Gas Leaks from Improper Installations: Why Following Safety Guidelines Matters
Gas pipe leaking in your home? Learn how SEM Engineering PTE LTD fixes dangerous installations by following proper welding procedures and City Energy guidelines. Don’t risk your family’s safety—choose certified gas specialists.
5/21/20252 min read
Gas Leaks from Improper Installations: Why Following Safety Guidelines Matters
At SEM Engineering PTE LTD, we’ve seen firsthand how cutting corners in gas pipe installations can lead to dangerous and costly problems. A recent job in Singapore revealed a critical issue that could have easily escalated into a safety hazard—one caused by ignoring basic gas safety rules.
When gas pipes are installed through concrete walls, the standard safety regulation is clear: no CC (compression coupling) fittings should be used inside the wall structure. Why? Because buildings, especially HDB flats and commercial properties, experience micro-vibrations over time due to natural settling, wind, and minor seismic shifts.
These vibrations may seem small, but when CC fittings are buried within concrete, they are prone to loosen or fail, resulting in gas leaks that are both hard to detect and extremely dangerous.
In the case we responded to, the previous contractor had ignored this crucial guideline and installed gas pipes using CC fittings inside a wall. To "seal" it, they used silicone mold—a temporary and unreliable solution. This method is not compliant with City Energy and EMA gas regulations, and worse, it failed, causing a gas leak that led the customer to call us.
When our licensed team arrived on site, we immediately identified the breach of standards and got to work. Here’s how we handled it:
Removed the faulty section with the illegal CC fittings.
Reinstalled the gas piping using certified welding methods, as per Singapore’s gas safety standards.
Conducted leak detection and pressure testing to ensure complete safety.
Secured City Energy clearance to make sure everything was fully compliant.
Our team prioritizes both the safety of your family and the safety of our field engineers, which is why we strictly follow proper protocols for every gas pipe installation or repair.


What Went Wrong: The Dangers of CC Fittings Inside Concrete Walls
How SEM Engineering PTE LTD Solved the Problem
Why You Should Always Hire Licensed Gas Specialists
Many homeowners are unaware of what happens behind their walls. That’s why it’s so important to hire certified professionals like SEM Engineering PTE LTD—because we don’t just fix problems, we prevent future risks.
We are:
✅ Licensed and EMA-Certified
✅ Experienced with City Energy regulations
✅ Quick to secure job clearance
✅ Focused on customer and worker safety
✅ Transparent with our methods and pricing
Final Thoughts: Don’t Let Poor Workmanship Put You at Risk
If you suspect gas pipe issues or if your current system was installed years ago without a proper inspection, it’s time to act. Leaks can go unnoticed but have serious consequences.
📞 Call SEM Engineering PTE LTD today for a safe, regulation-compliant gas pipe inspection or repair. We’ll help you sleep easier, knowing your home is secure.


Proper Installation of gas pipes running through the concrete wall was done by SEM Engineering PTE LTD.
Breaking guidelines while installing gas pipelines running through a concrete wall.
SEM Engineering PTE LTD
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UEN: 202232271M | EMA Gas Licence: GA/1422/2017
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