PECO technicians made mistakes, forged report

According to the NTSB documents, a PECO technician did not perform "bar hole testing" before the explosion, which is a standard test to detect and measure gas leaks.

The report says the technician was aware that he should have run the test in this situation but forgot.

Another PECO technician had limited experience with the indoor meter style in the nursing home, which was a 1940s model.

The PECO tech told the NTSB that the day of the explosion was the first time he had seen an indoor valve like the one that was leaking in the basement of the Bristol Health and Rehab Center in Bucks County.