Text

Vermont Yankee July 2008 Evidentiary Hearing - Applicant Exhibit E4-32 VT, Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review
	ML082530351
Person / Time
Site:	Vermont Yankee
Issue date:	10/05/2005
From:	Fitzpatrick J; FitzPatrick
To:	; NRC/SECY/RAS
	SECY RAS
References
	06-849-03-LR, 50-271-LR, Entergy-Applicant-E4-32-VY, RAS M-346 VY-RPT-05-00012, Rev. 0
	Download: ML082530351 (43)
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4 -% is N. - 3 44 (0 FORM ENN-DC-1 47 ATTACHMENT 9.1 ENGINEERING REPORT COVER SHEET FORM ENN-DC-147 ATTACHMENT 9.1 ENGINEERING REPORT COVER SHEET Engineering Report No. VY-RPT-05-00012 Rev. 0 Page 1 of 42 ENTERGY NUCLEAR NORTHEAST

=7Entergy Engineering Report Cover Sheet Engineering Report

Title:

VERMONT YANKEE PIPING FLOW ACCELERATED CORROSION INSPECTION PROGRAM - FAC SUSCEPTIBILITY REVIEW Engineering Report Type:

New [ Revision 0 Cancelled El Superseded 1z Applicable Site(s)

IP1LF1 P2 EII IP3 [- JAF [E] PNPS E- VY [

Quality-Related: Z Yes R] No Prepared by: James C. Fitzpatrick Date: 10/v/"

Responsible Enginee (PriNN me/Sign)

- Reviewed by: o5*"

Thomas M. O'Connor Date: toI*

- Reviewer (Print Name/Signr-

Reviewed by: N/A Date: N/A Authorized Nuclear In-service Inspector (ANII)

Approved by: Scott D. (Print am/Sgn Date: 1 . -

Supervisor (Print Name/Sign)

Multiple Site Review (10)

Site Design Verifier/Reviewer (Print Name/Sign) Supervisor (Print Name/Sign) Date N/A N/A N/A

For ASME Section XI Code Program plans per ENN-DC-120, if required.

- This Report does not interpret design, nor are the results used for design inputto.a design change..

Therefore Design Verification per ENN-DC-134 is not required. Only atech`nical review is performed.

VY-RPT-05-00012 Revision 0 Page1o4 bS1, -

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DOCKETED USNRC August 12, 2008 (11:00am)

OFFICE OF SECRETARY RULEMAKINGS AND U.S. NUCLEAR REGULATORY COMMISSIqN ADJUDICATIONS STAFF IntheMaiterof :% 4riy .Ju 1 - Ier', J . LLL nlocklit NO..O- 2Q1'-z-kcial Exhibit No. JE q -,2..-'J UFFERED by" nVLicens Intervenor

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review RECORD OF REVISIONS Engineering Report No: VY-RPT-05-00012, "Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review" Revision Description of Change Reason For Change No.

Original Report: Converts previous Vermont Yankee Susceptibility LO-VTYLO-2003-00327-CA6, Evaluation into EN N-DC-147 format LO-VTYLO-2004-00399-CA1, and includes piping and system LO-VTYLO-2005-00030-CA1 1, 0 changes made since May 15, 2000. LO-VTYLO-2005-00215-CAl This revision incorporates operation under Nobel Metal Hydrogen Water Chemistry (NMHWC) and the increased flows from 120% Extended Power Uprate (EPU).

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review REVISION

SUMMARY

Revision 0:

Information in this report was originally contained in a Vermont Yankee FAC Inspection Program document entitled "FAC Susceptible Piping Identification" Revision 0, dated May 15, 2000. This report formalizes the previous VY document per the requirements of ENN-DC-147. Also piping system operational, configuration, and material changes made at Vermont Yankee since May 15, 2000 are incorporated. These include operation under Nobel Metals Hydrogen Water Chemistry, piping changes to various feedwater heater replacements, and piping replacements due to previous through wall leaks. This revision considers the effects of the increased flow rates and revised Heat Balance Diagrams resulting from a proposed 120% Extended Power Uprate (EPU).

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Vermont Yankee Pipina Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE OF CONTENTS Section, Description Page No.

ENGINEERING REPORT COVER SHEET (ENN-DC-147 ATT.9.i) 1 RECORD OF REVISIONS ...-........................................................ 2 REVISION

SUMMARY

.......................................................... .... 3 TABLE OF CONTENTS ...................................... 4

1.0 INTRODUCTION

....... ................................... 5 2.0 P UR P O S E ............................... ........................ I........................ 5 3.0 SCOPE OF REVIEW ................................. 5 4.0 INPUT DATA ...................................................................... 6 5.0 EVALUATION CRITERIA......... ............................ 7 6.0 ASSUMPTIONS ........................................... 9 7.0 SUSCEPTIBILITY REVIEW METHODOLOGY ...................... 10 8.0 RESULTS / CONCLUSIONS................. . .............. 11 9.0 REFERENC ES ... .... ........................... I....................... 12 Table 1: Plant Flow Diagrams & Equipment Drawings Reviewed '14 Table 2: Summary of Line by Line Screening., 16 Page 4of42 VY-RPT-05-00012 Revision 00 VY-RPT-05-00012 Revision Page 4 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review

1.0 INTRODUCTION

An evaluation was performed to ensure all plant piping lines which are susceptible to damage from Flow Accelerated Corrosion (FAC) are included in the scope of the Vermont Yankee Piping FAC Inspection Program.

The evaluation documented herein identifies the plant systems and piping lines considered, the assumptions applied, sources of data, and drawing references. The evaluation considers both the current Vermont Yankee design and operating conditions and the effects of a proposed 120%

Extended Power Uprate. The criteria used to screen the piping for susceptibility to FAC was developed by EPRI in [Ref. 4].

VY will adopt the Entergy Northeast Standard FAC Program Procedure, ENN-DC-315, "Flow Accelerated Corrosion Program" [Ref.'5]. The existing VY Program Procedure, No. PP 7028 [Ref.

3] will be superseded. Information in this report was originally contained in a Vermont Yankee FAC Inspection Program document entitled "FAC Susceptible Piping Identification" Revision 0, dated May 15, 2000. This'report formalizes the previous VY document per the requirements of procedure ENN-DC-147.

Piping system operational, configuration, and material changes made at Vermont Yankee since May 15, 2000 are incorporated. These are listed in section 4.0. This revision considers the effects of the increased flow rates and revised Heat Balance Diagrams resulting from a proposed 120%

Extended Power Uprate (EPU).

2.0 PURPOSE The purpose of this document is to provide a single, comprehensive, source to identify all piping systems or portions of systems, which could be susceptible to damage caused by flow accelerated corrosion (FAC). This document will be periodically reviewed and revised as required to reflect changes in plant operation and configuration [Ref. 5, Section 5.14].

3.0 SCOPE OF REVIEW To insure that all susceptible piping is included in the scope of the Piping FAC Inspection Program, all plant piping systems shown on plant flow diagrams and equipment drawings will be screened using the criteria listed in Section 5.0. Piping provided with vendor supplied equipment, which is generally not shown on plant flow diagrams (i.e., turbine Gland Seal Supply lines) is also included.

All feedwater heater shells at Vermont Yankee have now been replaced with FAC resistant materials [Ref. 24]. No shell wall thickness inspections are anticipated to be required for the remaining term of the plant operating license. FAC susceptible equipment other than feedwater heater shells may also be identified during this review although inspection of equipment is currently outside the scope of the Piping FAC Inspection Program.

The plant flow diagrams and drawings reviewed are listed in Table 1.

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review 4.0 INPUT DATA 4.1 Piping Design Data The piping systems at VY are shown on the drawings (Flow Diagrams for Mechanical Systems) listed in Table 1. Each flow diagram contains a "Piping Line List" which contains for each line: the line number, line size, piping schedule, material, the design temperature and pressure, and a reference to the original Ebasco Piping Specification, [Ref. 6]. There is no separate controlled line list at Vermont Yankee. The flow diagrams are the controlled design information.

Piping and fitting materials installed by Ebasco, the original plant Architect /Engineer are identified by piping class (i.e. CS-1 or LAS-2), as shown on the Flow Diagrams. These designations refer to sections in the Ebasco Piping Specification [Ref. 6] which give detailed material requirements for the respective piping class. Equipment manufacturer data is used if available.

4.2 Operating Conditions Operating temperatures and pressures for process steam piping are shown on the plant Heat Balance diagrams. Prior to RFO 24 (Spring 2004), normal operating conditions at current licensed thermal power (CLTP) are taken from Drawing No. 5920-11399, Sh.2 of 19, Rev.1, reference 7. The HP turbine rotor was replaced and the steam path was modified during RFO 24. The revised Heat Balance Diagram for CLTP is drawing No. 5920-13297 Sht.6, referencel 9. The Heat Balance Diagram for the 120% Extended Power Uprate (EPU) including the HP Turbine replacement is shown on drawing No. 5920-13297 Sht. 4, [Ref. 20].

An additional Heat Balance for both CLTP and 122% EPU using the PEPSE code for evaluation of balance of plant equipment (BOP) was developed by Stone &Webster, reference 18. These Heat Balance Diagrams contain more detailed modeling for some BOP piping.

VY has continuously operated under Nobel Metals Hydrogen Water Chemistry since November 2003. Current plant power level is 100% CLTP. Accession testing to 120% CLTP (EPU) operation is expected to start in 2006.

Reference 20 (120% EPU) conditions will be used for the FAC susceptibility screening. If actual operating temperatures are not available, the conservative end of the design range with respect to FAC is used.

4.3 Piping and Equipment Design Changes Plant design changes that affect FAC Susceptible systems installed at VY since May 15, 2000 as documented in the plant Flow Diagrams listed in Table 1.

VYDC-2003-002 - HP Feedwater Heater Replacements

VYDC 2003-006 - High Pressure Turbine Replacement

VYDC 2003-016 - Alternate Souse Term (AST)

MM 2000 Hydrogen Water Chemistry Outage Modifications

MM 2000-51 Main Steam Drain Modifications for Small HELB

MM 2003 Condensate Demineralizer Filtered Bypass

MM 2003-26 Alternate Source Term (AST) Component Modifications

MM 2003-43 Min Turbine Cross-around Pipe Relief Valves Discharge Piping Mods

MM 2003-26 Alternate Source Term (AST) Level Control Valve Replacements Revision 00 Page 6o142 VY-RPT-05-00012 Revision VY-RPT-05-00012 Page 6 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review 5.0 EVALUATION CRITERIA There are thousands of piping components (pipe and fittings) in service at VY, most of which do not operate under conditions where FAC is a concern. FAC occurs in piping with single-phase water and two-phase water/steam flow regimes under certain thermodynamic and chemistry conditions. In order to focus attention and resources effectively, those components where FAC is not a concern shall be eliminated from the scope of the FAC inspection program. To accomplish this, the exclusion criteria developed by EPRI contained in Section 4.2.2 of NSAC 202L-R2,

[Ref.4], will be used.

Portions of piping systems which meet certain exclusion criteria, may or may not be excluded from the program scope. Examples include piping with no flow connecting directly to the condenser which has experienced leak-by from normally closed valves. The piping excluded by the criteria below could be susceptible to damage from other corrosion or degradation mechanisms. These include; cavitation, erosion, liquid impingement erosion, inter-granular stress corrosion cracking (IGSCC), microbiologically-influenced corrosion (MIC), and solid particle erosion.

All plant systems are considered within the scope of the VY Piping FAC Inspection Program unless excluded (screened out) by one of the following criteria [Ref. 4 Section 4.2.2]:

5.1 Exclusion Criteria 5.1.1 Stainless Steel or Low Alloy Steel Piping Systems of stainless steel piping or low alloy steel piping with nominal chromium content equal to or greater than 1-1/4%. This exclusion pertains only to complete piping systems constructed of FAC resistant alloys. Ifsome components in a high alloy line are carbon steel (valves) then the line shall not be excluded. In lines with specific components or sections of piping replaced with FAC resistant materials, the entire line should be identified as susceptible. Note that high chromium materials do not necessarily protect against other damage mechanisms, especially cavitation and liquid impingement erosion. Ifthe specific damage mechanism which prompted previous material replacement has not been identified, then the system should not automatically be excluded from the 'program scope.

Piping locations with upstream FAC resistant material replacements will be noted for future inspection due to the "Leading Edge Effect" at the chrome material - carbon steel material boundary.

5.1.2 Superheated Steam Systems Superheated steam systems with no moisture content regardless of temperature or pressure levels. However drains, traps, and other potentially high-moisture content lines from super-heated steam systems should not be excluded automatically.

5.1.3 High Dissolved Oxygen or Raw Water Systems Systems with high levels of dissolved oxygen (oxygen > 1000. ppb), such as Service Water, Circulating Water, and Fire Protection.

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I Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review 5.1.4 Sinqle Phase Systems With Temperature Below 175F.

EPRI recommends exclusion of single phase systems with temperature below 200F (low temperature). However, if measurable wear is found in nearby piping operating slightly above 200F, EPRI recommends that the systems exclusion be reconsidered.

A temperature of 175F will be used for conservatism.

5.1.5 Systems With No Flow, or Which is in Use Less Than 2% of Pant Operating Time Systems with no flow, or those that operate less than 2% of plant operating time or single phase systems that operate with temperature > 200F less than 2% of plant operating time. However, if the actual operating conditions of the system can not be confirmed (potentially leaking valves, etc.) or ifthe service is severe (fluid flashing),

the system should not be excluded based on operation time alone.

This includes normally closed small bore equipment vents, drains, and level control instrument lines which are not connected to the condenser. These lines will not be accounted for in Table 2.

5.1.6 Pipinq Which Carries Fluids Other Than water or Wet Steam The VY Piping FAC Inspection Program applies only to piping carrying water or wet steam. Therefore non-water systems such as Instrument Air or Turbine Lube Oil Systems are excluded.

