ML070570302

From kanterella
Jump to navigation Jump to search
AMRM-26, Rev. 0, Aging Management Review of the Main Condenser and MSIV Leakage Pathway.
ML070570302
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 01/11/2006
From: Batch S
Entergy Nuclear Operations, Entergy Nuclear Vermont Yankee
To:
Office of Nuclear Reactor Regulation
O'Hara T, RI/DRS/PSB2, (610) 337-5043
References
AMRM-26, Rev 0
Download: ML070570302 (27)
v • d • e


Text

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 2 of 27 Pathway REVISION DESCRIPTION SHEET Revision Description Pages and/or Sections Revised Number 0 Initial Issue

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 3 of 27 Pathway TABLE OF CONTENTS 1.0 Introduction ........................................................................................................... 4 1.1 Purpose................................................................................................................. 4 1.2 System Description ............................................................................................... 4 1.3 System and Component Intended Functions ........................................................ 4 2.0 Screening .............................................................................................................. 6 3.0 Aging Effects Requiring Management................................................................... 7 3.1 Carbon Steel Components .................................................................................... 7 3.2 Stainless Steel Components ................................................................................. 7 3.3 Main Condenser.................................................................................................... 8 3.4 Sample Cooler (SC-71-34).................................................................................... 8 3.5 Bolting ................................................................................................................... 9 3.6 Operating Experience ........................................................................................... 9 4.0 Demonstration That Aging Effects Will Be Managed .......................................... 10 4.1 Flow-Accelerated Corrosion Program ................................................................. 10 4.2 System Walkdown Program ................................................................................ 11 4.3 Water Chemistry Control - BWR Program........................................................... 11 4.4 Water Chemistry Control - Closed Cooling Water Program ............................... 11 4.5 Time-Limited Aging Analyses.............................................................................. 11 5.0 Summary and Conclusions ................................................................................. 12 6.0 References.......................................................................................................... 13 Attachments .................................................................................................................... 14 Components Subject to AMR .................................................................. 14 Aging Management Review Results ........................................................ 23

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 4 of 27 Pathway 1.0 Introduction 1.1 Purpose This report is part of the aging management review (AMR) of the integrated plant assessment (IPA) performed to extend the operating license of Vermont Yankee Nuclear Power Station (VYNPS). This report demonstrates the effects of aging on main condenser and MSIV leakage pathway passive mechanical components will be adequately managed so that the intended functions will be maintained consistent with the current licensing basis as required by 10 CFR 54.21(a)(3). For additional information on the license renewal project and associated documentation, refer to the License Renewal Project Plan.

The purpose of this report is to demonstrate that aging effects for passive mechanical components will be adequately managed for the period of extended operation associated with license renewal. The approach for demonstrating management of aging effects is to first identify the components that are subject to aging management review in Section 2.0. The next step is to define the aging effects requiring management for the components in Section 3.0.

Section 4.0 then evaluates if existing programs and commitments adequately manage those effects.

Applicable aging effects were determined using EPRI report 1003056 Non-Class 1 Mechanical Implementation Guideline and Mechanical Tools (Ref. 1). This EPRI report provides the bases for identification of aging effects based on specific materials and environments and documents confirmation of the validity of the aging effects through review of industry experience. This aging management review report (AMRR), in conjunction with EPRI report 1003056, documents the identification and evaluation of aging effects requiring management for mechanical components in the main condenser and MSIV leakage pathway.

1.2 System Description This AMRR does not pertain to a defined plant system, but addresses components in the MSIV leakage pathway that are credited with dose reduction under accident conditions for offsite dose and control room habitability considerations. The components covered in the report are from the various in-system codes that interface with the main condenser and MSIV leakage pathway including AOG, AS, C, HPCI, RCIC, SPL, MS, NB, and 101. The components in this AMRR start at the main steam piping at the outlets of the MSIVs and include the piping and components up to and including the main condenser. The boundary includes the turbine stop valves, turbine bypass valves, and drain lines for the main steam lines. (Ref. 2, 14, 15) 1.3 System and Component Intended Functions As described in UFSAR Chapter 11, the power generation objective of the main condenser is to provide a heat sink for main turbine exhaust steam and turbine bypass steam as well as deaeration and storage capacity for condensate. The power generation function of the main steam lines downstream of the main steam isolation valves (MSIVs) is to transport steam to the main turbine and other steam plant components. (Ref. 2)

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 5 of 27 Pathway As described in Technical Evaluation 2003-016 (Ref.14) the main condenser and MSIV leakage pathway is credited with dose reduction under accident conditions for offsite dose and control room habitability considerations. Components evaluated in this AMRR are located in the main condenser and MSIV leakage pathway and have an intended function of providing holdup and plate-out of fission products that may leak through the closed MSIVs. This function supports the use of the alternative source term. (Ref. 14, 15, 17)

The main condenser and MSIV leakage pathway passive mechanical components are not relied on in safety analyses or plant evaluations to perform a function that demonstrates compliance with the Commission's regulations for anticipated transients without scram (10CFR50.62), fire protection (10CFR50.48), environmental qualification (10CFR50.49), pressurized thermal shock (10CFR50.61 - not applicable for BWRs), or station blackout (10CFR50.63). (Ref. 5, 6)

For license renewal, the primary intended function of the MSIV leakage pathway components and piping is to maintain pressure boundary integrity. The main condenser is identified with the component intended function of plateout to be consistent with the terminology utilized in recent BWR license renewal applications. (Ref. 3)

Components outside the boundary of the main condenser and MSIV leakage pathway whose failure could prevent satisfactory accomplishment of safety functions [10 CFR 54.4(a)(2)] that are not reviewed in this AMRR are reviewed in AMRM-30, Aging Management Review of Nonsafety-related Systems and Components Affecting Safety-related Systems. For VYNPS this includes items such as piping, valves, pumps, and support elements outside of the safety class pressure boundary, that are required to be structurally sound in order to maintain the integrity of safety class piping.

