TSASK
TECHNICAL SAFETY AUTHORITY
O F S A S K AT C H E WA N
GAS INSPECTIONS


2020 Gas Contractor Presentation
CSA B149.1-20


                  Inspiring and Shaping Excellence in Public Safety
This presentation will cover the
substantial changes to the following
codes:
• CSA B149.1-20 Natural gas and propane
  installation code(purchase from
  https://store.csagroup.org)
• 2020 Saskatchewan Codes of Practice to CSA
  B149.1-20, (www.tsask.ca under Gas/Act &
  Regulations/Gas Codes )
    including:
    • SCOP changes caused directly by changes to
      the 2015 CSA B149.1
    • SCOP changes warranted due to experience

                         Inspiring and Shaping Excellence in Public Safety
B149.1-20 – Natural Gas and Propane Installation Code - Color
Coding in this Presentation
              • White background slides refer to the national code.


              • Light blue background slides refer to the Saskatchewan
                Codes of Practice.


              • Light grey background slides are issues specific to good
                design and workmanship



                                                           Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code
Saskatchewan Codes of Practice 2020

                  In this presentation, the slides with
                  a light blue background will refer to
                  these Codes of Practice for
                  Saskatchewan.


                                         Inspiring and Shaping Excellence in Public Safety
What are the Saskatchewan Codes of Practice?
• Collection of requirements and interpretations that are unique to
  Saskatchewan.
• Formed by:
  • amending clauses in the national code;
  • adding wording, illustrations or charts to clarify national code
    requirements; or
  • adding new clauses addressing specific issues unique to the
    Saskatchewan environment.

                                                       Inspiring and Shaping Excellence in Public Safety
Scope of this Presentation
2020 CSA code overview
• The Δ Delta Symbol (previously used to identify changes in the CSA
  codes) is no longer used by CSA.
• We will only be covering those clauses having a substantial technical
  change.
• We will cover only the technical changes to the Saskatchewan Codes
  of Practice.
• These codes will be enforced on all permits received May 1, 2021 &
  after.

                                                       Inspiring and Shaping Excellence in Public Safety
Scope of this Presentation
• The items addressed in this presentation are only to identify
  substantial technical changes to the Canadian Code and the
  Saskatchewan Codes Of Practice.
• For example -the new definition of “gas piping system” is “all
  components that convey gas or liquids, such as piping, tubing, valves,
  hoses, and fittings, from the point of delivery to the inlet of the
  appliance”. Every clause in the code that once read “gas piping or
  tubing”, now reads “gas piping system”. We will not cover these 59
  changes, clause by clause.
• You are strongly encouraged to review the 2020 Code and
  Saskatchewan Codes of Practice in their entirety.
                                                       Inspiring and Shaping Excellence in Public Safety
This presentation will proceed
through the substantial changes
to CSA B149.1-20 and will jump
to the resulting changes to the
Saskatchewan Code of Practice
to B149.1 (slides with a light
blue background) as these areas
come up.


                Inspiring and Shaping Excellence in Public Safety
3 Definitions
                Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installations - Definitions
Please refer to the code to review the following new, revised and deleted definitions:

New:      Delivery Pressure                 High Pressure Regulator
          Design Pressure                   Rated Pressure
          Fixed Liquid Level Gauge          Residential Fueling Appliance
          Gas Piping System                 Safe Location
          Line Relief Valve                 Second Stage Propane Reg.
          Lock-up (positive shut-off)       Spray Area
          Piping / Tubing                   Supply Pressure
Revised: Accessory                          Mechanical air intake
          Appliance                         Line Pressure Regulator
          Gas Connector                     Line Relief Valve
Deleted: Primary Air/ Secondary Air                                          Inspiring and Shaping Excellence in Public Safety
4 General
4.1 Application
              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installations - General
4.1.4 (revised)
Where a conflict exists between the manufacturer’s certified installation instructions
and this Code, the requirements of this Code shall prevail unless otherwise approved.

The word “certified” has been removed.
Rationale: “because not all installation instructions are certified”

Please note that in this presentation:
•Clauses with major revisions will be shown in normal type.
•Words added into a clause will be shown bold and underlined.
•Words deleted from a clause will be shown strikethrough in red .
•Comments (like these) will be in italic type with blue highlighting
                                                                       Inspiring and Shaping Excellence in Public Safety
4 General
4.7 Electrical connections and
    components
                Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – General
Old 4.7.3 (2015)
All interior metal gas piping that may become energized shall be made electrically continuous and shall
be bonded in accordance with the requirements of the local electrical code or, in the absence of such,
the Canadian Electrical Code, Part I.
New 4.7.3 (2020)
All interior metal gas piping connected to a gas-fired appliance with an electrical connection shall be
made electrically continuous and shall be bonded to the electrical system by a #6 copper or a #4
aluminum bonding conductor with the connection made accessible after the installation and in
accordance with the requirements of the local electrical code or, in the absence of such, the Canadian
Electrical Code, Part I, except where any of the following conditions are met:
a) Gas piping and tubing shall be considered to be bonded to the electrical system when it is connected
   to an appliance connected to a bonding conductor of the circuit supplying the appliances.
b) Bonding of piping other than CSST (requiring bonding per Clause 4.7.4) is not required where a gas
   appliance is not connected to an electrical circuit breaker supplying the appliances.

                                                                             Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – General
New 4.7.4 (2020)
Unless otherwise certified to protect from the effects of lightning strikes, CSST systems or CSST
contained within a piping system shall be bonded in accordance with the manufacturer’s installation
instructions and as follows:
a) a bonding conductor shall be:
   i) connected to each end of the CSST tubing; or
   ii) connected to the inlet end of the CSST tubing with the
       other end of the bonding conductor connected to the
       appliance disconnect switch or the electrical distribution
       panel; and
b) the bonding connection point at the CSST shall be to the rigid
   pipe or tubing connected to the CSST and not the CSST itself.

