An indoor safety device, a liquefied fuel gas system and a vehicle

A liquefied fuel gas system, comprising:

• at least one storage device storing liquefied fuel gas;
• at least one safety valve arranged to release gas from the storage device when the pressure inside the storage device exceeds a predetermined first value;
• a vent member arranged in fluid communication with the gas inside the storage device;
• and
• an indoor safety device comprising:
• a vent coupling;
• a pressure relief valve configured to be arranged downstream of the vent coupling;
• and
• a conduit for conveying gas, configured to be connected to the pressure relief valve,
• wherein the indoor safety device is configured to be removably connected to the liquefied fuel gas system by connecting the vent coupling to the vent member, and wherein the pressure relief valve is configured to open when the pressure inside the storage device exceeds a predetermined second value, wherein the predetermined second value is lower than the predetermined first value.

A vehicle comprising a liquefied fuel gas system comprising:

• at least one storage device storing liquefied fuel gas;
• at least one safety valve arranged to release gas from the storage device when the pressure inside the storage device exceeds a predetermined first value;
• a vent member arranged in fluid communication with the gas inside the storage device;
• and
• an indoor safety device comprising:
• a vent coupling;
• a pressure relief valve configured to be arranged downstream of the vent coupling;
• and
• a conduit for conveying gas, configured to be connected to the pressure relief valve,
• wherein the indoor safety device is configured to be removably connected to the liquefied fuel gas system by connecting the vent coupling to the vent member, and wherein the pressure relief valve is configured to open when the pressure inside the storage device exceeds a predetermined second value, wherein the predetermined second value is lower than the predetermined first value.