Glossary entry (derived from question below)
English term or phrase:
follows three distinct paths
English answer:
three separate methods are used
Added to glossary by
Masoud Kakouli Varnousfaderani
Aug 2, 2016 06:04
7 yrs ago
English term
Türkiye
Masoud Kakouli Varnousfaderani 
The Best or Nothing
Native in: Persian (Farsi) 
Works in: English to Persian (Farsi), Persian (Farsi) to English, Persian (Farsi), and 1 more.
follows three distinct paths
English
Science
Geology
The latter is applied for specific design purposes of the building and structures as part of the seismic design process of Japanese NPPs, which is quite conservative, follows three distinct paths and chooses the most conservative result.
Responses
1 day 6 hrs
Selected
three separate methods are used
I agree with Didier's explanation in the Discussion section. This is certainly not about three different categories, but about the design calculations being done three times, each using a different method and the most conservative (i.e. the most robust specification to cope with the worst case scenario) is then adopted.
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Note added at 1 day6 hrs (2016-08-03 12:42:47 GMT)
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The question of which category the NPP falls into would, I believe, have to have been decided before proceeding with the design calculations, as that would be an essential bit of information in drawing up and calculating the design.
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Note added at 1 day6 hrs (2016-08-03 12:42:47 GMT)
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The question of which category the NPP falls into would, I believe, have to have been decided before proceeding with the design calculations, as that would be an essential bit of information in drawing up and calculating the design.
4 KudoZ points awarded for this answer.
+3
4 hrs
has three categories of anti-seismic building codes applicable to structures in NPPs
I think it refers to three categories of anti-seismic building codes applicable to structures in nuclear power plants. In Japan, structures in nuclear plants are categorised into one of three classes (namely Class S, Class B, and Class C) and different anti-seismic requirements are applied to different Classes.
I couldn't find relevant information in English but the link below shows 4 categories (previously there were 4, instead of 3) of building types ('classification') in Table 1 on page 5.
http://www.osti.gov/scitech/servlets/purl/29434/
I couldn't find relevant information in English but the link below shows 4 categories (previously there were 4, instead of 3) of building types ('classification') in Table 1 on page 5.
http://www.osti.gov/scitech/servlets/purl/29434/
Peer comment(s):
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acetran
4 hrs
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Thank you!
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Jörgen Slet
7 hrs
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Thank you!
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| agree |
Tariq Khader (X)
8 hrs
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Thank you!
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Discussion
http://proceedings.asmedigitalcollection.asme.org/proceeding...
or this document:
http://www.onr.org.uk/new-reactors/reports/step-four/technic...
for safety, one method is seldom considered enough, multiple calculation methods are used and the most conservative result is kept; we should not forget that all events considered are hypothetic and cannot be measured or estimated precisely: tsunami or x heigth, earthquake of y magnitude, power failure of z hours...
So multiple methods may be envisioned and each may prove right in the future