Definicija: Oznaka za položaj relejev oziroma ventilov. Normalno zaprt rele ima kontakte sklenjene, kadar ni krmilne napetosti; normalno zaprt ventil med normalnim obratovanjem ne prepušča medija.
Vir - besedilo: Pojmovnik jedrske tehnike in varstva pred sevanji, Društvo jedrskih strokovnjakov Slovenije, 2012, http://www.djs.si/
Definicija: A nomenclature, integrating customs tariff and statistical nomenclatures, legally required by a Contracting Party for the declaration of goods at importation (1). Based on the Harmonized System (q.v.) replacing the CCT (q.v.) and NIMEXE nomenclatures (Nomenclature of Goods for the External Trade Statistics of the Community and for Statistics of Trade between Member States) (2).