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review 6.0 ASSUMPTIONS 6.1 EPRI report NSAC-2021-R2, [Ref.4] describes systems susceptible to FAC as those made of carbon or low alloy steel which contain flowing water or wet steam. Process instrumentation and sampling lines at Vermont Yankee are typically constructed of stainless steel tubing, fittings, and valves. Instrumentation lines are typically considered as negligible flow and therefore not susceptible to FAC. These lines are not shown in Table 2.

6.2 All small bore equipment and piping low point drain and vent lines with normally closed manual valves are'considered as non-susceptible to FAC based on the usage criteria unless otherwise noted.

6.3 Emergency bypass lines to the condenser will be included on a case by case basis.

Thermal Performance Monitoring instruments on lines connecting to the main condenser are used to identify possible leakage by normally closed valves.

6.4 If the actual operating time of a system cannot be confirmed, or if the system operates under severe conditions relative to FAC, then that system should not be excluded from FAC inspection program based on time alone.

6.5 Large bore piping will be considered ais-3 inch nominal diameter and larger. Small bore piping will be considered as 2-1/2 inch nominal diameter and smaller. Some small bore lines may include short segments of 3 inch pipe. These short segments of 3 inch pipe will be considered as small bore for classification of the line.

6.6 For the purpose of determining system susceptibility, system operating temperatures are assumed to be less than or equal to design temperatures and system operating pressures are assumed to be less than or equal to design pressures at all times.

Design values are used if the operating values from the Heat ,Balance Diagram (reference 20) are not available.

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review 7.0 SUSCEPTIBILITY REVIEW METHODOLOGY For each System or Line contained on the drawings listed in Table 1 document the piping size and material, design temperature and process fluid.

Determine line operating conditions at full power EPU (120% CLTP) from available documentation.

See Heat Balance Diagrams, references 18 & 20). Valve'lineups are taken from System Operating Procedures, references 10 to 13, and 21.

Review all plant piping shown on the drawings listed in Table 1 against the exclusion criteria listed in Section 5 above. Document in Table 2 whether it is susceptible to FAC or not, and how it is addressed if it is susceptible.

All piping determined to be susceptible to FAC is considered within the scope of the program.

Piping determined to be resistant to FAC, or the fluid environment is not conducive to FAC, is considered outside the scope of the program.

Each System or and/or Line in each system is assigned to one of the following categories:

Non-Susceptible (NS):

These systems/lines are not susceptible to FAC per the exclusion criteria contained in Section 5.0.

Susceptible-Modeled in CHECWORKS (SMC):

These large bore systems/lines are susceptible to FAC and the fluid flow regime is appropriate for modeling using CHECWORKS.

Susceptible- Not Modeled (SNM):

These large bore systems/lines are susceptible to FAC and are not appropriate for modeling using CHECWORKS due to pipe size, or uncertain thermodynamic conditions.

Susceptible Small Bore (SSB):

These small bore lines are generally not modeled using CHECWORKS. The entire line is considered susceptible. However, only specific locations on these lines are inspected. The locations inspected are included'in a separate small bore piping database (Ref.14]. Long term trending and inspection of small bore piping is generally not performed at VY. Ifsmall bore piping and components show significant wear the entire line is generally replaced with FAC resistant materials.

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review 8.0 RESULTS/CONCLUSIONS All piping line shown on the plant P&IDs listed in Table 1, have been reviewed using the

,methodology from Section 7.0 and the exclusion criteria from Section 5.0. The results of the susceptibility screening are shown in Table 2. Each line, or group of lines, has been classified into one of four categories:

NS: Non-Susceptible to FAC

SMC: Susceptible-Modeled in CHECWORKS

SNM: Susceptible- Not Modeled

SSB: Susceptible Small Bore Table 2 is essentially an inventory of every line shown on the plant P&IDs, excluding normally closed small bore vents, drains, instrument taps, and test connections.

Non Susceptible piping is considered outside the scope of the FAC inspection program.

Large bore piping, both SMC and SNM, is currently monitored for FAC damage under PP 7028.

VY will adopt the Entergy Northeast Standard FAC Program Procedure, ENN-DC-315, "Flow Accelerated Corrosion Program" [Ref. 5]. PP 7028 [Ref. 3] will be superseded.

Inspections of susceptible small bore piping, SSB, are prioritized and documented using a separate Small Bore Data base documented in ENVY Engineering Report No. VY-RPT-05-00013 Rev.0, "Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - Small Bore Piping Component Inspection Database". [Ref.14].

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review

9.0 REFERENCES

1. V.Y. Piping Flow Accelerated Corrosion (FAC) Inspection Program Manual, Revision 2a, November 2,1999. [Note Historical Reference Superseded by PP 7028, Reference 3]

2. V.Y. Procedure, "Piping Flow Accelerated Corrosion Inspection", DP 4023, Rev. 2, March 20, 1998.

[Note Historical Reference Superseded by PP 7028, Reference 3]

3. V.Y. Program Procedure, "Piping Flow Accelerated Corrosion Inspection Program", PP7028, Original, Issued LPC 1, 12/06/01.

4. EPRI Report "Recommendations for an Effective Flow Accelerated Corrosion Program", NSAC-202L-R2, Final Report, April 1999, Electric Power Research Institute.

5. Entergy Northeast Standard FAC Program Procedure, ENN-DC-315, "Flow Accelerated Corrosion Program" Revision 0.

6. Ebasco Specification for Piping, Piping Components, Hangers and Supports for Station Piping Systems BWR QC-10, Revised 2/1/70.

7. VY Plant Heat Balance Diagram for 100% rated Power Drawing No. 5920-11399, Sh.2 of 19, Rev.1, "Vermont Yankee Thermal Kit: Turbine S/N 170X383. [Note: Historical Reference, Superseded by Reference 19]

8. Steam Tables - Properties of Saturated and Superheated Steam, ABB Combustion Engineering (reprint of 1967 ASME Steam Tables).

9. Vermont Yankee Piping FAC Inspection Program, Small Bore Piping Component Selection Review, Revision 1 December 6,1999. (Includes Small Bore Data Base). [Note: Historical Reference, Superseded by Reference 14]

10. VY Procedure RP 2170, Condensate System, Revision 24, LPC 1, (Appendices A & B - Valve Lineup).

11. VY Procedure OP 2113, Main &Auxiliary Steam, Revision 20, (Appendix A - Valve Lineup).

12. VY Procedure RP 2171, Condensate Demineralizer System, Revision 30.

13. VY Procedure OP 2172, Feedwater System, Revision 23, LPC No.3

14. ENVY Engineering Report No. VY-RPT-05-00013 Rev.0, 'Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - Small Bore Piping Component Inspection Database"

15. Engineering Request ER. 04-1409 ,"Extended Power Uprate Master Design Change" 1 6. GE Project Task Report for ENVY Extended Power Uprate Task T01 00: Reactor Heat Balance, GE-NE-0000-001 0-0197-01 Revision 0 December 2002.

17. GE Project Task Report for ENVY Extended Power Uprate Task T0700: Turbine-Generator Performance Evaluation, GE-NE-0000-0007-5277-01 Revision 0 June 2003.

18. Entergy / Vermont Yankee Nuclear Power Station PEPSE Heat Balances for Extended Power Uprate, Rev.0 dated March 26, 2003, by Stone &Webster VY-RPT-05-00012-Revision 0 Page 12 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review

19. Entergy - Vermont Yankee #1 Turbine 170x383 Heat Balance Diagram for HP ADSP at 100%

Current Licensed Thermal Power Conditions (1593 MWt), VY Drawing No. 5920-13297, Sh.6, Rev.0, "Thermal Kit for HP Steam Path Replacement".

20. Entergy - Vermont Yankee #1 Turbine 170x383 Heat Balance Diagram forHP ADSP / 120% CTP Uprate Rated Power Conditions (1912 MWt), VY Drawing No. 5920-13297, Sh.4, Rev.0, 'Thermal Kit for HP Steam Path Replacement'.

21. VY Procedure OP 0105 Reactor Operations, Revision 11, LPC 5

22. GEK 17999A, Turbine Bypass Valves and System Description GE Power Systems, March1991.

23. VY-RPT-05-00008, Revision 0, ALT Drain Paths and Seismic Isolation Boundaries for AST

24. VYDC-2003-002 - HP Feedwater Heater Replacements

25. VY Drawings VYI-FDW-Part 22A, VYI-FDW-Part 22B, 5920-10841. Feedwater flush lines partial Replacement drawings for PAR 87-12.

26. INPO Operating Experience OE 16287," Reactor Feed Pump Turbine Sealing Steam Small-Bore Piping not Included in the Flow Accelerated Corrosion Program" Revision 00 Page 13of42 VY-RPT-05-00012 Revision Page 13 of 42

Vermont Yankee Pipin, Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 1: Plant Flow Diagrams & Equipment Drawings Reviewed Drawing Revision Title No. (Note 1)

G191156 36 Flow Diagram - Main, Extraction, &Auxiliary Steam Systems G191157 Sht.1 59 Flow Diagram - Condensate, Feedwater, and Air Evacuation Systems G191157 Sht.2 05 Flow Diagram - Condensate, Feedwater, and Air Evacuation Systems G191157 Sht.3 03 Flow Diagram - Condensate, Feedwater, and Air Evacuation Systems G191158 27 Flow Diagram - Heater Drain &Vent Systems G(191159 Sht.1 72 Flow Diagram Service Water System G191159 Sht.2 84 Flow Diagram Service Water System G191159 Sht.3 37 Flow Diagram RCW Cooling Water System 03191159 Sht.4 35 Flow Diagram TCW Cooling Water System G191159 Sht.5 16 Flow Diagram Recirc. Pump Cooling Water G191159 Sht.6 09 Flow Diagram AOG Closed Cooling Water G191160 Sht.1 30 Flow Diagram Instrument Air System G191160 Sht.2 17 Flow Diagram Instrument Air System G0191160 Sht.3 28 Flow Diagram Instrument Air System G(191160 Sht.4 19 Flow Diagram Instrument Air System G1 91160 Sht.5 20 Flow Diagram Service Air System G191160 Sht.6 10 Flow Diagram Service Air System G191160 Sht.7 22 Flow Diagram Diesel Starting Air System G191160 Sht.8 03 Flow Diagram Service Air System G191161 22 Flow Diagram Makeup Water Treatment System G191162 Sht.1 19 Flow Diagram Misc. Systems Turbine & Recirculation Lube Oil G191162 Sht.2 25 Flow Diagram Misc. Systems Fuel Oil 0G191162 Sht.3 22 Flow Diagram Misc. Systems Exhaust Stack & Off Gas System G191162 Sht.4 10 Gas Control Piping Diagram G191162 Sht.5 02 Arrangement of Shaft Sealing System G191162 Sht.6 01 P& ID H2 System G191162 Sht 7 05 Stator Winding Cooling Water System G191163 Sht.1 39 Flow Diagram Fire Protection System - Inner Loop G1 91163 Sht.2 13 Flow Diagram Fire Protection System - Outer Loop G191163 Sht.3 06 Flow Diagram Fire Protection System - Low Pressure C02 G191163 Sht.4 00 Flow Diagram Fire Protection System - Control Room Bldg. Cable Vault, East & West Switchgear Rooms GG191164 23 Flow Diagram Sampling System Sheet 1 G1 91165 44 Flow Diagram Sampling System Sheet 2 G191166 44 Flow Diagram Circulating Water &Associated Systems G191167 74 Flow Diagram - Nuclear Boiler G191168 43 Flow Diagram - Core Spray G191169 Sht.1 47 Flow Diagram - High Pressure Coolant Injection System G191169 Sht.2 43 Flow Diagram - High Pressure Coolant Injection System G191170 48 Flow Diagram - Control Rod Drive Hydraulic System G 191171 25 Flow Diagram - Standby Liquid Control System G191172 64 Flow Diagram - Residual Heat Removal System G191173 Sht.1 36 Flow Diagram - Fuel Pool Cooling & Cleanup System G191173 Sht.2 08 Flow Diagram - Fuel Pool Cooling & Cleanup System G191174 Sht.1 42 Flow Diagram - Reactor Core Isolation Cooling System G191174 Sht.2 23 Flow Diagram - Reactor Core Isolation Cooling System G191175 Sht.1 69 Flow Diagram Primary Containment & Atmospheric Control System G191175 Sht.2 19 Nitrogen Supply System - Flow Diagram G191176 Sht.1 41 Flow Diagram - Condensate and Demin. Water Transfer System Page 14 of 42 VY-RPT-05-00012 Revision 00 Page 14 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 1: Plant Flow Diagrams & Equipment Drawings Reviewed - continued Drawing Revision Title No. (Note 1)

G191176 Sht.2 42 Flow Diagram - Condensate and Demin. Water Transfer System G191177 Sht.1 39 Flow Diagram - Radwaste Systems G191177 Sht.2 22 Flow Diagram - Radwaste Systems G191177 Sht.3 21 Flow Diagram - Radwaste Systems G191177 Sht.4 16 Flow Diagram - Radwaste Systems G191178 Sht. 1 49 Flow Diagram - Reactor Water Clean-Up System G191178 Sht.2 21 Flow Diagram - Reactor Water Clean-Up System G191236 09 HVAC-Flow Diagram Radwaste Building G191237 Sht. 1 46 HVAC-Flow Diagram Turbine, Service, and Control Room Bldgs.

G191237 Sht.2 10 HVAC-Flow Diagram Turbine, Service, and Control Room Bldgs.

G191238 33 HVAC-Flow Diagram Reactor Building G191254 35 HVAC-Heating Flow Diagram & Boiler Room Layout.

