Draft text under discussion within the LNG task force concerning automatic valve requirements on LNG tanks.

Draft text under discussion within the LNG task force as of its 11th session proposing amendments to document GRSG/2013/7 concerning automatic valve provisions.

Review of four international LNG standards (ISO 12991-2012, NFPA 52-2013, SAE J2343-2008 and AS 2739-2009) for requirements related to LNG tank shut-off devices. The report discusses specific aspects and challenges of mounting two valves in series on same LNG line. The emphasis is on using two components, a manual valve and an automatic valve mounted in series on
the LNG supply line to shutoff the flow.