NATURAL PHENOMENA HAZARDS DESIGN AND EVALUATION

1,82

MB

CRITERIA FOR DEPARTMENT OF ENERGY FACILITIES

181

stron

6347

ID

U.S. Department of Energy

2005

rok

Table of Contents

Foreword iii

Table of Contents . vi

1.0 Introduction . 1-1

1.1 Overview of DOE Natural Phenomena Hazards Order, Standards, and Guidance . 1-1

1.2 Overview of the NPH Design and Evaluation Criteria 1-5

1.3 Evaluation of Existing Facilities . 1-6

1.4 Quality Assurance and Peer Review 1-7

1.5 References . 1-8

2.0 Earthquake Design and Evaluation Criteria 2-1

2.1 Introduction 2-1

2.2 General Approach for Seismic Design and Evaluation 2-1

2.3 Seismic Design and Evaluation of Structures, Systems, and Components. 2-6

2.3.1 Performance Category 1 and 2 Structures, Systems, and Components. 2-9

2.3.2 Performance Category 3 and 4 Structures, Systems, and Components 2-11

2.3.3 Damping Values for Performance Category 3 and 4 Structures, Systems, and Components

2-14

2.4 Additional Requirements 2-18

2.4.1 Equipment and Distribution Systems . 2-18

2.4.2 Evaluation of Existing Facilities 2-21

2.4.3 Basic Intention of Dynamic Analysis Based Deterministic Seismic Evaluation and Acceptance

Criteria 2-24

2.5 Summary of Seismic Provisions . 2-25

2.6 References. 2-27

3.0 Wind Design and Evaluation Criteria 3-1

3.1 Introduction . 3-1

3.2 Wind Design Criteria . 3-2

3.2.1 Performance Category 1 . 3-5

3.2.2 Performance Category 2 . 3-6

3.2.3 Performance Category 3 . 3-6

3.2.4 Performance Category 4 . 3-11

3.2.5 Design Guidelines . 3-13

3.3 Evaluation of Existing SSCs . 3-13

3.3.1 Data Collection 3-14

3.3.2 Analysis of Element Failures . 3-14

3.3.3 Postulation of Failure Sequence 3-14

3.3.4 Comparison of Postulated Failures with Performance Goals 3-15

3.4 References . 3-16

4.0 Flood Design and Evaluation Criteria 4-1

4.1 Flood Design Overview . 4-1

4.1.1 Design Basis Flood (DBFL) . 4-2

4.1.2 Flood Evaluation Process . 4-4

4.1.3 Flood Design Strategies 4-7

4.2 Flood Design Criteria 4-9

4.2.1 Performance Category 1 . 4-9

4.2.2 Performance Category 2 . 4-10

4.2.3 Performance Category 3 4-10

4.2.4 Performance Category 4 . 4-11

4.3 Flood Design Practice for SSCs Below the DBFL Elevation . 4-11

4.3.1 Flood Loads 4-11

4.3.2 Design Requirements 4-12

4.3.2.1 Performance Categories 1 and 2 4-12

4.3.2.2 Performance Categories 3 and 4 4-12

4.3.3 Site Drainage and Roof Design . 4-12

4.3.4 Flood Protection and Emergency Operations Plans . 4-13

4.4 Considerations for Existing Construction 4-14

4.5 Probabilistic Flood Risk Assessment 4-15

4.6 References . 4-15

Appendix A Terminology and Definitions . A-1

Appendix B Commentary on General NPH Design and Evaluation Criteria . B-1

B.1 NPH Design and Evaluation Philosophy B-1

B.2 Graded Approach, Performance Goals, and Performance Categories . B-3

B.3 Evaluation of Existing Facilities . B-7

B.4 References . B-10

Appendix C Commentary on Earthquake Design and Evaluation Criteria . C-1

C.1 Introduction . C-1

C.2 Basic Approach for Earthquake Design and Evaluation and Meeting Target Performance Goals

C-4

C.2.1 Overall Approach for DOE Seismic Criteria C-4

C.2.2 Influence of Seismic Scale Factor C-8

C.3 Seismic Design/Evaluation Input C-11

C.3.1 Earthquake Hazard Annual Exceedance Probabilities C-14

C.3.2 Earthquake Ground Motion Response Spectra . C-15

C.3.2.1 DBE Response Spectra at High Frequencies . C-16

C.3.3 Effective Peak Ground Motion C-18

C.4 Evaluation of Seismic Demand (Response) C-18

C.4.1 Dynamic Seismic Analysis C-21

C.4.2 Static Force Method of Seismic Analysis C-23

C.4.3 Soil-Structure Interaction C-23

C.4.4 Analytical Treatment of Energy Dissipation and Absorption . C-28

C.4.4.1 Damping C-28

C.4.4.2 Inelastic Behavior C-29

C.4.4.3 Guidance on Estimating the Inelastic Energy Absorption Factor Fμ C-34

C.5 Capacities . C-40

C.5.1 Capacity Approach C-40

C.5.2 Seismic Design and Detailing . C-41

C.6 Special Considerations for Systems and Components C-45

C.6.1 General . C-45

C.6.2 Seismic Interaction C-48

C.7 Special Considerations for Existing Facilities C-49

C.8 Quality Assurance and Peer Review C-51

C.9 Alternate Seismic Mitigation Measures . C-53

C.10 References C-55

Appendix D Commentary on Wind Design and Evaluation Criteria D-1

D.1 Wind Design Criteria . D-1

D.2 Tornado Hazard Assessment . D-2

D.3 Load Combinations D-3

D.4 Windborne Missiles D-6

D.5 References . D-8

Appendix E Effects of Natural Phenomena Hazards . E-1

E.1 Effects of Earthquakes E-1

E.2 Effects of Wind . E-4

E.2.1 Wind Pressures . E-5

E.2.2 Additional Adverse Effects of Tornadoes E-7

E.2.3 Effects on Structures, Systems, and Components E-7

E.3 Effects of Flooding E-8

E.3.1 Causes and Sources of Flooding and Flood Hazards E-8

E.3.2 Flooding Damage E-10

E.4 References E-12