Alert Homeowners: Is It Safe to Use Galvanized Pipe for Natural Gas in Ontario?

In the realm of home plumbing, one of the most prevalent questions that arises is whether galvanized pipe can be utilized for natural gas in Ontario. This blog post aims to provide a comprehensive guide to this topic, delving into the intricacies of natural gas piping regulations and the suitability of galvanized pipe for such applications.

What is Galvanized Pipe?

Galvanized pipe is a type of steel pipe that has been coated with a layer of zinc to protect it from corrosion. This coating extends the lifespan of the pipe and enhances its durability. Galvanized pipes have been commonly used in plumbing systems for decades, but their use with natural gas has raised concerns.

Natural Gas Piping Regulations in Ontario

The Technical Standards and Safety Authority (TSSA) is the governing body responsible for regulating natural gas piping installations in Ontario. According to TSSA requirements, only specific types of piping materials are permitted for natural gas applications.

Can You Use Galvanized Pipe for Natural Gas in Ontario?

The answer to this question is a resounding no. The TSSA explicitly prohibits the use of galvanized pipe for natural gas distribution. This is primarily due to the potential for hydrogen embrittlement.

Hydrogen Embrittlement

Natural gas contains trace amounts of hydrogen, which can react with the zinc coating on galvanized pipe over time. This reaction leads to a process known as hydrogen embrittlement, where the pipe becomes brittle and susceptible to cracking. The weakened pipe can pose significant safety hazards, including gas leaks and explosions.

Alternative Piping Materials for Natural Gas

Since galvanized pipe cannot be used for natural gas in Ontario, alternative piping materials must be employed. The TSSA approves the following materials for natural gas distribution:

• Black steel pipe
• Copper pipe
• Corrugated stainless steel tubing (CSST)
• Polyethylene (PE) pipe

Considerations for Choosing Piping Materials

When selecting a piping material for natural gas, several factors must be taken into account:

• Pressure rating: The piping material must be able to withstand the operating pressure of the natural gas system.
• Corrosion resistance: The material should be resistant to corrosion from both natural gas and environmental factors.
• Durability: The piping material should have a long lifespan and be able to withstand the rigors of underground installation and operation.
• Cost: The cost of the piping material and installation must be considered.

Installation and Maintenance

Natural gas piping installations must be performed by licensed and certified gas fitters. Proper installation is crucial to ensure the safety and reliability of the system. Regular maintenance and inspections are also essential to detect any potential issues and ensure the system remains in good working order.

Final Thoughts: Navigating the Maze of Natural Gas Piping Regulations

The use of galvanized pipe for natural gas in Ontario is strictly prohibited due to the risk of hydrogen embrittlement. Alternative piping materials, such as black steel pipe and copper pipe, must be used in accordance with TSSA regulations. By adhering to these regulations and choosing appropriate piping materials, homeowners and businesses can ensure the safety and reliability of their natural gas systems.

Quick Answers to Your FAQs

Q: Why is galvanized pipe not allowed for natural gas in Ontario?
A: Galvanized pipe is not allowed for natural gas due to the potential for hydrogen embrittlement, which can lead to pipe cracking and safety hazards.

Q: What are the approved piping materials for natural gas in Ontario?
A: The TSSA approves black steel pipe, copper pipe, corrugated stainless steel tubing (CSST), and polyethylene (PE) pipe for natural gas distribution.

Q: Who should install and maintain natural gas piping?
A: Natural gas piping installations and maintenance should be performed by licensed and certified gas fitters to ensure safety and compliance with regulations.