Boat LPG Surveys
 Your gas system should be checked regularly.

The LPG system on your boat is potentially the most dangerous item on board. Gas pipework, systems and appliances need regular checks to ensure they are safe. All systems should have a current safety compliance certificate.
Hoses degrade over time and clips become loose
Pipe fittings require tightening
Appliances require the burners cleaning
Ventilators and ventilation requires checking
Bottle lockers need surveying
Regulators need replacing
Systems require pressure testing 
Vessels on inland waterways have to be inspected for the Boat Safety Scheme which will include the gas system.
Insurance companies have realised the danger of on board gas systems and many now require regular safety checks.