Refer to VYNPS Report LRPD-01, System and Structure Scoping Results, for additional information on scoping and intended functions of systems and structures for license renewal.

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 6 of 27 Pathway 2.0 Screening Passive, long-lived components that perform a license renewal component intended function are subject to aging management review. Bolting, condensers, expansion joints, orifices (elements in VY database), heat exchangers (sample cooler), strainers, thermowells, piping, traps, tubing and valve bodies in the main condenser and MSIV leakage pathway are passive, long-lived components.

Components in the main condenser and MSIV leakage pathway that are reviewed in this AMRR begin with the main steam piping at the outlets of the MSIVs and include the piping and components up to and including the turbine stop valves, turbine bypass valves, and the main condenser. The MSIVs and the upstream piping in the Class 1 boundary are reviewed in report AMRM-33, Aging Management Review of the Reactor Coolant System Pressure Boundary.

The MSIV leakage flow path utilizes solenoid valves to bleed air off of actuators so the associated valves achieve the desired position. Pressure boundary integrity is not required for these valves since the associated components fail to the desired position on a loss of air pressure. Therefore, these solenoid valves do not require aging management review. Solenoid valves that maintain the MSIV leakage flow pathway include:

SOV-OG-834A SOV-OG-834B FSO-101-37 LSO-101-38 A through D LSO-101-39 LSO-2-143 Insulation is installed on some equipment in the MSIV leakage pathway. For the evaluation of insulation, refer to LRPD-01, System and Structure Scoping Results, and AMRC-06, Aging Management Review of Bulk Commodities.

A list of the main condenser and MSIV leakage pathway passive mechanical components subject to aging management review is included as Attachment 1. Flow diagrams, highlighted to identify components requiring aging management review, are available as drawings LRA-191156, LRA-191164, LRA-191167, LRA-191169 Sht. 1, LRA-191174 Sht. 1 and LRA-33600-A-00217. (Ref. 10)

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 7 of 27 Pathway 3.0 Aging Effects Requiring Management EPRI report 1003056 is used in this section to identify and evaluate aging effects requiring management. Aging effects that may result in loss of intended functions for non-Class 1 mechanical components are cracking (i.e., crack initiation, crack growth, and through-wall cracking), change in material properties, loss of material, and fouling. For additional information on aging effects, refer to EPRI report 1003056. (Ref. 1) is a list of main condenser and MSIV leakage pathway components that form the pressure boundary. These components require aging management review in this AMRR and are highlighted on the associated LRA drawings.

The following sections document the determination of aging effects requiring management for specific component materials and environments.

3.1 Carbon Steel Components The majority of the piping components and valves are carbon steel1. See Attachment 1 for a list of carbon steel components. These components are exposed to steam or condensate on internal surfaces and indoor air on external surfaces. The internal environment is conservatively considered steam >2700F to bound all components. (Ref. 11, 12)

Loss of material due to microbiologically influenced corrosion (MIC) (when shutdown and at low temperatures) and general, pitting and crevice corrosion is an aging effect requiring management for carbon steel internal surfaces. Loss of material from galvanic corrosion is an aging effect requiring management at interfaces between carbon steel and stainless steel components. Loss of material from erosion or flow-accelerated corrosion at high velocity locations is an aging effect requiring management.

Cracking due to thermal fatigue is an aging effect requiring management for the components that are above the 220°F threshold for carbon steel thermal fatigue.

Loss of material from general corrosion is considered an aging effect requiring management for carbon steel external surfaces exposed to indoor air.

3.2 Stainless Steel Components Stainless steel valves, thermowells and tubing are utilized in the MSIV leakage pressure boundary. See Attachment 1 for a list of stainless steel components. These components are exposed to steam or condensation from steam on internal surfaces and indoor air on external surfaces. The internal environment is conservatively considered steam >2700F to bound all components. (Ref. 11) 1 The plant may upgrade carbon steel piping to chrome moly piping for improved erosion resistance. Chrome moly is still considered a carbon steel in the general license renewal material definitions. Carbon steel valves may be also upgraded to stainless steel in future modifications for improved resistance to erosion. Since stainless steel valves are reviewed in section 3.2, this material and environment combination is already included for this system.

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 8 of 27 Pathway Stainless steel is inherently resistant to general corrosion and erosion including FAC. Stainless steel internal surfaces are susceptible to loss of material due to MIC (when at low temperatures), and pitting and crevice corrosion in the presence of high oxygen levels and contaminants. Therefore, loss of material is an aging effect requiring management for internal wetted surfaces.

Cracking due to stress corrosion and intergranular attack is an aging effect requiring management since component temperature is above the 140°F threshold for these mechanisms in stainless steel.

Cracking due to thermal fatigue is an aging effect requiring management since system temperature may be above the 270°F threshold for stainless steel thermal fatigue.

