of each inspection inter-val of Inspection Program B.
(2) The boundary subject to test pressurization during the system pressure test shall extend to all Class 2 components included in those portions ofsys-tems required to operate or support the safety system function up to and including the first normally closed valve (including a safety or relief valve) or valve ca-pable of automatic closure when the safety function is required.
(3) Prior to performing VT-2 visual examina-tion, the system shall be pressurized to nominal op-erating pressure for a minimum of 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for insu-lated systems and 10 minutes for noninsulated systems. The system shall be maintained at nominal operating pressure during the performance of the VT-2 visual examination.
(4) The VT-2 visual examination shall include all components within the boundary identified in (2) above.
859 SUPP. 9 NC