Utah Code § 30-3-5.2
When, in any divorce proceeding or upon a request for modification of a divorce decree, an allegation of child abuse or child sexual abuse is made, implicating either party, the court, after making an inquiry, may order that an investigation be conducted by the Division of Child and Family Services within the Department of Human Services in accordance with Title 80, Chapter 2, Child Welfare Services, and Title 80, Chapter 2a, Removal and Protective Custody of a Child. A final award of custody or parent-time may not be rendered until a report on that investigation, consistent with Section 80-2-1005, is received by the court. That investigation shall be conducted by the Division of Child and Family Services within 30 days of the court's notice and request for an investigation. In reviewing this report, the court shall comply with Sections 78A-2-703, 78A-2-705, and 78B-15-612.
Utah Code § 30-3-5.2