Investigation of CNG Vehicle Accidents in Pakistan Reveal Actual Causes

| Pakistan | Source: Mr. Asim Riaz, Research Engineer

CNG VEHICLE ACCIDENT IN FOCUS:  ISSUES, CAUSES AND SAFETY RECOMMENDATIONS -  an article by Mr. Asim Riaz, Research Engineer/Visiting Lecturer MS Energy Engineering, International Islamic University, Islamabad, Pakistan

Over recent weeks 44 people have died in accidents involving public sector transport vehicles converted to compressed natural gas (CNG) in Pakistan, the country with the world’s largest population of natural gas vehicles.

Before discussing the technical aspects of the problem in hand, it is important to mention two things right at the outset which relate to inadequate awareness and incorrect perceptions about the CNG cylinders. It was surprising that electronic and print media persisted in erroneous reporting that the accidents occurred due to bursting/explosion of the CNG cylinders. Add to that, some of the Government departments were also relating these accidents to non-compliance of Hydrostatic testing of CNG cylinders. Both are absolutely wrong impressions. This incorrect reporting has continued to date which has developed serious apprehensions about CNG cylinders in general public.

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Pakistan Government Acts Decisively to Address CNG Concerns

| Pakistan, Islamabad | Source: Online

All Pakistan CNG Association (APCNGA) delegation plays pivotal role

Following a long period of turmoil around natural gas supply for vehicle fuel and a string of incidents contentiously associated with compressed natural gas (CNG) fuel systems, a delegation of All Pakistan CNG Association (APCNGA) has met with Prime Minister Syed Yousaf Raza Gillani about CNG load shedding, gas pricing and gas infrastructure development surcharge issues, reports Online. Discussion also covered a natural gas vehicle (NGV) safety check campaign.

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CNG is NOT for LPG Systems – Safety Bulletin

Death Trap - an illegal CNG to LPG adapter

Recent incidents in Sweden have prompted the IANGV to issue a reminder to motorists that compressed natural gas (CNG) is not suitable for cars fitted with LPG (liquefied petroleum gas or propane) systems. As LPG systems are not designed to cope with the pressure of CNG systems, components and cylinders have been known to burst with drastic consequences. Despite strict standards being enforced worldwide for CNG dispensing systems, motorists have circumvented the system using dangerous, illegally manufactured adaptors. Motivated to save a few dollars on fuel, many motorists have paid a higher price through injury and even death. Read more »