The Object Of The Contract Is The Preventive And Corrective Maintenance Service Of The Heating And Hot Water Systems Existing In The Buildings Of The Social And Senior Citizen Services Area And The Municipal Institute Of Personal Services (Imsp) In Badalona, ​​In Order To Fulfill Rite (Regulation Thermal Installations) With Regard To The Obligation To Carry Out Various Maintenance Works Of The Systems Of Boilers, Of The Locking, Therefore, It Is Considered To Carry Out Preventive Maintenance And Another Of Corrective, In The Terms Of The Specifications Of Technical Prescriptions. The Preventive Maintenance Part Includes The "Start -Up" Protocol, Specific To Gas Appliances (Boilers And Heaters), Which Includes Analyzing The Combustion Gases Of Appliances, As Well As Checking Work On The Tightness Of The Facilities That Use Fuel Gas. This Work Will Be Carried Out In The Heating Systems Existing In The Buildings Of The Social Services And Elderly Services Area Of ​​The Badalona City Council And The Imsp'S Own Buildings.