scholarly journals The analysis of the maintenance systems of a LPG carrier’s liquefaction system main components

Pomorstvo ◽  
2017 ◽  
Vol 31 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Aleksandar Vorkapić ◽  
Predrag Kralj ◽  
Dragan Martinović
Keyword(s):  
Market Demand ◽  
Liquefied Petroleum Gas ◽  
Maintenance System ◽  
Reliability Centered Maintenance ◽  
Introductory Part ◽  
Modern System ◽  
Maintenance Systems ◽  
Maintenance Techniques ◽  
Main Components ◽  
Modern Condition

The introductory part of this paper offers an overview of approaches on general marine maintenance and clarifies the significance of modern maintenance techniques, as well as their application in shipping practice. Unplanned down times and accidents, which result from inappropriate maintenance, create additional expenses. In today’s shipping practice the widely shared concept of planned maintenance is not the most effective of the approaches. The appropriate maintenance system needs to prevent or reduce down times. Modern condition-based and reliability-centered maintenance systems recognize the market demand for a better ratio of the invested funds and complex tasks that the maintenance systems need to fulfill. The paper further analyses the possibilities of adjusting the maintenance intervals, which are shown on the example of a modern system for cargo liquefaction on a liquefied petroleum gas tanker.

scholarly journals ANALISIS RELIABILITY CENTERED MAINTENANCE (RCM) PADA ALAT BONGKAR MUAT RUBBER TYRE GANTRY CRANE (RTGC) DI PT XXX

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Rahmatulloh Rahmatulloh ◽  
Keyword(s):  
Gantry Crane ◽  
Maintenance System ◽  
Reliability Centered Maintenance ◽  
Optimal Maintenance ◽  
Cause Of Failure ◽  
Selection Decision ◽  
Maintenance Systems ◽  
Loading And Unloading ◽  
Operational Activities ◽  
A Company

The loading and Unloading operational activities in port often run into obstacle, because happened malfunction occurrence of the equipment used. Failure to operate the equipment has resulted in downtime decreased of company productivity. Therefore, a system is needed maintenance of planning in order to produce the equipment that can be operated optimally. This research was choosen the company PT. XXX which is a company that enganged in the field maintenance of equipments port operational (quayside container crane, rubber tyre gantry crane, gantry luffing crane, and others) the place where the equipment maintenance system, especially the rubber tyre gantry crane (RTGC) which has been done are still a breakdown maintenance and corrective maintenance. The aim of this research is to analyze by method of reliability centered maintenance (RCM) to able to determined the optimal maintenance and it can be predict steps to overcome the damage that might will happen in the next period based on existing data. From data processing and analysis was obtained that the components most frequently damaged on the equipment of RTGC, cause of failure, selection decision and recommendations for maintenance systems are based on Reliability Centered Maintenance (RCM).

scholarly journals Convergence Issues of Hydrodynamic Models of Reservoir Pressure Maintenance Systems

2021 ◽  
Vol 135 (4) ◽  
pp. 32-35
Author(s):  
S. T. Zakenov ◽  
◽  
А. А. Yermekov ◽  
L. K. Nurshakhanova ◽  
Sh. Aijanova ◽  
...  
Keyword(s):  
Initial Data ◽  
Software Package ◽  
Reservoir Pressure ◽  
Hydraulic Characteristics ◽  
Hydrodynamic Models ◽  
Pipeline Network ◽  
Maintenance System ◽  
Maintenance Systems ◽  
Calculation Software

The article presents the problems of correctness of input of initial data, convergence of hydrodynamic models based on the results of calculating the hydraulic characteristics of the ground pipeline network of the reservoir pressure maintenance system using an automated calculation software package.

scholarly journals Identifikasi Pemeliharaan Vertical Garden di Fairmont Sanur Beach Bali

2021 ◽  
pp. 153
Author(s):  
Ni Luh Putu Ari Radinasuari ◽  
Cokorda Gede Alit Semarajaya ◽  
I Made Sukewijaya
Keyword(s):  
Study Data ◽  
Literature Study ◽  
Maintenance System ◽  
Epipremnum Aureum ◽  
Portulaca Grandiflora ◽  
Schefflera Arboricola ◽  
The Media ◽  
Maintenance Systems ◽  
Water Disposal ◽  
Maintenance Process

