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Database terminologico |
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Seguendo i link presenti all'interno della scheda è possibile accedere ai testi legislativi di riferimento, ai diagrammi concettuali in cui appare il concetto, nonché ad altre schede del database terminologico correlate dal punto di vista concettuale o linguistico al concetto in esame.
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Nominal protection factor |
Domain: Health and safety at work => Preventive measures => Personal protective equipment
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| Grammatical category: | Noun phrase |
| Grammar notes: | Countable |
| Definition: | Theoretical protection level of a respirator based on laboratory measured performance data. Calculated by dividing 100 by the maximum allowed Total Inward Leakage value as specified in the relevant Standard. For example: EN149 class FFP3 has a maximum allowed total inward leakage of 2%. 100 divided by 2 equals 50. Therefore the NPF of an FFP3 respirator is 50. |
| Definition source: | Occupational Health & Environmental Safety - Glossary for Respiratory Protection |
| European legislation: | Directives 89/391/EEC, 89/656/EEC, 89/686/EEC |
| British legislation: | The Personal Protective Equipment Regulations 2002 |
| Contained in: | |
| Variants: | NPF |
| Related terms: | |
| It: | |
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