There is a cast stainless steel valve on the drain line to the condenser. (Ref. 7) Reduction of fracture toughness due to thermal embrittlement is not an aging effect requiring management for this cast austenitic stainless steel (CASS) component since the operating temperature and design temperature of this drain line near the condenser remains below the 482°F threshold for stainless steel thermal embrittlement.

There are no aging effects requiring management for external stainless steel surfaces due to the inherent resistance of stainless steel to aging effects when not wetted or exposed to aggressive chemicals. Insulation, where used is free of contaminants that could cause cracking of stainless steel. (Ref. 13) 3.3 Main Condenser The main condenser is a carbon steel shell with both stainless steel and copper alloy (admiralty) tubes. There is a rubber expansion joint between the upper and lower steam inlet sections.

The condenser shells and the tubes external surfaces have an internal environment of steam and condensate from the exhaust of the turbines. The internal surfaces of the tubes and the water boxes are exposed to raw water. (Ref. 2, 10)

The intended post-accident function of dose reduction for the condenser is assured through normal plant operation which requires condenser pressure boundary integrity to maintain a vacuum. A significant loss of vacuum would indicate degradation in the pressure boundary integrity of the condenser and require corrective action prior to loss of intended function.

Therefore, no aging effects require management since normal operation of the plant assures the intended function can be accomplished. This position is consistent with recent BWR license renewal applications with regard to treatment of aging effects on the main condenser. (Ref. 3) 3.4 Sample Cooler (SC-71-34)

Sample cooler SC-71-34 is a stainless steel tube sample cooler with steam on the inside surface of the tube and treated water (RBCCW) on the external surface. Only the tube is being reviewed since only the tube integrity is required to support the MSIV leakage function. The tubes only intended function is pressure boundary (heat transfer is not an intended function required to contain MSIV leakage). The tubes internal environment is conservatively considered steam >2700F. (Ref. 2, 10, 16)

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 9 of 27 Pathway Loss of material from pitting, crevice corrosion and MIC is an aging effect requiring management for tube internal and external surfaces. Wear is not expected in a small single tube heat exchanger that is used for intermittent sampling.

Cracking due to stress corrosion and intergranular attack is an aging effect requiring management since component temperature is above the 140°F threshold for these mechanisms in stainless steel.

Cracking due to thermal fatigue is an aging effect requiring management since the steam temperature is above the 270°F threshold for stainless steel thermal fatigue.

3.5 Bolting Pressure retaining bolting for components reviewed in this report may be carbon steel or stainless steel exposed to indoor air.

Loss of material from general corrosion is considered an aging effect requiring management for carbon steel bolting exposed to indoor air. Loss of material is not an aging effect requiring management for stainless steel bolting that is not wetted.

3.6 Operating Experience The review of site-specific operating experience and recent industry operating experience completed in VYNPS Report LRPD-05, Operating Experience Review Results, did not identify aging effects applicable to the main condenser and MSIV leakage pathway passive mechanical components not addressed in this aging management review report. (Ref. 9)

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 10 of 27 Pathway 4.0 Demonstration That Aging Effects Will Be Managed The components of the main condenser and MSIV leakage pathway that are subject to aging management review were described in Section 2.0. For those components, Section 3.0 documented the determination of aging effects requiring management. The aging management review is completed by demonstrating that existing programs, when continued into the period of extended operation, can manage the aging effects identified in Section 3.0. No further action is required for license renewal when the evaluation of an existing program demonstrates that it is adequate to manage the aging effect such that corrective action may be taken prior to loss of the intended functions. Alternately, if existing programs cannot be shown to manage the aging effects for the period of extended operation, then action will be proposed to augment existing or create new programs to manage the identified effects of aging.

Demonstration for the purposes of this license renewal technical evaluation is accomplished by establishing a clear relationship among

1) the components under review,
2) the aging effects on these items caused by the material-environment-stress combinations which, if undetected, could result in loss of the intended function such that the pathway could not perform its function(s) within the scope of license renewal in the period of extended operation, and
3) the credited aging management programs whose actions serve to preserve the pathways intended function(s) for the period of extended operation. lists component types and identifies the aging effects requiring management for each material and environment combination. The Flow-Accelerated Corrosion Program, System Walkdown Program, Water Chemistry Control - BWR Program and Water Chemistry Control-Closed Cooling Water Program in combination will manage the effects of aging, thereby precluding loss of the intended functions. Sections 4.1 through 4.4 provide the clear relationship between the component, the aging effect, and the aging management program actions which preserve the intended functions for the period of extended operation. Section 4.5 identifies applicable time-limited aging analyses. For a comprehensive review of programs credited for license renewal of VYNPS and a demonstration of how these programs will manage aging effects, see VYNPS Report LRPD-02, Aging Management Program Evaluation Results.

(Ref. 8) 4.1 Flow-Accelerated Corrosion Program The Flow-Accelerated Corrosion Program determines locations likely to experience loss of material from flow-accelerated corrosion and monitors these locations for wall thickness changes. This program manages loss of material from internal surfaces of carbon steel components.

This program applies to component types indicated on Attachment 2. For additional information on this program, see VYNPS Report LRPD-02, Aging Management Program Evaluation Results. (Ref. 8)

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 11 of 27 Pathway 4.2 System Walkdown Program Under the System Walkdown Program, visual inspections are conducted to manage aging effects on components. For the main condenser and MSIV leakage pathway, the System Walkdown Program manages loss of material for external carbon steel components by visual inspection of external surfaces.

