1CAN050805, Snubber Testing Program for Fourth Inspection Interval
| ML081370556 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/16/2008 |
| From: | James D Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 1CAN050805 | |
| Download: ML081370556 (13) | |
Text
1CAN050805 May 16, 2008 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
Snubber Testing Program for Fourth Inspection Interval Arkansas Nuclear One, Unit 1 Docket No. 50-313 License No. DPR-51
Dear Sir or Madam:
10 CFR50.55a references the OM Code to include the 1995 Edition through the 2003 Addenda. ASME OM Code-2002 Edition, Subsection ISTA-3110 requires the development of test plans for each test interval. These plans are to be filed with the regulatory authorities having jurisdiction at the plant site. Entergy Operations, Inc. (Entergy) is therefore providing the test plan for the dynamic restraints (snubbers) at Arkansas Nuclear One, Unit 1 (ANO-1) for the fourth inspection interval. This interval commences on June 1, 2008, and concludes on May 31, 2017. The plan is attached.
Entergy is providing this plan for information only. Entergy is not requesting NRC approval of the plan. Any relief requests associated with this plan will be submitted as a separate document.
The plan does include two new commitments as summarized in Attachment 2.
If you have any questions or require additional information, please contact me.
Sincerely, DEJ/rwc Attachments: 1.
Snubber Test Plan for the Fourth Inspection Interval
- 2.
List of Regulatory Commitments Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-4619 Dale E. James Manager, Licensing Nuclear Safety Assurance Arkansas Nuclear One
1CAN050805 Page 2 of 2 cc:
Mr. Elmo E. Collins Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector Arkansas Nuclear One P. O. Box 310 London, AR 72847 U. S. Nuclear Regulatory Commission Attn: Mr. Alan B. Wang MS O-7 D1 Washington, DC 20555-0001 Mr. Bernard R. Bevill Director Division of Radiation Control and Emergency Management Arkansas Department of Health & Human Services P.O. Box 1437 Slot H-30 Little Rock, AR 72203-1437
1CAN050805 Snubber Test Plan for The Fourth Inspection Interval to 1CAN050805 Page 1 of 8 Snubber Test Plan for the Fourth Inspection Interval The Arkansas Nuclear One, Unit 1 (ANO-1) Snubber Test Plan for the fourth inspection interval has been prepared in accordance with the guidance provided in ASME OM Code-2002 Edition, Subsection ISTA-3110.
INTRODUCTION 10 CFR 50.55a, "Codes and Standards," incorporates by reference the ASME Code for Operation and Maintenance of Nuclear Power Plants that includes rules for inservice examination and testing of snubbers at nuclear power plants. Paragraph 50.55a(f)(4)(ii) requires inservice testing to be conducted in accordance with the requirements of the latest edition and addenda of the Code incorporated by reference in paragraph (b) of this section 12 months before the start of the 120 month interval. For ANO-1, this would be the 2001 Edition and Addenda through 2003 of the ASME Code. Paragraph 50.55a(b)(3)(v) allows Subsection ISTD (Preservice and Inservice Examination and Testing of Dynamic Restraints (Snubbers) in Light-Water Reactor Nuclear Power Plants) to be used in place of the requirement for snubbers in ASME Section XI, IWF-5200(a) and (b) and IWF-5300(a) and (b),
by making appropriate changes to their Technical Specifications (TS) or licensee-controlled documents. Inservice examinations must be performed using the VT-3 visual examination method described in ASME Section XI, Article IWA-2213.
The ANO-1 snubber inspection program is located in the ANO-1 Technical Requirements Manual (TRM) (Section 5.5.1). The TRM will be revised prior to the beginning of the fourth inspection interval relevant to the use of Subsection ISTD.
The third 10-year interval for inservice inspection of snubbers at ANO-1 ended May 31, 2007.
Article IWA-2430 of ASME Section XI contains a provision to extend inservice inspection intervals by as much as one year. Therefore a one-year extension to May 31, 2008 has been applied under the rules of ASME Section XI. The fourth inspection interval for ANO-1 snubbers therefore will commence on June 1, 2008 and conclude on May 31, 2017.