                                                       These illustrations are
                                                       from CSST manuals.
                                                       They are not printed in
                                                       the code.
                                                                                 Inspiring and Shaping Excellence in Public Safety
5 Pressure controls
5.1 Delivery pressure
              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
5.1 Delivery Pressure (new clauses)
5.1.2
Piping at gas pressures to central boiler or mechanical rooms which are greater than allowed for other
building locations shall not pass inside the building other than the central boiler or mechanical room.
5.1.3
A gas piping system shall be designed so that the gas pressure shall not exceed the rated pressure of any
accessory, equipment or appliance, under normal operation and in the event of a failure of an upstream
pressure regulator.
5.1.4
The delivery pressure and overpressure protection set-points as supplied by the gas utility or fuel
distributor, must be considered in the design and installation of a gas piping system, including any
modifications to an existing gas piping system.
(Please note that these light grey background slides illustrate new clauses for 2020 which prescribe
minimum national safety standards that were previously referred to as simply good design and
workmanship practices.)                                                        Inspiring and Shaping Excellence in Public Safety
5 Pressure controls
5.2 Pressure regulators
              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
5.2 Pressure Regulators (new clauses)
5.2.1.1
Gas shall be supplied to an appliances, equipment, or accessory at a normal operating pressure that is within the
pressure range specified on the appliance’s, equipment’s, or accessory’s rating plate, or as indicated by the
manufacturer’s instructions.
5.2.1.2
One or more pressure regulators in conjunction with any required overpressure protection devices shall be installed
if required to meet Clause 5.2.1.1
5.2.1.3
Every pressure regulator shall be
a) suitable for the gas;
b) of sufficient size to provide the required flow of gas;
c) factory set or field-adjusted to provide, under normal operating conditions, an outlet pressure required for the
   gas piping system at the extremes of inlet pressures to which the regulator can be exposed; and
d) capable of supplying the gas pressure as required by Clause 5.2.1.1.              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
5.2 Pressure Regulators (revised headings)




In previous editions, the code divided regulators into a) those for natural gas, and b) those for propane. This section
has been re-organized reflecting that the rules for low pressure regulators are identical for both propane and natural
gas applications for the majority of services, and that higher delivery pressure regulators (over 2 psig) require
separate rules. This is mainly a re-organization of the same rules.                      Inspiring and Shaping Excellence in Public Safety
5 Pressure controls
5.3 Overpressure protection
    devices
(renamed from 2015 – 5.3 Relief Devices)
                           Inspiring and Shaping Excellence in Public Safety
B149.1-15 Natural Gas and Propane Installation Code – Pressure Controls
Old 5.3 Relief Devices (2015)
Except as specified in Clauses 5.2.2.4 and 5.2.3, when a line pressure regulator is not
equipped with an internal relief device, it shall have immediately downstream an
overpressure protection device or a line relief device as required in Clause 5.2.1.5(b),
with a discharge setting of either
(a) not less than 2 times and not more than 3 times the delivery pressure on systems
    operating up to 5 psig (35 kPa); or
(b) not less than 1.5 times and not more than 2 times the delivery pressure on systems
    operating at more than 5 psig (35 kPa).
The relieving pressure setting of the line relief device shall be not higher than that of
the lowest-rated component or accessory located downstream.
This was the 2015 code rule covering relief devices for line pressure regulators which
for 2020 has been completely rewritten.                          Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
New 5.3 Relief Devices Overpressure protection devices (2020)
5.3.1 Except as permitted in Clause 5.3.2, a line pressure regulator or a high pressure regulator shall be
provided with an overpressure protection device.
Note: Class I line pressure regulators certified to ANSI Z21.80/CSA 6.22, and rated for inlet pressures of
either 5 psig (35 kPa) or 10 psig (70 kPa), are supplied with factory-installed overpressure protection
devices to limit the downstream pressure to 2 psig (13.8 kPa) in the event of failure of the regulating
mechanism, which is acceptable for certified appliances with a maximum inlet gas pressure of 14 in wc.
See Annex K.
5.3.2 Where a line pressure regulator is certified to ANSI Z21.80/CSA 6.22 and if the inlet pressure to the
line pressure regulator is 2 psig (14 kPa) or less, an overpressure protection device shall not be required.
5.3.3 Where the outlet pressure of a pressure regulator is greater than 14 in wc (3.5 kPa), the setting of
the overpressure protection device shall be set in accordance with Table 5.2.
5.3.4 An overpressure protection device shall be set to operate at the pressures specified in Table 5.2.
Additionally, if an internal relief valve or line relief valve is used as the overpressure protection device, it
shall be sized to fully relieve the rated capacity of the line pressure regulator.
(please note the two references to Table 5.2)
                                                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls




                                                  Table 5.2 is no longer the
                                                  Clearance from Discharge Table.
                                                  Table 5.2 is the now the new
                                                  Overpressure protection device
                                                  (OPD) setpoint table.




                                                    Inspiring and Shaping Excellence in Public Safety
B149.1-15 Natural Gas and Propane Installation Code – Pressure Controls
Old (2015)


                                                This was the previous Table 5.2 -
                                                the clearance from discharge
                                                Table. Please note the 2nd column
                                                title -clearances from a “CSA
                                                6.22-certified overpressure
                                                protection device.” Since
                                                SaskEnergy service regulators do
                                                not comply, this column was
                                                largely ignored in Saskatchewan.



                                                     Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
New 2020



                                           The new Table 5.3 contains the
                                           same rules, where the permission
                                           to use the reduced clearances
                                           shown in the 2nd column is
                                           changed to read “as permitted”
                                           by the new clause 5.6.4.




                                                       Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
New 5.6.4
The discharge from overpressure protection devices, relief devices, and internal relief valves, and the termination
of any other vent not eligible to be vented into a ventilated space, shall terminate outdoors with the clearances
specified in Table 5.3.
The clearances in Table 5.3 may be reduced for natural gas in accordance with the second column of this table
where a pressure regulator meets the following requirements
(a) the service regulator is certified to CSA 6.18 and equipped with an overpressure shut-off device;
(b) the pressure regulator is certified to ANSI Z21.80/CSA 6.22 and equipped with a vent limiting device that vents
    gas at a rate not exceeding 2.5 scf/h (0.0706 m3/h) or less; or
(c) the pressure regulator is equipped with an overpressure shut-off device which vents gas at a rate not exceeding
    2.5 scf/h 0.076 m3/h) or less.
Note: The reduced clearances from SaskEnergy regulators to building openings, outlets, intakes, and sources of ignition are
permitted only for those service regulators having high pressure shut-off.
SaskEnergy service regulators having high pressure shut-off (meeting {a} above), are usually farm-service regulators that are
painted red.
Most residential service regulators (painted grey) have low-pressure-shutoff only and therefore are not eligible for the reduced
clearances.                                                                                      Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
Clause 5.5.4 is re-written as Clause 5.5.2.1 – Added wording underlined in bold
5.5.2.1
Except as specified in Clause 5.5.5, when a pressure regulator with internal relief or a line relief valve is installed, it
shall be vented separately to a safe location outdoors by a vent line
(a) of steel pipe, or of seamless steel tubing or copper tubing or corrugated stainless steel tubing (CSST) that
      complies with Clause 6.2; and
(b) of a size
      (i) at least equal to the nominal pipe size of the vent outlet of the valve or regulator increased as specified by
           the manufacturer’s instructions and for CSST increased by one pipe size diameter; or
      (ii) in the absence of manufacturer’s instructions, increased by one pipe size diameter for every 50 ft (15 m)
            or part thereof that the vent line extends beyond the initial 50 ft (15 m). This increase shall be made at
            the connection on the device.