This program applies to component types indicated on Attachment 2. For additional information on this program, see VYNPS Report LRPD-02, Aging Management Program Evaluation Results. (Ref. 8) 4.3 Water Chemistry Control - BWR Program To manage loss of material on carbon steel components and loss of material and cracking (from SCC) on stainless steel components in the main condenser and MSIV leakage pathway, levels of contaminants are minimized by the Water Chemistry Control - BWR Program. The Water Chemistry Control - One-Time Inspection Program utilizes inspections or non-destructive evaluations of representative samples to verify that the Water Chemistry Control - BWR Program has been effective at managing these aging effects.

This program applies to component types indicated on Attachment 2. For additional information on this program and the Water Chemistry Control - One-Time Inspection Program, see VYNPS Report LRPD-02, Aging Management Program Evaluation Results. (Ref. 8) 4.4 Water Chemistry Control - Closed Cooling Water Program The Water Chemistry Control - Closed Cooling Water Program manages loss of material of stainless steel sample cooler tube external surface that is cooled by RBCCW by minimizing levels of contaminants in the water. The Water Chemistry Control - One-Time Inspection Program utilizes inspections or non-destructive evaluations of representative samples to verify that the Water Chemistry Control - Closed Cooling Water Program has been effective in managing this aging effect.

For additional information on this program and the Water Chemistry Control - One-Time Inspection Program, see VYNPS Report LRPD-02, Aging Management Program Evaluation Results. (Ref. 8) 4.5 Time-Limited Aging Analyses Metal fatigue is a TLAA applicable to portions of this MSIV and condenser leakage pathway subjected to elevated temperatures.

See VYNPS Reports LRPD-03, TLAA and Exemption Evaluation Results, and LRPD-04, TLAA

- Mechanical Fatigue, for further review of time-limited aging analyses.

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 12 of 27 Pathway 5.0 Summary and Conclusions The following aging management programs address the aging effects requiring management for the main condenser and MSIV leakage pathway.

  • Flow-Accelerated Corrosion Program
  • System Walkdown Program
  • Water Chemistry Control - BWR Program

In conclusion, programs described in Section 4.0 will provide reasonable assurance that the effects of aging on the main condenser and MSIV leakage pathway will be managed such that intended functions will be maintained consistent with the current licensing basis throughout the period of extended operation.

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Page 13 of 27 Pathway 6.0 References

1. Non-Class 1 Mechanical Implementation Guideline and Mechanical Tools, Revision 3, EPRI, Palo Alto, CA: 2001. 1003056
2. VYNPS Updated Final Safety Analysis Report (UFSAR) Revision 19-1, Chapter 11 and Section 14.6
3. BNF Units 1, 2, and 3 License Renewal Application
4. ENN-DC-167, Classification of Structures, Systems and Components
5. Document SADBD, Topical Design Basis Document for Safety Analysis, Rev. 4
6. VYNPP Appendix R Safe Shutdown Capability Analysis (SSCA), Rev. 7, 6/26/04
7. Minor Modification MM 2003-026
8. VYNPS Report LRPD-02, Aging Management Program Evaluation Results.
9. VYNPS Report LRPD-05, Operating Experience Review Results
10. Drawings G-191156, Rev. 37, Main, Extraction, & Auxiliary Steam Systems G-191164, Rev. 23, Sampling System, Sheet 1 G-191167, Rev. 75, Nuclear Boiler G-191169, Sht. 1, Rev. 47, High Pressure Coolant Injection System G-191174, Sht. 1, Rev. 42 Reactor Core Isolation Cooling System 33600-A00217, Rev. 22, Turbine Bldg. Area Off Gas Modification
11. Drawing B-191261, Rev. 6, Instrument Installation Details
12. BWR QC-10, Ebasco Piping Specification, 3/15/70
13. VYNP-III-I-1, Ebasco Insulation Specification, Rev. 2, 12/23/1969
14. VYDC 2003-016 Alternate Source Term
15. VY-RPT-05-0008, ALT Drain Paths and Seismic Isolation Boundaries for AST
16. Email on SC-71-34 Material (Stainless Steel) from Paul Rainey
17. TAC Number MC0253, Amendment 223, Issuance of Amendment RE: Alternate Source Term, March 29, 2005

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 14 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: AIR - INDOOR (EXTERNAL)

Comp ID Comp Type Comp Name Material MSIV LEAKAGE CS bolting MSIV LEAKAGE CS BOLTING carbon steel BOLTING MSIV LEAKAGE SS bolting MSIV LEAKAGE SS BOLTING stainless steel BOLTING ENVIRONMENT: RAW WATER (INTERNAL)

Comp ID Comp Type Comp Name Material CONDENSER copper alloy>15%

condenser CONDENSER ADMIRALITY TUBES ADMIRALITY TUBES zinc (inhibited)

