ML20206A256
| ML20206A256 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/02/1987 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-1481, NUDOCS 8704070460 | |
| Download: ML20206A256 (15) | |
Text
_.. _ _ _ _ _ _ _ _ _ _ -
.8 Umon Et..scraic 1901 Gratiot Street. St. Louis Donald F. SchneII Vce President April 2, 1987 U.S. Nuclear Regulatory Commission h
Attn: Document Control Desk Washington, D.C.
20555 Gentlemen:
ULNRC-1481 DOCKET NUMBER 50-483 CALLAWAY PLANT ADDITIONAL INFORMATION CONCERNING THE CALLAWAY PLANT INSERVICE INSPECTION PROGRAM PLAN
Reference:
ULNRC-1457 dated March 3, 1987 The referenced letter transmitted the latest information on the Callaway Inservice Inspection Program Plan. As comriitted to in a phone call with NRC Staff and their consultant, EG&G, the attached information supplements the discussion of the Containment Spray System.
Relief Request B should no longer be considered at this time. Union Electric withdraws this Relief Request based upon expected advancements in examination technology and the length of time remaining prior to performance of the exams.
The NRC will be advised at a future date if any relief will be requested, i
Please contact us if there are any additional questions.
l Very truly yours, 1
1 Donald F. Schnell l
l DS/ dis Attachment 8704070460 870402 l
{DR ADOCK 05000483 PDR
\\
Maihng Address: P.O. Box 149, St. Louis, MO 63166 L
cc:
Gerald Charnoff, Esq.
Shaw, Pittman, Potts & Trowbridge 2300 N.
Street, N.W.
Washington, D.C.
20037 J. O. Cermak CFA, Inc.
4 Professional Drive (Suite 110)
Gaithersburg, MD 20879 W.
L.
Forney Division of Projects and Resident' Programs, Chief, Section lA U.S. Nuclear Regulatory Commission Region III 799 Roosevelt' Road Glen Ellyn, Illinois 60137 Bruce Little Callaway Resident Office U.S. Nuclear Regulatory Commission RRf1 Steedman, Missouri-65077 Tom Alexion (2)
Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 316 7920 Norfolk Avenue Bethesda, MD 20014 Manager, Electric Department Missouri Public Service Commission P.O. Box 360 Jefferson City, MO 65102
Attechm:nt to ULNRC-1481 Page 1 of 4 SUPPLEMENTAL INSERVICE INSPECTION PROGRAM PLAN:
CONTAINMENT SPRAY SYSTEM CALLAWAY NUCLEAR POWER PLANT
Attachm:nt to ULNRC-1481 Page 2 of 4 TABLE OF CONTENTS SECTION PAGE 1.
Introduction 3
2.
Weld Selection 3
3.
Calibration 3
4.
Program Plan and Schedule 4
TABLES PAGE Calibration Standards 3
Program Plan and Schedule Appendix A (9 pages) l l
l l
Attachmine to ULNRC 1481 i
Page 3 of 4 CONTAINMENT SPRAY SYSTEM 1.
INTRODUCTION
+
This documents presents the Supplemental Inservice Inspection (ISI) of the containment Spray System. The examinations identified in this plan are in excess of the examinations required by ASM2 BPV Code Section XI 1974 Edition Summer 1975 Addenda. Selection of welds in Class 2 piping is based upon this edition and addenda as required by 10CFR50.55a(b)(2)(iv) dated 1 January 1983.
10CFR50 of 1 January 1983 was that Code referenced for ISI program development based upon a commercial operation date of 18 December 1984. Callaway is committed to ASME BPV Code Section XI 1980 edition, Winter 1981 addenda for all other ISI activities.
The methodology of examination and the acceptance criteria will be in accordance with Document 83A0977, " Inservice Inepection Program Plan General Reference Text" for Callaway.
2.
WELD SELECTION The welds identified in this plan have been selected by using the general guidelines of Code Case N-408.
