Facility and method for supplying liquefied hydrogen

A facility for supplying liquefied hydrogen, comprising:

• a source of gaseous hydrogen;
• a liquefier configured to be fed with gaseous hydrogen by the source and to produce liquefied hydrogen;
• a first liquefied hydrogen tank configured to receive liquefied hydrogen coming from the liquefier, via a first feed pipe, and being configured to store this liquefied hydrogen at a pressure which is below a first predetermined pressure;
• at least one transfer line configured to allow liquefied hydrogen to be transferred from the first tank to a tank to be filled, the transfer line being connected to the first tank by at least one transfer pipe;
• a second liquefied hydrogen tank configured to receive liquefied hydrogen coming from the first tank, via a second feed pipe, the second tank being configured to store this liquefied hydrogen;
• a pressurization system configured to allow the second tank to be pressurized at a second predetermined pressure which is greater than the first predetermined pressure;
• at least one vaporization pipe connecting the second tank and/or the pressurization system to the transfer line in order to allow gaseous hydrogen under pressure to be transferred from the second tank and/or from the pressurization system to the transfer line, for example for the purpose of an operation of purging or cleaning the transfer line;
• and
• a vaporization system configured to heat the gaseous hydrogen flowing in the vaporization pipe.