This clarification eliminates SCOP’s 5.5.1 and 5.5.4 that disallowed CSST as a permissible material for vent lines. Gas
Inspections stresses that if CSST vent lines cannot be installed without being protected from kinking or damage, this
provision will be reviewed.

                                                                                           Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Pressure Controls
New clauses to compile previous requirements and to detail the adequacy of the ventilation required for an area to
be considered a ventilated space.
5.5.4.2
For line pressure regulators with inlet pressure of 5 or 10 psig (35 or 70 kPa), a line pressure regulator shall be
exempt from compliance with Clause 5.2.1.8 provided that
a) the pressure regulator is equipped with a leak limiting system orifice to limit the escape of gas from the vent
    openings, even in the event of a main diaphragm failure, to less than 2.5 ft3/h (0.0706 m3/h) of a gas having a
    specific gravity of 0.6;
b) the pressure regulator is equipped with an overpressure protection device consisting of either a monitoring
    regulator or an overpressure shut-off device, which is
    i) set to limit the downstream pressure to 2 psig (14 kPa) or less; and
    ii) supplied as a complete unit with the line pressure regulator;
c) the pressure regulator and its overpressure protection device is certified to ANSI 21.80/CSA 6.22; and
d) the pressure regulator is installed in a ventilated space.
5.5.4.3
For the purpose of Clause 5.5.4, a space shall be considered to be a ventilated space where the accumulation of gas
in the space does not exceed 25% of the lower explosion limit of the gas.
                                                                                      Inspiring and Shaping Excellence in Public Safety
6 Piping and Tubing Systems,
  Hose and Fittings
               Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.2.2 (added wording underlined in bold)
A fitting used with steel pipe shall be
(a) either malleable iron or steel and shall comply with the material selection requirements of CSA Z662:
     or the applicable ASME B16 series of standards; or
(b) certified to Standard ANSI LC-4/CSA 6.32.
When schedule 80 pipe is required, the                                  What does
minimum class of fitting used with the                                  this mean?
pipe shall be class 300.
                                                                        (see next slide)
This new note in the code eliminates SCOP clause:
6.2.3.1 All fittings on schedule 80 piping systems
shall be minimum Class 300.
(Please note the slides which are outlined in light blue in this presentation. These reflect changes in the Saskatchewan
Code of Practice for CSA B149.1-20 which are in response to the changes made to the national code).

                                                                                       Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.2.2.1 (New SCOP)

“CSA 6.32/ANSI LC-4” is the certification code for “Press-Connect Metallic
Fittings For Use In Fuel Gas Distribution Systems” such as ViegaMegaPressG.



This SCOP is to simply clarify that Press-Connect Fittings are permitted by
clause 6.2.2


                                                        Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.2.3 (rewritten –significant added wording underlined in bold)
A gas piping system using natural gas or propane vapour phase with operating pressures up to and
including 125 psig (860 kPa) shall comply with either the following:
(a) Piping shall be at least sch-10 for NPS ½”-to-2”. When using sch-10 to less than sch-40, piping shall be
    located indoors and joints shall use fittings certified to CSA 6.32/ANSI LC-4.      alias; Press Connect
(b) Piping shall be at least sch-40 for NPS 2½”-to-10”.
(c) Pipe larger than NPS 10 shall be at least standard weight.
A gas piping system using natural gas or propane vapour phase with operating pressures exceeding 125 psig
(860 kPa) and all liquid piping systems shall comply with either of the following:
(a) For pipe sizes up to and including NPS 10.
    (i) Piping shall be at least sch-40 when using welded or flanged joints
    (ii) Piping shall be at least sch-80 when using threaded joints. Threaded joints shall be threaded or
         threaded and back welded.
(b) Pipe larger than NPS 10 shall be at least standard weight.
                                                                             Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.9.1 (added wording underlined in bold)

Joints in steel piping shall be threaded, flanged, press-connected, or welded, and shall be
as permitted in Clause 6.15.2. When mating flanges, they shall be of the same face type
and rating.




