ML18155A454

Updated Safety Analysis Report (USAR) Revision 35, Section 10, Plant Auxiliary Systems

ML18155A454
Person / Time
Site:	Prairie Island
Issue date:	05/18/2018
From:	Xcel Energy, Northern States Power Company, Minnesota
To:	Office of Nuclear Reactor Regulation
Shared Package
ML18155A439	List: L-PI-18-018, Updated Safety Analysis Report (USAR) Revision 35, Appendix I, Postulated Pipe Failure Analysis Outside of Containment ML18155A440 ML18155A445 ML18155A446 ML18155A447 ML18155A448 ML18155A449 ML18155A450 ML18155A451 ML18155A452 ML18155A453 ML18155A454 ML18155A455 ML18155A456 ML18155A457 ML18155A465 ML18155A466 ML18155A467 ML18166A204 ML18166A205 ML18166A206 ML18166A208 ML18166A209 ML18166A210
References
L-PI-18-018
Download: ML18155A454 (235)

Text

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 35 Page i SECTION 10 PLANT AUXILIARY SYSTEMS TABLE OF CONTENTS Page PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 35 Page ii TABLE OF CONTENTS [Continued]

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PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 35 Page iv TABLE OF CONTENTS [Continued] LIST OF FIGURES

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 35 Page v TABLE OF CONTENTS [Continued] LIST OF FIGURES PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 35 Page vi TABLE OF CONTENTS [Continued] LIST OF FIGURES

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 31 Page 10.1-1 SECTION 10 PLANT AUXILIARY SYSTEMS 10.1

SUMMARY

DESCRIPTION

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-1 10.2 REACTOR AUXILIARY SYSTEMS 10.2.1 Fuel Storage And Fuel Handling Systems

10.2.1.1 Design Basis

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-3 eff eff

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10.2.1.2 Description PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.2.1

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10.2.1.2.1 Major Structures Required for Fuel Handling

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10.2.1.2.2 Major Equipment Required for Fuel Handling

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-18 10.2.1.2.3 Refueling Sequence of Operation

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-19 10.2.1.3 Performance Analysis

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10.2.1.4 Inspection and Testing

10.2.1.5 Spent Fuel Consolidation Demonstration Project 10.2.1.5.1 Introduction

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-24 10.2.1.5.2 Safety Evaluation

10.2.1.5.2.1 Criticality

10.2.1.5.2.2 Thermal Hydraulic

10.2.1.5.2.3 Radiological Consequences of Handling Accidents

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-25 10.2.1.5.2.4 Rack Structural Analysis 10.2.1.5.3 Demonstration Results

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-1 10.2.2 Spent Fuel Pool Cooling System 10.2.2.1 Design Basis 10.2.2.2 Description

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-2

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-3 10.2.2.3 Performance Analysis

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-1 10.2.3 Chemical and Volume Control System

10.2.3.1 Design Basis

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-5 10.2.3.1.1 Generic Letter 87-02

10.2.3.2 Description

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10.2.3.2.1 Expected Operating Conditions 10.2.3.2.2 Reactor Makeup Control

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-14 10.2.3.2.3 Charging Pump Control

10.2.3.2.4 Components

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10.2.3.3 Performance Analysis 10.2.3.3.1 Availability and Reliability

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-28 10.2.3.3.2 Control of Tritium

10.2.3.3.3 Leakage Prevention

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10.2.3.3.4 Incident Control

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10.2.3.3.5 Malfunction Analysis

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10.2.3.3.6 Deleted 10.2.3.3.7 Fuel Element Failure Detection

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-1 10.2.4 Residual Heat Removal System 10.2.4.1 Design Basis

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-2 10.2.4.2 Description

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-3 10.2.4.2.1 Components

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-4 10.2.4.3 Performance Analysis

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-1 10.2.5 Reactor Makeup Water Deoxygenation System 10.2.5.1 Design Basis 10.2.5.1.1 Codes and Classifications

10.2.5.2 Description

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-2 10.2.5.2.1 Components 10.2.5.3 Performance Analysis 10.2.5.3.1 Instrumentation and Controls

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10.3.1.2.2 Deleted 10.3.1.2.3 Emergency Communication and Lighting Systems 10.3.1.2.4 Administrative Controls

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10.3.1.5.2 deleted per 98090 PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.3-6 10.3.2 Auxiliary Building Normal Ventilation Systems 10.3.2.1 Design Basis

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10.3.3 Control Room Ventilation System 10.3.3.1 Design Basis

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10.3.3.2 System Description 10.3.3.2.1 Control Room Envelope

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10.3.3.2.2 Control Room Ventilation System

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10.3.3.3 Performance Analysis 10.3.3.3.1 Design Evaluations 10.3.3.3.1.1 Radiological Analysis PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.3-11 10.3.3.3.1.2 Toxic Chemical Analysis 10.3.3.3.1.3 Smoke

10.3.3.3.2 Equipment Performance Capabilities 10.3.3.3.2.1 Automatic Actuation

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10.3.3.3.2.2 Air Handling Units

10.3.3.3.2.3 Clean-Up Fans

10.3.3.3.2.4 PAC Filters

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10.3.3.3.2.6 Unfiltered Inleakage

System Configuration Inleakage Rate (cfm)

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10.3.4 Auxiliary Building Special Ventilation System (Category I Ventilation Zone) 10.3.4.1 Design Basis

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10.3.4.2 Description

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10.3.4.2.1 Doors

10.3.4.2.2 Fans 10.3.4.2.3 Filter Assemblies PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.3-17

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10.3.4.4 Inspection and Testing PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.3-19

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10.3.5.2.1 Components

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10.3.6 Emergency Lighting

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10.3.7.2 Description

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10.3.9 Technical Support Center Air Conditioning System 10.3.9.1 Design Basis PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.3-28 10.3.9.2 Description

10.3.9.3 Performance Analysis

10.3.10 Compressed Air System 10.3.10.1 Design Basis

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10.3.10.2.2 System Operation

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10.3.10.3 Performance Evaluation

10.3.11 Post Accident Sampling System

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10.3.13 Fuel Oil System 10.3.13.1 Design Basis 10.3.13.1.1 Function

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10.3.13.1.2.2 Unit 2

10.3.13.2 Description 10.3.13.2.1 Unit 1

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10.3.13.2.2 Unit 2

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10.3.13.3 Performance Analysis 10.3.13.3.1 Unit 1

10.3.13.3.2 Unit 2

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10.3.13.5 Instrumentation and Control 10.3.13.5.1 Unit 1 10.3.13.5.2 Unit 2

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10.4.1.2.1 Auxiliary Building and Containment Chilled Water System PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.4-7

10.4.1.2.2 Emergency Cooling Water Intake

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06)

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10.4.1.2.4 System Functionality Following a Seismic Event

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10.4.1.3 Performance Analysis

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10.4.2.4 Inspection and Testing 10.4.3 Safeguards Chilled Water System 10.4.3.1 Design Basis 10.4.3.1.1 Function

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10.4.3.3 Performance Analysis 10.4.3.3.1 Unit Cooler Heat Removal Rates PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.4-27 10.4.3.3.2 Single Failure Considerations

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10.4.3.3.3 Seismic Adequacy

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10.4.3.4 Testing and Inspection 10.4.3.5 Instrumentation and Control PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.4-30

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10.5.2 Methods of Decontamination

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10.5.3 Decontamination Facilities

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10.6 REFERENCES

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PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision35 Page 10.6-8 THIS PAGE IS LEFT INTENTIONALLY BLANK

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 23 TABLE 10.2-1 FUEL HANDLING DATA PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 23 TABLE 10.2-2 REACTOR AUXILIARY AND PLANT COOLING SYSTEMS CODE REQUIREMENTS PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 31 TABLE 10.2-3 SPENT FUEL POOL COOLING SYSTEM COMPONENT DATA

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 31 TABLE 10.2-3 SPENT FUEL POOL COOLING SYSTEM COMPONENT DATA PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 31 TABLE 10.2-3 SPENT FUEL POOL COOLING SYSTEM COMPONENT DATA PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 31 TABLE 10.2-3 SPENT FUEL POOL COOLING SYSTEM COMPONENT DATA

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 35 TABLE 10.2-4 FAILURE ANALYSIS OF COMPONENTS Components Malfunction Comments and Consequences

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 35 TABLE 10.2-4 FAILURE ANALYSIS OF COMPONENTS Components Malfunction Comments and Consequences

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 35 TABLE 10.2-4 FAILURE ANALYSIS OF COMPONENTS Components Malfunction Comments and Consequences

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 5 TABLE 10.2-5 CHEMICAL AND VOLUME CONTROL SYSTEM CODE REQUIREMENTS PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 5 TABLE 10.2-5 CHEMICAL AND VOLUME CONTROL SYSTEM CODE REQUIREMENTS

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 32 TABLE 10.2-6 PRINCIPAL COMPONENT DATA

SUMMARY

QuantityHeat Transfer Btu/hr Letdown Flow lb/hr Letdown T F Design Pressure psig Design Temperature F QuantitType Nominal Capacity Each gpm Head ft Design Pressure psig Design Temperature F

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 32 TABLE 10.2-6 PRINCIPAL COMPONENT DATA

SUMMARY

Quantity 1 Type Volume, Each Gal. Design Pressure psig Design Temperature F Quantity 1 Type Resin Volume ft 3 Flow gpm Design Pressure psig Design Temperature F

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 34 TABLE 10.2-7 CHEMICAL AND VOLUME CONTROL SYSTEM PERFORMANCE REQUIREMENTS*

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 22 TABLE 10.2-8 MALFUNCTION ANALYSIS OF CHEMICAL AND VOLUME CONTROL SYSTEM Component Failure Comments and Considerations

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 22 TABLE 10.2-8 MALFUNCTION ANALYSIS OF CHEMICAL AND VOLUME CONTROL SYSTEM Component Failure Comments and Considerations

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 24 TABLE 10.2-9 RESIDUAL HEAT REMOVAL SYSTEM COMPONENT DATA PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 24 TABLE 10.2-9 RESIDUAL HEAT REMOVAL SYSTEM COMPONENT DATA PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 34 TABLE 10.2-10 REACTOR MAKEUP WATER DEOXYGENATION SYSTEM COMPONENT DATA

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 0 TABLE 10.3-1 SAMPLING SYSTEM CODE REQUIREMENTS

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 18 TABLE 10.3-2 SAMPLING SYSTEM COMPONENTS Sample Heat Exchanger General Shell Tubes PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 18 TABLE 10.3-2 SAMPLING SYSTEM COMPONENTS Sample Cylinders Manual Pressure Reducing Valves Piping

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 23 TABLE 10.3-3 MALFUNCTION ANALYSIS OF SAMPLING SYSTEM Sample Chains Malfunction Comments and Consequences

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 34 TABLE 10.4-1 COOLING WATER REQUIREMENTS FOR SINGLE UNIT OPERATION IN GPM Note: Mode 1, Power Operation or Mode 2, Startup Mode 3, Hot Standby Normal Cooldown Slow Cooldown

• PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 22 TABLE 10.4-2 COMPONENT COOLING SYSTEM COMPONENT DATA PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10 Revision 22 TABLE 10.4-2 COMPONENT COOLING SYSTEM COMPONENT DATA

PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 32 TABLE 10.4-2a COMPONENT COOLING SYSTEM, NOMINAL MODE FLOW RATES AND DUTY (Note 1) UNIT 1 OR UNIT 2 Start-up Mode 1, Power Operation Mode 2, Startup Mode 3, Hot Standby Mode 4, Hot Shutdown Mode 5, Cold Shutdown GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 32 TABLE 10.4-2a COMPONENT COOLING SYSTEM, NOMINAL MODE FLOW RATES AND DUTY (Note 1) UNIT 1 OR UNIT 2 Start-up Mode 1, Power Operation Mode 2, Startup Mode 3, Hot Standby Mode 4, Hot Shutdown Mode 5, Cold Shutdown GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR AB PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 32 TABLE 10.4-2b COMPONENT COOLING SYSTEM, NOMINAL DBA MODE FLOW RATES AND DUTY (Note 2 & 3) UNIT 1 UNIT 2 DBA-Immediate DBA-Interim DBA-Long Term Mode 2, Startup GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR * *

• PRAIRIE ISLAND UPDATED SAFETY ANALYSIS REPORT USAR Section 10Revision 32 TABLE 10.4-2b COMPONENT COOLING SYSTEM, NOMINAL DBA MODE FLOW RATES AND DUTY (Note 2 & 3) UNIT 1 UNIT 2 DBA-Immediate DBA-Interim DBA-Long Term Mode 2, Startup GPM BTU/HR GPM BTU/HR GPM BTU/HR GPM BTU/HR A B

01516979 CAD FILE: U10204.DGN FIGURE 10.2-4 REV. 34 1-SF-22 6-SF-3A SUCTION D I S CHA R G E DRAIN FLOOR V V 1-SF-21 V HI HI LO 4-SF-7 HI HI LO V D DRAIN CASING SUCTION 4" 2" DRAIN 1" DISCHARGE 2" P D V V V D V D D V SAMPLE LOCAL V V V V V D F F 2" 2" F F 11256 11257 1-SF-37-" F-"-SF-39-"-SF-15 1-SF-36-" 2-SF-9 B 1-SF-34-" 1-SF-35-" D 2-SF-9B 2-SF-9A-" 2-SF-9C 2-SF-9C 1-SF-40-" 1-SF-41-" 2-SF-9 C 1-SF-42 D 1-SF-43"" 2-SF-9C 27032 18218" 2-SF-9C 2-SF-9C-SF-45-" 1-SF-32 D-"-" 3-SF-10 1-SF-47-" 2-SF-9A 2-SF-9 A 2-SF-9B 2-SF-9B 2-SF-9B 2-SF-17 1-SF-33-" 2-SF-9 B F D-" F F F F F V-" V 2-SF-49-" 3-SF-12B-SF-13-SF-38 2-SF-11 A 3-SF-12 A 2-SF-12A 11255 F-SF-46 1-SF-46-"-SF-14 CONN CLNG SUCT 2-SF-118 8-SF-1 16670 2-SF-12A T640 8-SF-5 C 8-SF-5 B 2-SF-11 B 2-SF-11 B 8-SF-5 A 1-SF-29-" 2-SF-5A 8-SF-5 A 16660 T635 8-SF-5 A 8-SF-5 A 11258 12153 8-SF-5A 2-SF-5A 1-SF-26-" 4-SF-8 4-SF-1 1-SF-30-" 8-SF-1 8-SF-1 8-SF-1 1-SF-18-" D S 2-SF-5A 1-SF-28-" V-SF-4 1-SF-25-"-SF-5-SF-5A-" 8-SF-4 8-SF-4 1-SF-27-" 4-SF-6 8-SF-53-" 2-SF-9A 1-SF-44-" 1-SF-31-" D 8-SF-4 1-SF-23 2-SF-52 2-SF-51-SF-4 6-SF-2A 1-SF-20 1-SF-24 6-SF-3 B-" D 1-SF-19-" D S 6-SF-2B 11668 11254 4" 4"-SF-21 11667 11253-"-"-"-"-" D D-" D-" D"""-" NOTES 7 & 8 2-SF-9A 2-SF-9 A 2-SF-9C 18233 2-SF-50" NOTE 6 STRNR (TYP)STRAINERS TEMPORARY"" NOTE 6 STRNR 2-SF-16 10" A-10 NF-39242 058-042 E-2 XH-1-40 8-SF-5 A NOTE 9 2-SF-4""" LEGEND E-3 NF-39245-2 E-2 NF-39245-2 REACTOR FUEL POOL CLEAN-UP SYSTEM PMP CLN UP FUEL POOL 11 DPI SKM FLTR SF PIT 121 073-011 (III/3)SKM 073-012 (III/3)SKM CNL XFER 045-102 (III/3)PMP SF PIT 122 CLN UP PMP FUEL POOL 21 FUEL POOL UNIT 2 REACTOR 3" 2""" 2" 2"" 22 23" 2" 3" 2" 2"" 24 21 REACTOR FUEL POOL CLEAN-UP SYSTEM 058-021 (III/3)STRNR SF PIT SKM 045-081 (III/3)SKM PMP 121 023-011 (III/3)DEMIN SF PIT 121 FUEL POOL UNIT 1 REACTOR 14 13 12 11 069-021 (III/3)SKM FLTR""" 2" 2" 3"" 2""""" 2"""" 2""" CLN UP FLTRS FUEL POOL 069-031 (III/3)FLTR SF PIT 121 069-032 122 069-033 123 2-SF-9A 2-SF-9 A"""}""-" 045-101 (III/3)PIT PMP 121 SF "-SF-48 1-SF-48 058-041" 1"" 1"" 2" (III/3)SF PIT FLTR NF-39237 - CS SYSTEM FLOW DIA UIT 1 & 2 NF-39242 - DE SYSTEM FLOW DIA UNIT 1 & 2 NF-39245 CC SYSTEM FLOW DIA UNIT 1 NF-39248 - WL SYSTEM FLOW DIA UNIT 1 & 2 XH-1 VC SYSTEM FLOW DIA UNIT 1 XH-1 VC SYSTEM FLOW DIA UNIT 1 & 2

-"-" D-3 D-9 WTR PURIF PMP FROM 11 RFLG WTR PURIF PMP FROM 21 RFLG XH-1 SI SYSTEM FLOW DIA UNIT 1 XH-1001 SI SYSTEM FLOW DIA UNIT 2 B-5 XH-1-40 TO CVCS HU TNK D-9 NF-39248 TO ARTD WST E-11 NF-39236 FLSH LN TO RSN D-2 NF-39242 FROM RMW E-6 XH-1-39 FROM BA BLNDR C-6 NF-39248 TO ARTD WST C-6 NF-39248 TO ARTD WST 8-SF-54 2852502 SF-6-1 PI 11933 DPI 18380 SF-7-4 SF-4-9 SF-5-4 DPI 18379 SF-4-8 SF-7-3 SF-4-7 DPI 18378 SF-7-2 SF-4-4 SF-5-2 DPI 18377 SF-4-3 SF-7-1 SF-4-1 SF-4-2 SF-5-1 PI 637 PI 638 SF-15-20 SF-15-22 SF-15-29 SF-15-23 SF-14-8 FE 636 FI 636 SF-15-28 SF-14-14 DPI 18476 PI 11999 DPI 18477 DPI 18478 DPI 18479 DPI 18480 DPI 18475 DPI 11399 PI 643 DPI 11398 LA 639 TE 640SF-8-6 SF-3-1SF-3-2SF-8-1 SF-14-3 TE 635 LA 634 TI 633 PI 632 SF-365-6 SF-9-5 SF-8-2 SF-8-5 SF-9-6 SF-15-25 SF-26-1 SF-15-11 SF-16-4 SF-15-12 SF-16-3 SF-29-1 SF-8-4 SF-16-7 SF-16-17 SF-8-3 PI 642A SF-15-27 SF-2-3 SF-11-1 SF-29-2 SF-16-16 SF-2-2 PI 642B SF-17-1 PI 11338 SF-165-1 SF-365-7 PI 641A PI 631A SF-27-1 SF-365-1-SF-20 SF-15-7 SF-26-2 PI 11524 SF-165-4 PI 631B PI 641B FI HI LO S REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$

$$$$$$SYDATE$$$$$$

REV DWN DATE CHECKED PROJECT NO.

APP'D & CERT.

MDZ 4-11-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO.

GROUP 8630 100 350 5 6 9040 J109 4920 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 80 by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's.

This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSP GENERATION CAD FLOW DIAGRAM SPENT FUEL COOLING SYSTEM UNITS 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 XH-1-29 XH-1-29 XH-1-29.DGN SF-19-1 NOTES: 3. DENOTES CATEGORY I VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS.

I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED.

DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.)

STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS D SF-4-6 SF-5-3 FLR DRN 3" 4" 3" STRNR DPI 121 SF PIT REF DWGS C3 NSR C3 NSR NSR C3 A-8 XH-1-45 RWST TO 11 A-7 XH-1001-7 RWST TO 21 NF-39237 C-5 NF-39248 TO ARTD WST C-5 NF-39248 TO ARTD WST D-5 NF-39242 FROM DEMIN WTR IB IC C3 CLASS BREAK QA TYPE IC III III IC III IC QA TYPE III UNLESS OTHERWISE NOTED

11. ALL PIPE ON THIS DWG TO BE IA,IB,IC,IIA,IIB AND III DENOTES PIPING QA TYPES 035-012 (III/I)122 SF PIT HX 035-011 (III/I)121 SF PIT HX DWN: JEK 1-24-14 CHK'D: CMR 1-29-14 AS BUILT-78 MOD#: EC-19642 CORRECTED VLV NO. FOR DPI-18476 FROM SF-131-9 TO SF-131-7 & RSN FILL TNK TO RSN FILL LINE FOR PER DRR PI-14-020 APP'D: CMR 1-29-14 121 SF PIT DEMIN.

2852501 2852402 2852401 CONSTRUCTION ISSUED FOR ADDED SFP LEVEL INDICATORS.

PETER J. OGNENOFF 10-15-14 PE# 48068 MOD#: EC-23555 79 REVIEWED: AD 10-15-14 AS BUILT-MOD#: EC-23555 DWN: JEK 6-16-15 CHK'D: BT 6-17-15 DWN: AD 10-15-14 CHK'D: ESR 10-15-14 RECORD TRACING.

TRANSFERRED TO CERTIFIED REV. 79 , DRR PI-15-075 REV. 79 PER INCORPORATED A/E's PE CERT: APP'D: KJW 6-17-15 APP'D: PJO 10-15-14

-"-""80" DWN: DB 12-23-15 CHK'D: RLM 1-5-16 AS BUILT-80 MOD#: EC-24595 REV DRN LN CONFIG ADDING

-" TUBE ADPT. REV SMPL NOTE. DELETING IN LINE VLV'S & DOTTING TUBING.

PER DRR PI-15-210 APP'D: KJW 1-6-16 NO 1 SF PIT NO 2 SF PIT SF-25-1 SF-24-1 SF-16-9 V SF-4-10 V V SF-4-5 V SF-15-21 SF-365-4 SF-16-5 SF-16-6 SF-14-10 SF-14-9 SF-365-5 SF-14-11SF-15-19 SF-15-18 SF-15-17 SF-15-15 SF-365-9 SF-14-31 SF-14-20 SF-14-21 SF-23-4 SF-14-6 SF-14-15 SF-15-14 SF-12-1 SF-28-1 SF-14-19 SF-14-17 SF-14-16 SF-15-24 SF-14-18 SF-14-29 SF-14-28 SF-14-26 SF-131-7SF-16-15 2SF-6-1 2SF-24-1 2SF-16-9 V 2SF-4-2 2SF-4-1 2SF-7-1 2SF-5-1 V 2SF-4-5 2SF-4-4 2SF-7-2 2SF-5-2 2SF-4-3 V 2SF-4-7 2SF-4-6 2SF-7-3 2SF-5-3 V 2SF-4-9 2SF-7-4 2SF-5-4 2SF-4-8 2SF-4-10 SF-16-10 SF-131-8 SF-16-13 SF-131-5 SF-16-14 SF-16-11 SF-131-6 SF-16-12 SF-14-27 SF-14-23 SF-14-25 SF-14-22 SF-15-1 SF-16-1SF-131-3 SF-131-4 SF-14-1 SF-365-3 SF-15-2 SF-165-2 SF-165-3 SF-16-2 SF-14-2 SF-15-3 SF-14-4 SF-14-5 SF-13-1 SF-15-4 SF-15-5 SF-131-1 SF-14-7 SF-14-12 SF-14-13 SF-14-30 SF-14-32 SF-15-13 SF-15-16 SF-15-9 SF-14-34 SF-14-33 SF-16-8 SF-131-2 SF-26-3 SF-15-10 SF-15-26 SF-26-4 SF-15-8 SF-27-2 SF-365-2 SF-365-8 SF-15-6 6.10.WATER LEVEL P - DENOTES PURGE CONNECTION.

SF-14-24 7.SF-365-10 DRILL INCH HOLE 4 FEET BELOW NORMAL 2-2 C S-13 2-C S-13 8.9.SF-131-9 SF-131-10 WATER LEVEL.

TERMINATE PIPE 10 FEET BELOW NORMAL WATER LEVEL LOCATE STRAINER 4 FEET BELOW NORMAL TRANSFER CANAL.

TERMINATE PIPE NEAR BOTTOM OF FILL LINE RSN LCL SMPL 01516979 CAD FILE: U10205.DGN FIGURE 10.2-5 REV. 34 178 1FT 177 1FT NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS.

I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED.

DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.)

STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES.

IB NSR III 198 1PT 173 1PT 174 1PT 199 1PT 1-8115 2-VC-3A 1-8140A 1-8140B 1-8141 D HI 127 127 1TE 1-8102 T 1-8147 1TI 126 1TE 126 1-8142 1-8143 123 1-8144 1PI 121 1PT 121 1TI 1TE 122 122 T 1-8100A D 1FI 1FE 115B 115 1FI 1FT 115A 115 SHIELD BLDG.

V V V D 1-8148B 2-VC-24B V LO 1FE 180 176 V 1-8145 1-8146 L U T 1-8100B 1-8116 V 132 HI LO 1PT 131 131A 1PI 131B 1TE 132 1TE 181 1-8149A V 1FM 178 1PT 124 124B 1PI 1TE 182 1TE 125 125 1PI 124A LO D D D V D 179 1FE 175 LO D 2-VC-24A-VC-24A V 1-8148A V V 1-8149B-" NOTE 6 2-VC-17B 2-VC-1-VC-3A VC-16-67 VC-26-1 2-V C-2-VC-107 VC-16-8 VC-16-86 VC-16-3 2-V C-2 31327 CV-VC-110 80GPM ORLD3 2-V C-2 31326 CV-VC-109 2-VC-3A VC-16-9 31325 CV 2-VC-3A 2-VC-3A 15172 4105301-VC-108 VC-16-7 V-V C-106 VC-16-6 41115 15171 VC-16-2 VC-8-2 VC-8-3 31328 CV 2-VC-5 31329 CV 2-V C-3 A-VC-3A 32234 MV M VC-16-63 VC-16-64-VC-3A VC-16-65 31339 CV-V C-3 B VC-16-11 2-VC-199 2-VC-3B VC-7-20 11 2-VC-6 12 14 13A 13B VC-8-1 VC-16-1 3-VC-11B 1-V C-114 VC-15-12 M 32166 MV M 32199 MV 1-V C-117 V C-15-11 31330 CV-V C-111 RC-8-3 D-VC-112 VC-16-12 1-VC-7 1-VC-9-V C-113 VC-15-13 4302503 31210 CV 1-VC-10A-V C-10 A 41057 21133 VC-195-6 41049 15173 1-V C-118 VC-15-9 1-V C-119 VC-15-10 3-VC-11A 1-V C-10 B D 1-V C-10 A VC-15-14 V-VC-14-VC-13-VC-127-VC-14 VC-16-44-VC-126 VC-16-42 31334 CV VC-42-2 1-VC-293 VC-15-7 2-VC-16A 23037 V C-43-3 VC-43-2 2-VC-11A VC-25-1 VC-21-1-VC-20A 2-VC-17A 1-V C-136 VC-15-5 VC-7-1-VC-18A VC-17-3 VC-19-1 31337 CV VC-43-1 3-VC-23E 2-V C-22 A-VC-155 27090 23148 18254-VC-154-VC-153 VC-16-74 1-VC-22A 2-VC-21D D 1FI 1FE 116B 116 1FI 1FT 116A 116 2-VC-22B-VC-158 27091 41150 23149 18255 VC-16-73 VC-14-1 VC-14-2-VC-157 2-VC-21C-VC-308-VC-309 4105401 15174 15175-V C-145 V C-16-13 VC-8-5-VC-144 V C-16-17 2-V C-21 A V C-16-21-V C-143 VC-8-7 VC-7-18-VC-142 VC-16-23 21136 4106701 11325-V C-24-V C-162 11326 4106801-VC-137 2-V C-17 A VC-16-25-WL-7 VC-16-4 31335 CV VC-42-1-VC-130 VC-16-37 VC-17-5 VC-16-35 18289-VC-129 VC-16-41 2-VC-12 V C-43-6 V C-43-5 23039-VC-24B VC-43-4 VC-42-3-WL-7-VC-146-V C-14-VC-122-VC-14 18288-VC-125 VC-16-40 VC-16-38-VC-124 D V C-16-34 VC-16-36 VC-17-4 VC-16-32 31336 CV VC-7-2 42049 2-VC-17B-VC-133 2-VC-16B 1-V C-135 VC-15-6 VC-42-4 VC-16-5 VC-16-26-VC-18B VC-17-2 VC-19-2 31338 CV 1-V C-120 VC-15-8 VC-16-39 VC-16-43-VC-128-VC-306-VC-307 21137 4105501 15176 VC-21-2 15177 1-VC-21B VC-16-24 VC-16-89-V C-147-V C-192-VC-148-VC-151-VC-149-VC-150 2-VC-21B VC-16-20 VC-16-18 VC-7-19 VC-8-4-VC-152 D VC-16-14 VC-16-16 VC-16-22 VC-16-19 VC-8-6 REACTOR COOLANT PUMP THERMAL BARRIER.

3-VC-23E-VC-24 V-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-"-" 1TI 1TI 1PI V 1TIA 1HC V-"-"-" 1FIA 1FIA-VC-20B VC-195-14 VC-195-13 VC-195-12 VC-195-11-"-" VC-16-88-"-"-" 31333 CV V V-"-" D 135-111 11 REGEN HX V 40GPM ORLD2-" D D-"-"-" D-"-" VC-17-1 RH-7-1 RH-6-1 V-" WL-40-3 V D TYP NOTE 10 31255 CV OUTL DRN & FLSH D-4 C-4" MAKE-UP WATER LINE.

FROM PRESSURIZER RELIEF TANK, REACTOR 1-VC-22B-VC-156 VC-195-4 VC-195-1 VC-195-2-" D D-" B-P ORIF NO. 1 SEAL D-V C-193 V D 2-VC-17A V LOOP A RCP 11 LOOP B RCP 12 3" B-P ORIF NO. 1 SEAL 1FM 177& FLUSH DRAIN I N S I D E R X C N T M TOU T S I D E R X C N T M T INSIDE RX CNTMT OUTSIDE RX CNTMT CONN TEST REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$

$$$$$$SYDATE$$$$$$

REV DWN DATE CHECKED PROJECT NO.

APP'D & CERT.

DB 8-12-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO.

GROUP 8630 1 5 6 9071 M430 4320 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 83 by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's.

This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSP GENERATION CAD FLOW DIAGRAM CHEMICAL AND VOLUME CONTROL UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 XH-1-38 XH-1-38 XH-1-38.DGN 12.11.10.8.6.NOTE 8 NOTE 8 NOTE 9 B-7 XH-1-7 NOTE 9 9.CONN LEAKTEST INLET VENT & FLSH

& FLUSH DRAIN FO FC FC FC FC FC FC (I/1)(I/1)FC FC FO FC REFERENCE DWGS XH-1 RC SYS FLOW DIA UNIT 1 XH-1 RH SYS FLOW DIA UNIT 1 XH-1-123 - WL SYS FLOW DIA UNIT 1 & 2 NF-39245 CC SYS FLOW DIA UNIT 1 XH-1 VC SYS FLOW DIA UNIT 1 FC T T T (TYP 3)NOTE 11 D 41149 1-VC-22B 1-VC-22A FC HI 135-011 11 EXCS LTDN HX 1HCV-123 VC-195-3 (INSIDE CONTAINMENT) SEE NF-39250 FOR ROUTING OF VALVE STEM LEAKOFF

13. T - DENOTES CNTMT ISOLATION TRIP SIGNAL

NSR C1 IA C1 NSR IA NSR C1 IA NSR C1 IA C1 IA NSR C1 C2 IA IB NSR C1 IA NSR C1 IA NSR C1 IA NSR C1 IA IB C2 NSR IB C2 NSR C1 IA NSR IB C2 C1 IA C1 IA NSR C1 IA NSR C1 IA NSR IB C2 NSR C1 IA NSR C1 NSR IA IB C2 C1 NSR C2 IB III NSR III IA C1 C2 IA IB NSR C2 IB III NSR C2 IB III NSR C2 IB III NSR C2 IB C2 IB III III III NSR IB III C2 NSR C1 IA NSR IB III C2 H-1 XH-1-39 WTR INJ FLTR FROM THE SL B-2 XH-1-123 TO RCDT E-3 XH-1-123 OUTLET OF RCDT E-3 XH-1-123 OUTLET OF RCDT H-3 XH-1-7 LOOP B RCS FROM SUCT LN LTDN LN F-4 XH-1-7 LOOP B RCS TO COLD LEG CHG LN C-4 XH-1-7 TO PRZR RCS AUX SPRAY F-11 XH-1-7 LOOP A RCS FROM COLD LEG EXCS LTDN LN E-3 XH-1-31 RSDL HT EXCH FROM OUTLET OF

-VC-3A-VC-3A NF-39245-1 CC NF-39245-1 CC B-4 XH-1-7 TO PRT B-2 XH-1-123 TO RCDT B-1 XH-1-39 HT EXCH TO THE LTDN E-5 XH-1-123 FROM RCDT PMPS DISCH F-1 XH-1-39 FROM THE CHARGING PMPS D-1 XH-1-39 TO THE SL WTR FLTR B-4 XH-1-7 TO PRT C1 IA VC-16-10-"& FLUSH DRAIN C1 IA NSR 2-VC-12 NSR C2 IB III C2 NSR IB III B-7 XH-1-7-"-"-"-" NSR III NOTE 15 C2 IB C2 IB NSR III C2 IB NOTE 15 1-VC-21A C1 IA NOTE 15 2. PHYSICAL NF-39328

1. LINE LIST (206C928) (XH-1-456)

14. DENOTES CNTMT PENETRATION NUMBER FLANGE LAB SEAL DP XMTR TAPS.

15. 1/8" HOLE DRILLED AT THERMAL BARRIER C1 IB IA C1 IB IA 40GPM ORLD1 31226 CV 2-VC-4-VC-5 C2 C2 2-VC-6-V C-5-V C-6 DWN: MEA 2-17-15 CHK'D: MJN 2-18-15 AS BUILT-81 MOD#: EC-25282 CAP CHANGED TO VENTED CAPS ON VALVES. (VC-16-4 & VC-16-5)

PER DRR PI-15-028 APP'D: CMR 2-18-15 DWN: MEA 3-10-15 CHK'D: RWC 3-16-15 AS BUILT-82 MOD#: EC-25283 VALVES CHANGED FROM NC TO NO. (VC-16-4 & VC-16-5)

PER DRR PI-15-029 APP'D: KJW 3-16-15 2-VC-19A 2-V C-19 B"83""83" 42028 04 BYPASS LEAKOFF RETURN SEAL PRESSURE P2 PRESSURE P3 03-VC-341 VC-195-8-" NSR C2 III IB 42028 42028 C2 IB HI C2 IB III NSR VC-195-7 IB III C2 NSR 01-" 42028-VC-340 2-VC-17A 1-VC-17A VC-195-9 IB III C2 NSR 01-" BYPASS LEAKOFF RETURN SEAL PRESSURE P2 PRESSURE P3 42029 C2 IB 42029 03-VC-343 VC-195-10-" 02 NSR C2 IB III 42029 HI VC-16-33 04-VC-342"83""83""83" 02"83""83" VOLUME CONTROL TANK.

VALVE FAILS WITH THE FLOW TO 7.8141 IS DESIGNED TO PASS 80 GPM.

ORIFICE ORLD 3 UPSTREAM OF ISOLATION VALVE ARE DESIGNED TO PASS 40 GPM AND THIRD OF ISOLATION VALVES 8140A, 8140B RESPECTIVELY LETDOWN ORIFICES ORLD 1, ORLD 2 UPSTREAM THE OPENING TIME APPROXIMATELY 10 SECONDS.

ORIFICE ISOLATION VALVE OPERATOR, MAKING BETWEEN THE SOLENOID VALVE AND THE INSTALL A NEEDLE VALVE IN THE AIR LINE "83" IB 1-VC-17B C2-"-""83" CONSTRUCTION ISSUED FOR REMOVED STANDPIPPES

& EXISTING XMTRS IPT-173, IPT-174,IPT-175,IPT-176 &

DELETED NOTE 7.

DEVICES & PIPING.

REMOVED SEAL LINE 2 ASSOC DEVICES & PIPING, IPT-174,IPT-198,IPT-199 ADDED NEW XMTRS IPT-173, ASSOC DEVICES & PIPING, T.A. MAHER 3-11-14 PE# 51207 MOD#: EC-21790 83 REVIEWED: RW 3-11-14 AS BUILT-MOD#: EC-21790 DWN: MEA 4-17-15 CHK'D: RSA 6-1-15 DWN: JMB 3-11-14 CHK'D: FJH 3-11-14 RECORD TRACING.

TRANSFERRED TO CERTIFIED REV. 83 , DRR PI-15-005 REV. 83 PER INCORPORATED A/E's PE CERT: APP'D: KJW 6-1-15 APP'D: TAM 3-11-14 CONSTRUCTION ISSUED FOR 2VC-19B.

PE#

MOD#: EC-21790 REVIEWED: RWA 9-16-14 DWN: JMB 7-28-14 CHK'D: FJH 9-16-14 PE CERT: APP'D:

INCORP: PLANNER COMMENTS, REDESIGNATED PREVIOUSLY OMITTED LINES 2VC-19A &

603000001331 CAD FILE: FIGURE 10.2-7 REV. 35 U10207.DGN

-"" 1-2VC-190-2VC-190-2 V C-140 V V 2-2 V C-24 A 27093 D V D V V-2VC-124 2-2VC-24B-2VC-16A V-2 V C-116 D-2VC-117 D T T 3" 2-HCV-123 D D D D D 3" 2-8143 V D T V LO V HI HI LO LO V HI V-2 V C-105-" V 31230 CV 31279 CV 2VC-8-2 2VC-16-86 2VC-17-1 2VC-16-3 31420 CV 2TE 126 15179 2VC-8-3 2VC-16-2-2VC-106 2VC-16-6 2VC-16-7-2 V C-111-" V 15180 4153701 HI-2VC-2 2VC-16-8-2VC-2 2VC-16-9 31347 CV 31348 CV 31349 CV 2-8140A 2-8141 T T T-2VC-2 2VC-16-10-2VC-110 D D D D 2VC-16-79 11 12 HI 2TE 129 2TA 129 2-2VC-3A M 15309 32235 MV 2TE 127 2-2VC-3B 31430 CV-2 V C-3 B 2VC-7-20 2VC-16-11 2-2VC-199 2VC-16-92-2 V C-6 V-"-" 2VC-16-1 2VC-8-1-" D 2VC-16-77 31422 CV-2VC-107-2VC-108-"-" 2VC-16-81 2VC-16-85-2VC-109 2VC-16-12-2VC-112 2VC-21-75-2CV-10A 21140 121 2PI 41538 2TE 122 15181 31222 CV 3"-2 V C-10 A-" V 2VC-15-14 31424 CV 2VC-16-38-2VC-14-" 2VC-16-82 2FIA 180 18291-2VC-14 2VC-16-34-" D 2VC-16-36 2VC-17-4-2VC-14 2VC-16-32 2VC-195-13 BYPASS-2VC-133 1-2VC-14 2VC-195-17 2VC-195-18 21144 2PI 124A 2PI 124B 4153301 11726 15184 4153401 15185 2TE 125 2TE 182 2VC-8-6-2 V C-21 B 2VC-16-22 2VC-16-20-2VC-132-" 2VC-7-19 2VC-16-24 2VC-8-4-2VC-152 2VC-16-87-" 13B D-2 V C-192 2VC-16-89 2VC-14-2 2FM 178-2VC-137 2VC-16-73 2FE 116 2FI 116B 2FT 116 2FI 116A 23151 41750 2VC-43-6 23047 2VC-43-5 2FE 176 2VC-42-4 2VC-15-6 2VC-7-2 2VC-42-3 31427 CV-2 V C-122 2 V C-16-26-2 W L-7 2VC-16-5 D-"-"-"-" 2 V C-16-39-2 V C-141 2 V C-16-44 V-" 1-2VC-14 18290 2FIA 179 2VC-16-35 2VC-16-37 2 V C-17-5-2 V C-144 2 V C-16-33 V 21141 2VC-195-11 BYPASS 2FE 175 2FM 177 23045 2 V C-42-1 2-2VC-17A 31426 CV-2 V C-119 2 V C-16-25 2 V C-7-1 2VC-15-5 31425 CV 2VC-21-77-"-" V 2VC-21-76-2VC-114-" 2VC-21-79 V-2VC-113 2VC-21-78-"-2VC-118 2VC-15-10-"-" M 6" M 2VC-25-1 32194 MV V-2VC-130 D-" 2VC-16-17 2VC-8-7 2VC-8-5-2VC-129 V 2VC-16-13-" 1-2VC-21A

-2 V C-21 A 13A D-" 2 V C-16-21 2VC-7-18 2VC-16-23-2VC-131-2 V C-193-" D 2 V C-16-88 D-2VC-134 2VC-16-74 2FE 115 2FI 115B 18256 2FT 115 2FI 115A 23150 41749-" 27092 2VC-14-1-" 2VC-16-78 LO 21143 2PI 131A 4153101 11725 2VC-195-16 2VC-195-15

-2 W L-7-" 2 V C-16-4 2TE 132 15182 4153201 2TE 181 15183 D 32210 MV MOD#:

DWN: JMM 9-14-98 CHK'D: PAS 9-17-98 AS BUILT-CHANGED VALVE NUMBER FROM 2VC-16-23 TO 2VC-16-22.

PER DRR PI-98-89 FILMED 9-98 S MOD#:

DWN: BMS 3-31-00 CHK'D: CMR 5/3/00 AS BUILT-ADD FLANGE IN NO. 2 SEAL LEAKOFF PIPING OF 21 AND 22 RCP TO 2VC-8-4 AND 2VC-8-5.

PER DRR PI-00-27 FILMED 5/00 T DWN: VLS 05/24/05 CHK'D: CMR 05/24/05 AS BUILT-PER DRR PI-05-092 FILMED 06/05 U MOD#: 01VC01 REMOVE FLANGES ON VALVES 2VC-8-4 AND 2VC-8-5

V 18257 2VC-26-1 31421 CV 2VC-43-2 2VC-43-3 2VC-42-2-"-"-"-" CONTROL TANK.

7. VALVE FAILS WITH FLOW TO VOLUME BARRIER.

9. REACTOR COOLANT PUMP THERMAL NOTE 11 NOTE 11 NOTE 11 2VC-195-3 2VC-195-4 2VC-195-1 2VC-195-2 2VC-16-84-" 2 V C-195-10 2RH-7-1 2RH-6-1 2WL-40-3 2-2VC-22B 14A B-4 XH-1001-3 WATER LINE.

10. FROM PRESSURIZER RELIEF TANK MAKEUP

-"-"-" NOTE 9 NOTE 9 D-4 NF-39246-1 T CNTM X R E INSID 8141 IS DESIGNED TO PASS 80 GPM.

ORLD3 UPSTREAM OF ISOLATION VALVE PASS 40 GPM AND THE THIRD ORIFICE 8140B RESPECTIVELY ARE DESIGNED TO UPSTREAM OF ISOLATION VALVES 8140A, 11. LETDOWN ORIFICES ORLD1, ORLD2 APPROXIMATELY 10 SECONDS.

OPERATOR MAKING THE OPENING TIME AND THE ORIFICE ISOLATION VALVE LINE BETWEEN THE SOLENOID VALVE

12. INSTALL A NEEDLE VALVE IN THE AIR (INSIDE CONTAINMENT) SEE DWG NF-39250.

13. FOR ROUTING OF VALVE STEM LEAKOFFS NOTE 12 NOTE 12 NOTE 12 FC FC FO FO FC FC FC FC FC FC 6 2-2VC-CONN VENT & TEST 3-2VC-1 B 1-2 V C-10 6 2-814 2 2-810 4350003 9 1-2VC-6 2-811 A 2-2 V C-16 A 2-2VC-22 A 1-2VC-22 A 2-2VC-22 A 2-2VC-21 REFERENCE DWGS XH-1-123 - WL SYS FLOW DIA UNIT 1 & 2 XH-1001 RC SYS FLOW DIA UNIT 2 XH-1001 VC SYS FLOW DIA UNIT 2 XH-1001 RH SYS FLOW DIA UNIT 2 NF-39246 CC SYS FLOW DIA UNIT 2

6. T - DENOTES CNTMT ISOLATION TRIP SIGNAL

14. - DENOTES CNTMT PENETRATION SYMBOL FC NOTE 7 NSR C2 III IB NSR C2 III IB NSR C1 IB IA C2 C1 NSR C1 IA C1 IB III NSR C1 NSR C2 III IB C1 IA IB C1 NSR IA III NSR C1 III IA NSR C1 III IA C1 C2 IA IB C1 C2 IA IB NSR C2 III IB NSR C2 III IB NSR C2 III IB C2 IB III NSR C2 IB III NSR NSR C2 III IB E-9 XH-1-123 IA III III IA NSR C1 III IA-2VC-142-" D C2 IB IA C1 III NSR IA III C2 IB III-"-"-"-"-"-" NSR C1 IA III IB IA C2 C1 NSR C1 III IA NSR C1 III IA NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS.

I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED.

DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.)

STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES.

IB NSR III DWN: DB 1-26-10 CHK'D: JEK 1-27-10 AS BUILT-76 MOD#: EC-14781 UPDATE WITH STANDARD BORDER FOR CONSISTENCY WITH DRAWING CONTINUATION COORDINATES.

PER DRR PI-09-209 APP'D: CMR 2-12-10 235-011 (I/1)EXCS LTDN HX 21 235-111 (I/1)REGEN HX 21-2VC-195-2VC-194-2VC-197-2VC-196 IB III C2 NSR H-3 XH-1001-3 LOOP B RCS)(FROM SUCT LN LTDN LN CONN TEST F-4 XH-1001-3 LOOP B RCS)(TO COLD LEG CHG LN C-5 XH-1001-3 (TO PRZR RCS)

AUX SPRAY D-11 XH-1001-3 LOOP A RCS)(FROM COLD LEG EXCS LTDN LN F-3 XH-1001-8 RSDL HX (RHR)

FROM OUTL OF E-7 XH-1-123 PMPS DISCH FROM RCDT B-1 XH-1001-5 TO THE LTDN HX F-1 XH-1001-5 CHG PMPS FROM THE B-9 XH-1-123 RCDT B-4 XH-1001-3 PRT D-1 XH-1001-5 WTR FLTR TO THE SL H-1 XH-1001-5 SL WTR INJ FLTRS FROM THE B-P ORIF NO. 1 SL B-P ORIF NO. 1 SL NSR 15 NOTE A 2-8148 A 2-2 V C-17 C2 IB C2 IB 15 NOTE C2 IB III NSR FLANGE FOR LAB SEAL DP XMTR TAPS.

15. " HOLE DRILLED AT THERMAL BARRIER 177 2FT 2-2VC-21C 2-2VC-21D 127 2TI 2TI 125 132 2TI 2PI 131B REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT PER DRR PI-10-125 MOD#: EC-14788 DWN: JEK 8-18-10 CHK'D: DB 9-13-10 APP'D: CMR 9-14-10 REVIEWED: WJI 9-13-10 77 SAFETY CLASS DESIGNATIONS.

2 2-814 1 2-2VC-2 2-2 V C-A 2-2 V C-3 A-2VC-3 7 2-814 7 1-2VC-4 2-814 A 1-2VC-10 4-2 V C-1 4-2VC-1 4-2VC-1 B 2-2VC-21 B 1-2VC-22 178 2FT 8-2VC-13 9-2VC-13 B 2-2VC-22 B 2-2VC-17 B 2-2VC-16 B 2-2 V C-16 2 2-2VC-1 B 2-8148 B 2-2 V C-17 E 3-2VC-23 4-2 V C-1 4-2 V C-2 4-2VC-2 A 3-2VC-11 A 2-2 V C-16 5 2-814 A 2-2 V C-11 B 3-2VC-11 A 2-8100 T CNTM X R E OUTSID 6-2VC-13 5-2VC-13 T CNTM X R E OUTSID B 2-8100 40 GPM ORLD 1 40 GPM ORLD 2 80 GPM ORLD 3 LOOP A RCP 21 LOOP B RCP 22 2 2-2VC-2 2-2VC-T M CNT X R E D INSRI 2-8140B C1 IA IB 2-2VC-6-2VC-5-2VC-5 2-2VC-4 2-2VC-5-2VC-6 C2 C2 DWN: DB 11-3-11 CHK'D: RSA 11-7-11 AS BUILT-78 MOD#: EC-18873 REMOVED "LO" REF AT VALVE 2RH-7-1 LOC A-7.

PER DRR PI-11-204 APP'D: CMR 11-14-11 1-2VC-21B DWN: KJF 8-16-12 CHK'D: WEH 8-20-12 AS BUILT-79 MOD#: EC-19005 ADDED FLANGE TO LINE NO 1-2VC-21B LOC F-3.

PER DRR PI-12-162 APP'D: CMR 8-21-12 174 2PT 173 2PT LO LO HI 3/4-2VC-343 199 2PT C2 IB-" 8. 21142 3/4-2VC-341 198 2PT C2 IB-" 2VC-195-12 2VC-195-14 LEAKOFF LEAKOFF C-9 XH-1001-3 NOTE 10 31428 CV 2-8149A 2VC-19-1-2VC-18A 2VC-17-3-2VC-20A 2 V C-21-1 B-8 XH-1-123 C-8 XH-1001-3 NOTE 10 FC 2VC-19-2 31429 CV 2-8149B B-2VC-18 2VC-17-2 B-2VC-20 2VC-21-2 2-2 W L-1 B-8 XH-1-123 RCDT 1-2VC-17B

-2VC-342-2VC-340 1-2VC-17A 42528 02 03 42528 01 42528 04 42528 04 42529 01 42529 42529 02 03 42529 NSR III NSR III NSR III C2 NSR E-9 XH-1-123 C2 IB C2 IB C2 RETURN SEAL PRESSURE P2 PRESSURE P3 C2 RETURN SEAL PRESSURE P2 PRESSURE P3 IA C1 C2 C2 IA C1 IB IB IB IB III NSR DWN: JEK 9-12-13 CHK'D: BWK 9-17-13 AS BUILT-80 MOD#: EC-21096 REPLACED NEEDLE VALVE 2VC-14-1 WITH GLOBE VLV INSTALLED WITH FLOW OVER SEAT.

PER DRR PI-13-142 APP'D: CMR 9-17-13 DWN: DB 12-10-13 CHK'D: RLM 12-11-13 AS BUILT-81 MOD#: EC-22940 CORRECTED VLV NUMBER MV-31424 TO CV-31424

@ LOC C-8.