CONDENSER SS condenser CONDENSER SS TUBES stainless steel TUBES ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material CONDENSER expansion joint CONDENSER EXPANSION JOINT elastomer EXPANSION JOINT CSS-30 valve body MAIN STEAM SAMPLE VALVE carbon steel E-6-1A condenser NORTH MAIN CONDENSER carbon steel E-6-1B condenser SOUTH MAIN CONDENSER carbon steel FCV-101-34 valve body SJAE STEAM STRAINER S62-2 BLOWDOWN carbon steel FCV-101-36 valve body SJAE STEAM TO MAIN CONTROL VALVE PCV-1 carbon steel FCV-101-36A valve body SJAE STEAM TO EMER. BYPASS VALVE PCV-35 carbon steel FCV-101-37 valve body SJAE STEAM FROM MAIN CONT. VALVE PCV-1 carbon steel FE-101-9 orifice STEAM JET AIR EJECTOR AUXILLARY STEAM SUPPLY FLOW SENSOR carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 15 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material M, E, AS LEVEL CONTROL VALVE LINE A STRAINER BLOWDOWN, STM DRN TRAP 60-2A BYPASS AND LCV-101-38A valve body carbon steel BLOWDOWN FOR MS LEADS TO TURB FLOW DAI G-191156 M,E & AS LEVEL CONTROL VALVE LINE B STRAINER BLOWDOWN, STM DRN TRAP 60-2A BYPASS AND LCV-101-38B valve body carbon steel BLOWDOWN FOR MS LEADS TO TURB, FLOW DIAG G-191156 M,E & AS LEVEL CONTROL VALVE LINE C STRAINER BLOWDOWN, STM DRN TRAP 60-2C BYPASS AND LCV-101-38C valve body carbon steel BLOWDOWN FOR MS LEADS TO TURB, FLOW DIA G-191156 M,E & AS LEVEL CONTROL VALVE LINE D STRAINER BLOWDOWN, STM DRN TRAP 60-2D BYPASS AND LCV-101-38D valve body carbon steel BLOWDOWN FOR MS LEADS TO TURB, FLOW DIA G-191156 LCV-101-39 valve body SJAE STEAM HDR TRAP ST62-1 BYP AND BLDWN carbon steel LCV-2-143 valve body REACTOR BUILDING STEAM DRAIN VALVE carbon steel MS-113-1A steam trap STEAM TRAP FOR HS-190 carbon steel MSIV LEAKAGE piping MSIV LEAKAGE PIPING carbon steel PIPING MSIV LEAKAGE CS thermowell MSIV LEAKAGE THERMOWELLS carbon steel THERMOWELLS MSIV LEAKAGE SS thermowell MSIV LEAKAGE THERMOWELLS stainless steel THERMOWELLS MSIV LEAKAGE tubing MSIV LEAKAGE TUBING stainless steel TUBING MS-SS-24 valve body SECONDARY ISOLATION VALVE A MAIN STEAM LINE stainless steel MS-SS-25 valve body ISOLATION VALVE A MAIN STEAM LINE (SP#37) stainless steel Check valve in the AOG steam reducing station dischage line steam trap (MS-115-1A) drain line (3/4"-MS-189-OG-779 valve body carbon steel D3). Being added by MM 2003-026.

OG-785 valve body AOG HAND OPERATED VALVE carbon steel OG-785A valve body GATE VALVE carbon steel OG-786 valve body AOG HAND OPERATED VALVE carbon steel OG-9066 valve body AOG HAND OPERATED VALVE carbon steel OG-9068 valve body PRE HEAT STEAM LINE VALVE -FED FROM MCC-11C-2G carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 16 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material OG-9070 valve body AOG HAND OPERATED VALVE carbon steel OG-9072 valve body AOG STEAM ISOLATION carbon steel PCV-101-1 valve body AIR EJECT STEAM SUPPLY carbon steel PCV-101-35 valve body SJAE EMERGENCY STEAM BYPASS carbon steel MAIN STEAM PRESSURE CONTROL VALVE FLOW DIAG: G-191164.OPERATOR MFG. CONTROL PCV-109-34 valve body stainless steel COMPONENTS, INC.

PRV-71-34 valve body SAMPLING SYSTEM RELIEF VALVES TB 248' SAMPLE SINK stainless steel PRV-OG-834A valve body DILUTION STEAM TO AOG RECOMBINERS carbon steel PRV-OG-834B valve body DILUTION STEAM TO AOG RECOMBINER carbon steel S-60-2A strainer housing MS "Y" STRAINERS carbon steel S-60-2B strainer housing MS "Y" STRAINERS carbon steel S-60-2C strainer housing MS "Y" STRAINERS carbon steel S-60-2D strainer housing MS carbon steel S-60-4 strainer housing MS "Y" STRAINERS carbon steel S-62-2 strainer housing AS STRAINER carbon steel S-62-3 strainer housing AS Y STRAINER carbon steel heat exchanger SC-71-34 MAIN STEAM CONDUCTIVITY SAMPLE stainless steel (tubes)