G191267 Sht.1 30 Flow Diagram - Nuclear Boiler Vessel Instrumentation G191267 Sht.2 05 Flow Diagram - Nuclear Boiler Vessel Instrumentation G191274 36 Flow Diagram - Condensate Demineralizer System G191280 11 Potable Water - Flow Diagram VY-E-75-001 11 Flow Diagram A. 0. G.

VY-E-75-002 19 Engineering Flow Diagram Containment Atmosphere Dilution System (CAD) 33600-A-00202 04 Process Flow Diagram Off Gas System 33600-A-00207 22 Engineering Flow Diagram Train A Recombiner Area 33600-A-00208 20 Engineering Flow Diagram Train B Recombiner Area 33600-A-00209 17 Engineering Flow Diagram Train A Off Gas Drying 33600-A-0021 0 16 Engineering Flow Diagram Train B Off Gas Drying 33600-A-0021 1 21 Engineering Flow Diagram Charcoal Off Gas System 33600-A-00213 13 Engineering Flow Diagram H20 Chiller System (GCH-100-1A & B) 33600-A-00216 11 Utility Flow Diagram Steam ReHeat Coils 33600-A-00217 21 Engineering Flow Diagram Turbine Bldg. Area Off Gas Modification 5920-00568 04 Moisture Removal Provisions & Extraction Diagram 5920-00870 11 HPCI Turbine Oil Piping Diagram 5920-01068 03 Flow Diagram Instrument Air Dryer ORIAD Model 4127 5920-11015 00 Flow Diagram (Atlas-Copco Station Air Compressors) 5920-12598 02 Diagram of Steam Seal Piping (GE No.735E758) 5920-12857 Sh.1 00 Flow Diagram Hydrogen & Process Air Injection Module 5920-12857 Sh.2 00 Flow Diagram Hydrogen & Process Air Injection Module 5920-12858 00 Flow Diagram Off Gas Monitor Panel Notes:

1. Revision as of 6/16/05 including pending drawing changes documented on VY Drawing Pending Change List dated 6/16/05 located on \Vysharedl\public\Controlled Doc.

VY-RPT-05-00012 Revision 0 Page 15 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening

~xciusion ~usceptioiiiw iwtes Drawing System Line No(s). Description Fluid Oper. Material FIow at -ull (xclusion Susceptibility Notes Temp Power (Note 1) Classification No. (Note 2)

(F) Operation G191156 Main Steam 18-MS-1 A to -1D MS from V2-86A-D to Turbine Sat 540. CS-5 Continuous SMC Note 8 Stop & Control valves. Steam G191156 Main Steam 20-MS by GE MS leads from S.&C. valves Sat 540 CS Continuous SMC toi H.P Turbine. Steam G191156 Main Steam 16-MS-2A to -2D MS from 18-MS to Turbine Sat <540 CS-5 Static- N.C. U NS Flow during Bypass Valve Chests Z-1-1A Steam Valves. startup &

&Z-1-1B transients.

Note 8 G191156 Main Steam 3", 3-1/2", 5"-MS MS from MS-1A to V60-6 & Sat <540 CS-5 Static- N.C. U NS V60-6 N.C. @

to SSR (GE-SSRM) SSR (SSR Supply) Steam Valve. >70% power (Ref. 21),

Note 8 G191156 Main Steam 5-MS (GE-SSRM) Steam Seal Regulator Sat <540 CS-5 Normally U NS Ref. 11 &21 to SSR US/DS of V60-10 Bypass Steam Closed G191156 Main Steam 8,12-MS (GE- Steam Seal Regulator Unload Sat <540 CS-5 Normally U NS Ref. 11 to SSR SSRM) US/DS of Steam Closed V60-9 I G191156 Main Steam 10-MS-3A to -3J Bypass lines from Z1-1A & Sat <540 CS-5 Warming SNM Note 7 Bypass ZI-11B to condenser Steam Steam G191156 Turbine Cross 36" CAR A to D CAR from H.P. turbine to Sat <435 CS* Continuous SNM *GE copper Around M.S. Steam bearing alloy G191156 Turbine Cross 30" CAR A,C, & D CAR from M.S. to L.P.turbine. Sat <435 LAS Continuous NS A691-P22 Around Steam I G191156 Turbine Cross 30" CAR B CAR from M.S. to L.P.turbine. Sat <435 CS Continuous SNM B line is Around Steam I carbon steel G191156 Extraction 12-ES-lA & -1B ES from H.P.Turb to No.1 Steam <440 LAS-2 Continuous M NS Note 3 Steam FDW Htrs.

G191156 Extraction 10-ES-2A &-2B ES from LP 7'n stg to No. 2 Steam <400 LAS-1 Continuous M NS Note 3 Steam FDW Htrs.

G191156 Extraction 20-ES-3A &-3B ES from LP 8m stg to No. 3 Steam <370 LAS-1 Continuous M NS Note 3 Steam - FDW Htrs. I G191156 Extraction 20,30-ES-4A &- ES from LP 10mdstg to No. 4 Steam <300 LAS-1 Continuous M NS Note 3 Steam 4B FDW Htrs.

G191156 Extraction 26/20-ES-5A to ES from LP 12'" stg to No. 5 Steam <300 LAS-1 Continuous M NS Note 3 Steam 5H FDW Htrs.

G191156 Extraction 12-ES-6 SSR CV-1-IA to E-5-1A Steam <300. CS Intermittent SNM 1992 Steam - Inspections G191156 Extraction 3-ES-7A & -7B Bypass to conden. from 30- Steam <300 LAS-1 Static - N.C. M NS I Steam I ES-4A/B to valve LCV-4NB I_ I__ Valve I I Page 16of42 VY-RPT-05-00012 Revision 00 Page 16 of 42

,I ., I I

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TARI : 9.

0- immar% i-d I in ,-. I **n, IAf~ ~auopontikiliti, ~p~aaninru

. ... .~

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r~ ~ y .

Drawing System Line No(s). Description - Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191156 Extraction 3-ES-8A & -8B Bypass to conden. Steam <300 LAS-1 Static - N.C. M NS SB Loc. 120 &

Steam Downstream valve LCV-4AIB Valve 121.

Note 3.

G191156 Extraction 2-ES-9A & -9B Bypass to conden. From 20- Steam <370 LAS-1 Static - N.C. M NS SB Loc. 63 &

Steam 2-ES-10A & -10B ES-3ANB US & DS of valve Valve 65.

LCV-3AIB Note 3.

G191156 Extraction 2-ES-11A & -11B Bypass to conden. From 10- Steam <400. LAS-1 Static - N.C. M NS SB Loc. 62 &

Steam 2-ES-12A & -12B ES-2A/B US & DS of valve Valve 64.

LCV-2NB Note 3.

G191156, Extraction 8" 13'& stage ES 13&n stage ES line USof RO Steam <300 LAS Continuous M NS Note 12.

5920-0568 Steam into condenser 61-13 A to H in condenser G191156 Turbine 18", 20"-SRV-1 to From CIV to Main Condenser Steam <435 CS-2 Static - N.C. U NS Steam Relief SRV-4 Nozzle 48 Valve Valves G191156 SSR Relief 10-SRV-5A& 5B SSR RV to Main Condenser Steam <540 CS-1 Static - N.C. U NS Valves 10-SRV-6A& 68 Nozzles 36 & 37 Valve G191156 Aux. Steam 2 SS-1 Piping at FE-9 Steam 540 316-SS Continuous M NS Note 8 G191156 Aux. Steam 3,2-1/2,2-AS 1 Steam Supply from MS-1 A to Steam 540 CS-5 Continuous SSB Note 8 SJAE G191156 Aux. Steam 2-1/2-AS-2A & -2B FCV-1 N1 B to 1st Stg. Inter- Steam 540 CS-5 Continuous SSB Note 8 condenser G191156 Aux. Steam 3-AS-3 PCV-1 to 2" Stg. Steam 540 CS-5 Continuous SSB Note 8 Aftercondenser G191156 Aux. Steam 3-AS-4 Piping at FCV-36A & FCV-35 Steam 540 CS-5 Continuous SSB Note 8 G191156 Aux. Steam 2" & 2-1/2" AS Piping US/DS of FCV-2A & - Steam 540 CS-5 Continuous SSB 28 to after condenser G191156 Aux. Steam 1" & 2"-AS US & DS of LCV-101-39 & Steam <540 CS-5 Intermittent SS SB Location ST-62-1 Nos. 66 & 67, Note 8 G191156 Aux. Steam 2" -MSD-465 Drain from FVC-34 to Steam <540 CS-5 Intermittent SSB SB Location condenser at Conn. 68 - I Nos. 68,69 G191156 Aux. Steam 1" & 1-1/2"-AS US & DS of LCV-101-40 & Steam <540 CS-s Intermittent SSB SB Location.

ST-62-2 to main condenser Nos. 70,71,72 Conn.69.

G191156 Off Gas 2 & 2-1/2-HS-190 Steam Supply Steam 540 CS Continuous SSB Note 8 MS-7B to A.O.G G191156 Main Steam 3-MSD-4 MS drain DS of ST60-3& Water/ <540 CS-S Intermittent SSB SB Location Drains LCV-143 in RX Bldg. At Steam No. 5, Note 8 condenser Nozzle 47 VY-RPT-05-00012 Revision 0 Page 17 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191156 Main Steam 1,2-1/2 US/DS of Turbine Stop Valve Inlet Water/ 540 CS-5 Start- up / SSB SB Location Drains V60-2A thru -2D drains Steam Normally Nos. 14,15, Closed 16,17, Note 8 G191156 Main Steam 2-1/2-MSD-6 Combined TSV inlet drains .Water/ <540 CS-5 Start- up/ SSB SB Location Drains from V60-4 to condenser Steam Normally Nos. 18,19,20 Nozzle 33. Closed G191156 Main Steam 6-MSD-7A to 7D MS Drip Leg off MS-7A to Water / 540 CS-5 Intermittent SNM Note 8 Drains MS-7D - steam (drip leg)

G191156 Main Steam 1 ,& 2-1/2 MSD-7A MS Line Drip Leg Steam Water / 540 CS-5 Intermittent SSB SB Location Drains to 7D D.S. of ST- Traps steam Nos. 6,8,10,12, 60-2A to -2D Note 8 G191156 Main Steam 1,2, & 2-1/2 MSD- MS Line Drip Leg Level Water/ 540 CS-5 Intermittent SSB SB Location Drains 8A-D at LCVs- control valves steam Nos. 7,9,11,13, 38A-D, MS-956-A Note 8 G191156 Main Steam 8-MSD-9 MS Line Drip Leg collector to Water / <540 CS-5 Intermittent SNM SB Location Drains condenser steam Nos. 7,9,11,13, Note 8 G191156 Main Steam 1 -MSD U.S./D.S. Turbine Control Valve Inlet Water / 540 CS-5 Start- up/ SSB SB Location Drains of Valves MS-5A Drain steam Normally Nos.

to MS-5D Closed 21,22,23,24 G191156 Main Steam 2" D.S. V60-5A- - TCV inlet drains from V60- Water/ <540 CS-5 Start- up / SSB SB Location Drains 5D to condenser 5A-D to condenser Nozzle 34 steam Normally Nos. 25,26,27 Closed G191156. Main Steam 1" & 2" MSD, U.S. HP Leads drains to V60-12 Water / 540 CS-5 Continuous SSB Drains V60-12 / R.O.60-1 and R.O.60-1 steam G191156 Main Steam 1'" & 2" MSD, D.S. HP Leads drain from V60-12 Water / <540 SS & Continuous M NS SB Location Drains V60-12/R.O.60-1 and R.O.60-1 to stub at Steam A335- Nos. 28,29,30 to stub at Cond. A condenser nozzle 35 P11 Note 4.

G191156 Main Steam 2" MSD, D.S. Stub at condenser Nozzle 35 Water/ <540 CS Continuous SSB Note 10 Drains V60-12 / R.O.60-1 D.S. of V60-12 and R.O.60-1 Steam I G191156 SSH 1" LPDR SSH Front End Low Point Water/ <540 CS Continuous SSB drain to condenser nozzle 61 Steam G191156 SSH 12" & 1-1/2" drains '"& 1-1/2" drains SR60-1A, Water/ <540 CS Static - N.C. U NS 1 B, 2A, 2B to condenser Steam Valve Nozzle 62 G191157 Condensate 20-C-1,20-C-2 Condensate Pump suction Water 105 CS-1 Continuous T NS Note 3, Ref 20 Sht.1 24,30,36-C3 from Hotwell 24-C-4, 24-C-5 VY-RPT-05-00012 Revision 0 Page 18 of 42

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191 157 Condensate 18-C-6, 18-C-7 Condensate Pump discharge Water 105 CS-2 Continuous T NS Note 3, Ref 20 Sht.1 18,24-C-8 to SJAE inter-condensers G191157 Condensate 12-C-10, 12-C-11 SJAE inter- condenser inlet & Water 106 CS-2 Continuous T NS Note 3, Ref 20 Sht.1 12-C-13, 12-C-14 outlet.

G191157 Condensate 12-C-9, 12-C-12 SJAE after- condenser inlet & Water 105 CS-2 Static - N.C. T,U NS Note 3, Sht.1 outlet. Valves OG558/OG560 closed G191157 Condensate 24-C-15,24-C-16 From SJAE to SPE to Con. Water 106 CS-2 Continuous T NS Note 3, Ref.20 Shts.1& 2 Demin.

