NF S62-111-6:2008 Fixed firefighting systems - Gas extinguishing systems - Part 6 : physical properties and system design of gas extinguishing systems for HFC 23 extinguishant.
2008NF S62-111-6:2008 Fixed firefighting systems - Gas extinguishing systems - Part 6 : physical properties and system design of gas extinguishing systems for HFC 23 extinguishant.