August 30, 2019 / 5:13 PM / 2 months ago

Toxic chemical at PES refinery mostly cleared, aiding probe of June blaze

Aug 30 (Reuters) - Most of a highly toxic chemical stored at a fire-damaged Philadelphia oil refinery has been rendered inert, clearing the way for closer inspections of the site following a June blaze that led to the plant’s closure, officials said on Friday.

About 340,000 pounds of hydrofluoric acid (HF) stored at Philadelphia Energy Solutions was chemically neutralized, Philadelphia Fire Commissioner Adam Thiel said in a briefing. HF can burn the skin and form a potentially deadly fog at room temperature.

The process “substantially reduces the risk to the community,” Thiel said, noting some HF acid still remained at the site. Initial phases of the fire probe, including data gathering, have largely been completed, Thiel said.

HF is used by more than one-third of U.S. refineries in the alkylation process to make high-octane gasoline. Labor unions and environmentalists have urged it be replaced, particularly in densely populated areas.

PES’ alkylation unit was destroyed in a fire and series of blasts on June 21 just minutes after the chemical was dumped into a safety vessel. The HF in that vessel has been neutralized, Thiel said.

Removing the HF will allow investigators, including the U.S. Chemical Safety and Hazard Investigation Board, to physically examine damaged areas of the refinery.

Since the fire, PES has closed the refinery, which was the largest and oldest on the East Coast, and filed for Chapter 11 bankruptcy. .

Most of the roughly 1,100 PES workers have been laid off without health benefits, including 640 union employees.

PES on Thursday asked the bankruptcy judge to hire an investigations and crisis management attorney to advise the company on the seven federal, state and local investigations into the cause of the June blasts, court documents show.

The refiner has agreed to retain about 80 union employees as a caretaker group until the last of the HF is neutralized. Afterwards, the number of workers will be reduced, according to an agreement reached last week, which is subject to bankruptcy court approval. (Reporting by Laila Kearney in New York; Editing by Gary McWilliams and Tom Brown)

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