G191157 Condensate 20,24-C-18, Con Demin to E-5s Water 107 CS-2 Continuous T NS Note 3, Ref.20 Shts.l& 2 20-C-19 G191157 Condensate 4-C-20, 4-C-48 To LCV-1A-2 Water 107 CS-2 Continuous T NS Ref.20 Sht.2 (to CRD pumps)

G191157 Condensate 10,14-C-21, Min flow line thru FCV-4 to Water 107 CS-2 Start-up T,U NS Ref.20 Sht.1 10-C-22 main condenser Nzl.44 G191157 Condensate 12-C-23 LP Htr bypass line Water 107 CS Normally T,U NS V64-19 closed Sht.1 Closed G191157 Condensate 20-C-25, 20-C-26 E-5s to E-4s Water 172 CS-2 Continuous T. NS Note 3, Ref.20 Sht.1 G191157 Condensate 20-C-27, 20-C-28 E-4s to E-3s Water 249 CS-2 Continuous SMC Ref.20 Sht.1 G191157 Condensate 20-C-29, E-3s to Feedwater Pumps Water 309 CS-2 Continuous SMC Ref.20 Shts.1&2 16,20,24 -C-30 16,20-C-31 &-32 G191157 Condensate 6,8,12-C-33, Hotwell Emergency Makeup Water 90 CS-1 Normally T,U NS Shts.l & 2 6-C-34 CST to condenser Nzl.45 Closed Thru N.C. V64-31 G191157 Condensate 4,6,C-33, US/DS of LCV-1A-1 Water 90 CS-1 Normally T,U NS Sht.1 (Condenser Makeup LCV) Closed bypasses N.C. V64-31 G191157 Condensate 4,6-C-35 Condenser hood spray Water 107 CS-2 Start-up / T,U. NS Ref.20 Sht.1 Bypass (FVC-36) at Nzl.60 Intermittent G191157 Condensate 3,6-C-37, Condensate Pump Casing Water 105 CS-1 Open / Static T NS Ref.20 Sht.1 3-C-38, 3-C-39 Vent to Hotwell Nozzle 46 G191157 Condensate 4-C-40 SPE Loop Seal drain to Atm. Water <175 CS-i Drain T NS Shts.l& 2 Drain Tank I G191157 Condensate 4-C-41, SJAE loop seal drain to Cond Water <175 CS-1 Drain T NS Sht.1 2-1/2-C-41A &41B Nzl.49 VY-RPT-05-00012 Revision 0 Page 19 of 42

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line bv Line FAC SusceDtibilitv Screenina Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

Gi91157 Condensate 8-C-42 DS of valve V62-18 N.C. Water 107 CS-1 Static / N.C. T,U NS Shts.1& 2 G191157 Condensate 2-1/2-C-43 US/DS of LCV-1A-3 Water 107 CS-2 Continuous T NS SB Location Shts.1& 2 (Condenser Reject LCV) No.116 G191157 Condensate 3,4-C-44, 3-C-44A Atmos. DrainTank drain to Water 105 CS-1 Drain T NS Shts.1& 2 Condenser Nozzle 63 G191157 Condensate 2-1/2-C-45, SJAE afterconden. Loop seal Water 105 CS-1 Static/ N.C. T NS V64-46 is N.C.

Shts.1& 2 2-1/2-C-41 B drain line to Atm. Drn. Tk. valve G191157 Condensate 2" C & 6"-C-46 Atmos. Drain Tank overflow / Water/ 105 CS-1 Drain T NS Vented to Shts.l& 2 drain to sump. Air Atmosphere Gi 91157 Condensate 3-C-47 Atmos. Drn Tk vent to suction Air/Gas 105 CS-1 Vent T,NW NS Sht.2 of Ventilation Exhaust Sys.

G191157 Condensate Y" & 1"-C Press. Line for RHR,CS, Water 107 CS-1 Continuous T* SSB* SB Location Shts.1 & 2 HPCI,RCIC in Rx. Bldg. thru No.119 PCV-32, & RO-64-2 to *Note 9 condenser nozzle 64 G191157 Condensate 3/4" & 1" Condensate Pump Gland Water 105 CS-1 Continuous T* SSB* *Note 9 Sht.1 seal lines (R.O. 64-1A & 1 B )

G191157 Condensate 3/3/4" & 1" lines at (SRV's SR-643A,B,C) & Water 310 CS-1 Static - N.C U NS V64-27A,B,C Sht.1 V64-26A,B,C bypass lines Valve N.C., Ref. 10 G191157 Condensate 2"-C Condenser Exhaust Hood Water 105 CS-2 Start-Up / U,T NS Sht.1 Spray lines (FCV-5) Low Power G191157 Condensate 3/4" 3/3/4-SJAE bypass line with iun- Water 105 CS Static -N.C. U NS Sht.1 identified FE OG-559 is N.C. Valve G191157 Condensate 2"-C 2" bypass around valves V64- Water 310 CS-2 Static -N.C. U NS V64-145A & B Sht.1 25A & V64-25B Valve N.C., Ref. 10 G191157 Condemin 8" CD-46 Condemin Bypass Strainer Water 107 CS-2 Intermittent U,T NS Sht.2 Return to Condensate G191157 Feedwater 12,16,24-FDW-1 Feedwater Pumps to E-2s) Water 312 CS-5 Continuous SMC Ref.20 Sht.3 12,16-FDW-2, -3 18-FDW-7, -8 G191157 Feedwater 18-FDW-12, -13 E-2s to E-ls Water 344 CS-5 Continuous SMC Ref 20 Sht.3 G191157 Feedwater 16,18-FDW-14, - E-ls to Rx Water 392 CS-5 Continuous SMC Ref.20 Sht.3 15 G191157 Feedwater 6-FDW-9 10% flow Feed Reg Valve. Water 312 CS-5 Start-up U NS Ref.20 Sht.3 G191157 Feedwater 18-FDW-10 Equalizing line Water 312 CS-5 Continuous SMC Flow at Sht.3 (Static) startup; Ref 20 VY-RPT-05-00012 Revision 0 Page 20 of42 I I .t I I

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Suscentibility Screenina Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191157 Feedwater 10-FDW-1I HP Heater Bypass line Water 312 CS-5 Normally U NS V63-5 N.C.

Sht.3 Closed G191157 Feedwater 4-FDW-4, -5, -6 Feed Pump Recirc: from 16" Water 312 CS-5 Normally U SMC* *Notes 3,5 Sht.3 FDW to FCV 2ABC Closed G191157 Feedwater 4-FDW-24, -25, Feed Pump Recirc: FCV Water 312 A335- Normally U,M SMC* *Notes 3,5 Sht.3 -26 2AB,C to 4x6 expander P11 Closed G191157 Feedwater 6-FDW-4, -5, -6 Feed Pump Recirc: 4x6 Water 312 CS-5 Normally U SMC* *Notes 3,5,10 Sht.3 expander to Cond. Nzl. 32 Closed G191157 Feedwater 8-FDW-22A & 22B Feedwater HP Htr. flush from Water 312 CS-5 Normally U SMC* *Notes 3,5, Sht.3 18" FDW to V63-22A,B. Closed . Ref.25 G191157 Feedwater 8-FDW-22A & 22B Feedwater HP Htr. flush from Water 312 A335- Normally U,M SMC* *Notes 3,5, Sht.3 V63-22A,B. to V63-23A,B P11 Closed Ref.25 G191157 Feedwater 8-FDW-22A & 22B Feedwater HP Htr. flush from Water 312 CS-5 Normally U SMC* Notes 3,5, 10 Sht.3 V63-23A,B to 5-FDW-22A,B. Closed Ref.25 G191157 Feedwater 5-FDW-22A & 22B FDW Htr. Flush U.S. of R.O. Water 312 A335- Normally U,M SMC* Notes 3,5, Sht.3 2A-C & RO3A-C. P11 Closed Ref.25 G191157. Feedwater 10-FDW-23A R.O. 2A-C & R.O. 3A-C to Water 312 A335- Normally UM SMC* Notes 3,5, Sht.3 &23B Condenser Nzl. 70 P11 Closed Ref.25 G191157 Feedwater 1/2" & 3/4" Feed pump Warm-up lines Water 312 CS-1 Continuous SSB Ref.1 3 Sht.3 (R.O.4)

G191157 Feedwater 2" 2" bypass around valves Water 392 CS-5 Static N. C. U NS Ref.13 Sht.3 V63-7A & V63-7B Valve G191157 Air 10,16,-AE-1, Air Evacuation System from Air, <175 CS-1 Continuous NW NS Sht. 3 Evacuation 10-AE-2 condenser to SJAE and Gases 8,10-AE-3 P-53-1A 10,14-AE-4 2" & Smaller G191157 Off Gas 10-OG-1 Off Gas Piping from SPE Air, <175 CS-1 Continuous NW NS Sht. 3 10,16-OG-2 Gases 10-OG-3,3-OG-11 G191157 Off Gas 1/1/2" -OG-5 Drain from Shutdown Iodine Water <175 CS-1 Static No T NS Shts. 2&3 Filter to Atmos. Drain Tank Flow to SIF G191157 Off Gas 10, 12-OG-100 Off Gas Piping from SJAE to Air, <175 CS-1 Continuous NW NS Sht.1 __ AOG (thru Valve OG-557) Gases G191157 Off Gas SIF-1, SIF-2, 16" inlet & outlet piping at Air, <175 CS-1 Static N.C. NW NS Sht.2 SIF-3, SIF-4 Shutdown Iodine Filter Gases Valves G191157 Oxygen All Condensate Oxygen Injection 02 Ambi- SS Continuous M,NW NS Sht.1 Injection From Manifolds to 24"-C-6 ent Tubing Page 21 of 42 VY-RPT-05-OOO1 Revision 00 VY-RPT-05-000122 Revision Page 21 of 42

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Vermont Yankee Pipinq Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191157 SPE Drip Leg 1-1/2" vent SPE Header Drip Leg Loop Gases <195 CS Continuous NW NS Sht.2 Loop Seal Seal vents to line 3"C-47 G191157 SPE Drip Leg 1" ,1-1/2" drain SPE Header Drip Leg Loop Water <195 CS Continuous SSB Sht.2 Loop Seal Seal drain to TK-3-1 A.

G191158 Heater Drains 6-HD-1A, & -IB E-1-IA to LCV-103-1A-1 Water 354 CS-2 Continuous SMC Refs.20,24 (3" @ LCV) E-1-1B to LCV-103-1B-1 G191158 Heater Drains 3-HD-1A, & -1B LCV-103-1A-1/11B-1 to E Water 354 A335- Continuous M NS Refs. .20,24 1A/B P11 G191158 Heater Drains 6-HD-2A/ -2B E-1-1A/B to E-2-1A/B Water 354 CS-2 Normally U NS Note 3, Ref.20 3,10-HD-18A /188 Condenser Bypass Lines Closed G191158 Heater Drains 8,10-HD-3A, & - E-2-1NAB to LCV-103-2A/B-1 Water 322 CS Continuous SMC Ref.20 HD-3B G191158 Heater Drains 3,10-HD-23A & - LCV-103-2AIB-1 to E-3-1 A/B Water 322 SS Continuous M NS SA240-304L HD-23B Ref.20 G191158 Heater Drains 6-HD-4A, & -48 E-2-1 A/B to E-3-1 A/B Water 322 CS Normally U NS Note 3, Ref.20 6-HD-19A & -19B Condenser Bypass Lines Closed G191158 Heater Drains 10,14-HD-5A,. E-3-1A/B to LCV-103-3A/B-1 Water 250 CS Continuous SMC Ref.20 HD-5B G191158 Heater Drains 6,20-HD-24A & LCV-103-3A/B-1 to E-4-1A/B Water 250 SS Continuous M NS A430, TP-HD-24B 308L, Ref.20 G191158 Heater Drains 6-HD-6A, & -68 E-3-1A/B to E-4-1A/B Water 250 CS Normally U NS Note 3, Ref.20 6,18-HD-20A/20B Condenser Bypass Lines Closed G191158 Heater Drains 16-HD-7A, -78 E-4-1A/B to E-5-1A/B Water 182 CS Continuous SMC Ref.20 14-HD-25A -25B G191158 Heater Drains 16-HD-8A, -88 E-4-1 A/B to E-5-1 A/B Water 182 CS Normally U NS Note 3, Ref.20 10,18-HD-21A/B Condenser Bypass Lines Closed G191158 Heater Drains 8,12-HD-9A, -98 P-3-1A/B suction and Water <182 CS N.C. used @ U NS Note 3, Ref.20 discharge <70% Power G191158 Heater Drains 4-HD-1OA, -10B P-3-1A/B min flow lines Water <182 CS N.C. used @ U NS Note 3, Ref.20

<70% Power G191158 Heater Drains 16,20-HD-14A/B, E-5-1A/B to E-6-1A/B Water 117 CS Continuous T NS Note 3, Ref.20 16,24-HD-17A-D (condenser)

G191158 Heater Drains 3-HD-26A /B E-5-1A/B external reference Water 117 CS-1 Static T,U NS leg for level controls G191158 Moisture 6,24-HD-1 1A-11D MS-1-1A-D to LCV-24A-D Water <440 CS-2 Continuous SMC Separator 6-HD-12A -12D Drains Page 22 of 42 VY-RPT-05-00012 Revision 00 VY-RPT-05-00012 Page 22 of 42 I I :- I ,

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TARI F 9~ ~uimm~mrv nf I in~ hv TABLE 2: -Summarv of Line bvLine F C Suscentibilitv qcreeninn Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191158 Moisture 6,14-HD-15A & LCV-24A-D to E-2-1A & 1B Water <440 A335- Continuous M SMC* Notes 3,5 Separator 15B P22 Drains G191158 Moisture 4,6-HD-13A-13D MS-i-iA-D to LCV-23A-D Water <440 CS-2 No flow, U NS Note 5 Separator (Bypass to Condenser) Normally Drains Closed G191158 Moisture 4,6-HD-16A-16D LCV-23A-D to Condenser Water <440 A335- No flow, UM NS Note 5 Separator P22 Normally Drains Closed G191158 Heater Vents 1-HV-IN1B E-1-1A/B Shell Start-up Vent Gases / <440 A335- Start up U, M NS Ref.24 US/DS of V67-1N1B to Vapor P11 Condenser B - Nozzle 25 G191158 Heater Vents 2-HV-12A/12B E-1 -lA/B Shell Continuous Gases/ <440 A335- Continuous M NS Ref.24 Vent US/DS of R.O. 1 Ni B Vapor P11 to common 2 inch line to Cond. B Nozzle 25A G191158 Heater Vents 1-HV-14A/14B 1 inch Bypass around Gases/ <440 A335- Static N.C. UM NS Ref. 10,24 R.O. 1A & 1B Vapor P11 Valve G191158 Heater Vents 1-HV-2N2B E-2-1AB Shell Start-up Vent Gases/ <400 A335- Start Up UM NS Ref.24 US/DS of V67-4A4B to Vapor P11 condenser A -Nozzle 24 G191158 Heater Vents 1-HV-13N13B E-2-1A/B Shell Continuous Gases/ <400 A335- Continuous M NS Ref.24 Vent to Cond. B (NzA. 24) Vapor P1l US & DS of R.O. 2A &2B G191158 Heater Vents 1-HV-15N15B 1 inch Bypass around Gases/ <400 A335- Static N.C. UM M NS Ref.10, 24 R.O. 2A & 2B Vapor P11 Valve G191158 Heater Vents 1, 1-1/2-HV-3A/3B E-3-1A/B Drain Cooler Gases/ <300 CS-1 Start Up U NS Note 3, SB Startup Vent US/DS of V67- Vapor Location Nos.

