Power of bureau and commission to refuse to grant,

suspend or cancel a license. The bureau may refuse to grant a license to any applicant and may request the commission to suspend or cancel the license of any licensee if it appears to the bureau upon hearing, as provided in the LPG and CNG Act, that an applicant or licensee has violated or failed to comply with any provision of law relating to LP gas or CNG or with any rule, regulation or order of the bureau or commission or that any licensee has demonstrated that he is incompetent or lacks knowledge in matters relevant to a license to such an extent that, in the judgment of the bureau, it would endanger the public safety to allow the licensee to continue to engage in LP gas or CNG activities or operations.