DEFINITION OF LOGISTICS ACTIVITIES DURING BUILDING OF A CONCRETING PLANT. Janka ŠADEROVÁ, Peter BINDZÁR

Transcription

1 DEFINITION OF LOGISTICS ACTIVITIES DURING BUILDING OF A CONCRETING PLANT. Janka ŠADEROVÁ, Peter BINDZÁR Technical University of Kosice, Kosice, Slovak Republic, EU, janka.saderova@tuke.sk, peter.bindzar@tuke.sk Abstrakt: In this paper is the analysis of the mixing plant construction project which includes the structure of the project schedule, the application MS Project using and risks of project. There are defined logistics activities under the project based on the analysis Keywords: project planning, construction of concrete plant, logistics activities. 1. INTRODUCTION Many companies or business organizations are doing various projects that have some specific properties and rules. Non-respecting of that rules can lead to failure of the project goals or economic waste. Problem of project management is wide-spreaded and is solved by many authors. The term of Project management is not only understood as management but also includes project organization and coordination [1].,,Project management is understood as process of planning, organizing and source utilizing in order to successfully finish specific goals of the project. The main role of project management is to meet all the requirements of the project while respecting all the limitations. Some typical limitations are as follows: project goals, time and the budget. The secondary and more ambitious goal of the project management is reasonable use of sources necessary to reach the project goals [2]. The previous definition of the project includes also logistics and all the logistics activities associated with the project run. 2. ANALYSIS OF THE PROJECT OF BUILDING A CONCRETING PLANT Definition of logistic activities for the project of building concreting plant is based on project structure and short description of its individual issues. 2.1 Basic information about the project Fig. 1 Concreting plant CTR 8 The aim of the project was to build the concreting plant according to the customer requirements. Project start was stated on October 17, End of the project was planned until March 1, The concreting plant (Fig. 1) consists of the following elements:

2 1. Cement silos used for storage of different types of cement. 2. Screw conveyers used for transportation of cement to cement scales. 3. Stoneware containers used for storage of various fractions of gravel and sand. 4. Belt conveyer - used to transport a gravel to the skip conveyor. 5. Skip conveyor used to transport the gravel into the mixer. 6. Scales: a) a scale for cement used for loading the cement into the mixer, b) a scale for fluids used for loading the water into the mixer, c) a scale on the belt conveyor used for loading of stone, d) a scale in cement silos used to detect the quantity of material in cement silos. 7. Mixing core unit for mixing concrete meld for production of the concrete [1,3]. 2.2 Structure of the project The project can be divided into 3 stages (figure 2): The first period (pre-production) consists of the following steps: - addressing the supplier company by the customer, 1. stage planning (pre-production), 2. stage production and construction, 3. stage trial operation and support. - a communication between customer and the company. (The customer will provide its concept and requirements. Builder will inform about types and options of concreting plants), - processing the proposal for building the plant, - choosing the final version of the concreting plant, - manual sign of Contract for work. During the first period were performed technological-technical assessment, economical, capacitive and material assessment as well as timetable for the project [4]. The second period is a period when concreting plant is built and consists of: - construction activities associated with the project of concreting plant building (building plan, building permission, making the foundations for concreting plant - Fig. 3), - covering all necessary sources (human, material, machinery and equipment), - production of the components of the concreting plant- Fig. 4, - moving that components to place where concrete plant will be built, - building the concreting plant Fig. 5. During the second period there were specified in detail all the requirements or restrictions for building. There were also created a plan of inspection days including the dates (6 inspection days one for every 3 weeks). The third period was the functional tests of the concreting plant, its trial operation and finally dedication to customer. This period also includes supplier s support for the concreting plant during its lifetime. For the project was identified and evaluated risks by the method of Risk Project Analysis (RIPRAN) [2]. The following risks were identified: Weather. Failure of delivery (resp. loss of the supplier) Poor communication. Change in prices for input raw materials. Risk of accidents (traffic risk).

3 Fig. 2 Diagram of project phases , Jeseník, Czech Republic, EU

4 Fig. 3 Foundations of a Concreting plant Fig. 4 Production of containers Fig. 5 Mounting at the mounting site The analysis revealed that the greatest risk was the weather, especially during the construction of building. Mounting is possible only under conditions when the air temperature does not fall below +2 C. This risk has been proven since the construction was planned for the period from January to February. Cold weather caused stopping of mounting activities so that there was some delay. There is no possibility to develop efficient measures against the weather because of a natural phenomenon. Another measure that could reduce the impact for the company is to include that risk to the contract or to build the concreting plant out of the winter period if possible. 3. DEFINITION OF LOGISTIC ACTIVITIES OF THE PROJECT As part of planning and execution of building the concreting plant we have defined the following logistics operations [5]: project planning, choosing the suppliers, purchase of components, production of mounting parts for concreting plant, transport of all components to the concreting plant s mounting site, building of the concreting plant, customer service.