PER DRR PI-13-233 APP'D: CMR 12-11-13 "84""84" DWN: LAB 3-20-14 CHK'D: JKR 3-24-14 AS BUILT-82 MOD#: EC-21789 REMOVED STANDPIPES &

EXIST. XMTRS 2PT-173, 2PT-174, 2FT-175, 2FT-176 &

PIPING. DELETED NOTE 8.

SEAL LINE 2 DEVICES &

DEVICES & PIPING. REMOVED 2PT-199 & ASSOCIATED 2PT-173, 2PT-174, 2PT-198 &

PIPING. ADDED NEW XMTRS ASSOCIATED DEVICES &

PER DRR PI-14-051 APP'D: CMR 3-25-14 VENTED J-TUBE VENTED J-TUBE DWN: MEA 3-16-15 CHK'D: BWK 3-17-15 AS BUILT-83 MOD#: EC-25364 VALVES 2VC-16-4 & -5 NORMALLY CLOSED CHANGED TO NORMALLY OPEN.

TO VENTED J-TUBE.

CAPPED VENT CHANGED PER DRR PI-15-037 APP'D: KJW 3-17-15

-"-"-"-"-"-"-""84""84""84""84" NSR C1 IA III NSR C1 III IA NSR C1 IA III DWN: JEK 10-2-17 CHK'D: RSA 10-18-17 AS BUILT-84 MOD#: 6MODWMO22220 ADDED " PIPE x -" TUBE ADAPTER & -" CAP TO FLANGE ON ROOT VALVES FOR CLASS ONE VALVES.

AND SAFETY CLASS FLAGS 2VC-16-23,24,25,26,32&33 PER DRR PI-17-140 APP'D: DB 10-18-17 NSR C1 III IA 126 2TI 41949 122 2TI 41539 121 2PT 124 2PT 131 2PT 123 2HC REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$

$$$$$$SYDATE$$$$$$

REV DWN DATE CHECKED PROJECT NO.

APP'D & CERT.

JEK 8-18-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO.

GROUP 8630 2 750 200 5 6 9071 M430 4320 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 84 1001-4 XH-1001-4 XH-NSP GENERATION CAD XH-1001-4.DGN FLOW DIAGRAM CHEMICAL AND VOLUME CONTROL UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's.

01516979 CAD FILE: U10209.DGN FIGURE 10.2-9 REV. 34 LEGEND C2 C2 - SAFETY-RELATED; ISI CLASS 2 NSR - NON-SAFETY-RELATED CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES.

IB NSR 2RM-26-8 2RM-27-2 3" DRAIN#21" 2RM-10-56 6-2RM-2" 11098 11099 RM-24-3" RM-5-3 38" TUBING BY PASS ES 46592 2RM-12-1 DE-34-64 2DE-33-7 2DE-34-78 DE-34-48 2DE-34-14 1"" 2DE-16-2 2DE-54-1" 2DE-16-4" 2DE-54-2" 1-2DE-11 1"" 2DE-16-6" 2DE-16-7 2DE-54-4 2DE-54-3"" 2DE-16-9" 2DE-16-8 2DE-54-5 2DE-54-6"" TELLTAIL (TYP.)1-DE-61 1"" DE-16-4"" 1" 1-DE-61""" DE-16-6 1"" DE-54-4" DE-16-7 DE-54-3 DE-54-6 TELLTALE DE-16-9 (TYP.)DE-54-5"" DENOTES HOSE CONN. WITH VALVE & COUP.

DENOTES THE EQUIP. Q.A. TYPE/DESIGN CLASS.

DENOTES FURNISHED WITH EQUIPMENT DENOTES PIPING PENETRARION NUMBER.

DENOTES CATEGORY-VENTILATION ZONE.

DE-34-74-DE-40 DE-34-39 DE-77-2-DE-39 DE-34-40"""""-DE-49 DE-34-68 DE-34-67 DE-34-66-DE-49-DE-62DE-61-3 DE-61-2 DE-34-80 DE-34-65" PIPE DE-34-75 2DE-34-23 DE-34-6 DE-34-38 TO HOT MACHINE SHOP AREA-DE-50 DE-33-5 3-DE-44 1-DE-44 DE-34-44 DE-34-45""""-DE-44 DE-34-13 DE-34-14 DE-34-49-DE-43 2-DE-43 DE-35-1 DE-34-37-DE-49-DE-49 1-DE-49 DE-34-18 DE-34-50" 1"""-DE-49-DE-48 2-DE-49 1-DE-49"""-DE-47"-" DE-34-51 DE-34-9 2-DE-47 2-DE-48 VENT 2" 2"""DE-34-79"-DE-48DE-34-63 TO SAMPLE SINKS

" DE-34-4 2DE-34-30 2DE-86-1 2-2DE-5 2" OUTSIDE SHIELD BLDG.

INSIDE SHIELD BLDG.

OUTSIDE CONT.

2DE-34-59" 1-2DE-2-2DE-3 4-2DE-2 2DE-34-60-2DE-2"""""-2DE-32DE-34-22" 1-2DE-3 2-2DE-3 2DE-29-4 2DE-29-3 2DE-34-9 2DE-34-79-2DE-2 1-2DE-2 2DE-88-1 2DE-58-1 FUNNEL INSIDE B.A. EVAP.

ENCLOSURE D E-58-2 D E-62-1 DE-34-52-DE-6 2-DE-47 1-DE-47 2-DE-46 DE-28-1 DE-29-1 2-DE-51 DE-34-22 DE-29-3 DE-34-26 DE-29-4" RM-10-49 RM-7-6 2-RM-9 DE-34-3" 1-DE-46-RM-18 RM-10-57-DE-46-RM-19DE-34-55 DE-34-56 DE-34-12 1-DE-46-DE-51 DE-34-23 DE-34-24 DE-34-25 DE-34-54" DE-35-3 DE-42-2 DE=42-1 DE-24-2 1-DE-52 DE-24-1 DE-24-3 RM-4-2 2-RM-8 RM-10-58 2CP-20-16"" 2DE-34-35 2DE-34-36-2RM-7 2DE-34-34""-2DE-52-2DE-5-2DE-52DE-34-28 2DE-34-33-2DE-5 2-RM-8 RM-8-6 RM-25-4 RM-12-2 RM-10-45 RM-8-5 2-RM-6-RM-7" -RM-17RM-10-50 RM-10-47 RM-8-4 2-RM-6--RM-16 RM-213-2 2RM-27-1 2RM-27-3 2RM-26-1 2RM-8-6 RM-26-3 2RM-26-3 2RM-26-5 2RM-18-1 2RM-17-1 2RM-26-7 2RM-14-3 2RM-24-3-2RM-14-2RM-14-2RM-15-2RM-7 2RC-9-4 3-2RM-3 4-2RM-3 4-2RM-5#12#11 3-RM-24RM-20RM-20 3-2RM-10 2RM-26-4 RM-21-2 3-2RM-4 RM-23-2 2RM-26-6 RM-8-2" DRAIN (TYP.)

VENT (TYP.)-RM-20-RM-202RM-8-9 2RM-10-43 RM-22-1 RM-29-5 RM-30-1 RM-29-3 31005 RM-29-6 RM-31-1 RM-26-4 RM-10-43 2DE-34-54 2DE-34-23 2DE-34-24 2DE-34-25 VENT-" TUBING BY-PASS 1" 2RM-25-1 RM-28-2 RM-3-1 DE-60-1 RM-10-55RM-15 RM-25-2 RM-24-2 RM-3-2 3-RM-1 RM-10-54 RM-25-1 RM-24-1 RM-11-1 RM-14-2"" 4-RM-1 4-RM-2 RM-11-2 RM-17-1" RM-1-3 RM-10-56 RM-18-1 RM-1-1-RM-14" RM-1-2 RM-18-2 RM-17-2-RM-13 3-RM-2 4 R M-5 1" 1" 2RM-10-44 DEMIN WTR TO U1 SVCS LOCKER ROOM

" HOSE CONN. AT EL. 718'-6" MAINT. STORAGE AREA HOSE CONN.

715 MEN RELIEF VALVE TEST STAND IN MAINT. SHOP DE-34-62 DE-34-61 DE-33-1 RM-29-4 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$

$$$$$$SYDATE$$$$$$

REV DWN DATE CHECKED PROJECT NO.

APP'D & CERT.

NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO.

GROUP 8630 100 400 5 6 4410 4940 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 85 39242 NF-39242 N F-by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's.

This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSP GENERATION CAD NF-39242.DGN FLOW DIAGRAM UNITS 1 & 2 REACTOR MADE UP & DEMINERALIZED WATER SYSTEMS A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12" E-12 TO NF-39255-1 DWN: JEK 7-7-10 CHK'D: DB 8-4-10 AS BUILT-78 MOD#: EC-14782 ADD DWG CONTINUATION

& GRID LOCATIONS TO NF-39255-1. DEL INFO THAT IS ON NF-39255-1. 04NS15 PER DRR PI-10-110 APP'D: CMR 8-5-10 WITH TEST CONNECTIONS PROVIDE THIS BLIND FLG DURING NORMAL OPERATION OFF WITH BLIND FLANGES TO BE REMOVED & BLANKED FLEXIBLE CONNECTION C2 NSR NSR C2 INSIDE CONTAINMENT COL ROWS 13 AND J

" HOSE CONN AT EL. 718'-6" NEAR 4-2DE-2 2DE-28-1 2DE-29-1 2-2DE-2 2-2 D E-2 2-2DE-2 2DE-35-2 IIB IB IIB IB 49B IIB IB IIB IB C2 NSR DE-35-2 NSR C2 UNITS 1 AND 2 REACTOR MAKE-UP WTR.

SYSTEM: DEMIN. WTR. AND REFERENCE PIPING DWG. NO'S NF-39340-5 NF-39340-4 NF-39340-3 NF-39340-2 NF-39340-1 NF-39240-1 SYSTEM: CHEM. FEED SYS.

REMOVED DURING NORMAL OPERATION SO

1. THE INTERNALS OF THESE CHK. VLV'S. ARE NOTES: THAT THE DEMIN. WATER HEADER MAY BE PRESSURIZED WITH REACTOR MARK UP WATER.

2. TO GRAB SAMPLE SINK & WATER QUALITY MONITORS SEE DRAWING NF-157545.

MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS

3. 4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DWN: JEK 9-20-10 CHK'D: DB 9-20-10 AS BUILT-79 MOD#: EC-15902 ADDED SAFETY CLASS FLAGS AT PENET 49B & 55, SAFETY CLASS LEGEND &

NOTES 3 & 4. 04NS15 PER DRR PI-10-145 APP'D: CMR 9-21-10 IIB DELETED MISC NOTES.

DE-16-2 DE-54-1-DE-61 DE-16-3 TUBING-" SS DE-57-3 DE-57-2" DE-54-2-DE-61 DE-16-5 TUBING" SS DE-54-7 DE-54-8 CONN.HOSE FUME HOOD U1 CHEM FEED DEMIN WTR TO

-2DE-11 DWN: LAB 9-1-11 CHK'D: SMF 9-21-11 AS BUILT-80 MOD#: EC-16124 ADDED VALVES DE-54-7 &

-8 AND DE-57-2 & -3 DOWN STREAM FROM DE-54-1 AND DE-54-2.

PER DRR PI-11-159 APP'D: CMR 9-21-11 2-2RM-8 NEAR NEW FUEL PIT AREA.

" HOSE CONN. @ EL. 758'-6" SURGE TANK.

NEAR #21 COMPONENT CL'G

" HOSE CONN. AT EL. 758'-6" WATER HEATER LAUNDRY AREA TO #121 X-HIAW-1001-128 NO'S 33 & 34. SEE BORIC ACID EVAP. CONN'S.

0610 47022 A 0601 47022 A-DE-61-2DE-2B-2 SEE NF-39240-1 TO CHEM FEED TNK #121 B-1 SEE NF-39240-1 TO CHEM FEED TNK #14 B-4 SEE NF-39240-1 TO CHEM FEED TNK #13 B-5 SEE NF-39240-1 TO CHEM FEED TNK #11 B-11 SEE NF-39240-1 TO CHEM FEED TNK #25 B-10 SEE NF-39240-1 TO CHEM FEED TNK #24 B-8 SEE NF-39240-1 TO CHEM FEED TNK #23 B-6 SEE NF-39240-1 TO CHEM FEED TNK #21

-2DE-11-2DE-11-2DE-11-2DE-11-2DE-11-2DE-11-DE-61-DE-61-DE-61-DE-61-DE-61-2DE-11-2DE-11-DE-45""" E-9 SEE NF-39241-8 WATER SERVICE DEMINERALIZED UNIT 2 C-11 C-8 E-5 D-10 C-8 A-8 NF-39246-1 F-4 NF-39245-2 B-11 C-8 B-10 NF-39241-8 F-10 D-4 G-1-2RM-6 2-2RM-6 2-2RM-6 G-4 E-9 E-3 G-7 NF-39253-1 D-3 NF-39253-1 F-3 F-4 H-8 D-11 SEE XH-1-41 H-4 D-10 H-5 D-3 F-10 C-3 XH-1-405 E-10 B-5 G-2 B-11 NF-39245-1 F-4 G-8 F-4 NF-39603-4 B-10 SEE DWG NF-39241-8 D-9 C-10 A-11 TO NF-39255-1 C-4 G-7 G-1 NF-39241-8 C-10 XH-1-124 D-3, G-3 NF-39245-2 C-8, F-11 E-1 C-9 B-9 C-6 E-6 DWN: DB 10-22-13 CHK'D: CMR 10-23-13 AS BUILT-81 MOD#: EC-22107 DEL DOTTED CHEM FEED TNK REF& ADDED DWG CONT REV'D MISC DWG NOS. ADDED GRID REF TO DWG CONT .

PER DRR PI-13-181 APP'D: CMR 10-23-13 B-5 XH-550-6-1 A-6 XH-550-6-2 A-6 CONT. ON X-HIAW-1001-3 2-DE-45 SEE DWG. NF-39680-DE-47" 1-DE-47" 16960 70154 16557 11997 70156 RM-30-2 70151 2RM-26-2 RM-29-1 RM-21-1 RM-23-1 11998 2DE-60-1 41530 02 24013 46593 31515 2RM-8-4 2RM-5-2 CP-20-16" DE-86-1 DE-28-2 2-DE-46 DE-34-1 SV-33189" DE-33-7 2DE-16-3 2DE-16-5 DE-34-47" DE-34-46""" 2DE-34-12""" 2" 2-2RM-8" -RM-15-RM-15-R M-14 -RM-20 41530 2DE-33-6

-" DE-34-71RM-22 2-DE-46 2-DE-46 2-RM-8 46025 1" RM-13-1 RM-20-1 RM-13-4 PS RM-31-2 MOIS SPRTR PI 11986 RM-13-5 MOIS SPRTR 1" 2" 2" RM-13-2 RM-13-3 RM-13-6 1-RM-23-RM-23 3" TO ATMOS PI 11985 BY F.P.I.1" RM-28-1 VAC PMPS RMW DGASFR ES 70153 TYP 2 FLR DRN AS BUILT-82 PER DRR PI-13-204 ADDED VLVS RM-13-1 THRU 6, RM-28-1, 2, PI-11985, 11986 &

DWN: DB 11-5-13 CHK'D: RLM 11-8-13 AS BUILT-APP'D: CMR 11-12-13 MOD#: EC-22239 CHK'D: RLM 11-8-13 DWN: DB 11-5-13 CORRECTED LOC OF VLV DE-34-2. ADDED VLV#

DE-34-71 TO HOSE CONN.

MOIS SPRTR @ LOC A-4 PER EC-23068

@ LOC H-1.

RM-10-53 DWN: MEA 4-9-15 CHK'D: RLM 4-9-15 AS BUILT-83 MOD#: EC-24635 CHANGED VALVE NO.

FROM RM-10-55 TO RM-10-53.

PER DRR PI-15-047 APP'D: KJW 4-9-15 045-1001 045-1002 DWN: MEA 1-25-16 CHK'D: RSA 1-25-16 AS BUILT-84 MOD#: EC-22493 RECONFIGURE PIPING FOR DEGASIFER PUMPS.

INCORP. EC-26143

PER DRR PI-16-018 APP'D: KJW 1-25-16 2-RM-20"85" DWN: DB 3-21-16 CHK'D: BH 3-22-16 AS BUILT-85 MOD#: EC-25768 CORRECTED CNTL SWITCH ID FROM CS-46023 TO 46025 @ LOC D-1.

PER DRR PI-16-075 APP'D: KJW 3-22-16 MV 32375

603000001331 CAD FILE: FIGURE 10.2-11 REV. 35 U10211.DGN 1-8702B RH-11-9 RH-11-11 RH-7-6 V RH-11-16 RH-11-13 RH-10-1 RH-2-5 RH-12-1 RH-11-14 RH-2-6 RH-11-10 RH-11-12 RH-10-2 V RH-7-20 RH-7-10 R H-5-1 RH-11-2 RH-11-15 RH-7-12 RH-7-14 RH-11-6 RH-1-4 1-8714A RH-2-4 RH-11-8 RH-2-3 RH-11-7 V RH-1-3 RH-7-5 RH-11-5 RH-7-13 RH-7-11 RH-7-21 V RH-11-4 RH-2-2 1-8713A RH-4-2 D RH-7-4 RH-1-2 RH-3-2 621 1PT RH-7-3 RH-7-7 RH-11-1 RH-1-1 RH-3-1 RH-5-2 1-8705 RH-8-1 1-8701A D 31235 V RH-3-3 RH-2-1 RH-11-3 RH-4-1 RH-7-17 1-8715A RH-135-6 RH-195-1 RH-135-8 RH-135-3 RH-195-2 RH-135-7 RH-135-5 1-8713B 1-8712B 1-8715B 1-8714B 1-8716B 1-8717B 1-8717A 1-8710A 1-8711A 1-8716A 1-8711B 1-8710B 6-RH-10A 1-8712A D CV 32164 MV MV 32165 32230 MV 32231 MV CV 31237 CV MV 32066 RH-6-1 RH-7-1 10-RH-11 6"-RH-16"TUBING" TUBING CC-33-11 HI LO 32077 MV HI LO MV 32078 NF-39245-1 CL-99D-2 CL-99D-1-RH-12" TUBING MV 32065 32234 MV 9 10 48" TUBING" TUBING 11666 M M M M M 1-8702A M M RH-7-16 WL-64-8 WL-64-10 1HCV-625 1HCV-624 RH-133-4 RH-133-3 RH-133-6 RH-133-5 RH-133-2 RH-133-1 -R H-60-R H-61-R H-59 RH-3-4 WL-64-14 D 1-8701B RH-7-8" TUBING" TUBING" TUBING RH-7-15 M CONTAINMENT ANNULUS AUX BLDG M 11665 RH-135-4 V 2-RH-51-RH-19 32206 MV RH-7-9 6-RH-10B V-RH-19 RH-7-2 M (TYP) FLOOR THROUGH EXTENSION STEM NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 XH-1 RC SYSTEM FLOW DIA. UNIT 1 XH-1 SI SYSTEM FLOW DIA. UNIT 1 NF-39237 - CS SYSTEM FLOW DIA. UNIT 1 & 2 NF-39245 CC STSTEM FLOW DIA. UNIT 1 NF-39238 - SM SYSTEM FLOW DIA. UNIT 1 & 2 XH-1 SI SYSTEM FLOW DIA. UNIT 1 NF-39248 - WL SYSTEM FLOW DIA. UNIT 1 & 2 NF-39216 CL SYSTEM FLOW DIA. UNIT 1 XH-1 VC SYSTEM FLOW DIA. UNIT 1 G-11 F-7 C-11 B-2 A-2 A-11 B-11 B-5 XH-1-38 XH-1-44 F-3 C-4 XH-1-7 XH-1-7 E-8 XH-1-45 FO 31236 FO E-6 XH-1-45 NF-39245-1 NF-39245-1 FC 1FCV-626 G-2 NF-39248 G-5 NF-39248 REFERENCE DWGS 6-R H-10 A 6-R H-10 B 135-052 (I/1)EXCHANGER RESIDUAL HEAT 12 145-112 (I/1)REMOVAL PUMP RESIDUAL HEAT 12 135-051 (I/1)EXCHANGER RESIDUAL HEAT 11 145-111 (I/1)REMOVAL PUMP RESIDUAL HEAT 11-RH-36-RH-38-RH-40-RH-39-RH-35-RH-37-RH-42-RH-44-RH-41-RH-33-RH-47-RH-46-RH-48-RH-45-RH-43-RH-34 WL-64-11 (TYP. 2)INTERNALS REMOVED STRAINER WITH C-2 NF-39245-1 630/2 1TR NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS.

I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED.

DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.)

STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES.C2 NSR C2 NSR C2 NSR C2 NSR C2 NSR NSR C2 NSR C2 NSR C3 C2 NSR NSR C1 C2 NSR C3 C2 C2 NSR C2 NSR C2 NSR C3 C2 C3 C2 C3 C2 653B 1PI 11108 PI 17098 PT C2 NSR NSR C1 C2 C1 NSR C2 C2 C1 NSR C2 NSR C2 C2 NSR IB III NSR C2 NSR " -" -" -" -" -" -" -" -" -" -" -" INJECTION LOW HEAD VESSEL REACTOR INJECTION LOW HEAD VESSEL REACTOR (CVCS)LINE LETDOWN LINE INJECTION ACCUMULATOR LOOP B (RCS)HOT LEG LOOP A (RCS)HOT LEG LOOP B SUMP B CNTMT RWST SUMP B CNTMT RWST WATER COOLING COMPONENT WATER COOLING COMPONENT NOTE 8 SEE NOTE 8 SEE SUMP #11 TO RHR PIT SUMP #12 TO RHR PIT TEST LINE CLG WTR TEST LINE CLG WTR 8. SHELL SIDE C3 TROUGH IN RESIDUAL HEAT PIT.

6. STEM LEAKOFF ROUTED TO COLLECTION IN REACTOR BUILDING SEE NF-39250.

9. FOR ROUTING OF VALVE STEM LEAK OFFS III IA IA IB IA III IB III IA IB IB III IB III IB III III III IB IB III III IB IB IB IB IB IB IC IC IC IC III IB IB III III IB III IB IB III IB III IC III III III IB IB III III IB IB TO SI PMP #12 TO SI PMP #11 NUMBER

7. DENOTES CONTAINMENT PENETRATION CC-33-10 B-10 NF-39245-1 B-2}SHELL DRN#11 RHR HX SHELL DRN#12 RHR HX

10. VALVE STEM LEAK OFF LINES ARE NSR.

SI-195-7 SI-195-8 1TI-622/623 IS AT ITS THERMOWELL.

11. C2/NSR BOUNDARY FOR 1TE-627/630 &

""-RH-69-RH-70 V R H-14-7 RH-14-8 RH-14-2 V-" NOTES CONT'D: VOID VENT VALVES HOLE IN MAIN LINE FOR

13. (*) DENOTES " DIA. EDM 1-RH-73 A-3 NF-39238 SM-7-4 630/1 1TR 32207 MV M (*)1-RH-78 RH-14-6 1-RH-76 (*)RH-15-2 V TO CS PMP #12 G-6 NF-39237 M MV 32097 1-RH-77 (*)RH-14-5 V M 32096 MV NF-39237 G-3 TO CS PMP #11 RH-15-1 V (*)1-RH-75 (TYP 2)2" FLUSH CONN RH-14-12 12. THE INTERNAL PARTS ARE REMOVED FROM CHECK VALVE RH-6-1.

NSR C2 III IB RH-13-1 V-" RH-14-1-R H-71 1-RH-71 1-RC-105 XH-1-7 B-4 NOTE 12 RH-195-4 RH-195-3 DWN: JEK 1-31-14 CHK'D: RLM 2-4-14 AS BUILT-81 MOD#: EC-23289 CORRECTED LN NO. FROM -RH-11 TO -RH-72 & VLV NOS. FROM RH-195-4 TO RH-195-3 & RH-195-3 TO 4. PER DRR PI-14-026 APP'D: CMR 2-4-14 DWN: LAB 3-14-14 CHK'D: CMR 3-17-14 AS BUILT-82 MOD#: EC-23525 REVISED TO SHOW CAPPED LEAKOFF LINE ON MV-32164 PREVIOUSLY DONE UNDER EC-12345 MODIFICATION. PER DRR PI-14-047 APP'D: CMR 3-17-14 RH-14-13-" V DWN: LAB 11-12-14 CHK'D: RSA 11-12-14 AS BUILT-83 MOD#: EC-24377 ADDED VENT VALVE RH-14-13 AND ASSOCIATED PIPING.

PER DRR PI-14-161 APP'D: CMR 11-13-14 SI-37-2 SI-32-4 SI-37-1 SI-32-3 DWN: DB 1-26-15 CHK'D: DC 1-28-15 AS BUILT-84 MOD#: EC-23491 ADDED LEAK OFF VLV REF SI-32-3,4 & SI-37-1,2 @ LOC E-5, H-5.

PER DRR PI-14-176 APP'D: CMR 1-28-15 -RH-25 NSR C2 IB III V-" RH-12-4 RH-9-4--RH-4-RH-4 III RH-12-2--RH-2 V-" C2 NSR IB RH-9-2-RH-2 V-" RH-12-3 RH-9-3--RH-3-RH-3 III RH-12-7--RH-1 V-" C2 NSR IB RH-9-1-RH-1 V-" NSR C2 IB III RH-12-5--RH-6 V-" -RH-5 R H-12-6 RH-12-8--RH-5"85""85""85" CONSTRUCTION ISSUED FOR ADDED VENT VALVES RH-9-1 THRU RH-9-4 AND RH-12-2 THRU RH-12-8 MARK S. FOSTER 04-21-16 PE# 52796 MOD#: EC-26588 85 REVIEWED: WFW 04-01-16 AS BUILT-MOD#: EC-26588 DWN: DPB 12-7-16 CHK'D: RSA 01-16-17 DWN: WTT 04-01-16 CHK'D: JDT 04-01-16 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 85 , DRR PI-16-226 REV. 85 PER INCORPORATED A/E's PE CERT: APP'D: DB 01-17-17 APP'D: BJL 04-21-16 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MAW 8-2-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 1 5 6 9070 J104 4822 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 85 1-31 XH-1-31 XH-NSP GENERATION CAD XH-1-31.DGN FLOW DIAGRAM RESIDUAL HEAT REMOVAL SYSTEM UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 2-RH-28 1-R H-28 8-RH-9B 8-R H-8 8-RH-9A 6-RH-8 6-RH-810-R H-11 8-RH-9A 12-RH-5A 2-RH-1712-R H-6 A 2-R H-7 A 1-RH-28 10-RH-11 2-R H-17 8-RH-9B 8-R H-7 B 8-R H-7 A 6-R H-12 2-RH-12 6-R H-8 1-RH-5A 8-RH-8 SAMPLE LOCAL-RH-27-RH-29-RH-15-RH-14-RH-13-RH-28-RH-49-RH-50 XH-1-44-RH-26-R H-30" TUBING" TUBING"TUBING " TUBING-RH-55-RH-56-RH-66-RH-65 XH-1-44" TUBING 1-RH-29 10" 6" 8-RH-7B 2-RH-28 XH-1-44 G-4 G-11 G-11 10"" TUBING 8-R H-9 A" TUBING 8-RH-9B" TUBING-RH-29-RH-28-" 1-RH-81-RH-11-"-"-"-"-RH-72-RH-21 2-RH-18 8-RH-1B 2-R H-18 8-R H-4 A 10-RH-3 8-RH-4B 12-RH-5B 2-R H-3 8-RH-1A12-R H-6 B 1-RH-5B CASING CASING DRAIN10-R H-3 -RH-23-RH-24-RH-3-RH-5A-R H-5 B-R H-5 B XH-1-44 XH-1-45-R H-5 A XH-1-7 8-RH-5A 8-RH-5B-RH-64-RH-63-RH-62-RH-68-RH-57-RH-58 10" 6" DRAIN G-5 F-7 F-8" TUBING 1-RH-82 10-RH-3--RH-82 2-RH-29 1-R H-29 2-R H-7 B 2-R H-28 NF-39216-3 NF-39216-3 -RH-67 2-RH-29 F-7" TUBING 2-R H-29 FE 27250 LO 623 1TI 1FT 928 928 1FE 622 1TI 27030 1FT 626A 1HC 1PT 629 21160 4106301 629 19628 ES 620 1PT 17100 PT 1PT 628 19629 ES 17099 PT 11180 PI 27251 FE 626 4302201 12149 DPI 18351 DPI 18352 15347 4202402 23060 4106601 21161 653A 1PI 4302203 1PI 625 1HC 624 1HC 4302202 12150 11128 PI 17101 PT 4106302 627 1TE 626 1FE 626 1FI 628 1PI 11011 PI 630 1TE 15450 4202401 01516979 CAD FILE: U10212.DGN FIGURE 10.2-12 REV. 34 2-2RH-18 8-2RH-9B 6-2RH-10A NF-39246-1 }-2RH-7B XH-1001-3 8-2RH-8 8-2RH-9A" TUBING" TUBING M M 2CC-33-11 12151 10-2RH-11 2WL-64-14 2WL-64-8 2WL-64-10-2WL-39 2WL-53-13" TUBING" TUBING" TUBING 2RH-7-16 2CC-33-10 9 10 2-8714A V 2-8713A D 2-8715A 2-8715B 2-8710A 2-8711A 2-8710B 2-8712A D 31240 CV" TUBING MV 32181" TUBING" TUBING" TUBING 11533 11531 M 32232 MV 32233 MV 32192 MV 2RH-133-6 2RH-133-5 2RH-5-1 2RH-3-1 2RH-1-1 2RH-11-1 2RH-3-2 2RH-1-2 2RH-11-2 2RH-5-2 32169 MV 32235 MV 32167 MV 2RH-133-4 2RH-133-3 32180 MV M 2RH-195-4 2RH-195-3 2RH-135-5 2RH-133-2 2RH-135-7 2RH-7-3 2RH-7-7 2RH-195-2 2RH-135-6 2RH-4-2 2RH-2-2 2RH-3-4 2RH-11-4 2RH-135-4 2RH-195-1 2RH-7-8 2RH-7-4 2RH-135-8 2RH-133-1 2RH-135-3 2RH-11-15 2RH-7-12 2RH-7-14 2RH-11-6 2RH-1-4 2RH-11-8 2RH-2-4 2RH-2-3 2RH-11-7 2RH-7-5 2RH-1-3 10" 6" 10" 6"-2RH-51 V M-2RH-58 32208 MV V 32209 MV M-2RH-59 2RH-7-9 2-2 R H-45 2RH-7-2 6-2 R H-10 B 2-2 R H-46 32108 MV 32109 MV M M (TYP 2) 2" FLUSH CONN -2RH-54 TROUGH IN RESIDUAL HEAT PIT.

6. STEM LEAKOFF ROUTED TO COLLECTION IN REACTOR BLDG SEE DWG NF-39250.

7. FOR ROUTING OF VALVE STEM LEAK OFFS NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 NOTE 6 B-11 B-2 A-2 B-10 B-2 E-4 B-5 H-5 TYP THROUGH FLOOR EXTENSION STEM NF-39237 - CS SYSTEM FLOW DIA. UNIT 1 & 2 NF-39246 CC STSTEM FLOW DIA. UNIT 2 NF-39238 - SM SYSTEM FLOW DIA. UNIT 1 & 2 NF-39248 - WL SYSTEM FLOW DIA. UNIT 1 & 2 NF-39217 CL SYSTEM FLOW DIA. UNIT 2 XH-1001 RC SYSTEM FLOW DIA. UNIT 2 XH-1001 VC SYSTEM FLOW DIA. UNIT 2 XH-1001 SI SYSTEM FLOW DIA. UNIT 2 XH-1001 SI SYSTEM FLOW DIA. UNIT 2 A-8 NF-39238 FC 2FCV-626 G-10 XH-1001-6 F-8 XH-1001-7 C-2 NF-39246-1 C-11 NF-39246-1 H-8 NF-39248-2RH-66 H-9 NF-39248 NF-39246-1 A-11 NF-39246-1 G-6 NF-39237 G-9 NF-39237 622 2TI-2RH-62 REFERENCE DWGS 32193 MV-2RH-55-2RH-65 8. DENOTES CONTAINMENT PENETRATION NUMBER TYP 2 INTERNALS REMOVED STRAINER WITH 245-111 (I/1)REMOVAL PUMP RESIDUAL HEAT 21 245-112 (I/1)REMOVAL PUMP RESIDUAL HEAT 22-" -" " C2 NSR C2 NSR C2 NSR C2 NSR C2 NSR C2 NSR NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS NSR IB III CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. C1 NSR C1 NSR C2 NSR NSR C2 C3 NSR C2 C3 C2 C3 C2 C2 C3 C3 NSR C2 C2 NSR " TUBING-" -" -" -" -" -" -" -" INJECTION LOW HEAD VESSEL REACTOR LINE INJECTION ACCUMULATOR LOOP B (RCS)HOT LEG LOOP A (RCS)HOT LEG LOOP B INJECTION LOW HEAD VESSEL REACTOR (RCS)PRT (CVCS)LINE LETDOWN SUMP B CNTMT RWST SUMP B CNTMT RWST 6-2 R H-10 A TO SI PMP #21 TO SI PMP #22 WATER COOLING COMPONENT WATER COOLING COMPONENT NOTE 9 SEE NOTE 9 SEE SHELL DRN#21 RHR HX SHELL DRN#22 RHR HX SUMP #22 TO RHR PIT TEST LINE CLG WTR TEST LINE CLG WTR SUMP #21 TO RHR PIT

9. SHELL SIDE C3 III IA IA IB IB IA IB III III IB IA IA IB III III III IB IB III III IB IB III III IB IB III IB III III IB IB III III IB IC III IB IB IB IB IB III III III III III IB IC IC IC IC IB IB IB IB TO CS PMP #22 TO CS PMP #21 2CL-99D-2 2CL-99D-1 10. VALVE STEM LEAK OFF LINES ARE NSR.

11. C2/NSR BOUNDARY FOR 2TE-627/630 &

2TI-622/623 IS AT ITS THERMOWELL. DWN: JEK 10-7-09 CHK'D: DB 10-8-09 AS BUILT-77 MOD#: EC-14556 REMOVE QA DESIGNATION AT VALVE 2SM-7-4.

04NS15 PER DRR PI-09-202 APP'D: CMR 11-9-09 REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT PER DRR PI-09-209 MOD#: EC-14781 DWN: MAW 8-03-07 CHK'D: JEK 12-10-09 FILMED: 1-10 REVIEWED: WJI 12-10-09 78 SAFETY CLASS DESIGNATIONS. 1" 2RH-15-2 2RH-14-6 2RH-14-5 6-2RH-10B 2RH-14-1 2RH-14-2 2RH-14-3 2RH-14-4 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MAW 8-03-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 2 5 6 9070 J104 4822 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 81 XH-1001-8 XH-1001-8 by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSRP GENERATION CAD XH-1001-8.DGN FLOW DIAGRAM RESIDUAL HEAT REMOVAL SYSTEM UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 2RH-15-1 1" IB III NSR C2 CHECK VALVE 2RH-6-1.

12. THE INTERNAL PARTS ARE REMOVED FROM 1-2 R H-82 1-2 R H-86 1-2 R H-85 1-2 R H-81 1-2RH-78 1-2 R H-79 CONSTRUCTION ISSUED FOR ADDED VENT VALVES 2RH-15-1, 2RH-15-2 AND 2RH-14-1 THRU 2RH-14-8 &

RELIEF VALVE 2RH-13-1. A.V. SETLUR 4-12-10 PE# 21678 MOD#: EC-13483 79 REVIEWED: CDH 4-12-10 AS BUILT-MOD#: EC-13483 DWN: LAB 7-19-10 CHK'D: RSA 8-4-10 DWN: RPS CHK'D: CDZ 4-12-10 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. "79", DRR PI-10-069 REV. "79" PER INCORPORATED A/E's PE CERT: APP'D: CMR 8-4-10 APP'D: SP 4-12-10 "81" 2RH-14-7 DWN: DB 3-13-13 CHK'D: AP 3-20-13 AS BUILT-80 MOD#: EC-20975 REV'D VLV SYMBOL FOR VLV 2WL-53-13 FROM A CHECK TO NEEDLE VLV @ LOC E-1. PER DRR PI-12-219 APP'D: CMR 3-20-13 2RH-12-5 2RH-12-3 2RH-9-3 2RH-9-1 2RH-12-1 C2 NSR III IB C2 NSR III IB 2RH-14-8 2RH-12-6 2RH-12-4 2RH-9-4 2RH-9-2 2RH-12-2 C2 NSR III IB C2 NSR III IB"81" CONSTRUCTION ISSUED FOR ADDED VENT VALVES 2RH-9-1 THRU 2RH-9-4 AND 2RH-12-1 THRU 2RH-12-6

PE# MOD#: EC-25955 81 REVIEWED: WFW 10-9-15 AS BUILT-MOD#: EC-25955 DWN: MEA 1-20-16 CHK'D: RSA 1-21-16 DWN: WTT 10-9-15 CHK'D: WLS 10-9-15 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 81 , DRR PI-16-016 REV. 81 PER INCORPORATED A/E's PE CERT: APP'D: KJW 1-21-16 APP'D: BTL 10-9-15 2FT 928 4350201 4350202 623 2TI 12152 LO 27031 2FT 626A 2HC 2PT 629 629 17154 PT 621 2PT 2PT 628 17155 PT 11106 PI 626 15348 4250201 23061 4154101 21163 2PI 628 2PI 4154002 4154001 21162 625 2HC 624 2HC 19630 ES 4350203 630/1 2TR 11292 PI 653B 2PI 11291 PI 19631 ES 620 2PT 11105 PI 17153 PT 653A 2PI 17156 PT 928 2FE 626 2FE 626 2FI 627 2TE 630 2TE DPI 18353 15451 4250202 630/2 2TR DPI 18354 M M M M M FO FO 2-8702B 2RH-11-9 2RH-10-1 2RH-10-2 2RH-7-10 2RH-11-5 2RH-7-13 2RH-7-11 2-8705 2-8702A 2RH-7-15 8-2RH-1B 31238 2RH-11-3 2RH-7-17 2-8713B 2-8712B 2-2RH-7B 2-8716B 2-8717A 2-8701B 2-8703 2-8716A 8-2RH-9A 8-2RH-1A 8-2RH-9B 8-2RH-7B 6-2 R H-12 2-2 R H-11 D CV 31239 CV 10-2RH-3 2RH-8-1 2-2 R H-3 2RH-6-1 2RH-7-1 V 2RH-7-19 2RH-11-16 6-2RH-8 RF-15 2SM-7-4 2RH-4-1 2RH-3-3 2RH-2-1 2RH-11-11 2RH-7-6 2RH-2-5 2RH-11-13 2RH-11-12 2RH-11-10 2RH-2-6 2RH-11-14 2-8717B 10-2RH-11 2-2 R H-44 2-8714B-2RH-36-2RH-38-2RH-37-2RH-15-2RH-16-2RH-44-2RH-41 XH-1001-6 -2RH-11 XH-1001-4-2 R H-19 XH-1001-3 V-2 R H-42-2 R H-20 XH-1001-3 D 48" TUBING" TUBING" TUBING" TUBING" TUBING" TUBING V CONN XH-1001-6 ANNULUS AUX BLDG 2-2RH-18 2-2RH-43 1-2 R H-43 8-2RH-4A 10-2RH-3 8-2RH-4B 2-2RH-17 2-2RH-7A 1-2 R H-43 8-2 R H-7 A CASING DRAIN CASING DRAIN-2RH-43 HI LO-2 R H-21-2 R H-22-2 R H-24 HI LO NF-39217-2 -2 R H-35-2 R H-23-2RH-39-2RH-40-2RH-52 8-2RH-5A 8-2RH-5B-2RH-32-2RH-31-2RH-30-2RH-33-2RH-34-2RH-28-2 R H-29-2 R H-26-2 R H-25-2RH-49-2RH-50 LOCAL SAMPLE 1-2RH-4412-2 R H-6 B XH-1001-7 12-2RH-5B-2RH-53 12-2RH-5A12-2 R H-6 A 6-2RH-8-2RH-13-2RH-7A 2-2 R H-43-2 R H-27-2RH-14 8-2RH-8 6-2RH-8 CONTAINMENT XH-1001-6 6" 8-2RH-7B XH-1001-6-2RH-57 E-4 H-10 G-10 F-4 G-7 B-4 G-4 G-8 2HCV-625 2HCV-624-2RH-70" TUBING NF-39217-2 8-2 R H-7 B 10-2RH-3 1-2 R H-44 E-6 XH-1001-7 2-8701A-2RH-56-2RH-64-2RH-63-2RH-60-2RH-67-2RH-68-2RH-61 C2 NSR C2 NSR" TUBING NSR C2 C1 C2 C1 C2 C1 C2 C2 NSR NSR C2 C2 NSR NSR C2 NSR C2 2 SI-195-3 2 SI-195-4 V 2RH-13-1 V NOTE 12 XH-1001-3 B-4 6" FLUSH 1-2RH-77 1-2RH-80-2 R H-77-2RH-5 V V V-2RH-3--2RH-3--2RH-1-2RH-1--2RH-5-2RH-6 V V V--2RH-4--2RH-2-2RH-2--2RH-6-2RH-4 235-022 (I/1) EXCHANGER RESIDUAL HEAT 22 235-021 (I/1) EXCHANGER RESIDUAL HEAT 21 V V V V V V 27253 FE FE 27252 603000001331 CAD FILE: FIGURE 10.3-1 REV. 35 U10301.DGN M M D M S S 017-061 045-411 058-012 045-181 PS 16127 PS 16128 FP-33-16 FP-37-1 FP-12-14 FP-37-5 2-FP-62 FP-47-1 FP-48-3 1-FP-63 1-FP-18 2-FP-18 11 FP-37-2 12 13 14 21 FP-128-1 D 22 23 24 2FP-37-3 2FP-37-2 2FP-37-1 2FP-37-4 FP-37-4 FP-37-3 FP-69-1 (6)2" VALVES 3" SH-2 3"10-FP-17 3" 3" 3" 3" 3" 3" REVISIONS SCREENHOUSE 8-FP-17 8-FP-16 2FP-12-14 FP-68-1" FP-27-1 PS 16129 PS 16130 PS 16131 PS 16132 PS 16133 PS 16134 S 122 FIRE PUMP DIESEL COOLING FP-120-1 FP-45-1-FP-68-FP-68 FP-71-2 FP-121-3 1-FP-68 FP-121-1 FP-121-2 PRV SUBSTATION HH28 HH27 HH29 HH30 HH31 HH33 HH-1 10-FP-20 10-FP-20 6-FP-20 6-FP-20 10" FP-33-15 FI 18206 FE 27136 SV-33049 31131 CV FP-35-7 10-FP-22 10-FP-21 FP-35-7 FP-35-2 FP-35-3 HH-3 6-FP-22 PI 11083 10-FP-24 10-FP-2110-FP-21 6-FP-21 HH-2 6-FP-1810-FP-18 FP-21-5 2" TEST FP-35-1 10-FP-22 10-FP-25 10-FP-22 6-FP-22 8-FP-58 SERVICE BUILDING NF-39228-2 10-FP-30 FP-6-2 10-FP-31 D 2-FP-31 FP-21-6 4"10-FP-30 HH-410-FP-2310-FP-22 FP-35-4 10-FP-27 FP-35-6 10-FP-44 FP-3-6 3-FP-83 1-FP-83 1-FP-83 1-FP-83 D FP-68-43 FP-11-32-FP-83 HH-10 HH-9 10-FP-22 FP-36-1 122 121 123 124 HH-11 HH-12FP-36-2 FP-36-3 10" 6" 6" 10" HH-13 HH-14 HH-15 HH-16 6" HH-19 HH-20 FP-36-6 FP-36-4 HH-18 HH-17 HH-21 6" FP-36-7 HH-22 HH-24 HH-23FP-36-5 6" HH-25 10" HH-26 6-FP-23 HH-5 10-FP-23 FP-35-8 SHIELD BLDG WALL FP-10-1 FP-68-21 FP-12-4 3-FP-49 FP-17-1 FP-13-1 CNTMT WALL FP-12-3" FP-68-16 3-FP-39 FP-20-1 4-FP-39" FP-11-11 4-FP-31 FP-2-6 HH-6 6-FP-23 FP-11-20 FP-9-1 3-FP-44 FP-30-3 FP-30-10 FP-30-11 FP-21-16 1-FP-64 27B FP-21-20 FP-1-3 4-FP-44 2-FP-30 FP-12-16 S H-6 FP-2-4 4-FP-30 4-FP-37 FP-11-9 FP-68-2 FP-2-5 4-FP-31 4-FP-38FP-68-3 FP-11-10 NF-39228-2 FP-3-2 3-FP-31 FP-11-13 2FP-35-410-FP-23 10-FP-23 HH-7 6-FP-20 2FP-41-1 10-FP-27 FP-68-25 FP-12-6 FP-20-2 FP-68-23 1" 4" FP-68-24 1" 2FP-11-24 FP-11-3 10-FP-45 FP-2-14 2FP-12-13" FP-2-13 FP-11-2 2FP-68-10 1" X X X X X X X X""" 10-FP-45 2FP-68-12 FP-2-15 FP-11-4 FP-6-5" 10-2FP-2 FP-21-27 2FP-12-12 X X X X 2FP-35-510-FP-88 10-FP-88 6-FP-88 2FP-35-6 HH32 6-FP-89 10-FP-31 6-FP-20 PI 11346 4-FP-32 4-FP-30 FP-68-4 FP-1-1 FP-7-1 NF-39228-2 TO FP-68-13" FP-11-8 10FP-5-1 6-FP-30 FP-68-14 10-FP-13 32134 MV 46114 CS 14-FP-1 4-FP-30 FS-16956 FP-67-1 FP-2-3 4-FP-30" FP-68-5 FP-11-7 FP-68-9 3-FP-40 4-FP-40 FP-2-7 FP-12-1 4-FP-31 FP-4-1" FP-31-1 FP-83-1 FP-30-2 10FP-28-1 10-FP-5 CNTMT WALL 2FP-73-1 2FP-73-2 4-2FP-12 2FP-13-1 4-2FP-12 4-2FP-24 2FP-17-1 51 FP-35-5 1" FP-11-12 FP-68-12 FP-2-9 FP-11-15 4-FP-46 FP-12-12 4-FP-44 10-FP-44 FP-6-4 FP-6-6 NF-39228-4 FP-32-2 10-FP-26 PI 11345 10-FP-43 FP-11-30 2-FP-60 FP-21-11 10-FP-44 2-FP-44 FP-21-13 FP-21-10 2-FP-44 FP-11-27 WF-97 DET "A" SEEFP-11-1 FP-10-2FP-12-5 FP-68-39 3-FP-52 FP-15-1 FP-2-12FP-3-5 1" FP-1-4 4-FP-45 4-2FP-11 8-2FP-30 3-2FP-50 2FP-84-1 2FP-7-2 2FP-80-1""FP-21-21 4-2FP-2 4-FP-45 FP-6-5 4-FP-44 4-FP-50 FP-2-11 FP-68-11 4-FP-55 2FP-2-5 2FP-11-10 3-FP-45 BLDG ROOF RN-7 AUX FP-68-22 FP-11-28 1-FP-61 1-FP-61 WF-98 3-FP-61FP-11-29 FP-2-14 FP-2-13 10-FP-45 4-FP-45 3-FP-54 4-FP-54 4-FP-45 4-FP-51 FP-11-22" 2FP-68-11 FP-21-19 FP-6-7FP-11-21" 8-FP-4310-FP-44 2" X" X FP-8-1 FP-11-16 FP-68-20 FP-74-5FP-2-10 FP-11-17 4-FP-48 4-FP-44 3-FP-44 FP-68-10 3-FP-47 S PI 11475 FP-18-1 CONTFP-33-17" SH-1 1-FP-62 6-FP-30 FP-5-2 FP-68-1510-FP-22 4-FP-3110-FP-31 2FP-68-3 10-2FP-2 2FP-7-310-2FP-2 FP-12-7 FP-20-3 3-2FP-8 4-2FP-8 FP-11-19 FP-21-22 FP-6-3 2FP-11-18 FP-68-19 RS-5&6 FP-68-18 4-FP-41 3-FP-41 FP-12-2 FP-4-2 RS-3 RS-1 FP-1-2 FP-68-17 FP-2-8 RS-2 FP-11-14 FP-3-3 3-FP-31 FP-11-18 FP-18-3 2FP-2-8 4-2FP-2 2FP-11-14 2FP-68-27 4-2FP-10 NF-39228-3 3-2FP-2 FP-66-1 RS-4 4-2FP-9" 4-FP-42 4-FP-31 1"" 4-FP-34 FP-11-6 FP-68-6 FP-2-2 4-FP-30 4-FP-33 4-FP-35 FP-3-1 FP-68-7 FP-68-8 FP-2-1 FP-11-5 10-FP-30 FP-21-23 FP-6-1 1" 2FP-68-8 2FP-68-7 2FP-11-5 4-2FP-3 4-2FP-1 FP-1-5-2FP-8 2FP-68-9 4-2FP-2 2FP-2-7 FP-96-1 FP-95-1 FS-18238-2FP-910-2FP-1 2FP-11-13 FP-18-4 2FP-21-6 2-2FP-2 2FP-35-7 10-2FP-28 2FP-35-8 10-2FP-2 FP-30-7 10-2FP-1 10-FP-17-FP-17-FP-17 FP-33-19 FP-33-18 4-2FP-1 4-2FP-4 2FP-11-6 2FP-68-6 2FP-2-2 2FP-75-1 6-2FP-1 2FP-68-5 4-2FP-1 4-2FP-5 2FP-11-7 2FP-2-3 2FP-76-1 6-2FP-1 10-2FP-1 2FP-7-1 N F-39228-3 2FP-5-1 3-2FP-24 OFFICE BLDG BLDG TURB FP-91-2 S 1-2FP-26 1-2FP-26 1-2FP-26 FP-124-1 FP-93-6 FP-93-5 FP-92-2 2-2FP-25 1-2FP-25 FP-93-4 2" DFP-29-3 FP-29-1 PI 41272 01 21238 P 4-2FP-6" 2FP-11-8 2FP-1-1 2FP-68-4 10-FP-28 10-FP-29 2FP-68-2 3-2FP-2 4-2FP-1 4-2FP-7 2FP-2-4 2FP-11-9 2FP-21-5 PI 11352 2FP-35-1 2FP-35-2"10-FP-19 2FP-35-3 10-FP-20 PI 11084 4-FP-84 HH-8 6-FP-20 FP-90-1 2FP-36-2 6-FP-91 FP-93-3 FP-94-1 FP-92-1FP-94-2 FP-91-1 FP-93-1 3-FP-84 3-FP-85 2-FP-87 2-FP-87 FP-93-2" FP-12-15 2FP-12-15 6-FP-19 CONT 058-011 FP-12-8 10-FP-14FP-21-3FP-25-3 FP-29-2 FP-28-2 CONT 2-FP-10 CONT 31745 CV SV-33426 FP-21-7 FP-30-1 FP-25-2 2-FP-8 FP-48-2 3-FP-10 2-FP-5 FP-21-1 FP-25-1 FP-18-210-FP-13 3-FP-4 FP-46-1 2FP-75-1 2FP-48-1 1-FP-18FP-48-1 1-FP-66 1-FP-65 S H-3 1-FP-18 S H-4 S FP-28-4 FP-29-4 FP-12-9 2FP-12-16 SH-5 1-FP-67 2FP-48-2FP-29-6 FP-21-14FP-29-5 31746 CV SV-33427 10-FP-15 FP-30-5FP-30-4 2-FP-610-FP-6FP-21-8FP-28-3 10-FP-9 WST CONE 6-FP-914-FP-2 2FP-40-1 27B M S D 6-FP-90 2FP-36-1 N ADMIN BLDG 31133 CV FP-21-12 FP-27-2 SV-33066 FP-30-8 FP-30-9 31744 CV SV-33425 1-FP-81-FP-80 FP-42-21 FP-43-23 3-FP-12 14-FP-3 46466 CS FP-31-3 PI 11472 2-FP-12 2-FP-12 FP-21-9 S FP-30-6 10-FP-7 FP-28-5 FP-6-8 FP-28-6 FP-21-13 10-FP-16 V VFP-12-10 3-FP-11 10-FP-18 FP-70-1 FP-70-2FP-22-1" 2-FP-11 2-FP-11 FP-31-2 2-FP-68 31986 CV 31055 CV SV-33326 PC 26612 4-FP-82 BREAK-DOWN FLG S D 4" CL-31-2 D 1-FP-87 1-FP-87 1-FP-87 1" GH-1 2" 2" 1" 1-FP-87 1" 1-FP-87 1-FP-87 1" 1" 1-FP-87 1"-FP-17 10-FP-13 TO COOLER SCR N.T RAV.-FP-79 1-FP-68 8-FP-14 8-FP-17 D IN DSL OIL STG HOSE TEST MANF 22" TEST 4-FP-34 S (III/3)SCREENS TRAVELING S DISCH PMP FIRE 122 DSL HX 122 FIRE PMP HOSE CONN TO 1" STORAGE AREA DIESEL OIL STORAGE AREA FUEL OIL UNIT 1 TURB BLDG SPRINKLER SYS & TO SERVICE BLDG OPER FLR WF-102 GRD FLR WF-101 PUMP HOUSE COOLING TOWER HOUSE EQUIPMENT ELECTRICAL 6-FP-22 6-FP-22 NF-39228-3 WAREHOUSES PLANT FLGS DURING NORMAL OPER AND BLANKED OFF WITH BLIND FLEX CONN TO BE REMOVED ROOF AUX BLDG RN-4 CONNECTIONS WITH TEST BLIND FLANGE PROVIDE THIS DENOTES EXISTING VA'S IN REF. TO ADDED AIR RLSE VA'S. M BLDG WALL SHIELD WF-100 RSN DISP BLDG WITH TEST CONNS THIS BLIND FLG PROVIDE NF-39228-5 PREACTION SYS D5/D6 BLDG FP NF-39228-5 DELUGE SYS 21 FO RCVG FP RSN DISP BLDG LEAK RATE FOR CNTMT TEMP WTR SPLY 3 CONN FOR FIG 1 SEE AUX BUILDING RDWST BLDG TURBINE ROOM NF-39228-2 WF-24, 735' RN-2, 755' NF-39228-3 NF-39228-3 TO NPD & WHSE UNIT 2 UNIT 1 NF-39241 DPWLL PMPS FR 121 & 122 NF-39241 121 WELL WTR TNK GEN BLDG EMERG VLV DE-2 DELUGE CONN 1" TEST NF-39228-2 TO WF-12, 735' WF-11, 715' WF-10, 695'(TYP)SPRINKLER HEAD GUARD HSE (III/3)WTR STRNR FIRE PMP 121 (III/3)FP JOCKEY PMP 121 (III/3)WTR STRNR FIRE PMP 122 HYDRANT & HOSE HOUSE (HH) CONTAINMENT PENETRATION AIR RELEASE VALVE MOTOR DRIVEN BUTTERFLY VALVE W/ POST INDICATOR STRAINER DIESEL DRIVEN"SH" & "WF" WATER FOG FIRE HOSE STATION VALVE SEALED OPEN (WIRE TAG SEAL) VALVE SEALED CLOSED (WIRE TAG SEAL) FURNISHED W/ EQUIPMENT SERVICE WATER HOSE W/ VALVE & COUPLING CONT WAREHOUSE#5 NORTH CONN TEST CABINET FIREHOSE FIG 2 SEE 130 PSIG(TYP) SET AT RLF VLV 058-051 (III/3) STRNR FP-50-4 FP-73-1 FP-73-2 SCREEN HOUSE NF-39216-1 CL SPLY E-5 D D V NF-39228-4 ENCL DET "B" LVL RDWST 6" TO LOW NORMAL OPER BLIND FL'S DURING BLANKED OFF WITH TO BE RMV'D & FLEX CONN NF-40318 INRTERLOCK LOGIC NF-39228-4 (III/3)COOLING TOWERS REACTOR BUILDING UNIT 1 REACTOR BUILDING UNIT 2 FIG 1 FIG 3 DETAIL "A" C2 NSR C2 NSR NSR C2 NSR C2 NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C2 - SAFETY-RELATED; ISI CLASS 2 NSR - NON-SAFETY-RELATED CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR CONT S S S S SV-33139 SV-33137 SV-33136 SV-33135 SV-33138 SV-33140 S SV-33141 S SV-33142 S CONT CONT CONT CONT HOSE STA SERV WTR SCREENS TRAVELING CONT CONT (TYP)4-FP-17 CONT CW-57-1 CW-57-2 CW-57-3 CW-57-4 2CW-57-1 2CW-57-2 2CW-57-3 2CW-57-4 S V-37074 IIB IB 1-FP-18 1-FP-18 1-FP-80 IIB IB IIB IB IB IIB LO 1" LO HOSE STATION SERV WTR 2" FP-21-17FP-21-15 2"" 8" 8" 10" 140 PSIG SET @RELIEF VA 2" 2" 2" 10" 6" 045-022 (III/3)FIRE PMP D/D 122 10" 8" HOSE STATIONS SERVICE WATER 2" 1"" 6" 1"" 2FP-11-23 LO LO" 4" BLDG ROOF RN-6 AUX 4-FP-53 FP-74-4 WPS-27 TO 4" WF-85, 755' WF-84, 735' WF-83, 715' WF-82, 695' VENT FLR FUEL &WF-25 WF-71 WF-73 WF-72 1" 1" 1" VLV DE-1 DELUGE 1-FP-85 1" 1"& HOSE STATION SPRINKLER SYSTEM FIRE PROTECTION PIPING UNDERGROUND WATER 2-FP-86 1-FP-86 D 8""FP-21-2 (TYP)" 2"" WF-77, 755' WF-76, 735' WF-75, 715' WF-74, 695' WF-58, 735' WF-57,715' WF-56, 695' LO LO WF-67, 735' WF-66,715' WF-65, 695' RN-5 WF-52, 735' WF-51,715' WF-50, 695' WF-55, 735' WF-54,715' WF-53, 695' WF-64, 735' WF-63, 715' WF-62, 695' WF-70, 735' WF-69, 715' WF-68, 695' WF-49, 735' WF-48,715' WF-47, 695' " 1" LO LO D D" 3" 8" 1" 4" LO" 1"" LO 1" LO LO""" 1" LO 1" LO LO" 1" LO LO LO"" 1" 1" 1" 3" 2" SPRINKLERS AFWP 4" TO WF-61, 735' WF-60,715' WF-59, 695' WF-15, 735' WF-14,715' WF-13, 695' WF-9, 735' WF-8,715'WF-7, 695' 1" LO LO LO" WF-6, 735' WF-5,715'WF-4, 695' 2" 1" WF-21, 735' WF-20,715' WF-19, 695' RN-1,755' 1" LO WF-3, 735' WF-2,715'WF-1, 695' 1"" LO WF-18, 735' WF-17,715' WF-16, 695' LO LO 1""" NF-100282 BLDG 4" TO SERV LO"" SPRINKLER SYS TO UNIT 2 TURB NF-39228-3 TO 2-2FP-1 1" WPS-29 1" 10" WF-28, 735' WF-27, 715' WF-26, 695' RN-3 SERV BLDG ROOF LO 1" 1"" WF-29, 755' WF-94, 735' WF-95, 715' WF-96, 695' LO" 2" 2" LO WF-23, 715' WF-22, 695' LO"" L O L O 4-FP-57 4-FP-56 10-FP-22" LO LO LO 1"" TO WPS-28 WF-46, 755' WF-45, 735' WF-44, 715' WF-43, 695' 1" W-30,755'LO 4-FP-31 2" WF-38, 755' WF-37, 735' WF-36, 715' WF-35, 695' WF-93, 755' WF-92, 735' WF-91, 715' WF-90, 695' LO LO 4" 4" LO LO D 1" 1" 6" 8" 2" C-6 NF-86172-4 CONN 10" FUTUREFP-32-1 LO 3-FP-44 8" LO 1"""" WF-99 C-4 NF-86172-4 10" 6" 10" 10" 6" 10" 10" 6" 6" (TYP)10-FP-23 3" 1" IIB REFERENCE PIPING DRAWING NOS. FIRE PROTECTION & SCREEN WASH PIPING SYSTEM: NF-39261-1, NF-39261-2 NF-39300-1, NF-39300-2, NF-39300-3, NF-39300-4 NF-39300-5, NF-39300-6, NF-39300-7, NF-39300-8 & NF-39301-1, NF-85563, NF-85565, NF-156066 SYSTEM: COOLING WATER PIPING NF-39216-1 & 3 SYSTEM: ZX CHILLED WATER PIPING NF-86172-4 DENOTES WATER FOG NOZZLE DENOTES FLEXIBLE CONNECTION DENOTES DELUGE VALVE LO LC LO LO 2" 1" 6" AD-1, 695' AD-2, 715' AD-3, 735' AD-4, 755' WF-89, 755'-0" WF-88, 733'-9" WF-87, 711'-6" WF-86, 697'-6" WF-81, 755'-0" WF-80, 733'-9" WF-79, 711'-6" WF-78, 697'-6" WF-34, 755'-0" WF-33, 733'-9" WF-32, 711'-6" WF-31, 697'-6" WF-42, 755'-0" WF-41, 733'-9" WF-40, 711'-6" WF-39, 697'-6" IIB IIB IIB IIB IIB IIB IIB IIB IIB IIB IIB IIB (III/3)SCRN WASH PMP 121 IIB CONT TYP 5 PLCS NF-39228-3 SPRINKLER SYS TO SCRNHSE SEE FIG 3 FIG 3 SEE DE-130-4 DE-130-2 DE-130-1 DE-130-3 DE-130-5 USE FUTURE CONNECTION AIR PURGE 1"" 1""94" NF-39244-1 TO AIR COMPRS 1" TEMP WTR SPLY DWN: JEK 3-25-15 CHK'D: MJL 4-1-15 AS BUILT-90 MOD#: EC-22499 ADDED REF DWG NF-39244-1 TO 1" TEMP WTR SPLY TO AIR COMPRS AT GRID D-6. PER DRR PI-15-043 APP'D: KJW 4-2-15 DWN: DB 5-19-14 CHK'D: RLM 5-20-14 AS BUILT-86 MOD#: EC-22655 ADDED VLV FP-70-3 @ LOC F-2.