ST-60-2A steam trap MS INVERTED TRAP carbon steel ST-60-2B steam trap 1" THERMOSTATIC STEAM TRAP FOR MS LEAD "B" TURB BLDG NORTH carbon steel ST-60-2C steam trap MS INVERTED TRAP carbon steel ST-60-2D steam trap MS INVERTED TRAP carbon steel ST-60-3 steam trap MS INVERTED TRAP carbon steel ST-62-1 steam trap AS INVERTED BUCKET TRAPS carbon steel V13-150B valve body GLOBE VALVE STEAM LINE DRAIN carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 17 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material V2-31 valve body NBS GLOBE VALVE carbon steel V2-33 valve body NBS GLOBE VALVE carbon steel V2-78 valve body MAIN STEAM LINE DRAIN VALVE -FED FROM MCC-7A-3G carbon steel V2-79 valve body MAIN STEAM LINE ORIFICE/BYPASS DRAIN VALVE -FED FROM MCC-7A-4G carbon steel V2-931 valve body VALVE carbon steel V2-931A valve body VALVE carbon steel V2-932A valve body VALVE carbon steel V2-932B valve body VALVE carbon steel V23-160B valve body GLOBE VALVE STEAM LINE DRAIN carbon steel V60-10 valve body STEAM SEAL REGULATOR BYPASS -FED FROM MCC-6B-5F carbon steel V60-144 valve body FIRST GLOBE VALVE FOR STEAM VALVE PRESSURE TRANSMITTER PT-101-5 carbon steel V60-145 valve body SECOND GLOBE VALVE FOR STEAM VALVE PRESSURE TRANSMITTER PT-101-5 carbon steel V60-17A valve body MS CHECK VALVE carbon steel V60-17B valve body MS CHECK VALVE carbon steel V60-17C valve body MS CHECK VALVE carbon steel V60-17D valve body MS CHECK VALVE carbon steel V60-18A valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE A SAMPLE TURBINE BUILDING carbon steel V60-18B valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE B SAMPLE TURBINE BUILDING carbon steel V60-18C valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE C SAMPLE TURBINE BUILDING carbon steel V60-18D valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE D SAMPLE TURBINE BUILDING carbon steel V60-19 valve body STEAM TRAP ST60-3 OUTLET ISOLATION carbon steel V60-19A valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE A SAMPLE ROOT TURBINE BUILDING carbon steel V60-19B valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE B SAMPLE ROOT TURBINE BUILDING carbon steel V60-19C valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE C SAMPLE ROOT TURBINE BUILDING carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 18 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material V60-19D valve body MAIN STEAM SAMPLE VALVE MAIN STEAM LINE D SAMPLE ROOT TURBINE BUILDING carbon steel V60-20 valve body MS CHECK VALVE carbon steel V60-21A valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE A SAMPLE TURBINE BUILDING carbon steel V60-21B valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE B SAMPLE TURBINE BUILDING carbon steel V60-21C valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE C SAMPLE TURBINE BUILDING carbon steel V60-21D valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE D SAMPLE TURBINE BUILDING carbon steel V60-22A valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE A SAMPLE TURBINE BUILDING carbon steel V60-22B valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE B SAMPLE TURBINE BUILDING carbon steel V60-22C valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE C SAMPLE TURBINE BUILDING carbon steel V60-22D valve body MAIN STEAM SAMPLE LINE VALVE MAIN STEAM LINE D SAMPLE TURBINE BUILDING carbon steel V60-23 valve body INLET SUPPLY VALVE FROM 3" MSD-3 TO STEAM TRAP (ST-60-3) carbon steel 1" RESTRICTOR VALVE WITH 0.69" PORT ON INLET SUPPLY FROM MISC DRAINS TO STEAM TRAP (ST-V60-24 valve body carbon steel 60-3)

V60-25 valve body ISOLATION VALVE TO STEAM TRAP ST-60-3 carbon steel V60-2A valve body STEAM LINE DRAIN VALVE -FED FROM MCC-6B-8C carbon steel V60-2B valve body STEAM LINE DRAIN VALVE -FED FROM MCC-6B-8F carbon steel V60-2C valve body STEAM LINE DRAIN VALVE -FED FROM MCC-6B-8J carbon steel V60-2D valve body STEAM LINE DRAIN VALVE -FED FROM MCC-6B-8M carbon steel V60-3A-STOP valve body MAIN STEAM TURBINE STOP VALVE carbon steel V60-3B-STOP valve body MAIN STEAM TURBINE STOP VALVE carbon steel V60-3C-STOP valve body MAIN STEAM TURBINE STOP VALVE carbon steel V60-3D-STOP valve body MAIN STEAM TURBINE STOP VALVE carbon steel V60-4 valve body STEAM LINE DRAIN VALVE -FED FROM MCC-6B-7F carbon steel V60-5A valve body MAIN STEAM CONTROL VALVE 1 BEFORE SEAT DRAIN -FED FROM MCC-6B-9C carbon steel V60-5B valve body MAIN STEAM CONTROL VALVE 2 BEFORE SEAT DRAIN VALVE -FED FROM MCC-6B-9F carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 19 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material V60-5C valve body MAIN STEAM CONTROL VALVE #3 BEFORE SEAT DRAIN VALVE -FED FROM MCC-6B-9J carbon steel V60-5D valve body MAIN STEAM CONTROL VALVE #4 BEFORE SEAT DRAIN -FED FROM MCC-6B-9M carbon steel V60-6 valve body STEAM FEED TO STEAM SEAL REG. -FED FROM MCC-6B-5C carbon steel V60-935 valve body VALVE PRESSURE AVERAGING MANIFOLD TO PX-26 TURBINE BUILDING carbon steel ISOLATION VALVE IN LINE FROM MAIN STEAM LINE PRESSURE AVERAGING MANIFOLD TO PX-26 V60-936 valve body carbon steel TURBINE BUILDING ISOLATION VALVE IN LINE FROM MAIN STEAM LINE PRESSURE AVERAGING MANIFOLD TO MPR V60-937 valve body carbon steel TURBINE BUILDING V60-937A valve body FIRST ISOLATION VALVE IN MPR SENSING LINE. INSTALLED PER MM 98-0047/JO 99-016. carbon steel V60-937B valve body SECOND ISOLATION VALVE IN MPR SENSING LINE carbon steel V60-937C valve body THIRD ISOLATION VALVE IN MPR SENSING LINE. INSTALLED PER MM 98-047/JO 99-016. carbon steel V60-937D valve body TEST CONNECTION ISOLATION VALVE IN MPR SENSING LINE INSTALLED PER MM 98-047/JO 99-016. carbon steel ISOLATION VALVE IN LINE FROM MAIN STEAM LINE PRESSURE AVERAGING MANIFOLD TO EPR V60-938 valve body carbon steel TURBINE BUILDING V60-938A valve body FIRST ISOLATION VALVE IN EPR SENSING LINE. INSTALLED PER MM 98-047/JO 99-016 carbon steel V60-938B valve body SECOND ISOLATION VALVE IN EPR SENSING LINE. INSTALLED PER MM 98-047/JO 99-016 carbon steel V60-938C valve body TEST CONNECTION ISOLATION ON EPR SENSING LINE. INSTALLED PER MM 98-047/JO 99-016 carbon steel ISOLATION VALVE IN LINE FROM MAIN STEAM PRESSURE AVERAGING MANIFOLD TO PT-2 (CRP 9-7)

