The Massachusetts Fuel Gas Code is comprised of the
following:
(1) For most installations
of gas piping systems in Massachusetts, the Board adopts NFPA 54 as modified by
248 CMR
5.00:
Amendments to NFPA 54 . The
scope of this adoption shall be governed by NFPA 54 Chapter 1, Administration,
subject to the following modifications:
(a)
Replace NFPA 54 sub-section 1.1.1.1(A) with the following:
Jurisdiction of gases as defined in subsection 3.3.51 of NFPA
54 shall extend from the point of delivery to the provided connections with
each gas utilization device as follows:
1. For natural and manufactured gas systems,
the point of delivery shall be considered the outlet of the service meter
assembly or the outlet of the service regulator or service shut off valve where
no meter is provided.
2. For
undiluted liquefied petroleum gas systems, the point of delivery shall be
considered the supply source, or, if it exists, the outlet of the first
regulator located at the cylinder/vessel.
3. This code shall regulate piping systems in
permanent structures, buildings under construction, as well as exterior
installations.
(b)
Replace NFPA 54 sub-section 1.1.1.1(B) with the following:
All gas piping systems shall be low pressure, not in excess of
0.5 P.S.I.G. or 14 inch water column. Systems may exceed these requirements if
designed and installed in accordance with
248
CMR
5.05(4)(B).
(c) Delete NFPA 54 sub-section 1.1.1.2 and
replace with the following:
The provisions of NFPA 54 shall not apply to applications
utilizing acetylene, hydrogen, ammonia, carbon monoxide, oxygen, or nitrogen;
such installations shall be governed by 248 CMR 4.03(6).
(d) Delete NFPA 54 section 1.4
(2) For installations of undiluted
liquefied petroleum gas not explicitly covered by NFPA 54 as modified, the
Board adopts NFPA 58 as modified by
248 CMR
8.00:
Amendments to NFPA 58 . The
scope of this adoption shall be governed by NFPA 58 Chapter 1, Administration,
subject to the following modifications:
(a)
Delete NFPA 58 sub-section 1.1 and replace it with the following:
1.1 Scope. This code applies to the
installation of undiluted liquefied petroleum gas systems and
appliances.
(b) Delete NFPA
58 sub-section 1.3.1 and replace it with the following:
1.3.1 Application of the Code. This
code shall apply to the installation of undiluted liquefied petroleum gas
systems commencing upon the point of delivery. For purposes of this code, the
point of delivery shall be considered the supply source, or, if it exists, the
outlet of the first regulator located at the cylinder/vessel. This code shall
regulate piping systems in permanent structures, buildings under construction,
as well as exterior installations.
(c) Delete NFPA 58 subsections 1.3.2(3), (4),
(5), (6) and (11)
(3) For
installations of fuel gas boilers with an input of 12,500,000 BTU per hour or
greater or fuel gas fired steam generators, the Board adopts NFPA 85 chapters 1
to 8. The scope of this adoption shall be governed by NFPA 85 Chapter 1,
Administration, subject to the following modifications:
(a) Delete NFPA 85 sub-section 1.1 and
replace it with the following:
1.1 Scope. This code applies to the
installation of single burner boilers, multiple burner boilers, and atmospheric
fluidized bed boilers with a fuel input rating 3.7 of MWt (12.5 million BTU/hr)
or greater. This code also applies to fuel gas fired steam generators used to
recover heat from combustion turbines and other combustion turbine exhaust
systems at any heat input rate. However, this code shall not be deemed to apply
to any equipment that does not utilize a fuel gas.
(b) Delete NFPA 85 sub-sections 1.1.8, 1.1.9,
and 1.1.9.1.
(4) For
installations of fuel gas fired ovens, dryers, furnaces, thermal oxidizers, and
other heated enclosures used for the processing of materials and related
equipment, the Board adopts NFPA 86. The scope of this adoption shall be
governed by NFPA 86 Chapter 1, Administration, subject to the following
modifications:
(a) Modify NFPA 86 sub-section
1.1.7 by adding sub-section 1.1.7(5) as follows: Installations of equipment
that utilize oil or any other non-gas liquid fuel.
(b) Delete NFPA 86 sub-section 1.3.5, 1.3.7,
and 1.3.8.
(5) All
installations of fuel gas utilization equipment not governed by NFPA 85 or 86
(as amended) having inputs over 400,000 BTU per hour per combustion chamber
shall be governed by
248 CMR 7.00:
Large
Gas Utilization Equipment .
(6) For all other fuel gas installations not
referred to, including, but not necessarily limited to, installations of piping
systems conveying acetylene, hydrogen, ammonia, carbon monoxide, oxygen,
nitrogen, or any other gas used as a fuel gas, from the supply source, or, if
it exists, beyond a gas meter outlet or regulator, the system must be designed
by a Massachusetts registered professional engineer. The design must assure
that the piping installation, including pipe sizing, dimension, and other
aspects, meet the requirements for proper functioning, safety, and this code.
The installer must submit drawings to the Inspector stamped by the engineer
reflecting this design prior to being issued a permit.