PER DRR PI-14-078 APP'D: CMR 5-20-14 DWN: LAB 11-4-14 CHK'D: JLS 11-5-14 AS BUILT-87 MOD#: EC-24627 ADDED VALVE DE-130-5 @ LOC G-8.

PER DRR PI-14-165 APP'D: CMR 11-5-14 DWN: JEK 12-29-14 CHK'D: RLM 12-30-14 AS BUILT-88 MOD#: EC-14228 ADDED VLVS FP-103-7, FP-103-15 & 16, FP-24-5 & FP-26-1 AT GRID C-2.

PER DRR PI-14-196 APP'D: CMR 1-5-15 DWN: DB 12-16-14 CHK'D: KB 1-6-15 AS BUILT-89 MOD#: EC-23171 REV'D VLV FP-29-5 TO FP-50-4. ADDED CL WTR SYS VLV NOS & CONT @ D-2, & C-6. PER DRR PI-14-200 APP'D: CMR 1-6-15 USE FUTURE FP-70-3 CL-70-7 A-3 NF-39216-2 CL SYS 4" FR CW-77-3-FP-69 FP-103-7 FP-25-4 FP-26-1 FP-71-1 (III/3)FIRE PMP MD 121 045-021 D FP-103-16 FP-103-15 ATMOS" 2" A-7 NF-39216-1 FLTR WTR PMP 2FP-35-11 2FP-35-12 SAB DWN: LAB 6-23-15 CHK'D: TJP 6-23-15 AS BUILT-91 MOD#: EC-23324 ADDED VALVES 2FP-35-11 & 2FP-35-12, FIRE PROTECTION SUPPLY LINE TO SAB @ LOC G-3. PER DRR PI-15-082 APP'D: KJW 6-24-15 USE FUTURE DWN: MEA 2-10-16 CHK'D: TLL 3-3-16 AS BUILT-92 MOD#: EC-23550 TO PROJECTS 9 WIDE CHANGED TO FUTURE USE.

PER DRR PI-16-042 APP'D: KJW 3-9-16 FP-148-1 FP-103-6 FP-103-5 PI 11474 PI 11121FP-103-11 PI 11119 PI 11473 FP-103-4 FP-103-10 FP-103-3 FP-103-12 PS 16074 PS 16044 PS 16043 PI 11082 PS 16187 PS 17641 FP-103-8 PI 11482 FP-103-14 DWN: LAB 4-27-16 CHK'D: RLM 5-2-16 AS BUILT-93 MOD#: EC-22975 ADDED VALVE ID'S FP-148-1 & SV-33550. ADDED PI-11482 & ROOT ISOLATION VALVES VALVE TO A BALL VALVE. FP-103-7 FROM A GATE FP-103-14. CHANGED VALVE 10, FP-103-11, FP-103-12 AND FP-103-6, FP-103-8, FP-103-FP-103-3, FP-103-4, FP-103-5, PER DRR PI-16-111 APP'D: DB 5-2-16 SV-33892 DWN: MEA 12-19-16 CHK'D: DEM 12-20-16 AS BUILT-94 MOD#: EC-27894 FIELD VARIFIED SOLENOID VALVE FROM 33550 TO 33892

PER DRR PI-16-284 APP'D: DB 12-20-16 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. JEK 7-15-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 5 6 CL SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 94 39228-1 NF-39228-1 N F-NSP GENERATION CAD NF-39228-1.DGN FLOW DIAGRAM FIRE PROTECTION & SCREEN WASH SYS UNIT 1 & UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 01516979 CAD FILE: U10302.DGN FIGURE 10.3-2 REV. 34 MOD#: 94L439 DWN: 7-12-95 CHK'D: DJP 7-18-95 AS BUILT-FILMED: 8-21-95 AS OUTLINED

PER DRR PI-95-42 K REVISED FIRE PROT. PIPING 3" 5" 5" 2" NX-56474-1 NX-56474-1 PROTECTION SYSTEM PH-14 AND TURBINE BEARING FIRE X-HIAW-106-33, 35 & 37 SPRINKLER SYSTEM WPS-9 5" TO TURBINE ROOM (EAST SIDE) SPARE FP-131-1 DETAIL A SEE FP-53-4 2FP-57-2 DRAIN NX-56474-3 CAPPED BRANCH NX-56474-3 SYSTEM WPS-18 AND TURBINE OIL SPRINKLER DRAIN AUX. DRAIN SV-33925 MANUAL PULL PRIMING WATER FP-131-1 FP-117-2 PI FP-126-3 FP-132-1 PS 16938 A FDP FP-126-4 PREACTION SYSTEM TURBINE/GENERATOR SV-33924 DRAIN BEARING TO EXCITER FP-134-1 FP-133-1 SA-108-Z SA-109-4 SA-109-3 A FDP PS 17848 LOW AIR PRESSURE ALARM PI A FDP PS 17847 ALARM PRESSURE LOW AIR REGULATOR AIR SA-109-1 SA-109-2 SA-108-1 JB-4 FROM AIR ALARM WATER FLOW VALVE TRIP SOLENOID S S DETAIL A NX-56474-1 PREACTION SYSTEM PA-14 TURBINE BEARING FIRE PROTECTION STORAGE TANK

1. 121 TURBINE OIL 2" 2" A PS FDP 16933 FP-39-3 FP-123-3 10" 3" DRAIN X-HIAW. 106-34 & 35 CONTRACTOR BY SPRINKLER SPRINKLER SYSTEM DA-2 OIL STORAGE ROOM TO TURBINE 10" ELEV.X-HIAW.106-202 & 203 SYSTEM DM-3 LOOPS SPRINKLER TOP & BOTTOM TRANSFORMER #1-R TRANSFORMER NO. 1-R 4" GALVANIZED 6" 3" STRAINER 6" HELLAN 2" DRAIN 3" DRAIN FP-118-1 10" BY SPRINKLER CONTRACTOR 6" FP-38-3 FP-56-3 A FDP 16937 PS X-HIAW. 106-202 & 203 SPRINKLER SYSTEM DM-2 TOP & BOTTOM LOOPS TRANSFORMER #1-M TRANSFORMER NO. 1-M GALVANIZED 4" 6" 2" DRAIN FP-38-2 FP-56-2 3" DRAIN FP-118-3 3" 6" STRAINER 6" HELLAN FP-56-1 FP-38-1 FP-118-2 TRANSFORMER NO. 1-GT MAIN GALVANIZED 6" 10" 4" BY SPRINKLER CONTR.

DRAIN 2" 3" 3" DRAIN SEE X-HIAW. 106-287 SPRINKLER SYSTEM SWP-5 2" TO STAIRWAY A FDP A FDP 16520 FS 11838 PI 16537 PS 1" WASTE 1" DRAIN TO FP-57-3 3" 6" A FP-63-1 FP-50-1 X-HIAW. 106-33, 34 & 35 SYSTEM WPS-7 (NORTH END) SPRINKLER 6" TO TURBINE ROOM FP-53-1 8" 8" BOILER HEATING CONTRACTOR BY SPRINKLER CONTRACTOR BY PIPING 2" 2" DRAIN TO WASTE FP-49-1 FP-55-1 FP-21-26 2" 2" SEE FIRE PROTECTION TURBINE BEARING SPRINKLER REACTOR WATER MAKE-UP TANK #12 MOD#: DWN: BMS 6-17-96 CHK'D: AS BUILT-PED

PER DRR PI-96-107 FILMED L CORRECTED VALVE FP-53-17 TO N.C. FROM N.O. & CAP-PA -DA -DM -SWP - WPS - DENOTES PRE-ACTION AUTOMATIC DENOTES DELUGE SYSTEM-AUTOMATIC DENOTES DELUGE SYSTEM-MANUAL DENOTES STAIRWAY WET PIPE SYSTEM DENOTES WET PIPE SYSTEM DENOTES STRAINER DENOTES DELUGE VALVE DENOTES ANGLE VALVE FURNISHED BY PIPING CONTRACTOR DENOTES PIPING SHOWN ON DWG. NF-39228-1 DENOTES ALARM CHECK VALVE A DENOTES AIR CHECK VALVE A FDP DENOTES FIRE DETECTION PANEL DENOTES AIR RELEASE VALVE LEGEND DWN: DB 6-29-12 CHK'D: AP 10-17-12 AS BUILT-76 ADDED PRESSURE INDICATORS 18120 THRU 18125.

PER DRR PI-12-135 APP'D: CMR 10-17-12 18120 PI 18123 PI 18125 PI 18124 PI 18122 PI 18121 PI FP-137-2 FP-137-1 AS BUILT-TO FP DELUGE VLV AIR REG. ADDED EQUIP IDS FP-137-1,2 DWN: DB 6-29-12 CHK'D: SJG 10-17-12

PER EC-20021 PER EC-18994 DRAIN 2" FP-65-4 DRAIN 2" DRAIN 2" FP-65-3 FP-65-5 DWN: JEK 12-5-12 CHK'D: AP 12-7-12 AS BUILT-77 MOD#: EC-20822 ADDED DRAINS FP-65-3, FP-65-4 & FP-65-5.

PER DRR PI-12-232 APP'D: CMR 12-10-12 FP-126-5 DWN: KJF 10-28-13 CHK'D: RLM 10-29-13 AS BUILT-78 MOD#: EC-18864 ADDED MISSING VALVE ID FP-126-5 TO DETAIL A.

PER DRR PI-13-198 APP'D: CMR 10-30-13 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. SAB 7-12-95 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4500 8050 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 79 39228-2 NF-39228-2 N F-NSP GENERATION CAD NF-39228-2.DGN FLOW DIAGRAM SPRINKLER FIREPROTECTION SYSTEM TURBINE ROOM A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. NX-236952-2 SPRINKLER SYSTEM DA-7 TOP & BOTTOM LOOPS TRANSFORMER #1-GT "79""79""79" CONSTRUCTION ISSUED FOR REMOVE PS-16935, UPDATE SPRINKLER SYSTEM NUMBER DM-1 TO DA-7 FOR 1GT SPCE-ME-0621. PER AS-BUILT PER ALSO REMOVED PS-16936 XFMR & REV'D DWG REF. KEN J. NETZEL 9-4-14 PE# 49677 MOD#: EC-21622 79 REVIEWED: KJN 9-4-14 AS BUILT-MOD#: EC-21622 DWN: LAB 7-7-15 CHK'D: TJF 7-21-15 DWN: LAB 8-18-14 CHK'D: MAT 9-3-14 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. "79", DRR PI-15-079 REV. "79" PER INCORPORATED A/E's PE CERT: APP'D: KJW 7-29-15 APP'D: MLM 9-11-14 603000001331 CAD FILE: FIGURE 10.3-3 REV. 35 U10303.DGN S MOD#: 94L439 DWN: CHK'D: AS BUILT-FILMED: 10-30-95 REVISED TURBINE BEARING FIRE PROTECTION SYSTEM

PER DRR PI-95-82 10-23-95 2FP-97-1 17856 PS FDP A REG.AIR 2FP-98-1 INST. AIR FROM 2FP-95-1 PA-15 2FP-94-1 PULL MANUAL SEE NF-39288-5 FP HEADER FROM FP-126-2 FP-126-1 FP-38-6 FP-100-1 FP-32-2 2FP-64-1 2FP-60-1 2FP-46-1 2FP-66-1 2FP-45-2 2FP-59-1 2FP-45-1 2FP-35-10 2FP-58-1 2FP-44-1 2FP-35-9 2FP-67-1 2FP-61-1 2FP-47-2 2FP-47-1 2FP-35-7 2FP-35-8 Q MOD#: DWN: WHS 8-4-94 CHK'D: GPD 8-15-94 AS BUILT-FILMED: 8-25-94 CHANGE 4" LINE NUMBER FOR NPD ANNEX. BLDG. SPRINKLER SYSTEM PER DRR PI-94-62 PREACTION SYSTEM ADDED DETAILS FOR MOD#: 94L439 DWN: SAB 7-11-95 CHK'D: PAS 8-17-95 AS BUILT-FILMED: 8-21-95 PIPING AS OUTLINED

PER DRR PI-95-42 R REVISED FIRE PROT. MOD#: DWN: SAB 4-29-96 CHK'D: GPD 4-19-96 AS BUILT-

PER DRR PI-96-61 FILMED 5-8-96 MOD#: 91L282 DWN: BMS 10-22-96 CHK'D: AS BUILT-ADD KARDEX SPRINKLERS.

PER DRR PI-96-164 FILMED 4-2FP-29 SEE X-HIAW-1106-2502 AND NX-56474-4. WET PIPE SYSTEM WPS-16 AND TURBINE OIL PIPE WPS-21, TO TURBINE ROOM (EAST SIDE AND SOUTH SIDE) 2FP-57-2 DRAIN WPS-16 2FP-53-4 NX-56474-4 WET PIPE SYSTEM WPS-21 TURBINE OIL PIPE 2FP-53-3 CONNECTIONS CAPPED SPARE PI 11841 SV-33933 17855 PS FDP A BEARING #9 TO EXICTER REG.AIR 2" 16939 FS FDP A SEE NX-56474-4 PRE-ACTION SYS TURBINE BEARING BELOW EL. 735'-0" SV-33931 DRAIN AUX. DRAIN MANUAL PULL PRIMING WATER PI PS A FDP PREACTION SYSTEM TURBINE/GENERATOR DRAIN BEARING TO EXCITER A FDP PS LOW AIR PRESSURE ALARM PI A FDP PS ALARM PRESSURE LOW AIR REGULATOR AIR ALARM WATER FLOW VALVE TRIP SOLENOID S S DETAIL S NX-56474-4 PREACTION SYSTEM PA-15 TURBINE BEARING FIRE PROTECTION 17855 SV-33933 2FP-98-2 2FP-97-1 2SA-81-2 2SA-82-4 2SA-82-3 17856 2SA-82-1 46 FROM LAST 2SA-81-1 2SA-82-2 SV-33931 16939 2FP-96-1 2FP-67-3 2FP-98-1 2FP-94-1 2FP-67-2 2FP-95-1 HEADER FROM FP SEE DETAIL 'S', THIS SHEET 8FP-77 FOR CONTINUATION SEE DWG. NF-39228-1 2 DRAIN 2 DRAIN DE-3, SEE DWG. X-HIAW-2400-180 TO WAREHOUSE #2 SPRINKLER SYSTEM WAREHOUSE #2 YARD AND NPD BLDGS. FP. PIPING A/S FROM AIR COMP. PI PS 15416 18743 PI A 18742 FDP SPRINKLER SYSTEM TO NPD ANNEX BLDG. A FDP PS 16415 2DRAIN NPD (ANNEX) OFFICE FP. 6-2FP-29 66FP. SYSTEM OFFICES TO MODULAR 10-2FP-28 466-2FP-28 HH-34 10FP.N P D OFF I C E PI 18741 2TO DRAIN 4-2FP-30 41FUTURE TIE-IN 1 VENT 12212-2FP-30 (HOSE STATION) WF-103 2-2FP-31 CONNECTION DEPARTMENT FIRE WF-108 (HOSE STATION) 6FUTURE TIE-IN HH-35 1010-2FP-28 HH-8 1010-2FP-27 SYSTEM TO KARDEX DWN: KJF 6-23-11 CHK'D: JEH 6-27-11 AS BUILT-76 MOD#: EC-18322 REMOVED PS-16541 FROM SPRINKELER SYSTEM DM-5.

PER DRR PI-11-110 APP'D: CMR 6-29-11 18127 PI 18118 PI 18126 PI 18119 PI 18128 PI 18117 PI 2FP-137-2 2FP-137-1 DWN: DB 6-29-12 CHK'D: SJG 10-17-12 AS BUILT-77 ADDED PRESSURE INDICATORS 18117 THRU 18128.

PER DRR PI-12-135 APP'D: CMR 10-17-12 AS BUILT-& 2 TO FP DELUGE VLV ADDED EQUIP IDS 2FP-137-1 AS BUILT-CORRECTED PRESSURE INDICATOR 18472 TO READ 18742. PER EC-20021 DWN: DB 6-29-12 CHK'D: SJG 10-17-12 DWN: DB 6-29-12 CHK'D: AP 10-17-12 MOD#: EC-18994 PER EC-20016 AIR REGULATOR. 2FP-67-4 T U DWN: KJF 10-28-13 CHK'D: RLM 10-29-13 AS BUILT-78 MOD#: EC-18864 ADDED MISSING VALVE ID 2FP-67-4 TO DETAIL S.

PER DRR PI-13-198 APP'D: CMR 10-30-13 NX-236952-3 SPRINKLER SYSTEM DA-8 TOP & BOTTOM LOOPS TRANSFORMER #2GT CONSTRUCTION ISSUED FOR CHANGED DM-5 TO DA-8. CHANGED DRAWING REFERENCE FOR DA-8.

KENNETH J. NETZEL 12-30-14 PE# 49677 MOD#: EC-21623 79 REVIEWED: KJN 12-30-14 AS BUILT-MOD#: EC-21623 DWN: JEK 2-8-16 CHK'D: KJN 2-9-16 DWN: JRM 12-3-14 CHK'D: MAT 12-30-14 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 79 , DRR PI-16-037 REV. 79 PER INCORPORATED A/E's PE CERT: APP'D: KJW 2-9-16 APP'D: MLM 12-30-14 NX-267671-1 SPRINKLER SYSTEM DA-10 BOTTOM LOOPS TRANSFORMER 2M TOP & REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. SAB 7-12-95 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 400 5 6 4410 8050 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 80 39228-3 NF-39228-3 N F-NSP GENERATION CAD NF-39228-3.DGN FLOW DIAGRAM SPRINKLER FIRE PROTECTION SYSTEM TURB. RM. UNIT 2 - SCREENHSE. UNIT 1&2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. "80""80" CONSTRUCTION ISSUED FOR CHANGED DM-4 TO DA-10, CHANGED DWG REFERENCES FOR DA-10. UPGRADE 2M TRANSFORMER FIRE PROT. DEAN Z. TOLETE 11-07-16 PE# 53994 MOD#: EC-26822 80 REVIEWED: VK 11-07-16 AS BUILT-MOD#: 6MOD00026822 DWN: DPB 03-13-18 CHK'D: JB 03-15-16 DWN: AM 11-07-16 CHK'D: MM 11-07-16 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 80 , DRR PI-18-023 REV. 80 PER INCORPORATED A/E's PE CERT: APP'D: DB 03-19-18 APP'D: RWS 11-07-16 01516979 CAD FILE: U10304.DGN FIGURE 10.3-4 REV. 34

• • • • Q MOD#: 92Y190 DWN: CLN 9-30-94 CHK'D:

AS BUILT-FILMED: ADDED SPRINKLER HEADER ISOL. VALVE TO LAUNDRY SORTING ENCLOSURE.

PER DRR PI-94-70 FP-64-2 VALVE ENCLOSURE ISOLATION LAUNDRY SORTING 6-FP-77 KEY PLAN UNIT 1 UNIT 2 1 2 11 15 17 A G T 3-FP-78 N BLIND FLANGE TO WASTE 1" DRAIN FP-60-1 CONTRACTOR BY SPRINKLER SPRINKLER SYSTEM X-HIAW-106-247 TO RELAY ROOM & COMPUTER ROOM PROVIDE BLIND FLANGES TO ISOLATE SUPPLY CONT. SEE NF-39603-4 TO VENTILATION FILTER FOR SEE G-2 FIRE PROTECTION & COMPUTER ROOM FOR RELAY ROOM WPS-11. X-HIAW-106-34 SPRINKLER SYSTEM-MACHINERY ROOM TO ELEVATOR & CONT. SEE NF-39603-4 TO VENTILATION FILTERS. FOR CONTRACTOR BY SPRINKLER X-HIAW-1106-2589 PRE-ACTION SYSTEM PAD-7 ELECTRICAL PENETRATION 1" DRAIN 1" DRAIN DRAIN 1" UNIT #2 REACTOR BUILDING X-HIAW-1106-2589 PRE-ACTION SYSTEM PAD-6 ELECTRICAL PENETRATION X-HIAW-1106-201 PRE-ACTION SYSTEM PAD-3 ELECTRICAL PENETRATION X-HIAW-106-201 PRE-ACTION SYSTEM PAD-4 ELECTRICAL PENETRATION UNIT #1 REACTOR BUILDING MOD#: 96FP03 DWN: cln 09-17-96 CHK'D: PAS AS BUILT-REMOVED FP-51-2 INSTALLED BLIND FLANGE

PER DRR PI-96-144 FILMED 10-1-96 R LEGEND DENOTES FIRE DETECTION PANEL DENOTES FURNISHED WITH EQUIPMENT DENOTES THE EQUIPMENT QA TYPE & DESIGN CLASS DENOTES AIR RELEASE VALVE PIPING CONTRACTOR DENOTES SPRINKLER PIPING HEADER BY (III/3)*A FDP MOD#: 91L282 DWN: BMS 10-22-96 CHK'D: AS BUILT-ADD SPRINKLER FOR TRASH COMPACTOR AREA.

PER DRR PI-96-164 FILMED S ROOM (DETAIL "C") TRASH COMPACTOR SPRINKLER TO BLDG.WASTE RAD ROOM COMPACTOR TRASH BLDG.AUX.NEW PIPE 3" SWP-1 EXISTING 2" FP-53-11 1" EL. 695'-0" DETAIL "C" TRASH COMPACTOR SPRINKLER T MOD#: DWN: AJG 8/4/03 CHK'D: CMR 8/6/03 AS BUILT-FILMED: 8/03 ADD VENT/DRAIN ON NE CORNER OF WPS-27

PER DRR PI-03-121 FP-57-15 FP-57-14 FP-57-13 REVISIONS 200 750 U MOD#: DWN: WLI 1-11-5 CHK'D: CMR 1-11-05 AS BUILT-FILMED: 2-05 ADDED EXISTING VALVES AND VALVE ID FP-67-13, FP-57-14 AND FP-16-1 PER DRR PI-05-005 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. CLN 9-30-94 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4410 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 82 8050 39228-4 NF-39228-4 N F-by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSP GENERATION CAD NF-39228-4.DGN FLOW DIAGRAM SPRINKLER FIRE PROTECTION SYSTEM AUXILIARY & REACTPR BLDG. A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 3"" FP-16-1 FP-14-1 (TAGGED OPEN) PILOT CABINET ELECTRO-MANUAL 19419 EMPC PS PS PS-16159 PE-1 & PE-2 PRESSURE RELAY 062-501 (TAGGED OPEN) " III FP-14-2 DWN: LAB 11-14-08 CHK'D: BSK 11-17-08 AS BUILT-FILMED: 12-08 76 MOD#: EC-13376 INSTALL PILOT PRESSURE ISOLATION VALVE FP-19-1. CORRECTED PREVIOUS ERRORS & OMISSIONS. PER DRR PI-08-089 LOC. C-1 D1/D2 CL SUPPLY LINES FROM NF-39255-1 COOLING WATER CROSSTIE DWN: KJF 4-29-10 CHK'D: JBS 10-12-10 AS BUILT-77 MOD#: EC-14472 ADDED COOLING WATER CROSSTIE PIPING AND DRAWING CONTINUATION FROM D1/D2 SUPPLY LINES. PER DRR PI-10-163 APP'D: CMR 10-18-10 PI 18129 DWN: DB 10-16-12 CHK'D: KB 10-16-12 AS BUILT-78 MOD#: EC-20647 ADDED PI-18129 TO WPS-28. @ LOC D-7.

PER DRR PI-12-188 APP'D: CMR 10-16-12 NF-39300-11 SYSTEM WPS-20 ACCESS CONTROL SPRINKLER DWN: JEK 6-24-13 CHK'D: KB 7-19-13 AS BUILT-79 MOD#: EC-18667 REVISED DWG REF TO NEW ACCESS CONTROL SPRINKLER SYSTEM WPS-20 DWG, NF-39300-11. PER DRR PI-13-102 APP'D: CMR 7-29-13 CON T R A C T O R B Y SP R INKLE R FROM COOL WTR SYS NF-39217-2 F-4 2CL-78-1 PI 11846 2FP-57-6 2CL-78-2 FP-33-3" DRN FROM COOL WTR SYS NF-39217-2 C-4 3" 3" FP-33-2 CW-78-2 3" SPRINKLER DRN CW-78-1 3" FROM COOL WTR SYS NF-39216-3 B-4" DRN H.A.D.FP-39-5 FP-68-32 DRN FP-53-9 FP-33-9 FROM COOL WTR SYS NF-39216-3 E-4 CNTRCTR FP-123-1 XH-106-247 3" TO WPS-19 3-2FP-21 1" DRN 3" 1" ODORIZER FP-19-1 DWN: DB 12-16-14 CHK'D: KB 1-6-15 AS BUILT-80 MOD#: EC-23171 REV'D VLV# FP-50-6 TO FP-53-6. ADDED 3" CL PIPING AND DWG CONTINUATIONS & ODORIZER. PER DRR PI-14-200 APP'D: CMR 1-6-15 "82" NX-56474-4 DWN: JEK 1-21-15 CHK'D: JKS 2-5-15 AS BUILT-81 MOD#: EC-21578 ADDED CARDOX SYSTEM ODORIZER 062-501.

PER DRR PI-15-014 APP'D: CMR 2-5-15 FP-50-6 DWN: DB 9-29-15 CHK'D: KB 10-18-15 AS BUILT-82 MOD#: EC-25815 REV'D VLV# FP-53-6 TO FP-50-6.

PER DRR PI-15-118 APP'D: KJW 3-9-16

603000001331 CAD FILE: FIGURE 10.3-6 REV. 35 U10306.DGN -26 HFD SV-37006 34190 CD FC SAS NOTES: ES 19439 2-WG-69 26388 TC R-29 RE-29034 FROM 2R-11/12 RAD MONITOR NE-39790-4 FROM 2R-11/12 FAN 122 TRAIN "B" SV-33143 34040 CD TC 26385 SV-33825 SV-33308 ES 46104 SV-33824 SV-33289 TC 26384 34037 CD FC SV-33057 RE-4#11 & #12 GAS STRIPPER PUMPS AREA HOLD-UP TANK & PUMPS AREA TE-15783 28,880 57011 18283 FI 29049 RE 29004 RE 29050 RE 17601 FT 27115 FE 23215 FT 29005 RE22 ,08510 ,9259485 16,265 V.D.33,010 6375 FC 18282 FI 27114 FE 17600 FT 46101 ES SV-33455 34046 CD 1950 EXH. STACK AUX. BLDG. SV-33401 34005 CD18754785 36042 CD 36041 CD2070 EX. AREA POOL HEAT SPENT FUEL AREA PUMP GALLERY BORIC ACID 67804710 TRAIN "A" 5000 57007 19005 ES 700 1875 P A C WALL BLDG TURB 735 LEVEL TURBINE DECK AUX. BLDG SPECIAL VENT EXHAUST (QA TYPE I)"CAM" UNIT POINT FOR SAMPLE#11 LAUNDRY EXHAUST FILTER 3110 6110 HOT MACHINE SHOP HOOD SINK HOOD BOOTH DE-CON DWG NX-22280 CHARCOAL FILTER PLANT VENT SYSTEM WG-7-1 WG-7-2 SPOOL PIECE 1" AREA MONITOR SHIPPING & RECEIVING FILTER COILS HEATING OUTSIDE AIR QA III RAD MONITOR R-28 QA III HFD-27 1000 29008611012 ,810 6130 4825 4305 5302 QA III 6700 8 18,940 QA III 20003630 2533358 2000 500 8 EACH HOOD 1300 CFM TO 1850 1500 TO HOOD 1300 CFM CHEM LAB HOT 8 1000 1000 CFM COUNTING RM AREA PENETRATIONS MAIN STEAM FILTER HEATING COILS FC FC OUTSIDE AIR FILTER SEE NF-39605-3 (TYP 4 UNITS) COIL CONTROL VALVE THERMOSTAT TO HEATING OUTSIDE AIR HEATING COILS FILTER OUTSIDE AIR AIR UNITS 21 & 22 AUX. BLDG MAKE-UP UNIT #2 FILTER#21-217-131 COOLING COILS AIR OPER. DAMPER NORM. OPEN AIR OPER. DAMPER NORM. CLOSE FAN COILS SAFE GUARD DUCTED FLOW NON DUCTED FLOW MOTOR OPER. DAMPER NORM. OPEN MOTOR OPER. DAMPER NORM. CLOSE MOTOR OPER. VALVE NORM. OPEN MOTOR OPER. VALVE NORM. CLOSE VOLUME DAMPER FAIL CLOSE FAIL OPEN PARTICULATE FILTER ABSOLUTE FILTER CHARCOAL FILTER CATEGORY I P A C LEGEND REF. DWG ND-113807 500 CFM SUPPLY MD-32304 FAN SUPPLY FAN EXHAUST MD-32305 500 CFM EXHAUST FILTER SUPPLY REGISTER SUPPLY RISER EXHAUST G-WALL EL. 695'-0" COL. 11 & 12 AT K GENERAL AREA EL. 695'-0" AREA GAS STRIPPER R-26 R-27 29026 RE 29041 RE FAN 121 46070 ES TRAIN "B" FAN 122 46078 ESQA III 5000 EL. 695'-0" COL'S G, 11 & 12 GENERAL AREA 29048 RE RE-36& G TO K COL'S 11 TO 15 GEN. AREA 3110 EL. 715'-0" 46508 ES MAKE UP AIR UNIT 121 SPENT FUEL POOL MOD#: DWN: TF 2-26-01 CHK'D: CMR 3-29-01 AS BUILT-CHANGED LOCKER ROOM EXHAUST FAN NUMBER FROM 121 TO 11

PER DRR PI-01-003 FILMED 4-01 AS DWN: VLS 1-24-05 CHK'D: CMR 1-26-05 AS BUILT-PER DRR PI-05-018 FILMED 2-05 AT MOD#: REMOVER 121 FLTR RM EXHT FAN CONTROL SWITCH 46152

DWN: WLI 8-04-06 CHK'D: WJS 8-10-06 AS BUILT-PER DRR PI-06-070 FILMED 9-06 76 MOD#: EC-546 CHNGD U1/U2 AIR INJECTR DSCH LINES REFLCTD IN NF-39230 TO DASHED LINES RMV'D VALVE ID SV-36045 EXHAUST FAN STORAGE ROOM FUEL HANDLING AREA EL. 755'-0" STORAGE RM. VFD-87 VFD-86 HFD-88 HFD-89 SV-37005 34189 CD2935 ROOM SAMPLE LOUNGE OPS DWN: LAB 9-19-07 CHK'D: RWS 9-21-07 AS BUILT-PER DRR PI-07-065 FILMED 10-07 77 MOD#: EC-11529 CORRECTED QA AND ABSVZ BOUNDARIES, DAMPER ID's AND LOCATIONS AS SHOWN.

CONCENTRATES 2NG-36-1 P A C NF-39248 P A P A C P A C#11#121#21 CVCS HOLD-UP TANKS CHEMICAL DRAIN TANK PLANT VENT SYSTEM UNIT # 2#21#11#12#13#22#23 NG-36-1 WASTE HOLD-UP TANK P A C#121 QA III JAN CLOSET TOILET EL. 735'-0" EL. 735'-0" 50 CFM 150 CFM DRYERS LAUNDRY RM TOILET &SHOWER RM HFD-24 HFD-28 1-WG-84""" 1" 1" 2" 2-WG-69 2" SEE WG-35-5 WG-7-3 WG-35-6""" 2-WG-69 2" XH-1-124 36040 CD 36039 CD 57008 36034 CD 36033 CD 36035 CD 36036 CD 34021 CD SV-33417 CONT 34013 CD SV-33409 CONT 34014 CD SV-33410 34019 CD SV-33415 CONT 34018 CD SV-33414 19006 ES CONT FC FC FC FC TE-15786 FAN & FLTR CHEM LAB EXHT 121 FLTR HOT 19003 ES 19004 ES TE-15787 122 FAN 121 FAN 34016 CD SV-33412 FC CONT STACK EXHT SFP FC FANS & FLTRS SMPL RM EXHT 122 FLTR TE-15789 34185 CD SV-37001 FC CONT 34186 CD SV-37002 FC CONT 27099 FE SPR PMPS 11 & 12 CNTMT SPR PMPS 21&22 CNTMT PMP 12 RHR PMP 11 RHR PMP 22 RHR PMP 21 RHR TNK 11 VC TNK 21 VC 34006 CD SV-33402 CONT FC 34007 CD SV-33403 CONT FC 36043 CD 36044 CD TE-15407 CONT CONT TE-15297 HFD-25 GAS STG WST LOW LVL GAS STG WST HIGH LVL TE-15788 36038 CD 36037 CD LCL PNL LCL PNL 01 57007 FI 17604 FT HTR ELEC HTR ELEC 27197 FE TE-15780 TE-15779 17605 FT 34002 CD SV-33398 FC CONT 34003 CD SV-33399 FC CONT 1R-37 FAN 2000 CFM 121 SMPL RM BSTR 36045 CD 36046 CD-01 HFD 34001 CD SV-33397 FC CONT 01 57008 FI CON T COILS HEATING CONT CONT COILS HEATING COORDINATE G-7 SHOP-THIS DWG FROM MACHINE COORDINATE D-4 EL. 695'-0" THIS DWG FROM GENERAL AREA MON NE-39790-3 FROM 1R-11/12 RAD MON FROM 1R-11/12 RAD UNIT #2 GEN EXH FAN 21 AUX BLDG RM EXH FAN 121 FLTR UNIT 1 GEN EXH FAN 11 AUX BLDG (G-6 THIS DWG) VENT SYSTEM 2" FROM PLANT 176-011 & 176-012 276-011 & 276-012 032-171 032-172 VD VD FC FO 032-201 032-021 032-022 ZA-103-7 2ZD-103-2 Z A-103-1 Z A-103-2 ZA-103-4 ZA-103-3 ZA-103-5 ZA-103-6 ZA-103-8 2ZD-103-1 121 FLTR 122 FLTR 069-191 069-192 032-251 232-011 032-221 EXHT FAN 11 LAUNDRY -02 HFD CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT 032-281 EXHT FAN 11 LOCKER ROOM -151 069 069-152 069-182 069-181 121 FLTR 032-162 032-161 032-091 032-092 36016 CD 36015 CD 34048 CD SV-33457 CONT FC 36013 CD 36014 CD CONT CONT CONT CONT FC FC VD CONT FC CONT CONT CONT INTAKE LOUVER MU AIR UNIT 22 AUX BLDG INTAKE LOUVER MU AIR UNIT 21 AUX BLDG AIR UNITS 11 & 12 AUX BLDG MAKE-UP UNIT #1 INTAKE LOUVER MU AIR UNIT 12 AUX BLDG INTAKE LOUVER MU AIR UNIT 11 AUX BLDG OUTSIDE AIR G-7 NF-39248 F-6 NF-39248 B-9 XH-1-405 XH-1001-128 B-10,E-10 C-2 C-4 C-5 FOR CONT. SEE XH-1-40 D-6 SEE NF-39248 E-8 XH-1-664#11, 12 & 13 FOR CONT. SEE NF-39247 G-3 DISCH. HYDRAULIC DESURGERS VENT FROM CHARGING PUMPS E-4 F-4 G-4 X-HIAW. 1-39 UNIT #1 CHG PMPS G-10 SEE NF-39248 CHG PMPS FOR CONT SEE FOR CONT SEE E-4 F-4 G-4 XH-1001-5 DWG NF-39247 G-4

1. 21, 22 & 23. FOR CONT. SEE DISCH. HYDRAULIC DESURGERS VENT FROM CHARGING PUMPS G-9 NF-39248 RHR PIT SUMPS FROM UNIT 2 D-6 NF-39230 DISCHARGE AIR EJECTOR FROM UNIT 1 122 FLTR 069-112 121 FLTR 069-111 NF-39230 D-7 DISCH AIR EJCTR FR UNIT 2 NF-39248 G-3 RHR PIT SUMPS FROM UNIT 1

2. SR/NSR BOUNDARIES CORRESPOND TO QA TYPE I/TYPE III BOUNDARIES.

VD VD SR NSR SR NSR SR NSR SR SR SR NSR SR NSR SR NSR NSR SR NSR SR NSR SR NSR SR NSR SR NSR SR NSR NSR SR NSR SR SR SR NSR NSR NSR NSR SR NSR DWN: JEK 8-21-08 CHK'D: DB 11-9-09 AS BUILT-78 MOD#: EC-13296/EC-13455 ADD ROOT VLVS, SAFETY CLASS FLAGS, MISC EQUIP ID'S, REF CD NOS., MISC 04NS15 PER DRR PI-08-081 APP'D: CMR 11-9-09 GRID COORD'S, LEGEND/NOTE 23214 FT REV FE-23214 TO FT-23214. NSR SR SR NSR NSR SR NE-39790-7 NE-39790-8 CONT 132-011 076-011 032-031 069-141 069-142 NSR SR SR NSR SR NSR NE-39790-9 SEE DWG NE-39790-10 SEE DWG 1R-30 2R-37 2R-30 DWN: JEK 6-30-10 CHK'D: DB 7-7-10 AS BUILT-79 MOD#: EC-15901 ADD SAFETY CLASS FLAGS & DRAWING REF'S TO RAD MONITORS. 04NS15 PER DRR PI-10-112 APP'D: CMR 7-7-10 QA III III III C2 NSR C2 NSR DWN: JEK 8-25-10 CHK'D: DB 9-13-10 AS BUILT-80 MOD#: EC-14788 REV LEGEND TO INCLUDE C2 & QA TYPE. ADD SAFETY CLASS FLAGS AT CHG PMPS. DELETED QA TYPE FLAGS AT PER DRR PI-10-125 APP'D: CMR 9-14-10 LEGEND C2 C2 - SAFETY-RELATED; ISI CLASS 2 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III CHG PMPS & CVCS HUT'S. 04NS15 DWN: DB 3-26-12 CHK'D: RWS 3-28-12 AS BUILT-81 MOD#: EC-19625 CORRECTED DIRECTION OF SPECIAL VENT ZONE SYMBOL @ LOC C-8.

PER DRR PI-12-052 APP'D: CMR 3-28-12 CS 46071 DWN: DB 11-4-13 CHK'D: RLM 11-5-13 AS BUILT-82 MOD#: EC-22443 REV'D SWITCH ES-40671 TO READ CS-46071 @ LOC F-2.

PER DRR PI-13-206 APP'D: CMR 11-5-13 NSR NSR COORDINATE B-8 CONT. SEE THIS DWG PA FILTER, FOR TO FILTER ROOM 0 CFM ISOLATED"85" 0 CFM ISOLATED40 ,6555400 1850 1. EXHAUST FLOW THROUGH EACH TANK IS ~10 CFM. SR12230 34188 CD CONT FC SV-37004 34187 CD CONT FC SV-37003 DWN: LAB 10-31-14 CHK'D: WDG 12-5-14 AS BUILT-83 MOD#: EC-22578 REROUTED EXHAUST GAS FROM THE CVCS MONITORING TANKS FROM THE ABNVS TO 2 ACCORDINGLY. FLOW TO AUX BLDG STACK SFPNVS. REV'D CFM AIR PER DRR PI-14-127 APP'D: CMR 12-9-14 NE-39790 FROM 2R-10 RAD MON RAD MONITOR NE-39790-3 FROM 1R-10 RAD MON DWN: MEA 6-8-16 CHK'D: TLW 10-6-16 AS BUILT-84 MOD#: EC-25498 ADDED REDUNDENT R10 RADIATION MONITORS

PER DRR PI-16-160 APP'D: DB 10-14-16 RECORDS ROOM DWN: JEK 3-1-17 CHK'D: JK 3-7-17 AS BUILT-85 MOD#: EC-27571 CHANGED OSC/RECORDS ROOM TO JUST RECORDS ROOM.

