Ship Repair and Maintenance Management: Application of PERT Analysis on a Tanker Vessel

2019 ◽  
Author(s):  
Eda Turan ◽  
Rıdvan Asar
Keyword(s):  
Total Duration ◽  
Maintenance Management ◽  
Financial Resources ◽  
Maintenance Period ◽  
Duration Time ◽  
Management Application ◽  
Major Loss ◽  
Maintenance Activities ◽  
Resources Planning ◽  
Ship Repair

The costs in shipbuilding and ship repair and maintenance activities are massive and need several materials in the same production phase. Construction without planning is not rational, and any mistake in the planning phase will cause major loss of time, quality, and financial resources. Planning in ship repair and maintenance yards is more complicated than new building shipyards because the duration time is limited. In this study, 200-m-long tanker’s repair and maintenance period has been planned by program evaluation and review technique analysis in light of the data acquired from X shipyard in Turkey to reflect critical activities that affect the total duration time.

scholarly journals Zone-Oriented Drawings for Life-Cycle Management

1989 ◽  
Vol 5 (02) ◽  
pp. 126-134
Author(s):  
James R. Wilkins
Keyword(s):  
Life Cycle ◽  
Life Cycle Management ◽  
Maintenance Management ◽  
Management Process ◽  
Modular Construction ◽  
Construction Techniques ◽  
Operational Life ◽  
Maintenance Activities

ABSTRACT This paper presents the results of a study conducted to determine whether unit-oriented construction drawings, which are being developed and used by shipbuilders using modern zone-oriented, or modular, construction techniques, will satisfactorily substitute for system-oriented detailed arrangement drawings in the Navy's life-cycle maintenance management process. The study concluded that modular construction drawings will provide the necessary data in a more usable format, and thus are the preferred approach for the Navy's use. However, the study also identified several additionally needed features that are not now being provided in unit-oriented drawings, but which must be included in order to meet the needs of planning and maintenance activities during the operational life of a ship. A number of other observations about drawing use and maintenance are provided.

scholarly journals Compliance between ANSI/ACCA/ASHRAE 180 and ANSI/ISA-95 for Maintenance Management

2017 ◽  
Vol 15 (2) ◽  
pp. 31-36
Author(s):  
P. Vasilev ◽  
V. Filipov
Keyword(s):  
Service Providers ◽  
Facility Management ◽  
Commercial Buildings ◽  
Maintenance Management ◽  
Maintenance Activities ◽  
Maintenance And Inspection ◽  
Work Done ◽  
Distributed Tasks ◽  
Organizational Objectives

Abstract Facility Management is an important part in the commercial buildings and installations lifecycle, which includes permanent checks and monitoring of all systems and installations, helping to achieve the organizational objectives. The execution of activities of Maintenance and Inspection is often redistributed to contracted service providers which raises the issue of managing and supervising the results of work done. The major factor for proper execution of distributed tasks is the formalization of the activities in manner of who-what-when-why-how has to be done to accomplish the work. These rules have to be used as guidelines during the tasks execution and for the purpose of managing and supervising the overall progress of maintenance activities.

scholarly journals Using Computerized Maintenance Management System (CMMS) in Healthcare Equipment Maintenance Operations

2020 ◽  
Vol 8 (4) ◽  
pp. 1345-1350
Keyword(s):  
High Performance ◽  
Medical System ◽  
Maintenance Management ◽  
Healthcare Sector ◽  
Equipment Management ◽  
Equipment Maintenance ◽  
Maintenance Period ◽  
Computerized Maintenance Management System ◽  
Inspection And Maintenance

Healthcare and medical equipment sustainability is very important, we need to have an efficient and high performance devices. If such systems or devices are fail every time this will effect patients and the medical system at all. Healthcare equipments like ventilators and other devices nowadays has a good priority and important because of Covid19 which effects all countries now. Since these devices exposed some defects which will effect on its role it is very important to study and analyze such defects, classify them and how to apply CMMS in such maintenance operations. This paper aims to use CMMS in maintenance operations of equipments in healthcare sector. Also a classification of failures of such equipments is generated to be an input for CMMS programs. The second thing is to use Equipment maintenance (EM) number in classifying such devices to be ready for using CMMS. A sample of medical devices are studied and the equipment management number (EM) is calculated here for some selected devices if it reaches some specific value it needs maintenance and CMMS will manage the maintenance operations required. CMMS procedures, transactions and benefits are discussed in this paper. It is found that in the first step we should determine the devices included in inspection and maintenance operations by using EM number, then specifying the maintenance period and inspection frequency after that following some specific steps to manage the maintenance operations followed by CMMS programs. Equipment maintenance (EM) number is very important to determine whether the equipment need maintenance or not, and it also determine the inspection and maintenance duration and so such devices be ready to be used all the time. CMMS can be efficiently used in maintenance operations of healthcare equipments. The use of CMMS software or application is used in processing entered data of devices or systems following the commands step-by-step to construct a CMMS system for each plant or system, this will simplify the monitoring and inspections and maintenance operations which increasing availability of the device and decreasing downtime

scholarly journals The Maintenance Management of Broiler Chicken in Achieving Ideal Body Weight (Case Study in RRMC "Rurel Rearing Multivication Center " Puubunga, Indonesia)

2017 ◽  
Vol 2 (2) ◽  
pp. 7-12
Author(s):  
Rin Orin Ningrum
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Ideal Body Weight ◽  
Maintenance Management ◽  
Maintenance Period ◽  
Productivity Level ◽  
Chicken Farm ◽  
Ideal Body ◽  
The Ideal

The broiler chicken farm at RRMC has good maintenance management and feeding procedures. The productivity level of the livestock had been achieved and it meets the standard market weight of 2 kg for one maintenance period of 35 days. The shape of the coop in the RRMC is a semi-monitor whose coop location faces the rising sun, so the chicken can get direct morning sunlight. Preparation of the coop at the time of DOC comes is very important because the coop should be sterile from various seeds of disease. Whether it comes from fungi, viruses, bacteria and protozoa. In addition, during maintenance, employees must be diligent in controlling the existing chicken in the coop and see the condition of feed and drink that must be given ad libitum in order to produce the ideal body weight according to the wishes of the entrepreneur and its customers. The results of the research, it can be concluded that maintenance management in RRMC very clear and in accordance with existing procedures, whether it is feeding, handling of diseases affected by disease, vaccine and drugs.

