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IEEE 60980-344-2020

IEEE 60980-344-2020

$57.96

IEEE/IEC International Standard – Nuclear facilities – Equipment important to safety – Seismic qualification

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IEEE 2020
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PDF Catalog

PDF Pages PDF Title
1 IEC/IEEE 60980-344-2020 Front Cover
3 Title page
4 CONTENTS
8 FOREWORD
10 INTRODUCTION
13 1 Scope
2 Normative references
3 Terms and definitions
21 4 Abbreviated terms
22 5 General discussion of earthquake environment and equipment response
5.1 General
5.2 Earthquake environment
5.3 Equipment on foundations
5.4 Equipment on structures
23 5.5 Interfaces and adverse interactions
5.6 Simulating vibration induced by an earthquake
5.6.1 General
5.6.2 Response spectrum
24 5.6.3 Time history
5.6.4 PSD function
5.7 Damping
5.7.1 General
25 5.7.2 Measurement of damping
5.8 Application of damping
5.8.1 General
5.8.2 Application of damping in testing
26 5.8.3 Application of damping in analysis
6 Seismic qualification requirements
6.1 General
27 6.2 Specification of equipment to be qualified
6.3 Specification of ageing condition
6.4 Specification of seismic requirements
6.5 Specification of acceptance criteria
28 7 Seismic qualification approach
7.1 Safety function
7.2 Seismic qualification methods
29 8 Ageing
8.1 General
30 8.2 Thermal ageing
8.3 Radiation ageing
8.4 Material degradation and corrosion
8.5 Mechanical or electrical cycle ageing
8.6 Vibration ageing
8.6.1 General
31 8.6.2 Ageing from non-seismic vibration conditions
8.6.3 Hydrodynamic loads
8.6.4 Seismic ageing (OBE/S1)
9 Testing
9.1 General
9.1.1 Test programme
33 9.1.2 Mounting
9.1.3 Monitoring
9.1.4 Loading
34 9.1.5 Refurbishment
9.1.6 Exploratory tests
36 9.1.7 Seismic ageing (OBE/S1)
9.2 Proof and generic testing
37 9.3 Fragility testing
9.4 Component testing
9.5 Assembly testing
9.5.1 General
38 9.6 Test methods
9.6.1 General
39 9.6.2 Single-frequency test
41 Figures
Figure 1 – Sine beat
Figure 2 – Decaying sine
42 9.6.3 Multiple-frequency tests
45 Figure 3 – Random spectrum with superimposed sine beats
46 Figure 4 – Resonant amplification versus cycles per beat
47 9.6.4 Other tests
9.6.5 Test duration and low-cycle fatigue potential
9.6.6 Multi-axis tests
49 9.6.7 Line-mounted equipment
50 9.6.8 Additional tests
9.7 Test documentation
10 Qualification by similarity
10.1 General
10.2 Excitation
10.3 Physical systems
51 10.4 Safety function
11 Analysis
11.1 General
52 11.2 Seismic analysis methods
11.2.1 General
53 11.2.2 Static analysis
11.2.3 Static coefficient analysis
11.2.4 Dynamic analysis
54 11.3 Nonlinear equipment response
11.4 Other dynamic loads
11.5 Seismic analysis results
55 11.6 Documentation of analysis
12 Combined analysis and testing
12.1 General
12.2 Modal testing
12.2.1 General
12.2.2 Normal-mode method
56 12.2.3 Transfer-function method
12.2.4 Analytical methods utilizing test data
12.2.5 Qualification
12.3 Extrapolation for similar equipment
12.3.1 General
12.3.2 Test method
57 12.3.3 Analysis
12.4 Shock testing
12.5 Extrapolation for multi-cabinet assemblies
12.6 Other test/analysis
58 13 Documentation
13.1 General
13.2 Seismic qualification report
13.2.1 General
13.2.2 Analysis
13.2.3 Testing
59 13.2.4 Combined analysis and testing or similarity
60 Annex A (normative) Experience-based seismic qualification
A.1 General
A.2 Earthquake experience data
A.2.1 General
A.2.2 Characterization of the earthquake experience motions
61 A.2.3 Earthquake experience spectrum (EES)
A.2.4 Characterization of reference equipment class
62 Table A.1 – EES reduction factor based on number of independent items
63 A.2.5 Qualification of candidate equipment
64 A.3 Test experience data
A.3.1 General
A.3.2 Characterization of test experience input motions
A.3.3 Test experience spectra (TES)
65 A.3.4 Characterization of reference equipment class
66 A.3.5 Qualification of candidate equipment
A.4 Special considerations
A.4.1 Inherently rugged equipment
67 A.4.2 Limitations
A.5 Experience-based documentation
A.5.1 General
68 A.5.2 Reference data
A.5.3 Candidate equipment qualification
69 Annex B (informative) Measurement of zero period acceleration
70 Annex C (informative) Frequency content and stationarity
71 Annex D (informative) Fragility testing
D.1 General
D.2 Excitation motion
72 D.3 Application of results
D.4 Other considerations
74 Annex E (informative) Test duration and number of cycles
75 Figure E.1 – Fractional cycles to obtain one equipment maximum peak cycle
76 Figure E.2 – Equivalent peak-stress cycles induced by stationary random motion
Figure E.3 – Equivalent peak-stress cycles inducedby stationary random motion to 20 Hz
78 Annex F (informative) Statistically independent motions
79 Annex G (informative) Seismic qualification illustrative flowcharts
G.1 General
G.2 Establishment of seismic conditions and acceptance criteria
G.3 Qualification by testing
G.4 Qualification by analysis
G.5 Qualification by combination of analysis and testing
80 Figure G.1 – Seismic qualification flowchart
81 Figure G.2 – Seismic qualification test flowchart
82 Figure G.3 – Seismic qualification analysis flowchart
83 Figure G.4 – Seismic qualification analysis and test flowchart
84 Bibliography

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IEEE 60980-344-2020
$57.96