V60-939 valve body carbon steel HEADER ISOLATION PRESSURE AVERAGING MANIFOLD VALVES PRESSURE AVERAGING MANIFOLD TO PT-3 (COMPUTER)

V60-944 valve body carbon steel HEADER ISOLATION V60-948A valve body VALVE PS-134A DRAIN HEADER ISOLATION carbon steel V60-948B valve body VALVE PS-134B DRAIN HEADER ISOLATION carbon steel V60-948C valve body VALVE PS-134C DRAIN HEADER ISOLATION carbon steel V60-948D valve body VALVE PS-134D DRAIN HEADER ISOLATION carbon steel V60-949A valve body VALVE PS-134A DRAIN HEADER ISOLATION carbon steel V60-949B valve body VALVE PS-134B DRAIN HEADER ISOLATION carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 20 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material V60-949C valve body VALVE PS-134 DRAIN HEADER ISOLATION carbon steel V60-949D valve body VALVE PS-134D DRAIN HEADER ISOLATION carbon steel V60-950A valve body VALVE REMOVED FROM "A" STEAM LINE PS-134A ROOT HEADER ISOLATION carbon steel V60-950B valve body VALVE REMOVED FROM "A" STEAM LINE PS-134B ROOT HEADER ISOLATION carbon steel V60-950C valve body VALVE REMOVED FROM "A" STEAM LINE PS-134C ROOT HEADER ISOLATION carbon steel V60-950D valve body VALVE REMOVED FROM "A" STEAM LINE PS-134D ROOT HEADER ISOLATION carbon steel V60-951A valve body VALVE REMOVED FROM "A" STEAM LINE PS-134A ISOL HEADER ISOLATION carbon steel V60-951B valve body VALVE REMOVED FROM "A" STEAM LINE PS-134B ISOL HEADER ISOLATION carbon steel V60-951C valve body VALVE REMOVED FROM "A" STEAM LINE PS-134C ISOL HEADER ISOLATION carbon steel V60-951D valve body VALVE REMOVED FROM "A" STEAM LINE PS-134D ISOL HEADER ISOLATION carbon steel V60-955A valve body VALVE LS-101-38A INLET FROM A STM LINE HEADER ISOLATION carbon steel V60-955B valve body VALVE LS-101-38B INLET FROM B STM LINE HEADER ISOLATION carbon steel V60-955C valve body VALVE LS-101-38C INLET FROM C STM LINE HEADER ISOLATION carbon steel V60-955D valve body VALVE LS-101-38D INLET FROM D STM LINE HEADER ISOLATION carbon steel V60-956A valve body VALVE LS-101-38A INLET FROM A STM LINE HEADER ISOLATION carbon steel V60-956B valve body VALVE LS-101-38B INLET FROM B STM LINE HEADER ISOLATION carbon steel V60-956C valve body VALVE LS-101-38C INLET FROM C STM LINE HEADER ISOLATION carbon steel V60-956D valve body VALVE LS-101-38D INLET FROM D STM LINE HEADER ISOLATION carbon steel V60-957A valve body VALVE LS-101-38A DRAIN HEADER ISOLATION carbon steel V60-957B valve body VALVE LS-101-38B DRAIN HEADER ISOLATION carbon steel V60-957C valve body VALVE LS-101-38C DRAIN HEADER ISOLATION carbon steel V60-957D valve body VALVE LS-101-38D DRAIN HEADER ISOLATION carbon steel V60-958A valve body VALVE LS-101-38A DRAIN HEADER ISOLATION carbon steel V60-958B valve body VALVE LS-101-38B DRAIN HEADER ISOLATION carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 21 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM > 270°F (INTERNAL)