This new wording in the code eliminates SCOP clause:
6.9.1.1
A raised-face flange shall connect to a raised-face flange. A flat-faced flange shall connect
to a flat-faced flange.
                                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.9.4 (the strikethrough text is replaced with everything below)
The acceptance criteria for any welds shall
be as specified in Clause 7.10.2 of CSA Z662 or other approved methods.
(a) for design pressures greater than 250 psi (1720 kPa), comply with the visual and radiographic
    inspection requirements of Clause 7 of CSA Z662 or other approved methods;
(b) for design pressures between 100 psi (700 kPa) and 250 psi (1720 kPa), be in accordance with the
    visual and radiographic inspection requirements of Chapter IV of ANSI/ASME B31.3; or
(c) for design pressures of 100 psi (700 kPa) and less, be by visual inspection of the external weld
    surface, as well as the internal weld surface where accessible without the use of special tools.
Acceptance criteria of the weld shall be in accordance with the requirements of Annex J.
Notes:
1) For clarification, the use of the word “inspection” in CSA B149.1 means the same as “examination” in
   ANSI/ASME B31.3.
2) Hand mirrors and flashlights are not considered to be special tools.
                                                                            Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.16.15 (added wording underlined in bold)
The piping or tubing entering a building shall be protected from vehicular damage by one of the following means:
(a) Posts shall
    (i) be not less than 12 in (300 mm) from the riser, regulator, or equipment;
    (ii) be spaced not more than 42 in (1050 mm) apart;
    (iii) be buried not less than 36 in (900 mm) below grade;
    (iv) extend at least 30 in (760 mm) above grade; and
    (v) be one of the following:
          (1) 4 in (100 mm) capped steel pipe;
          (2) 4 in (100 mm) tubing filled with concrete;
          (3) 8 in (200 mm) pressure-treated wood, either square or round; or
          (4) 6 in (150 mm) minimum dimension reinforced concrete.
(b) Guardrails shall be
    (i) not less than 12 in (300 mm) from the riser, regulator, or equipment;
    (ii) of the steel deep beam type, 12 in (300 mm);
    (iii) supported by 6 in (150 mm) minimum pressure-treated wooden posts, either square or round, located not more than
          42 in (1050 mm) apart, centre to centre and buried not less than 36 in (900 mm) below grade; and
    (iv) located so that the top of the beam is not less than 24 in (610 mm) nor more than 30 in (760 mm) above grade.
                                                                                       Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.18 Manual shut-off valves (added wording underlined in bold)
6.18.1
A manual shut-off valve shall be of the plug, ball, or eccentric type certified to CSA 3.11, CSA
3.16, or ANSI Z21.15/CSA 9.1, or approved for use with gas, and it shall not be subjected to
either a temperature or a pressure outside of its certified
rating range.

New SCOP
6.18.1.1
A manual shut-off valve on a liquid propane piping system shall be certified to UL 125, or
approved for use with liquid propane.

(Gas Inspections will continue to accept NACE rated valves where necessary for sour gas service.)
                                                                        Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.23 Purging of gas piping systems after leak testing

This entire section on purging has been revised for clarity. On the next two
slides we will present …..
• New clause and Table providing the conditions under which a system
    must be purged to the outdoors, and
• Conditions under which a system may be purged indoors.




                                                        Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
New clause & Table providing the conditions under which a system must be purged outdoors
6.23.1 A gas piping system shall be purged to the outdoors using approved engineering practices or in
accordance with Clauses 6.23.2 through 6.23.4 where it meets either of the following:
  a) the gas pressure in the gas piping system is greater than 2 psig (14 kPag); or
  b) the gas piping system being purged contains one or more sections of pipe, tubing, or gas hose meeting
      the size and length described in Table 6.4.




                                                                               Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
Conditions under which a system may be purged indoors
6.23.6 A gas piping system not meeting the conditions specified in clause 6.23.1 may be purged either
a) to the outdoors, in accordance with clause 6.23.4, or
b) to the indoors, in accordance with clause 6.23.7, or
c) in accordance with good engineering practice.

6.23.7 When the conditions in clause 6.23.6 allow it, a gas piping system shall be purged in an indoor space
only in accordance with one of the following options:
a) The gas in the piping system shall be ignited at an appliance having an input rating up to and including 400
   000 Btu/h (120 kW) with a readily accessible burner not located in a combustion chamber. Such burner
   shall be provided with a continuous source of ignition and a continuously burning flame shall be
   maintained at the burner port(s) until a stable gas flame is established; or
b) For an appliance not equipped with a continuous pilot, in accordance with the procedure described in
   Annex H shall be used at an appliance not equipped with a continuous pilot.
c) When there is an open point of discharge during the purge, it shall be continuously attended by a qualified
   person.
                                                                                 Inspiring and Shaping Excellence in Public Safety
7 Installations of Specific
  Types of Appliances
                Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Installation of Specific
Types of Appliances

(added wording underlined in bold)

7.20.9
The outdoor intake of a DFMAH shall be located not less than 20 ft (6 m) horizontally
from a vertical plane in which combustible gas, vapour, or dust is present.




                                                               Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Installation of Specific
Types of Appliances
7.31 Lighting
New 7.31.4
Ventilation shall be provided when a lighting appliance is installed or used in an
enclosure. The ventilation openings shall be at the top of the enclosure or as high as
possible at the top of it and at the bottom of the enclosure, not less than 12 in (300
mm) above the outside grade level. The openings shall be of a minimum of 4 square
inches for each lighting appliance installed or used.

There were two deaths in the Northwest Territories in the winter of 2013 -2014 due to gas lights,
mounted in a hunter’s cabin with insufficient ventilation, running overnight.


                                                                             Inspiring and Shaping Excellence in Public Safety
8 Venting Systems and Air
  Supply for Appliances
              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Venting Systems and Air
Supply for Appliances
(added wording underlined in bold)

8.5.4
Except as permitted by Clause 8.5.6, an automatically operated damper or
automatically adjustable louvre shall be interlocked so that the main burner cannot
operate unless either the damper or louvre is in the fully open position.

(see next slide for new clause 8.5.6, conditions under which a damper or louvre
interlock is not required………..)



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B149.1-20 Natural Gas and Propane Installation Code – Venting Systems and Air
Supply for Appliances
New 8.5.6
For emergency generators, stand-by generators, or firewater pumps, the combustion air damper interlock is not
required, provided
a) the intake combustion air dampers and the ventilation air dampers, if provided separately, are sized for a
    maximum face velocity of 500 fpm (2.5 m/s);
b) the combustion air dampers and ventilation air dampers
    i) fail open on loss of power;
    ii) open on a generator run command from the generator control panel; and
    iii) fail open fully in under 30 s;
c) the combustion air damper remains open at all times while the generator is operating;
d) the ventilation air damper remains open for at least the first 30 s after start of all dampers moving to the open
    position;* and
e) the combustion air damper is equipped with a position switch that is set at least at 85% open to annunciate an
    alarm to a supervised location if the damper is not proved open after 30 s.
* The intent is for the ventilation air damper to go to its fully open position and not come under temperature
control (if provided) until the combustion air damper is also fully open.
                                                                                      Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Venting Systems and Air
Supply for Appliances

New 8.5.6
For emergency generators, stand-by generators, or firewater pumps, the combustion
air damper interlock is not required, provided …………

These new conditions (shown on that last slide) under which a damper or louvre
interlock is not required, effectively eliminates the need for this SCOP:
8.5.4 An automatically operated damper or automatically adjustable louvre shall be
interlocked so that the main burner cannot operate unless either the damper or
louvre is in the fully open position. Stationary engines and turbines are exempt from
this requirement (7.2.1.3)

