The best way to approach requirements analysis is a process of parallel analysis. The designing of any software system starts from its scratch of requirement analysis because requirements are building blocks of a system. SysML tool is the System Modelling Language tool used for the graphical representation of the requirements using Requirements Diagram. Requirements given by the user are the relationships in the real world and application domains but not about the software system or the interface with the software system. These are the basic philosophies of problem frames (PF) approach which is a requirement analysis technique. Here in this paper we discuss about the SysML tool usage on the problem domain given to the analyser and the application of PF approach in decomposing and analysing the requirements to develop the requirements statement which will be given to the design phase to be recursively analysed and the system will be developed. The paper deals with the above mentioned approach to the modelling of requirements of the Critical Goods Transportation Monitoring System that proves to be the best analysis technique of requirements for the mentioned system so far. © 2005 - 2012 JATIT & LLS. All rights reserved.