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PESO Rule 35 Compulsory 3-Year Certification

CNG Cylinder Hydro Testing in Chennai

Locate verified PESO-approved CNG cylinder hydrostatic testing stations in Chennai, Tamil Nadu. Ensure 3-year statutory compliance, avoid ₹10,000 traffic fines, and secure your official green fitness certificate.

🏢 Network: Torrent Gas 🧪 Pressure: 330 Bar Hydrostatic 💰 Standard Fee: ₹1,500 - ₹2,000 ⏱️ Turnaround: 3 - 4 Hours 🛡️ Statutory: PESO Gas Rules 2016
⛽ Need to refill after testing? View All CNG Stations in Chennai →

Authorized Hydro-Testing Workshops in Chennai

Government-recognized test forecourts equipped with water-jacket expansion testing and ultrasonic flaw detection

PESO Certified ⏱️ 4 hours

Chennai PESO Cylinder Hydro-Testing Lab (Ambattur)

PESO Code: PESO/TN/CHN/2021/512
Estimated Fee: ₹1,700 - ₹2,200

📍 South Phase, Ambattur Industrial Estate, Chennai, Tamil Nadu 600058

Tests Conducted
✓ Torrent Gas Approved ✓ Hydrostatic Expansion 330 Bar Test ✓ Collar Punching ✓ Fitness Certificate
Helpline: +91 44 2625 1890
🗺️ Navigate to Testing Center ↗
Statutory Protocol

The 5-Step PESO Hydrostatic Testing Procedure

Standard operating procedure prescribed by PESO (Petroleum & Explosives Safety Organisation) for CNG cylinder re-certification:

Step 1: Degasification Residual CNG is safely purged through nitrogen blanketing to ensure zero volatile vapors remain inside the vessel.
Step 2: Internal Inspection An endoscope camera inspects the interior vessel walls for pitting, corrosion, or hairline micro-fractures.
Step 3: 330 Bar Hydro Test The cylinder is submerged into a water jacket and pressurized to 330 Bar (1.5x working pressure) to measure permanent volumetric expansion.
Step 4: Tare Weight Check The cylinder is dried and weighed. If wall thinning exceeds 5% of original manufacturer tare weight, the cylinder is condemned.
Step 5: Collar Punch & Stamp A metal compliance plate is affixed to the brass collar with the test date and center code, and a digital QR certificate is uploaded to Parivahan.
💬 Cylinder Safety FAQs

Frequently Asked Questions about CNG Testing in Chennai

Is CNG cylinder testing mandatory in Chennai?

Yes. Under Rule 35 of the Gas Cylinder Rules, 2016 issued by the Petroleum and Explosives Safety Organisation (PESO), Ministry of Commerce and Industry, every automotive CNG cylinder must undergo hydrostatic testing every 3 years. Driving with an overdue cylinder attracts a ₹10,000 fine under the Motor Vehicles Act, and authorized CGD pumps (Torrent Gas) are legally prohibited from refueling non-compliant vehicles.

What is the standard cost for CNG cylinder testing in Chennai?

Government-regulated testing charges in Chennai typically range between ₹1,500 and ₹2,200 depending on vehicle class (private passenger car vs. commercial taxi/auto). This includes cylinder de-gasification, hydrostatic water-jacket testing at 330 bar, tare weight re-verification, collar plate date punching, and issuance of the digital Green Fitness Certificate.

How long does the cylinder hydro-testing process take?

Hydrostatic re-testing takes approximately 3 to 4 hours. You can drop off your vehicle or standalone cylinder in the morning and collect the certified cylinder with the freshly punched brass collar plate and QR fitness certificate the same afternoon.

Where is the Adani / PESO authorized cylinder testing center near Ahmedabad & Adalaj?

For motorists in Ahmedabad, Gandhinagar, and Adalaj, the primary PESO-authorized forecourt is located opposite Adalaj Trimandir on the Sarkhej-Gandhinagar (SG) Highway. It handles standard 60L, 75L, and cascade cylinder testing with same-day compliance plate delivery.