7A &7B to Cond. A (Nzl. 23) 46,47,51,52 G191158 Heater Vents 3/4-HV-8N8B E-3-1 AB to V67-15A/B, Gases/ <300 SS Start Up UM NS Shell Start-up Vent Vapor G191158 Heater Vents 2-HV-9A/9B E-3-1A/B Shell Continuous Gases/ <300 CS Continuous SSB SB Location Vent US/DS of R.O. 3N3B to Vapor Nos. 48,49,50, Cond. A Nzl. 23B. 53,54,55 G191158 Heater Vents 2-1/2-HV-4A/4B E-4-1A/B Shell Start-up Vent Gases/ <370 CS-2 Start Up U NS SB Location US/DS V67-9N9B to Vapor Nos.

Condenser B (Nzl. 22) 56,58,59,61 VY-RPT-05-00012 Revision 0 Page 23 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191158 Heater Vents 2-1/2,4-HV-8A E-4-1ANB Shell Continuous Gases / <370 cs-2 Continuous SSB SB Location US/DS of R.O. 4A/4B to Vapor Nos. 57,60,118 common 4 inch line to Cond.

A Nozzle 22B E-5-1NB Vent to Condenser Gases/ <168 CS-1 Continuous T NS G191158 Heater Vents 3,4-HV- 11A/1B NB (Nzl. 21A/21 B) Vapor G1 91158 Heater Vents 1-HV-5A/5B E-5-1 A/B Start-up Vent to Gases / <168 CS-1 Start Up U,T NS Condenser A/B (Nzl. 21A/B) Vapor (V67-11A &l 1B)

G191158 Heater Vents 3/4-HV HD Pump P-3-1NB Vent to Gases / <163 CS-1 Start Up U,T NS E-4-1A/B Vapor G191158 Heater Vents 2-HV HD Pump P-3-1A/B Vent to Gases/ <163 CS-1 Start Up U,T NS Condenser B (Nzl 50) Vapor G 191158 Moisture 3-HV-6A to 6D MS-1-1 A to D, shell to drain Gases / <380 CS-2 Static / U NS Separator tank TK-I-1A vent Vapor Equalizing Vents Line G191158 Moisture 6-HV-7A to 7D MS-I-IA to D, drain line to Gases / <380 CS-2 Static / U NS Separator - tank TK-I-AA equalizing line. Vapor Equalizing Vents Line G191158 Safety Relief 6-SRV-7A/B Heater Shell Safety Relief Steam <380 CS-2 No Flow U NS E-1 -1A/B to Conden B (Nzl. (Relief line) 29)

G191158 Safety Relief 6-SRV-8NB Heater Shell Safety Relief Steam <333 CS-2 No Flow U NS E-1-2A/B to Conden A (Nzl. (Relief line) 28)

G191158 Safety Relief 1-SRV Heater Tube Side Safety Steam <327 CS-2 No Flow U NS Relief E-1-2NB to Conden A (Relief line)

(Nzl. 30)

G191158 Safety Relief 6-SRV-9AIB Heater Shell Safety Relief Steam <300 CS-1 No Flow U NS E-1-3AIB to Conden A (Nzl. (Relief line) 27)

G191158. Safety Relief 6-SRV-10A/B Heater Shell Safety Relief Steam <234 CS-1 No Flow U NS E-1-4ANB to Conden B (Nzl. (Relief line) 26)

G191158 Safety Relief 1-SRV Heater Tube Side Safety Steam <168 CS-2 No Flow U NS Relief E.1-5AIB to 10-AE-4' (Relief line)

G191159 Service All All Raw 32 to CS/SS, Continuous 02,T NS Sht.1 & 2 Water & Water 150 Copper Sht,6 AOGCCW I I ,I Page 24 of 42 VY-RPT-05-00012 Revision 00 VY-RPT-05-00012 Revision Page 24 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191159 RBCCW All All Treated 32 to CS-1, Continuous T NS Sht.3 & 5 Water 150 G191159 TBCCW All All Treated 32 to CS-1i Continuous T NS Sht.4 Water 150 Copper G191160 Instrument All All Air 150 CS-1 Continuous NW NS Shts. 1 to Air 4 & Sht.8 G191160 Service Air All All Air 150 CS-1 Continuous NW NS Sht. 5 & 6 G191160 Diesel All Diesel Generator Starting Air Air 150 CS-1 Continuous NW NS Sht. 7 Generator & Air Inlets and Exhausts Starting Air G191161 Makeup All Raw Water & Demineralized Raw <175 CS-1 Continuous 02,T NS Water Water Water Treatment G191162 Lube Oil All Turbine & Recirc Pump MG Lube Oil 100 & CS-1 Continuous NW NS Sht. 1 Set Lube Oil 250 G191162 Fuel Oil All Diesel Generator, House Fuel Oil 100 CS-1 Continuous NW NS Sht.2 Heating, & Diesel Fire Pump Fuel Oil

G191162 Exhaust All Exhaust Stack & Off Gas Gas 175 CS-1 Continuous NW NS Sht.3 Stack & Off Gas G191162 Gas Control All Generator C02 & H2 Piping Gas Continuous NW NS Sh.4 Piping G191162 Generator All Generator H2 & Seal Oil Gas/Oil Continuous NW NS Sh.5 Shaft Seal Piping G191162 Hydrogen ALL H2 Piping from Trailer to H2 <150 S.S Continuous NW NS Sh.6 Piping _________Turbine Building ____ _______

G191162 Stator All Skid and piping to stator. De- <212 CS/CU Continuous 02 NS Sh.7 Winding Closed loop cooling system ionized Cooling H20 G191163 Fire All Fire Protection Piping : Inner Raw 100 A53 & No Flow 02 NS Shts 1 & 2 Protection & Outer Loops Water A-120 G191163 Fire All Low Pressure C02 CO2 CS No Flow NW NS Sht. 3 Protection ___-

G191163 Fire All C02 piping and bottle racks CO 2 CS No Flow NW NS Sht. 4 Protection for Cable Vault / SWGR Rms VY-RPT-05-00012 Revision 0 Page 25 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line bv Line FAC Susceptibilitv Screenina Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

Gi 91164 Sampling All Process Sampling Line Water SS M NS System Sh.1 I G191165 Sampling All Process Sampling Line Water SS M NS System Sh.2 G191166 Circ. Water All Circulating Water System & Raw <150 CS Continuous 02 NS Associated Piping Water G191167 Main Steam 18-MS-7A to -7D MS from Rx to V2-86A -86D Sat 540 CS-5 Continuous SMC Ref. 20 Steam G191167 Main Steam 10-MS-4A MS 18-MS-7D to HPCI Turb. Sat .540 CS-5 Static U NS Ref. 20 Steam G191167 Main Steam 3-MS-5A MS 18-MS-7C to RCIC Turb. Sat 540 CS-5 Static U NS Ref. 20

_ _Steam G191167 Main Steam 3-MSD-2 MSD Drain Header in Drywell Steam/ 540 CS-5 Start-Up U NS Ref. 20 Drains thru Pen. X-8 (US of V2-77) Conden sate G1 91167 Main Steam 1-1/2,2-1/2 & 3- MSD Header in Stm Tunnel Steam/ 540 CS-5 Start-Up U NS Ref. 20, Drains MSD-3 to 3-MS-3 in Torus Area Conden Note 8 between MS-77, -79, & -78 sate Gi 91167 Main Steam 3-MSD-4 MSD drain header D.S. of V2- Steam/ 540 CS-5 Intermittent SNM/SSB SB Locations Drains 79 Torus Area & Htr. Bay to Conden No. 4 & No. 5 condenser nozzle 45. sate Note 8 G1 91167 Main Steam 3-MSD-5 MSD drain header to CRW Steam/ 540 CS-5 Normally U NS Note 8 Drains (N.C. line) Conden Closed sate G191167 Main Steam 6-MSD-10 MSD drip leg MS-I-lA Steam/ 540 CS-5 Intermittent SNM Note 8 Drains Conden sate G1 91167 Main Steam 1,2,2-1/2-MSD-1 1 From 3" MSD-4 thru ST-60-3 Steam/ 540 CS-5 Intermittent SSB SB Location Drains to tee with line 2-1/2-MSD-12 Conden No. 2, sate Note 8 G191167 Main Steam 1,2-1/2-MSD-12 MSD-around ST-60-3 thru Steam/ 540 CS-5 Intermittent SSB SB Location Drains LCV-143 to line 3-MSD-4 Conden No. 3, sate Note 8 G191167 Main Steam 2-MSD-1 MSD from 6"MSD-10 drip leg Steam/ 540 CS-5 Intermittent SSB Note 8 Drains to 2-1/2"MSD-3 Conden sate G1 91167 Main Steam 2", 1" -MSD MSD piping immediately Steam/ 540 A335- Intermittent NS Note 8 Drains downstream of V60-24 Conden P11 sate Page 26 of 42 VY-RPT-05-00012 Revision 0 VY-RPT-05-00012 0 Page 26 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191167 Main Steam 1-MSD MSD from HPCI & RCIC Stm Steam/ 540 CS-5 Start-Up U NS Note 8 Drains Supply in Drywell to 3-MSD-2 Conden (US of V23-15 & V23-15) sate G191167 Main Steam 2-MSD MSD from 18-MS-7A to D in Steam/ 540 CS-5 Start-Up U NS Note 8 Drains Drywell to 3-MSD-2 Conden sate G191167 Main Steam 1- MSD MSD MS-79 bypass (open Steam/ 540 CS-5 Continuous SSB SB Location Drains thru orificed valve MS-33). Conden No.1, Note 8 sate G191167 Main Steam 1-MSD MSD from HPCI/ RCIC Stm. Steam/ 540 CS-5 Static - N.C. U NS Note 8 Drains Supply outside Drywell to Conden Valve 2"MSD-! (US of V23-16 & sate V23-16)

G191167 Rx Recirc. 12,22,28-PLR. Rx Recirculation Piping in Water 540 SA316L Continuous M NS Drywell.

G191167 Feedwater 16-FDW-14/15 FDW in Turb. Bldg. & Stm. Water 392 CS-5 Continuous SMC Ref.20 Tunnel up to V2-96B & -27B Turb.

G191167 Feedwater 16-FDW-16/17 FDW in Stm. Tunnel & Water 392 CS-5 Continuous SMC Ref.20 Drywell up to V2-29A/B.

G191167 Feedwater 16,10-FDW-18 to FDW in Drywell from V2- Water 392 CS-5 Continuous SMC Ref.20

-FDW-21 29A/B to Reactor.

G191167 Rx Safety 10-SRV -1 5A to - SRV in Drywell & Torus Steam <540 CS-2 No Flow U NS Relief 15D (Relief line)

G191167 Rx. Water 2-CUW Rx Btm. Head Drain (N-15) Water <540 CS Continuous SSB Clean Up to SS weld at bottom of CRDs G191167 Rx. Water 2-CUW Rx Btm. Head Drain SS weld Water <540 SS Continuous M NS Clean Up at bottom of CRDs to V2-99 G191167 Rx. Water 2-CUW-19 Rx Btm. Head Drain V2-99 to Water <540 SS Continuous M NS Clean Up 4" CUW-18 G191167 Rx. Water 4-CUW-18 CUW from RHR to V12-16 Water <540 SS Static N.C. M NS Clean Up Valve G191167 Rx. Water 2-CUW Rx Btm. Head Drain DS of Water <540 CS Static N.C. U NS Clean Up Valve V2-46 to floor drain Valve G191167 RV Top Head 1", 2 Vent Line N-7 to FCV-2-17, Steam 540 SS Static M NS Vent and Rx Vessel Instrument. I

.G191167 RV Top Head 2" Vent Line N-7 to 18"MS-7C Steam 540 SS Continuous M NS Vent VY-RPT-05-00012 Revision 0 Page 27 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screeninq Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes Drawing No. I System I

Line No(s). Description Temp (F)

Power Operation (Note 1) Classification (No t e 2 )

G191167 RV Top Head 1",2" Drain Line from FCV-2-18 Water/ <540 CS Intermittent SSB Vent and FCV-2-21 to Drywell Steam

__ _Equipment Sump G191167 RV Flange Y2", 1' RV Flange High Pressure Steam/ <540 SS Intermittent M NS Leakoff leakoff N-13 to LCV-2-21 Conden sate G1 91167 RV Flange 1/2", 1" RV Flange Low Pressure Steam/ <540 CS Static U NS Leakoff leakoff N-1 4 (capped line) Conden

"_ _sate G1 91168 Core Spray 12-CS-iA/B Core Spray from Torus to 6 Water <175 CS-1 ECCS U,T NS 10-CS-2A1B inches beyond valves CS <175 CS-2 8-CS-3A/B 12AIB <575 "CS-5 8-CS-4A/B(partial) <575 CS-5 G1 91168 Core Spray 8-CS-4A/B(partial) Core Spray from beyond Water <575 S.S. ECCS U,M,T NS valves CS 12A/B to Rx.