PER DRR PI-17-025 APP'D: DB 3-7-17 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4600 8100 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 85 39600 NF-39600 N F-NSP GENERATION CAD NF-39600.DGN FLOW DIAGRAM AUX BLDG HVAC UNIT 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's.

603000001331 CAD FILE: FIGURE 10.3-8 REV. 35 U10308.DGN 3-2ZE-2 2-2ZE-1 2-2ZE-1 2-2ZE-5 2-2ZE-3 2-2ZE-3 2-2ZE-3 4-2ZE-5 3-ZE-18 2-2ZE-7-2ZE-6-2ZE-7 2-2ZE-6 1-2ZE-7-2ZE-11-2ZE-11-2ZE-10 2-2ZE-2 2-2ZE-3 2-2ZE-2 3-2ZE-1 3-2ZE-3 1-2ZE-4 3-2ZE-5 4-2ZE-3 1-2ZE-3 1-2ZE-11 3-2ZE-10-2ZE-5 2-2ZE-10 31298 CV PI 2-ZE-19-ZE-21 S S-ZE-2-ZE-1 S-ZE-1-ZE-2-ZE-2-ZE-1 2-ZE-2 3-ZE-2 SV-33562 SV-33563 SV-33564 ZE-8-9 ZE-8-8 ZE-8-7 3-ZE-3-ZE-4 2-ZE-4 2-ZE-3-ZE-3-ZE-4 2-ZE-4 1-ZE-3 ZE-8-12 ZE-2-6 ZE-8-11 2-ZE-3-ZE-3ZE-8-61 ZE-2-5 1-ZE-3-ZE-4ZE-8-60 2-ZE-3-ZE-3-ZE-4 2-ZE-4 1-ZE-3 ZE-8-59 ZE-2-4 2-ZE-4-ZE-4 ZE-8-10-ZE-4 CL-46-5 3" SV-33559 SV-33558 SV-33557 SV-33556 3-ZE-3-ZE-5 ZE-8-16 2-ZE-3 1-ZE-5 4-ZE-5 CL-99C-1-ZE-5 ZE-8-15-ZE-5 ZE-8-14-ZE-5 ZE-8-13 2-ZE-3 2-ZE-3 1-ZE-5 3-ZE-5 2-ZE-5 4-ZE-3 2-ZE-3 1-ZE-5-ZE-9 2-ZE-9 ZE-8-32 1-ZE-9 1-ZE-8 V-ZE-9 ZE-8-25 1-ZE-9 V D 1-ZE-8-ZE-8 2-ZE-8 1-ZE-7 V V-ZE-7 ZX-4-16-ZE-6-ZE-8 2-ZE-6 2-ZE-9 ZE-8-27-ZE-9 D-ZE-8 1-ZE-8-ZE-6 1-ZE-9 1-ZE-8 3-ZE-6 3-ZE-7 39437 CV ZX-5-3 D V-ZE-9 2-ZE-9-ZE-9 2-ZE-8 ZE-8-24 1-ZE-9 ZE-3-6 ZE-4-5 2-ZE-9 39425 CV 39439 CV 39441 CV 2-ZE-11 ZE-8-36 ZE-8-35 SV-33555 16966 TS S S ZE-8-38-ZE-11 2-ZE-11-ZE-10 ZE-8-40ZE-2-19 ZE-6-9 1-ZE-11 SV-33554 16961 TS 2-ZE-10 2-ZE-11 2-ZE-10 1-ZE-11 ZE-6-8 ZE-1-8 ZE-8-37-ZE-11-ZE-10 ZE-8-39 1-ZE-10 ZE-2-18 ZE-8-62 2-ZE-10-ZE-11 D-ZE-15-ZE-14 1-ZE-14 1-ZE-15 2-ZE-12 2-ZE-13-ZE-13 2-ZE-14 1-ZE-13 ZE-2-11-ZE-12 4-ZE-13-ZE-14 2-ZE-15 1-ZE-17-ZE-16-ZE-17 CW-17-2 39446 CV 2-2ZE-11 D-2ZE-11-2ZE-10 D 1-2ZE-11 ZE-1-12 ZE-1-11-2ZE-10 16962 TS 39429 CV 39432 CV 39431 CV 39427 CV 39428 CV 39443 CV 2-2ZE-10 39433 CV V V 31296 CV ZE-3-4 1-ZE-16 1-2ZE-6 39435 CV 2-2ZE-1-ZE-9 2-ZE-7-ZE-7 D CW-17-4 CONT CONT CONT 2-2ZE-4 2CL-17-15 1-ZE-15 2-ZE-15-ZE-15 2-ZE-13 2-ZE-12-ZE-12 1-ZE-13 1-ZE-14 CONT 2-ZE-2 2-ZE-1 2-ZE-2 2-ZE-1 2-ZE-1 2-ZE-2 1-ZE-2 ZE-8-18-ZE-3-ZE-3-ZE-3-ZE-3 1-ZE-5 2-ZE-14 2-ZE-15 2-ZE-13 1-ZE-12 2-ZE-12 2-ZE-13-ZE-13 2-2ZE-11 2-2ZE-10 2-2ZE-10 CONT CONT CONT CONT CONT CONT CONT CONT CONT-2ZE-4 1-ZE-2 1-ZE-2 2-ZE-2 1-ZE-4 1-ZE-4 2-ZE-3 2-ZE-5 2-ZE-5 2-ZE-5 2-ZE-5 2-ZE-5 1-ZE-12 2-2ZE-5 3-2ZE-3 3-ZE-19 2-2ZE-1 2-2ZE-3 2-2ZE-3 1-2ZE-4 3-2ZE-4 1-ZE-9-ZE-8 2-ZE-8 1-ZE-6 2-ZE-11 1" S SV-33553 1-ZE-11-ZE-10-ZE-11 2-ZE-11-ZE-8 1-ZE-6-2ZE-11 2-2ZE-10 2-2ZE-11 1-2ZE-6 1-ZE-16-ZE-17 1-2ZE-6 1-ZE-7 2ZE-8-32 2ZE-2-15 2ZE-8-34 2ZE-4-11 2ZE-4-8 2ZE-4-7 2ZE-8-26 2ZE-8-27 2-2ZE-11 2ZE-8-40 1-2ZE-10 1-2ZE-11 2ZE-6-9 2ZE-8-39 2ZE-8-38 WL-98-1 2WL-98-1 WL-98-3 2WL-98-3 WL-98-5 2WL-98-5 WL-98-2 2WL-98-2 WL-98-6 2WL-98-6 WL-98-4 2WL-98-4 2ZE-8-62 2ZE-2-18 2ZE-8-36 2ZE-1-8 2ZE-6-8 2ZE-8-35 2ZE-8-37 2ZE-4-5 2ZE-3-6 2ZE-8-24 2ZE-8-22 2CL-99B-4 2ZX-5-7 2ZE-8-25 ZE-4-14 2CL-99C-2 2ZE-8-16 2ZE-6-7 2ZE-1-7 2ZE-8-20 2ZE-6-6 2ZE-1-6 2ZE-8-19 2ZE-6-5 2ZE-8-15 2ZE-8-14 2ZE-1-5 2ZE-8-18 2ZE-6-4 2ZE-8-13 2ZE-1-4 2ZE-8-17 ZE-9-1 2CL-99C-1 ZE-12-2 2ZE-2-4 2ZE-8-10 2ZE-8-59 2ZE-2-5 2ZE-8-11 2ZE-8-8 2ZE-8-7 2ZE-2-6 2ZE-8-12 2ZE-8-9 2ZE-8-61 2CL-46-5 2ZE-8-60 ZE-14-1 ZE-13-1 ZE-14-2 ZE-13-2 PI ZE-10-2 ZE-12-3 ZE-10-1 2ZE-15-2 2CL-46-4 2ZE-1-3 2ZE-8-6 2ZE-6-3 2ZE-8-3 2ZE-6-2 2ZE-8-2 2ZE-8-5 2ZE-1-2 2ZE-6-1 2ZE-8-1 2ZE-8-4 2ZE-1-1 2CL-46-3 2ZE-15-1 ZE-12-4 ZE-11-2 ZE-11-1 ZE-8-53 ZE-8-52 ZE-8-56ZE-5-14ZE-2-24 ZE-2-23 ZE-5-15 ZE-2-26 2CL-99B-2 2ZE-3-3 2ZE-8-48 2ZE-8-50 ZE-2-12 ZE-5-11 ZE-8-46 2ZE-2-11 2ZE-5-11 2ZE-2-12 2ZE-8-45 2ZE-8-46 ZE-8-47 2ZE-4-14 2ZE-4-15 2ZE-8-49 2ZE-8-47 2CL-99B-3 CL-99B-3 CW-17-3 CL-17-16 CL-99B-4 ZE-6-4ZE-1-4ZE-1-5ZE-1-6ZE-1-7 ZE-8-30 ZE-4-8 ZE-4-6 ZE-4-7 ZE-8-17 ZE-2-16 ZE-8-19 1" 1" 3-ZE-1 ZE-8-20 1-ZE-11-ZE-8 F-2ZE-11 1-2ZE-11 1-2ZE-10 CLRS UNIT BLDG SMP TURB 39444 CV S S S S S S ZE-6-6 ZE-6-5 ZE-6-7 ZE-8-3 ZE-6-3 ZE-8-2 ZE-6-2 ZE-8-1 ZE-8-4ZE-1-1 ZE-8-5ZE-1-2 ZE-6-1 ZE-8-6ZE-1-3 CL-46-3 CL-46-4 SV-33569 SV-33568 SV-33567 S CL-17-15 1" 1" S V S V S SV-33586 2ZE-2-19 SV-33683 SV-33585 3-ZE-19 S S S S S S 2-ZE-18-ZE-18-ZE-19 2-ZE-18-ZE-18 2-2ZE-5-2ZE-3 2-2ZE-5-2ZE-5-2ZE-5 2-2ZE-5 1-2ZE-5 1-2ZE-5 2-2ZE-5-2ZE-5 2-2ZE-3 2-2ZE-5-2ZE-4 2-2ZE-4-2ZE-4 2-2ZE-4 SV-33575 SV-33576 SV-33577-2ZE-3-2ZE-3-2ZE-3 2-2ZE-4-2ZE-4 CONT SV-33571-2ZE-2 2-2ZE-2 CONT SV-33572 CONT SV-33573-2ZE-2 2-2ZE-2-2ZE-2-2ZE-1-2ZE-1 2-2ZE-2-2ZE-1 ZE-8-22 ZE-8-45 ZE-8-55 1-ZE-7 ZE-8-49-ZE-7 1-2ZE-7 1-ZE-6-ZE-6 1-2ZE-6 1-ZE-7 1-ZE-6 1-2ZE-6 1-2ZE-7-2ZE-7-2ZE-6 1-2ZE-7 2ZE-3-4 1-ZE-7-ZE-7-ZE-6 1-ZE-6 1-ZE-7 1-ZE-6-ZE-7-2ZE-7 2-ZE-8 ZE-2-15 2-2ZE-9 2-2ZE-7 1-2ZE-7 1-2ZE-7 3-2ZE-7 3-2ZE-6 1-2ZE-6 2ZE-2-16-2ZE-7 2-2ZE-7 2-2ZE-6-2ZE-6 1-2ZE-6-2ZE-7-2ZE-6-2ZE-7 1-2ZE-7-2ZE-6 2ZE-8-30 2ZE-4-10 2-2ZE-6-2ZE-9-2ZE-9 2ZE-4-9-2ZE-9 1-2ZE-8 1-2ZE-9-2ZE-7-2ZE-7-2ZE-8-2ZE-8 2ZE-8-29 1-2ZE-7-2ZE-6-2ZE-6 2ZE-4-6 2ZE-8-28 ZE-1-9 1-ZE-9 CL-16-2 ZE-8-28 ZE-12-1-ZE-19 2-2ZE-2-2ZE-7 ZE-8-29 ZE-8-34 ZE-4-9 ZE-4-11 ZE-4-10 2-2ZE-5 274-081 274-082 274-083 174-082 174-081 174-091 174-092 174-093 174-101 174-102 174-103 174-111 174-112 274-111 274-112 174-142 174-133 174-132 174-131 174-152 074-012 074-013 274-051 174-051 174-061 174-062 274-061 274-062 274-121 274-142 274-131 274-132 274-133 274-152 274-104 274-103 274-102 274-101 274-093 274-092 274-091 174-083 174-104 D D V V D D D D D D D D D D V V V V V V V V V V D D D D D D V V V V V V V V V V V V V V V V V V V V V V V V D V D D D D D D D D D D D D D D D D D D D D D 2-ZE-10 D V ZE-8-48 ZE-8-50 074-242 074-241 ORIF PLATE INSTALLED AT UNIT CLR OUTL FLG 16965 TS CONT CC PMP MTR UNIT CLRS (III/3) CW-17-1 2CL-16-2 DET. 1 DET. 1 A-2 NF-39217-1 CL RTRN LOOP B -2ZE-7 LOOP B UC 22 LOOP A UC 22 LOOP B UC 23 LOOP B UC 21-2ZE-7 ZE-4-15-ZE-7 ZE-3-3 3-2ZE-11 2-2ZE-11 DET. 1 DET. 1 DET. 1 3-ZE-10 3-ZE-11 1" 2-ZE-10 ZE-8-26-ZE-9 1-ZE-10 1-ZE-8 CL-99C-2 ZE-2-25 2-ZE-14 D-ZE-18-ZE-18-2ZE-3-2ZE-3 1-2ZE-3 1-2ZE-3-2ZE-4-2ZE-4 1-2ZE-5 1-2ZE-5 LOOP B UC 22 LOOP B UC 22 LOOP B UC 21 2045 (U2)2060 (U1)G-LINE PENETS LOOP B UC 22B LOOP B UC 22A LOOP B UC 21B LOOP B UC 21A LOOP B UC 21 LOOP B UC 22 LOOP B UC 23 LOOP B UC 23 1-2ZE-2 1-2ZE-2 1-2ZE-2 LOOP A UC 11 2CL-17-16 LOOP B UC 21 LOOP B UC 22 D-12 1-ZX-106 NF-86172-4 2-ZE-1 2-ZE-2 LOOP A UC 21 LOOP B UC 12 4-ZE-15 LOOP B UC 22 LOOP A UC 21 1-2ZE-6 LOOP B UC 21 LOOP A UC 12 LOOP A UC 11 LOOP B UC 12 LOOP B UC 12 LOOP B UC 11 LOOP A UC 12 LOOP B UC 13 LOOP A UC 11A LOOP A UC 11B LOOP A UC 12A LOOP A UC 12B LOOP A UC 13 LOOP A UC 12 LOOP A UC 11 LOOP A UC 13 LOOP A UC 12 LOOP A UC 11 LOOP B UC 12 LOOP A UC 11 LOOP B UC 22 (III/NSR)CDSR REFRIG 122 (III/NSR)CDSR REFRIG 121 1-2ZE-7 39442 CV H-5-2ZE-3 2-ZE-15 CL-99B-2 F-5 3-2ZX-14 NF-86172-3 3-2ZX-100 NF-86172-3 F-7 2-2ZX-19 NF-86172-3 H-4 2-2ZX-124 NF-86172-3 2ZX-4-14 H-7 3-ZX-129 NF-86172-3 E-6 2-2ZX-20 NF-86172-3 MS CORR UNIT CLRS (III/3) AUX BLDG FAN UNIT CLRS (III/3) AUX BLDG FAN UNIT CLRS (III/3) U1/U2 AUX BLDG UNIT CLRS COND DISCH SYS MS CORR UNIT CLR (III/3) CHG PMP MTR UNIT CLRS (III/3) FW PMP MTR UNIT CLRS (III/3) HTR DRN TK PMP MTR UNIT CLRS (III/3) COND PMP MTR UNIT CLRS (III/3) COND PMP MTR UNIT CLRS (III/3) HTR DRN TK PMP MTR UNIT CLRS (III/3) FW PMP MTR UNIT CLRS (III/3) CHG PMP MTR UNIT CLRS (III/3) SI PMP UNIT CLRS (III/3) 2-2ZE-8 DETAIL 1 PUMP BUCKET COND G-6 NF-39217-1 D-11 NF-39217-1 A-10 NF-39217-1 G-6 NF-39217-1 B-2 NF-39217-1 A-6 NF-39216-2 G-1 NF-39216-2 B-5 NF-39216-2 C-8 NF-39217-2 C-8 NF-39217-2 G-4 NF-39216-3 E-7 NF-39216-3 G-8 NF-39216-3 C-7 NF-39216-2 E-7 NF-39217-1 E-4 3-2ZX-15 NF-86172-3 B-3 2-2ZX-26 NF-86172-4 E-8 3-ZX-17 NF-86172-3 D-11 1-ZX-41 NF-86172-4 H-6 NF-39216-3 D-7 NF-39217-2 D-7 NF-39216-3 E-7 NF-39216-3 G-8 NF-39216-3 B-7 2-ZX-122 NF-86172-4 3-ZX-18 F-9 NF-86172-3 H-8 NF-39216-2 H-3 NF-39216-2 D-12 NF-39216-2 H-6 3-2ZX-126 NF-86172-3 B-3 2-2ZX-98 NF-86172-4 D-8 NF-39217-2 B-8 NF-39217-2 B-5 1-2ZX-37 NF-86172-4 B-5 1-2ZX-86 NF-86172-4 B-7 2-ZX-52 NF-86172-4 H-9 2-ZX-125 NF-86172-3 H-8 3-ZX-79 NF-86172-3 ZE-1-10 2-ZE-19-ZE-20 MAIN STEAM CORRIDOR UNIT CLR REMOVED FROM PLANT BUT PIPING RESERVED FOR FUTURE REPLACEMENT WITH NEW UNIT CLR SI PMP UNIT CLR (III/3) CNTMT SPR PMP UNIT CLR (III/3) CNTMT SPR PMP UNIT CLR (III/3) 2-2ZE-8 C3 C3 NSR C3 NSR C3 NSR C3 NSR C3 NSR C3 NSR C3 C3 NSR C3 NSR C3 NSR C3 NSR NOTES: MANUAL C PROCEDURE CHECKLIST.

1. FOR VALVE POSITIONS SEE OPS

2. DENOTES CATEGORY I 4.VENTILATION ZONE DESIGN CLASS.

I/1 DENOTES EQUIPMENT QA TYPE/ C3 NSR CLASS BOUNDARY C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED NF-39214.

3. FOR SYMBOLS SEE XH-1-105, NON-CODE CLASS SR - SAFETY-RELATED FLUID BOUNDARY; NF-39217-1,2 - CL SYS FLOW DIA. UNIT 2 NF-39216-2,3 - CL SYS FLOW DIA. UNIT 1 NF-86172-3,4 - ZX SYS FLOW DIA. UNIT 1&2 REFERENCE DWGS IC III QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES.

DWN: DB 10-14-10 CHK'D: JEK 11-24-10 AS BUILT-80 MOD#: EC-17064 REV'D NOTES, LEGEND, SAFETY CLASS FLAGS. ADDING QA DESIGNATIONS AND QA FLAGS 04NS15 PER DRR PI-10-182 APP'D: CMR 11-29-10 CONSTRUCTION ISSUED FOR DELETE SI-11/21, CS-11/21 PMPS, SV, CONSTANT FLOW VLVS ON U1/2 CC, SI, CS & CC PMPS. ADDED CAPS. A.V. SETLUR 7-16-09 PE# 21678 MOD#: EC-10348 81 REVIEWED: SP 7-16-09 AS BUILT-MOD#: EC-14585 DWN: JEK 7-17-12 CHK'D: TLL 8-28-12 DWN: DB 1-9-09 CHK'D: JD 7-7-09 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 81 , DRR PI-12-139 REV. 81 PER INCORPORATED A/E's PE CERT: APP'D: CMR 8-28-12 APP'D: AVS 7-16-09 III III III III IC IC IC IC III IC III IC III IC III IC III IC III IC IC IC IC III IIB III IIB IIB III IIB III IIB IC IC IIB IIB III III IIB III IIB III IIB IIB III IIB III DWN: MEA 11-30-15 CHK'D: AT 11-30-15 AS BUILT-82 MOD#: EC-23783 VALVE IDENT. 2ZE-8-18 CHANGED TO 2ZE-2-18.

PER DRR PI-15-189 APP'D: KJW 12-1-15

1-ZE-15 C3 C3 IC 16963 TS 17664 TS 27324 FE 1-ZE-13 27323 FE 17662 TS C3 NSR 1-ZE-13 27325 FE 17665 TS 1-ZE-15 27322 FE NSR C3 17661 TS AFW PUMP ROOM CLRS (I/1) CONT.CONT.CONT.CONT.NOTE 5 NOTE 5 NOTE 5 NOTE 5 5.INSTALLED WITH FLOW ELEMENT. STAINLESS STEEL PIPE SPOOL "83" CONSTRUCTION ISSUED FOR REV'D PIPING & CLRS FOR AFW PUMP ROOM ADDED NOTE 5

PE# MOD#: EC-26419 83 REVIEWED: WLS 12-9-16 AS BUILT-MOD#: EC-26419 DWN: MEA 6-20-17 CHK'D: JDT 7-25-17 DWN: BGC 12-9-16 CHK'D: JDT 12-9-16 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 83 , DRR PI-17-112 REV. 83 PER INCORPORATED A/E's PE CERT: APP'D: DB 7-26-17 APP'D: TP 12-12-16 "83" REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 2-28-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 1300 8131 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 83 39603-2 NF-39603-2 N F-NSP GENERATION CAD NF-39603-2.DGN FLOW DIAGRAM EQUIPMENT HEAT REMOVAL SYSTEM UNIT 1 & UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. LEGEND 603000001331 CAD FILE: FIGURE 10.3-9 REV. 35 U10309.DGN 1-ZH-67 3-ZW-2 4-ZW-2-" ZW-8-3 ZW-13-2////ZW-6-1 31780 CV 1-ZW-6 ZW-5-1 4-ZW-21 ZW-7-5 ZW-12-1 1-Z W-24//2-Z W-22 ZB-1-2 ZB-3-1 2-ZW-5 ZW-13-3 ZW-15-1 2-ZW-66 3-ZW-4 ZW-7-21 ZW-16-1 1-ZW-81 ZB-2-1 ZB-1-1 2-Z W-5 31783 CV 2-ZW-22 1-ZW-6 3-Z W-4////ZW-6-7 ZW-11-4////ZW-7-8 ZW-6-6 31773 CV ZW-6-5 ZW-6-4//////1-ZW-26 ZW-10-1 ZW-5-3 1-ZW-26 1-ZW-7 1-ZW-27 31772 CV ZW-5-2 ZW-7-11 ZW-11-6 ZW-6-9//////31775 CV ZW-7-10 ZW-6-11 ZW-11-5 ZW-7-9 ZW-6-8 ZW-6-10 31777 CV//////31782 CV 2ZW-7-1 2ZW-9-1 2ZW-3-1 2-ZW-42 1-ZW-74 2-ZW-43 2ZW-4-1 ZW-3-5 2-ZW-42//////ZW-10-2 ZW-5-5 1-ZW-38 1-ZW-39 1-ZW-10 ZW-5-4 ZW-7-13//ZW-11-7 ZW-6-12 1-ZW-40 1-ZW-10 1-ZW-41 2-Z W-48 31779 CV ZW-7-12 ZW-5-6 1-Z W-11 ZW-17-1////ZW-6-14 ZW-3-4 2-ZW-12 31770 CV ZW-7-2 ZW-6-13////ZW-6-16 31771 CV ZW-6-15 ZW-7-14 3-Z W-21 3-Z W-4 2-ZW-21 2-ZW-4 2-Z W-48 ZW-9-1 ZW-3-1////2-ZW-49 1-ZW-79 ZW-4-1 31781 CV"" 31641 CV-ZW-86-ZW-88 ZW-6-18 ZW-11-11-Z W-87 ZW-6-17" 2-ZW-21 DETAIL "A" 31778 CV 2-ZW-4 V 31785 CV CL-16-11 C L-16-12 CL-16-10 CL-76-4 CL-20-44 LABORATORY AND SERVICE AREA AIR CONDITIONING SYSTEM 1-ZW-15 1-Z W-4 1-ZW-48 1-ZW-15 1-ZW-49-ZW-47-ZW-14-ZW-78-ZW-14-Z W-46-ZW-46-Z W-14-ZW-14-ZW-13-ZW-13-Z W-13-ZW-45-ZW-77-ZW-44-ZW-44-ZW-13 1-Z W-12-ZW-12 1-Z W-12-ZW-75-ZW-10-ZW-40-ZW-76-ZW-11-ZW-41-ZW-11 2-Z W-21 2-Z W-4 D-ZW-15 ZW-7-1 1-ZW-48-ZH-27 1-ZH-98 CONDENSER 1-ZH-84 ZH-4-10 1-ZH-64 1-ZH-69 ZH-4-9 1-Z H-82 1-ZH-21 ZH-4-12 ZH-4-11 1-ZH-82 1-ZH-21 1-ZH-4 2ZH-4-11 1-Z H-9 1-ZH-23 2ZH-4-12 ZH-4-7 1-ZH-35 1-ZH-98 2ZH-4-8 2ZH-9-4 1-ZH-37 1-ZH-100 ZH-4-20 ZH-9-10 ZH-4-19 ZH-4-16 ZH-9-8 ZH-4-17 ZH-9-9 1-ZH-31 1-ZH-92 ZH-4-18 ZH-6-9 1-ZH-13 ZH-6-11 TRAIN B 1-ZH-94 1-ZH-73 1-ZH-94-ZH-73 1-Z H-73 1-ZH-95 1" 1-ZH-72-ZH-96 2-ZH-97-ZH-72-Z H-72-ZH-97 2-ZH-72 2" ZH-22-1 ZH-17-1 ZH-8-1 ZH-3-1 1-ZH-88 1-ZH-127 ZH-3-2 4-ZH-82-ZH-102 CL-23-1 ZH-6-12 ZH-11-1 ZH-2-1 ZH-1-1 CL-16-4 Z H-1-2 ZH-1-3 CL-16-3 C L-22-5" ZH-16-1 ZH-23-1 ZH-11-3 -ZH-113 1-ZH-63 -ZH-62 CL-20-49 CL-76-3 CL-20-43 CL-16-5 3-ZH-62-ZH-110 ZH-11-4 ZH-2-2 ZH-1-4 Z H-1-5 ZH-17-2 ZH-3-3 ZH-3-4 C L-23-2 ZH-6-15 CL-16-9 2" CL-20-47 CL-22-6 Z H-16-2 Z H-23-2 ZH-11-6 3-Z H-47-ZH-1 -Z H-2 3-ZH-2 1-ZH-3 4-Z H-4-ZH-19 2-ZH-23 2ZH-4-3 2ZH-9-2 TRAIN B 2ZH-6-2-ZH-10 1" 1-ZH-10 1-ZH-28 1-ZH-10 1-ZH-28 1-ZH-27 1-ZH-27-Z H-4 ZH-6-32 ZH-6-25 ZH-4-4 ZH-9-2 ZH-4-3-ZH-6 ZH-6-39 2ZH-4-1 2ZH-4-2 ZH-6-40 1-Z H-13 1-ZH-32 1-ZH-31 1-ZH-7 1-ZH-31-ZH-74 1-ZH-74 1-Z H-74 1-ZH-93 1-ZH-93 1-ZH-92 1-ZH-92 1-Z H-7 2-ZH-7 3-Z H-4 1-ZH-33 1-ZH-34 1-Z H-12-ZH-12 1-ZH-33 1-ZH-34 4-Z H-1 2-ZH-5 2-ZH-26-ZH-4 1-ZH-29 1-ZH-6-ZH-29-ZH-6 1-ZH-6 1-ZH-6 1-ZH-9 1-ZH-23 1-ZH-33 2-ZH-31-ZH-13 2-ZH-194 2-ZH-35 1-ZH-35 1-ZH-15 1-ZH-8 1-ZH-98 2-ZH-8 1-ZH-35 1-ZH-68 2-ZH-98 2-ZH-68 1-ZH-68 1-ZH-100 1-ZH-101 2-ZH-67 1-Z H-96 1-ZH-84 1-Z H-69 1-ZH-32 1-ZH-12 2-ZH-84 2-ZH-86 4-ZH-64 2-ZH-87-ZH-62-ZH-64 2-ZH-110-ZH-79 4-ZH-79 4-ZH-61 -ZH-81 4-ZH-102 2-ZH-47" -ZH-18 4-ZH-2 4-ZH-39 2-ZH-25 2ZH-4-9 2ZH-4-7 ZH-4-1 ZH-4-2 3-ZH-4 CL-99B-7 2ZH-4-4 ZH-22-2 2ZH-9-1 1-ZH-29* ZH-6-34 ZH-14-2 -ZH-48-ZH-48 ZH-7-4-ZH-49-ZH-80 ZH-14-1 ZH-11-2 ZH-6-33 ZH-7-3-ZH-111-ZH-111-ZH-112 2ZH-6-1 1" 1-ZH-71 1-Z H-71 1-ZH-91 -ZH-71 1-ZH-90 1-ZH-91 1" 1-ZH-11 1-Z H-11 -ZH-11 1-ZH-29 1-ZH-30 1-ZH-30-Z H-70 ZH-6-2 ZH-6-1 ZH-9-1 ZH-4-24 Z H-4-23-ZH-127 ZH-6-41 1-ZH-129 1-ZH-128 1-ZH-129 2ZH-6-4 1-ZH-38 1-Z H-14-ZH-14 1-ZH-38 1-ZH-14-ZH-76 1-ZH-76 1-ZH-99 1-ZH-98 1-ZH-99 1-Z H-76-ZH-15 1-ZH-15 1-ZH-36 1-Z H-15-ZH-75 1-ZH-75 1-Z H-75 1-ZH-101 2ZH-9-6 2ZH-6-6 TRAIN B-ZH-16-ZH-23" 2ZH-9-5 TRAIN A 2ZH-6-5-ZH-78 1-ZH-78 1-ZH-83"-ZH-82 TRAIN B-ZH-17 1-ZH-17 1-ZH-22-ZH-21 ZH-6-6 ZH-9-6 TRAIN A-ZH-77 1-ZH-77 1-ZH-85-ZH-84 ZH-6-5 ZH-9-5 1-Z W-63 Z W-19-1 CL-16-7 CL-9-1 CL-99E-1 CL-99G-1 ZW-8-1 ZW-2-1 ZW-7-18 ZW-1-2 4" 4-ZW-20*ZW-11-1 ZW-1-1 4-Z W-1 4-ZW-19 ZW-13-1 ZW-18-1 3-ZW-57*CL-99C-4 CL-20-45 4" CONDENSER COOLER CL-22-10 ZW-8-2 ZW-7-3 4-ZW-2 3-ZW-2 2"" X X X 4-ZW-4 ZW-11-2 ZW-6-3 3-ZW-21 1-ZW-29 ZW-6-2 ZW-7-6 2-ZW-7 1-ZW-26 AUX BLDG SRVC AREAS UNIT COOLERS -ZW-71-ZW-7 1-ZW-27 1-ZW-26 1"-ZW-34-ZW-34-Z W-8-ZW-8-ZW-34-ZW-35-ZW-35-ZW-8-ZW-72//////-ZW-73-ZW-9-ZW-9 1-Z W-3-Z W-9-ZW-37-ZW-36-ZW-36-ZW-37-ZW-36-ZW-7-ZW-70-ZW-16-ZW-7-ZW-16-ZW-29-ZW-16-ZW-28-ZW-28-ZW-32-ZW-32-Z W-18-ZW-18-ZW-7-ZW-18-ZW-68-Z W-30 1-ZW-7-ZW-33-ZW-24-ZW-6-Z W-6-ZW-25-ZW-67 ZW-7-19 2-ZW-23-Z W-50-ZW-80-ZW-65-ZW-65-ZW-5-ZW-4 D V VALVE RLF 2-Z W-5-ZW-4-ZW-3 CL-20-41-" SV-33718 V S-ZW-2-ZW-2 X X-ZW-3-ZW-61-ZW-62-ZW-59-ZW-50-ZW-19-ZW-60-ZW-1 2-ZW-57 CL-99C-3 ZW-7-4 D D D D D D D (TYP) FLEX CONN CL-99F-5-ZW-58 CL-99F-6 V V V (TYP)" VENT D D D-ZW-64 D-Z W-56 D V 4-ZH-4 CONDENSER Z H-7-6 TEST CONN D D"-ZH-47 CL-16-8 D CL-99B-8 D 4-ZH-18 D 1-Z H-51 Z H-19-2 D D" D V-ZH-50 V D ZH-18-1 PUMP OIL D D" D D V V 4-ZH-79 31838 CV D" CL-20-46 D-ZH-2 D V ZH-24-1 ZH-24-2"" 31786 CV" 1-ZH-84"" D D 1-ZH-83 2ZH-4-10 4-Z H-82 1-ZH-16 1-ZH-24 1-ZH-24 V ZH-7-5 ZH-7-1 ZH-6-13 V ZH-6-16 TRAIN A D D 2ZH-4-6 2ZH-9-3 2ZH-4-5 1" 2ZH-6-3 TRAIN B D 1-ZH-39 1-Z H-39 1" TRAIN B D 1" ZH-6-4 ZH-4-8 ZH-9-4 1-ZH-8 ZH-4-5 TRAIN A D 1" ZH-6-3 ZH-4-6 ZH-9-3 C H ILLE D W T R S UPP L Y HD R C H ILLE D W T R RET U R N HD R CHILLED WTR SUPPLY HDR CHILLED WTR RETURN HDR 3-Z H-21 D TRAIN A 1" D ZH-6-10 ZH-4-15 1" D 1-ZH-67 TRAIN B ZH-4-14 ZH-9-7 TRAIN A 1" ZH-4-13 1-ZH-95 ZH-6-8 D ZH-6-7 " TRAIN A D ZH-5-2 ZH-10-1 ZH-5-1 2-ZH-92 3-Z H-82 D V V V TRAIN B D V TRAIN A TRAIN B 31766 CV 31788 CV TRAIN A 31767 CV D 31837 CV 2-ZH-23 1" D 1-ZH-128 1-ZH-89 D -" ZH-173-2 Z H-173-3 4-ZH-20 ZH-173-1 ZH-19-1 1-Z H-114-" Z H-6-23 3-Z H-64 3-Z H-64 ZH-8-2 ZH-6-31 ZH-1-8 ZH-18-2 " D-ZH-19122121 " D ZH-6-26 ZH-1-9 4-ZH-21-ZH-20 12354 TI Z H-6-24 4-ZH-81 27051 FE 18451 FI-ZH-104 D 3-ZH-110 ZH-6-17 (TYP 2)TANK EXPN ZH-6-20 CHG VALVE (TYP 2) -ZH-41 1-ZH-89 053-382 053-381 1-Z H-42 1-Z H-105 2-ZH-6 1-Z H-6 4-ZH-21 2-ZH-6 3-Z H-4 049-031 049-032" 4-ZH-62 V-" COLD CHEM LAB UC 121 ACCESS CONT UC 128 ACCESS CONT UC 126 SAMPLE RM UC 121 ROD DRIVE RM UC 21 LAB HOT CHEM UC 121 COUNT RM UC 121 OPER STUDY RM UC 121 OPER LOUNGE UC 121*AUX BLDG SRVC AREAS UNIT COOLERS FLOOR ELEV 715'-0" (III/3) FLOOR ELEV 715'-0" (III/3) AUX BLDG SWITCHGEAR UNIT COOLERS FLOOR EL 735'-0" (I/1) AUX BLDG RELAY ROOM & COMPUTER ROOM UNIT COOLERS FLOOR EL 715'-0" (I/1) TURBINE BLDG SWITCHGEAR UNIT COOLERS FLOOR EL 715'-10" (I/1) AUX BLDG RHR PIT UNIT COOLERS FLOOR EL 665'-0" (I/1) " 1" H-8 NF-39216-3 (LOOP A)24" CLG WTR RTN HDR 1" C-7 NF-39217-2 (LOOP B) 24" CLG WTR SPLY HDR D 1" CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT CONT AUX BLDG CHEM LAB & ROD DRIVE CONT RM UNIT COOLERS ELEV 735'-0" (III/3) CONT CONT CONT CONT 2-Z H-66 CL-118-12 045-592 (TRAIN B) CHLD WTR PUMP 122 CONT RM 174-163 EAST MONITOR RM EVENT UC 274-161 BUS SWGR RM UC 122 274-162 MONITOR RM EVENT UC 074-031 (LOOP A)RELAY RM UC 121-N 074-034 (LOOP B)RELAY RM UC 122-N 074-033 (LOOP B)RELAY RM UC 122-S 074-032 (LOOP A)RELAY RM UC 121-S ACCESS CONT UC 125 ACCESS CONT UC 127 UNIT COOLERS FLOOR ELEV 695'-0" (III/3) TURB RM COLD CHEM LAB NF-39603-4 SUPPLY DEMIN WTR 1" CHILLED WTR RTN NF-30603-4 FLOOR ELEV 750'6" (III/3) ADMIN BLDG A/C UNIT (III/3) FEEDER CHEM SRVC AREA LAB & AREA CHILLER 121 LAB & SRVC NF-39603-4 SUPPLY DEMIN WTR AUX BLDG SRVC AREA & CHEM LAB UNIT COOLERS FLOOR ELEV 715"-0" (III/3) 274-042 (LOOP B)RHR PIT UC 22 274-041 (LOOP A)RHR PIT UC 21 174-042 (LOOP B)RHR PIT UC 12 FLOOR EL 755'-0" (I/1) A/C & CHILLED WTR 121 & 122 AUX BLDG CONT RM FLR DRN 31768 CV 26361 TC 31764 CV NF-39603-4 075-012 WTR CHILLER CONT RM 122 174-162 WEST MONITOR RM EVENT UC 4-ZH-1 26037 PC 4-Z H-61 26038 PC 075-011 WTR CHILLER CONT RM 121 045-591 (TRAIN A) CHILL WTR PMP 121 CONT RM (III/3) CHEM FEEDER 121 CONT RM PUMP OIL FL DRN TO F-6 NF-39216-3 SPLY HDR (LOOP A) 24" CLG WTR 2-ZH-65 1-Z H-29 31759 CV 31760 CV 31761 CV 31762 CV 31763 CV 31755 CV 31756 CV 31757 CV (TYP)DRN TO WST 31758 CV-ZW-46 (TYP)DRN TO WST 1-ZW-42 1-ZW-10 1-ZW-38 1-ZW-11 1-Z W-7-ZW-8-ZW-9-ZW-16 D 31776 CV-ZW-18 (TYP)DRN TO WST 2-ZW-22 (TYP)DRN TO WST 2-ZW-5 PUMP OIL TO WST" DRN B-6 NF-39216-2 SPLY HDR 24" CLG WTR 17408 TT 17409 TT 16889 FS NF-39603-4 SPLY HDR 1" CHLD WTR 11655 PI (III/3)WTR PMP AREA CHLD LAB & SERV & STRNR AIR SEP GLASS GAGE 11663 PI VLV CHG EXPN TNK D 17410 TT 16890 FS 31784 CV 26039 PC CL-99C-5 D 4-ZW-2 19144 CS 19145 CS 19146 CS 19339 CS 19147 CS 19125 CS 19128 CS 19126 CS 19129 CS 19130 CS 19148 CS 19149 CS 19150 CS 19151 CS 19152 CS 19153 CS 19154 CS 19155 CS ES 19138 ES 19141 ES 19142 ES 19143 DWN: DB 5-5-10 CHK'D: JEK 5-11-10 AS BUILT-APP'D: CMR 5-12-10 76 MOD#: EC-14552 UPDATE WITH STANDARD BORDER FOR CONSISTENCY WITH DRAWING CONTINUATION COORDINATES PER DRR PI-10-048 11722 PI Z H-173-5 11723 PI ZH-173-6 NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C3 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IC NSR III 17404 TI 17402 TI 17403 TI 17405 TI 17401 TI 17400 TI 17406 TI 17407 TI 2-ZH-25 C-2 NF-39603-4 CHLD WTR 11654 PI 11657 PI ZH-173-4 11662 PI-ZH-125-Z H-125 1-ZH-125 -ZH-126 1-ZH-126 -Z H-126--Z H-20 1-Z H-127 3-ZH-64 2-ZH-84 1-ZH-66 174-161 SWGR RM BUS UC 112 1-ZH-90 1-Z H-90 2-ZH-5 2-ZH-5 B-4 NF-39603-4 CHLD WTR B-4 NF-39603-4 CHLD WTR III IC C3 NSR (TYP)FLEX CONN Z H-11-5 (III/3) CHEM FEEDER 122 CONT RM NSR C3 III IC NSR C3 III IC C3 NSR III IC 1" E-1 C-8 1" C3 NSR III IC NSR C3 III IC B-3 B-5 NF-39603-4 UNIT PROT SYS NF-39603-4 CLG WTR TO VENTILATION FLTR 2" A-7 NF-39217-2 (LOOP B)RTN HDR CLG WTR 24" III IC CONN TEST III IC C3 NSR C3 NSR ZH-173-11 ZH-173-10 ZH-173-8 ZH-173-9**6.

• DENOTES FURNISHED WITH EQUIPMENT.

III C3 NSR IC-ZH-67 (LOOP A)COMPUTER RM A/C 1" COOLER COOLER 4" 16904 FS 16903 FS TO ATMOS 3" VENT 31769 CV CL-16-6 2 PLCS DIAPH TYP 2" RUPTURE " ZH-7-2 V IIB III IIIII B III III PI 11724III III III III III III III III III III III III III III CHLD WTR SPLY CHLD WTR SPLY

7. DRN LINE ON UC IS NSR.

C3 NSR III IC BOUNDARY ISI CLASS FOR INSTRUMENTATION WITHIN TYPICAL BOUNDARY DESIGNATION IIB C-1 NF-39216-2 3" CLG WTR RTN HDR III III ZH PORTION REDRAWN PER SYS WALKDOWN, INCORP 04NS15 AS BUILT PER DRR PI-10-148 MOD#: EC-14554 DWN: DB 9-21-10 CHK'D: JEK 9-23-10 APP'D: CMR 9-27-10 REVIEWED: WJI 9-24-10 77 SAFETY CLASS FLAGS NOTES AND LEGEND. 2-ZH-65 DWN: KJF 10-4-10 CHK'D: JBS 10-12-10 AS BUILT-APP'D: CMR 10-18-10 78 MOD#: EC-14472 ADDED DRAWING CONT. AND COORDINATES FOR DRAIN LINES FROM 121 & 122 C.R. AIR CONDITIONING UNITS. PER DRR PI-09-163 2-CL-144 DWN: DB 11-18-10 CHK'D: JEK 11-24-10 AS BUILT-APP'D: CMR 11-29-10 79 MOD#: EC-17064 REV'D LINE NO -ZH-61 TO READ 2-CL-144.

04NS15 PER DRR PI-10-182 12353 TI 12355 TI AS BUILT-80 PER DRR PI-10-200 CHK'D: MGC 10-10-11 DWN: KJF 10-4-11 PER EC-17777. REFLECT PLANT CONFIG. VALVE ID ZH-6-34 TO REMOVED PIPE & CAP AT AS BUILT-APP'D: CMR 10-11-11 MOD#: EC-16866 CHK'D: WEH 10-3-11 DWN: KJF 9-30-11 TI-12353 TO 12355 @ A-8 @ DWG COORD B-5 & FROM FROM TI-12355 TO TI-12353 CHG'D TEMP INDICATOR ID SAS SEE DETAIL "A" THIS DWG G-12 DWN: DB 6-12-13 CHK'D: GTL 6-17-13 AS BUILT-81 MOD#: EC-20439 RENAMED U/C " POTABLE WTR FOR HUMIDIFIER TO READ SAS & CAPPED " TAP OFF OF SAS U/C LOC G-12 PER DRR PI-13-096 APP'D: CMR 6-17-13 TO WASTE" DRAIN"86" TO WASTE" DRAIN DWN: KJF 12-10-13 CHK'D: CMR 12-11-13 AS BUILT-82 MOD#: EC-22967 REVISED DWG TO REFLECT 121 & 122 CONT RM AIR HANDLER DRAIN PATH REMOVAL @ LOC B-2 & B-6. PER DRR PI-13-236 APP'D: CMR 12-11-13 DWN: MEA 2-26-15 CHK'D: JDF 3-6-15 AS BUILT-83 MOD#: EC-23559 VALVE ZH-6-23 & PIPE NSR CHANGED TO C3-SAFETY-RELATED; ISI CLASS 3. @ LOC B-5 PER DRR PI-15-026 APP'D: KJW 3-6-15 076-022 (TRAIN B)A/C UNIT CONT RM 122 076-021 (TRAIN A) A/C UNIT 121 CONT RM TO WASTE DRAIN DWN: DPB 10-18-16 CHK'D: RM 10-18-16 AS BUILT-84 MOD#: EC-20108 CORRECT EQUIPMENT NUMBER /LABEL ON 121 & 122 CONT RM A/C UNITS, (TRAIN A & B). PER DRR PI-16-220 APP'D: DB 10-19-16 DWN: MEA 4-5-17 CHK'D: RLM 4-6-17 AS BUILT-85 MOD#: EC-17647 VALVE CL-20-45 WAS GLOBE VALVE TO GATE VALVE.

PER DRR PI-17-069 APP'D: DB 4-6-17 V ZH-24-3"86" DWN: MEA 6-7-17 CHK'D: WJS 6-7-17 AS BUILT-86 MOD#: EC-15942 ADDED VALVE ZH-24-3 TO VENT A/C UNIT 045-1011 CHG. CONFIG OF ZH-24-1 FROM VENT TO DRAIN PER DRR PI-17-108 APP'D: DB 6-7-17 26360 TC 11656 PI 31765 CV DIAPHRAGM RUPTURE 26368 TC VALVE TO BE CLOSED DURING NORMAL OPERATION NF-39603-4 HOT I&C SHOP UNIT COOLERS TO RECORDS RM & 17411 TT RESVR FLUID CWR HP FROM 3" VENT TO OUTSIDE GLASS GAGE TO OUTSIDE BLDG 3" VENT C-6 NF-39603-4 CHLD WTR 18452 FI 27052 FE 174-041 (LOOP A)RHR PIT UC 11 274-032 SWGR BUS RM UC 111 274-031 SWGR BUS RM UC 121 174-032 LOOP B SWGR BUS RM UC 16 174-031 LOOP A SWGR BUS RM UC 15 AIR SEP & STRNR ROD DRIVE RM UC 11 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. DB 9-21-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 1300 1180 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 86 39603-3 NF-39603-3 N F-NSP GENERATION CAD NF-39603-3.DGN FLOW DIAGRAM LAB & SERV AREA A/C & CHLD WTR SFGD SYS UNIT 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 603000001331 CAD FILE: FIGURE 10.3-10 REV. 35 U10310.DGN 3" TO VOLUME CONTROL TANK NF-39238-2 NF-39248 NF-39248 NF-39248 NF-40322"""""""" CC-33-83 SM-5-34 SM-5-35 SM-5-62-"-"-"-"-"-"-" M M M M M M M M M M M M 2CC-33-78 (3/4-CC-60) 2SM-12-5 (1/4-2SM-33) (3/4-CC-60 (1/4-SM-33) SM-11-5 (3/8-SM-34) CC-33-84 SM-11-4 SM-5-29-" 12225 TI-" SM-12-4 SM-25-1 SM-19-33 SM-20-3 SM-5-17 12168 TI SM-5-11 SM-5-5 12166 TI 12140 TI 12141 TI 121139 TI 12231 TI 12232 TI 12226 TI 12169 TI 12233 TI 12234 TI 12235 TI 11272 PI 11271 PI 11273 PI 18274 FI 18286 FI 18275 FI 11650 PI 11651 PI 11274 PI 11275 PI 11276 PI 11652 PI 11653 PI 18277 FI 18231 FI 18276 FI 12237 TI 12228 TI 12227 TI 12171 TI 18245 FI 12236 TI 12167 TI XH-1-125--SM-8-CC-58-CC-60 SEE DWG. NO. NF-39238-2 GAS ANALYZER XH-1-124 XH-1001-5 XH-248-1 NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 NSR CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS 6.DWN: CLN 1/19/04 CHK'D: CMR 1/29/04 AS BUILT-PER DRR PI-03-191 FILMED 2/04 AB MOD#: 80Y130 ADDED VALVE SM-21-1.

