Gas Appliance Fees: $30.00 per appliance
Gas Piping Fees: Residential $75.00, Commercial/Industrial $100.00 INSP-50 - Rev. 3/2015
TOWN OF HUDSON
FIRE DEPARTMENT - INSPECTIONAL SERVICES DIVISION
12 School Street · Hudson, New Hampshire 03051 · Tel: 603-886-6005 · Fax: 603-594-1142
GAS MECHANICAL PERMIT APPLICATION
Installation Address: _________________________________________________
Business Name: ___________________________________Unit:_____________
Type of Occupancy: Residential Commercial/Industrial
Estimated Cost: _______________ Permit Fee: _____________
Office Use:
Permit#: _______
Map: _______
Lot: _______
Zone: _______
Gas Piping: New Existing Above Ground Below Ground
Piping Type: Black Iron
CSST* Poly Copper Other
*Please provide a copy of your current manufacturer’s certification.
Gas Appliance: New
Replacement
Furnace Hot Water Heater Fireplace Boiler Generator**
Other*** ___________________
**Gas Generators require a gas appliance and electrical permit. Generator permit fee includes piping permit costs.
***Appliances that do not require a permit: cooking stove and gas dryers.
Make : ____________________ Model: _______________________ Serial: _____________________________
Fuel: LP
Natural Vent Type: _____________________ Install Date: ________________________
Owner: _____________________________________
Mailing Address:_____________________________
_____________________________________________
Daytime Phone #: ___________________________
Cell Phone #: _______________________________
Email: ______________________________________
Contractor: _________________________________
Mailing Address:_____________________________
_____________________________________________
Daytime Phone #: ___________________________
Cell Phone #: _______________________________
Email: ______________________________________
Installer: ____________________________________ Cell Phone #: _______________________________
License Class: __________ License #: __________________________ Expiration Date: ____________
**License/photo ID will be required at the time of application.
Permits shall be issued in accordance with Chapter 205, Section 4 of the Hudson Town Code. Installation
shall meet all applicable codes and standards. **** Note: Permit to operate the units noted above will be
issued upon final inspection and approval.****
My signature below indicates that the installation has met all applicable National Fire Protection
Association and ICC codes and standards.
_____________________________________________ _________________________
Signature of Installer Date
____________________________________________ _________________________
Signature of Permit Clerk Date
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Gas Appliance Fees: $30.00 per appliance
Gas Piping Fees: Residential $75.00, Commercial/Industrial $100.00 INSP-50 Rev. 3/2015
TOWN OF HUDSON
FIRE DEPARTMENT - INSPECTIONAL SERVICES DIVISION
12 School Street · Hudson, New Hampshire 03051 · Tel: 603-886-6005 · Fax: 603-594-1142
GAS PIPING AND APPLIANCE REQUIREMENTS
Due to the adoption of new codes by the State of New Hampshire, the Hudson Fire
Department will now require the following:
1) Gas piping and appliances shall be installed to the currently adopted edition of
NFPA-54 as adopted by the State of New Hampshire.
2) The installer shall provide an efficiency test at the time of inspection.
3) The installer shall provide a piping sketch or plan before proceeding with the
installation. This plan shall show the proposed location of piping, the size of
different branches, various load demands and the location of the point of delivery.
4) The installer shall provide an approximate date of install and notify our office if the
date is changed.
5) The installer shall provide Hudson Fire Department with the pipe calculation
method they will be using and a copy of their calculations.
6) If installing CSST piping, installer shall provide a copy of their current
manufacturers’ certification.
7) Sediment traps for gas appliances shall be a minimum of 3 inches in length.
8) A rough inspection of the gas piping shall be conducted by Hudson Fire Prevention
including a pressure test with a pressure set at 5 PSI.
9) A final inspection of the gas piping and appliances shall be conducted by Hudson
Fire Prevention.
10) Gas piping shall not be painted before final inspection.
11) Water heaters shall have temperature limiting devices.
12) Boilers shall have temperature limiting devices, low water cutoffs and pressure
relief valves.
Gas Appliance Fees: $30.00 per appliance
Gas Piping Fees: Residential $75.00, Commercial/Industrial $100.00 INSP-50 - Rev. 3/2015
TOWN OF HUDSON
FIRE DEPARTMENT - INSPECTIONAL SERVICES DIVISION
12 School Street · Hudson, New Hampshire 03051 · Tel: 603-886-6005 · Fax: 603-594-1142
GAS LINE AND APPLIANCE HELP SHEET
Pipe Sizing
1. Size gas piping by using Table 6
2. Divide btu per hour by btu per cubic foot heating value of gas supplied
Acceptable piping materials
1. Schedule 40 steel and wrought iron
2. (CSST) Corrugated Stainless Steel Tubing
Gas Meters
1. Shall be located in ventilated spaces readily accessible
2. Shall not be placed where subject to physical damage
3. Shall be located at least 3 feet from sources of ignition
4. Shall be marked by a metal tag designating the building
Gas Piping
1. Shall be sleeved when passing through a foundation wall
2. Space between gas piping and building shall be sealed
3. Shall not be installed in or through a clothes chute, chimney or gas vent, dumbwaiter,
elevator shaft or air ducts other than combustion air ducts.
4. Shall be supported with suitable pipe hooks, metal pipe straps, bands, brackets, or
hangers
5. Piping supports shall be spaced in accordance with Table 6.2.6.2
6. Drip traps provided where necessary
Bonding and Grounding
1. Above ground piping that is likely to become energized shall be electrically continuous and
bonded to an effective ground-fault current path
2. All CSST piping must be bonded
3. Gas piping shall not be used as a grounding conductor
Pressure Test
1. Shall be no less than 1 ½ times the proposed maximum working pressure, not less than 5
PSI
2. Test duration shall be not less than ½ hour for each 500 ft of pipe volume
3. Single family dwelling test duration shall be a minimum of 10 minutes
CSST Piping
1. Minimum Support or Hanger Intervals: 4ft for ½” or below and 6ft for ¾” and above.