G191168 Core Spray 1-1/2-CS-8N8B SRV-20A/B suction & disch. Water <175 CS-2 ECCS U,T NS 3-CS-5A/5B to Rx. Bldg. floor sumps. CS-1i G191168 Core Spray 8-CS-6A/6B Core Spray full flow test line Water <175 CS-2 ECCS U,T NS to 12-RHR-17/18 &Torus Gi 91168 Core Spray 8-CS-6N6B Core Spray full flow test line Water <1 75 CS-2 ECCS U,T* SNM* Note 9 DS of RO 42A and 42B G1 91168 Core Spray 3-CS-7A to 7D Core Spray connect. to RHR Water <175 CS-2 Static U,T NS Normally Closed Valves CS- -

16A/B G191168 Core Spray 3-CS-11Ai11B CS Pump Min Flow Lines to Water <175 CS-2 ECCS U,T NS 12-RHR-1 7/18 & Torus G1 91168 Core Spray 3-CS-1 il 1B CS Pump Min Flow Lines DS Water <175 CS-2 ECCS U,T SMN

Note 9

- of R,O, 37A and 37B G191168 Core Spray 2-CS-9N9B Core Spray Pump Min Flow Water <175 CS-2 ECCS U " NS Line RO bypass N.C. valve CS-27A /27B.

G191168 Core Spray 2-CS-10Ai10B Core Spray flushing line from Water <175 CS-2 ECCS U NS CST. N.C. valve C&21A /2B.

G191168 Core Spray 1-CS-12A/12B 1 inch line to core dp above Water <575 SS-6 ECCS U,M NS core plate instruments.

G191168 Core Spray 1-CS-13A/13B 1 inch line pressurizing line Water <175 CS-2 ECCS U NS from Condensate.

G1 91168 Condensate 112-CST4 12 inch line from CST. N.C. Water <175 CS-2 ECCS U NS Storage 12-CST-27 valves CS-8A & CS-88.

VY-RPT-05-00012 Revision 0 Page 28 of 42 11 . . I

Vermont Yankee Pipinq Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191169 HPCI 14,16-HPCI-1 HPCI Pump suction from CST Water <175 CS-1 ECCS U NS Sht.1 & 2 1 G191169 HPCI 14-CST-1 HPCI Pump suction from CST Water <175 SS-1 EGOS U,M NS Sht.1 & 2 G191169 HPCI 10-HPCI-18 HPCI Pump discharge to RX Water <175 CS-5 ECCS U NS Sht.1 & 2 14-HPCI-2, <140 14-HPCI-15B/15A <400 G191169 HPCI 18,20,24-HPCI-3 HPCI Turbine Exhaust to Steam <350 CS-1 ECCS U NS Sht.1 & 2 Torus G191169 HPCI 16-HPCI-14A/ HPCI Turbine Exhaust to Steam <350 CS-1 ECCS U NS Sht.1 & 2 14B Torus Rupture Disc.

G191169 HPCI 16-HPCI-4 HPCI Pump suction from Water <175 CS-1 ECCS U NS Sht.1 & 2 Torus G191169 HPCI 10-HPCI-5 HPCI Test line to CST from Water <140 CS-5 ECCS U NS Sht.1 & 2 14-HPCI-15B to V-23-24 G191169 CST 10-CST-2 HPCI Test line to CST (from Water <140 SS-1 ECCS U,M NS Sht.1 & 2 V23-24 to CST)

G191169 HPCI 4-HPCI-6 HPCI Pump Min. Flow line Water <175 CS-5 ECCS U NS Sht.1 & 2 4-HPCI-7 CS-1 G191169 HPCI 2-HPCI-8 Coolant for HPCI Gland Seal Water <140 CS-2 ECCS U NS Sht.1 & 2 2-HPCI-9 & -12 Condenser (suction & disch.) <175 CS-1 G191169 HPCI 2-HPCI-10 Coolant for HPCI Lube Oil Water <140 OS-1 EGGS U NS Sht.1 & 2 2-HPCI-11 Cooler (suction & discharge) <175 G191169 HPCI 2,4-HPCI-12 Gland Seal Condenser Water <175 CS ECCS U NS Sht.1 & 2 Coolant discharge back to HPCI pump suction G191169 HPCI 3-HPCI-13 Gland Seal Exhauster Gas/ <175 CS EccS U NS Sht.1 & 2 Discharge to SBGT Water Vapor G191169' HPCI 2-HPCI-16 HPCI Turbine Exhaust Drain Stm./ <375 CS EGGS U NS Sht.1 & 2 line to Torus Water G191169 HPCI 2-HPCI-17 HPCI Turbine Hotwell to Water <200 CS-1 ECCS U NS Sht.1 & 2 HPCI Pump suction.

G191169 HPCI 2,3-HPCI-19 HPCI Turbine Exhaust to Air/N2/ <350 CS-1 EGGS U NS Sht.1 & 2 Torus Air Space Vacuum Steam Breaker.

G191169 HPCI 1-HPCI HPCI Turbine discharge drain Water <175 CS-1 ECCS U NS Sht.1 & 2 to gland seal condenser.

VY-RPT-05-00012 Revision 0 Page 29 of 42

i. I I

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191169 HPCI 1-HPCI From HPCI gland seal Water <175 CS-1 ECCS U NS Sht.1 & 2 condenser to hotwell..

G191169 HPCI 1 -HPCI 1 inch line pressurizing line Water <175 CS-1 ECCS U NS Sht.1 & 2 from Condensate.

G191169 HPCI 1-HPCI 1" vent line between rupture Air <175 CS-1 No Flow U NS Sht.1 & 2 discs on 14-HPCI-14B.

G191169 HPCI 1-HPCI To floor drain through LCV-39 Water <200 CS-1 No Flow U NS Sht.1 & 2 & LCV-40 G1 91169 Main Steam 10-MS 4A/4B MS Supply from Rx to V Steam 540 CS-5 Static/ECCS U NS Sht.1 & 2 14 G191169 Main Steam 1-MSD HPCI Turb. Casing Drain to Steam 540 CS-1 ECCS U NS Sht.1 & 2 Drains - Exhaust Steam Drain Pot. _

G191169 Main Steam 1, 3/4-MSD HPCI Turb. Ring Drain to Steam 540 CS-5 ECCS U NS Sht.1 & 2 Drains (HPCI Skid) Exhaust Steam Drain Pot.

G191169 Main Steam 3/4-MSD(HPCI HPCI Turb. Chest Drain to Steam 540 CS-5 ECCS U NS Sht.1 & 2 Drains Skid) Exhaust Steam Drain Pot.

G191169 Main Steam 3/ -MSD HPCI Turb. Seat Drain to Steam 540 CS-5 ECCS U NS Sht.1 & 2 Drains (HPCI Skid) Exhaust Steam Drain Pot.

G191169 Main Steam 1-MSD HPCI Turb. Shaft Seal Steam 540 CS-5 ECCS U NS Sht.1 & 2 Drains (HPCI Skid) L.P.Leakoff to Gland Seal Condenser.

G191169 Main Steam 1-MSD Two Lines HPCI Turb. Control Valve Steam 540 CS-5 ECCS U NS Sht.1 & 2 Drains (HPCI Skid) Stem Leakoff to Gland Seal Condenser.

G191169 Main Steam 1-MSD HPCI Skid HPCI Turb. Stop Valve Stem Steam 540 CS-5 ECCS U NS Sht.1 & 2 Drains Leakoff to Gland Seal Condenser.

G 191169 Main Steam 1-MSD HPCI MS Drain Pot to HPCI Conden 540 CS-5 Continuous SSB SB Location*

Sht.1 & 2 Drains LCV-53 to intersection of line sate No. 122, D.S. of ST-3. Note 8 G191.169 Main Steam 1-MSD HPCI MS Drain Pot to ST-3 Conden 540 CS-5 Continuous SSB SB Location Sht.1 & 2 Drains to intersection of line D.S. of sate No.123,

_HPCI LCV-53 Note 8 G191169 Main Steam 1-MSD HPCI MS Drain piping US & Conden 540 CS-5 Continuous SSB SB Location Sht.1 & 2 Drains DS of HPCI FCV-42 sate No. 124, Note 8.

Page 30 of 42 VY-RPT-05-OOO1 2 Revision 0 VY-RPT-05-00012 Page 30 of 42 I ,I :I I I

Vermont Yankee Pipinq Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191169 Main Steam 1', 2"-MSD HPCI MS Drain piping & Conden 540 A335- Continuous M NS SB Locations Sht.1 & 2 Drains fittings D.S. of HPCI FCV-43 sate P11 No. 31 & 33 to Condenser @ Conn. 56 ( Note 4),

Note 8 G191170 Control Rod 4" & 3" CRD- CRD Pumps P-38-1AIB Water <150 CS-1 Continuous T NS Drive 1A/1 B Suction -

G191170 Control Rod 2-1/2-CRD-2 CRD return to RWCU Return Water <150 CS-5 Continuous T NS Drive G191170 Control Rod 2-1/2 & 3-CRD-3 Old return line to Rx through Water <150 SS-5 No Flow M/U NS Drive Pen X-36. Cut & capped.

G191170 Control Rod 10-CRD-4 & 4A Scram Discharge Volume & Water <280 CS-4 Post Scram U NS Drive 6-CRD-5 & 5A Headers 6-CRD-6 & 6A 6-CRD-7 & 8 G191170 Control Rod 2-1/2-CRD-9 CRD Return to RWCU Return Water <575 CS-5 Continuous SMC Drive DS of check valve CUW-1 81 G191170 Control Rod 2-CRD CRD Pump Discharge to Water <150 CS-5 Continuous T NS Drive Filters F-16-1N1B__

G191170 Control Rod 2-CRD Filters F-16-1N1B to FCV- Water <150 SS-5 Continuous M,T NS Drive 19A/B I G191170 Control Rod 1 & 1-1/2CRD FCV-19NB to PCV-20 & Water <280 SS-5 Continuous M NS Drive PCV-22 to 2-1/2 CRD-2 G191170 Control Rod 1 CRD Drive Water & Cooling Water Water <280 SS-5 Continuous M NS Drive to HCUs.

G191170 Control Rod 2-CRD Charging Water to HCUs Water <280 SS-5 Continuous M NS Drive G191170 (Control Rod 1-CRD Exhaust Water from HCUs to Water <280 CS During Rod U NS Drive 2-1/2-CRD-2 Movement G191170 Control Rod 1 & 314-CRD Insert &Withdraw lines (89 Water <280 SS Continuous M NS Drive Total)

G191170 Control Rod 1 & 1-1/2-CRD CRD Pump Min Flow to Water <150 CS Continuous T, U NS Drive 10-CST-2 G191170 Control Rod 1-CRD CRD Pump Min Flow DS of Water <150 CS Continuous T,U* SSB* Note 9 Drive R.O.s 24NB & 25NB G191171 Standby All SLC Piping Borated SS Static M,U NS Liquid Control Water G191172 RHR 20-RHR-1A to ID RHR Pump Suction from Water <300 CS-1 Shutdown U NS Recirc. Cooling VY-RPT-05-00012 Revision 0 Page 31 of 42

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Proqram - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191172 RHR 20,24,26-RHR-2A RHR Pump Suction from Water <300 CS-1 ECCS & U NS to 2D Torus Torus Coolinq G191172 RHR 20,24,26-RHR-2A RHR Pump Discharge to Water <300 CS-2 ECCS & U NS to 2D RHR Hx. Torus Cooling G191172 RHR 4-RHR-4,4A,4B RHR to Rad Waste Water <300 CS-1/2 Normally U NS Closed G191172 RHR 16-RHR-5A/5B RHR Hx. Discharge & Bypass Water <300 CS-2 Shutdown & U NS 20,24-RHR-6 & 7 Torus Cooling G191172 RHR 20-RHR-8 Train A to B cross connection Water <262 CS-2 No Flow .. U NS Normally Closed.