                                                               Inspiring and Shaping Excellence in Public Safety
Annexes

          Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Annexes
New Annexes
• Annex J -Acceptance criteria for visual inspection of welds (New Annex derived from Z662 -see
  clause 6.9.4 earlier in this presentation)
• Annex K -Pressure regulators and overpressure protection devices (New Annex to aid in the
  proper selection -see clauses 5.2.1.7 and 5.3.1 next slide)
• Annex L -Recommended requirements for automatic safety shut-off valves and automatic vent
  valves installed on gas turbines having capacities greater than 12.5 MMBtu/h (3.66 MW) and
  inlet pressures greater than 150 PSI (New Annex when outside the certification criteria for CSA 6.5
  C/I valves)
• Annex M -Requirements for the operation of appliances at shows, exhibitions, or other similar
  events (New Annex for temporary gas appliances on display –see new clause 7.35 below)
• Annex N -Generators, compressors/pressure boosters, engines, and turbines (Some of the
  stationary engine requirements which were relocated to CSA B149.3-20 have been reprinted in this
  B149.1 Annex for the information of the installer.)
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B149.1-20 Natural Gas and Propane Installation Code – Annexes
New Annexes
5.2.1.7 A pressure regulator shall have
a) a manual shut-off valve installed upstream of the pressure regulator; and
b) an overpressure protection device in accordance with Clause 5.3.
Note: Refer to Annex K regarding certified line pressure regulators and overpressure protection devices.
5.3.1 Except as permitted in Clause 5.3.2, a line pressure regulator or a high pressure regulator shall be provided
with an overpressure protection device.
Note: Class I line pressure regulators certified to ANSI Z21.80/CSA 6.22, and rated for inlet pressures of either 5
psig (35 kPa) or 10 psig (70 kPa), are supplied with factory-installed overpressure protection devices to limit the
downstream pressure to 2 psig (13.8 kPa) in the event of failure of the regulating mechanism, which is acceptable
for certified appliances with a maximum inlet gas pressure of 14 in wc. See Annex K.
New Annex K (informative)
Pressure regulators and overpressure protection devices
This Annex is designed to help in the selection process for pressure regulators and overpressure protection devices
depending upon the situation.
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B149.1-20 Natural Gas and Propane Installation Code – Installation of Specific
Types of Appliances
New 7.34 Operation of appliances at shows, exhibitions, or other similar events
The operation of appliances at shows, exhibitions, or other similar events shall comply with
Annex M and meet any additional requirements of the authority having jurisdiction.

New Annex M (normative)
Requirements for the operation of appliances at shows, exhibitions, or other similar events
This Annex applies to appliances that are designed to be used outdoors or vented to the
outdoors, but are on display at shows, exhibitions, or other similar events.
An appliance may be operated and vented indoors if it meets the requirements of this Annex,
and the appliance is only operated for the purpose of demonstrating its operation.
. . . we all hope to one day have public spring home shows again . . .

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B149.1-20 Natural Gas and Propane Installation Code – Annexes
New Annexes
• Annex L -Recommended requirements for automatic safety shut-off valves and
  automatic vent valves installed on gas turbines having capacities greater than
  12.5 MMBtu/h (3.66 MW) and inlet pressures greater than 150 PSI(see CSA
  B149.3-20)
• Annex N -Generators, compressors/pressure boosters, engines, and turbines(see
  CSA B149.3-20)

The relocation of several of the requirements for engines/turbines, to CSA B149.3 for the purposes of
field approval of these types of gas-fired equipment, leaves a knowledge-gap in references that are
also important awareness for the installer.
These two Annexes provide a means to close that knowledge-gap where necessary.

                                                                             Inspiring and Shaping Excellence in Public Safety
    Thank you for reviewing the first section of this
 presentation of the substantial changes to B149.1-20
and the resulting changes to the Saskatchewan Code of
               Practice to CSA B149.1-20
 The next section of this presentation provides changes
to the Saskatchewan Code of Practice to CSA B149.1-20
           resulting from recent experiences.

                                         Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code
Saskatchewan Codes of Practice 2020


                  The remainder of this presentation will
                  detail technical changes to this
                  document, the Saskatchewan Codes of
                  Practice for CSA B149.1-20.



                                           Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – General
4.3.9 (added wording underlined in bold)
Installers activating any appliance shall fill in all information on an appliance
activation tag and hang the tag on the gas line in an accessible location proximal to
the appliance. Activation Tags may be those purchased from Gas Inspections, or
may be of the gas contractor’s company design provided that the same
information is provided at minimum. Gas appliances that have supply and return
duct work attached to them shall have the date tested, the tested temperature rise,
and the manifold pressure during the test recorded. This data shall be displayed
prominently, either on the supply plenum with a permanent marking device in a
legible manner, or in the start-up sheet accompanying the installation manual and
left on site..
Note -“This data shall be displayed” replaces “They shall be recorded”
                                                                 Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – General
New SCOP
4.11 ISOLATION OF SAFETY DEVICES
4.11.1 Where burners are required to operate constantly, then a locked-open manual valve
to isolate a safety limit control may be installed for servicing, maintenance or testing
purposes. This valve shall only be closed if the gas-fired equipment under the protection of
the safety limit control has constant manual supervision while the safety limit control is out
of service. A documented work procedure submitted and acceptable to Gas Inspections shall
be followed during use of each such isolation valve.
Note –This permission is only offered to plant or similar environments having a Car-Seal safety
program for critical operation of valves and controls.


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B149.1-20 Natural Gas and Propane Installation Code – General
New SCOP
4.11 ISOLATION OF SAFETY DEVICES

4.11.2 In a plant environment where a relief valve terminates into a common flare header, a
locked-open full port manual valve may be used to isolate the flare header from the relief
valve discharge for maintenance purposes. This valve shall only be closed if the gas piping
system under the protection of the relief valve has been completely depressurized and is out
of service. A documented work procedure submitted and acceptable to Gas Inspections shall
be followed during use of each such isolation valve.

Note –This permission is only offered to plant or similar environments having an approved
Pressure Relief Path (PRP) Stop Valve Control (SVC) Program registered with TSASK.