DWN: JLB 3-24-04 CHK'D: CMR 3-25-04 AS BUILT-PER DRR PI-04-038 FILMED 4/04 AC MOD#: CORRECTED DWG REFERENCE TO GAS ANALYZER AT COORD C-3

--2SM-46--SM-50--SM-50--SM-50-SM-50--SM-50--SM-49--SM-41--SM-41--2SM-6--2 S M-6--2SM-49--2 S M-12--2SM-12--2 S M-12--2SM-36--2 S M-36--2 S M-29--2SM-29--2 S M-46--2 S M-38--2 S M-38--2SM-22--2 S M-21--2 S M-22--2SM-41--2SM-47 7.FC DENOTES FAIL CLOSED DENOTES PENETRATION NUMBERS CLASS BREAK QA TYPE IB III NSR C2 IB III NSR C2 IB III NSR C2 IB III --S M-19--S M-21--S M-22 C2 NSR III IB NSR C2 IB III NSR C2 IB III NSR C2 IB III --2 S M-37 C2 NSR III IB --2 S M-19 D NSR C2 IB III --2SM-7-2SM-7 2SM-15-7 C1 IA 2SM-14-3--2SM-13 2SM-14-4-2SM-13 IB C2 2SM-14-2--2SM-7 2SM-17-2 XH-1001-3 VENT SYS TO HD 1-2RC-81--2SM-1 2SM-17-1 SM-15-4--2SM-1 2SM-14-1-2SM-1 SM-4-1 SM-15-3 SM-13-3 SM-13-1 SM-13-2 SM-13-4 SM-15-2 SM-15-1 SM-15-6 SM-14-4 SM-14-3 SM-15-7 SM-15-5 SM-14-2 SM-17-2 SM-14-1 SM-17-1--SM-1--SM-1-SM-1--SM-7-SM-7--SM-7--SM-13-SM-13--SM-13--SM-13-SM-19 NSR C2 IB III XH-1-7 VENT SYS TO HD C1 IA IB C2 32400 MV 1-RC-81 C1 IA IB C2 32402 MV 32404 MV V-SM-23--SM-23-SM-30--SM-30--SM-37-2SM-19 C1 IA IB C2 2SM-15-2 2 S M-15-1 2SM-13-4 2 S M-15-3 2SM-13-1 2SM-13-2-2SM-23--2SM-23-2SM-30--2SM-30--2SM-13--2SM-13 31639 CV 31640 CV 2SM-13-3 31412 CV 31413 CV--2SM-31--2SM-24 2SM-15-4 31638 CV 31637 CV 31402 CV 31403 CV--SM-31--SM-24 V V V V D D SM-7-1 SM-7-2 SM-7-3 SM-7-4 SM-7-5 SM-7-6 SM-7-7 2SM-7-1 2SM-7-2 2SM-7-3 2SM-7-4 2SM-7-5 2SM-7-6 2SM-7-7 NF-39246-2 NF-39246-2 NF-39246-2 NF-39246-2 NF-39246-2 NF-39246-2 NF-39246-2 NF-39246-2 NF-39250 NF-39250 XH-1001-5 XH-1001-5 XH-1001-5 XH-1001-8 XH-1001-3 XH-1001-3 XH-1001-3 XH-1-39 NF-88740 NF-88740 XH-1-39 XH-1-39 XH-1-31 XH-1-7 XH-1-7 XH-1-7 IA,IB,IC,IIA,IIB,III DENOTES PIPING QA TYPES SM-5-4 135-041 (III/I)COOLER STEAM SAMPLE

1. 11 PRESSURIZER 135-081 (III/I)COOLER LIQUID SAMPLE
2. 11 PRESSURIZER S M-5-60-CC-58 135-061 (III/I)COOLER#11 HOT LEG SAMPLE DWG XH-248-1 FOR CONT SEE LAB SGB PANEL TO HOT CHEM
3. 12- 135-092#11 - 135-091 (III/I)COOLERS SGB SAMPLE

--2SM-2-CC-58 235-051 (III/I)COOLER LIQUID SAMPLE

1. 21 PRESSURIZER 2SM-5-60 2SM-6-4 2CC-33-81 235-061 (III/I)SAMPLE COOLER
2. 21 HOT LEG 2CC-33-77 CC-33-85 235-041 (III/I)COOLER STEAM SAMPLE
3. 21 PRESSURIZER 2SM-19-33 235-071 (III/I)COOLER#21 SGB SAMPLE 235-072 (III/I)COOLER#22 SGB SAMPLE 2CC-33-83-CC-58 2SM-5-35 2SM-5-34 2SM-5-62 (TYP 3)-" TEST (TYP 3)-" TEST D DWN: JEK 9-28-09 CHK'D: DB 9-30-09 AS BUILT-76 MOD#: EC-14556 REV DWG CONTS & MISC LN NOS. ADD SAFETY CLASS FLAGS, LEGEND AND NOTES

& MISC EQUIP ID'S. 04NS15 PER DRR PI-09-202 APP'D: CMR 11-9-09 DWN: JEK 6-24-10 CHK'D: DB 6-28-10 AS BUILT-77 MOD#: EC-12466 REV QA TYPE/DESIGN CLASS FOR SAMPLE COOLERS.

04NS15 PER DRR PI-10-090 APP'D: CMR 6-29-10 DWN: JEK 8-25-10 CHK'D: DB 9-13-10 AS BUILT-78 MOD#: EC-14788 DELETED QA TYPE FLAGS AT A-5, A-10. H-3 & H-8 FOR CONTINUATION TO VC SYS. 04NS15 PER DRR PI-10-125 APP'D: CMR 9-14-10 SM-6-10 1-SM-44 (-CC-60)(-2SM-9)HOT LEG B DWN: KJF 1-15-13 CHK'D: KH 1-17-13 AS BUILT-79 MOD#: EC-21191 CHANGED DESCRIPTION FOR SAMPLE LINE 3 ON UNIT 1 AT COORD A-3

PER DRR PI-13-007 APP'D: CMR 1-17-13 DWN: JEK 5-16-14 CHK'D: WJS 5-20-14 AS BUILT-80 MOD#: EC-17225 ADDED GRID REF TO DWG CONTINUATION. DELETED SAFETY CLASS BOUNDARY FLAG & DUPLICATE VLV NO. PER DRR PI-14-080 APP'D: CMR 5-20-14 XH-1-39 (C-4) AT COORD H-3. DWN: JEK 1-15-16 CHK'D: RLM 1-15-16 AS BUILT-81 MOD#: EC-25963 ADDED CAT 1 VENT ZONE SYMBOLS AT SAMPLING ROOM BOUNDARY.

PER DRR PI-16-010 APP'D: KJW 1-19-16 DWN: MEA 12-20-16 CHK'D: RES 12-21-16 AS BUILT-82 MOD#: EC-25658 ADDED VALVES TO P-TRAPS WL-86-4 & 2WL-86-4

PER DRR PI-16-291 APP'D: DB 12-21-16 2WL-86-4 WL-86-4 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4410 8450 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 82 39238 NF-39238 N F-NSP GENERATION CAD NF-39238.DGN.DGN FLOW DIAGRAM SAMPLING SYSTEM REACTOR PLANT UNIT 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 2SM-15-8 DESCRIPTION -"-" 40-59-1-84 (UNIT 1) 41-59-2-84 (UNIT 2) (1-2SM-45) 2SM-10-1 SM-58 SM-11-3 SM-20-4 SM-5-20 SM-5-21 SM-21-1 12170 TI"82""82" 603000001331 CAD FILE: FIGURE 10.3-11 REV. 35 U10311.DGN TE-15695 SYSTEMS: ZL - LOCAL VENT ZG - DIESEL GEN. COOLING ZE - SAFEGUARDS HEAT REMOVAL ZT - TURBINE ROOM VENT ZK - BATTERY ROOM VENT 34163 CD TE-15689 9600 4000 A BUS 150/160 SV-33616 11 14 34153 CD 23,400 CFM FC FC ES 11 21 12 13 15 25 TE-15695 SYSTEMS: ZL - LOCAL VENT ZG - DIESEL GEN. COOLING ZE - SAFEGUARDS HEAT REMOVAL ZT - TURBINE ROOM VENT ZK - BATTERY ROOM VENT LEGEND DENOTES SAFEGUARD EQUIPMENT NONDUCTED FLOW DUCTED FLOW MOTOR OPERATED DAMPER (NORM. OPEN) MOTOR OPERATED DAMPER (NORM. CLOSED) MAN. OPERATED DAMPER (NORM. OPEN) AIR OPERATED DAMPER (NORMALLY OPEN) AIR OPERATED DAMPER (NORMALLY CLOSED) WALL MOUNTED EXH. FAN ABBREVIATIONS: VFD - VERTICAL FIRE DAMPER HFD - HORIZONTAL FIRE DAMPER

1. SWITCHES FOR UNIT COOLER SHOWN ON NF-39603-2 & 3.

2. FOR ORIFICE FLG. & ANNUBAR DETAILS SEE NF-39609-12.

NOTES CFM M M CONT.CONT.SV-37010 VD FC CONTROL TE-15689 12,800 ATMOS.M CONTROL M A 22 ERCS PT. A B C D E FAN AIR INTAKE W. MEZZ FAN AIR INTAKE E. MEZZ CLOSE SPRING TO OPEN O.A. DAMPER AIR TO DIESEL GENERATOR (QA I)SUPPLY FAN - TRAIN "A" 121 DIESEL GENERATOR (QA I)EXHAUST FAN - TRAIN "A" 121 DIESEL GENERATOR (QA I)SUPPLY FAN - TRAIN "B" 122 DIESEL GENERATOR (QA I)EXHAUST FAN - TRAIN "B" 122 DIESEL GENERATOR 34160 CD 34161 CD 34162 CD 34159 CD 34025 CD LOUVER DAMPERS OUTSIDE AIR 23 & 24 TURB. BLDG. VENT SUPPLY FAN 22 TURBINE BLDG. VENT SUPPLY FAN 21 TURBINE BLDG. LOUVER DAMPER OUTSIDE AIR 25 TURB. BLDG. OUTLET DAMPER BLDG. FAN 22 TURBINE LOUVER DAMPERS RECIRCULATION 21 & 22 TURB. BLDG. 34158 CD 34156 CD CFM 47,642 LOUVER DAMPER OUTSIDE AIR 15 TURB. BLDG. LOUVER DAMPER OUTSIDE AIR 12 TURB. BLDG. LOUVER DAMPER OUTSIDE AIR 11 TURB. BLDG. AIR LOUVER DAMPER 14 TURB. BLDG. OUTSIDE 19014 ES LOUVER DAMPER OUTSIDE AIR 13 TURB. BLDG. CFM 47,642 34154 CD 34152 CD VENT SUPPLY FAN 12 TURBINE BLDG. VENT SUPPLY FAN 11 TURBINE BLDG. CFM 47,642 34151 CD 34150 CD LOUVER DAMPERS RECIRCULATION 11 TURB. BLDG. LOUVER DAMPERS RECIRCULATION 12 TURB. BLDG. OUTLET DAMPER BLDG. FAN 11 TURBINE 34056 CD 19040 ES OUTLET DAMPER BLDG. FAN 21 TURBINE OUTLET DAMPER BLDG. FAN 12 TURBINE 34057 CD 34058 CD 34059 DC 48168 TU 48169 TU 48171 TU 48172 TU 48173 TU 34060 CD 36050 CD 36047 CD 36048 CD 34197 CD 19041 ES 19016 ES 19015 ES 19017 ES 19018 ES 3150 CFM PUMPS CONDENSATE 21 22 23 6250 CFM PUMPS HEATER DRAIN 21 22 23 19092 ES 26355 TC 32264 MD DAMPER CONTROL FLOW 3150 CFM PUMPS CONDENSATE 11 12 13 CFM 735 5600 CFM BUS 13/14 4.16 KV SWGR CFM 13,600.34198 CD DAMPER FLOW CONTROL RECYCLE FAN 121 BATTERY ROOM MEASURING STA. AIR FLOW 12028 TI 26390 TC 17771 FS 12027 TI TE-15689 TE-15695 5600 CFM BUS 23/24 4.16 KV SWGR 36058 CD 36057 CD 4000 CFM FW PUMPS 11/21 AUX. 3200 CFM FW PUMPS 12/22 AUX. 800 CFM BATTERY ROOM 12 800 CFM BATTERY ROOM 22 800 CFM BATTERY ROOM 11 800 CFM BATTERY ROOM 21 36054 CD 36056 CD 36055 CD MEASURING STA. AIR FLOW ROOF VENT FANS & DAMP'S TURBINE BLDG. HIAW-73 (6) UNIT #1 32250 MD 32251 MD 32252 MD 32253 MD 32254 MD 32255 MD 32256 MD 32257 MD 32258 MD 32259 MD 32260 MD 32261 MD ROOF VENT FANS & DAMP'S TURBINE BLDG. HIAW-1073 (6) UNIT #2 EXHAUST FAN 11 SWGR ROOMS EXHAUST FAN 21 SWGR ROOMS 19019 ES 19020 ES 34196 CD 19410 ES 19011 ES 56,400 CFM COL. 1-8, A-G UNIT 1 MEZZ FLOOR TURBINE BLDG. 03 57300 04 57300 01 57300 02 57301 06 57301 04 57301 05 57301 34061 CD 34062 CD 34063 CD 05 57300 06 57300 01 57301 19009 ES 19010 ES 32262 MD 32263 MD RECYCLE FAN 122 BATTERY ROOM COOLING COIL 122 BATTERY ROOM MEASURING STA. AIR FLOW 12042 TI 12041 TI 17772 FS 22017 T 26302 TC ROOM TEMP CONTROLLER 121 DIESEL GENERATOR TURBINE BLDG. COMB. AIR FROM TO ATMOS.COMBUSTION GAS TEMP LO TEMP HI 16471 TS 16991 TS 22018 T ROOM TEMP CONTROLLER 122 DIESEL GENERATOR TO ATMOS.COMBUSTION GAS 16472 TS (NORMAL)TURBINE BLDG. COMB. AIR FROM 130,000 CFM OUSIDE AIR CFM 94,100 19043 ES ROOM BOOSTER 121 SAMPLE HOOD BOOSTER 122 SAMPLE ROOM 51,800 CFM COL. 10-17, A-G UNIT 2 MEZZ TURBINE BLDG. COOLING COIL (017-091) 121 HOT CHEM LAB ZT-1 DAMPER ISOLATION MANUAL 22015 T 22016 T 130,000 CFM OUSIDE AIR LOUVER FIXED LOUVER FIXED#11 BUS#12 BUS BETW. COLS. (8-10) & (A-B) AIR OPERATED SWITCHES ELEV. 750'-6" TOILET EXH. FAN

1. 121 SERVICE BLDG.

EXH. FAN & DAMPER

1. 121 MACHINE SHOP EXH. FAN & DAMPER
2. 121 WELD SHOP EAST EXH. FAN 8050 CFM PUMPS 21 / 22 FW 41 VFD BUS ROOM 121 480V SWGR BUS ROOM 111 480V SWGR OIL STG RM EXHT FAN 10 SV-37017 SV-37018 BUS 250/260 ERCS PT.CFM 47,642 SV-37007 COOLING COIL 121 BATTERY ROOM M 34,000 TEMP LO TEMP HI 8005D 1Y 26303 TC CONTROL CONTROL 55903 ES M M 34,000 CFM CONTROL SV-33987 CONTROL FIXED LVR 34049 CD NO FO SV-33498 CONTROL CONTROL FIXED LOUVER 24 25 21 34157 CD SV-33623 CONTROL SV-33626 SV-33628 SV-33627 CONTROL 22 23 SUMMER SV-33625 CONTROL 19042 ES 120,00 CFM 23,800 CFM 28,000 CFM 5200CFM 2000CFM SV-33497 24,800 CFM CONTROL VD CONT.VD VD VD ATMOS.TE-15685 TE-15691 CONT.8000 CFM 480V SWGR 34194 CD SV-37014 CONTROL SV-33164 48170 TU CONTROL CONTROL CONTROL SV-33496 FC VFD 35 CONTROL CONTROL TE-15694 TE-1568824 ,000 C F M46 ,270 C F M CONTROL FC SV-33617 CONTROL CONTROL CONTROL RECIRC.SV-33163 CONTROL CONTROL SV-33620 SV-33618 SUMMER OUTSIDE AIR 32265 MD RETURN AIR RETURN AIR CONTROL 34155 CD SV-33621 CONTROL SV-33622 15 13 DAMPERS AIR LOUVER BLDG. OUTSIDE 21 & 22 TURB.

SV-33624 CONTROL 21 5000 CFM CONTROL (162-66)CONTROL 93,670 CFM 120,000 CFM 1250 CFM (TYP. 4 PLACES) SV-37015 FC SV-37016 CONTROL CFM 365 LAB COLD CHEM VD VD VFD 29 VFD 33 CONTROL CONTROL SV-33463 FC CONTROL 34195 CD FC 34192 CD FC 36051 CD VFD 31 HFD 50 HFD 51 3600 11,200 VD VD VD 34193 CD CONTROL CONTROL FC HFD 54 HFD 56 SV-37013 CONTROL VFD 53 VFD 52 VFD 45 VFD 55 CONTROL 11,200 CFM CONT.CONT.26391 TC TE-15693 TE-15687 34202 CD CONTROL 34201 CD FC 5600 24,800 CFM CONTROL CONTROL 24000 CFM 28,000 CFM CONTROL CONTROL FC ATMOS EXHAUST FAN SYSTEM ZL SOUTH EXH. FAN 130,000 CFM IN SUMMER EAST WALL NORTH WALL WEST WALL TURBINE BUILDING VENT LOUVERS MANUAL CONTROL 11 LOUVERS 14 LOUVERS B A 4 LOUVERS C 03 57301 ES ES ES 22 23 24 ES 26 33,000 CFM EACH TURBINE BLDG. ROOF VENT FANS ES ES TYP.ES ATMOS.14 16 02 57300 ES ES ES 2000 CFM CONT. ON DWG. NF-39600 ROOM BOOSTER FAN EL. 715'-0" TO AUX BLDG #121 SAMPLE M CONT. ON DWG. NF-39600 ROOM HOOD BOOSTER FAN TO AUX BLDG #122 SAMPLE 5200 CFM 43 VFD 11 21 CONTROL CONTROL M M ATMOS.ATMOS.HFD 84 FILTER HFD 85 13,600 CONTROL FC 8000 CFM 480V SWGR 34191 CD CONTROL ELEC.CONTROL 16990 TS 7005D 1Y M M M ES 11 600 CFM 7,600 FC LEGEND SR NSR NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS 37 VFD 39 VFD 36053 CD 36049 CD 36052 CD DAMPER CONTROL FLOW EXHAUST FAN TOILET SERVICE BLDG. EL. 741' @ Ma MACHINE SHOP EL. 741' @ Ma WELD SHOP EL. 735'-0" OFFICE #121 STOREKEEPER EL. 735'-0" SHOP #121 ELECTRIC OFFICE SHOP 7,720 CFM PUMP 11/12 FW 6300 CFM PUMPS HEATER DRAIN 11 12 13 19409 ES A.C. UNIT LUNCH ROOM HFD 59 NO NO NO NO NO NO NO NO NO NO NO NO NO CONT. ON DWG. NF-39600 & TOILET EL. 735'-0" TO AUX BLDG CLOSET OPER. FLOOR UNIT 1 & 2 TURB. ROOM 19012 ES 19013 ES SR NSR 122 DIESEL (OUTSIDE EXHAUST FAN) 121 DIESEL (OUTSIDE EXHAUST FAN) I III NSR SR III I SR NSR SR NSR III I III I SR NSR III I SR NSR III I CLASS BREAK QA TYPE III I SYSTEM ZT (QA TYPE III), UNLESS OTHERWISE NOTED. SR NSR III I DWN: DMN 4-5-10 CHK'D: RWS 4-14-10 AS BUILT-80 MOD#: EC-15433 ADDED BATTERY ROOM RECYCLE DAMPER ID'S ZT-3 THRU ZT-10

PER DRR PI-10-030 APP'D: CMR 4-14-10 ZT-4 ZT-3 ZT-6 ZT-5 ZT-7 ZT-8 ZT-9 RECYCLE DAMPER #3 121 BATTERY ROOM RECYCLE DAMPER #4 121 BATTERY ROOM RECYCLE DAMPER #2 121 BATTERY ROOM RECYCLE DAMPER #1 121 BATTERY ROOM RECYCLE DAMPER #5 122 BATTERY ROOM RECYCLE DAMPER #6 122 BATTERY ROOM RECYCLE DAMPER #7 122 BATTERY ROOM RECYCLE DAMPER #8 122 BATTERY ROOM 032-041 032-042 032-012 032-011 032-231 032-232 DWN: JEK 7-27-10 CHK'D: DB 8-4-10 AS BUILT-81 MOD#: EC-15904 ADDED SAFETY CLASS FLAGS & MISC EQUIPMENT ID NOS. FOR D1/D2 DSL GEN ROOMS. 04NS15 PER DRR PI-10-122 APP'D: CMR 8-5-10 NSR NSR NF-39255-1 NF-39255-1 SR NSR III SR NSR SR NSR SR NSR SR NSR SR NSR SR NSR SR NSR III SR SR III III III III III III NSR SR I III SR NSR III I NSR III SR NSR III I SR NSR III I SR NSR III I SR NSR I III SR NSR III I SR NSR III I SV-37008 CONT CONT CONT NSR III SR NSR I III SR III I NSR NSR SR III I SR III I NSR SV-37012 SV-37011 DWN: JEK 10-13-10 CHK'D: DB 10-19-10 AS BUILT-82 MOD#: EC-12605 ADDED WALL/FLOOR SYMBOL REVISED SAFETY CLASS DESIGNATIONS FOR TURBINE BUILDING SECTION & VENT PER DRR PI-10-164 APP'D: CMR 10-20-10 04NS15 WALL OR FLOOR TO DRAWING & LEGEND. SV-37009 NSR SR III I CONT DISCHARGE PATH FOR 11, 12, 21 & 22 BATT RMS. ZT-11 ZK-1 ZK-2 2ZK-1 2ZK-2 CFM 600 ZT-10 ZT-12 DWN: LAB 5-24-11 CHK'D: RWS 5-26-11 AS BUILT-83 MOD#: EC-17696 ADDED DAMPER ID NO.'s ZK-1, ZK-2, 2ZK-1, 2ZK-2, ZT-11 & ZT-12. CORRECTED ZT-6 TO ZT-10 & ZT-8. DAMPER NO.'s FROM ZT-5 & PER DRR PI-11-100 APP'D: CMR 5-26-11 A A OIL STORAGE ROOM 9 M M NC SA-2 DAMPER ISOLATION NC SA-4 DAMPER ISOLATION BLDG TURBINE TO BLDG TURBINE TO SA-1 DAMPER GRAVITY SA-3 DAMPER GRAVITY 15,500 CFM 15,500 CFM TO OUTSIDE TO OUTSIDE

1. 125 AIR COMPRESSOR
2. 124 AIR COMPRESSOR 032-561 EXH FAN 032-562 EXH FAN DWN: DB 6-8-11 CHK'D: JMD 7-21-11 AS BUILT-84 MOD#: EC-15491 ADDED DAMPERS NO.'s SA-1 THRU 4, AIR COMPRESSORS SA-124 & 125

& EXH FANS 032-561 & 562. PER DRR PI-11-122 APP'D: CMR 7-21-11 VFD-57 DWN: JEK 12-30-14 CHK'D: JKS 1-5-15 AS BUILT-85 MOD#: EC-21572 ADDED FIRE DAMPER VFD-57 AT GRID B-7.

PER DRR PI-14-191 APP'D: CMR 1-5-15 DWN: JEK 1-21-15 CHK'D: JKS 1-27-15 AS BUILT-86 MOD#: EC-21574 ADDED DAMPER VFD 58 OVER NEW DOOR #283 AT GRID H-6.

PER DRR PI-14-189 APP'D: CMR 1-27-15 "89" VFD 58 34199 CD 34200 CD 2800 CFM BUS 16 4.16 KV SWGR 2800 CFM BUS 15 4.16 KV SWGR DWN: MEA 3-4-15 CHK'D: RLM 3-4-15 AS BUILT-87 MOD#: EC-22498 CORRECTED LABEL'S FOR CD-34199, CD-34200, SV-37015, SV37016, BUS 15 AND BUS 16. PER DRR PI-15-027 APP'D: KJW 3-4-15 DWN: MEA 8-24-16 CHK'D: RSA 11-1-16 AS BUILT-88 MOD#: EC-22024-1 15 LOUVERS CHANGED TO 11 LOUVERS - U2 GEN. REPLACEMENT.

PER DRR PI-16-184 APP'D: DB 11-2-16 032-012-BZ FAN PITCH CONTROLLER 122 DIESEL GENERATOR EXH. 032-011-BZ FAN PITCH CONTROLLER 121 DIESEL GENERATOR EXH. 15891 TE-15892 TE-032-042-BZ SUPPLY FAN PITCH CONTROLLER 122 DIESEL GENERATOR 032-041-BZ SUPPLY FAN PITCH CONTROLLER 121 DIESEL GENERATOR "89" DWN: MEA 11-14-16 CHK'D: AMS 11-14-16 AS BUILT-89 MOD#: EC-24160 ID. PITCH CONTROLLER'S DIESEL GEN. ROOMS D1, D2 ADDED TEMP. ELEMENTS

PER DRR PI-16-223 APP'D: DB 11-15-16 "89" REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. JEK 7-27-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 1300 4820 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 89 39601 NF-39601 N F-NSP GENERATION CAD NF-39601.DGN HVAC FLOW DIAGRAM TURBINE BUILDING-DIESEL GENERATOR UNIT 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. TE-15686 TE-15692 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 OLD ADMIN. BLDG. TURBINE BUILDING 715'N. TURB BLDG. VENT SUPPLY FANS TB VENT/INTAKE FANS D1 DIESEL GEN. D2 DIESEL GEN. SV-33629 SV-33619 CONT.CONT.TE-15684 TE-15690 FC FC 200 CFM CONTROL ES 55403 CONTROL 12

603000001331 CAD FILE: FIGURE 10.3-15 REV. 35 U10315.DGN 1" ROWS 11 & G 718"-6" & 738'-6" NEAR COL. " HOSE CONN. AT EL. 698'-6"," ROOM TO RELAY 2SA-1-1 2" 3" 2SA-2-95 2SA-2-96 SA-2-51 3" 2" AUX. BLDG. ROOF " HOSE CONN. 2" SA-29-1 SA-2-40 18EL. 698'-6" 02 41272 PI DURING NORMAL OPERATION WITH BLIND FLANGES REMOVED & BLANKED-OFF FLEXIBLE CONN. TO BE 40 EL. 737'-0" DURING NORMAL OPERATION WITH BLIND FLANGES REMOVED & BLANKED-OFF FLEXIBLE CONN. TO BE 2" 2" SA-17-3 2" SA-17-1 EL. 738'-6" EL. 698'-6" 16 22"" 1" 2"" 738'-6" 43@EL.19 2"" EL.718'-6"" 2" EL.698'-6" 35 2" 1""""" 1" 1" 1" 1" 1""" EL.698'-6" 1"" 2"" CP-44-2 IN 2 GPM ROOM EL. 718'-6" IN SA-48-1 SA-48-2 SA-48-3""" 2SA-2-51 AIR SUPPLY COMPRESSED INDICATOR PRESSURE REG SPLY AIR INFLATABLE SEAL CONTROL ASSY (TYP) 2SA-15-4 SA-2-150 SA-2-154 SA-2-155 AND CABLE PULLING ROOM EL 718'-6" LOCATED IN RELAY " HOSE CONN. AT SA-2-151 SA-2-149 SA-2-148 703'-0"" HOSE CONN. AT EL. SA-2-5 716'-6", 738'-9", & 760'-0". " HOSE CONN. AT EL'S. 758'-6"" HOSE CONN. AT EL. 718'-0", 739'-3", & 760'-0". " HOSE CONN. AT EL'S. REACTOR SHIELD WALL CONTAINMENT VESSEL 703'-0"" HOSE CONN. AT EL. WELD & METAL SHOP 738'-6" LOCATED IN " HOSE CONN. AT EL. ROWS 2 & Ka 718'-6" & 738'-6" NEAR COL. " HOSE CONN. AT EL. 698'-6", IN DECONTAMINATION AREA " HOSE CONN. AT EL. 698'-6" AT EL. 698'-6"" HOSE CONN'S. " DRAIN SA-2-6 SA-2-7 SA-2-8 SA-13-5 SA-2-9 SA-2-11 SA-2-12 SA-2-13 SA-2-10 SA-2-96 SA-2-93 SA-2-94 SA-2-95 SA-16-1 SA-2-91 SA-2-92 SA-3-6 SA-2-144 SA-16-6 SA-2-145 SA-19-2 SA-2-62 SA-38-3 SA-2-82 SA-2-83 SA-2-84 SA-19-4 T SA-81-1 SA-71-2 SA-79-1 SA-55-2 SA-2-70 SA-2-79 SA-2-80 SA-2-75 SA-50-7 TD-32-1 SA-2-86 SA-2-88 SA-2-90 SA-2-106 SA-55-1 SA-19-5 SA-2-72 SA-2-73 SA-2-74 SA-2-138 SA-30-2 SA-1-4 SA-20-3 SA-2-81 SA-2-76 SA-2-77 SA-2-78 SA-2-19 SA-2-20 SA-2-21 SA-2-22 SA-2-15 SA-2-16 SA-2-17 SA-2-3 SA-2-1 SA-2-2 SA-2-28 SA-2-27 SA-29-2 SA-13-7 SA-2-26 SA-20-6 SA-2-58 SA-2-52 SA-2-53 SA-2-54 SA-2-55 SA-2-56 SA-2-57 SA-2-60 SA-2-61 SA-2-97 SA-2-98 SA-2-99 SA-2-63 SA-2-64 SA-2-65 SA-2-66 SA-2-67 SA-2-68 SA-2-69 SA-2-85 SA-2-87 SA-2-105 SA-2-101 SA-2-102 SA-2-117 SA-2-118 SA-50-3 SA-50-4 SA-50-5 SA-50-6 SA-20-1 SA-5-1 SA-2-153 SA-2-152 SA-3-5 SA-17-2 SA-19-1 SA-2-166 2SA-17-2 2SA-2-5 2SA-2-10 2SA-29-2 2SA-13-7 2SA-17-1 SA-20-2 SA-2-30 SA-48-6 SA-48-4 SA-48-5 SA-2-18 SA-50-1 SA-50-2 SA-2-146 SA-2-147 2SA-5-1 SA-2-31 SA-2-32 SA-2-14 SA-2-165 SA-2-167 2SA-2-9 2SA-2-8 2SA-2-11 2SA-2-12 2SA-2-13 2SA-16-6 SA-2-29 SA-2-35 SA-2-36 SA-20-5 SA-2-162 SA-2-160 SA-2-34 2SA-2-52 2SA-2-53 2SA-2-54 2SA-2-55 2SA-2-145 2SA-2-59 2SA-2-60 2SA-15-4 2SA-2-56 2SA-2-62 2SA-19-2 2SA-80-4 2SA-80-6 2SA-80-2 2SA-80-3 2SA-80-10 2SA-80-14 2SA-80-12 2SA-80-13 2SA-80-15 2SA-80-11 2SA-80-9 2SA-80-5 2SA-80-7 2SA-2-91 2SA-2-57 2SA-2-3 2SA-2-2 2SA-2-1 2SA-2-7 2SA-2-6 2SA-2-4 2SA-2-67 2SA-2-69 2SA-2-70 2SA-2-86 2SA-2-88 2SA-2-90 2SA-2-106 2SA-2-103 2SA-2-104 2SA-2-107 2SA-2-89 2SA-2-87 2SA-2-85 2SA-22-1 2SA-2-79 2SA-2-80 2SA-2-111 2SA-2-112 2SA-2-113 SA-2-121 SA-2-122 SA-2-111 SA-2-112 SA-2-113 SA-2-110 SA-2-109 SA-20-4 SA-2-119 SA-2-120 SA-1-3 2SA-1-3 2SA-2-72 2SA-2-73 2SA-2-74 2SA-2-76 2SA-2-77 2SA-2-78 SA-2-114 2SA-17-3 SA-2-115 SA-2-41 SA-18-1 SA-2-38 SA-2-39 SA-18-2 2SA-2-97 2SA-2-98 2SA-2-99 2SA-2-63 2SA-2-64 2SA-2-65 2SA-23-1 2SA-2-82 2SA-2-83 2SA-2-84 2SA-80-1 2SA-19-4 SA-4-1 SA-2-103 SA-2-107 SA-2-89 SA-2-37 SA-18-3 SA-15-5 SA-2-4 2SA-80-8 2SA-2-144 2SA-2-132 2SA-2-128 2SA-2-126 2SA-2-125 2SA-2-124 2SA-2-123 2SA-2-129 2SA-2-127 2SA-2-136 2SA-2-135 2SA-2-130 2SA-2-131 SA-15-2 SA-15-1 SA-15-4 SA-2-130 SA-2-131 SA-2-135 SA-2-136 SA-2-129 SA-2-128 SA-2-127 SA-2-126 SA-2-125 SA-2-124 SA-2-123 SA-2-134 SA-2-137 SA-2-132 SA-2-133 SA-3-3 SA-3-4 SA-15-3 SA-2-139 SA-2-140 SA-2-141 SA-2-142 SA-2-143 SA-2-169 M"""""""""""""""""""""""""""""""""""""""" 2SA-55-1 NEAR COL. ROW'S 7 & P 718'-6", 738'-6" & 758'6"" HOSE CONNS. AT EL. ASSEMBLY AT EL. 758'6"" TO LOUVER VALVE 702'-6"" HOSE CONN. AT EL. " EL. 698'-6" EL. 698'-6" @ 7 & P 5GPM ROOM EL. 698'-6" OUTSIDE 31 33 EL. 718'-6" EL. 720'0" @ Q & 9 EL. 698'-6" 32 34 EL. 718'6" 738'-3" & 759'-6"" HOSE CONN'S AT EL. 716-0", NEAR COL. ROW'S 11 & P 718'-6", 738'-6" & 758'6"" HOSE CONN'S AT EL. 698-6", WITH TEST CONECTIONS PROVIDE THIS BLIND FLANGE 21 21 EL. 718'-6" ON CRANE 14 2" 2" 2" AT EL. 759'-6"" HOSE CONN'S AT EL. 702'-0"" HOSE CONN'S EL. 715'-0" EL. 698'-6" 8 COL ROW'S 11 & L EL. 698'-6" NEAR " HOSE CONN. AT EL. 698'-6"" 1 " CONCENTRATE HOLD'G TK. EL. 698-6" NEAR " HOSE CONN AT LOCATED ON PIPE VAULT WALL " HOSE CONN AT EL. 738-6" COL. ROWS 7 & L EL. 718'-6" NEAR " HOSE CONN. AT COL. ROWS 7 & L EL. 698'-6" NEAR " HOSE CONN. AT ROWS 6&J NEAR COL.COL. ROWS 9 & K EL. 698'-6" NEAR " HOSE CONN. AT 17 EL. 698'-6" COL. 9 & K AT EL. 718'-6" NEAR " HOSE CONN. "" CHEM. TABLE GENERAL " TO " CHEM LAB." TO HOT 718'-0" EL.ROOM SAMPLE HOT ELEV. 718' EL.715'-0" 2" 37 2"" EL 718'-0" " HOSE CONN, AT EL. 698'-6" SKYCLIMBER TO 2" 19 EL. 758'-6"" 4 EL. 737'-0" 7 ON CRANE 6 2 EL. 715'-0" LOCATED IN FILTER ROOM " HOSE CONN. AT EL. 738'-6" BELOW FAN FL. SPT RESIN PMP " TO 122 TO WAREHOUSES 1 " 12 1" GATE VALVE 2" SA-39-5 ASSEMBLY AT EL. 720'-0"" TO LOUVER VALVE ROW'S 1 & F NEAR COL.ROOF AT EL. 719'-9" 2" HOSE CONN. 718'-6" & 738'-6"" HOSE CONN. AT EL. 698'-6" GEN ROOM D-2 DIESEL EL'S. 739'-9" & 759'-0"" HOSE CONN'S AT 3 38 EL. 715'-0" EL. 737'-0" GEN ROOM D-1 DIELEL NEAR PERS. AIR-LOCK " HOSE CONN. NEAR COL. ROW'S 5 & J " HOSE CONN. AT EL. 738'-6""" STD. PIPE ANNULUS NEAR CA HOSE CONN. AT 738'-6" 2" TO CA STD. PIPE 758'-6"" HOSE CONN. BLDG. MU FAN LOCATED IN AUX. " HOSE CONN. 758'-6" COL. ROW'A 5 & J EL. 758'-6" NEAR " HOSE CONN. AT GEAR ROOM LOCATED IN SWITCH " HOSE CONN. AT EL. 738'-6" 2" 2" 1 "" ROW'S 3 & G NEAR COL. ROW'S 5 & G NEAR COL. 718'-6", 738'-6" & 758'-6"" HOSE CONN. AT EL. 698'-6", NEAR COL. ROW'S 5 & J AT EL. 718'-6"" HOSE CONN. LOCATED IN HP RM EL. 718'-6"" HOSE CONN. AT BELOW ROOF 36 HOT SHOWER LOCATED IN EL. 718'-6" AT EL. 718'-6" SWITCH GEAR ROOM " HOSE CONN. IN 15" EL. 698"-6" COL. ROW'S 8 & H EL. 698'-6" NEAR " HOSE CONN. AT HYDROGEN HOUSE AT EL. 698'-6"" HOSE CONN. NEAR COL. ROW'S 1 & B " HOSE CONN. AT EL. 698'-6" NEAR COL. ROW'S 1 &C EL. 698'-6" & 718'-6"" HOSE CONN. AT TO HEATING BOILER SA-2-156 PIT SUMP PUMP SUPPLY TO #11 COND. COL. ROW'S 3 & C. AND EL. 683'-0" & 699'-6" NEAR " HOSE CONN. AT NEAR COL. ROW'S 2 & A EL'S. 698'-6", 715'-6" & 738'-6"" HOSE CONN. AT " 1 " 2" INSIDE BLDG. OUTSIDE BLDG. EL. 702'-6" (TYP) " HOSE CONN'S AT CHLORINE HOUSE SCREEN HOUSE 1" 1" 1" 1" EL. 698'-6" EL. 673'-6" EL. 698'-6" EL. 698'-6" EL. 698'-6" EL. 698'-6" EL. 673'-6""""""" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 1" 1" 1" 1" 1" 1" 1"""""" 1"" EL. 673'-6" EL. 673'-6" EL. 673'-6" EL. 698'-6"" 2SA-2-137 2SA-15-3 SA-36-1 2" 2" 2" BY MDCT EL. 698'-6"@ Q & 9a EL. 700'-3" 24 EL.758'-6"""" EL. 697'-6"" HOSE CONN. AT EL. 718'-6" EL. 738'-6" CONN'S WITH TEST BLIND FLANGE PROVIDE THIS 18893 PI 18892 PI 18890 PI 18891 PI 18888 PI 18889 PI 11172 PI 11171 PI COL. 7&N " HOSE 758'-6" NEAR CONN. AT EL.(TYP.)INFLATABLE SEALS " OUTLETS TO 1"" EL. 758'-6"" SA-2-24" HOSE CONN. AT AREA SPENT FUEL POOL EL. 758'-6" IN IN LNDRE AREA

     " HOSE CONN. AT EL. 739" C L@35 PPSIG (TYP)

RELIEFS VALVES SET CONTROL ASSY. (TYP) INFLATABLE SEAL EL. 738'-6""" 1" 41 EL. 758'-6"" EL. 738'-6" 23 1" EL. 738'-6" 42" HOSE CONN. AT EL. 738'-6" LOCATED ON PIPE VAULT WALL SA-2-33 SA-2-25"" 27 EL. 758'-6"""" 26 758'-6" EL." 2" 2" CONN.SPARE NEAR COL. 11 & L EL. 718'-6"" HOSE CONN. AT NEAR COL. 11 & K EL. 758'-6"" HOSE CONN. AT " TO HOT MACH SHOP AREA " FUTURE)ROOM (CAPPED FOR " INCOUNTNG EL. 698'-6" FLOOR BELOW OPERATING " 1""" 2"" 1" 2" 2" 2" SA-1-2 AT EL. 698'-6" & 718'-6" TO ELECTRICAL ROOMS EL. 698'-6" NEAR COL. ROW'S 7& G 718'-6" & 738'-6"" HOSE CONN. AT EL. 698'-6," COL. ROW'S 5 & F EL. 683'-0" NEAR " HOSE CONN. AT SA-1-1 2" AT EL. 738'-3"" HOSE CONN. AT EL. 716'-0"" HOSE CONN. AT EL. 720'-0"" HOSE CONN. REACTOR SHIELD WALL CONTAINMENT VESSEL AT EL. 716'-0"HOSE CONN. AT EL. 738'-3"HOSE CONN. AT EL. 759'-6"HOSE CONN. 9 39 EL. 715'-0" EL. 715'-0" 13 12 EL. 737'-0" 11 EL. 737'-0" 10"" 1" UNIT 2 REACTOR BLDG. UNIT 1 REACTOR BLDG. 2" GATE VALVE ROW'S 9 & H NEAR COL. EL. 758'-6"" HOSE CONN'S AT " AT EL. 718'-6" SWITCH GEAR ROOM " HOSE CONN. IN " 2" 1 "" 2" CP-40-6" COL. ROW'S 8 & F AT EL. 698'-6" NEAR

 " HOSE CONN.

SEE DWG. NF-39244 3" FROM INSTRUMENT AIR SYS. " 1" SA-3-1 32318 3" 3" 2" GATE VALVE 2" 3" 2SA-1-2 DRN. AT EL. 698'-6" HOSE CONN. & HDR 11169 PI 3" 2" 2" 2""" 3" 1 " NEAR COL. ROWS 10&D AT 698'-6" & 718'-6"" HOSE CONN'S (TYPICAL)AT EL. 738'-6"" HOSE CONN. NEAR COL. ROW'S 12 & J. 718'-6", 738'-6" & 758'-6"" HOSE CONN. AT EL. 698'-6" 2" 2""" EL. 718'-6" EL. 738'-6" 20 44 2" ROW'S 13 & J. NEAR COL. 718'-6" 738'-6"," HOSE CONN. AT EL. 28 EL. 698'-6" LEVEL 718""" LOCATED IN SWITCH GEAR ROOM " HOSE CONN. AT EL. 738'-6" 1" 1"""" GLOBE VALVE STANDARD PIPE NEXT TO CA 738'-6" IN ANULUS " HOSE CONN. AT EL. NEAR PERS. AIR-LOCK " HOSE CONN. COL. ROW'S 13 & J EL. 758'-6" NEAR " HOSE CONN. AT COL. ROW'S 13 & H EL. 758'-6" NEAR " HOSE CONN. AT GEN. ROOM D-3 DIESEL EL. 398'-6" IN " HOSE CONN. AT AT EL. 758'-6"" HOSE CONN. 4" 1 " ROW'S 13 & G NEAR COL. 698'-6", 718'6" & 738'-6" " HOSE CONN. AT EL. ROW'S 15&G NEAR COL.1 " 1 " 1 " 1 "" HOSE CONN'S (TYP) 1" 1" 1 " 1 " 1 " 1 " 1 " 1 " AT EL. 739'-0" AT EL. 722'-0" (EAST END) AT EL. 699'-0" (EAST END) AT EL. 699'-0" (SOUTH END) AT EL. 691'-0" (NORTH END) AT EL. 691'-0" (NORTH END) AT EL. 691'-0" (SOUTH END) AT EL. 691'-0" 1" 1" 1" 1" 1" (EAST END) AT EL. 699'-0" (WEST END) AT EL. 699'-0" AT EL. 722'-0" AT EL. 739'-0" D5 4" D6 4" ASSY. AT EL. 740'-6"" TO LOUVER VALVE COL. ROW'S 10 & H EL. 698'-6" NEAR " HOSE CONN. AT 29 EL. 698'-6"" EL. 725'-0" HOSE CONN. @ COL. ROW'S 15 & E EL. 683'-0" NEAR " HOSE CONN. AT AT EL. 718'-6" AT EL. 738'-6" 2" 3" AT EL. 698'-6" NF-86172-1 DWG.CONT. ON 2SA-2-68 1" ROW'S 17 & C NEAR COL. & 738'-6" EL'S. 698'-6", 718'-6" " HOSE CONN. AT " 3" ROW'S 16 & A NEAR COL. & 738'-6" EL'S. 698'-6", 715'-6" " HOSE CONN. AT 3" 1 " COL. ROW'S 15 & C EL. 683'-0" NEAR " HOSE CONN. AT 2SA-2-71 2SA-2-75 COL. ROW'S 13 & B EL. 683'-0" NEAR " HOSE CONN. AT NEAR COL. ROW'S 11 & A 698'-6", 718'-6" & 738'-6" " HOSE CONN. AT EL'S. @. 698'-6"," HOSE CONN. AT COL. ROW'S 13 & A & 738'-6" NEAR EL'S. 698'-6", 715'-6" " HOSE CONN. AT & PURIFICATION ROOM TURBINE OIL STORAGE ROW'S 3 & E EL. 683'-0" NEAR COL. " HOSE CONN. AT ASSEMBLY AT EL. 740'6"" LOUVER VALVE """ 2" 2" 2" (TYPICAL)AT EL. 738'-6"" HOSE CONN. NEAR COL. ROWS 8&D AT 698'-6" & 718'-6"" HOSE CONN'S SA-2-104 1 '2'1"" 2" COL. ROW'S 5 & B EL. 683'-0" NEAR " HOSE CONN. AT SA-2-71 1 '2'2'AT EL. 758'-6"" HOSE CONN. EL. 752'-0" ASSEMBLY AT "LOUVER VALVE NEAR COL. ROWS 7 & A EL'S 698'-6" & 718'-6"" HOSE CONN'S AT COL. ROWS 5 & A & 738'-6" NEAR EL'S 698'-6" & 715'-6"" HOSE CONN'S AT 2" 2" EL 698'-6"" HOSE CONN. AT EL 696'-6"" HOSE CONN. AT SA-3-2 2SA-2-133 2SA-2-133 D6 D.G BLDG. D5 D.G BLDG. 11168 PI 11167 PI 21122 P 11170 PI WITH VALVE & COUPLING. DENOTES HOSE CONNECTION DENOTES FLEXIBLE CONNECTION DENOTES CONTAINMENT PENETRATION No. DENOTES RESPIRATOR AIR STATION 19 F EL.737'-0" 5 1" 19""" 1" 2""" 1" P.R.V.SA-41-1 11635 PI 31739 CV 2" 2" SA-38-6 SA-76-1 F SA-38-2 PRESS GAGE 2" 1 " ROWS 3 & E EL. 718'-6"""" 3" 6" DWN: DMN 7-29-08 CHK'D: TS 7-29-08 AS BUILT-FILMED: 8-08 76 MOD#: EC-12264 CHANGED DUPLICATE VALVE ID SA-80-1 TO SA-71-2 GRID E-2

PER DRR PI-08-046 DWN: KJF 9-21-09 CHK'D: BAW 9-21-09 AS BUILT-77 MOD#: EC-13858 REMOVED CONTINUATION OF LINE AFTER SA-16-1 GATE VALVE AND ADDED LINE CAP PER DRR PI-09-167 APP'D: CMR 9-21-09 DWN: JEK 11-16-09 CHK'D: DB 11-23-09 AS BUILT-78 MOD#: EC-14629 ADD DETAILS 1 & 2, SAFETY CLASS FLAGS, NOTES & LEGEND. 04NS15 PER DRR PI-09-233 APP'D: CMR 11-23-09

@ LOC. E-3 SEE NF-39253 RESIN DISPOSAL BLDG.

1 " TO COND. POLISHING & DWG. NO. NF-39241-8 TREATMENT SEE ORD. BY ILLINOIS WATER @ LOC. D-2 SEE DWG. NF-39253 No. 124 & 125 AIR COMPRESSORS 3" FROM STATION NF-39228-5 (TYP) MAINT. DEVICE SEE FIRE PROT. SYS. AIR DIESEL GEN. ROOM NF-39262-1 & 2 NF-39305-1, 2, 3, 4 & 5 REFERENCE PIPING DWGS: NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III 6.7. 758'-6" EL.NSR IB III C2 C2 III IB NSR C2 III IB NSR 19 NSR III IB C2 19 SA-17-2 SA-17-1 2SA-17-1 2SA-17-2 DETAIL "1" DETAIL "2" AT GRID B-8 AT GRID B-5 WHERE NOTED OTHERWISE. ALL PIPING TO BE QA TYPE III EXCEPT 2SA-55-2 DWN: KJF 1-11-11 CHK'D: BWK 1-13-11 AS BUILT-79 MOD#: EC-17078 CORRECTED VALVE ID FROM 25A-55-2 TO 2SA-55-2 AT DRAWING COORDINATE E-10.