TEST PLAN
- 1.
Relationship with Technical Specifications No conflicts between ASME OM ISTD requirements and the requirements of ANO-1 TS have been identified. ANO-1 intends to make changes to the ANO-1 TRM to reference the requirements of ASME OM ISTD in place of the current TRM requirements for visual examination, functional testing, and snubber seal replacement.
to 1CAN050805 Page 2 of 8
- 2.
Quality Assurance Subsection ISTA of the 2001 Edition including 2002 and 2003 Addenda provide General Requirements applicable to OM Code activities. These requirements shall be applied to snubber program activities. The 10 CFR Part 50, Appendix B Quality Assurance Program applicable to ANO-1 will be used in conjunction with the OM Code requirements.
Commitments contained in the ANO Quality Assurance Program that are more stringent than the quality assurance requirements referenced by ISTA-1500 shall govern OM Code activities.
Where the OM Code does not address the commitments contained in the Quality Assurance Program, the commitments will be applied to the OM Code activities.
- 3.
ANO-1 Safety Class Piping ANO-1 safety class piping was designed to ANSI B31.7 Class 1, 2, and 3 standards.
In addition, certain systems important to safety that were designed to ANSI B31.1 are currently included within the scope of ASME Section XI and treated as Class 2 or 3.
The snubbers classified as important to safety at ANO-1 are those attached directly to safety class 1, 2 or 3 piping (safety-related) and those attached to non safety-related portions of systems but included in the safety-related stress analysis (safety-significant).
- 4.
Snubber Visual Examination The snubbers listed in Table 1 are the snubbers at ANO-1 subject to periodic visual examination. The table includes all snubbers installed at ANO-1. The examination of snubbers will be performed by qualified examiners using ASME IWA-2213 VT-3 examination methods. The frequency of examination will be in accordance with the duration of an examination interval that meets ISTD.
- 5.
Snubber Operational Readiness Testing (Functional Test)
The snubbers listed in Table 1 are the snubber population at ANO subject to operational readiness testing. The total population of snubbers installed at ANO-1 is included. Each refueling cycle a representative sample of snubbers will be tested using a random sample selection plan in accordance with ISTD-5260. In the event any unacceptable snubbers are found, additional snubbers will be selected for testing during the same refueling cycle to meet the requirements of ISTD-5320.
to 1CAN050805 Page 3 of 8
- 6.
Service Life and Snubber Seal Replacement Program A snubber service life program in accordance with ISTD-6000 has been established for ANO-1. This service life program includes the requirements of the snubber seal replacement program required by ISTD.
- 7.
Proposed use of Code Case OMN-13 Code Case OMN-13 will be utilized in the snubber inspection this interval. OMN-13 allows an extension of the visual examination interval provided additional quality standards are met. Code Case OMN-13 is approved by the NRC in Regulatory Guide 1.192 (June 2003). A change to the ANO-1 TRM is required before OMN-13 can be implemented at ANO-1. This change will be made by the time the fourth inspection interval begins.
- 8.
ANO-1 Snubbers Subject to Examination and Test Table 1 identifies ANO-1 snubbers subject to test and examination. The table identifies each snubber by ANO examination number and piping support number (mark number);
the snubber type, hydraulic (H) or mechanical (M) and model; classification regarding accessibility for examination during power operation; safety-related classification; and system classification.
to 1CAN050805 Page 4 of 8 Table 1 ANO-1 Snubbers Subject to Examination and Test Exam No.
Mark No.