5 PROJECT PLANNING Consists of establishing the goals and determining all the resources necessary for realization. Project Plan describes all the important objects and features related to the project. Planning was carried out by the company s experience from previous projects. Preliminary timetable was created. It determines the activities, its properties (duration, start of operation, closure), the links between activities was identified, elaborateness was determined as well as necessary human and material resources, responsibility and competency was assigned to individual workers for each individual activity. Timetable for production and purchase of project components is illustrated on a Gantt chart (Figure 6A). CHOOSING THE SUPPLIERS The company cooperates with suppliers, to which has long experience and aims to develop relationships with them. The main criteria, that the company preferred when selecting new suppliers were particularly price, quality and experience. PURCHASE OF COMPONENTS The purchase is an important part of the project, since it influence smooth running of the project. While purchasing, there was a communication with suppliers. Not only basic material was purchased but also some special parts like mixing core, compressor or conveyers [6]. PRODUCTION OF MOUNTING PARTS FOR CONCRETING PLANT After purchase and delivery of necessary mounting components the production of individual parts of the Concreting Plant was realized. It includes production of cement silos (production of ladders, support legs), production of stoneware storage, production of skip monorails, production of tower and scales as shown on Figure 6-A. TRANSPORT OF ALL COMPONENTS TO THE CONCRETING PLANT S MOUNTING SITE Transport was done by two types of vehicles: truck (24ton of payload) and delivery van (2,5 ton of payload). Smaller parts of the concreting plant such as concrete supports under the cement silos (4pcs) skip monorail, belt conveyer (2 pcs) were transferred using the delivery van. The truck was used for the transportation of silos (1 silo for 1 truck), concrete-mixers, supports under the container. Loading and unloading was carried out by a crane. There were also moved technical equipment to the mounting site such as (welding equipment, bending machine for a metal plate, a crane, and many other auxiliary equipment) necessary for carrying out the mounting or construction [7,8]. BUILDING OF THE CONCRETING PLANT Mounting was carried out gradually after the production and transfer of all the parts of the concreting plant to the mounting site of new concreting plant [2]. CUSTOMER SERVICE The company provides professional and preventive services during the life of the concreting plant. 4. CONCLUSION Based on the different stages of production and mounting the concreting plant we have tried to define the logistics activities as a part of the whole project. The activities could be defined for each phase of the project in more detail. From the analysis of defined logistics activities we can conclude that the delivery company does not have any database of the suppliers and does not own any model of ranking whereby it is possible to identify the strengths and weaknesses of suppliers. Database of suppliers would give to the company clarity and comprehensiveness of information about suppliers. The database would be continuously updated by new, potential suppliers that should be compared on the basis of certain criteria with current suppliers. In case of any problem with current suppliers the company could quickly and effectively reach out to other suppliers.

6 Fig. 6-A Gantt s diagram from MS Project (a) Another minor drawback is that the company does not use all the tools provided by the application of MS Project to better monitoring and evaluating the running of future projects [9]. Looking at the diagram of the project stages we can differ various logistic sciences such as customer logistics, purchase and supply logistics, production logistics, service processes logistics, commercial logistics and transportation logistics as well as information logistics. ACKNOWLEDGEMENTS This paper was created within the VEGA grant project No. 1/0036/12 Methods development and new approaches to design of input, interoperable and output warehouses and their location in mining, metallurgy and building industries. REFERENCES [1] ČARNOKA, V: Návrh realizácie projektu racionalizáciou logistických činností. Diplomová práca. FBERG. Košice [2] PROJEKTOVÝ MANAŽMENT [online], [cit ]. Dostupné z internetu : < [3] INTERNÉ MATERIÁLY FIRMY. [4] MALINDŽÁK, D., STRAKA, M., HELO, P., TAKALA, J.: The methodology for the logistics system simulation model Design. Metalurgija. Vol. 49, no. 4 (2010), p ISSN [5] ROSOVÁ, A., PRIBULOVÁ, A., BARICOVÁ, D., FEDORKO, G.: Dekompozícia logistického systému podniku systémovou analýzou. Logistický monitor. Jún 2012 (2012), s ISSN [6] ROSOVÁ, A.: Logistické náklady podniku = Logistics costs of the enterprise. Acta Montanistica Slovaca. Roč. 12, č. 2 (2007), s ISSN [7] LAMPA, M., SAMOLEJOVA, A., ROZNOVSKY, L.: Optimizing of pallet metallurgical products layout on truck loading space In: METAL 2011: 20th anniversary international conference conference on metallurgy and materials : Brno, Czech Republic P ISBN: [8] MARASOVÁ, D., TARABA, V., Grendel, P. Legislatíva a jej požiadavky na bezpečnosť. Acta Montanistica Slovaca. Roč. 15, mimoriadne č. 1 (2010), s ISSN [9] KAČMÁRY, P. - MALINDŽÁK, D.: Prognózovanie obchodu a výroby v dynamicky sa meniacich podmienkach rhu. Acta Montanistica Slovaca. Roč. 15, mimoriadne č. 1 (2010), s ISSN