It said this phase would involve the installation of three new pipelines, each about 200m long, placed inside reinforced concrete slabs for added protection and durability.

“The engineering design for this phase is being finalised and operations are expected to begin in the third quarter of 2026,” it said in a statement issued by the office of DOSH’s director-general today.

In Phase 1, a temporary pipeline measuring 210m was installed along with a special bridge-like support to stabilise the damaged section. This line will begin supplying gas today as safety tests found no leaks or pressure issues.

“DOSH emphasised that safety remains the top priority in all repair efforts,” the department said.

“All work is being carried out in full compliance with recognised international technical codes and standards, including ASME B31.8 (Gas Transmission and Distribution Piping Systems by the American Society of Mechanical Engineers).”

DOSH also said that its contractors were DOSH-registered and met all required welding and technical standards.

As an additional safety measure, Petronas has been instructed to provide access to real-time monitoring of the pipeline’s isolation valve system to allow for swift shutdowns in case of an emergency.

Yesterday, DOSH petroleum safety division director Husdin Che Amat said Petronas had identified other parts of its gas pipeline network that might be affected by similar issues following the April 1 fire.

He said the agency had held discussions with Petronas on the necessary short- and long-term actions.

Selangor police chief Hussein Omar Khan said investigations found no evidence of foul play, sabotage, or negligence. However, a special task force will be formed to determine responsibility and subsequent actions.