Type Model Accessible Safety-Related System 1001 BS-79 (A)
H LIS 3038RE1 No Safety-Related Reactor Building Spray 1003 CCA-13-H2 H
LIS 3018RC1 No Safety-Related Primary Sample 1004 CCA-13-H3 M
AD 71R No Safety-Related Primary Sample 1005 CCA-13-H4 M
AD 71R No Safety-Related Primary Sample 1006 CCB-1-H16 M
PSA 3 No Safety-Related Decay Heat Removal 1011 HS-3 (A)
M PSA 35 No Safety-Related Main Steam 1012 HS-3 (B)
M PSA 35 No Safety-Related Main Steam 1013 HS-4 M
PSA 35 No Safety-Related Main Steam 1014 HS-5 M
PSA 35 Yes Safety-Related Main Steam 1015 HS-6 (A)
M PSA 35 Yes Safety-Related Main Steam 1016 HS-6 (B)
M PSA 35 Yes Safety-Related Main Steam 1017 HS-7 M
PSA 35 Yes Safety-Related Main Steam 1018 HS-10 M
AD 503 No Safety-Related Pressurizer Relief Valve Discharge 1019 HS-15 M
PSA 35 No Safety-Related Main Steam 1020 HS-16 (A)
M PSA 35 No Safety-Related Main Steam 1021 HS-16 (B)
M PSA 35 No Safety-Related Main Steam 1022 HS-17 (A)
H LIS 3082RC1 No Safety-Related Main Steam 1023 HS-17 (B)
H LIS 3082RC1 No Safety-Related Main Steam 1024 HS-18 M
PSA 35 No Safety-Related Main Steam 1025 HS-19 M
PSA 35 No Safety-Related Main Steam 1026 HS-20 M
PSA 35 No Safety-Related Main Steam 1029 HS-68 M
AD 503 No Safety-Related Pressurizer Relief Valve Discharge 1030 HS-71 M
AD 503 No Safety-Related Pressurizer Relief Valve Discharge 1031 HS-72 M
PSA 3 No Safety-Related Pressurizer Relief Valve Discharge 1032 HS-89 M
AD 1601 No Safety-Related Pressurizer Relief Valve Discharge 1033 HS-91 M
AD 501 No Safety-Related Pressurizer Relief Valve Discharge 1034 HS-93 M
AD 73 No Safety-Related Pressurizer Relief Valve Discharge to 1CAN050805 Page 5 of 8 Table 1 ANO-1 Snubbers Subject to Examination and Test (continued)
Exam No.
Mark No.
Type Model Accessible Safety-Related System 1035 HS-100 H
LIS 305253RM1 No Safety-Related Pressurizer Surge Line 1039 1-MS-118-H4 M
AD 153 Yes Safety-Related Main Steam to EFW Turbine 1041 1-MS-118-H20(A)
M AD 73 Yes Safety-Related Main Steam to EFW Turbine 1042 1-MS-118-H20(B)
M AD 73 Yes Safety-Related Main Steam to EFW Turbine 1045 LW-223-H1 (A)
M PSA 3 No Safety-Related RCS High Point Vent 1046 LW-223-H1 (B)
M PSA 3 No Safety-Related RCS High Point Vent 1053 LW-223-H15 M
AD 71 No Safety-Related RCS High Point Vent 1065 LW-224-H7 M
AD 71R No Safety-Related Pressurizer High Point Vent 1067 LW-224-H13 (A)
M PSA 3 No Safety-Related Pressurizer High Point Vent 1068 LW-224-H13 (B)
M PSA 3 No Safety-Related Pressurizer High Point Vent 1069 LW-224-H14 M
AD 71R No Safety-Related Pressurizer High Point Vent 1074 LW-227-H10 M
AD 71 No Safety-Related RCS High Point Vent 1085 MU-210B H
LIS 301856 No Safety-Related High Pressure Safety Injection 1086 RC-214-H1 (A)
H LIS 3038RC1 No Safety-Related Reactor Vessel High Point Vent 1087 RC-214-H1 (B)
H LIS 3038RC1 No Safety-Related Reactor Vessel High Point Vent 1100 HS-49 H
ITT 2.5x5 Yes Safety-Related Decay Heat Removal 1101 HS-50 H
ITT 2.5x5 Yes Safety-Related Decay Heat Removal 1102 HS-8 H
ITT 2.5x5 No Safety-Related Pressurizer Spray 1106 HS-53 H
ITT 1.5x5 No Safety-Related Pressurizer Spray 1111 HS-58 H
ITT 2.5x5 No Safety-Related Pressurizer Spray 1114 HS-61 H
ITT 1.5x5 No Safety-Related Pressurizer Spray 1115 HS-62 H
ITT 2.5x5 No Safety-Related Pressurizer Spray 1116 HS-63 H
ITT 1.5x5 No Safety-Related Pressurizer Spray 1117 HS-11 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1118 HS-12 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1119 HS-13 H
ITT 1.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1120 HS-14 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1121 HS-66 H
ITT 1.5x5 No Safety-Related Pressurizer Relief Valve Discharge to 1CAN050805 Page 6 of 8 Table 1 ANO-1 Snubbers Subject to Examination and Test (continued)
Exam No.
