{"id":376010,"date":"2024-10-20T02:46:16","date_gmt":"2024-10-20T02:46:16","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-ieee-60980-3442021\/"},"modified":"2024-10-26T04:52:12","modified_gmt":"2024-10-26T04:52:12","slug":"bs-en-iec-ieee-60980-3442021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-ieee-60980-3442021\/","title":{"rendered":"BS EN IEC\/IEEE 60980-344:2021"},"content":{"rendered":"

This International Standard describes methods for establishing seismic qualification procedures that will yield quantitative data to demonstrate that the equipment can meet its performance requirements. This document is applicable to electrical, mechanical, instrumentation and control equipment\/components that are used in nuclear facilities. This document provides methods and documentation requirements for seismic qualification of equipment to verify the equipment\u2019s ability to perform its specified performance requirements during and\/or after specified seismic demands. This document does not specify seismic demand or performance requirements. Other aspects, relating to quality assurance, selection of equipment, and design and modification of systems, are not part of this document. As seismic qualification is only a part of equipment qualification, this document is used in conjunction with IEC\/IEEE 60780-323.<\/p>\n

The seismic qualification demonstrates equipment\u2019s ability to perform its safety function(s) during and\/or after the time it is subjected to the forces resulting from at least one safe shutdown earthquake (SSE\/S2). This ability is demonstrated by taking into account, prior to the SSE\/S2, the ageing of equipment and the postulated occurrences of a given number of lower intensity operating basis earthquake (OBE\/S1). Ageing phenomena to be considered, if specified in the design specification, are those which could increase the vulnerability of equipment to vibrations caused by an SSE\/S2.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
5<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
7<\/td>\nCONTENTS <\/td>\n<\/tr>\n
11<\/td>\nFOREWORD <\/td>\n<\/tr>\n
13<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
16<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
24<\/td>\n4 Abbreviated terms <\/td>\n<\/tr>\n
25<\/td>\n5 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 <\/td>\n<\/tr>\n
26<\/td>\n5.5 Interfaces and adverse interactions
5.6 Simulating vibration induced by an earthquake
5.6.1 General
5.6.2 Response spectrum <\/td>\n<\/tr>\n
27<\/td>\n5.6.3 Time history
5.6.4 PSD function
5.7 Damping
5.7.1 General <\/td>\n<\/tr>\n
28<\/td>\n5.7.2 Measurement of damping
5.8 Application of damping
5.8.1 General
5.8.2 Application of damping in testing <\/td>\n<\/tr>\n
29<\/td>\n5.8.3 Application of damping in analysis
6 Seismic qualification requirements
6.1 General <\/td>\n<\/tr>\n
30<\/td>\n6.2 Specification of equipment to be qualified
6.3 Specification of ageing condition
6.4 Specification of seismic requirements
6.5 Specification of acceptance criteria <\/td>\n<\/tr>\n
31<\/td>\n7 Seismic qualification approach
7.1 Safety function
7.2 Seismic qualification methods <\/td>\n<\/tr>\n
32<\/td>\n8 Ageing
8.1 General <\/td>\n<\/tr>\n
33<\/td>\n8.2 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 <\/td>\n<\/tr>\n
34<\/td>\n8.6.2 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 <\/td>\n<\/tr>\n
36<\/td>\n9.1.2 Mounting
9.1.3 Monitoring
9.1.4 Loading <\/td>\n<\/tr>\n
37<\/td>\n9.1.5 Refurbishment
9.1.6 Exploratory tests <\/td>\n<\/tr>\n
39<\/td>\n9.1.7 Seismic ageing (OBE\/S1)
9.2 Proof and generic testing <\/td>\n<\/tr>\n
40<\/td>\n9.3 Fragility testing
9.4 Component testing
9.5 Assembly testing
9.5.1 General <\/td>\n<\/tr>\n
41<\/td>\n9.6 Test methods
9.6.1 General <\/td>\n<\/tr>\n
42<\/td>\n9.6.2 Single-frequency test <\/td>\n<\/tr>\n
44<\/td>\nFigures
Figure 1 \u2013 Sine beat
Figure 2 \u2013 Decaying sine <\/td>\n<\/tr>\n
45<\/td>\n9.6.3 Multiple-frequency tests <\/td>\n<\/tr>\n
48<\/td>\nFigure 3 \u2013 Random spectrum with superimposed sine beats <\/td>\n<\/tr>\n
49<\/td>\nFigure 4 \u2013 Resonant amplification versus cycles per beat <\/td>\n<\/tr>\n
