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Que signifie le C.S.O. sur un plan CAD ?

2019-06-18View Original

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Sur le plan CAD, on voit une valve avec l’indication C.S.O à côté ; la légende ne donne aucune explication non plus. Pourriez-vous m’expliquer, chers professeurs, ce que cela signifie ?
Reply #22019-06-18
CSO (car sealed open) scellé ouvert – ne pas fermer sans autorisation; CSC (car sealed closed) – Serrure de plomb : interdit d’ouvrir sans autorisation.
Reply #32020-03-09
Explication des termes de GB50316, mais savez-vous dans quelles conditions il est utilisé ?

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