PER DRR PI-11-003 APP'D: CMR 1-14-11 SA-30-3"81"" DWN: DB 12-22-15 CHK'D: RLM 1-5-16 AS BUILT-80 MOD#: EC-21830 ADDED VALVE SA-30-3 @ GRID LOC G-2

PER DRR PI-15-211 APP'D: KJW 1-6-16 SA-2-100"81" DWN: MEA 4-6-17 CHK'D: RSA 4-6-17 AS BUILT-81 MOD#: EC-16559 VALVE ID ERROR 2SA-1-8 CHG TO 2SA-1-2; DEL'D "HUMP" FROM AIR LINE; ZONE D6, D7 BETWEEN VALVES EXTENDED AIR LINE TO REMOVE "TEMP CAP" ADDED ID SA-2-100; PER DRR PI-17-071 APP'D: DB 4-6-17 PI REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4410 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 81 39243 NF-39243 N F-NSP GENERATION CAD NF-39243.DGN FLOW DIAGRAM STATION AIR SYSTEM UNIT 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 603000001331 CAD FILE: FIGURE 10.3-16 REV. 35 U10316.DGN 2SA-38-7 2SA-31-2 COPPER TUBING 2SA-15-2 2SA-74-2 2"-" JB JB JB JB JB JB 86 85 84 29 CP-51-2 1" 1" 1" 1" 1" 1" 1" 1" 1" 1" SA-31-53 RESIN DISPOSAL RAD WASTE BLDG BLDG"" 28 1" 1" 1" 1" 1" 1" 1"""" 1"" 2" RAD.WASTE BLDG.AUX.BLDG.SA-32-5 JB JB 30 SA-36-2 TO 121 ADT EVAPORATOR 27 JB 41 42 CD CD 34004 34009"-"" SA-91-5 SA-32-25 SA-24-1 TO UNIT 2 FUEL TRANSFER CONTROL PNL. 1" SA-53-1-" PI 11165 SA-39-3 1" 1" SA-39-2 P 21105 PI 41016 04 PI 41016 03 P 21103 SCREENHOUSE C OPP E R C ARBON STEEL TURBINE BUILDING 1" 2" 2" 1" 1" SA-38-10 JB JB 14 13 2" 1" JB 1L SEE SA-58-1 SA-39-1 2" C OPP E R SA-77-1 JB 17 1" 1" 1" 1" 1" 2" 2" 1""" SA-38-9 SA-58-2 JB 18 JB 16 JB 15 SA-59-1 JB 25 JB 24 1" 1" 1" 1" 2"" TEST SA-31-133 SA-38-7 1" JB 23 COPPER TUBING C ARBON STEEL INSIDE CONT'MT OUTSIDE CONT'MT 2" CONT.SV-33282 CV 31741 20 UNIT #1 SA-31-2 SA-15-6 SA-74-2 PI 11125 2" TO HOT CHEM LAB. SA-58-5 INSIDE SHIELD WALL OUTSIDE SHIELD WALL CONT.SV-33281 CV 31740 SA-31-52 SA-55-12 STAINLESS STEEL SA-38-8 COPPER TUBING 2" 2" 1" JB 22 SA-58-4 SA-40-2 SA-32-18"-" 1" C OPP E R C.S.SA-24-2 2" JB JB JB 20 21 19 1" SA-59-2 SA-60-1 SA-32-20 SA-53-44"-"-""" 2"" 1" 1" 1""" JB 12 SEE SA-32-24 CV 31148 JB 87"" SA-85-1" CV CV 39169 39069 1" 1" SA-33-38 W S T.N E U T R.B LDG." TO HOT CHEM. LAB WATER CHILLER PKG. "" 1" 1" 1" CP-51-1 SA-33-7 TO FILTER DEMIN AREA (JB-80, JB-81) SEE " SA-53-42 LI LI 18005 18004 LT LT 24139 24138 PS 16460 A 47023-0502 LOW PRESS. HDR. SOL. CLOSE MV-32314 @ 80 PSI 2"" SA-70-1 SA-33-5 2" FP-117-1 SA-71-1 T O FP-104-1 T O S E R V/C O M P B LDG ADD T N PS PS PI 11554 16238 16239 3" SHUT-OFF STA. AIR AT 85 P.S.I. CLOSE MV-32318 LI 18006 LT 24140 LI LT 18007 24141 JB JB 8 9 3-SA-20 PI PS 18702 17702 SV-33299 CV 31998 PRV.-" AF-292-1 3" PI F1 41234 ACCUMULATOR FT 23180 P 21106 2"-" 48137 PI 11120 FE 27218 SA-91-1 SA-91-3 SA-91-2 TO CV-31962 THRU CV-31965 2" 1" JB 1 SA-33-6 COPPER CS SA-38-1 2" 2"" SA-25-1 CD 34049"" 1" 2" JB 10 1" SEE SA-58-3 UNIT 1 CONTROL ROOM PANEL E-1 SA-60-2 SA-39-4 SA-32-17 SA-40-1 SA-63-2 TEMP.CONN.JB 33 1" 1""" 2" SA-32-16 SA-38-4" 1" 2" THRU TC-26024 TO TC-26016 SA-53-43 SA-38-5-" C.S.COPPER C.S.C OPP E R P 21125 PI 11449 PI C2 SA-16-2 SA-16-3 1-HC-1 1-HC-10 1" 2" 2" TO REACTOR BLDG. INSTRUMENT AIR SERVICE HEATING BOILER AREA SA-33-4 SA-33-40 JB JB JB JB JB JB 3 4 5 6 7 2 1" 1" 1" 1" 1"" CV 31188 PI 11123-" SA-35-2 TO COLD CHEM. LAB. " SA-33-3 SA-31-51" FOR HDR DWG TO TURB. SA-23-2 SA-23-1 1" TYP TO SV-33115 & SV-33116 INSTR AIR SERVICE " SA-62-5 SA-117-4 UNIT #2 P 21108 PI 41529 04 PI 11166 1" 1"-" JB65 2SA-53-1 1" 2SA-39-2 SCREENHOUSE C OPP E R C ARBON STEEL C OPP E R 2SA-39-1 1" CONT.SV-33284 CV 31743 2SA-31-133 " TEST 2" C ARBON STEEL INSIDE CONT'MT OUTSIDE CONT'MT INSIDE SHIELD WALL OUTSIDE SHIELD WALL 20 CV 31742 CONT.SV-33283 STAINLESS STEEL 1" 2" 2SA-64-1 2SA-38-8 2SA-32-17 JB 70 COPPER TUBING 1" P 21104 PI 41529 03 PI 11126 JB 72 1""""-" 2SA-63-1 2SA-65-1 2SA-31-1 JB JB JB 73 71 74 1" 1" 1" 2" 1" JB 34 UNIT 2 CONTROL ROOM PANEL E-2 """"" 2SA-40-1 TO INSTR WORKSHOP 2SA-20-1 2SA-32-16 JB 26" 1" 2" 2" 1" 1" 1" 1"" P 21126 PI C2 PI 11450 JB 88 JB 227 POST LOCA HYDROGEN 2SA-33-5 2SA-33-6 1" 1" 1"#122#121 HYDROGEN RECOMBINER CONTROL PANELS 2" 2" 2" 1" 1" 1" 1" 1" 1" JB JB JB JB JB 228 229 45 230 31 JB 32 FOR HDR. DWG TO AUX BLDG JUNCTION BOXES SEE PS 16461 78 PSI A 47023-0502 2SA-38-12 2" 2" 2" 1" 2SA-38-13 JB 62 2SA-33-4 1" 1"" TO CV-31966 THRU CV-31969 JB 64 1" 1" 2" 2CP-51-1 TO FILTER DEMIN AREA (JB-82 & JB-83) SEE JB JB JB 58 60 59 2" 1" 1" 2SA-38-11 2SA-69-2 2SA-69-1 2SA-16-2 2SA-16-3 1-2HC-1 1-2HC-10 1" 1" 2" 2" 1" 1" 1" 1" 1" 2SA-38-15 2SA-38-14 2SA-18-1 2SA-33-3 2SA-38-9 JB 56 PI 11124 CV 31368 JB 55 2"-" 2SA-38-10 JB 57 2SA-34-1AUX. B LDG.ES 46139 2SA-38-4 2SA-38-5 2SA-19-3 2" 1" 2" 2" COPPER C.S." 2" C.S.COPPER 2SA-38-1 PRV SV-33300 CV 31999-" PI PS 18703 17703 ACCUMULATOR 2AF-292-1 SA-12-12 3" 1" 2SA-39-3 2SA-65-3 2SA-65-2 TO #123 AIR COMPR UNLOADER SUPPLY CONT. PNL PI 11122 FT 23181 48637 FE 27219 P 21107-" F1 41519 PI 41529 01 SA-12-19 2" FROM REFERENCE PIPING DWG. NO'S SYSTEM DWG. NO.STATION & INSTRUMENT AIR PPG. UNIT 1 & 2 3-4-5-3 COOLING WATER PPG. LOCA HYDROGEN 1" 3-SA-21 M 332MV 32321 SA-25-2 SA-10-2 3SA-10-1 3166SA-11-1 266-SA-2 SA-7-1 TI 12102*SA-42-1 1 MANUAL BLOWDOWN 11PI 11201 SA-37-1*PT 17070 PS 16240 A 3-SA-13 36'SA-6-1 PI 11115 M MV 32362 SA-12-10 SA-12-9 66SA-11-2 66-SA-4 SA-7-2 TI 12106*SA-42-2 1 MANUAL BLOWDOWN 11PI 11203 SA-37-2*PT 17072 PS 16243 3-SA-13 36SA-6-2 3-SA-13 3A M M 3MV 32318 ES 46131 3MV 32314 ES 46129 M MV 32315 ES 46130 FROM PS FROM PS 2M MV 32363 SA-12-11 366SA-11-3 66-SA-6 SA-7-3 TI 12104 SA-42-3 11SA-37-3*PS 16246 3-SA-13 36SA-6-3 PI 11117 3-SA-13 A LEGEND DENOTES FILTER DENOTES MOTOR DENOTES SOLENOID DENOTES SIGHT FLOW DENOTES FURNISHED WITH EQUIPMENT DENOTES THE EQUIPMENT Q.A. TYPE/DESIGN CLASS ALL PIPING TO BE TYPE IIB UNLESS OTHERWISE NOTED CAT.I DENOTES CATEGORY I VENTILATION ZONE

• F M S DENOTES THROTTLE VALVE PI PT 17071 11202 4101601 4101602 4152902 PS 16481 82 PSI PS 16480 82 PSI NOTE 1 NOTE 1 PNL SEE" SA-117-3 SA-53-40 SA-53-41" SA-117-2 SA-117-5 SA-115-3 1" TO 1" SA-115-2 SA-115-1 SA-116-1" SA-117-1" SA-85-2 SA-89-1" 1" 1" NF-39305-1 NF-39291-1 NF-39216-2 NF-39217-1 SEE NF-39770 SEE NF-39770 SEE NF-39771-4 NF-39771-4 SEE NF-39218 ON NF-39772-2 SEE NF-39772-3 NF-39771-4 (NF-39433-3)

SEE NF-39771-4 NO. 124 & 125 AIR COMP SEE NF-39253-3 SEE NF-39772-1 CONTROL SEE NF-39251 NF-39771-6 & NF-39771-7 CONT SEE NF-39251 SEE NF-39787 BLDG. JB. SEE NF-39772-3 SEE NF-39770 NF-39771-4 SEE NF-39774-1 & 2 INSTR. AIR SERVICES UNIT #1 SCREENHOUSE SEE NF-39774-1 & 2 INST. AIR SERVICES UNIT #2 SCREENHOUSE SEE NF-39771-6 & CONTAINMENT JB'S. FOR HDR DWG. TO AUX. BLDG. SEE NF-39774-3 TURBINE BLDG. J.B. FOR HDR. DWG TO NO. NF-40313 INTERLOCK LOGIC DRAWING SEE NF-39219 33-SA-19 SA-12-8 SA-9-2 (II/2)AFTER-FILTER

1. 122 INSTR. AIR (II/2)AIR DRYER#122 INSTR. AIR 33-SA-17 (II/2)PRE-FILTER
2. 122 INSTR. AIR SA-8-5 SA-8-7 S A-65-2 F 23-SA-19 (TYP.)3"x2" RED CV 31961 SA-118-4 SA-120-2 069-482 SA-118-6 SA-118-5 SA-121-3 SET @ 150 PSIG CHA M B E R A057-033 CHA M B E R B057-034 ID# 026-022 SA-121-4 SET @ 150 PSIG F 069-492 SA-118-12 SA-120-4 S A-118-10 SA-118-11 18588 MUFFLER 18588 333NO. 122 IA DRYER FOR SKID DETAIL P&ID # NX-62925-2 SEE PNEUMATIC PRODUCTS NMC BY*DRAIN FLR.SA-12-7 3-SA-13 18543 DP F SA-8-8 332-SA-20 3-SA-18 SA-12-1 SA-8-1 SA-9-1 (II/2)AFTER-FILTER
3. 121 INSTR. AIR (II/2)AIR DRYER#121 INSTR. AIR 333-SA-16 3-S A-13 SA-8-3 SA-8-4 CV FLR.DRAIN CHA M B E R B057-032 CHA M B E R A057-031 ID# 026-021 SA-120-3 F 069-491 F 069-481 SA-118-8 SA-118-3 SA-118-2 S A-121-1 SA-121-2 SET @ 150 PSIG 18586 18585 SA-120-1 SA-118-1 SET @ 150 PSIG SA-65-1 MUFFLER 31960 C APP E D COU P L ING F O R TE M P. D R Y E R TEST CONN.

DEW POINT SA-123-1*SA-118-9 SA-118-7 NO. 121 IA DRYER NMC BY SA-122-1 FOR SKID DETAIL P&ID # NX-62925-2 SEE PNEUMATIC PRODUCTS TO FEED PMP PNL SEE NF-39241-1 TO BRINE PMP PNL SEE NF-39241-3 PNL SEE NF-39241-4 & 7 ANLYTCL TO VAC. DEGAS PMPS. PNL SEE NF-39241-4 TO WTR. SOFTNR NF-39241-3 T O R O P N L.. SEE N F-39241-5 & 6 N F-39241-6 & 7 T O C D I P N L.. SEE C2 NSR IB IIB IB IIB NSR C2 C2 NSR IIB IB IB IIB NSR C2 P R ESS TANK SEE N F-39241-1 T O #121 P O T A BLE W T R CONT PNL TO WST EVAP NF-39785-1 SERVICE SEE INSTR AIR MNTR PNL LAB SGB TO HOT CHEM ANLZR PNL TO GAS XFER CONT PNL TO UNIT 1 FUEL TO TURB BLDG LOUVER DAMPERS & ADMIN BLDG TC'S SEE PLAN "D" INSTR AIR SERVICE NF-39253-1 @ LOC C-4 L O W P R ESS CONT PNL TO BA EVAP VENT SYS POST TO BA EVAP CONT PNL TO REACTOR BLDG VENT SYS NF-39253-1 @ LOC A-4 SEE NF-39253-3 NO. 124 & 125 COMPRESSORS 3 FROM AIR 2-SA-20 2-SA-25 SEE DWG NF-39243 TO STATION AIR SYS NF-39785-1 NF-39771-5 NF-39771-5 NF-39771-5 NF-39771-4 NF-39771-6 NF-39771-5 NF-39346-14 NF-39785-1 AF-44-1 AF-44-2 NF-39772-3 SEE 2AF-44-1 2AF-44-2 TO RHTR MS SPLY, STOP VALVE BYPASS VALVES AND BLEED STM TO FW HTR VALVES, SEE NF-39772-2 TO RHTR MS SPLY, STOP VALVE BYPASS VALVES AND BLEED STM TO FW HTR VALVES, SEE NF-39774-1 & NF-39774-3 2-SA-7 2-2SA-7 SR NSR NSR SR IC IC IIB 2AF-292-2 AF-292-2 AUX FEEDWATER PPG. NF-39218 NF-39219 NOTES: 3. LEGEND C2 C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III MANUAL C PROCEDURE CHECKLIST. FOR VALVE POSITIONS SEE OPS AND BLEED AIR FROM CONTROL VALVE. 3-WAY VALVE TO ISOLATE ACCUMULATOR

1. 4. FOR SYMBOLS SEE XH-1-105, NF-39214.(I/I)101-061 201-061 IIB III DPI DPI DPI DPI IIB 20 DENOTES CONTAINMENT PENETRATION NO.

CONTROL PNL. TO EVAP.LAB ROOM TO HOT INSTR. FOR FUEL ASSEMBLY CLAMP TO ENGAGE-DISENGAGE INFLATABLE SEAL TO REACTOR MANIPULATOR CRANE TO AIR HOSE CONN. FOR PRESS LOW 53-12-2-01 UNIT 2 53-12-1-01 UNIT 1 ACCOUNT NO.(II/2)PRE-FILTER

1. 121 INSTR. AIR (II/2)AIR RECEIVER
2. 121 STATION SET @ 115 PSIG SAFETY REL. VLV.

-0503 47023 PRESS.HIGH (II/2)AIR RECEIVER

1. 122 STATION SET @ 115 PSIG SAFETY REL. VLV.

-0503 47023 PRESS.HIGH (II/2)AIR RECEIVER

1. 123 STATION SET @ 115 PSIG SAFETY REL. VLV.

-0503 47023 PRESS.HIGH PSI 78 24443 LT 24442 LT S V-37029 S V-37030 S S PS 16258 PI 11555 80 PSI MV-32315 AT ISOL. CLOSE LOW PRESS. HDR. SA-103-16"-" TEST CONN DEW POINT" SA-122-2 SA-123-2 DWN: DB 9-25-12 CHK'D: GTL 9-26-12 AS BUILT-92 MOD#: EC-581 ADDED DEW POINT TEST CONN SA-123-2, & BALL VALVE SA-122-2 @ LOC G-11.

PER DRR PI-12-184 APP'D: CMR 9-26-12 1 MANUAL BLOWDOWN

• SA-60-1"" D D BF BF SA-8-14 SA-11-7 SA-11-8 SA-8-16 CHECK VALVES: SA-11-1, SA-11-2, SA-11-3, 5. THE INTERNAL PARTS ARE REMOVED FROM NOTE 5 NOTE 5 NOTE 5 TURBINE BUILDING SA-76-3 SA-113-8PI SA-76-4 SA-113-9 11116SA-76-5 SA-113-10 (D-11)FROM NF-39244-1 (F-11)FROM NF-39244-1 (A-11)FROM NF-39244-1 "95" CONSTRUCTION ISSUED FOR INSTR. AIR COMPRESSOR REPLACEMENT

N/A PE# N/A MOD#: EC-22499 94 REVIEWED: SH 05-13-14 AS BUILT-MOD#: EC-22499 DWN: MEA 3-26-15 CHK'D: MJL 4-1-15 DWN: JMT 4-4-14 CHK'D: CDZ 4-4-14 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 94 , DRR PI-15-043 REV. 94 PER INCORPORATED A/E's PE CERT: APP'D: KJW 4-2-15 APP'D: EH 4-4-14 CONSTRUCTION ISSUED FOR AT 122 1A DRYER. N/A PE# N/A MOD#: EC-22499 REVIEWED: JJP 5-13-14 DWN: JMT 5-13-14 CHK'D: CDZ 5-13-14 PE CERT: APP'D: JRS 5-13-14 INSTR. AIR COMPRESSOR REPLACEMENT. ADDED NOTE

5. REMOVED NOTE 2 REF AS BUILT-INCORPORATED ECN-25216 DWN: JE 12-19-13 CHK'D: RLM 12-20-13 AS BUILT-93 MOD#: EC-23209 ADDED VALVE SA-91-6 &

REMOVED REFERENCE TO SZ-33001 & SV-33002 AT LOC C-4. PER DRR PI-13-260 APP'D: CMR 12-23-13 SA-91-6 2. SEE NOTE 2 FILTERS ARE ABANDONED IN PLACE. OLD #122 INSTRUMENT AIR DRYER DWN: JEK 10-20-16 CHK'D: BJS 10-21-16 AS BUILT-95 MOD#: EC-17065 CHANGED VALVE NO. AF-45-1 TO CV-31994 F/R AND 2AF-45-1 TO CV-31999 F/R AT LOC D-4 & D-9. PER DRR PI-16-229 APP'D: DB 10-21-16 CV-31998 F/R "95" CV-31999 F/R REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 400 5 6 4410 8320 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 95 39244 NF-39244 N F-NSP GENERATION CAD NF-39244.DGN FLOW DIAGRAM INSTRUMENT AIR PIPING UNIT 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 603000001331 CAD FILE: FIGURE 10.3-17 REV. 35 U10317.DGN VENTED TO OUTSIDE RUPTURE DISC ZX-9-6 ZX-16-2 ZX-9-5 ZX-17-1 ZX-9-8 ZX-9-4 ZX-9-3 ZX-16-1 PI 18449 8" ZX-10-59 ZX-1-36 FS VENTED TO OUTSIDE RUPTURE DISC ZX-17-2 PI 18448 8" ZX-10-58 10" ZX-1-35 FS ZX-9-10 18468 18471 D D ZX-19-1 14-ZX-71 14-ZX-6 ZX-27-1 ZX-27-2 ZX-33-1 ZX-31-13 ZX-27-3 ZX-27-5 ZX-31-1 D ZX-27-7 ZX-27-6 ZX-28-2 V ZX-33-2 ZX-32-2 ZX-28-1 ZX-31-14 ZX-1-74 ZX-1-55 ZX-1-61 ZX-31-2 ZX-31-5 ZX-31-4 D ZX-31-9 D ZX-31-8 D ZX-4-37 ZX-31-3 V ZX-35-4 ZX-31-7 D ZX-11-15 ZX-11-14 ZX-35-3 ZX-4-23 ZX-4-25 ZX-33-3 ZX-4-36 ZX-4-35 ZX-31-12 ZX-27-4 V ZX-34-1""""""" 12" ZX-9-1" ZX-9-2 ZX-13-20 ZX-13-21 ZX-4-24"12-Z X-312-Z X-78"" ZX-1-51 ZX-1-53" ZX-1-54 ZX-1-60""" ZX-9-7 ZX-9-1212-Z X-5 ZX-27-9" ZX-32-1 V" ZX-4-30 16842 V ZX-31-11 ZX-4-34 ZX-11-16 ZX-11-17 ZX-4-32 16843 ZX-4-33 18390 FI CL-114-116-Z X-128 12" ZX-35-2 V ZX-35-1"" ZX-4-28 ZX-4-38 V ZX-31-10""""" ZX-4-27 ZX-4-26 4" 4" 4" 4"" ZX RETURN CL RETURN CL SUPPLY V D D CORROSION RACK"""" ZX-4-31 D ZX-31-6" 2" ZX-9-9 V PI PI PI 18534 18536 18537 ZX-28-3 V" 1" 1" 1" 1" PI 18443 ZX-10-53 FS 18470 V" 12-ZX-2 PI 18442 ZX-1-33 D" TI 12426 TI 12425 ZX-10-57 ZX-1-40 FS 18473" 12-ZX-1 PI 18446 ZX-10-56 ZX-1-34 D" TI 12429 12-ZX-78 12-ZX-77 PI 18525 PI 18526 2-ZX-154 2-ZX-156 2-ZX-153-Z X-1 1-Z X-1 1-Z X-1 ZX-27-8 Z X-1-31 D TI 12428 ZX-10-55 Z X-1-32 D" 12424 ZX-10-51 TI 12423 ZX-21-1 3-ZX-133 3" 3" V" ZX SUPPLY""" 8" 8" 8" FIS V OVERPRESSURE RELIEF FILTER SUPPLY RETURN SUPPLY" 18394 FI" TRN A TRN B " THRD. PLUG ZX-1-38" ZX-1-39" TEE STRAINER ZX-1-30 D" ZX-1-29 D" BACKFLOW PREVENTER V" V" V TC TC D" V V" V D 12-ZX-132 ZX-1-59 ZX-1-57""""" 2" DB 3-13-03 AS BUILT RELOC. 3" DEMIN LINE REVERSED FLOW ARROWS AS SHOWN.MOD#: 01ZX01 ADDED LINE# 14-ZX-161. MOD#: 01ZX01 AG TO STRAINERS. FILMED 2-04 DRAWING REVISED AND 00000 TCV PER DRR PI 002 MOD.#: 01ZX01 CHK'D. R.K.C 6-9-03 DWN: DB 6-9-03 DWN: DB 9-14-03 CHK'D: R.K.C. 11-2103 VENTED TO OUTSIDE RUPTURE DISC ZX-9-6 V D ZX-35-3"12-Z X-13012-Z X-14412-Z X-312-Z X-78 12-ZX-77 12-ZX-4""""""" ZX-4-29 PI PI 18527 18528 ZX-4-34 12-ZX-131 V V" ZX-4-26 4" 4" 4"" D 2""" ZX-4-31 2-Z X-155 V PI 18535" V ZX-10-52 PI 18447 ZX-10-57 12-ZX-1 D TI 12430 12-ZX-78 2-ZX-154 2-ZX-156 2-ZX-153 1-Z X-1 1-Z X-1 D" ZX-10-55 TI 12427 TI ZX-20-1 3-ZX-133 V 2" Z X-1-37 8" FIS DPS 16844 2" V DPIS 16845 A 47022 0207 BACKWASH IN BACKWASH OUT OVERPRESSURE RELIEF FILTER SUPPLY RETURN SUPPLY" BACKFLOW PREVENTER V V TC V" V D" 12-ZX-132 ZX-1-59 ZX-1-57"""""" DB 3-13-03 AS BUILT 14-ZX-161 AG ADDED EQUIPMENT NO. REDRAWN FOR CLARITY. DWN: R.K.C 6-9-03 CHK'D: R.K.C. 6-9-03 CONN FLSH 10" V FILTER SYSTEM CONDENSER 258-081 CHEMICAL INJECTION F-1 NF-86172-3 158-081 T URB B LDG B LDGAUX 6 PLCS)(TYP TURB AUX BUILD BUILD TURB AUX BUILD BUILD 39450 CV 39852 CV 39850 CV 39848 CV 39846 CV 39847 CV 39845 CV 39851 CV 39849 CV 39451 CV 00000 TCV}NOTES: 3. DENOTES CATEGORY I

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

2. NF-39241 DE SYSTEM FLOW DIA. UNIT 1 & 2 NF-86172 ZX SYSTEM FLOW DIA. UNIT 1 & 2 NF-39216 CL SYSTEM FLOW DIA. UNIT 1 NF-39217 CL SYSTEM FLOW DIA. UNIT 2 C-7 NF-39216-3 B-4 NF-39217-1 F-9 NF-39241-8 MONITOR 053-711 FILTER FEEDER/CHEMICAL 069-442 FILTER 121 S MEDIA EVAPORATOR 275-011 ZX CHILLER 21 21 OIL HX 069-441 FILTER 121 N MEDIA CONDENSER EVAPORATOR 11 OIL HX 175-011 ZX CHILLER 11 145-811 11 ZX PUMP 245-811 21 ZX PUMP TEE STRAINER 158-081 069-451 121 E BAG FLTR 069-452 122 W BAG FLTR MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES VENTILATION ZONE REFERENCE DWGS V V CONN FLSH CONN FLSH CL-118-14 CL-118-13 C3 NSR IC IIB LEGEND C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. NSR C3 IC IIB DWN: LAB 7-9-09 CHK'D: BAW 7-14-09 AS BUILT-76 MOD#: EC-11686 REV'D TO CORRECT FOR CONTINUATION REFERENCE DRAWING NO.'s

PER DRR PI-09-104 FILMED: 8-09 REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT PER DRR PI-10-087 MOD#: EC-14553 DWN: JEK 5-4-10 CHK'D: DB 5-12-10 APP'D: CMR 5-12-10 REVIEWED: WJI 5-12-10 77 SAFETY CLASS DESIGNATIONS. ZX-1-28 DWN: LAB 10-13-11 CHK'D: RWS 10-18-11 AS BUILT-78 MOD#: EC-18734 CORRECTED 11 PURGE UNIT EVAPORATOR VENT VALVE FROM ZX-1-41 TO ZX-1-28.

PER DRR PI-11-193 APP'D: CMR 10-19-11 "79" OIL RETURN OIL SUPPLY "79""79" DWN: MEA 3-15-16 CHK'D: TEO 4-25-16 AS BUILT-79 MOD#: EC-24952 REMOVAL OF PIPING AND EQUIPMENT

PER DRR PI-16-115 APP'D: DB 4-29-16 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 12-19-06 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4400 1100 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT 01ZX01 R.K.C. NORTHERN STATES POWER COMPANY 79 86172-1 NF-86172-1 N F-NSP GENERATION CAD NF-86172-1.DGN FLOW DIAGRAM CHILLED WATER SYSTEM AUX BLDG & CONTAINMENT UNITS 1 & 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's.

603000001331 CAD FILE: FIGURE 10.4-1A REV. 35 U10401A.DGN 3-C L-26 O 2-C L-1 O 1 2-C L-126 2-C L-1 O 124-C L-12 2-C L-128 SV-33133 SCREEN WELL M M 18-CL-13 3O-CL-13 2-CL-15 3O-CL-23 2O-CL-5 2-CL-128 42-CL-1O3 2-C L-1 O 5 3O-CL-1OO CONTROL 1-2CL-5-2CL-7 1-2CL-4-2CL-4-2CL-7 1-2CL-6 11-CL-11 2-CL-1O5 22-CL-1O2-CL-1O2-CL-1O5 M 2-CL-215 44182-C L-22 2-CL-27 2-CL-26 2 O-C L-6 M M M T 1-2CL-7 2SCREEN WASH 11-CL-105 11 12 22 2-C L-128 2222421-CL-9 4-CL-9 6-CL-272 1612-CL-1O1 3O-CL-16 2O-CL-7 24-CL-1624-C L-1618-C L-16 2-C L-21 4-CL-29 2O-CL-4 3-C L-113 32''SCREEN WELL 'TO PUMP'2-CL-264 2-CL-1O3 1224-CL-1O4 21-2CL-3 2-CL-1O6-2CL-7 44-CL-8 4-C L-7 3O-CL-2O'1'13-CL-9 2-CL-1O5-112-CL-1O2 2O-CL-3 1-CL-8 2-C L-127 3O'''''''''''-2CL-5 2-2CL-7 1-2CL-7 111'''-CL-129-CL-129-C L-129-2CL-48-2CL-48 1" 1" 1" 1"'269-352""""" 069-421 069-422-2 C L-146 169-351 1-CL-285 1-CL-285 169-352 1-CL-120 1-CL-102 12-C L-107 1-CL-102 1-C L-120 C W-17-9 CL-117-2 CL-117-1 CW-17-10 CL-116-3 CL-84-2 CW-19-9-C L-15 C L-19-29-CL-15 CL-20-28 CL-84-4 CL-19-28 CL-19-16 C L-116-4 CW-19-8 CL-84-1 3OCW-64-8-CL-14O 2CL-37-4 CW-17-8 31655 CV 2CL-37-2 22 21 2 C L-37-3 182CL-37-1 CW-64-7-CL-139 CW-19-15 SV-33346 SV-33345 31654 CV CW-19-14PS 16009 CONT 2-CL-88 46509 CS 32037 MV CL-20-36 CL-20-35'2CL-42-2 2CL-39-1 1" 2CL-43-1 CL-20-29 2-CL-14 CL-19-17-CL-88 PI 11025 2CL-42-1 PI 11545 CL-94-12 2CL-68-1 CH-17-2 2CL-33-1 3O-2CL-1 CL-70-8 CL-99A-1 ES 19327 CL-70-7 2C L-94-7 PI 18783 PI 18784 PI 18785 CL-19-27 SV-33134 S PS 16101 PI 11499 C W-15-2 2CL-39-2 2CL-43-2 PI 11024 2CL-80-1 2CL-53-1 CL-139-2 CL-140-1 CL-138-1 CL-139-1 CL-138-2 CL-138-4 CL-138-3 FE 18063 PI 11502 PI CL-106-1 CW-17-12 32036 MV PI 18786 PI 18787 CW-17-7 CL-20-42 CL-20-38 CW-17-6 PI 18791 PI 18788 CL-141-1 CL-127-6CL-127-4 1-CL-287-CL-289 CL-127-5 1-CL-287-CL-288 M 2-C L-18 2-CL-25 CW-64-6 31653 CV 12 SV-33344 CONT CW-17-5-CL-138 CL-37-4 CL-37-2 CW-19-2 PS 16002 M 2-CL-24 2-C L-17 4-CL-28 18CW-64-5-CL-137 SV-33343 31652 CV CW-19-1 CL-37-3 CL-37-1 11 CL-130-2 PS 16196 CL-75-1 METER WTR CL-110-1 CL-103-3 FE 18408 CL-103-1 CL-109-1 CL-103-2 2-CL-88 46519 CS 2CL-80-6 2CL-80-5 CW-75-2 1-2CL-146 1-2CL-146 PI 11731 CL-48-4 PI 11730 DPS 16442 ES 19326 CL-48-5 32055 MV M CL-19-23 A 47520 0401 A 47020 0408 DPI 11649 CL-19-24 CL-19-32 PI 11189 CL-19-25 CL-19-26 CL-84-3 S SV-33684 2CL-67-1 CL-20-33 S SV-33609 CL-20-32'CL-67-1 CL-104-1 CONT 121 STRNR PI 11185 C L-48-3 C L-19-31 PI 11962 DPS 16108 PI 11961 ES 19400 CL-102-2 S SV-37149 CL-111-1 C L-102-1 CL-19-30 39149 CV PS 16195 CL-105-1 CL-112-1 32278 MV CL-48-6 CL-110-2 PI 11188 21 CW-54-53 CW-54-52 CW-54-51 CW-54-50 CW-54-1 CW-54-2 CL-83-4 CW-54-4 CL-54-42 FS 16807 CL-54-43 CL-54-49 CL-54-48 CL-54-47 C L-54-46 VLV (TYP)FLOW CONT CL-54-41 CW-54-3 CR-22 PI 11187 PI 11372 PI 11371 FS 16806 FS 16804 FS 16805 CW-54-5 CW-54-6 CL-83-3-CL-1O5 CW-54-8 CL-54-40 CL-54-39 PI 11186 C L-107-1 CR-12 CW-54-10 CW-54-9 CL-83-2 CW-54-7 CL-54-38 CW-54-31 CL-54-36 CL-54-35 C L-54-37 CW-54-12-CL-1O5 CL-54-13 CW-54-14 CL-83-1-CL-1O5 CW-54-16 11 CL PMP GLND SL TO CL-54-33 CW-54-11 CL-54-32 C L-54-34 CW-54-30 CR-11 CW-54-15 CL-107-2 CL-108-1 121 FIRE PMP GLND SL TO CL-52-7 TEST PRESS CL-50-4 2-CL-105 2-2CL-8 CL-70-6 CL-70-5-2CL-6 CL-98-4 CL-98-5 CL-94-8 CL-94-13 CL-56-1 CL-47-1 CL-47-4 CL-47-2 CL-47-3 CL-44-1 CL-98-3 CL-94-6 CL-94-11 CL-98-1 CL-94-4 CL-94-9 CL-55-11 CL-98-6 CL-94-16 PI 11030 CL-101-1 CL-45-1 CL-98-2 269-351 PI 18790 2CL-25-1 C W-76-2 31457 CV FS 16899 70350 A 32 A 47520 0504 (I/1)122 (I/1)121 CL-61-2 A 47020 0504 PS 16099 CONT WASH SCREEN S CW-17-11 M 46118 CS 46046 CS 32035 MV 32034 MV PI 11498 PS 16259 CONT CL-53-2 PI 11544 PI 11023 C L-80-2 CL-43-3 CL-39-3 CL-130-1 CL-61-1 CL-31-2 70300 32 A FS 16895 PRESS LOW 31423 CV PI 11022 CL-39-2 CL-43-2 CL-80-1 CL-53-1 24" CL-33-1 CH-17-1 CL-68-1 PI 11543 PI 11021 C L-42-1 CL-43-1 CL-39-1 C L-94-10 CL-94-5 CW-76-1 CL-80-5 CW-75-1 C L-25-1 CW-15-1 PI 18789 CL-135-1-CL-286 CL-136-1 CL-127-7 CL-127-8 CL-127-9 PI 18781 PI 18780 CL-128-4 CL-127-3 CL-128-3 CL-128-6 PI 18782 CL-128-5 CL-129-1 CL-128-7 CL-127-2 CL-128-1 CL-42-2-CL-285 CL-80-6 CL-128-8 CL-128-9 CL-127-1 C3 NSR"-C L-287 WELL SCREEN 1" 1" V V COMPR SCREW CL-103-27 145-231 145-232 245-231 245-232 CL-54-55 CL-54-54 CL-54-51 CL-54-53 CL-54-52 CL-113-6 C L-103-9 1" 1" 1" 1" A B 1"-CL-14 2-CL-2018-C L-2 O 2-CL-28 2" 3-C L-2 O 18-CL-20 2'-2CL-147 A A B CL-113-3 CL-113-7 258-012 2-CL-29 18-CL-23 3-C L-23 3-C L-23 2-CL-23 2-CL-23 18-CL-23 258-011 2" A B 1"'-CL-19 1111WELL SCRNHSE SCRNHSE 2-CL-29 SCRNHSE 3"-"SEAL (TYP) -CL-285 1CLG WTR PMP DSL CLG SYS JCKT CLG TO 12 1" CL-173-3 CL-173-2 D (THIS DWG) A-8 PT "A" (THIS DWG) F-8 PT "B" (THIS DWG) D-3 PT "B" 5" 3" 1-CL-2 H-10 NF-39217-1 A-11 NF-39216-2 B-4 NF-39228-1 A-12 NF-39254 D-2 NF-39228-1 REFERENCE DWGS NF-39215 CW SYS FLOW DIA. UNIT 1 & 2 NF-39216 CL SYS FLOW DIA. UNIT 1 NF-39217 CL SYS FLOW DIA. UNIT 2 NF-39254 - CH SYS FLOW DIA. UNIT 1 & 2 NF-39228 FP SYS FLOW DIA. UNIT 1 & 2 D 3GAUGE PRESS LCL)(TYP W FLO SIGHT)(TYP P TRA T VEN 1 1PI " 1-2CL-7 1121 PMP PRIMING EXHT (II/3) 061-011 121 ROTARY SCREW TNK 053-271 VAC PMP 045-411 045-021 045-022 11 (II/3)145-391 117-121 12 121 MDCLP (I/1)045-091 134-051 DSL ENG WTR PMP 12 CLG 067-011 WTR SCRN SFGRD TRVLG 067-012 WTR SCRN SFGRD TRVLG 36-CL-1 INTK CLG WTR 36 EMERG 245-391 (II/3)CLG WTR PMP 21 058-033 (II/3)FLTR WTR STRNR 123 CL-54-50 058-032 STRNR (II/2) FILTERED WTR 122 058-031 STRNR (II/2) FILTERED WTR 121 045-391 (III/3)WTR PMP 121 FILTERED (I/1)CLG WTR STRNRS WTR METER CLG WTR PMP 1" 234-051 DSL ENG WTR PMP 22 CL 245-392 (I/1)DDCLP 22 CIRC WTR PMPS 3158-012 158-011 TNKS HOLDING WTR WELL LO AS WELL SCREEN WTR PMP DSL CLG SYS JCKT CLG TO 22 CLG 145-392 (I/1)DDCLP (TYP 4)INSP PORT (THIS DWG) C-2 PT "A" PMPS SCRNHSE TO 121 GLAND SL CLG SYS PMP DSL JCKT TO CLG WTR M-U WTR 045-761 BSTR PMP WELL WTR 121 1-CL-2 121 JOCKEY PMP 121 FIRE PMP 122 FIRE PMP 045-181 PMP WASH SCRN 121 D D C-4 NF-39215-1 C-4 NF-39215-1 C-7 22 F-7 12 NF-39774 B/U AIR SYS FLOW DIA. UNIT 1 & 2 F-12 NF-39774-1 F-11 NF-39774-1 F-12 NF-39774-1 F-11 NF-39774-1 D-12 NF-39254 PIT 21295 (1P2624A)PT#ERCS (1F2624A)ERCS PT#23121 F PROBAR 2CL-89-1 FE 27321 CONT SCREENWASH CONT SCREENWASH 2 C L-113-6 PIT 21294 4-CL-113 27320 FE CL-128-2 CL-89-1 C3 NSR III IC III IC C3 NSR III IC C3 NSR IC III IC III C3 SR IC IC C3 SR IC IC C3 NSR IC IIB NSR C3 IC III C3 NSR IC IIB C3 NSR IC III IC III C3 NSR C3 NSR IC IIB C3 NSR IC III NSR C3 IC III C3 SR IC IC IC III IC IC SR C3 IC IC C3 SR C3 IC C3 SR IC IC C3 IC IC C3 SR IC C3 SR IC IC NSR C3 III NSR C3 IIB IC NSR IC NSR C3 III C3 IC IC C3 SR IC IC IC IC C3 SR IC IC C3 SR IC III C3 SR-CL-289-CL-287 NSR IIB IC III NSR C3 IC IC C3 NSR III IC C3 NSR III IC C3 NSR III SR IC IC C L-84-5 PIT 21296 (1P2623A)PT#ERCS C L-113-4 """" D-12 NF-39254 CHLORINATORS TO 3" 2CL-115-5 2CL-103-1 217-121 OIL COOLER GEAR PUMP PMP GEAR OIL COOLER SEE NF-39216-2 FOR NOTES AND LEGEND NOTE 7 SEE NOTE 7 SEE V CW-66-2 4" 4" 4" 4" CW-65-1 CW-65-2" D CW-66-1 PROBAR C3 IC NSR IIB C3 IIB IC NSR III NSR IIB IC C3 NSR C3 IIB IC IIB IIB IIB IIB IIB 2-CL-214 C L-115-5 NSR IIB IC C3 CL-115-6 C L-103-34 CL-103-33 PRESS LOW 23121-HI-ISOL 23121-LO-ISOL 23121-EQLZG F 2-C L-28 IC NSR C3 4-C L-28 III 23120 23120-LO-ISOL IC C3 NSR IIB IC C3 NSR IIB MFLD 23120 MFLD 23121 23120-HI-ISOL 23120-EQLZG 24-CL-13 1-CL-3B 1-CL-3A CL-113-9 (1P2625A)ERCS PT#(1F2625A)ERCS PT#MDCLP 121 PS 16847 CL-282-2 SG MDCLP 121 SG PS 16848 CL-282-1 PS 16849 2CL-282-1 SG DDCLP 22 SGDD C L P22 DDCLP 12 DDCLP 12 SG SG DWN: LAB 9-30-14 CHK'D: GTL 10-6-14 AS BUILT-87 MOD#: EC-21558 REPLACED FLOW SWITCHES 16847 & 16864, 16848 & 16862, 16849 & 16863 WITH VALVE CW-15-1 TO NC. 16848 AND 16849. REV'D PRESSURE SWITCHES 16847, SIGHT FLOW INDICATORS & PER DRR PI-14-009 APP'D: CMR 10-6-14 3-CL-296 NSR C3 IIB IC 3-CL-295 WTR TRAP (TYP) AUTO AIR VNT 3-2CL-296 C3 IC IIB NSR C3 IC IIB NSR DWN: LAB 11-18-14 CHK'D: RSA 12-15-14 AS BUILT-88 MOD#: EC-24180 ADDED LINE NO'S & SAFETY CLASSIFICATION TO AUTO AIR VENT WATER TRAP PIPING AS SHOWN. PER DRR PI-14-164 APP'D: CMR 12-24-14 FLR DRN TO III NSR C3 IC IC III C3 NSR IC C3 III NSR DWN: MEA 8-3-15 CHK'D: RSA 8-4-15 AS BUILT-89 MOD#: EC-25706 ADDED PIPING CLASSIFICATION FROM VALVE TO PRESS. SENSOR. PER DRR PI-15-102 APP'D: KJW 8-5-15 DWN: JEK 1-15-16 CHK'D: RLM 1-15-16 AS BUILT-90 MOD#: EC-21242 CORRECTED CW-66-1 FROM VENT TO DRAIN. SHOW PIPE FROM CL-127-7 CONNECTED 24-CL-12. CW-15-1 NOT CONNECTED TO 4" LINE FROM CW-65-1 TO TO RIGHT OF CL-80-5. SHOW PER DRR PI-16-002 APP'D: KJW 1-19-16 DWN: JEK 1-27-16 CHK'D: RLM 1-27-16 AS BUILT-91 MOD#: EC-25161 CHANGED VALVE SYMBOL FOR CL-113-6 & CL-113-7 FROM GATE VALVE TO GLOBE VALVE. PER DRR PI-16-022 APP'D: KJW 1-27-16 CL-147-1 SAMPLE SAMPLE"" DWN: JEK 2-19-16 CHK'D: KB 3-1-16 AS BUILT-92 MOD#: EC-26190 ADDED SAMPLE VLVS CL-147-1 & 2CL-147-1 TO 12 & 22 DDCLP JCKT CLG.

PER DRR PI-16-055 APP'D: DB 4-26-16 135-101 CL-148-1 CW-75-3 CW-75-4 DWN: MEA 2-26-16 CHK'D: DC 4-27-16 AS BUILT-93 MOD#: EC-22358 ADDED VALVES TO DDLP CW-75-3 & CL-148-1 CW-75-4 & 2CL-148-1 WITH DRAIN CAPS. PER DRR PI-16-098 APP'D: DB 5-16-16 235-081 2CL-148-1 DWN: DPB 03-13-17 CHK'D: BPH 03-13-17 AS BUILT-94 MOD#: EC-28229 REMOVE AND REPLACE TEXT CLARIFY BACKWASH LINES EMPTY INTO SCREENHOUSE TRASH TROUGH PER DRR PI-17-041 APP'D: DB 03-13-17 T R A S H T ROUGH (SEE N F-39215-1)T R A S H T ROUGH (SEE N F-39215-1)DWN: DPB 02-06-18 CHK'D: BJS 02-06-18 AS BUILT-95 MOD#: 6DOC00028471 SHOW THE AIR SUPPLY LINES IN BLACK FOR FOUR LOCATIONS.

PER DRR PI-18-009 APP'D: DB 02-06-18 "95""95""95""95" REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 4-11-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 4410 8548 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 95 39216-1 NF-39216-1 N F-NSP GENERATION CAD NF-39216-1.DGN FLOW DIAGRAM COOLING WATER - SCREENHOUSE UNIT 1 & UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. S S F F S S F F F F F V S D D S S T T T T V T D V V 2SCREEN WELL 2O-CL-1 1-2CL-2 1-CL-1O 4-C L-11 6-CL-27O 6-CL-269 LO-2CL-2 2 O-C L-2 4-CL-29 31-2CL-7 3-CL-88 20" 4-C L-1 O 4-CL-3 1-C L-280-CL-280 1-CL-279-C L-279 1" 31 6-CL-27 GROUND UNDER GROUND UNDER D FLOW SIGHT-2CL-7 2CL-128-3 2CL-127-3 2CL-128-4 2CL-129-1 2CL-128-5 2CL-128-6 2 C L-128-12 2CL-128-7 CL-128-17 CL-128-16 CL-128-18 CL-128-15 CL-128-13 CL-128-22 CL-128-12 CL-128-19 CL-128-21 CL-128-20 CL-128-14 CL-127-12 CL-136-2 C L-127-13 CL-127-11 CL-135-2 CL-128-26 CL-128-28 3-CL-88 22CL-128-1 2CL-128-10 2CL-128-2 2CL-127-2 2CL-128-11 2CL-128-8 2CL-127-1 (TYP)--CL-1O2 C L-103-22 C L-103-21 TO WST 2 BD 2CL-127-7 2CL-127-6 2CL-136-1 2CL-127-5 2 C L-128-14 2CL-135-1 2CL-127-4 D-2CL-7 CL-128-27 CL-128-24 CL-127-10 CL-128-23 CL-128-11 CL-128-10 D C L-113-10 2CL-128-9 GLASS SIGHT 3-CL-11 16-CL-1 C L-113-11 CL-103-25 2CL-103-17 2CL-103-16 D D V V 3-2CL-R FL O T N DR NSR C3 NSR C3 NSR C3 2 C L-128-13 C L-128-25 2CL-147-1 1-CL-1O5 CL-103-17 21 CL PMP GLND SL TO CL-103-26 603000001331 CAD FILE: FIGURE 10.4-1B REV. 35 U10401B.DGN A B C D 12 11 A B 11 A B 12-CL-242-CL-244-CL-24514-C L-84-CL-232 10-CL-84 2-CL-68-CL-251 12-CL-68 22-CL-69 12 2-CL-76 2-CL-76 6-CL-78 2-WL-86 2-CL-110-CL-246 4-C L-68 M M-CL-247 4-ZE-5 32-CL-111 24-CL-66 8-CL-99 2-ZE-2 3-CL-11O 2-CL-81 3-CL-81 3-CL-8O 2-CL-8O-CL-243 2-CL-275 24-CL-11O 1O2-CL-7714-C L-11 O 3O-CL-123 4-C L-86 1O-CL-68 4-C L-85 6-C L-67 3-C L-67 14-CL-67 3-CL-11O 1 O-C L-11 O 1O-CL-84 3O-CL-2O 18-CL-8716-C L-67 1 O-C L-8314-C L-83 D C B A24-C L-67 412-CL-67 24-CL-2O 2362-CL-11O 1O-CL-68-CL-25O 22-CL-11O 23-CL-69 11 12 111 12-CL-248 2-CL-248 13 11 1-CL-74-CL-249 2-CL-77 11 12 2-CL-67 2-C L-67 1-CL-67 12 11 4-CL-78 6-C L-78 2-WL-552 1-C L-276 8-C L-97 6-C L-98 2-C L-11 O12-C L-11 O 2-C L-11 O 3-C L-11 O 4-CL-11O 6-CL-111 24-CL-11O 16-ZX-127 4-CL-67 2-C L-96 2-CL-204-CL-78 3-Z W-2 3-ZW-2 3-CL-111 2-CL-74 1'112-C L-114 1-CL-249 1-CL-72 112" 4-C L-110 3-CL-114 2-CL-89-CL-139-CL-137 4-CL-89 4-2CL-89 4-CD-42 2-CL-132 2-CL-133 2111--CL-139 1" UNIT 2 TURB. 2" 2" 2AF-39-1 2AF-40-1 2AF-39-2 CW-77-3 CW-15-5 CW-56-2 CW-19-6 CONT CONT 2CL-115-1 V-2CL-137 2CL-113-1 M CW-19-18 2CL-115-3-2CL-139 32026 MV 1" FUNNEL DRIP MD-2-8 THRU MD-2-1 MD-16-8 THRU MD-16-1" VLVS FUNNEL" DRIP 1" CL-88-48 V C L-88-49-CL-254 C L-88-44 CW-47-2 CW-46-2 SMPL C L-99 G-1 S AF-38-1 2-C L-114 CW-70-5 CL-48-10 C W-20-9 3 44-ZE-15 C L-16-2 CW-24-1 V 32025 MV V CL-115-1 CL-113-1 M CW-27-1 CW-27-3 CW-88-1 V CW-88-3 11 D CW-88-2 CL-69-1 TE-15446 TE-15485 D-CL-252 CW-88-4 CW-19-16 CL-115-3 AF-40-1 AF-39-1 SMPL AF-39-2 CW-27-2 CW-87-1 CW-87-2 CW-27-4 CL-88-46-C L-69 CL-82-1 CL-82-2 D CL-82-3 CL-82-4 CW-88-40 V CL-88-47-CL-69-CL-262 12 11 CL-99C-2 C L-49-3 24-CL-11O 1MD-14-1 PI 11174-WL-87 V" C L-88-45 MD-3-9 M D-12-2 M D-12-3 MD-3-10 LS 16859 LS 16858 LA 16659 A 47008 0606 CONT CL-74-7 HS-101-3 CW-86-3 CW-2-2 CL-74-8 CW-87-3 CW-88-37-CL-69-CL-69 CW-88-39 CW-86-1 CW-87-4 CW-88-36 CW-88-38-CL-69-CL-69 CW-86-2 CW-92-1" CW-51-1 CW-89-1 13 12 CL-51-4 CL-49-2 CW-51-2 CW-89-2 CW-51-3 CW-89-3"" TYP-CL-249 TYP-CL-249 CL-51-5 CL-51-7 CL-51-9 CL-51-6 CL-51-8 M 32371 MV C W-31-1 CW-26-1 CW-25-1 A 47020 0304 32031 MV A 47020 0104 A 47520 0103 23066 F TU 48160 FI 41012 01 FI 41504 01 TI 12013 TE-15442 TE-15495 UNIT-1 UNIT-2 V CL-118-2 21005 P PS 16001 PI 41504 02 PI 41012 02 A 47520 0203 A 47020 0204 D CL-118-1 V CL-36-1 ZX-1-63 TI 12206 TI 12205 TI 12204 PI 11373 FE 27132 DPS 16413 CL-99C-1 CL-9-1 D D ZX-13-22 ZX-13-19 ZX-19-2 CONT D CW-88-41 32032 MV CW-2-1 CW-48-1 CL-81-1 CL-81-2 C L-46-3 TI 12203 CW-32-1-CL-72 CW-49-1 CW-50-1 CW-50-2 CW-50-3 CW-88-5 CW-88-6 CW-88-7 CL-50-6 CL-50-5 CL-50-7 CL-50-9 CL-50-8 CL-50-10'''''CL-48-7 CL-88-42 D CL-54-44 CW-93-1 1"V TE-15394 TE-15395 D D CL-97-2 CL-97-1 CW-87-7 CW-87-8 A 47007 0101 D CL-96-1 CL-99-1 D TE-15396 CL-99-2 CL-96-2''VCW-54-19'CL-32-1 4-CL-67 CW-30-1 CL-46-5 CD-70-1 4-C L-86 CL-48-8 CW-2-4 V V CW-88-10 CW-88-8 CW-88-11 CW-88-9 CW-86-4 CW-8-1 CW-52-13 CW-2-3-CL-233 CW-10-1 CW-88-28 CW-10-2 CW-88-29-CL-234 CW-10-3 CW-88-30-CL-235 CW-10-4 CW-88-31-CL-236-CL-24O CW-14-4 CW-88-35 DPI 11019-CL-239 CW-14-3 CW-88-34 DPI 11018-CL-238 CW-14-2 CW-88-33 DPI 11017-CL-237 CW-14-1 CW-88-32CL-54-4524-C L-11 O CL-90-1 STDPIPE 3OCL-34-1-CL-224 CW-88-20-CL-225 CW-29-2-CL-226 CW-29-3 CW-88-22-CL-227 CW-29-4 CW-88-23 TE-15308-CL-216 CW-88-12 CW-28-1-CL-217 CW-88-13 CW-28-2-CL-218 CW-88-14 CW-28-3-CL-219 CW-88-15 CW-28-4 CW-29-5 CW-88-24-CL-229 CW-29-6 CW-88-25-CL-230 CW-29-7 CW-88-26-CL-231 CW-29-8 CW-88-27-CL-228-CL-223 CW-88-19 CW-28-8-CL-222 CW-88-18-CL-221 CW-88-17 CW-28-6-CL-220 CW-88-16 CW-28-514-C L-11 O CW-23-1 CONT CL-35-2 CW-54-29 CL-35-1 CL-46-4 31360 CV 6-C L-11 O (TYP 8)5-CL-83 CW-88-21 CL-103-16 CL-103-15 CL-103-14 CL-103-13 CL-103-8 CL-103-5 CL-103-6 CL-103-7 (TYP 4)2-CL-85 (TYP 4)2-CL-86 PI 11158 PI 11159 PI 11157 PI 11160 PI 11015 PI 11014 PI 11013 PI 11012 CL-273-2 CL-273-1 CL-113-8 1O-CL-83 CL-173-1-CL-248-CL-248 CL-103-18 3-CL-67 2-C L-67 3-C L-67 18-CL-67 3-CL-67 24-CL-20 4-2ZE-3 12-CL-68 2-C L-69-CL-263 4-CL-20 2-CL-20 2-ZE-14 4-2 C L-20 F 4-CL-20 4-CL-20 F 2-2CL-89 CW-87-5 1O-CL-68-CL-253 DRAIN ROOF V 2-CL-86 (TYP 4) 2-CL-85 (TYP 4) 1O-CL-11O WASTE WASTE WASTE WASTE WASTE WASTE WASTE WASTE D DPI 11020 V 2" 2" 1" HS-442 CL-55-10 CL-99P-1 FLOW SIGHT 6-CL-83 (TYP 8) D 3-ZE-2 CW-28-7 1 O-C L-83 2" D D D3" 39449 CV F-1 NF-39216-1 D-6 NF-39215-1 F-11 NF-39216-3 G-7 NF-396O5-1 E-11 NF-39216-3 C L-94-15 REFERENCE DWGS NF-39215 CW SYS FLOW DIA UNIT 1 & 2 NF-39216 CL SYS FLOW DIA UNIT 1 NF-39216 CL SYS FLOW DIA UNIT 1 NF-39217 CL SYS FLOW DIA UNIT 2 NF-39220 - CD SYS FLOW DIA UNIT 1 & 2 NF-39222 - AF SYS FLOW DIA UNIT 1 NF-39223 - AF SYS FLOW DIA UNIT 2 NF-39244 - SA SYS FLOW DIA UNIT 1 & 2 NF-39249 - WL SYS FLOW DIA UNIT 1 & 2 NF-39601 ZB SYS FLOW DIA UNIT 1 & 2 NF-39603 ZE SYS FLOW DIA UNIT 1 & 2 NF-39603 ZH SYS FLOW DIA UNIT 1 & 2 NF-39605 HS SYS FLOW DIA UNIT 1 & 2 R T MN N O CORROSI" CL-130-3" CS 46040 CS 46038 0304 CS 46041 CS 46767 CS 46433 (III/3)OIL CLRS HTR DRN PMP PNL CLR FW O2 SMPL COND PMP OIL CLRS " N DRAI F ROO CL-99B-2" 2"")(TYP.L FUNNE N DR)(TYP.L FUNNE N DR) 8 (TYP 4 5-CL-8 9--2CL-13 NF-39228 FP SYS FLOW DIA UNIT 1 & 2 2-CL-76 2-CL-76 H2 CLRS 11 & 12 GEN TYP VENT PIPING CLRS PIPING. 11 & 12 EXCTR TYP VENT & DRN NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III 6. DENOTES FURNISHED WITH EQUIPMENT C3 NSR III IC NSR C3 III IC NSR C3 III IC NSR C3 IIB IC C3 NSR III IC III IC NSR C3 III IC C3 NSR NSR C3 IIB IC NSR C3 IC III 8)(TYP 6-CL-84 C-6 NF-39228-1 SPRINKLER SYS SUPPLY TO C-8 NF-396O3-2 UNIT CLRS & AUX AFWP AREA FROM AIR COMPR AREA D-5 NF-39249 TO SGB SYS IIB III (III/3)CLRS GENERATOR BUS DUCT H-8 NF-39605-1 BLT FD PMPS TO HS SYS REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 3-19-07 NTS FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 1 5 6 4400 8540 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 84 39216-2 NF-39216-2 N F-by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSP GENERATION CAD NF-39216-2.DGN FLOW DIAGRAM COOLING WATER-TURBINE BLDG UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 IIB III (III/3)SUMP PUMP TURBINE ROOM D-8 NF-396O3-2 MTR UNIT CLRS FROM FW PMP C-11 NF-396O3-2 PMP MTR UNIT CLRS FROM HTR DRN (III/3)GEN EXCTR CLRS (III/3)UNIT CLRS 11 H2 SEAL OIL (III/3)OIL CLRS FW PMP D-1 NF-39220 COND PMPS FROM (III/3)RESVR OIL CLRS TURB E-H FLUID A-9 NF-39603-2 MNTR UNIT CLR TO COND PMP H-7 NF-39217-1 TURB OIL CLR TO UNIT 2 CL SYS C-7 NF-396O3-2 AFWP AREA UNIT CLRS TO AIR COMPR AREA & BUILD LOC. A-9 NF-39603-3 COIL CL CHLR/FN TO ADMIN D-8 NF-396O3-2 PMP MTR UNIT CLRS TO FW/HTR DRN TNK IIB III C3 NSR IC IIB NF-39601-1 RM A/C SERV BLDG RTRN FROM G BLD B TUR DUMP EMERG B-12 NF-39603-2 MTR UNIT CLRS FROM COND PMP (III/3)GEN H2 CLRS "" 2" H-5 NF-39605-1 FROM HS SYS III IIB-C L-262 III/3 OIL CLRS TURB OIL RESVR NF-396O3-3 AREA CHLR UNIT FROM LAB & SERV H-1 NF-39222 RECIRC LINE 11 & 12 AFWP H-2 NF-39222 TO 11 AFWP SUCT 0 1102 THRU 11017 DPI 10-CL-84 CL-103-20 " CL-103-32 CL-103-31 CL-103-30 CL-103-29 DN L FLSH T SUC CW P AFW A F-20-1 058-141 A 47007 0201 IIB IIB IIB IIB IIB SHELL SIDE CLASS BOUNDARY SR.