G191172 RHR 12,14,16-RHR-9 Containment Spray Lower Water <262 CS-2 LOCA U NS Header G191172 RHR 12,14-RHR-14 Containment Spray Upper Water <300 CS-2 LOCA U NS Header G191172 RHR 4-RHR-11 & 16 RHR Hx. to Torus Water <300 CS-1 LOCA U NS 4-RHR-21 & 22 (Torus Spray)

G191172 RHR 12-RHR-10 & 15 RHR Hx. to Torus Water <300 CS-2 Shutdown & U NS 12-RHR-12 & 17 (Torus Cooling) Torus 12-RHR-20 & 23 Cooling G191172 RHR 3,4-RHR-13A to D RHR Pump Min-flow lines Water <300 CS-2 Shutdown & U NS 4-RHR-24A & 24B Torus Cooling G191172 RHR 24-RHR-6 & 28, LPCI & Shut Down Cooling Water <300 CS-2 ECCS, U NS 24-RHR-7 & 29 to RX <575 Shut Down Cooling G191172 RHR .24-RHR-30, &.-31 LPCI & Shut Down Cooling Water <575 SS-6 ECCS, M NS to RX Shut Down Cooling G1 91172 RHR 4-RHR-26A - 26D Drain Lines to Rx floor drain Water <300 CS-1 N.C. Drain U NS-4-RHR-27A - 27D Sump or to Rad Waste 4-RHR-44A - 44D 4-RHR-45A - 45D 4-RHR-42A - 42D 4-RHR-43A - 43B G191 172 RHR 20-RHR-32 RHR suction from Recirc.. Water <575 SS-6 Shut Down M NS Loop in Drywell - Cooling VY-RPT-05-00012 Revision 0 Page 32 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Pro-ram - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191172 RHR 20-RHR-33 RHR suction from Recirc. In Water <575 CS-5 Shut Down U NS Drywell at V-18 to V-17 Cooling G191172 RHR 4-RHR-35A & 35B Filling & Flushing Lines from Water <300 CS-2 Normally U NS 4-RHR-36A & 36B CST CS-1 Closed 4-RHR-37A & 37B 4-RHR-38A - 38C G191172 RHR 8-RHR-39 From Fuel Pool Cooling Water <150 CS-1 Normally U,T NS System to RHR pump suction Closed G191172 RHR 8-RHR-40 To Fuel Pool from RHR Hx. A Water <262 CS-2 Normally U - NS Closed G191172 RHR 10-RHR-41A/B Tie in from Service Water Water <262 CS-2 Normally U NS Closed G191173 FPC All FPC & Enhanced FPC Water <175 CS & T NS Shts. 1 & SS 2

G191174 RCIC 4-RCIC-1 RCIC Pump to 16-FDW-15 Water <175 CS-5 EGGS U NS Sht.1 & 2 4-RClC-8B/8A <450 G191174 RCIC 4-RCIC-2 RCIC Flow Test Line to 10- Water <140 CS-5 EGGS U,T NS Sht.1 & 2 HPCI-5 & CST G191174 RCIC 6-RCIC-3 RCIC Pump Suction from Water <175 CS-1 ECCS U NS Sht.1 & 2 Torus G191174 RCIC 6-RCIC-7 RCIC Pump Suction from Water <175 CS-1 EGGS U NS Sht.1 & 2 CST G191174 CST 6-CST-3 RCIC Pump Suction from Water <325 SS-1 ECCS M NS Sht.1 & 2 CST G191174 RCIC 8-RCIC-4 RCIC Turbine Exhaust to Steam <325 CS-1 EGOS U NS Sht.1 & 2 Torus G191174 RCIC 8-RCIC-5A/5B RCIC Turbine Exhaust to Steam <325 CS-1 ECCS / U NS Sht.1 & 2 Torus Rupture Disk Static G191174 RCIC 3-RCIC-6 RICC Turbine Exhaust Drip Steam <325 CS-1 ECCS U NS Sht.1 & 2 Leg G191174 RCIC 2-RCIC-9 RICC Pump Min Flow Line to Water <175 CS-5 ECCS U,T NS Sht.1 & 2 2-RCIC-10 12-RHR-17 CS-1 G191174 RCIC 2-RCIC-11 RCIC Pump Disch. to L.O. Water <175 CS-5 ECCS U,T NS Sht.1 & 2 2-RCIC-12 Cooler & Barometric CS-1 Condenser G191174 RCIC 2-RCIC-13 RICC Vacuum Pump Disch. Gas/ <175 CS-1 ECCS U,T NS Sht.1 &2 to Torus. C'ndens rage ;i;~ 0? 4~

VY-RPT-05-00012 Revision 00 Page 33 of 42

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification

_(F) Operation (Note 2)

G191174 RCIC 1-1/4-RCIC-13 RIC Vacuum Pump Disch. Gas/ <175 CS-1 ECCS U,T NS Sht.1 & 2 To Barometric condenser C'ndens (through valve PCV-36).

G191174 RCIC 2-RCIC-14 RCIC Cond. Pump Disch. to Water <175 CS-1 ECCS U,T NS Sht.1 & 2 RCIC Pump Suction.

G191174 RCIC 1,2-RCIC-16 RCIC Turbine Exhaust to Steam/ <325 CS-1 ECCS U NS Sht.1 & 2 Torus Air Space Vacuum Vapor Breaker.

G191174 RCIC 1-RCIC 1 inch vent line between Air <325 CS-1 No Flow NW NS Sht.1 & 2 rupture discs on 8-RCIC-5B.

G191174 RICC i-RCIC To floor drain through LCV-12 Water <325 CS-1 No Flow U NS Sht.1 & 2 & LCV-13 G 191174 Main Steam 3-MS-5A MS Supply from Rx to Steam 540 CS-5 Static U NS Sht.1 & 2 2,3-MS-5B V-131& V-1 I G191174 Main Steam 1-MSD (Skid RCIC Turbine Seal Drains to C'ndens 540 CS-1 ECCS U NS Sht.1 & 2 Drains Piping) Barometric Condenser G191174 Main Steam 1-MSD (Skid RCIC Turbine Casing Drain to C'ndens <325 CS-1 ECCS U NS Sht.1 & 2 Drains Piping) Turb. Exhaust Drip Leg G191174 Main Steam I-MSD -2 lines* RCIC Turbine Trip/Throttle & C'ndens <540 CS-5 ECCS U NS Sht.1 & 2 Drains (Skid Piping) Governing valves.Seal leakoff lines to barometric condenser G191174 Main Steam 3/4-MSD (Skid RCIC Turbine drain from C'ndens <540 CS-1 ECCS U NS Sht.1 & 2 Drains Piping) Trip/Throttle to turbine G191174 Main Steam 1/2-MSD -2 lines RCIC Turbine Trip/Throttle & C'ndens <540 CS-1 ECCS U NS Sht.1 & 2 Drains (Skid Piping) Governing valves seat drains to Turb. Exhaust Drip Leg G191174 Main Steam 1-MSD Drain from Turbine Exhaust C'ndens <325 CS-1 ECCS U NS Sht.1 & 2 Drains dripleg US & DS of ST13-7 to barometric condenser G191174 Main Steam 3/, IMSD RCIC MS Drain Pot to RCIC C'ndens <540 CS-5 Continuous SSB SB Location Sht.1 & 2 Drains LCV-32 to intersection of line No.125.

D.S. of ST-6. Note.8 G191174 Main Steam 1-MSD RCIC MS Drain Pot to ST-6 C'ndens <540 CS-5 Continuous SSB SB Location Sht.1 & 2 Drains to intersection of line D.S. of No.126, HPCI LCV-32 Note 8 G191174 Main Steam 1-MSD RCIC MS Drain piping US & C'ndens <540 CS-5 Continuous SSB SB Location Sht.1 & 2 Drains DS of RICC FCV-34 No.127, Note 8

A VY-RPT-05-00012 Revision 0 Page 34 or 42

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191 174 Main Steam 1-MSD HPCI MS Drain piping & C'ndens <540 A335 Continuous M NS SB Location Sht.1 & 2 Drains fittings D.S. of RCIC FCV-35 P-1I1 No.32 (Notes 4&8)

G191176 Condensate 14-CST-1 CST Supply to HPCI & RCIC Water <175 SS-1 ECCS M,U NS Sht.1 Transfer 10-CST-2 pumps and combined test line 6-CST 3 return G191176 Condensate 12-CST-4 CST Supply to CS through Water <175 SS-1/ No Flow M,U,T NS Sht.1 Transfer N..C. Valves V1 4-8A & 8B I G191176 Condensate 4-CST-5 Supply to CST from Rad Water <175 SS-1 Intermittent MIT NS Sht.1 Transfer Waste G191176 Condensate 6-CST-6 From Fuel Pool (6-FPC-21) Water <175 SS-1 Intermittent MT NS Sht. 1 Transfer Normally Closed.

G191176 Condensate 6-CST-6 From Fuel Pool (6-FPC-21) Water <175 SS-1 Intermittent MT NS Sht. 1 Transfer Normally Closed.

G191176 Condensate CST-7 through Misc. transfer lines Water <175 CS-1 Intermittent 02, T NS Sht.1 Transfer CST-34 G191176 House Heat- 4-HS-1 HHS to CST and DWST Steam <365 CS-1 Winter SNM Sht.1 ing Steam Steam Heating Coils G191176 House Heat- 2, 2-1/2" HS-1, HHS to CST Steam Heating Steam <365 CS-1 Winter SSB Sht.1 ing Steam Coil G191176 House Heat- CST Steam Heating Coil Steam <365 Alum. Winter M NS VY Dwg. No.

Sht.1 ing Steam 6061 5920-3912 G191176 House Heat- 1-1/2,2-HSCR HHS Condensate return from Conden <365 CS-1 Winter SSB Sht.1 ing Steam CST Steam Heating Coil sate G191176 Demin. DW-1 to DW-3, Various Demineralized Water Water <175 SS-1 Intermittent T NS Sht. 2 Water DW-5 to DW-9, Transfer Lines

-_-_DW-10 to DW-11 G191176 Demin. DW-10 Demin. Water Storage Tank Water <175 SS-1 No Flow 02, T NS Sht. 2 Water (DWST) Overflow G191176 House Heat- 2" & SM -HS HHS to DWST Steam Steam <365 CS-1 Winter SSB Sht. 2 ing Steam Heating Coil G191176 House Heat- DWST Steam Heating Coil Steam <365 Alum. Winter M NS VY Dwg. No.

Sht.1 ing Steam 6061 5920-3913 G191176 House Heat- 1-1/2,2-HSCR HHS Condensate return from Conden <365 CS-1 Winter SSB Sht. 2 ing Steam CST Steam Heating Coil sate G191177 Rad Waste All Radwaste System Piping Water/ <175 CS-1 Intermittent T NS Shts. 1 - 4 Systems Air i~age JeoT4d .J VY-RPT-05-00012 Revision 00 Page 35 of 42 1 ,I :, I I

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191178 Rx. Water 4-CUW-18 Letdown from Rx to RWCU Water 575 SS-6 Continuous M NS Sht.1 Clean Up 4-CUW-1,1A,1B pumps to Regen Hx. to Non-3,4-CUW-2A,2B,3 Regen. Hx.

G191178 Rx. Water 3,4-CUW-4A &4B Letdown Non - Regen Hx. to Water 150 SS-5 Continuous M NS Sht.1 Clean Up Cleanup Filter Demin.

G191178 Rx. Water 3,4-CUW-5A & 5B Return from Cleanup Filter Water 150 SS-5 Continuous M NS Sht.1 Clean Up Demin to Regen. Hx.

G1 91178 Rx. Water 4-CUW-6 Return from Regen. Hx. to Water <575 SS-6 Continuous M NS Sht.1 Clean Up 4-CUW-54 line 4-CUW-55 G191178 Rx. Water 4-CUW-55 Return from line 4-CUW-54 to Water 450/ CS-5 Continuous 02 NS Note 3 Sht.1 Clean Up FDW System 575 G191178 Rx. Water 4-CUW-7 Return from Clean-up Demin. Water 150 CS-5 Continuous T NS Sht.1 Clean Up 4-CUW-8 To main condenser (Conn. CS-1 66)

G191178 Rx. Water 4-CUW-9 Clean-up Demin drain to Rad Water 150 CS-5 Normally U NS Sht.1 Clean Up 4-CUW-10 Waste. CS-1 Closed G191178 Rx. Water 2-CUW-19 Rx Btm. Head Drain V2-99 to Water' <540 SS Continuous M NS See list for Sht.1 Clean Up 4" CUW-18 G191167 G191178 Rx Water 2,3-CUW-1 1 Clean-up Filter Demin. Pre- Water 150 CS-5 Continuous T NS Sht.2 Clean Up - 2-CUW-12A - 12B coat pump associated piping. CS-1 Demineralizer 2-CUW-13A - 13B 3-1/2-CUW-14 2,3-CUW-14 -15 2,3-CUW-16 -17 G1 91178 Rx Water 1 to 4 inch piping Remaining lines on the Water 150 CS / SS Continuous T NS Sht.2 Clean Up - Line Nos. 20 to 53 Clean-up Filter Demin /

Demineralizer and from 56 to 62 Phase separator associated piping.

G191237 Chilled Water 3-CHS & 3-CHR SAC-1 & SAC -2 Chilled Water <175 CS Continuous T NS Sht. 2 Water Supply & Return Lines G191237 SCH-1 7/8 & 1-3/8 CU Chiller SCH-1 Condenser Refriger <175 CU Continuous NW NS Sht. 2 Piping to SACC-1N1 B ant I G191238 SW & 1,2-1/2,& 6 SW & RRU Supply & Return Piping Water <175 CS/CU Continuous 02, T NS RBCCW RCW rage ~5bOT42 .A VY-RPT-05-00012 Revision 0 VY-RPT-05-00012 Revision Page 36 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

G191254 House All HHS HHS Supply Piping to SUH & Steam <365 CS Winter SNM/SSB Heating Stm Bldg. Heaters G191254 House HSCR piping US HHS Condensate Return Steam, <365 CS Winter SSB Possible Heating Stm & DS of Steam Lines from SUH & Bldg. Conden Steam Traps Heaters sate - Trap Blow-by G191254 House HSCR piping DS/ HHS Condensate Return Conden <175 CS Winter T NS Heating Stm remote from Lines from SUH & Bldg. sate Steam Traps Heaters G191267 Nuclear Boiler All Reactor Instrument Tubing Water 540 SS Continuous M NS Shts.1 & 2 Vessel and Piping Instrument.