However, the use of these guidelines is not a commitment of the Callaway Nuclear Plant to Code i
Case N408.
The number of welds selected total 7.5% of the austenitic stainless welds not exempted by Code Case N408. However, the selected welds are limited to those in piping with a diameter >NPS 4 inch and a vall thickness 23/8 inch.
The examinations are distributed among terminal ends and structural discontinuities prorated to the degree practical and, the examinations are distributed between various line sizes prorated to the degree practical.
1 l
In addition, the first veld past the normally closed isolation valve in one train will be examined.
3.
CALIBRATION STANDARDS Table 1 lists the Calibration Standards for ultrasonic examinations scheduled for the Containment Spray System.
TABLE 1 12 - 40S - 00.406 - SA312 - TP304 - SS - 84 i
14 - STD - 00.375 - SA312 - TP304 - SS - 85 10 00.594 - SA358 - TP304 - SS - 86
Attechmant to ULNRC-1481 Page 4 of 4 4.
PROGRAM PLAN AND SCHEDULE The specific Containment Spray ISI exaninations are identified in the Program Plan and Schedule Tabic. This Program Plan lists all the required examinations for the first 10 year (120 months) interval of 3 periods of 40 months each.
The use of the selection criteria identified in Section 2 results in the selection of 9 welds (7.5% of 116) and any associated longi-tudinal seams, and I weld which is past the normally closed isolation valve. This is less than the minimum required number of 28 welds identified in N408. Hosever, N408 pertains to RHR, ECC, and CHR systems. To accommodate this and the future compliance to later editions of Section XI which may require additional weld selection in the RHR and ECC systems, the welds and associated longitudinal seams will be inspected once every period. This is in excess of the once per interval requirement.
Each weld and component is designated by a unique identification number, and then described. Also identified are applicable examination method, procedure number, and calibration standard number.
Extent of examination for Class 2 longitudinal welds is 2.5 times the wall thickness measured from the circumferential weld (note 2.5t in
]
remarks column).
4 The direction of upstream (LU) and downstream (LD) for longitudinal seams is measured from the circumferential weld.
The procedures noted in the attached Program Plan and Schedule Tables refer to examination procedures identified in the Inservice Inspection Program Plans provided to Union Electric by Nuclear Energy Services under contract 10466-M-189.
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Attachm:nt to ULNRC-1481 Page 1 of 9 i
1 APPENDIX A
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CALLAk'AY ISI PROGRAM PLAN AND SCHEDULE TABLE At.tachment to ULNRC-1481 Appendix A Containment Spray System Page 2 of 9 Reference Drawing:
ISI-M23-EN01-A (See Fig. 1)
Period: All CODE COMPONENT SIZE COMPONENT PROC.
CAL CODE EXAM IDENTIFICATION (IN)
DESCRIPTION NO.
BLOCK CAT.
METH REMARKS l
2-EN-01-F001 12 Pipe to Valve EN-V003 83A1006 84 N/A UT 83A1009 84 PT 2-EN-01-F001-LU 12 Pipe - longitudinal weld 83A1006 84 N/A UT 2.5T upstream 83A1009 PT 2.5T 2-EN-01-F007 12 Pipe to Valve EN-V002 83A1006 84 N/A UT 83A1009 PT 2-EN-01-F007-LU 12 Pipe - longitudinal weld 83A1006 84 N/A UT 2.5T upstream 83A1009 PT 2.5T 2-EN-01-S004-B-LU 12 Elbow - longitudinal weld 83A1006 84 N/A UT 2.5T upstream 83A1009 PT 2.5T
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i CALLAWAY ISI
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PROGRAM PLAN AND SCHEDULE TABLE Attachment to ULNRC-1481 l
Appendix A Containment Spray Sy:-tem Page 3 of 9 Reference Drawing:
ISI-M23-EN01-A (Sce Fig. 1)
Period: All CODE COMPONENT SIZE COMPONENT PROC.
CAL CODE EXAM IDENTIFICATION (IN)
DESCRIPTION NO.
