The criticisms connected with the traditional approach for variance analysis of conversion cost focused on using variance of volume for measuring exploitation of productive capacity, and negligence of increasing in the production, also using working
hours, and the time of machines working as a basis for counting carrying rates of conversion costs, and counting the variance.
When variance analysis was not restricted in determined group of changes, and the changes which are used in the analysis can change according to what develops and appears of situations and needs, so variance analysis in its present form does not provide suitable information about the competitive attitude of economic unit from costing side.
Therefore, it is necessary to improve and modify the traditional method of variance analysis of conversion cost under needs and strategies of modern industrial systems, to fit the variance analysis in a way that treats the criticisms which were directed to this style, the role of standard costs system in support of control systems and performance correction, and achievement the strategy of continuous improvement.
The research tries to study the criticisms which were directed to the traditional method of variance analysis of conversion cost, then to apply the modern method of variance analysis of conversion cost, and which suits with requirements of modern industrial environment, in company of Banias Refinery, and the researcher reaches to series of results, the most important of those are:
The changes which happened in modern industrial environment affected the traditional analysis of variance of conversion cost;
The traditional analysis of variance of conversion cost doesn't encourage the continuous improvement;
The traditional analysis of variance of conversion cost doesn't refer to movements of stock in its different types; and
The total variance of conversion cost in company of Banias Refinery is
(-399845730) , that is actual conversion cost bigger than standard conversion cost to the actual production.
The variances analysis of direct materials cost in its current image doesn't provide suitable information about the competitive attitude of
economic units from costing side, and doesn't encourage to continuous improvement, and doesn't suitable or su
fficient to modern industrial environment. therefore it should development the traditional analysis tovariances of direct materials cost, paying attention to needs and strategies of modern industrial systems for treatment the criticisms that are directed to this style and improves from role of standard costing system in support of control systems and performance evaluation, and achievement the strategy of continuous improvement.
Where of past, the researcher prepared suggested framework for development of variances analysis of direct materials cost, which suits
with requirements of modern industrial environment, and its application on company of Banias refinery. and the research reaches to series of results, the most important of those are:
The changes which are happened in modern industrial environment didn't led to collapse and disappearance role of standard costing system, and waiving from one of its ways, it is analysis of cost variances.
The traditional analysis to variances of direct materials cost doesn't refer to movements of stock, and doesn't refer to efficiency of the
buying, production and selling processes.