Spectral energy density for quarry explosions

1963 ◽  
Vol 53 (5) ◽  
pp. 989-996 ◽  
Author(s):  
G. E. Frantti
Keyword(s):  
Energy Density ◽  
Seismic Waves ◽  
Energy Levels ◽  
Total Duration ◽  
Seismic Energy ◽  
Body Waves ◽  
Propagation Path ◽  
Spectral Energy ◽  
Time Duration ◽  
Duration Time

Abstract Several explosions of varying time duration have been recorded at 156 km along a constant propagation path from a central Michigan limestone quarry. Energy density for body waves and surface waves is examined as a function of frequency and observed to peak between 1 and 10 cps. A correlation between spectral amplitudes and source duration time is revealed and is emphasized at shot durations which approximate the dominant period of seismic waves. A study of the data suggests that seismic energy levels may be controlled, in part, by regulating the time duration of delayed quarry blasts. This parameter (total duration time) has been generally neglected in published studies involving commercial blasts.

ANALISIS PEMELIHARAAN MESIN RIDGER PALIR DI PT GREAT GIANT PINEAPPLE

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Burhan Nudin ◽  
Keyword(s):  
Preventive Maintenance ◽  
Spare Parts ◽  
High Price ◽  
Maintenance Period ◽  
Preventative Maintenance ◽  
Corrective Maintenance ◽  
Maintenance System ◽  
Maintenance Activities ◽  
Engine Maintenance ◽  
The Cost

Abstract The purpose of this study is to determine the optimization of machine maintenance which is applied by the company (companies), the problems that arise in the maintenance system, and the cost of both preventive maintenance and subsequent corrective maintenance activities, to determine the alternatives that is most optimal. The case study will be conducted in the PT Great Giant Pineapple by focusing the research on Ridger Palir machine. The selection will done in this machine, that is to say, considering terms of maintenance, and the high price of the spare parts. Based on the research results that have been done on PT Great Giant Pineapple, the engine maintenance activities, the general implementation of the engine maintenance, shows the company has been running pretty well, but not yet optimal. Out of the problems found in these, the author tried to find a solution by taking into account the cost efficient in carrying out maintenance and engine solutions to the problem of spare part procurement. Preventive maintenance system may be optimal for the efficiency of the company if the determination of the machine preventative maintenance period is predominant. Machine preventative maintenance period can be optimized with the average, that is, the average treatment which cab conducted once every 6 months. Keywords: maintenance, preventive maintenance, corrective maintenance

Time Scale of Scouring Around Submarine Pipelines Induced by Wave and Current

2006 ◽  
Author(s):  
Abbas Yeganeh Bakhtiary ◽  
Mir Emad Mousavi ◽  
Amin Tohidi Vahdat
Keyword(s):  
Time Scale ◽  
Total Duration ◽  
Experimental Results ◽  
Scour Depth ◽  
Duration Time ◽  
Physical Experiments ◽  
New Equation

Physical experiments have been conducted to explore the time scale of the wave- and current- induced local scouring around submarine pipelines as well as the development of the scour profile versus the elapsing time. The experimental results have been used to examine the recommended equations of Fredsoe et al. (1992) and/or to derive new equations for prediction of scour depth/width during the process with respect to the equilibrium scour properties. In addition, the total duration (time scale) of scouring is studied and a new equation is proposed for the case of current motion. The results of this equation are then simplified in the form of diagrams for estimation of the scouring duration in practice.

Software Estimation Framework for Digital Enhancements and Maintenance Projects

2020 ◽  
Vol 8 (2) ◽  
pp. 81-96
Author(s):  
Shailesh Kumar Shivakumar
Keyword(s):  
Continuous Improvement ◽  
State Of The Art ◽  
Maintenance Phase ◽  
Incident Management ◽  
Quality Improvements ◽  
Software Application ◽  
Software Estimation ◽  
Management Application ◽  
Maintenance Activities ◽  
Software Lifecycle

Software enhancements and the maintenance phase is generally the crucial phase of a software application lifecycle. The enhancements and maintenance consume about 20% of the overall software lifecycle effort. Enhancement and maintenance phase of modern digital projects involves many activities such as incident management, application enhancements, generic maintenance, quality improvements such as automation, preventive maintenance, continuous improvement, and such. State-of the-art estimation models and frameworks fall short of factoring all the dynamics involved in the enhancements and maintenance phase. The article proposes a digital project maintenance estimation framework to estimate various activities of a digital maintenance project. The proposed estimation framework provides comprehensive coverage of maintenance activities including incident management, application enhancements, generic maintenance, and quality improvements. The proposed estimation framework was used to predict effort estimate of 5 digital maintenance projects with MMRE of 0.255 and predicted (0.3) of 80%.

Sign in / Sign up

Export Citation Format

Share Document