HCMC resolves sewer gas problem on eruption-torn street

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A sewer gas explosion ripped open a stretch of Hoang Sa Street, beneath the Bui Huu Nghia Bridge in District 1, during a heavy rain on June 16. FILE PHOTO

The Ho Chi Minh City Department of Transport said it will drill more holes into sewers shafts and replace the existing manhole covers along the two road that line the Nghi Loc-Thi Nghe canal, Tuoi Tre (Youth) newspaper reported. 
Around four months after the eruption tore through Hoang Sa Street in District 1, the department officially settled on a solution to prevent similar incidents from occurring in the future.
On June 16, the portion on Hoang Sa Street, under Bui Huu Nghia Bridge across the Thi Nghe Canal, erupted during a heavy rain. 
The explosion created two schisms on the surface of the asphalt--each more than 2 meters long and 3 centimeters wide. No injuries were caused as the street was empty at the time of the explosion. 
The transport department established that the incident occurred because vents on the sewer covers failed to expel a huge gas flow created by heavy rains, dramatically increasing the gas pressure in the sewers. 
The department will drill more ventilation holes into the sewer shafts and replace the 12 existing sewer covers along Truong Sa and Hoang Sa Streets with new mesh covers that will allow for the free flow of sewer gas.

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