Follow above link to G1 Assessment Regulations and scroll down to clause 13.2 and G5 - review of Marks or Grades Awarded for Specific Assessment Tasks
If you believe that you've been disadvantaged in the marking of an assignment there are procedures to follow to get a remark.
Initially you are required to seek clarification and feedback from the Subject Coordinator. If this comes to nought you must write to the Head of School documenting specifically where you believe you've been unfairly marked. You should also attach the marked copy and a blank copy of the assignment, and your application should be submitted within seven days from when you received your assignment back. There is no fee for the review of a fail grade, however a fee is payable for review of a passing mark, which is refunded if the review is successful.