Division of Labor and Industry


Keep Your Boiler Room Safe - High Pressure Boilers - Boiler and Pressure Vessel Safety - Safety Inspections


Keep Your Boiler Room Safe - High Pressure Boilers (Word document, download Word viewer for free)

Objective: To educate the public on the safe and proper use of High Pressure (Power) Boilers


Do Not---

  • Permit unqualified personnel to operate a boiler. Maryland Stationary Engineers License is required over 30 BHP Capacity.
  • Operate a boiler without an adequate source of combustion air.
  • Operate a boiler without a valid Certificate of Inspection issued by Safety Inspection Unit DLLR State of Maryland.
  • Store flammables in the Boiler Room.


  • Respect the boiler it can be dangerous.
  • Have the boiler inspected internally annually, as required by State Law.
  • Report to the Chief Boiler Inspector for the boilers to be installed, at least 30 days prior to installation.
  • Test safety devices on a periodic basis (as recommended by CSD-1 or NFPA 85) and log the tests.
  • Inspect the boiler daily for proper operation.
  • Allow only authorized ("R" stamp holder) repair firms to make weld repairs.


  • Keep your Boiler Room clean.
  • Keep a check on leakages and rectify without delay.
  • In an emergency, remain calm and use the emergency devices.
  • In case of fire operate Emergency cut off switch.
  • Maintain a Log of Boiler Operations, Maintenance, Repairs, Tests.
  • Keep the Boiler Room ventilated.

Do Not----

  • Operate a boiler which is not constructed in accordance with the American Society of Mechanical Engineers (ASME) Boiler & Pressure Vessel Code.
  • Operate a boiler unless it is equipped with a safety valve with sufficient relieving capacity, set at or below the maximum allowable working pressure.
  • Bypass the pressure controls, temperature controls, low water cutout, flame safety or any other limit switch or control.
  • Restrict the function of a safety valve, such as by reducing or plugging the outlet or inlet, painting or removing it.
  • Leave the boiler room unattended.

We are here for your protection.

For additional information, contact:
Division of Labor and Industry
Elevator and Escalator Safety

1100 N. Eutaw Street - Room 601
Baltimore, MD 21201
Fax: 410-333-7721
e-mail: dldlisafetyinspection-dllr@maryland.gov

Emergency telephone number: 410-767-2990