Mark No.
Type Model Accessible Safety-Related System 1122 HS-67 H
ITT 1.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1123 HS-69 H
ITT 1.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1124 HS-70 H
ITT 1.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1125 HS-88 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1126 HA-1 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1127 HA-2 H
ITT 3.25x5 No Safety-Related Pressurizer Relief Valve Discharge 1128 HB-1 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1129 HB-2 H
ITT 1.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1130 HC-1 H
ITT 2.5x5 No Safety-Related Pressurizer Relief Valve Discharge 1131 HC-2 H
ITT 3.25x5 No Safety-Related Pressurizer Relief Valve Discharge 1132 HS-22 H
ITT 2.5x5 No Safety-Related Main Feedwater 1133 HS-23 H
ITT 2.5x5 No Safety-Related Main Feedwater 1134 HS-24 H
ITT 2.5x5 No Safety-Related Main Feedwater 1135 HS-25 H
ITT 2.5x5 No Safety-Related Main Feedwater 1136 HS-26 H
ITT 2.5x5 No Safety-Related Main Feedwater 1137 HS-27 H
ITT 2.5x5 No Safety-Related Main Feedwater 1138 HS-28 H
ITT 2.5x5 No Safety-Related Main Feedwater 1139 HS-29 H
ITT 2.5x5 No Safety-Related Main Feedwater 1140 HS-30 H
ITT 2.5x5 No Safety-Related Main Feedwater 1141 HS-31 H
ITT 2.5x5 No Safety-Related Main Feedwater 1142 HS-32 H
ITT 2.5x5 No Safety-Related Main Feedwater 1143 HS-33 H
ITT 2.5x5 No Safety-Related Main Feedwater 1144 HS-34 H
ITT 2.5x5 No Safety-Related Main Feedwater 1145 HS-35 H
ITT 2.5x5 No Safety-Related Main Feedwater 1146 HS-36 H
ITT 2.5x5 No Safety-Related Main Feedwater 1147 HS-37 H
ITT 2.5x5 No Safety-Related Main Feedwater 1148 HS-38 H
ITT 2.5x5 No Safety-Related Main Feedwater to 1CAN050805 Page 7 of 8 Table 1 ANO-1 Snubbers Subject to Examination and Test (continued)
Exam No.
Mark No.