7. DDCLP GEAR CLR TUBE SIDE CLASS BOUNDARY C3 A-11 H-4 NF-39223 TO 21 AFWP SUCT TR 42027 110 SV-33115 SV-33116 G-7 R-42 MON RAD 121 TO SMPL R-42 HT EXCH RAD MONITOR 121 DEATR L CONTRO L LOCA L CONTRO L LOCA N DRAI F ROO G BLD B TUR L LEVE H HIG S PRES W LO W FLO T SIGH D GROUN R UNDE S PRES W LO W FLO O HI/L W FLO O HI/L.CONN N DR WTR R CL EXCTR.CONN T VEN WTR R CL EXCTR N DR T COMPARTMEN R CL EXCTR)(TYP.G TUBIN R COPPE"-) (TYP.VENT. WTR CLR H2" G BLD X AU G BLD B TUR N DR N CON E HOS L WAL G BLD B TUR C A/ RM LUNCH G BLD SERV G BLD X AU G BLD B TUR IIB III IIB III IIB III DPS 16411 DWN: JEK 9-23-14 CHK'D: CMR 9-24-14 AS BUILT-80 MOD#: EC-24524 CORRECTED 11/12 BUS DUCT CLG WTR OUTL DPS ID FROM 16413 TO 16411.

PER DRR PI-14-140 APP'D: CMR 9-24-14 CW-29-1 CL-94-14 AS BUILT-81 PER DRR PI-15-018 CHK'D: SBS 2-4-15 DWN: MEA 2-3-15 PER EC-23496. CW-94-14 TO CL-94-14 CHANGED VALVE ID FROM AS BUILT-APP'D: CMR 2-4-15 MOD#: EC-24930 CHK'D: RS 2-4-15 DWN: MEA 2-3-15

2CL-14-1 TO CW-29-1. CHANGED VALVE ID FROM DWN: JEK 3-25-15 CHK'D: MJL 4-1-15 AS BUILT-82 MOD#: EC-22499 ADDED VALVE CW-54-60 AND REVISED DWG CONTINUATIONS PER INSTR AIR COMPRESSOR REPLACEMENT. PER DRR PI-15-043 APP'D: KJW 4-2-15 CW-54-60 (A-2)NF-39244-1 TO IA COMPR (A-1)NF-39244-1 "84" MD-21-8 THRU MD-21-1 DWN: MEA 10-21-15 CHK'D: RLM 2-3-16 AS BUILT-83 MOD#: EC-25416 ADDED ISOLATION VALVES MD-21-1 THRU MD-21-8. FOR GEN H2 COOLER VENT LINES. PER DRR PI-15-131 APP'D: KJW 2-3-16 DWN: MEA 1-3-18 CHK'D: HK 1-3-18 AS BUILT-84 MOD#: 6DOC00028316 NUMERICAL ERROR -28 CHANGED TO -8

PER DRR PI-17-170 APP'D: DB 1-3-18 FE 27185 48112 01516979 CAD FILE: FIGURE 10.4-1C REV. 34 U10401C.DGN 11 M M M M 18-CL-57 18-CL-58 21 18-CL-6O 18-CL-59 12 18M M M M 8-CL-51 8-CL-4O 8-CL-38 8-CL-48 8-CL-56 8-CL-43 8-CL-45 8-CL-53 M M M 24-CL-1O9 12-CL-57 12-CL-2O-CL-19512-C L-1 O 912-C L-1 O 912-C L-64 3-CL-1O9 6-C L-1 O 9 4-ZH-62 4-C L-1 O 9 24-CL-1O9-CL-211 2-CL-274 1-C L-35 6-C L-33 2-CL-35 3-ZE-6 3-ZE-1O 2-2ZE-8 12UNIT 2 AUX 1212-C L-23 1212-CL-59 V-CL-2O6 11-CL-95 1 O-C L-124 2-ZE-9 2-C L-124 1O-ZX-75 3-Z X-146 1 O-Z X-137 1 O-Z X-74 1O-ZX-121 1-CL-54 3-Z X-145 1 O-C L-37 OUTSIDE AUX. BLDG. EMERGENCY DUMP TO GRADE 24-CL-20 2 O-C L-6124-CL-20 2412126612334233642421O-CL-194 181824" 1 O-C L-42-CL-2O7-CL-2O8 1-CL-1O9 2-2ZE-910-C L-60 1O-CL-1O9 8-CL-49 1 O-C L-49 10-ZX-138 1 O-Z X-9 8-C L-42 SHIELD WALL ANNULUS AUX 2-CL-273 2-CL-141 214" 22-C L-118 2-CL-117 2-C L-134 2-CL-119 2-CL-136 2-C L-142 UNIT 2 1166-C L-185-C L-187 1-C L-53 1-CL-42-CL-179 1-CL-53-C L-178 1-CL-48 1-CL-37 1-CL-48 M 46487 CS CL-57-3 32377 MV-CL-166 V CL-21-47 CL-100-1 21230 P PI 41003 04 M 46014 CS V-CL-19O TE-15447 S/CV 48302 TI 41003 03 32133 MV-CL-278 CL-57-5 M 46488 CS 32378 MV CL-21-58 V 21232 P PI 41005 04 CONT CONT 46015 CS CONT CONT M 32139 MV V CW-21-2-CL-189 TE-15449 S/CV 48304 TI 41005 03 CL-57-4-CL-15O V CL-21-46 M 46489 CS 32379 MV CL-100-2 21231 P PI 41004 04 TE-15448 S/CV 48303 TI 41004 03-CL-144 V M 46016 CS-CL-256 C W-21-4 32136 MV CL-21-45 M 46490 CS CL-57-6 CL-100-4 CL-22-2 1-CL-37 CL-22-4-CL-255 CW-21-3 21233 P PI 41006 04 32142 MV 32380 MV M 46017 CS TE-15484 S/CV 48305 TI 41006 03 CL-100-3 CL-22-1 1-CL-42 CL-22-3 CL-100-5 CL-100-7 39201 CV CL-100-6 CL-100-8 39203 CV 39409 CV 39410 CV CW-60-2 CL-99B-4 CL-21-57 39403 CV 46034 CS 32322 MV CW-17-13 39404 CV CW-78-2 D ZX-1-69 CL-20-21 D 39412 CV 39411 CV RE 29051 CONT CL-80-8 CW-60-1 39401 CV 39402 CV CW-78-1 1 O-C L-124 CW-17-14 CL-20-25 D 32038 MV 46042 CS CW-6-1 CL-24-1 CONT C L-90-2-CL-167 CL-21-55 CW-6-2 CL-118-624-C L-20 CL-118-4 2-C L-94 CW-70-2 CL-119-1 D CL-21-70 CW-70-4 2-CL-95 CL-16-3 CL-74-6 1-CL-274 1-CL-273 1-CL-94 CL-74-5 D C L-118-5 2CL-99B-3 BLDG AUX BLDG TURB 46039 CS CONT CONT 32144 MV D CL-118-8 2-CL-135 CL-118-7 CL-114-1 MV CL-118-14 CL-118-13 CL-57-8 CW-71-1 2-CL-1O9 31672 CV 1-C L-1 O 9 CL-21-71 CW-71-3 CL-80-12 CL-99D-2 CL-99D-1 CW-19-3 2-CL-124 CW-60-3 2CL-80-10 RE 29051 CONT CL-20-27 CL-20-26 V CW-17-4 CW-17-3 CONT 31411 CV-CL-199 CL-40-2 CL-57-2-C L-198 TE-15445 CW-20-7-CL-197 CL-91-2 LCL SMPL D CL-20-31 22-CL-196 CW-20-4 PI 11182 46047 CS 32146 MV BLDG BLDG-C L-193 CW-20-1 TE-15444 CL-91-1 CW-20-3-CL-192 46044 CS 32145 MV CL-118-9 D UNIT 1 AUX BLDG BLDG CL-40-1 CONT 31381 CV CL-57-1 CL-118-3 CL-41-1 CL-36-2 CL-118-10 V FI 18207 FI 18209 CL-20-30 D SMPL LCL CW-62-2 C L-17-15 C L-17-16 CL-16-7 46045 CS CONT 32332 MV 11 121 21 SGB HX 11 11 13 12 12 14 38C 38D 38A 37D 37C 37A 38B 37B CW-21-1 3-C L-37 3-C L-95 2CL-99B-4 2" HOSE CONN ROOF DRN AUX BLDG 1-CL-95 F 32159 V CW-7-2 CL-103-28 2-CL-20 V V D D V PI 11181 CL-113-13 CL-113-12 D D 3-C L-42 V D V D V V V 4-CL-20 COO L ING W ATE R T O UN I T 1 CON T A I N M E N T FAN C O I L UN I T S N F-39216-412-C L-109 TURB 2-CL-33 CL-281-4 CL-281-3 3-ZE-7 3-ZE-11 RE-38 1O-CL-124 8-CL-49-C L-143 1O-CL-37 1O-CL-37 1O-CL-37 8-C L-37 8-C L-37 8-C L-4924-C L-109 8-CL-37 8-CL-54 10-CL-54-C L-191 8-CL-54 8-C L-54 8-CL-42 10-ZX-1020-C L-109 2-CL-266 RE-38 10-CL-2024-C L-23 10-CL-20 2-CL-20 3-CL-94 035-021 129-021 3-ZE-20 3-ZE-20 10-CL-58 2CL-281-4 2CL-281-3 6-CL-20 2CL-40-1-CL-264 135-031 12-CL-58 32160 MV 135-032-CL-265 12-CL-6O TURB BLDG BLDG (III/3)(III/3)1" 11 12 2C-4 NF-39217-2 MNTR CORROSION MNTR CORROSION C-5 NF-88740 H-1 NF-39217-1 A-1 NF-39216-2 H-1 NF-39216-2 NOTES: 3. DENOTES CATEGORY I VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES 6.F-9 XH-1-31 G-10 XH-1-31 C-5 NF-88740 TC-26392 E-8 NF-39603-2 F-8 NF-39603-2 2" 2" NF-39216 CL SYS FLOW DIA. UNIT 1 NF-39216 CL SYS FLOW DIA. UNIT 1 NF-39217 CL SYS FLOW DIA. UNIT 2 NF-39217 CL SYS FLOW DIA. UNIT 2 NF-86172 ZX SYS FLOW DIA. UNIT 2 REFERENCE DWGS NF-88740 - SB SYS FLOW DIA. UNIT 1 XH-1 RH SYS FLOW DIA. UNIT 1 SGB HX A-1 NF-39217-1 (I/1)CC HX (I/1)CC HX UNIT HX COND RTRN PROC STM (I/1)CC HX (I/1)CC HX TO RHR PITS CL TEST LNS PENETRATION NUMBER DENOTES CONTAINMENT C3 NSR III IC C3 NSR III IC C3 NSR III IC IC IC SR C3 III IC C3 NSR III IC NSR C3 C L-90-3 C3 NSR III IC C3 NSR III IC C3 NSR III IC NSR C3 III IC NSR C3 III IC C2 C3 IB IC C2 C3 IB IC C2 C3 IB IC C2 C3 IB IC C2 C3 IB IC NSR C3 III IC C3 NSR IC III C3 NSR III IC NSR C3 III IC III IC C3 NSR III IC III IC NSR C3 C3 NSR III IC III IC NSR C3 C3 NSR IC III C3 NSR IC III C2 C3 IC IB C2 C3 IB IC IB C2 IB C2 IC C3 NSR IIB IC 10-CL-42 IB C2 III IC C3 NSR 1 O-C L-1 O 9 LEGEND C2 C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III NF-39255 D1/D2 SYS FLOW DIA. UNIT 1/2 NF-39603 ZE SYS FLOW DIA. UNIT 1/2 NF-39603 ZH SYS FLOW DIA. UNIT 1/2 NF-86172 ZX SYS FLOW DIA. UNIT 1/2 H-4 NF-39217-2 FROM CNTMT FCU 21/23 F-4 NF-39603-2 FROM U-2 PMP MTR UNIT CLRS C2 C3 IC IB III IB C2 F-8 NF-39603-2 UNIT CLRS FROM U-1 PMP MTR G-11 NF-86172-3 RTN TO ZX SYS E-10 NF-86172-3 SPLY FROM ZX SYS G-11 NF-86172-3 RTN TO ZX SYS F-11 NF-86172-3 SPLY FROM ZX SYS 3" CONT CONT CONT CONT A-7 NF-39603-3 WTR CHLR CDSR FROM 121 CONT RM E-3 NF-39255-1 FROM D-1 DSL GEN FROM AUX BLDG HT RMVL SYS A-5 NF-39603-3 WTR CHLR UNIT TO 121 CONT RM TO RSDL HT PIT SMPS DRN LNS RSDL HT EXCTN F-6 NF-39603-2 MTR UNIT CLRS TO U-2 PMP E-7 & F-7 NF-39603-2 HT RMVL SYS TO AUX BLDG U-1 H-1 NF-86172-1 TO CHLR UNITS HT RMVL SYS TO AUX BLDG U-2 HT RMVL SYS FROM AUX BLDG DSL GEN FROM D-2 WTR CHLR CNDS FROM 122 CONT RM ROOF DRAIN AUX BLDG FLUSH WTR CHLR UNIT TO 122 CONT RM MTR UNIT CLS TO U-1 PMP D 2D-6 NF-39217-2 FCU 22 & 24 TO CNTMT D-6 NF-39217-2 " 2V C3 NSR FCU 22 & 24 FROM CNTMT HT EXGR AIR CLNT TO D-2 DSL GEN G-1 NF-39255-1 CLNT HT EXGR TO D-1 DSL GEN AIR E-6 NF-39217-2 FCU 21 & 23 TO CNTMT 13 14 IIB III IC C3 NSR III IC C3 NSR CL-133-5 CL-133-7 CL-133-6 CL-133-8 """" C2 C3 IB IC C3 NSR NSR III NSR III NSR III NSR REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT PER DRR PI-10-048 MOD#: EC-14552 DWN: DB 4-13-10 CHK'D: JEK 5-11-10 APP'D: CMR 5-11-10 REVIEWED: WJI 5-11-10 77 SAFETY CLASS DESIGNATIONS. D-5 NF-39217-2 G-8 NF-39217-2 C-11 NF-39217-2 E-11 NF-39217-2 B-9 NF-39217-2 DWN: DMN 10-27-09 CHK'D: BWK 10-28-09 AS BUILT-76 MOD#: EC-691 ADDED VENT VALVES CL-146-1, CL-146-3, CL,146-5, CL-146-7.

PER DRR PI-09-208 APP'D: CMR 10-28-09 CL-146-5 CL-146-1 CL-146-3 CL-146-7 "81" DWN: KJF 8-16-10 CHK'D: JBS 10-12-10 AS BUILT-78 MOD#: EC-14472 ADDED DRAIN LINE & DWG. CONT. & COORDINATES FOR 121 AIR HANDLER EQUIPMENT.

PER DRR PI-09-163 APP'D: CMR 10-18-10 DWN: JEK 6-29-12 CHK'D: SBS 7-11-12 AS BUILT-79 MOD#: EC-18147 CORRECTED VALVE ID FROM CW-40-1 TO CL-40-1.

PER DRR PI-12-134 APP'D: CMR 7-16-12 DWN: KJF 12-10-13 CHK'D: CMR 12-11-13 AS BUILT-80 MOD#: EC-22967 REVISED DWG TO REFLECT CONT RM AIR HANDLER DRAIN PATH REMOVAL.

PER DRR PI-13-236 APP'D: CMR 12-11-13 " C-9 NF-39228-4 SPRINKLER SYS C-8 NF-39228-4 SPRINKLER SYS "81" DWN: DB 12-18-14 CHK'D: KB 1-6-15 AS BUILT-81 MOD#: EC-23171 ADDED DWG CONT REF @ LOC E-4, B-4.

PER DRR PI-14-200 APP'D: CMR 1-6-15 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 5-22-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 1 5 6 4410 8540 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 81 NF-39216-3 NF-N F-39216-3 N F-NSP GENERATION CAD NF-39216-3.DGN FLOW DIAGRAM COOLING WATER - AUX BLDG UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. V V V V V D PS 17836 FE 27021 FE 27023 603000001331 CAD FILE: FIGURE 10.4-1D REV. 35 U10401D.DGN REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 5-22-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 1 5 6 4410 8540 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 80 39216-4 NF-39216-4 N F-NSP GENERATION CAD NF-39216-4.DGN FLOW DIAGRAM COOLING WATER-CONTAINMENT UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 2-CL-46 8-CL-47 8-CL-39 8-CL-50 8-CL-41 8-CL-52 8-CL-46 8-CL-55 ANNULUS 8-CL-48 8-CL-38 8-CL-51 8-CL-40 8-CL-53 8-CL-45 M 8-CL-56 8-CL-43 8-CL-44 F O R CON T INUA T ION SEE N F-39216-3 '448-CL-44 8-CL-55 6-CL-44 224-CL-44 6-CL-55 224-CL-55 (TYP)4-CL-44 (TYP)4-CL-55 2-CL-55 (TYP) 2-CL-44 (TYP)4-CL-52 224-CL-46 6-CL-52 226-CL-46 8-CL-46 8-CL-52 2-CL-46 (TYP)4-CL-52 (TYP) 2-CL-52 (TYP) 2-CL-46 (TYP)224-CL-50 4-CL-41 6-CL-50 226-CL-41 4-CL-41 (TYP)4-CL-5O (TYP) 2-CL-50 (TYP) 2-CL-41 (TYP)2-CL-39 8-CL-39 8-CL-47 2224-CL-47 4-CL-39 6-CL-47 222224-CL-47 (TYP)4-CL-39 2-CL-47 (TYP) 2-CL-39 (TYP)44CL-21-15 CL-21-14 CL-21-13 CL-21-34 CL-21-33 CL-21-32 CL-21-27 CL-21-26 CL-21-25 CL-21-44 CL-21-43 CL-21-42 39405 CV 39407 CV 39408 CV 39406 CV 48129 FI 41003 03 23130 F FE 27116 37B NOTE 6 CW-12-1-CL-170 D CL-21-11-CL-169 V CL-21-10 32132 MV CONT 38B 48130 FI 41003 02 23131 F FE 27117 TU 48156 FLOW LOW D-CL-177 CL-21-30 48133 FI 41005 01 23134 F FE 27120 37A CL-99B-5 NOTE 6 CW-12-2 M 32138 MV CONT-CL-152 V CL-21-20 D-CL-151 CL-21-19 48134 FI 41005 02 23135 F FE 27121 TU 48158 FLOW LOW A 47019 0506 A 47019 0504 NOTE 6 CW-12-3 38A 37C V-CL-180 V CL-21-29 VM 32135 MV 38D 48131 FI 41004 01 23132 F FE 27118 NOTE 6 CW-12-4 D CL-21-18-CL-186 D-CL-181 CL-21-28-CL-149 V CL-21-37 V 37D 48132 TI 41004 02 23133 F FE 27119 TU 48157 FLOW LOW A 47019 0505 48135 FI 41006 01 23136 F FE 27122 M 32141 MV CONT 38C 48136 FI 41006 02 23137 F FE 27123 TU 48159 FLOW LOW A 47019 0507 D-CL-153 CL-21-21 CL-99B-6 V V V V V V CL-21-40 D-CL-158-CL-159-CL-162-CL-161-CL-160-CL-213-CL-209-CL-188 V V V-CL-176-CL-175-CL-174 V V V 10-17-90 A FILMED: DWN: CLN 09-25-90 CHK'D: BE 10-10-90 AS BUILT-PI-702 B FILMED: DWN: WHS 4-25-91 CHK'D: AS BUILT-MOD: JHM 5-20-91 6-19-91 C FILMED: DWN: CHK'D: AS BUILT-CHANGED WINDOW 47019-0506 TO 47019-0505 PER DRR PI-91-164 CAP 9-23-91 MOD #: MOD. #: D MOD#: DWN: DB CHK'D: PAS 8-31-95 AS BUILT-FILMED: 9-6-95 REV'D. DWG. CONT. TO READ NF-39603-4

PER DRR PI-95-123

E MOD#: DWN: CLN 9-11-95 CHK'D: GPD 9-20-95 AS BUILT-FILMED: 10-10-95 REVISED ANNUNCIATOR NUMBER FROM 0505 TO 0506 AS FOUND PER DRR PI-95-159 MOD#: 94L473 DWN: 4-12-96 CHK'D: AS BUILT-

PER DRR PI-96-66 FILMED F MOD#: 94L473 DWN: JES 4-16-02 CHK'D: CMR 4/30/02 AS BUILT-CORRECTED VALVE No. IN REV BLK F FROM CL-57-1 THRU 4 TO CL-57-3 THRU 6 PER DRR PI-02-054 FILMED 5/02 G MOD#: DWN: WLI 2-28-05 AS BUILT-PER DRR PI-05-058 H CORRECTED CHLD WTR SPLY/RTRN DWG CONTIN-UATION REF TO NF-86172-4 CHK'D: CMR 3-01-05 FILMED 4-05 BLDG AUX WALL BLDG SHIELD 11 11 13 13 12 12 14 14 4-CL-46 4-C L-46 4-CL-46 46013 CS CL-281-24 CL-281-23 CL-281-21 CL-281-22 46012 CS CL-281-15 CL-281-16 CONT CL-281-14 CL-281-13 CL-281-19 CL-281-20 46011 CS CL-281-17 CL-281-18 CL-281-12 CL-281-11 46010 CS CL-281-9 CL-281-10 6. CHECK VALVE INTERNALS REMOVED. FLOW LOW 4" 4" CL-289-8 CL-289-7 CL-289-4 CL-289-3 CL-289-6 CL-289-5 CL-289-2 CL-289-1 NOTES: 3. DENOTES CATEGORY I VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES TYP 8 PLCS REFERENCE DWGS NF-39216 CL SYS FLOW DIA. UNIT 1 NF-86172 ZX SYS FLOW DIA. UNIT 1 & 2 NF-39603 ZH SYS FLOW DIA UNIT 1

VALVES CL-57-3 THRU 6 FLANGE REF. DELETED RELIEF CHECK VALVES. ADDED BLIND COOLERS. ADDED NOTE FOR REMOVED FAN COIL MOTOR -CL-157-CL-148 7. DENOTES CONTAINMENT PENETRATION NUMBER CNTMT INSIDE C3 NSR IIB IC E-11/E-10 NF-86172-4 CLG COIL TO 12 SHROUD CHLD WTR SPL/RET E-9/E-8 NF-86172-4 CLG COIL TO 11 SHROUD CHLD WTR SPL/RET C3 NSR IIB IC NSR C2 IB III LEGEND C2 C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III TYPE IC TO TYPE IB

AS BUILT PER DRR PI-09-076 DWN: KJF 10-2-09 CHK'D: BAW 10-17-09 76 APP'D: CMR 10-17-09 MOD#: EC-9131 174-012 (I/1) 12 CNTMT FCU EL 711'-6" 174-013 (I/1) 13 CNTMT FCU EL 755'-0" 174-011 (I/1) 11 CNTMT FCU EL 711'-6" H-6 NF-39603-4 CLN UP FLTRS TO CNTMT INT H-6 NF-39603-4 CLN UP FLTRS TO CNTMT INT REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT PER DRR PI-10-048 MOD#: EC-14552 DWN: DB 4-2-10 CHK'D: JEK 5-11-10 APP'D: CMR 5-11-10 REVIEWED: WJI 5-11-10 78 SAFETY CLASS DESIGNATIONS. PER NDR INTO THIS SYSTEM INCORPORATE THIS DWG PER DRR PI-91-040 EXISTING SYSTEM CONDITION QA TYPES TO REFLECT CHANGE BOUNDARIES AND 174-014 (I/1) 14 CNTMT FCU EL 733'-6" CL-146-2 CL-146-6 CL-146-4 CL-146-8 DWN: DMN 10-27-09 CHK'D: BWK 10-28-09 AS BUILT-77 MOD#: EC-691 ADDED VENT VALVES CL-146-2, CL-146-4, CL-146-6, CL-146-8.

PER DRR PI-09-208 APP'D: CMR 10-28-09 C3 C2 IB IC TYP 8 PLCS "80" DWN: JEK 3-29-16 CHK'D: WJS 3-30-16 AS BUILT-79 MOD#: EC-26336 CHANGED ALL PIPING AND VALVES INSIDE CNTMT EXCEPT FAN COIL UNITS FROM C2 TO C3. PER DRR PI-16-084 APP'D: KJW 3-30-16 DWN: MEA 8-23-17 CHK'D: HAK 9-15-17 AS BUILT-80 MOD#: EC-6DOC00027361 REMOVED CODE CLASS FROM BREAKS AT THE FLANGES INLET AND OUTLET OF THE FCU COILS PER DRR PI-17-126 APP'D: DB 9-18-17 CORRECTED QA TYPE FROM AT CV-39405, CV-39407 AND AT CV-39408, CV-39406. 603000001331 CAD FILE: FIGURE 10.4-2A REV. 35 U10402A.DGN DWN: MEA 3-25-15 CHK'D: MJL 4-1-15 AS BUILT-83 MOD#: EC-22499 ADDED VALVE CW-54-61 AND REVISED DWG CONTINUATIONS PER INSTR AIR COMPRESSOR REPLACEMENT. PER DRR PI-15-043 APP'D: KJW 4-2-15 DWN: MEA 9-28-15 CHK'D: RLM 10-6-15 AS BUILT-84 MOD#: EC-24009 CHG INSTRUMENT NUMBER 41515 CHANGED TO 41505.

PER DRR PI-15-115 APP'D: KJW 10-8-15 DWN: DB 11-11-15 CHK'D: SS 11-11-15 AS BUILT-85 MOD#: EC-21304 CHG VLV 2CL-81-1 & 2 FROM GATE TO BALL VLVS.

PER DRR PI-15-155 APP'D: KJW 11-12-15 DWN: MEA 2-3-16 CHK'D: RLM 2-3-16 AS BUILT-86 MOD#: EC-25416 ADDED ISOLATION VALVES 2MD-21-1 THRU 2MD-21-8 FOR GEN H2 COOLER VENT LINES. PER DRR PI-15-131 APP'D: KJW 2-3-16 DWN: MEA 5-24-16 CHK'D: JSG 6-27-16 AS BUILT-87 EC-26254/EC-25766 EC-26281/EC-21511/ MOD#: EC-20576/EC-26228/ UNIT 2 GENERATOR RPLCMT UNIT 2 SEAL OIL RPLCMT

PER DRR PI-16-149 APP'D: RPP 6-30-16 CONSTRUCTION ISSUED FOR ADDED CAPS FOR REMOVAL OF HTR DRN PMP OIL CLRS PIPING. LOCKED CLOSED 2CL-86-8 & 2CL-92-1. N/A PE# MOD#: EC-20403 88 REVIEWED: RLW 8-2-16 AS BUILT-MOD#: EC-20403 DWN: MEA 12-4-17 CHK'D: SJR 12-7-17 DWN: JMB 9-22-14 CHK'D: RL 8-2-16 RECORD TRACING. TRANSFERRED TO CERTIFIED REV. 88, DRR PI-17-154 REV. 88 PER INCORPORATED A/E's PE CERT: APP'D: DB 12-11-17 APP'D: RLW 8-2-16 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 3-20-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 2 5 6 4410 8540 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 88 39217-1 NF-39217-1 N F-NSP GENERATION CAD NF-39217-1.DGN FLOW DIAGRAM COOLING WATER - TURBINE BUILD UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. ROOF DRAIN -2CL-119-2CL-121-2CL-120 2-2CL-13 3-2CL-13 3-2 C L-56 2-2CL-130 1O-2CL-55 4-2 C L-52 24-2CL-56 4-2CL-51-2 W L-17 2-2 W L-5 O 1 2-2 W L-16 8-2 C L-56 4-2ZE-5 24-2CL-56 6-2CL-56 6-CL-112 3-CL-111 24-2CL-56 2-2CL-5O 2-2CL-56 3-2 C L-9 6-2CL-51 4-2 C L-51 6-2CL-56 2-2ZE-4 3-2 C L-56-3-2CL-56 6-2 C L-57 2242-2CL-145 DENOTES FURNISHED W/EQUIP. M 3O STANDPIPE (UNIT-1)(UNIT-2)-2CL-114-2CL-1O6 2-2CL-14 2-2CL-56 2-2 C L-13 O-2CL-13O-2CL-99 V-2CL-118 2-2CL-54 24-2CL-57 2-2CL-54 4-2 C L-12 6-2 C L-914-2 C L-5614-2 C L-53 1 O-2 C L-53 1 O-2 C L-56 3-2CL-56 1O-2CL-53 18-2CL-9 1 O-2 C L-1 O16-2 C L-914-2 C L-1 O 2-CL-96 4-C L-82 4-2ZE-324-2 C L-9 3-2CL-9 4-2CL-9 12-2CL-9 2-2CL-9 3-2CL-14 24-CL-23-2CL-15-2CL-128 8-2 C L-57 3 O-2 C L-57 3O-CL-23 24-CL-23 1O-2CL-11 2-2CL-5O-2CL-50 3-2CL-9 2-2 C L-15 D C B A B C D 1O-2CL-53 1 O-2 C L-1 O A 2-2 C L-9 1-2CL-13O -2CL-1712-2 C L-56 2-2CL-133 V 2-2CL-132 24-2CL-90DRAIN SAMPLE (UPPER)(LOWER)-2 C L-144 2CL-24-1 BLDG TURB BLDG AUX 2CL-99C-2 2CL-88-49 2CL-49-3 2CL-16-2 CW-46-1 CW-47-1 12-2CL-56 2-2CL-56 2-2CL-56 2CL-88-48 2CL-86-8 ZX-19-1 DRN ROOF 2MD-32-1 2MD-14-1 PI 11175 2MD-3-9 2MD-12-2 2" 2" 2MD-12-3 2MD-3-10 CONT LA 16754 A 47508 0606 LVL HIGH 22 21 2CD-70-1 2CL-2-4 2CL-46-5 2CL-86-4 2CL-2-3 D 2CL-88-9 D 2CL-88-10 2CL-88-11 V 2CL-52-13 2CL-8-1 V 2CL-88-8 2CL-2-2 TI 12210 2CL-86-6 D CL-73-1-2CL-54-2CL-54 2CL-54-19 DPS 16412 A 47507 0101 FE 27133 A 47507 0201 DPS 16414 2CL-99-2 TE-15399 2CL-99-1 V V 2CL-96-2 2CL-96-1 21 22 CONT LCL TE-15398 SV-33117 2CL-97-1 2" 2" 2CL-87-7 CW-52-1-2CL-99 2CL-97-2 CONT LCL TE-15397 SV-33118 2 C L-30-1 TI 12209 2CL-86-3 2CL-10-1-2CL-91 2CL-88-28 21 22 22-2CL-97 2CL-14-1 2CL-88-32 B 2CL-10-4 2CL-88-31 2CL-14-4 2CL-90-1 MNTR CORROSION 2CL-34-1 DUMP EMERG" 22 2CL-92-1-2CL-14 D 2CL-86-1 2CL-87-3 2CL-88-37 2CL-88-39 2-2CL-56"-2CL-14 D 2-2CL-14 2CL-87-4 2CL-88-36 2CL-88-38 21 2CL-86-2 FLOW SIGHT 2CL-86-5 2CL-88-41 2CL-49-1 2 C L-32-1 1-2CL-17 2CL-50-3 2CL-88-7 2-2CL-13O 2 C L-50-8 2 C L-50-9 23 2-2CL-13O 2CL-50-2 2CL-88-6 22 2 C L-50-7 2 C L-50-6 2CL-50-1 2CL-88-5 21 2CL-50-5 2 C L-50-4 (TYP)-2CL-17 (TYP)-2CL-130 2CL-46-3 PI 11031 TI 12207 2CL-28-5-2CL-1O5 D PI 11164-2CL-94 2CL-88-16 2CL-29-5 2CL-29-6 D 2CL-88-24 PI 11163-2CL-113 D 2CL-88-25 2CL-28-6 D 2CL-88-17 D 2CL-88-19-2CL-1O8-2CL-1O7 2CL-88-18 2CL-28-8 2CL-28-7 D PI 11161 PI 11162 D 2CL-29-7-2CL-115 2CL-88-26 2CL-29-8 D-2CL-116 2CL-88-27-2CL-110-2CL-1O2 21 2CL-28-1-2CL-1O1 D 2CL-88-12 2CL-29-1 2CL-29-2 D 2CL-88-20-2CL-109 D 2CL-88-21 2CL-28-2 D 2CL-88-13 D 2CL-88-15-2CL-1O4-2CL-1O3 2CL-88-14 2CL-28-4 2CL-28-3 D D 2CL-29-3-2CL-111 2CL-88-22 2CL-29-4 D-2CL-112 2CL-88-23 A 2CL-35-2 2CL-54-29-2CL-117 31361 CV TI 12208 TE-15494 TR 42512 110 2CL-35-1 2 C L-23-1 CONT 2CL-46-4 2CL-81-1 2CL-81-2 2CL-82-1 2CL-82-2 2CL-48-1 V TE-15402 TE-15403 2CL-69-1 D V 2CL-88-3-2CL-126-2CL-127 2CL-88-4 21 2CL-27-4 2CL-27-3 2CL-27-1 2CL-88-1 V-2CL-124 22-2CL-125 2CL-88-2 2CL-27-2 2CL-87-2 2CL-87-1 2CL-88-47 2CL-88-40 V 2CL-2-1 BLDG AUX BLDG TURB CW-25-2 2CL-26-1 2CL-99C-1 46515 CS 32033 MV 21006 P D 2CL-118-1 2CL-118-2 TE-15443 TE-15496 TI 12014 23067 F 2CL-99B-1 CP-48-1 2CL-36-1 FLOW HIGH CW-56-1 2CL-31-1 2CL-99B-2 M 46518 CS 32372 MV M 2AF-39-3 2AF-40-2--2CL-140-2CL-140 2CL-115-4 2AF-39-4 46883 CS 2CL-113-2 2CL-115-2 V-2CL-138 CONT 32030 MV CW-19-19 4-CL-90 DRAIN SAMPLE M 46434 CS V CONT 32027 MV AF-39-4 AF-39-3 AF-40-2 CL-115-4 CL-113-2 CL-115-2-CL-140--CL-140 CW-19-17-CL-138 1-2CL-9 14-2CL-9 4-2 C L-9 PI 11032-2CL-100 2CL-88-35 2 C L-113-4 2-CL-23 2CL-103-11 2CL-103-10 2CL-103-15 2CL-103-2 F 2CL-273-2 2CL-273-1 2-CL-23 4-2 C L-11 12-2CL-11 4-CL-23 4-CL-23 1O-2CL-11 6. -2CL-14 2CL-88-46 2CL-88-44 2CL-103-5 2CL-103-14 2CL-103-13 2CL-103-12 2CL-103-8 2CL-103-9 DPI 11026 2 C L-103-7 D D 4-2CL-56 3-CL-112 4-2CL-56 2-2 C L-56 V" 2 C L-173-1 DPI 11029 D D 2CL-85-2 2CL-85-1"" 22 21 217-092 217-091 D 1O-2CL-56 3" 1O-2CL-1O WASTE WASTE WASTE 245-253 245-252 245-251D (TYP 8)DRAIN FUNNEL D" CL-78-1 CL-77-1 THRU 11029 DPI 11O26 4-2 C L-52 2CL-88-45 V FLOW HIGH TURB BLDG TURB BLDG F 39449 CV C-12 NF-39217-2 B-1 NF-39216-1 A-12 NF-39217-2 REFERENCE DWGS NF-39215 CW SYS FLOW DIA UNIT 1 & 2 NF-39216 CL SYS FLOW DIA UNIT 1 NF-39216 CL SYS FLOW DIA UNIT 1 NF-39217 CL SYS FLOW DIA UNIT 2 NF-39222 - AF SYS FLOW DIA UNIT 1 NF-39223 - AF SYS FLOW DIA UNIT 2 NF-39244 - SA SYS FLOW DIA UNIT 1 & 2 NF-39253 SA SYS FLOW DIA UNIT 1 & 2 NF-39603 ZE SYS FLOW DIA UNIT 1 & 2 NF-86172 ZX SYS FLOW DIA UNIT 1 & 2 NF-39221 - CD SYS FLOW DIA UNIT 2 NF-39250 - SB SYS FLOW DIA UNIT 2 NF-118270 - D5/D6 MISC DRNS UNIT 2 10" 2CL-88-43 2CL-88-42 2CL-130-3 2-CL-90".CONN N DR WTR R CL EXCTR N DR T COMPARTMEN R CL EXCTR 1")(TYP.G TUBIN R COPPE"-FUNNEL DRIP) (TYP.VENT. WTR CLR H2"" VLVS FUNNEL" DRIP 1" 2MD-16-8 THRU 2MD-16-1 CLRS (III /3) GENERATOR HYDROGEN (III/3)CLRS GENERATOR EXCITER (III/3)SMP PMP TURB RM (III/3)CLRS BUS DUCT GENERATOR OIL CLRS (III/3) CONDENSATE PUMP RESERVOIR OIL CLRS (III/3) TURBINE E-H FLUID OIL CLRS (III/3) TURBINE OIL RESERVOIR H2 CLRS 21 & 22 GEN TYP VENT PIPING CLRS PIPING. 21 & 22 EXCTR TYP VENT & DRN (III/3)OIL CLRS FW PMP CLR SMPL PNL FW O2 1O-2CL-53 ATMOS OPEN TO-2CL-122-2 C L-14 UNIT CLRS (III/3)

1. 21 HYDROGEN SEAL OIL PRESS LOW (TYP 4)2-2CL-52 (TYP 4)2-2CL-12 (TYP 4)5-2CL-53 (TYP 4)5-2CL-1O (TYP 4)5-2CL-1O (TYP 4)6-2CL-10 (TYP 4)6-2CL-53 (TYP 4)5-2CL-53 (TYP 4)6-2CL-53 (TYP 4)6-2CL-10 NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. NSR C3 NSR IC III C3 NSR IC III C3 NSR C3 NSR IC IIB III IC C3 NSR IIB IC NSR C3 IC IIB NSR C3 IC III C3 NSR C3 NSR III IC IC C-5 NF-39603-2 UNIT COOLERS AFW PMP MTRS TO AIR COMPR & H-5 NF-39253-3 TO SA COMPR III H-8 NF-39223 PMP SUCT TO #12 AFW H-8 NF-39223 PMP SUCT TO #22 AFW C-5 NF-39603-2 PMP MTR UNIT CLRS TO FW & HTR DRN TNK A-4 NF-39603-2 MTR CLRS TO COND PMP H-7 NF-39223 PMP RECIRC LN FROM #21 & #22 AFW D-5 NF-39603-2 MTRS UNIT CLRS & AFW PMP AIR COMPR FROM G-3 NF-118270 FROM D5/D6 BLDG 6" ROOF DRN H-1 NF-86172-1 SYS CDSRS FROM CHLD WTR H-1 NF-86172-1 MEDIA FLTR BW CHLD WTR SYS FROM B-2 NF-39250 TO SGB SYS D-4 NF-39603-2 MTR UNIT CLRS FROM FW PMP F-1 NF-39221 FROM COND PMP #23 C-1 NF-39603-2 PMP MTR UNIT CLRS FROM HTR DRN TK H-2 NF-39253-3

1. 124 & #125 SA COMPRS FROM D-2 NF-39215-1 WTR SYS 30" TO CIRC A-1 NF-39603-2 MTR UNIT CLRS FROM COND PMP IC IIB C3 NSR A-7 NF-39216-2 CL SYS TO UNIT 1 C3 IC IIB" 2"" 2CL-103-21

LS 16860 LS 16861 2-2CL-11 2-2CL-11 III IIB IIB III IIB III III IIB III IIB 2CL-150-1" FUTURE 2-2 C L-291 CW-19-7 CW-54-61 (H-1)NF-39244-1 & AFTCLRS SYS FROM IA COMPR (H-2)NF-39244-1 & AFTCLR SYS TO IA COMPR 2MD-21-8 THRU 2MD-21-1 2CL-8-2 1 1/2-2CL-56 2CL-52-12 2-2CL-56 1-2CL-56 2CL-2-5 2-2CL-13 2MD-2-8 AND 2MD-2-3"88" L.C.1-2 C L-18 L.C.PI 11033 PI 11035 PI 11034 A 47520 0304 PS 16008 A 47020 0205 A 47520 0204 PI 41013 02 FE 27186 48612 TU 48660 A 47020 0105 A 47520 0104 FI 41013 01 FI 41505 01 PI 41505 02 01516979 CAD FILE: U10402B.DGN FIGURE 10.4-2B REV. 34 1-2 C L-41 2CL-57-4 2CL-21-46 2CL-100-2 2CL-21-4 8-2CL-27 -2CL-74 M M M 1818M M M M M M M M M M M M M M UNIT-1 AUX 1O1221233422624332-CL-23 UNIT-2 AUX 12-CL-23 233M-2CL-86 18-2CL-46 18-2CL-2O-2CL-59 -2CL-82 18-2CL-45 18-2CL-1912-2 C L-19 2224-CL-124 4-ZH-2 4-CL-124 1-2 C L-47-2CL-47-2 C L-47 4-ZH-1 18186241O224-CL-2312-2 C L-2 O 24-CL-124 24-CL-23 3-2ZE-6 3-2ZE-1O-2 C L-73 1O-2CL-39 1O-2ZX-68 3-2 Z X-148 1-2 C L-36 8-2CL-36 -2 C L-61 8-2CL-22 -2CL-6O 8-2 C L-21 8-2CL-41 8-2CL-29 1 O-2 Z X-69 3-2 Z X-147 1 O-C L-124 1-CL-124 29OO2 8-2CL-43 8-2 C L-26 1 O-2 Z X-11 1-2CL-41 1 O-C L-124 1O1 O-2 C L-4512-C L-23 12-CL-12512-C L-124 2-C L-124 3-C L-124 6-CL-124 1O-2CL-26-C L-259 3-2CL-47 3-2CL-34 1O-2CL-44 8-2CL-44 8-2CL-38 1-2CL-36 8-2CL-24 2-2 C L-33 2-2CL-32 2-2 C L-21 29OO2 1 O-2 C L-46 12-2CL-46 2-2CL-47 1-2CL-47 (TYP)AUX SHIELD WALL ANNULUS 1-CL-124 -C L-124 CORROSION" 6-CL-30 2-2CL-141 222-2CL-134 2-2CL-136 D FLUSH 14" 2" 2" 2-2CL-117-2CL-143 1-2CL-26 1-2CL-26 1-2CL-21 1-2CL-21-2CL-88-2CL-89-2CL-142 -2CL-74 32387 MV PI 41510 04 32151 MV 32389 MV S/CV 48803 TI 41510 03 2CL-57-6 TI 41512 03 32157 MV 2CL-100-4 2CL-21-3 PI 41512 04 2CL-57-3 2CL-21-47-2CL-95-2CL-96 32386 MV V-2CL-64 TI 41509 03 PI 41509 04 32388 MV-2CL-72 2CL-21-58 2CL-57-5 32148 MV TI 41511 03 32154 MV 2CL-21-2 CONT PI 41511 04 2CL-22-4 2CL-100-1 39202 CV 2CL-22-2 2CL-100-6 2CL-100-8 CONT 39414 CV 39413 CV 2CL-78-2 2CL-17-13 D 39422 CV 39421 CV CW-60-4 2CL-21-59 2CL-80-11 TO RHR PIT SMPS CL TEST LINES 2 C L-99 D-2 2CL-99D-1 2 C L-19-3 39416 CV 2CL-78-1 2CL-17-14 39415 CV CL-21-54 2 C L-90-3 CORROSION-C L-257 2CL-22-3 2CL-22-1 2CL-100-3 2CL-100-5 2CL-100-7 839423 CV 39424 CV 39200 CV CW-60-3 2CL-90-2 MNTR 1" 2" 32329 MV 1" 1" 2" 2" 2" 39409 CV CW-7-1 CL-21-53 V CONT CL-80-9 CW-7-2 2CL-40-1 CW-6-1 D CL-20-24 2CL-118-6 V 32159 MV CONT 2CL-118-5 31383 CV 32160 MV-2CL-58 CW-20-5 2CL-91-1-2CL-81 CW-20-2 CONT 2CL-20-30-2CL-84 2CL-57-1 CL-99B-3 CONT 31384 CV 2CL-20-31 SMPL LCL CW-17-1 CW-17-2 2-2CL-34-2CL-69 D CL-16-8 2CL-21-71 2CL-71-1 2-2CL-47 2CL-20-20 31673 CV 2CL-57-8 2CL-70-4 2CL-21-70 2CL-20-19-2CL-68 2CL-36-2 2CL-40-2 2CL-118-4 CW-70-1 D 2CL-71-3 3-C L-124 CL-16-12 V CL-21-50 D 2CL-21-64 32334 MV-2 C L-85 2CL-57-2-2CL-83 CW-20-6 2CL-91-2 CW-20-8 CONT 32161 MV D 2CL-118-9 2-2 C L-135 2CL-118-3 CL-21-51-CL-141 D 2CL-41-1 11 121 21 12 22 11 21 COO L ING W ATE R T O UN I T 2 CON T A I N M E N T FAN C O I L UN I T S N F-39217-3 2 C L-133-6 37B V 8-2 C L-44 V 38B 37D 46548 CS 38D 2CL-133-8 49634 CS 46547 CS 49635 CS V V 49632 CS 2CL-21-1 8-2 C L-39 46545 CS 49633 CS 46546 CS 8-2CL-39 2CL-133-7 38C V V 38A 37A 37C 3-2CL-21 8-2CL-39 D CL-21-52 1 O-2 Z X-12 D MNTR 3-2 C L-26 V-CL-124 CL-20-23 3-2CL-26 32038 MV 46573 CS-2CL-47 D D 2-2CL-23 4-CL-23-C L-124 1O-2CL-21 ROOF DRAIN AUX BLDG 2" HOSE CONN12-C L-124 6-C L-23 V CL-281-5 CL-281-6 CL-40-2 46520 CS-CL-124-CL-124 2CL-17-15 2CL-17-16 D D 2CL-113-9 V 3-C L-23 2CL-113-5 1O-CL-23 V 2CL-113-8 LCL SMPL D D 2CL-133-5 22 22 24 24 21 21 23 23 BLDG BLDG WTR CHLR CDSR 121 CONT RM 46517 CS 46144 CS CONT 1O-CL-23 46516 ES BLDG BLDG 12" 12" 6"-CL-258 12" 32146 MV 3-2 C L-21 1212" TURB 24" 24" BLDG BLDG 8-2CL-2112-2 C L-45 235-031 235-032 TURB 8-2CL-26 8-2CL-4424-C L-23 229-021 21 22 H-1 NF-39216-2 B-4 NF-39216-3 B-9 NF-39216-3 D-6 NF-39216-3 A-1 NF-39217-1 H-1 NF-39217-1 D-11 NF-39216-3 A-11 NF-39216-2 E-11 NF-39216-3 E-9 NF-39216-3 NF-39216 CL SYS FLOW DIA. UNIT 1 NF-39216 CL SYS FLOW DIA. UNIT 1 NF-39217 CL SYS FLOW DIA. UNIT 2 NF-39217 CL SYS FLOW DIA. UNIT 2 NF-39603 ZE SYS FLOW DIA. UNIT 1 & 2 NF-39603 ZH SYS FLOW DIA. UNIT 1 & 2 REFERENCE DWGS NF-86172 ZX SYS FLOW DIA. UNIT 1 & 2 NF-39255 D1/D2 SYS FLOW DIA. UNIT 1 & 2 XH-1001 RH SYS FLOW DIA. UNIT 2 NF-39250 - SB SYS FLOW DIA. UNIT 2 (III/3)SGB HX (I/1)CC HX (I/1)CC HX (I/1)CC HX (I/1)CC HX CONDENSATE RETURN PROCESS STEAM SGB HX 3-C L-23 7. DENOTES CONTAINMENT PEN NUMBER III IC C3 NSR III IC NSR C3 IC III C3 SR NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III NSR C2 IB NSR C2 IB NSR C2 IB C2 NSR IB C2 C3 IB IC C3 C2 IC IB C3 C2 IC IB C3 C2 IC IB C3 C2 IC IB C3 C2 IB IC C3 C2 IB IC C3 NSR IC IIB C3 NSR IC C3 NSR IIB IC C3 NSR IC III C3 NSR IC IIB C3 C2 IC IB C3 NSR C3 NSR IC IC IC III IC IC III C3 NSR IC IIB C3 NSR III IC NSR C3 III IC NSR C3 III IC NSR C3 IC NSR C3 IC C3 NSR IC C3 NSR C3 C2 IB IC C3 NSR IC III C3 NSR III IC H-2 NF-86172-3 CHLD WTR SYS RTRN TO F-5 NF-39216-3 FAN COILS #11 & #13 FROM CNTMT E-2 NF-86172-3 CHLD WTR SYS SPLY FROM NF-39216-3 FAN COILS #11 & #13 TO CNTMT G-11 XH-1001-8 F-9 XH-1001-8 PIT SMP PMPS RHR HX'S TO RHR DRN LNS FROM G-4 NF-39216-3 FAN COILS #12 & #14 FROM CNTMT C-6 NF-39216-3 FAN COILS #12 & #14 TO CNTMT WTR CHLR UNIT TO #121 CONT RM TO RHR PIT SMPS DRN LNS FROM RHR HX'S DSL GEN TO D1 DSL GEN FROM D1 HEAT RMVL SYS FROM AUX BLDG ROOF DRN AUX BLDG C3 NSR TO RHR PITS CL TEST LINES UNIT 1 HT RMVL SYS TO AUX BLDG TO CHLR UNITS NF-39603-2 UNIT 2 HT RMVL SYS TO AUX BLDG E-5 G-5 F-6 NF-39603-2 MTR UNIT CLRS TO UNIT 1 PMP 20" A-3 NF-39603-3 WTR CHLR UNIT TO #122 CONT RM E-5 F-5 NF-39603-2 UNIT 2 HT RMVL SYS FROM AUX BLDG A-1 NF-39603-3 WTR CHLR CDSR FROM #122 CONT RM F-6 NF-39250 CONT FROM TC-26394 F-6 NF-39250 SGB SYS F-3 NF-86172-3 CHLD WTR SYS SPLY FROM H-3 NF-86172-3 CHLD WTR SYS RTRN TO 2CL-146-5 2CL-146-1 2CL-146-7 C3 C2 IC IB 2CL-146-3 2UNIT CLRS PMP MTR TO UNIT 2"""" IIB III DWN: DB 1-26-10 CHK'D: JEK 1-27-10 AS BUILT-77 MOD#: EC-14781 UPDATE WITH STANDARD BORDER FOR CONSISTENCY WITH DRAWING CONTINUATION COORDINATES PER DRR PI-09-209 APP'D: CMR 2-12-10 III III III III A-3 NF-39255-1 FROM D2 DSL GEN CONT-CL-267 REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT PER DRR PI-10-048 MOD#: EC-14552 DWN: JEK 3-31-10 CHK'D: DB 5-11-10 APP'D: CMR 5-12-10 REVIEWED: WJI 5-11-10 78 SAFETY CLASS DESIGNATIONS. D-1 NF-39255-1 TO D2 DSL GEN H-5 NF-39216-3 D-6 NF-39216-3 C3 NSR III DWN: KJF 8-16-10 CHK'D: JBS 10-12-10 AS BUILT-79 MOD#: EC-14472 ADDED DWG CONT AND COORDINATES FOR 122 CR AIR HANDLER. UPDATED PPG. ID'S FOR D2 RTN LN PER DRR PI-09-163 APP'D: CMR 10-18-10 DWN: DB 10-14-10 CHK'D: JEK 11-24-10 AS BUILT-80 MOD#: EC-17064 REV'D 3" LINES FROM HT RMVL SYS FROM NSR TO C3, REVERSED QA DESIGNATIONS (@ C-5, D-6). 04NS14 PER DRR PI-10-182 APP'D: CMR 11-29-10 DWN: DB 10-7-13 CHK'D: CMR 10-7-13 AS BUILT-81 MOD#: EC-22106 REV'D 8" LINE NUMBER 8-2CL-39 TO 8-2CL-38. @ LOC G-1.