                                                                     Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
4.23 PROTECTION OF APPLIANCES FROM PHYSICAL DAMAGE
New SCOP
4.23.1
When appliances are installed in locations that do not afford protection from damage
from motor vehicles, they shall be protected by posts or guardrails in compliance
with CSA B149.1-20 clause 6.16.15 or other equivalent means of acceptable
protection.

This includes protecting all pad-mounted appliances which may be subject to damage
from motor vehicles.

                                                              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.7 LOCATION
New SCOP
6.7.7
Gas piping systems installed in an aggressive environment including, but not limited
to, intensive livestock barns, and potash mines, shall not use materials with low
tolerance for these conditions. The use of CSST, schedule 10 steel piping, or brass
fittings and components, on gas piping systems in these environments is prohibited.
Where the source for corrosion is a component of the gas stream, such as sour
oilfield or digester gas, low tolerance materials, such as CSST, schedule 10 steel
piping, or brass, shall not be allowed in contact with the gas stream.
Piping must be at least schedule 40. Stainless steel is acceptable.
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B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
(Please refer to national code rule 6.8.8 which is unchanged in CSA B149.1 for 2020)
6.8.8 When a gas supply header is NPS 2-1/2 or larger, the branch line connection may be a
job-fabricated welded fitting, provided that the branch line does not exceed 50% of the pipe
diameter of the gas supply header, and in no case shall the branch connection be less than
NPS 3/4.
(The SCOP to this clause has been revised for clarity. The added wording to the Code of Practice is
underlined in bold)
(2020 SCOP) 6.8.8 Job-fabricated welded fittings (for example, branch connections job-
fabricated using the stub-in and back-welding method in CSA B149.1-20) are NOT allowed
in any gas piping system. Branch connections on steel gas piping systems shall use a
manufactured fitting, such as a tee, weld-o-let, or thread-o-let, meeting the material
selection criteria of CSA B149.1-20 clause 6.2.2.
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B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.11 APPLIANCE CONNECTIONS (added wording underlined in bold)
6.11.1.1
Except as permitted by S.C.O.P. 6.11.1.2, where an appliance is connected to a
flexible piping or tubing system, connection to the appliance shall be outside the
cabinet and into a tee fitting containing a drip pocket and rigid piping that extends
to the appliance gas valve.
6.11.1.2
A flexible piping or tubing system, may be used with a protective sleeve to:
a) penetrate the cabinet of a mobile/manufactured home furnace, or
b) penetrate the cabinet of a fireplace.

                                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.15 UNDERGROUND PIPING & TUBING (added wording underlined in bold)
6.15.2
Underground steel piping systems shall only be joined below grade by welding.
Underground polyethylene piping systems shall only be joined below grade by
butt fusion, socket fusion, electrofusion, or mechanical fittings certified to CSA
B137.4 (such as “Permasert” or “Con-Stab”), except for underground piping
systems in active landslide areas (see Appendix K) in which case all mechanical
fittings underground are prohibited.



                                                              Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.15 UNDERGROUND PIPING & TUBING
(added wording underlined in bold)
6.15.13.1
The gas supply to underground piping or tubing shall be controlled by a shut-off
valve located above ground near the point of entry to the ground, and by a shut-
off valve situated above ground at the point of exit from the ground located
between the point of exit from the ground and the outdoor appliance or
building being served. The underground permit holder is responsible for
ensuring that these two valves are installed.


                                                             Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.15 UNDERGROUND PIPING & TUBING (added wording underlined in bold)
6.15.16
Electrical wiring may be installed in the same trench as customer-owned propane or natural
gas lines provided the electrical wiring is placed at a greater depth with at least 12” (300
mm) earth separation. Clearance can be reduced to 6” (150 mm) of earth separation if a
treated plank is installed between the gas line and electrical wiring. All underground
electrical installations must still have a suitable marking tape buried halfway between the
cable and grade level, and the tape must extend the entire length of the trench containing
the electrical cable.

Note: the treated plank is no longer specified
as 2x6; a 2x4 treated plank is acceptable.
                                                                     Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.22 TESTING OF PIPING, TUBING, HOSE (added wording underlined in bold)
6.22.2.1
All copper and polyethylene piping systems shall be leak tested using air or inert
gas (such as nitrogen) as the test medium. All steel piping systems where the test
pressure generates a stress below 30% of Specified Minimum Yield Strength (SMYS)
of the piping material, shall be leak tested using air or inert gas as the test medium.
Only under special circumstances will Gas Inspections permit liquid hydrostatic
testing of piping systems, (see 6.22.1.3 regarding applications to Gas Inspections
for approval to use a liquid as the test medium).
Example test pressures equating to a stress of 30% SMYS for steel piping systems are
given in Appendix C.
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B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.22 TESTING OF PIPING, TUBING, HOSE
6.22.1.3 For test pressures exceeding a stress of 30% of SMYS:
a) both a leak and a strength test are required following the testing requirements and
   limitations of CSA Z662;
b) 100% of all welds have successfully passed radiographic inspection; and
c) dry air, inert gas or liquids are permissible as the leak and strength test medium on
   natural gas piping, provided the test and purge procedures have been approved by the
   Chief Gas Inspector. Liquid freezing temperature must be significantly lower than the
   potential ambient temperature during the test. Purge procedures must include a liquid
   removal and disposal plan, and a plan for drying the gas piping system to an acceptable
   dewpoint of 0°F (-18°C). Liquids are not permissible as a test medium on propane piping
   systems.

                                                                    Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.22 TESTING OF PIPING, TUBING, HOSE and FITTINGS
The following notes under Table 6.3 refer to propane M.A.O.P.:
* Propane maximum operating pressure is defined as
a) 250 psi (1725 kPa) for piping and tubing operating at container pressure;
b) 350 psi (2400 kPa) when connected to the outlet of a pump or compressor; or
c) 375 psi (2570 kPa) minimum or the setting of the hydrostatic relief valve in piping that can contain liquid
    propane, that can be isolated by valves, and that requires hydrostatic relief valves as specified in Clause 5.4.1
    of this Code or Clause 5.6.1 of CSA B149.2.
New SCOP for proper test pressure of propane piping and tubing.
The test pressure of propane piping or tubing shall be 1.5 times the maximum operating pressure.
a) 250 psi propane piping and tubing operating at container pressure shall be tested to 375 psi;
b) 350 psi propane piping and tubing connected to the outlet of a pump or compressor shall be tested
   to 525 psi; and
c) 375 psi liquid propane piping shall be tested to 562.5 psi
                                                                                        Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.22 TESTING OF PIPING, TUBING, HOSE and FITTINGS
New SCOP
6.22.7
Where the operating pressure of the gas piping system is being increased, the
entire gas piping system affected by the change in operating pressure must be
retested in compliance with CSA B149.1-20 clause 6.22., including situations
where the new pressure test duplicates the parameters of the original pressure
test.