Type Model Accessible Safety-Related System 1150 HS-101 H
LIS 305253 No Safety-Related Pressurizer Surge Line 1151 HS-102 H
ITT 2.5x5 No Safety-Related Pressurizer Surge Line 1152 RCP-1A H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1153 RCP-2A H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1154 RCP-1B H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1155 RCP-2B H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1156 RCP-1C H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1157 RCP-2C H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1158 RCP-1D H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1159 RCP-2D H
LIS 31985001 No Safety-Significant Reactor Coolant Pump Motor 1161 HS-40 H
ITT 3.25x5 Yes Safety-Significant Main Feedwater 1163 HS-42 H
ITT 3.25x5 Yes Safety-Significant Main Feedwater 1169 HS-1 H
ITT 2.5x5 Yes Safety-Related Decay Heat Removal 1170 HS-77 (A)
H ITT 5x10 Yes Safety-Significant Main Steam 1171 HS-77 (B)
H ITT 5x10 Yes Safety-Significant Main Steam 1172 HS-78 (A)
H ITT 6x10 Yes Safety-Significant Main Steam 1173 HS-78 (B)
H ITT 6x10 Yes Safety-Significant Main Steam 1174 HS-78 (C)
H ITT 6x10 Yes Safety-Significant Main Steam 1175 HS-78 (D)
H ITT 6x10 Yes Safety-Significant Main Steam 1176 HS-83 (A)
H ITT 6x10 Yes Safety-Significant Main Steam 1177 HS-83 (B)
H ITT 6x10 Yes Safety-Significant Main Steam 1178 HS-84 (A)
H ITT 6x10 Yes Safety-Significant Main Steam 1179 HS-84 (B)
H ITT 6x10 Yes Safety-Significant Main Steam 1180 HS-84 (C)
H ITT 6x10 Yes Safety-Significant Main Steam 1181 HS-84 (D)
H ITT 6x10 Yes Safety-Significant Main Steam 1182 HS-76 H
ITT 4x5 Yes Safety-Significant Main Steam 1183 HS-79(A)
H ITT 5x10 Yes Safety-Significant Main Steam to 1CAN050805 Page 8 of 8 Table 1 ANO-1 Snubbers Subject to Examination and Test (continued)
Exam No.
Mark No.
Type Model Accessible Safety-Related System 1184 HS-79(B)
H ITT 5x10 Yes Safety-Significant Main Steam 1185 HS-80 H
ITT 6x5 Yes Safety-Significant Main Steam 1186 HS-81 H
ITT 6x5 Yes Safety-Significant Main Steam 1187 HS-82 H
ITT 5x5 Yes Safety-Significant Main Steam 1188 HS-85(A)
H ITT 5x10 Yes Safety-Significant Main Steam 1189 HS-85(B)
H ITT 5x10 Yes Safety-Significant Main Steam 1190 HS-86 H
ITT 6x5 Yes Safety-Significant Main Steam 1191 HS-87(A)
H ITT 5x5 Yes Safety-Significant Main Steam 1192 HS-87(B)
H ITT 5x5 Yes Safety-Significant Main Steam 1194 2-MFW-2-H39 M
AD 1601 No Safety-Related Main Feedwater 1196 GCB-1-DH-302 H
LIS 3042RE1 Yes Safety-Related Decay Heat Removal 1197 SA-230-H004 M
PSA 1/2 Yes Safety-Related Primary Sample 1198 MS-242-H007 H
LIS 3018RF2 Yes Safety-Related Main Steam to EFW Turbine 1199 CCA-9-H15 H
LIS 301856 No Safety-Related Pressurizer Auxiliary Spray 1200 1-MS-118-H29 H
LIS 304256 Yes Safety-Related Main Steam to EFW Turbine 1201 1-MS-118-H31 H
LIS 303856 Yes Safety-Related Main Steam to EFW Turbine 1202 1-MS-118-H33 H
LIS 303856 Yes Safety-Related Main Steam to EFW Turbine 1203 1-MS-118-H35 H
LIS 301856 Yes Safety-Related Main Steam to EFW Turbine 1204 MS-255-H1 H
LIS 301856 Yes Safety-Related Main Steam to EFW Turbine
1CAN050805 List of Regulatory Commitments to 1CAN050805 Page 1 of 1 List of Regulatory Commitments The following table identifies those actions committed to by Entergy in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE (Check one)
COMMITMENT ONE-TIME ACTION CONTINUING COMPLIANCE SCHEDULED COMPLETION DATE (If Required)
Revise the ANO-1 TRM Section 5.5.1 relevant to the use of ASME Section XI, Subsection ISTD.
X June 1, 2008 Revise the ANO-1 TRM relevant to the use of Code Case OMN-13 X
June 1, 2008