PER DRR PI-13-160 APP'D: CMR 10-7-13 DWN: KJF 12-10-13 CHK'D: CMR 12-11-13 AS BUILT-82 MOD#: EC-22967 REVISED DWG TO REFLECT CONT RM AIR HANDLER DRAIN PATH REMOVAL.

PER DRR PI-13-236 APP'D: CMR 12-11-13 " C-5 NF-39228-4 SPRINKLER SYS B-4 NF-39228-4 SPRINKLER SYS "83""83" DWN: DB 12-18-14 CHK'D: KB 1-6-15 AS BUILT-83 MOD#: EC-23171 ADDED DWG CONT REF. @ LOC B-4, E-4

PER DRR PI-14-200 APP'D: CMR 1-6-15 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 3-20-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 5 6 CL SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 83 39217-2 NF-39217-2 N F-NSP GENERATION CAD NF-39217-2.DGN FLOW DIAGRAM COOLING WATER - AUX BLDG UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. DWN: JLB 10-1-08 CHK'D: BWK 10-17-08 AS BUILT-PER DRR PI-06-068 FILMED 11/08 76 MOD#: EC-691 ADDED VENT VALVES 2CL-146-1, 2CL-146-3, 2CL-146-5, 2CL-146-7.

21235 P S/CV 48805 21237 P S/CV 48802 21234 P S/CV 48804 21236 P RE 16 RE 16 PI 11183 FI 18208 PI 11184 TE-15550 TE-15552 TE-15553 TE-15551 TE-15046 TE-15169 FI 18210 PS 17837 M FE 27022 FE 27024 603000001331 CAD FILE: FIGURE 10.4-2C REV. 35 U10402C.DGN -2CL-75 V V-2CL-67 2CL-21-44 2CL-21-68 LOW FLOW ANNULUS 8-2CL-38 8-2CL-25 8-2CL-36 M 8-2CL-43 -2CL-76 M-2CL-70 22222222222222222222228-2CL-24 8-2CL-22 2-2CL-129 8-2CL-29 8-2CL-30 8-2CL-41 8-2CL-28 8-2CL-27 8-2CL-40 4-2CL-35 4-2CL-23 6-2CL-23 6-2CL-35 8-2CL-23 8-2CL-35 6-2CL-37 6-2CL-25 4-2CL-37 4-2CL-25 6-2CL-25 4-2CL-37 4-2CL-25 8-2CL-25 8-2CL-37 4-2CL-42 4-2CL-30 6-2CL-42 2-2CL-30 8-2CL-42 6-2CL-30 8-2CL-37 2-2CL-25 2-2CL-28 8-2CL-42 F O R CON T. SEE N F-39217-2-2CL-40 -2CL-66 (TYP. 4)(TYP. 4)4-2CL-35 4-2CL-23 4-2CL-35 -2CL-90 -2CL-62 (TYP. 4)(TYP. 4)(TYP. 4)(TYP 4)4-2CL-42 4-2CL-30 4-2CL-42 4-2CL-30 2-2CL-42 8-2CL-30 4-2CL-30 4-2CL-42 4-2CL-25 4-2CL-37 2-2CL-35 2-2CL-23 4-2CL-23 4-2CL-35 4-2CL-23 2-2CL-25 2-2CL-37 2-2CL-42 2-2CL-30 4444#24 NOTE 6 NOTE 6 NOTE 6 NOTE 6 6. CHECK VALVE INTERNALS REMOVED. 2239417 CV 39418 CV 2CL-99B-6 2CL-12-3 48632 FE 27127 23141 F FI 41510 02 CONT 32150 MV 37B 38B 48631 FE 27126 23140 F FI 41510 01 A 41519 0502 TU 48657 48635 FE 27130 23144 F FI 41512 01 37D 2CL-21-69 2CL-12-4 32156 MV CONT 2CL-21-40 LOW FLOW 48636 FE 27131 23145 F FI 41512 02 A 41519 0504 TU 48659 38D V-2CL-87 2CL-21-66 39420 CV 39419 CV 2CL-21-65 2CL-99B-5 2CL-21-18 2CL-21-11 8-2CL-28 D 2CL-21-21 2CL-21-28-2CL-63 2CL-21-30 2222226-2CL-40 6-2CL-28 4-2CL-28 4-2CL-28 4-2CL-40 (TYP 4)(TYP 4)4-2CL-40 2-2CL-40 4-2CL-40 4-2CL-28 2-2CL-28 2-2CL-40 2-2CL-28 248629 FE 27124 23138 F FI 41509 01 37A LOW FLOW 48630 FE 27125 23139 F FI 41509 02 A 41519 0501 TU 48656 38A M CONT 32147 MV 2CL-19-33 2CL-12-1 48633 FE 27128 23142 F FI 41511 01 38C-2CL-71 2CL-21-67 LOW FLOW 48634 FE 27129 23143 F FI 41511 02 A 41519 0503 TU 48658 M CONT 32153 MV 2CL-12-2 37C-2CL-65 WALL BLDG SHIELD BLDG AUX 46542 CS 46543 CS 46544 CS 2CL-281-13 2CL-281-14 2CL-281-16 2CL-281-15 2CL-281-21 2CL-281-22 2CL-281-23 2CL-281-24 6-2CL-28 6-2CL-40 2CL-281-10 2CL-281-9 2CL-281-11 2CL-281-12 2CL-281-17 2CL-281-18 2CL-281-19 2CL-281-20 CNTMT INSIDE 23 23 21 21 24 22 22 46541 CS V D D D D D D D NF-39217 CL SYSTEM FLOW DIA UNIT 2 NF-39603 ZH SYSTEM FLOW DIA UNIT 1 & 2 NF-86172 ZX SYSTEM FLOW DIA UNIT 1 & 2 REFERENCE DWGS 8-2CL-30 TYP 8 PLCS 8-2CL-40 8-2CL-42 FLNG.BLIND 7. DENOTES CONTAINMENT PENETRATION NUMBER 2CL-289-3 2CL-289-4 2CL-289-7 2CL-289-8 2CL-289-1 2CL-289-2 2CL-289-5 2CL-289-6 NOTES: 3. DENOTES CATEGORY I LEGEND VENTILATION ZONE

4. FOR SYMBOLS SEE XH-1-105, NF-39214.

DESIGN CLASS. I/1 DENOTES EQUIPMENT QA TYPE/

2. MANUAL C PROCEDURE CHECKLIST.

FOR VALVE POSITIONS SEE OPS 1.5.C2 CLASSED AS NON-SAFETY-RELATED. DOWNSTREAM ITEMS (e.g., PIPE, CAPS, ETC.) STOP AT VENT AND DRAIN VALVES WITH UNLESS OTHERWISE SHOWN, CLASS BOUNDARIES C1 - SAFETY- RELATED; ISI CLASS 1 C2 - SAFETY-RELATED; ISI CLASS 2 C3 - SAFETY-RELATED; ISI CLASS 3 NSR - NON-SAFETY-RELATED SR - SAFETY-RELATED FLUID BOUNDARY; NON-CODE CLASS CLASS BREAK QA TYPE IA,IB,IC,IIA,IIB & III DENOTES PIPING QA TYPES. IB NSR III NSR C2 IB III NF-86172-4 TO #22 SHROUD CLG COIL CHLD WTR SPLY & RTRN E-4 E-5 NF-86172-4 TO #21 SHROUD CLG COIL CHLD WTR SPLY & RTRN E-3 E-2 C3 NSR IIB IC C3 NSR IIB IC DWN: KJF 10-2-09 CHK'D: BAW 10-17-09 AS BUILT-78 MOD#: EC-9131 CORRECTED QA TYPE FROM TYPE IC TO TYPE IB AT CV-39417, CV-39418 AN AT CV-39420, CV-39419 PER DRR PI-09-076 APP'D: CMR 10-17-09 2CL-146-4 2CL-146-8 2CL-146-2 2CL-146-6 PER NDR INTO THIS SYSTEM INCORPORATE THIS DWG DWN: DMN 5-14-08 CHK'D: BS 6-2-08 AS BUILT-76 MOD#: EC-10792 CORRECTED DWG REFERENCE AT B-8 AND D-7 CAPPED LINE 2-2CL-129

PER DRR PI-08-035 FILMED: 6-08 DWN: JLB 10-1-08 CHK'D: BWK 10-17-08 AS BUILT-77 MOD#: EC-691 ADDED VENT VALVES 2CL-146-2, 2CL-146-4, 2CL-146-6, 2CL-146-8.

PER DRR PI-08-068 FILMED: 11/08 REDRAWN PER SYSTEM WALKDOWN, INCORPORATED 04NS15 AS BUILT-PER DRR PI-10-048 MOD#: EC-14552 DWN: JEK 3-30-10 CHK'D: DB 5-11-10 APP'D: CMR 5-12-10 REVIEWED: WJI 5-11-10 79 SAFETY CLASS DESIGNATIONS. 274-013 (I/1)23 CNTMT FCU EL 733'-6" 274-011 (I/1)21 CNTMT FCU EL 711'-6" 274-014 (I/1)24 CNTMT FCU EL 755'-0" 274-012 (I/1)22 CNTMT FCU EL 711'-6" NF-39603-4 H-4 TO CNTMT INT CLN UP FLTRS H-4 NF-39603-4 CLN UP FLTRS TO CNTMT INT C3 C2 TYP 8 PLCS IB IC "81" DWN: JEK 3-30-16 CHK'D: WJS 3-30-16 AS BUILT-80 MOD#: EC-26336 CHANGED ALL PIPING AND VALVES INSIDE CNTMT EXCEPT FAN COIL UNITS FROM C2 TO C3. PER DRR PI-16-084 APP'D: KJW 3-30-16 DWN: MEA 8-23-17 CHK'D: HAK 9-15-17 AS BUILT-81 MOD#: EC-6DOC00027361 REMOVED CODE CLASS FROM BREAKS AT THE FLANGES INLET AND OUTLET OF THE FCU COILS PER DRR PI-17-126 APP'D: DB 9-18-17 FLNG.BLIND REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. MDZ 3-3-07 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 2 5 6 4410 8540 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 81 39217-3 NF-39217-3 N F-NSP GENERATION CAD NF-39217-3.DGN FLOW DIAGRAM COOLING WATER - CONTAINMENT UNIT 2 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. NO.S

10-17-90 A FILMED: PROJ: DWN: CLN 10-01-90 CHK'D: BE 10-10-90 AS BUILT-PI-702 B FILMED: DWN: WHS 4-26-91 CHK'D: AS BUILT-CHANGE BOUNDARIES AND QA TYPES TO REFLECT EXISTING SYSTEM CONDITION PER DRR PI-91-040 MOD: C FILMED: DWN: CHK'D: AS BUILT-CHANGED ANN. WINDOW CAP 9-20-91 MOD: NO.S PER DRR PI-91-164 JHM 5-21-91 6-19-91 D MOD#: 94L442 DWN: BMS 7-18-95 CHK'D: DJP 7-21-95 AS BUILT-FILMED: 8-1-95 BLANKED OFF 22 AND 24 FAN MOTOR COOLERS.

PER DRR PI-95-98 E MOD#: DWN: CLN 9-11-95 CHK'D: AS BUILT-FILMED: DELETED RELIEF VA. 2CL-57-3, 5, FAN COIL MTR RELOC. DRAIN 2CL-21-67. MISC. INSTRUMENT NO. REV'D LINE SIZES. REV'D COOL. FOR #21, #23 F.C.U. AS FOUND F MOD#: 94L442 DWN: BMS 4-7-97 CHK'D: AS BUILT-DELETED RELIEF VA. 2CL-57-4, 6, FAN COIL MTR PER DRR: PI-97-34 VALVES 2CL-12-3/2CL-12-4. COOL. FOR #22, #24 F.C.U. ADDED NOTE REF. FOR CHECK ADDED BLIND FLNG. REV'D. FILMED: 04/30/97 PER DRR: PI-95-159 MOD#: DWN: MRH 10/13/98 CHK'D: PAS 10-22-98 AS BUILT-

PER DRR: PI-98-97 G FILMED: 11-98 REVISED INSTRUMENT NUMBERS AS SHOWN

603000001331 CAD FILE: FIGURE 10.4-3B REV. 35 U10403B.DGN REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. EP HS/BSS 4-28-71 1"=1'-0" UNO FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 100 5 6 5300 CL SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT 21 6197 RALPH WEAVER NORTHERN STATES POWER COMPANY 76 38607-2 NF-38607-2 N F-by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSP GENERATION CAD NF-38607-2.DGN 4-28-71 PE #9532 CIRCULATING WATER SYSTEM EMERGENCY COOLING WATER INTAKE CRIB DETAILS A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 E.2,357,133 N.594,88660° (T Y P.)(A T C U T-OFF ELEVA T ION)P ILE C IRCLE 9'-6" (TYP.)14HP117 DWG. NF-38607-4 OUTLINE OF PILE CAP "76" DWN: LAB 6-24-09 CHK'D: SFG 6-26-09 AS BUILT-FILMED: 7-09 76 MOD#: EC-14336 REVISED LOCATION OF EMERGENCY COOLING WATER INTAKE STRUCTURE

1. 36-CL-1.

PER DRR PI-09-057 01516979 CAD FILE: FIGURE 10.4-4A REV. 34 U10404A.DGN 12-CC-2 2-CC-22 1-CC-22-CC-131-CC-7610-CC-8-C C-2 0-C C-14 1-CC-14 2-CC-8 2-CC-22 1-CC-20-CC-12 2-CC-22 2-CC-8-CC-16 1-CC-16 10-CC-2 2-CC-22-CC-68 1-CC-68 2-CC-8 2-CC-23 1-CC-23-CC-132-CC-77CC-33-10 10-CC-9-C C-21 2-CC-9 2-CC-23 1-CC-21-CC-13-CC-19 2-CC-23 2-CC-9 1-CC-17 2-CC-23 1-CC-69 2-CC-910-CC-23 1-CC-1510-CC-23 LOW FLOW-CC-93 4-CC-56 3-CC-4512-CC-57 4-CC-57 3-CC-57 6-CC-58 6-CC-57 6-CC-56 8-CC-57 6-CC-56 3-CC-56 SV-33325 3-CC-44 2-CC-44 3-CC-43-CC-119 3-CC-42 2-CC-41-CC-103-CC-118 S/CV 48300 4-CC-48 2-CC-48-CC-117 3-CC-45 4-CC-48 1-CC-48f-CC-46 1-CC-47-CC-113-CC-112-CC-114-CC-126 3-CC-38f-CC-38-CC-116-CC-115 1-CC-38 4-CC-37-CC-37 1-CC-38 4-CC-38 4-CC-52 2-CC-52 3-CC-49 4-CC-52-CC-50f-CC-50-CC-104 CC-69-2-CC-105-CC-106-CC-127 3-CC-40f-CC-40-CC-107-CC-108 1-CC-40 1-CC-40 4-CC-40 4-CC-39-CC-39 4-CC-56 1-CC-52 1-CC-65-CC-110-CC-111 OUTSIDE CONTAINMENT 4-CC-56 1-CC-48 1"-CC-109 3-CC-41 1-CC-3510-CC-9 4-CC-10 4-CC-10 10-CC-8 6-CC-10 6-CC-9 4-CC-35 12-CC-3512-CC-8 6-CC-818-CC-8 12-CC-8-CC-91-CC-124-CC-96 HIGH TEMP HIGH TEMP 12-CC-9 12-CC-4-CC-125-CC-87-CC-88 12-CC-5-CC-89-CC-90 12-CC-5 1-CC-512-CC-7-CC-86-CC-85 12-CC-6 CC-3-2-CC-83 1-CC-62 12-CC-6 CC-1-14 1-CC-6 48154 TU 48155 TU 2-RM-9 2" OVERFLOW 3-WL-106 V 1" VACUUM BREAKER 2-CC-135 2-CC-136 2-CC-67 2-CC-1 2-CC-63 CC-33-3 CC-58-1 4-CC-1 12-CC-3 4-CC-2 12-CC-4 12-CC-2 12-CC-3 3-CC-62 REACTOR CONTAINMENT 1-CC-5210-CC-22 1-CC-13 1-CC-19-CC-82 CC-33-36 SEE NOTE 618-CC-9 1-CC-12 1" D TEST12-CC-9 8-CC-9 TEST TEST 48109 CC-33-42 CC-30-18 CC-5-2 CC-30-20 CC-33-27 48108 CC-30-2 CC-30-1 CC-33-19 CC-33-17 CC-33-23 CC-30-3 CC-1-10 CC-33-30CC-35-14 CC-35-4 CC-30-8 CC-35-2 CC-35-1 CC-34-6 CC-33-47 CC-37-14 CC-33-49 CC-24-1 CC-33-58 CC-21-3 CC-30-7 CC-7-1 CC-3-4 CC-33-48 CC-33-50 CC-33-54 CC-33-55 CC-22-2 CC-33-51 CC-34-45 CC-59-1CC-33-68 CC-65-1 CC-33-41 CC-33-31 CC-33-33 CC-33-40 CC-31-3 CC-1-15 CC-33-13 CC-33-53 CC-27-8 LA-1-47 CC-59-2CC-30-19 CC-30-15 CC-35-9 CC-35-15 CC-30-17CC-33-26 CC-35-16CC-33-22CC-35-10 CC-30-6 CC-30-5 CC-33-18CC-30-4 CC-33-16CC-61-2 CC-30-10 CC-35-6 CC-30-9 CC-35-5 CC-33-60 CC-33-59 CC-60-1 CC-33-64CC-33-61CC-21-2 CC-33-67 CC-57-2 CC-33-29CC-33-11 CC-35-7 CC-35-13 CC-35-8 CC-1-2 CC-7-2 CC-22-1 CC-34-43 CC-34-42 CC-1-8 CC-3-1 CC-1-3 CC-1-7 CC-5-1 CC-1-9 CC-3-3 48110 47020 0502 32200 MV 32201 MV 32121 MV 32095 MV 31252 CV 32090 MV 32089 MV 31246 CV 32091 MV 32092 MV 32088 MV 32266 MV 48107 48106 48126 48125 SV-33180 SV-33035 SV-33181 FE 27086 HIGH FLOW RESET HIGH FLOW RESET HIGH FLOW CC-30-12

11 12 CC-113-18 CC-113-17 D V 1" D V V V D CC-281-42 CC-281-41 V D V D V V V D D D V CC-28-7 D V-CC-118 CC-281-43 CC-281-44 1-CC-99 V V V V D D D D DCC-113-22CC-113-21 V V VCC-113-25 D V V V 3-CC-9 CC-113-10 V V D CC-26-1 V 1-CC-62 D CC-113-7" D CC-113-2 D 3-CC-35 D CC-113-33 CC-113-34 V D" CC-113-1 CC-1-1 CC-113-5 12" D D 4" VCC-113-4 D V D D V 3" D 1-CC-20-CC-20-CC-20 1-CC-20 1-CC-14 1-CC-20 1-CC-14-CC-14 1-CC-14-CC-12-CC-18 1-CC-18-CC-12 1-CC-12 1-CC-18CC-113-20CC-113-19CC-113-24 CC-113-23-CC-16 CC-113-8 CC-113-13 8" 6-CC-10 CC-113-11 1-CC-9-CC-84 1" RECIRC LINE CC-38-1CC-113-15CC-113-16 CC-12-2-CC-52 1-CC-51 M M M M M M M M M M M MCC-281-15CC-281-16CC-281-18CC-281-17CC-281-25CC-281-26CC-281-28CC-281-27 M CC-281-12CC-281-11CC-281-13 CC-281-14 M CC-35-17 CC-35-11 CC-30-16CC-281-29CC-281-30CC-113-26 1-CC-17CC-281-31CC-281-32CC-35-12-CC-13-CC-19 1-CC-19 1-CC-19 1-CC-15-CC-17-CC-69-CC-21 1-CC-21 1-CC-21-CC-21 1-CC-21 1-CC-15-CC-15 CC-35-3 CC-281-19 CC-281-20 CC-21-4 1-CC-64-CC-38 V V CC-33-35 6-CC-35 6-CC-36 CC-113-9 V-CC-38-CC-38 HX 145-122 145-121 HX 32094 MV 4-CC-3 32093 MV D 1-CC-18 TE-15327 TE-15480 TE-15248 TE-15249-CC-43-CC-43-CC-42 12-CC-5712-CC-3-CC-22-CC-23 31432 CV CC-1-4 32120 MV TE-15474 TE-15481 TE-15483 TE-15482 TE-15475 32267 MV CC-16-3 CC-14-5 CC-57-1 CC-14-6 CC-16-2 FLOW LOW CC-38-2-CC-9 CC-61-110-CC-8 6-CC-10-CC-10 CC-18-1 CC-29-1 CC-68-5 CC-68-3 CC-68-4CC-36-4CC-32-2 CC-60-2 CC-68-8 CC-68-7CC-31-1CC-68-6 CC-70-2 CC-68-1 CC-29-2 CC-18-2CC-33-45CC-33-46CC-33-44CC-33-43-CC-42 CC-23-1 CC-70-3 CC-70-1CC-68-2CC-31-2 CC-33-4 CC-19-1 10-CC-3CC-1-6 CC-37-2 CC-113-3 CC-113-6 CC-33-52 CC-37-1CC-1-5 CC-33-37CC-33-39 CC-33-38 CC-30-11 CC-33-34 CC-1-13 CC-1-16 DE-34-43-CC-7 3-CC-140 1-CC-8 CC-31-4 CC-1-12 CC-1-11-CC-139 CC-42-1 CC-33-5 1-CC-139 1-CC-46 1" 1" 4-CC-56-CC-9 1" 1"-CC-135-CC-136-CC-136 LA-1-48 32B 32A 39 TE-15328 CONT CONT-CC-18 HX SL WTR-CC-19 19100 CS CONT THIS DWG SEE A-10 D D INSRIDE CONTAINMENT IB IC LOW FLOW D-5 XH-1-45 E-6 NF-39237 F-6 NF-39246-1 H-9 NF-39246-1 E-4 NF-39237 27075 FE 23086 F 27098 FE 0403 47016 A-CC-69 12-CC-9 12-CC-3-CC-81 PNL LCL SMPL 1-CC-15-CC-15 C-5 XH-1-45 HX L/O HX L/O 11261 PI 21226 P 145-071 (I/1)SI PMP 11 27072 FE 0402 47016 A V 145-051 (I/1)RCP 11-CC-43-CC-42 11262 PI FS18365 CC-22-1 11639 PI-CC-18 F-7 XH-1-31 145-111 (I/1)RHR PMP 11 G-7 XH-1-31 145-112 (I/1)RHR PMP 12-CC-13 145-072 (I/1)SI PMP 12 2 145-10)(I/1 P PM CS 2 1-CC-68 23083 F 18250 FI FLOW LOW B-8 XH-1-31 31245 CV 27187 FE 12161 TI C2 C3 IB IC C2 C3 C2 NSR IB III NSR C2 IB III-CC-140 C3 C2 IB IC C3 IB IC C2 C3 IB IC C2 D-10 NF-39216-3 D-9 NF-39216-3 NOTE: FOR NOTES, LEGEND AND REF. DRAWINGS SEE NF-39246-2 NSR C3 III IC III NSR C3 IC NSR C3 CC-31-5 IC III SR C3 IC E-9 NF-39216-3 11264 PI 2-CC-66 153-071 (I/1)CC SRG TK 11 46030 CS 19101 CS 46032 CS 46024 CS 46028 CS 46027 CS 46023 CS S/CV 48301 46031 CS 46029 CS 46035 CS 46033 CS 27067 FE 23082 FCC-281-23CC-281-24 48111 27066 FECC-281-21CC-281-22 02 41009 TI 27073 FECC-28-6 23085 F 27074 FE 02 41021 FI 01 41021 FI 03 41009 FI 02 41020 FI 01 41020 FI 02 41277 TI THIS DWG SEE H-9 FROM 1RE-39 1RE-39 01 41276 FI 01 41277 FI 02 41276 TI NSR C3 III IC NSR C3 III IC-CC-134-CC-134-CC-133 IB IC IB C2 NSR C2 C3 H-5 NF-39245-2 TO 11 SL WTR HX B-8 NF-39245-2 TO 121 WST GAS SYS NSR C3 NSR C3 PMP CONT III IC III IC C-1 NF-39245-2 SMPL PNL TO SGBD D-5 NF-39245-2 TO HOT CHEM LAB CHLR H-1 NF-39245-2 TO 11 LTDN HX C-1 NF-39245-2 SMPL PNL FROM SGBD C-8 NF-39245-2 WG SYS FROM 121 H-7 NF-39245-2 FROM SL WTR HX D-3 NF-39245-2 & CDSR FROM 11 BA EVAP D-6 NF-39245-2 PIT HX FROM SF E-11 XH-1-31 PIT SMP DRN TO 11 RH NSR C3 NSR C3 IC III III IC E-10 NF-39216-3 III NSR D-6 NF-39248 TO WST HUT F-6 NF-39245-2 TO SF PIT HX F-7 NF-39248 SMP TNK TO ARTD SYS 0103 47020 A 0203 47020 A (THIS DWG) TO SV-33035 LEVEL LOW/HIGH NSR C3 III IC NSR C3 III IC TEST CONN 3/4 " INSTR (THIS DWG) FROM L-24064 C3 IC IC SR IC CONT PMP E-11 XH-1-31 PIT SMP DRN TO RHR H-3 NF-39245-2 FROM 11 LTDN HX C-2 NF-39248 TO CNTMT SMP 33B C-2 NF-39248 TO CNTMT SMP F-2 NF-39248 TO CNTMT SMP C-2 NF-39248 SMP CNTMT TO CC-32-1CC-36-3 C-2 NF-39248 SMP CNTMT TO C-2 NF-39245-2 & CDSR TO 11 BA EVAP C-3 XH-1-38 EXCS LTDN C2 IB NSR III C2 IB NSR III CC-69-1 CC-113-30 ADDITION 2" CHEMICAL CC-113-29 III ATMOS VENT TO D-2 NF-39242 RX M-U WTR FROM DEMIN WTR/ -CC-135 4-CC-74 41007 LI 01 41009 PI 26331 TC 26332 TC 11263 PI 29052 RE 11637 PI 16262 PS 16263 PS FLOW LOW 18260 FI 27160 FE 0402 47019 A 0402 47018 A 18253 FI 27188 FE 18251 FI 23081 F 03 41008 FI 48161 TU 48306 S/CV 02 41008 TI 0501 47020 48307 S/CV 48162 TU 24064 L 23084 F 27048 FE 23107 F 27047 FE 23104 F 33A 40 18252 FI 0401 47018 A 18259 FI 0401 47019 A 27159 FE 18301 FI 27139 FE 0403 47020 18234 FI 0108 47015 18364 FS 27049 FE 18235 FI 18365 FS 27050 FE 0109 47015 27170 FE 18236 FI 27171 FE 18237 FI 21225 P 01 41008 PI 27046 FE 18272 FI CONT RAD 135-052 (I/1)RSDL HX 12 145-101 (I/1)CS PMP 11 135-051 (I/1)RSDL HX 11 145-052 (I/1)RCP 12 (TYP)f" TUBE & HOSE 135-011 (I/1)HX LTDN EXCS 11 135-031 (I/1)CC HX 11 135-032 (I/1)CC HX 12 (I/1)CC PMPS CLR WTR SEAL CLR WTR SL NL-40321 CONT HX SL WTR FS18364 B-11 XH-1-31 B-10 XH-1-31 C-2 XH-1-38 G-4 NF-39246-1 B-9 XH-1-31 IC C3 IC NSR C3 III IC NSR C3 III 1" TUBING-CC-46 AS BUILT-79 PER DRR PI-11-042 CHK'D: BPH 6-13-11 DWN: KJF 5-25-11 DRAIN LINES PER EC-17851. 11 & 12 CC PUMP DISCHARGE CORRECTED LABELING OF AS BUILT-APP'D: CMR 6-23-11 MOD#: EC-16675 CHK'D: BPH 4-21-11 DWN: KJF 4-11-11

PI-11638 AT H-6 & H-7. REMOVED PI-11636 AND G-7 NF-39246-1 PMP SUCT TO 21 CC F-6 NF-39246-1 PMP DISCH FROM 22 CC DWN: JEK 7-13-12 CHK'D: BPH 7-20-12 AS BUILT-80 MOD#: EC-17622 ADDED U1/U2 JUMPERS & REMOVED UNUSED PT SYMBOLS FROM #11 & #12 CC PMPS. PER DRR PI-12-133 APP'D: CMR 7-23-12 DWN: KJF 9-17-13 CHK'D: SBS 9-17-13 AS BUILT-81 MOD#: EC-20960 CORRECTED VALVE SYMBOL TO SHOW GLOBE VALVE INSTALLED FOR MV-32088.

PER DRR PI-13-148 APP'D: CMR 9-18-13 DWN: JEK 10-29-13 CHK'D: RLM 10-29-13 AS BUILT-82 MOD#: EC-21443 ADDED SAMPLING VALVES CC-33-12 & CC-33-13 TO DRN VLVS CC-33-33 & CC-33-35 RESPECTIVELY. PER DRR PI-13-195 APP'D: CMR 10-30-13 CC-33-32 NSR C3 III IC D CC-33-12 C3 IC III NSR G L ASSGAG E (A-6)THIS DWG DET. A (A-6)THIS DWG DET. A CC-33-4 GLASS GAGE 153-071 (I/1)CC SRG TK 11 CC-33-3 18628 LS 18629 LS D CC-175-7 CC-175-3 CC-175-5 D CC-175-8 D CC-175-9 D CC-175-6 CC-175-4 N S RIII I C S R N S RIII 6-CC-56 DETAIL A THIS DWG (G-5) CONT FROM"83""83" DWN: LAB 1-13-15 CHK'D: TEO 1-15-15 AS BUILT-83 MOD#: EC-17584 122 SFP HX CC TORNADO MISSILE & SEISMIC PROTECTION. ADDED DETAIL A. PER DRR PI-14-179 APP'D: CMR 1-16-15 CC-175-10 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

$$USERNAME$$

$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. DB 6-28-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 1 200 5 6 4400 4130 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 83 39245-1 NF-39245-1 N F-NSP GENERATION CAD NF-39245-1.DGN FLOW DIAGRAM COMPONENT COOLING SYSTEM UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. 01516979 CAD FILE: U10404B.DGN FIGURE 10.4-4B REV. 34 130 1-TCV 27043 FE 12176 TI 27040 FE 28530 XDCR 1826101 FI 28531 XDCR 1826102 FI 15531 TE 15533 TE 2-CC-60 2-CC-140 4-CC-36 2-CC-55-CC-55 1-CC-55-CC-55 4" 6-CC-55 1-CC-55 6-CC-36-CC-55 6-CC-55 6-CC-36 2-CC-55 6-CC-36 6-CC-58 3-CC-57 3-CC-54 2-CC-35 2-CC-54 3-CC-141 48124 6-CC-57-CC-53 1-CC-57 CC-12-3 6-CC-53 6-CC-142-CC-100 4-CC-55 1-CC-55 4-CC-55-CC-101 6-CC-55 CC-37-13 48119 1-CC-58 1-CC-60 2-CC-58 48123 2-CC-60 3-CC-60-CC-60 3-CC-62 3-CC-58 3-CC-9CC-54-1 4-2CC-88 4-CC-27 1-CC-27 2-CC-27 1-CC-31 4-CC-35 1-CC-24 4-CC-28 1 -CC-31 2-CC-31 3-CC-31 2-CC-31 4-CC-28 2-CC-24-CC-25 1-CC-25 2-CC-25 1 -CC-30 2-CC-30 1-CC-30 3-CC-24 2-CC-28 3-CC-28 CC-37-7 4-CC-24 CC-21-1 1-CC-26 2-CC-26 1-CC-29 2-CC-29 1-CC-70-CC-70 2-CC-24 2-CC-70 1 -CC-30-CC-30 2-CC-30 3-CC-30 2-CC-30 4-2CC-45 4-CC-57-CC-97-CC-98-CC-94 4-CC-73 4-CC-24 CC-33-102-CC-121-CC-123-CC-128 1-CC-34 PLUG PLUG 10" 1-CC-34 8-CC-32-CC-32 CC-34-10 8-CC-32 8-CC-9CC-34-8 8-CC-33 8-CC-33 CC-45-20 CC-45-7 CC-45-8 CC-45-10 8-CC-34 8-CC-34 8-2CC-45 8-CC-35 8-CC-57 8-CC-35 1" 1-CC-35 1-CC-71 8"CC-45-9 8-2CC-8 SPECTACLE SPECTACLE 8" CC-43-8-CC-102 CC-281-34 CC-281-33 D V V 1-CC-78 D VCC-281-7CC-281-8 V V V V V D D D D D 1" D V D V V D V V V D D D D D D D D D V V V V V V-CC-120 D V V D VCC-281-35CC-281-36 D D-CC-123-CC-54 1-CC-57 VCC-281-37CC-281-38 CC-281-47 CC-281-48 D V V 1-CC-75 V V D D D-CC-31 D D D-CC-28 V CC-281-3 CC-281-4 V-CC-24 V-CC-31 CC-281-6 CC-281-5 D-CC-24 V V D" V V D 4-CC-72 D 2-CC-36 M M M M TE-15320 TE-15319 TE-15321 TE-15412 TE-15318 TE-15317 31563 CV 115-061 117-011 035-012 035-011 044-073 044-071 044-072 HX HX HX FLG FLG V RM-14-2 RM-14-1 2RM-14-1 1-CC-30 3-CC-60 31202 CV 2-CC-58 32104 MV 32102 MV-CC-24 1-CC-28-CC-28-CC-30 3-CC-30 1-CC-29-CC-29 2-CC-31-CC-30-CC-30 CC-34-22 CC-34-25CC-281-2CC-281-1-CC-28-CC-28-CC-75-CC-31-CC-33-CC-33-CC-33-CC-33-CC-33-CC-33-CC-32-CC-32-CC-32 32117 MV CC-10-2 CC-10-1 32115 MV CC-46-1 CC-33-28 CC-34-39 CC-34-38-CC-53 CC-34-33 CC-20-2 CC-34-34 CC-36-1 CC-37-12 CC-25-1 CC-21-5-CC-35-CC-35-CC-122 CC-34-35CC-34-37-CC-54CC-34-36 CC-34-41 CC-34-5 CC-12-4 CC-45-4 CC-45-15 CC-45-12 CC-45-14 CC-45-11 CC-45-16 CC-43-6 CC-45-13 CC-45-23 CC-43-5 CC-62-1 CC-43-7 CC-45-22 CC-44-1 CC-11-1 CC-11-2 CC-34-13 CC-9-4 CC-9-3 CC-8-1 CC-8-2 CC-34-12 CC-37-3 CC-46-3 CC-67-1 CC-67-2 CC-31-6 CC-32-3 CC-45-18CC-45-17 CC-34-11CC-45-24 CC-45-25-CC-34 CC-34-9 CC-46-2 CC-45-19 CC-9-1 CC-9-2CC-45-21 CC-34-14 CC-45-1 CC-45-2 CC-45-5 CC-45-6 CC-43-1 CC-45-3 CC-43-3 CC-43-4 CC-43-2 CC-12-2 CC-34-32 CC-20-4 CC-20-6 CC-20-5 CC-20-7 CC-33-87 CC-34-31 CC-55-1 CC-12-1 CC-13-1CC-34-29-CC-55 CC-37-15 CC-37-10 CC-15-5 CC-16-1 CC-27-6 CC-27-7 CC-37-9CC-34-30-CC-27-CC-27-CC-27 CC-27-1 CC-34-19 CC-34-44 CC-14-1 CC-15-1 CC-14-2 CC-64-2 CC-34-18 CC-33-25 CC-57-9 CC-57-7 CC-57-4 CC-57-11-CC-24 CC-57-3 CC-64-1 CC-37-6 CC-27-2CC-34-16CC-34-17 CC-34-23 CC-33-100 CC-27-3 CC-20-1 CC-34-20 CC-27-4 CC-37-5 CC-34-28 CC-34-27 CC-33-99 CC-15-3 CC-14-3CC-33-98 CC-15-2 CC-34-24 CC-57-8 CC-63-2 CC-57-6 CC-14-4 CC-37-8 CC-15-4 CC-27-13 CC-37-20 CC-34-26 CC-27-15 CC-34-21 CC-27-5 CC-57-5 CC-64-3 CC-27-14-CC-95-CC-129 2-CC-26 2-CC-24-CC-27 1-CC-28-CC-75-CC-130 1-CC-57-CC-75 CC-33-20 4-CC-31-CC-54-CC-53 1"-CC-32-CC-33 8-CC-33 4-CC-27 4-CC-24-CC-28 8-CC-35-CC-X06-CC-X06 31489 CV XH-1-39-CC-74 1-CC-32 10" 18505 FI 12196 TI 12156 TI 18228 FI 18229 FI 12157 TI 18230 FI 02 41022 FI 01 41022 FI 1-CC-33 A-8 XH-1-29 B-8 XH-1-29 EVAP FR BA LINE TEMP EVAP FR BA LINE TEMP A-8 XH-1-29 B-8 XH-1-29 18227 FI 27039 FE A-2 XH-1-39 A-3 XH-1-39 D-4 XH-1-39 D-4 XH-1-39 XH-1-405 11 BA EVAP 27041 FE 23087 F 41023 FI 27044 FE 46572 CS 46064 CS 46063 CS 46571 CS 015-031 017-031 27141 FE 23089 F III IC 12158 TI III IC 1. FOR NOTES, LEGEND AND REF. DRAWINGS SEE NF-39246-2 NOTES: III IC C3 27045 FE 23088 F III IC C3 NSR III IC 12163 TI III IC C3 NSR NSR C3 III IC C3 NSR 12174 TI 27042 FE III IC C3 NSR IC IIB C3 NSR PRV-95-5 VALVE REG III IC C3 NSR NSR C3 III IC III IC NSR C3 III IC NSR C3 III IC IIB IC C3 NSR F-5 NF-39246-1 CCHX FROM U-2 E-7 NF-39245-1 CCHX FROM U-1 B-2 NF-39242 RMW SPLY C-4 XH-1-124 M-U LN COMPR SL C-11 NF-39242 RMW SPLY G-3 XH-550-6-1 RCMBNR 121 TO WG G-3 XH-550-6-2 RCMBNR 122 TO WG G-3 XH-1-124 M-U LN COMPR SL A-9 NF-39245-1 CC PMPS TO U-1 A-10 NF-39245-1 CC PMPS TO U-1 H-3 NF-39245-1 CCHX FROM U-1 H-10 NF-39246-1 CCHX FROM U-2 A-10 NF-39246-1 CC PMPS TO U-2 H-6 XH-550-6-2 CNDR HX-1 FROM CLR A-8 NF-39245-1 TO CC PMPS F-8 NF-39245-1 CCHX FROM U-1 A-9 NF-39245-1 CC PMPS TO U-1 F-5 NF-39245-1 CCHX FROM U-I E-3 NF-39245-1 CCHX FROM U-1 A-7 NF-39245-1 CC PMPS TO U-1 F-5 NF-39245-1 CCHX FROM U-1 A-8 NF-39245-1 CC PMPS TO U-1 D-1/F-1 NF-39246-2 SMPL CLRS TO & FROM D-1 XH-248-1-1 (HOT SMPL) ANNALYSIS PNL SGBD SMPL B-2 NF-39242 RMU WTR SLY C-5 XH-550-1 WST GAS COMPR 123 E-4 NF-39245-1 CCHX FROM U-1-CC-9 A-11 NF-39246-1 CC PMPS TO U-2 C3 NSR NSR C3 NSR 12155 TI (III/I)11 VENT CDSR (III/I)11 DISTL CLR 115-021 (III/I)11 EVAP CDSR (III/I)122 SF PIT HX (III/I)121 SF PIT HX 135-071 (III/I)LTDN HX 11 135-021 (III/I)SL WTR HX 11 (III/I)SEE XH-550-1 123 WG COMPR PKG (III/I)SEE XH-1-143 121 WE DISTL CLR (III/I)SEE XH-1-143 121 WE CDSR (III/I)SEE XH-1-124 121 WG COMPR PKG (III/I)SEE XH-1-124 122 WG COMPR PKG 044-031 (III/I)HOT CHEM LAB CHLR UNIT III IC C3 NSR 6-CC-35 2-CC-36 6-CC-143 3-CC-35 III IC NSR C3 REVISIONS A B C D E F H$$$$$$$$$DESIGNFIL$$$$$$$$$

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$$$$$$SYTIME$$$$$$ $$$$$$SYDATE$$$$$$ REV DWN DATE CHECKED PROJECT NO. APP'D & CERT. DB 6-28-10 NONE FILMED RED WING, MINNESOTA 1 2 3 4 SIGNIFICANT NO. GROUP 8630 1 200 5 6 4400 CL 1 SCALE PRAIRIE ISLAND NUCLEAR GENERATING PLANT

NORTHERN STATES POWER COMPANY 81 8540 39245-2 NF-39245-2 N F-by using safety practices, procedures and equipment as described in safety training programs, manuals and SPAR's. This map / document is a tool to assist employees in the performance of their jobs. Your personal safety is provided for NSRP GENERATION CAD NF-39245-2.DGN FLOW DIAGRAM COMPONENT COOLING SYSTEM UNIT 1 A B C D E F H G 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 12 CC-15-7 AND CC-15-8. REMOVED VALVE NO.'S 1-CC-74 4-CC-28 TO 4-CC-24 & 1-CC-24 TO 1-CC-74. DWN: KJF 7-13-10 CHK'D: KRK 7-30-10 AS BUILT-78 MOD#: EC-15378 REMOVED LINE CONT. TO & FROM ADT EVAPORATOR. CHNGD LINED NO.'S 4-CC-24 TO 4-CC-28 & PER DRR PI-10-055 APP'D: CMR 8-4-10 DWN: DB 6-27-12 CHK'D: BPH 7-2-12 AS BUILT-79 MOD#: EC-19398 CORRECTED LINE NO. 1-CC-157 TO 1-CC-57, SPECIAL VENT ZONE SYMBOL TO THE PER DRR PI-12-113 DOWN STREAM SIDE OF VLV CC-9-1, VLV SYMBOL FROM CHECK VLV TO GATE VLV SYMBOL FOR CC-43-1. APP'D: CMR 7-9-12 D-7 NF-39246-2 CC SYSTEM TO & FROM U-2 DWN: DB 11-4-13 CHK'D: CMR 11-5-13 AS BUILT-80 MOD#: EC-22980 REV'D CONT DESCRIPTION FOR LINES 3-CC-58 & 60 REFERENCING U-2 CC SYS & FLOW ARROW DIRECTION. PER DRR PI-13-202 APP'D: CMR 11-5-13 16308 PS 16307 PSCC-175-1CC-175-2 NSR III IC SR 12175 TI 15532 TE 15530 TE NSR C3 III ICCC-45-28CC-45-32 DCC-45-26CC-45-30 DCC-45-27CC-45-31 D CC-45-29 CC-8-4 CC-8-3 NSR III IC C3 V-CC-75 CC-63-1-CC-75-CC-75 H-6 XH-550-6-1 CNDR HX-1 FROM CLR CC-57-10 NSR C3 39154 CV V V 39153 CVCC-34-47CC-34-46CC-46-4 III IC NSR C3 D DWN: LAB 1-13-15 CHK'D: TEO 1-15-15 AS BUILT-81 MOD#: EC-17584 122 SFP HX CC TORNADO MISSILE & SEISMIC PROTECTION. ADDED SHOWN. ASSOCIATED VALVES AS CC-8-4 AND OTHER LS-18628, LS-18629, CC-8-3, PS-16307, PS-16308, CV-39153, CV-39154, PER DRR PI-14-179 APP'D: CMR 1-16-15 18182 PI 18181 PI 18180 PI"81""81"}}