                                                            Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Gas Piping Systems
6.22 TESTING OF PIPING, TUBING, HOSE
(added wording underlined in bold)
6.22.8
On all installations of a piping or tubing system, the installer shall
fill in all information on the complete a Piping Verification Tag and hang the tag on
the gas line in an assessable location proximal to the work performed. Piping
Verification Tags may be those purchased from Gas Inspections, or may be of the
gas contractor’s company design provided that the same information is provided
at minimum.


                                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Boilers
7.1.4.4 Boiler Low Water Cut-off Requirements




                    (deleted)




(See next slide for its replacement)
                                                    Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Boilers
7.1.4.4 Boiler Low Water Cut-off Requirements

7.1.4.4.1
When the boiler is located above the lowest point in the heating system, a safety
control to protect against low water conditions must be present as part of the
certified appliance or must otherwise be installed.


(Gas Inspections will accept the manufacturer’s device and type that they choose to
use internally to protect their boiler from a low water condition. If not described in
the manufacturer’s instructions, then an external LWCO must be installed.)

                                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-15 Natural Gas and Propane Installation Code – Engines
7.2 Generators, compressors/pressure boosters, engines, and turbines - Old SCOP (2015)
7.2.1.9 The ventilation required by CAN/CSA clause 7.2.1.5 shall be interconnected with a gas detector that:
a) is installed in accordance with the detector manufacturer’s instructions for the type of gas;
b) is set to activate at gas detection levels at and above one-fifth of the lower limit of flammability;
c) upon activation, produces an audible and visual alarm;
d) is interlocked with the mechanical ventilation system; and
e) is interlocked to shut off the appliance.→ Not required in Saskatchewan!
Note: This clause will only apply to gas fired stationery engines, not of the direct vent type, located in public
buildings or buildings normally occupied. An interlocked gas detector is not required for:
  i) gas fired engines located in stand-alone buildings not normally occupied;
  ii) gas fired engines of the direct vented type; and
  iii) residential applications where direct vent combustion is employed.
Gas Inspections will refer to the NFPA 101 Life Safety Code definition of “occupied” as “any time a building is
open to the public, or at any other time it is occupied by more than 10 persons.”

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B149.1-20 Natural Gas and Propane Installation Code – Engines
7.2 Generators, compressors/pressure boosters, engines, and turbines
    New SCOP (2020)
7.2.1.9 The ventilation required by CAN/CSA clause 7.2.1.5 shall be interconnected with a gas
detector that:
a) is installed in accordance with the detector manufacturer’s instructions for the type of gas;
b) is set to activate at gas detection levels at and above one-fifth of the lower limit of flammability;
c) upon activation, produces an audible and visual alarm;
d) is interlocked with the mechanical ventilation system
CSA B149.1-20 requirement 7.2.1.9(e) “is interlocked to shut off the appliance” is not
mandatory in Saskatchewan. See Appendix F for gas detection concentration unit conversions.
The wording of this SCOP has been simplified.
(Same Rationale: To lock out an emergency genset at a rural water treatment plant due to a minor
gas leak would likely cause a boil water advisory should a power outage occur while the genset is
locked out. Engaging the mechanical ventilation system will provide an adequate level of safety.)
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B149.1-20 Natural Gas and Propane Installation Code – Engines
7.2.5 Additional requirements for gas
(this clause is renumbered but otherwise is unchanged for 2020)
7.2.5.3
An engine or turbine shall be installed in a room that has a minimum 2 h fire
separation from the remainder of the building, and the room shall have a fire door
having a 1.5 h fire protection rating on every opening that communicates with other
sections of the building. The door shall not have a glass panel or vent and shall be of
the swinging automatic-closing type, gasketed on all sides, including the top and
bottom, to prevent natural gas or propane from entering other sections of the
building.

(See next slide for new SCOP to this clause)
                                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Engines
7.2.3 Additional requirements for gas engines and turbines in buildings
New SCOP –these are examples only of how to meet 7.2.5.3
7.2.5.3
Examples of acceptable construction for walls with a 2 hour fire resistance rating includes:
a) Brick construction –minimum 4” thick.
b) Wood stud framing, 16” on centre, mineral-fibre insulated between studs and covered
    with gypsum board drywall, minimum 1” thickness on each side (such as two ½” thick
    gypsum boards, overlayed on each side).
c) Minimum 2.5” thickness of gypsum drywall sandwiched between metal cladding on each
    side.

(Source: Appendix D of The National Building Code 2015)
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B149.1-20 Natural Gas and Propane Installation Code – Furnaces
7.13 CENTRAL FURNACES




          (deleted)




(Not required. Covered by clause 4.18.)
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B149.1-20 Natural Gas and Propane Installation Code – Venting
8.10 METHODS OF VENTING APPLIANCES
8.11 e) Exterior Masonry Chimneys (REVISED)
When removing the largest (or major) Category I gas appliance vented into an exterior masonry
chimney, the masonry chimney may not continue to be used unless it is lined with a properly sized B
vent, L vent or an approved double wall liner. As well, the chimney must be boxed in and insulated
such that the building provides a heated space for the chimney. One method of ensuring that the
chimney is provided adequate heat is to have the three exterior sides of the boxed-in chimney
insulated to at least twice the insulated value of the existing building wall. All repairs to existing
masonry chimneys serving gas fired appliances must comply with these requirements. Note: This rule
does not apply to Category 2, 3 or 4 venting, nor does it apply to any appliances with special venting
systems.
(The requirement to box-in and insulate an external masonry chimney in this situation has been
withdrawn.)
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B149.1-20 Natural Gas and Propane Installation Code – Venting
8.10 METHODS OF VENTING APPLIANCES