Comp ID Comp Type Comp Name Material V60-958C valve body VALVE LS-101-38C DRAIN HEADER ISOLATION carbon steel V60-958D valve body VALVE LS-1-1-38D DRAIN HEADER ISOLATION carbon steel V62-1 valve body AS GATE VALVE carbon steel V62-12 valve body VENT CONNECTION/TEST GAGE TURB BLDG 246' SJAE ROOM carbon steel V62-12A valve body VENT CONNECTION/TEST GAGE TURB BLDG 246' SJAE ROOM carbon steel V62-2 valve body GLOBE VALVE carbon steel V62-3 valve body AS CHECK VALVE carbon steel V62-7 valve body AUXILIARY STEAM VALVE carbon steel V62-7A valve body AUXILIARY STEAM VALVE carbon steel V62-7B valve body AUXILIARY STEAM VALVE carbon steel V62-8 valve body GLOBE VALVE carbon steel V62-9 valve body SJAE/AFT/COND HI LEVEL ALARM LS-40 TURB BLDG 246' SJAE ROOM carbon steel Z-1-1A valve body TURBINE BYPASS VALVE CHEST Z-1-1A1 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1A3 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1A5 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1A7 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1A9 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1B valve body TURBINE BYPASS VALVE CHEST Z-1-1B10 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1B2 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1B4 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1B6 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel Z-1-1B8 valve body MS BYPASS VALVE TURB BYPASS VALVE carbon steel

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 22 of 27 Attachment 1 - Components Subject to AMR ENVIRONMENT: STEAM >270F (EXTERNAL)

Comp ID Comp Type Comp Name Material CONDENSER copper alloy>15%

condenser CONDENSER ADMIRALITY TUBES ADMIRALITY TUBES zinc (inhibited)

CONDENSER SS condenser CONDENSER SS TUBES stainless steel TUBES ENVIRONMENT: TREATED WATER (EXTERNAL)

Comp ID Comp Type Comp Name Material heat exchanger SC-71-34 MAIN STEAM CONDUCTIVITY SAMPLE stainless steel (tubes)

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 23 of 27 Attachment 2 - Aging Management Review Results Intended Aging Effect Requiring Aging Management Component Type Material Environment Function Management Programs Bolting Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Stainless steel Air - indoor (ext) None None Condenser Plateout Carbon steel Air - indoor (ext) None1 None1 Steam > 270°f (int) None1 None1 Copper alloy>15% zinc Raw water (int) None1 None1 (inhibited)

Steam >270f (ext) None1 None1 Stainless steel Raw water (int) None1 None1 Steam >270f (ext) None1 None1 Orifice Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Steam > 270°f (int) Cracking-fatigue Metal fatigue TLAA

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 24 of 27 Attachment 2 - Aging Management Review Results Intended Aging Effect Requiring Aging Management Component Type Material Environment Function Management Programs Orifice Pressure boundary Carbon steel Steam > 270°f (int) Loss of material Water chemistry control - BWR Expansion joint Plateout Elastomer Air - indoor (ext) None1 None1 Steam > 270°f (int) None1 None1 Heat exchanger Pressure boundary Stainless steel Steam > 270°f (int) Cracking Water chemistry control - BWR (tubes)

Cracking-fatigue Metal fatigue TLAA Loss of material Water chemistry control - BWR Water chemistry control -

Treated water (ext) Loss of material closed cooling water Piping Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Steam > 270°f (int) Cracking-fatigue Metal fatigue TLAA Loss of material Flow accelerated corrosion

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 25 of 27 Attachment 2 - Aging Management Review Results Intended Aging Effect Requiring Aging Management Component Type Material Environment Function Management Programs Piping Pressure boundary Carbon steel Steam > 270°f (int) Loss of material Water chemistry control - BWR Strainer housing Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Steam > 270°f (int) Cracking-fatigue Metal fatigue TLAA Loss of material Water chemistry control - BWR Thermowell Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Loss of material Water chemistry control - BWR Steam > 270°f (int)

Cracking-fatigue Metal fatigue TLAA Stainless steel Air - indoor (ext) None None Loss of material Water chemistry control - BWR Steam > 270°f (int)

Cracking-fatigue Metal fatigue TLAA Cracking Water chemistry control - BWR Steam trap Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Cracking-fatigue Metal fatigue TLAA Steam > 270°f (int)

Loss of material Flow accelerated corrosion Water chemistry control - BWR

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 26 of 27 Attachment 2 - Aging Management Review Results Intended Aging Effect Requiring Aging Management Component Type Material Environment Function Management Programs Tubing Pressure boundary Stainless steel Air - indoor (ext) None None Steam > 270°f (int) Cracking Water chemistry control - BWR Cracking-fatigue Metal fatigue TLAA Loss of material Water chemistry control - BWR Valve body Pressure boundary Carbon steel Air - indoor (ext) Loss of material System walkdown Steam > 270°f (int) Cracking-fatigue Metal fatigue TLAA Loss of material Flow accelerated corrosion Water chemistry control - BWR Valve body Pressure boundary Stainless steel Air - indoor (ext) None None Steam > 270°f (int) Cracking Water chemistry control - BWR Cracking-fatigue Metal fatigue TLAA Loss of material Water chemistry control - BWR

VYNPS License Renewal Project AMRM-26 Revision 0 Aging Management Review of the Main Condenser and MSIV Leakage Pathway System Page 27 of 27 Attachment 2 - Aging Management Review Results Footnotes 1

Normal main condenser operation requires condenser pressure boundary integrity to be maintained. Therefore, the post accident function of dose reduction is assured. No aging management program is required for the main condenser since normal operation verifies its pressure boundary integrity.

Retrieved from "https://kanterella.com/w/index.php?title=ML070570302&oldid=2180872"