BLOCK CAT.
METH REMARKS 2-EN-01-S004-B 12 Elbow to pipe 83A1006 84 N/A UT 83A1009 PT 2-EN-01-S004-B-LD 12 Pipe - longitudinal weld 83A1006 84 N/A ITT 2.5T downstream 83A1009 PT 2.5T 2-EN-01-S007-B-LU 14 Pipe - longitudinal weld 83A1006 85 N/A UT 2.5T upstream 83A1009 PT 2.5T 2-EN-01-S007-B 14 Pipe to elbow 83A1006 85 N/A UT 83A1009 PT 2-EN-01-S007-B-LD 14 Elbow-longitudinal weld 83A1006 85 N/A UT 2.5T 4
downstream 83A1009 PT 2.5T l
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PROGRAM PLAN AND SCHEDULE TABLE Attachment to ULNRC-1481 Appendix A Containment Spray System Page 4 of 9 Reference Drawing:
ISI-M23-EN02-A (See Fig. 2)
Period: All CODE COMPONENT SIZE COMPONENT PROC.
CAL CODE EXAM IDENTIFICATION (IN)
DESCRIPTION NO.
BLOCK CAT.
METH REMARKS 2-EN-02-F005 12 Valve EN-V008 to pipe 83A1006 84 N/A UT 83A1009 PT 2-EN-02-F005-LD 12 Pipe - longitudinal veld 83A1006 84 N/A UT 2.5T downstream 83A1009 PT 2.5T 2-EN-02-F007-LU 14 Elbow - longitudinal weld 83A1006 85 N/A UT 2.5T upstream 83A1009 PT 2.5T i
l 2-EN-02-F007 14 Elbow to pump PEN 01B 83A1006 85 N/A UT i
83A1009 PT 2-EN-02-F009-LU 12 Pipe - longitudinal 83A1006 84 N/A UT 2.5T weld upstream 83A1009 PT 2.5T 2-EN-02-F009 12 Pipe to Valve EN-V009 83A1006 84 N/A UT 83A1009 PT
m.
CALLAWAY ISI PROGRAM PLAN AND SCHEDULE TABLE Attachment to ULNRC-1481 Appendix A Containment Spray System Page 5 of 9 Reference Drawing:
ISI-M23-EN02-A (See Fig. 2)
Period: All CODE COMPONENT SIZE COMPONENT PROC.
CAL CODE EXAM IDENTIFICATION (IN)
DESCRIPTION NO.
BLOCK CAT.
METH REMARKS 2-EN-02-S003-A-LU 12 Pipe to elbov longitudinal 83A1006 84 N/A UT 2.5T weld upstream 83A1009 PT 2.5T 2-EN-02-S003-A 12 Pipe to elbow 83A1006 84 N/A UT 83A1009 PT 2-EN-02-S003-A-LD 12 Pipe to elbow longitudinal 83A1006 84 N/A UT 2.5T veld downstream 83A1009 PT 2.5T 2-EN-02-S005-B-LU 14 Pipe - longitudinal weld 83A1006 85 N/A UT 2.5T upstream 83A1009 PT 2.5T d
2-EN-02-S005-B 14 Pipe to flange 83A1006 85 N/A UT 83A1009 PT 4
CALLAWAY ISI PROGRAM PLAN AFD SCHEDULE TABLE Attachment to ULNRC-1481 Pcnd Containment Spray System ge 6 f9 Reference Drawing:
ISI-M23-EN02-B (See Fig. 3)
Period: All CODE COMPONENT SIZE COMPONENT PROC.
CAL CODE EXAM IDENTIFICATION (IN)
DESCRIPTION NO.
BLOCK CAT.
METH REMARKS 2-EN-02-F017 10 Valve EN-HV-0012 to Pipe 83A1006 86 N/A UT 83A1009 PT I
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SPRAY SYSTEt1 ISI-M23-Efl02-B Appendix A Page 9 of 9 Figure 3
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