8.11 f) Existing Type A Factory Built Metal Chimneys and Other Insulated metal
        chimneys (added wording underlined in bold)
        iii) When the furnace is replaced with a sidewall vented appliance and the
             water heater is the only appliance left to vent into the class “A”, the
             chimney shall be down sized as per table C1 or C2.
        iv) If oversized (water heater only), reduce in size in accordance with code
             requirements and use a certified B vent or approved chimney liner. When
             the water heater only is in an oversized Type "A" chimney and the
             water heater is replaced, the chimney shall be replaced as per table C1
             or C2.
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B149.1-20 Natural Gas and Propane Installation Code – Venting
8.12    CHIMNEYS
CSA B149.1-20 reads:
8.12.10 A metal chimney liner shall provide a continuous lining from the base inside the
space where the appliance is located to the top of the masonry chimney flue, and it shall
comply with the requirements of ULC S635. It shall be installed in accordance with the
manufacturer’s instructions.
(New SCOP)
8.12.10 (a) Where a vent cap is installed as part of a lining system, adequate space must
be provided between the flashing and vent cap to prevent a buildup of ice which could
block the flow of products of combustion. Clearance between flashing and vent cap shall
be between 5” (125 mm) and 12” (300 mm).

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B149.1-20 Natural Gas and Propane Installation Code – Venting
8.13 VENT AND CHIMNEY SIZING
(New SCOP)
8.13.4 All residential vents or chimneys shall be sized using the “DP”
column in the tables in Annex C of the CSA B149.1.


Residential homes are likely renovated in the future to reduce drafts.



                                                        Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Venting
8.14 VENT AND CHIMNEY TERMINATION (see also Appendix A)
CSA B149.1-20 reads:
8.14.8 A vent shall not terminate:
h) underneath a veranda, porch, or deck unless
   i) the veranda, porch, or deck is fully open on a minimum of two sides beneath
        the floor; and
   ii) the distance between the top of the vent termination and the underside of the
        veranda, porch, or deck is greater than 1 ft (300 mm).
(New SCOP)
h) (iii) The 1 ft (300 mm) min. clearance to the underside of the veranda, porch or
         deck shall be measured from the top of the vent to the bottom of the joists.
                                                                Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Appendix B
      (New chart) Appendix B –Sizing
   Maximum capacity of Liquid Propane
          (in thousands of Btu/h)
 for copper tubing, or Schedule 80 piping
gravity fed from a propane tank (no pump)
 Reference chart for sizing liquid propane lines.
    Note that piping sizes are O.D. and tubing
                   sizes are I.D.
  Flow rates shown in brackets (red italics) are
    considered too low to be protected by a 4
   USGPM excess flow valve mounted on the
 tank. You must be in the black to meet B149.2
                  clause 7.4.8.1
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B149.1-20 Natural Gas and Propane Installation Code – Appendix G

                                                          (revised)
                                                         Emergency
                                                            Flood
                                                         Guidelines




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B149.1-20 Natural Gas and Propane Installation Code – Appendix G
                                                          (revised)
                                                         Emergency
                                                            Flood
                                                         Guidelines

                                                These Guidelines have been
                                                   revised to provide the
                                                 Mechanical Industry, the
                                                 Insurance sector, and the
                                                  public, with clarity and
                                                        consistency.

                                                  Inspiring and Shaping Excellence in Public Safety
B149.1-20 Natural Gas and Propane Installation Code – Appendix K
(New worksheet) Appendix K
Worksheet for Unvented Heaters in Livestock and Poultry Barns
This worksheet is designed to assist in the calculations to meet code specifics of clauses 7.23.1 and 8.24.5 of
CSA B149.1. All requirements of CSA B149.1 must be in compliance, including clauses 4.9, 7.23 and 8.24 in
their entirety including all sub-clauses. This worksheet is an aid-only for the following two calculations:
7.23.1 Where an infrared heater is of the unvented type, it shall
(e) be provided with mechanical ventilation
    ii) that has a ventilation volume of at least 300 cfm for each 100,000 Btu/h input or fraction thereof;
NOTE: 300 cfm per 100,000 Btu/h input (or fraction thereof) is the minimum ventilation volume acceptable
to Gas Inspections to meet the standard of the term, “adequately ventilated space”, used in CSA B149.1,
particularly clause 8.24.5.
8.24.5 When located in a large and adequately ventilated space, an appliance may be operated by
discharging the combustion products directly into the space, subject to the approval of the authority having
jurisdiction and provided that the maximum input of the appliance does not exceed 20 Btu/h/ft3 (0.2
kW/m3) of the space in which the appliance is located.
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B149.1-20 Natural Gas and Propane Installation Code – Appendix K

                                          (New worksheet) Appendix K
                                       Worksheet for Unvented Heaters in
                                          Livestock and Poultry Barns

                                      This is a new worksheet to provide the
                                        owner with a step-by-step guide to
                                      completing the necessary calculations
                                          for unvented heaters in a barn.
                                         The permit holder must verify the
                                       calculations and provide them to the
                                                   gas inspector.


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B149.1-20 Natural Gas and Propane Installation Code – Appendix L



                                                    (returning)
                                                    Appendix L
                                                  Gas Inspection
                                                 District Contacts




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B149.1-20 Natural Gas and Propane Installation Code – Appendix L



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                                                 Appendix L
                                               Gas Inspection
                                              District Contacts




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B149.1-20 Natural Gas and Propane Installation Code – Appendix L



                                                    (returning)
                                                    Appendix L
                                                  Gas Inspection
                                                 District Contacts




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B149.1-20 Natural Gas and Propane Installation Code – Appendix L



                                                 (returning)
                                                 Appendix L
                                               Gas Inspection
                                              District Contacts




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B149.1-20 Natural Gas and Propane Installation Code – Appendix L



                                                 (returning)
                                                 Appendix L
                                               Gas Inspection
                                              District Contacts




                                                   Inspiring and Shaping Excellence in Public Safety
 Thank you for reviewing this presentation of the substantial
 changes to B149.1-20 and the changes to the Saskatchewan
                Code of Practice to CSA B149.1-20
  If you have any questions, please ask. It is likely that others
      have the same question. Please contact your local gas
                          inspector, or
                   Doug Hird, Senior Engineer
                    Gas Codes and Standards
                      doug.hird@tsask.ca
We will be posting on-line a running Q&A so no question goes
                         unanswered.              Inspiring and Shaping Excellence in Public Safety
