If it thereafter appears to the division that the tank or boiler is unsafe and that the requirements contained in the preliminary order should be complied with, or that other things should be done to make the tank or boiler safe, the division may order or confirm the withholding of the permit and may make such requirements as it deems proper for the repair or alteration of the tank or boiler, or the correction of the dangerous and unsafe conditions.
Ca. Lab. Code § 7689