Factorio is a game focusing on the design and management of increasingly complex logistics systems. Part of these logistic systems is the mass transportation of different items on transport belts, which provides a vast amount of different problems to solve. In this bachelor thesis we will focus on one of them, namely the load distribution between multiple belts with so called Belt Balancers. We will use Petri Nets to propose a modular system to model such a Belt Balancer and describe Belt Balancer properties commonly used in the Factorio community with linear temporal logic. Additionally we describe methods to manually and automatically verify those with PROMELA. Unfortunately we are not able to actually run those verifications for reasonably sized Belt Balancers due to internal limitations of the SPIN interpreter.