G191274 Condensate CD-1A through Condensate Demineralizer & Water 107.1 CS Continuous T NS Demineralizer CD-42E Backwash Piping G191280 Potable All Plant Potable Water piping Water <100 B88/ Continuous T NS Water PVC VY-E Containment All Containment Atmosphere Air/ N2 <200 CS Continuous NW NS 002 Atmosphere Dilution Piping Dilution VY-E-75-001 Advanced Off 12-OGE-100-Gl Off Gas Process Line from Gas/ 273 to CS Continuous SNM 33600-A-202 Gas (AOG) 12-OGE-101A-G1 OG-557to Steam Mixing Tee Steam 655 33600-A-207 12-OGE-102A-G1 ED-1 00-1A to HE-101-1A 12-OGE-103A-J1 Remaining AOG Remaining AOG Process Gas <175 CS Continuous T NS Process Lines Lines except steam supply Steam Supply 4-MS-191A-D3 Steam to MS-100-1A Steam 365 CS Continuous SNM 1-1/2-MS-136A- Steam to HE-100-1A Steam 365 CS Continuous SSB D3 2-MS-138A-G1 Steam to ED-100-1A Mixing Steam 365 CS Continuous SSB Tee Steam Y2-,1",2" CNP Condensate Return Lines to Conden <365 CS Continuous SSB Condensate TK-104-1A sate Return Lines 2" CNP-164-D3, Condensate Return TK-104- Conden <365 CS Continuous SSB 2" CNP-184-D3 1A/P-151-1A/B to Cond. B sate Cooling from 8'WCS, 8"WCR HE-101-1A Condenser Water <175 CS Continuous T NS Condensate Cooling Supply and Return System Page 37 of 42 yY-RPT-05-OOO1 2 Revision 0 VY-RPT-05-00012 Page 37 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Proqram - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2)

VY-E-7"01 Advanced Off 12-OGE-100-Gl Off Gas Process Line from Gas/ 273 to CS Continuous SNM 33600-A-202 Gas (AOG) 12-OGE-101A-G1 OG-557 to Steam Mixing Tee Steam 655 33600-A-208 12-OGE-102A-G1 ED-IOO-1B to HE-101-1B 12-OGE-103A-J1 VY-E-75-001 Advanced Off Remaining AOG Remaining AOG Process Gas <175 CS Continuous T NS 33600-A-202 Gas (AOG) Process Lines Lines 33600-A-208 except steam supply Steam Supply 4-MS-191B-D3 Steam to MS-i100-1 B Steam 365 CS Continuous SNM 11/2" -MS-136B-D3 Steam to HE-1 00-1 B Steam 365 CS Continuous SSB 2-MS-138B-G1 Steam to ED-1 00-1 B Mixing Steam 365 CS Continuous SSB Tee I Cooling from 8"WCS Condenser Cooling Supply to Water <175 CS Continuous T NS Condensate HE-101-1B and HE -101-1A System Steam / 1/2",1",2" CNP Condensate Return Lines to Conden <365 CS Continuous SSB Condensate TK-104-1A sate Return Lines VY-E-75-001. AOG Off Gas All Off Gas Drying Trains A & B Gas CS Continuous NW NS 33600-A-202 Drying A & B 33600-A-209 33600-A-210 Steam / 1" CNP & smaller Condensate Return Lines to Conden <365 CS Continuous SSB Condensate TK-104-1A sate Return Lines I VY-E-75-001 AOG All Charcoal Beds Gas CS Continuous NW NS 33600-A-202 Charcoal 33600-A-211 Off Gas System Condensate 1/2", 1",2" CNP Closed Loop Condensate Water <175 CS Continuous T NS Return Lines Return Lines Adsorber Bed 11/22" VRE-171-G1 Drain to Sample Collection Water <175 CS Continuous T NS Drains Tank and to Cond, B VY-E-75-001 AOG Chiller All Water Chiller System Skid Water/ <175 CS Continuous T,NW NS 33600-A-202 System Piping. Refrig.

33600-A-213 33600-A-216 AOG Steam 3"-SH & Smaller Supply Piping for 30Lb. Steam* 365 CS Continuous SSB Reheat I Steam to Steam Reheat Coils I Page 38 of 42 VY-RPT-05-00012 Revision 0 VY-RPT-05-00012 Revision 0 Page 38 of 42

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2) 33600-A-216 AOG Steam 2"-CNH & Smaller, Condensate Return Piping Conden -<365 CS Continuous SSB Reheat 2" HSCR & from Steam Traps and Steam sate Smaller Reheat Coils.

33600-A-217 AOG Steam 4"-MS-137-D3 Supply Piping for 30Lb. Steam 365 CS Continuous SSB SB Location Turbine Bldg. Steam to Steam Reheat Coils Nos. 73,74,75 33600-A-217 AOG Steam 6"-SRV-7B Relief Valve Disch to line 6"- Steam. 365 CS No Flow U NS Turbine Bldg. SRV-7B 33600-A-217 AOG Steam 3/4-HCN188-H1 Drains to 3"-MSD-4 from Conden <540 A335- Continuous M NS SB Locations Turbine Bldg. 3 A-MS-189-D3 steam traps at pressure sate P11 74,75,76,77 MS-1l13A-1 A reducing station. Replaced in MS-115A-1A 1998 (Note 4) 5920-1068 Instrument Air All Internal piping to Instrument Air, Continuous NW NS Dryer Air Dryer Water Vapor 5920-0870 HPCI Turbine All HPCI Turbine Skid Oil Piping Oil CS Intermittent NW NS Oil Piping (with turbine operation) 5920- Station Air All Internal piping for Station Air, Continuous NW NS 11015 Compressors Air Compressors Water Vapor 5920- Turbine (GE) 10", 12" SSH Turbine Steam Seal Supply Steam 225 CS Continuous SNM 12598 Steam Seal Header (SSH) 5920- Turbine (GE) 8" 1SSH1 HP Turbine N1 Packing to Steam 225 CS Continuous SNM 12598 Steam Seal SSH 5920- Turbine (GE) 6" 2SSH2 HP Turbine N2 Packing to Steam 225 CS Continuous SNM 12598 Steam Seal __SSH 5920- Turbine (GE) 5" 1SSH3 SSH supply to LP Turbine Steam 225 CS Continuous SNM 12598 Steam Seal N3 Packing 5920- Turbine (GE) 8" SSH Common SSH supply to LP Steam 225 CS Continuous SNM 12598 Steam Seal Turbine N4 & N5 Packings 5920- Turbine (GE) 5"1 SSH4 SSH supply to LP Turbine Steam 225 CS Continuous SNM 12598 Steam Seal N4 Packing 5920- Turbine (GE) 5" 1SSH5 SSHsupply to LP Turbine Steam 225 CS Continuous SNM 12598 Steam Seal N5 Packing 5920- Turbine (GE) 5" 1SSH6 SSH supply to LP Turbine Steam 225 CS Continuous SNM 12598 Steam Seal N6Packing 5920- Turbine (GE) 2,3-1/2 From N1 Packing to SPE Steam/ 195 CS Continuous SNM 12598 Steam Seal 2SPE1 Header Water VY-RPT-05-00012 Revision 0 Page 39 of 42 1, .: I I

Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2) 5920- Turbine (GE) 4 3SPE2 From N2 Packing to SPE Steam/ 195 CS Continuous SNM 12598 Steam Seal Header Water 5920- Turbine (GE) 6 2SPE3 From _J3 Packing to SPE Steam/ 195 CS Continuous SNM 12598 Steam Seal Header Water 5920- Turbine (GE) 6 2SPE4 From N4 Packing to 10" SPE Steam/ 195 CS Continuous SNM 12598 Steam Seal common riser Water 5920- Turbine (GE) 6 2SPE5 From N5 Packing to 10" SPE Steam/ 195 CS Continuous SNM 12598 Steam Seal common riser Water 5920- Turbine (GE) 10, SPE 6 Common riser from N4 & N5 Steam/ 195 CS Continuous SNM 12598 Steam Seal Packings to SPE Header Water 5920- Turbine (GE) 6 2SPE6 From N6 Packing to SPE Steam/ 195 CS Continuous SNM 12598 Steam Seal Header Water 5920- Turbine (GE) 8,10,16 SPE Steam Packing Exhauster Steam/ 195 CS Continuous SNM 12598 Steam Seal Water 5920- Turbine 1-1/2" & 3" Stop Valve first seal leakoff Steam <540 CS Continuous SSB SB Locations 12598 Steam Seal 1SLMSV lines to SSL Nos. 78 to 82 5920- Turbine 1" & 3" 2SLMSV Stop Valve second seal Steam <540 CS Continuous SSB SB Locations 12598 Steam Seal leakoff lines to SPE Nos. 88 to 90 5920- Turbine 1-1/2" 1SCVL Control Valve first seal leakoff Steam 390 CS Continuous SSB SB Locations 12598 Steam Seal to 36" Cross around Nos. 83 to 87.

5920- Turbine 2-1/2" 2SCVL Control Valve second seal Steam 320 CS Continuous SSB SB Locations 12598 Steam Seal leakoff to SSH Nos. 91 to 95 5920- Turbine 2" 3SCVL Control Valve third seal Steam <320 CS Continuous SSB 12598 Steam Seal leakoff to SPE 5920- Turbine 1/2",2" 1SLBPV Bypass Valve first seal leakoff Steam 390 CS Continuous SSB SB Locations 12598 Steam Seal to 36" Cross Around Nos. 96 to 106.

See Note 11 5920- Turbine 1",2-1/2" 2SLBPV Bypass Valve second seal Steam 320 CS Continuous SSB SB Locations 12598 Steam Seal leakoff to SSH Nos. 107 - 109 5920- Turbine 1",2-1/2" 3SLBPV Bypass Valve third seal Steam <320 CS Continuous SSB 12598 Steam Seal leakoff to SPE 5920- Turbine 2-1/2" 1SPL2 HP Turbine pocket drain to Steam 540 CS Continuous SSB SB Locations

.12598 Steam Seal 36" Cross Around Nos. 110 -115 5920- Turbine 1" 1SLCIV CIV Intercept Valve first seal Steam <382 CS Continuous SSB 12598 Steam Seal (4 lines total) leakoff to SSH 5920- Turbine 1" 2SLCIV CIV Intercept Valve second Steam <382 CS Continuous SSB 12598 Steam Seal (4 lines total), seal leakoff to SSH 5920- Turbine 1" CIV Intermediate Stop Valve Steam <382 CS Continuous SSB 12598 Steam Seal (4 lines total) seal leakoff to SPE VY-RPT-05-00012 Revision 0 Page 40 of 42

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Vermont Yankee Piping Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summarv of Line bv Line FAC Susceptibility Screenina Drawing System Line No(s). Description Fluid Oper. Material Flow at Full Exclusion Susceptibility Notes No. Temp Power (Note 1) Classification (F) Operation (Note 2) 5920- Turbine 1" CIV Intermediate Stop Valve Steam <382 CS Continuous SSB 12598 Steam Seal (4 lines total) seal leakoff to SPE 5920- Turbine 1" SLSSR Steam Seal Regulator to SPE Steam <540 CS Continuous SSB 12598 Steam Seal 5920- 12857 H2 & Air All H2 System Injection Process H2, Air <150 SS Continuous NS SH.1 Injection Module 5920- 12857 H2 & Air All H2 System Injection Process H2, Air <150 SS Continuous NS SH.2 Injection Module 5920- Off Gas All Off-gas Monitoring Panel Offgass, <150 SS Continuous NS 12858 Monitor H2, 02, N2 TABLE 2.0 NOTES:

1. Key to Exemption Reasons:

M = Stainless or low alloy FAC resistant material (Section 5.1.1)

Q = Superheated steam (5.1.2) 02 = High dissolved oxygen or Raw Water (5.1.3)

T = Single phase system operation below 175F (5.1.4)

U = No flow, or operating less than 2% or total time (5.1.5)

NW = Fluid other than water or wet steam (5.1.6)

2. Key to be Susceptibility Classification NS = Non Susceptible.

SMC = Susceptible Large Bore - Modeled using CHECWORKS.

SNM = Susceptible Large Bore - Not Modeled.

SSB = Susceptible Small Bore

3. Non Susceptible using NSAC 202L-R2 Exclusion Criteria. However Large bore line has been modeled using CHECWORKS.

Specific locations on the small bore lines have been included in the Small Bore Location data base.

4. Original piping was carbon steel. Replaced with FAC resistant material.

5. Piping screens out based on no flow (normally closed valves). Line is included in Program Scope based on past leakage through the valves.

6. Normally closed small bore equipment vents, drains, and level control instrument lines along with sampling lines are automatically excluded due to No Flow condition.

VY-RPT-05-O0012 Revision 0 Page 41 of 42 I 1 1

Vermont Yankee PiDing Flow Accelerated Corrosion Inspection Program - FAC Susceptibility Review TABLE 2: Summary of Line by Line FAC Susceptibility Screening TABLE 2.0 NOTES: - continued

7. Lines 10" MS-3A to 10"MS-3J, Turbine Bypass Valve Discharge lines to the main condensers: Flow from MS lines only during startup, testing, or transients and would screen out as NS based on Usage < 2% of time. However, warming steam continuously flows from line 36 'CAR C via the BPV 1st seal leakoff line 1SLBPV per GEK 17999A, Reference 22.

8. Line is included in AST post DBA Alternate Leakage Treatment Boundary, reference VYDC-2003-016. These lines along with the condenser have been seismically evaluated and are required to remain intact during and after a SSE. See Reference 23.

9. Min Flow line screens as Non-Susceptible based on Usage and/or Temperature. However, there has been industry experience (IE) with wall loss downstream of restriction orifices on Min Flow lines. Include piping downstream of restriction orifices as Susceptible to FAC.

10. Upstream components have been replaced with FAC resistant materials. Noted here for potential of increased wear rates due to "Leading Edge Effect".

11. Turbine Bypass valve Chest 1st Seal Leakoff piping line 1SLBPV is currently scheduled for replacement with FAC resistant material during RFO 25. Refer to Engineering Request' No. 04-0964. This line will be considered as susceptible to FAC until replacement is complete.

12. Upstream piping was supplied with LAS replacement casings and is considered as part of the LP turbine. Piping downstream of each the Restriction Orifices was removed. See drawing 5920-568 (Pending Change for VYDC 2003-006, J.O. 2003-038).

Page 42 of 42 VY-RPT-05-00012 Revision 0 VY-RPT-05-00012 Page 42 of 42

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