Emergency and Stand-by power systems are regulated by 527CMR § 27. http://www.mass.gov/dfs/osfm/fireprevention/cmr/527027.pdf

The fire department is responsible to review the fuel storage installation of emergency and stand-by power systems. This applies to fuel oil systems only. The fire department does not regulate natural gas systems.

Permits-Installing Contractor
A permit to install a generator fuel oil system is required prior to the installation. The following documents are required to be submitted to obtain a permit:

• Application to install fuel storage for emergency or back-up generator
• Engineered plans or specification sheets for the fuel system
• Plot plan or floor plan indicating the location of the generator and fuel supply
• Construction documents indicating the fuel storage room specifications

Permits-Generator System Owner
Once the contractor has applied for a permit to install the fuel system, the owner of the system must apply for a permit to store and use the fuel. The following documents are required to be submitted to obtain a permit:

• Application for Annual Flammable Storage Permit
• Fire Marshal UST Permits if storage tank is underground
  • SFMO Form FP290 Parts 1&2
  • SFMO Form FP290 Part 3

License-Property Owner
If the fuel system exceeds the exempt amounts listed in 527CMR § 14, then a license must be applied for. The following documents are required to be submitted to obtain a license: Important, the following documents must be submitted to the License Commission.

• License application
• SFMO Form FP5 - Certificate of Registration 
• Plot plan indicating the location of the property and surrounding properties

The State Fire Marshal Forms can be downloaded from the SFMO website at 
   http://www.mass.gov/dfs/osfm/forms/index.htm