50<\/td>\n9.6.4 Other tests
9.6.5 Test duration and low-cycle fatigue potential
9.6.6 Multi-axis tests <\/td>\n<\/tr>\n
52<\/td>\n9.6.7 Line-mounted equipment <\/td>\n<\/tr>\n
53<\/td>\n9.6.8 Additional tests
9.7 Test documentation
10 Qualification by similarity
10.1 General
10.2 Excitation
10.3 Physical systems <\/td>\n<\/tr>\n
54<\/td>\n10.4 Safety function
11 Analysis
11.1 General <\/td>\n<\/tr>\n
55<\/td>\n11.2 Seismic analysis methods
11.2.1 General <\/td>\n<\/tr>\n
56<\/td>\n11.2.2 Static analysis
11.2.3 Static coefficient analysis
11.2.4 Dynamic analysis <\/td>\n<\/tr>\n
57<\/td>\n11.3 Nonlinear equipment response
11.4 Other dynamic loads
11.5 Seismic analysis results <\/td>\n<\/tr>\n
58<\/td>\n11.6 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 <\/td>\n<\/tr>\n
59<\/td>\n12.2.3 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 <\/td>\n<\/tr>\n
60<\/td>\n12.3.3 Analysis
12.4 Shock testing
12.5 Extrapolation for multi-cabinet assemblies
12.6 Other test\/analysis <\/td>\n<\/tr>\n
61<\/td>\n13 Documentation
13.1 General
13.2 Seismic qualification report
13.2.1 General
13.2.2 Analysis
13.2.3 Testing <\/td>\n<\/tr>\n
62<\/td>\n13.2.4 Combined analysis and testing or similarity <\/td>\n<\/tr>\n
63<\/td>\nAnnex 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 <\/td>\n<\/tr>\n
64<\/td>\nA.2.3 Earthquake experience spectrum (EES)
A.2.4 Characterization of reference equipment class <\/td>\n<\/tr>\n
65<\/td>\nTable A.1 \u2013 EES reduction factor based on number of independent items <\/td>\n<\/tr>\n
66<\/td>\nA.2.5 Qualification of candidate equipment <\/td>\n<\/tr>\n
67<\/td>\nA.3 Test experience data
A.3.1 General
A.3.2 Characterization of test experience input motions
A.3.3 Test experience spectra (TES) <\/td>\n<\/tr>\n
68<\/td>\nA.3.4 Characterization of reference equipment class <\/td>\n<\/tr>\n
69<\/td>\nA.3.5 Qualification of candidate equipment
A.4 Special considerations
A.4.1 Inherently rugged equipment <\/td>\n<\/tr>\n
70<\/td>\nA.4.2 Limitations
A.5 Experience-based documentation
A.5.1 General <\/td>\n<\/tr>\n
71<\/td>\nA.5.2 Reference data
A.5.3 Candidate equipment qualification <\/td>\n<\/tr>\n
72<\/td>\nAnnex B (informative)Measurement of zero period acceleration <\/td>\n<\/tr>\n
73<\/td>\nAnnex C (informative)Frequency content and stationarity <\/td>\n<\/tr>\n
74<\/td>\nAnnex D (informative)Fragility testing
D.1 General
D.2 Excitation motion <\/td>\n<\/tr>\n
75<\/td>\nD.3 Application of results
D.4 Other considerations <\/td>\n<\/tr>\n
77<\/td>\nAnnex E (informative)Test duration and number of cycles <\/td>\n<\/tr>\n
78<\/td>\nFigure E.1 \u2013 Fractional cycles to obtain one equipment maximum peak cycle <\/td>\n<\/tr>\n
79<\/td>\nFigure E.2 \u2013 Equivalent peak-stress cycles induced by stationary random motion
Figure E.3 \u2013 Equivalent peak-stress cycles inducedby stationary random motion to 20 Hz <\/td>\n<\/tr>\n
81<\/td>\nAnnex F (informative)Statistically independent motions <\/td>\n<\/tr>\n
82<\/td>\nAnnex 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 <\/td>\n<\/tr>\n
83<\/td>\nFigure G.1 \u2013 Seismic qualification flowchart <\/td>\n<\/tr>\n
84<\/td>\nFigure G.2 \u2013 Seismic qualification test flowchart <\/td>\n<\/tr>\n
85<\/td>\nFigure G.3 \u2013 Seismic qualification analysis flowchart <\/td>\n<\/tr>\n
86<\/td>\nFigure G.4 \u2013 Seismic qualification analysis and test flowchart <\/td>\n<\/tr>\n
87<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Nuclear facilities. Equipment important to safety. Seismic qualification<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n88<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":376016,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[462,2641],"product_tag":[],"class_list":{"0":"post-376010","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-27-120-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/376010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/376016"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=376010"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=376010"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=376010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}