State regulators on Wednesday lifted their moratorium on National Grid gas work, infuriating locked out gas workers, but ordered the utility to adhere to what officials called “an unprecedentedly high standard,” including a new requirement to have work plans approved by a certified professional engineer.

The order from the Department of Public Utilities (DPU) would essentially apply the parameters of Gov. Charlie Baker’s gas safety bill and other new safety protocols to National Grid while also easing the moratorium on all non-emergency and non-compliance work across the utility’s service territory, an administration official said.

Commercial real estate industry officials have said the moratorium was having a “huge impact” by preventing properties from obtaining needed gas hookups.

National Grid, which locked out about 1,200 of its gas workers in June and has been found by DPU to have potential violations of federal pipeline safety regulations, will now be able to conduct non-compliance and non-emergency work but it must conform to the new rules imposed Wednesday by DPU.

The DPU order requires that any non-emergency National Grid gas work be reviewed by an engineer and given a professional engineer’s seal before taking place. The company will also be required to lay out step-by-step instructions for its work in “task specific operating procedures” and employees must now have specific levels of experience to conduct certain work.

National Grid employees must now have at least five years of experience to conduct work on low-pressure gas service lines, 10 years of experience to work on intermediate-pressure service lines and 15 years of experience to work on high-pressure service lines, according to the administration.

The order also requires the company to report each day to the DPU on the number of inspectors present at every location where it conducted gas pipeline work. If National Grid does not follow the new directives, it will face fines of up to $200,000 per violation and $2 million for each continuing violation.

Baker had expressed hope that the moratorium will help force an end to National Grid’s labor dispute with 1,200 locked out gas workers. In October, Baker said, “I think one of the ways we get them back to work is by demonstrating to National Grid that they’re not going to be able to do any more work outside their statutory obligations until they put them back to work.”

John Buonopane, president of United Steelworkers Local 12012, told the News Service he was “very disappointed” that Baker lifted the moratorium.