Individual:
http://rdf.iit.demokritos.gr/2014/iaeaSafetyGlossary/id510
Annotations (2)
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nreo:canonicalLabel "plant equipment" (en)
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skos:definition "Plant equipment <br/>
Items important to safetya<br/>
Items not important to safetya<br/>
Safety related itemsa<br/>
Safety systems<br/>
Protection<br/>
Safety actuation<br/>
Safety system<br/>
system<br/>
system<br/>
support features<br/>
a<br/>
In this context, an ‘item’ is a 'structure', 'system' or 'component'.<br/>
<i><b>item important to safety.</b></i> An item that is part of a 'safety group' and/or <br/>whose malfunction or 'failure' could lead to 'radiation exposure' of the <i>site <br/>personnel</i> or 'members of the public'.<br/>
'Items important to safety' include:<br/>
— Those' structures, systems and components' whose malfunction or 'failure' could <br/>
lead to undue 'radiation exposure' of 'site personnel' or 'members of the public';<br/>
— Those' structures, systems and components' that prevent 'anticipated operational '<br/>
'occurrences' from leading to 'accident conditions';<br/>
— Those features that are provided to mitigate the consequences of malfunction <br/>
or 'failure' of 'structures, systems and components'.<br/>
<i><b>protection system.</b></i> 'System' that monitors the 'operation' of a reactor and <br/>which, on sensing an abnormal condition, automatically initiates actions <br/>to prevent an unsafe or potentially unsafe condition.<br/>
<b>!</b> This use of the term 'protection' refers to 'protection' of the plant ('protection'<br/>
(2)).<br/>The 'system' in this case encompasses all electrical and mechanical devices and <br/>circuitry, from sensors to 'actuation device' input terminals.<br/>
<i><b>safety actuation system.</b></i> The collection of equipment required to <br/>accomplish the necessary 'safety actions' when initiated by the <i>protection <br/>system</i>.<br/>
<i><b>safety related item.</b></i> An 'item important to safety' that is not part of a <i>safety <br/>system</i>.<br/>
<i><b>safety related system.</b></i> A 'system' important to 'safety 'that is not part of a <br/>'safety system'.<br/>
A 'safety' related instrumentation and 'control' 'system', for example, is an <br/>instrumentation and 'control' 'system' that is important to 'safety' but which is not <br/>part of a 'safety system'.<br/>
<i><b>safety system.</b></i> A 'system' important to 'safety', provided to ensure the safe <br/>shutdown of the reactor or the 'residual heat' removal from the core, or to <br/>limit the consequences of 'anticipated operational occurrences' and <i>design <br/>basis accidents</i>.<br/>
'Safety systems' consist of the 'protection system', the 'safety actuation systems' and <br/>the 'safety system support features'. 'Components' of 'safety systems' may be <br/>provided solely to perform 'safety functions', or may perform 'safety functions' in <br/>some plant 'operational states' and non-safety functions in other <i>operational <br/>states</i>.<br/>
<i><b>safety system support features.</b></i> The collection of equipment that provides <br/>services such as cooling, lubrication and energy supply required by the <br/>'protection system' and the 'safety actuation systems'.<br/>
<b>!</b> After <br/>
a <br/>
'postulated initiating event', some required 'safety system support '<br/>
'features' may be initiated by the 'protection system' and others may be initiated <br/>by the 'safety actuation systems' they serve; other required <i>safety system support <br/>features</i> may not need to be initiated if they are in 'operation' at the time of the <br/>'postulated initiating event'.<br/>" (en)
Types (1)
Usage (26)