Maintenance Identification on Vertical Garden at Fairmont Sanur Beach Bali. Fairmont Sanur Beach Bali has a vertical garden with an area of 10 m x 4 m. The Hotel is able to maintain the plant condition. The purpose of this research is to identify the vertical garden maintenance system at the Fairmont Sanur Beach Bali. The research method uses survey and literature study methods. Data collection techniques are observation, interview, and literature study. Data analysis methods with descriptive methods and scoring tables. The results about the identification of vertical garden maintenance systems consist of watering, water disposal system, trimming, fertilizing, replanting plants, media replacement, sanitation, pest and disease control. Watering in 2 hours creating high humidity in the media. The volume of water released is not fully experienced evapotranspiration. The planting media do not experience drought during the day, so the plants keep fresh. In the calculation of plant suitability values, the corresponding values are Hemigraphis alternata. Plants with adequate value are Epipremnum aureum, Asparagus densiflorus, Ananas bracteatus tricolor, Schefflera Arboricola, and Portulaca grandiflora. In the maintenance process requires a fertigation system to facilitate fertilization. The use of automated systems such as timmers will simplify the maintenance and a more scheduled.

Evaluasi Ukuran Tubuh Turunan Sapi Aceh dengan Sistem Pemeliharaan Berbeda di Kecamatan Indrapuri, Aceh Besar

2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Furkan Herry ◽  
Mohammad Agus Nashri A. ◽  
Asril Asril
Keyword(s):  
Body Size ◽  
Body Length ◽  
The Body ◽  
Chest Circumference ◽  
Maintenance System ◽  
Weaning Age ◽  
Maintenance Systems ◽  
Observation Method ◽  
The Village

Penelitian ini dilaksanakan di 3 desa yang berbeda di Kecamatan Indrapuri, Kabupaten Aceh Besar. Penelitian berlangsung selama 30 hari yang dimulai dari tanggal 18 Februari - 19 Maret 2017. Penelitian ini bertujuan untuk mengevaluasi ukuran tubuh turunan sapi aceh pada umur sapih dengan sisitem pemeliharaan yang berbeda. Materi  yang digunakan dalam penelitian ini adalah anak sapi Aceh lepas sapih sebanyak 24 ekor. Metode penelitian ini menggunakan metode observasi yaitu dengan cara mengukur ternak turunan sapi Aceh lepas sapih tersebut. Penentuan desa dengan mempertimbangkan adanya sistem pemeliharaan sapi secara ekstensif dan intensif dan jumlah ternak sapi lepas sapih terpenuhi untuk pengambilan sampel. Parameter yang diamati dalam penelitian ini adalah lingkar dada, panjang badan, dan tinggi pundak. Hasil penelitian menunjukkan ukuran lingkar dada turunan sapi Aceh pada umur sapih yang di pelihara dengan system intensif menunjukkan ukuran yang lebih tinggi di bandingkan dengan ukuran lingkar dada yang dipelihara dengan system pemeliharaan ekstensif dan pada pengukuran panjang badan dan tinggi gumba turunan sapi Aceh yang di pelihara dengan system ekstensif menunjukkan ukuran yang lebih tinggi dibandingkan dengan ukuran  panjang badan dan tinggi gumba yang di pelihara dengan sistem intensifEvaluation of Body Size of Aceh Cow Beans with Different Maintenance System in Indrapuri Sub-district, Aceh BesarThis research was conducted in 3 different villages in Indrapuri Sub-district, Aceh Besar District. The study lasted for 30 days starting from February 18 to March 19, 2017. This study aims to evaluate the body size of aceh cows at the weaning age with different maintenance systems. The material used in this study is Aceh calf off weeds as much as 24 tail. This research method using the observation method that is by measuring the cattle of Aceh cattle derivatives off the weaning. Determination of the village taking into account the existence of an extensive and intensive cattle breeding system and the number of loose weaning cattle is fulfilled for sampling. Parameters observed in this study were chest circumference, body length, and shoulder height. The results showed that the size of the chest circumference of cows of Aceh cattle at the age of weaning with intensive care system showed a higher size in comparison with the size of the chest circumference maintained with extensive maintenance system and on the measurement of the length and height of the gumba derived from Aceh cows Extensive systems show a higher size compared to the size of the body length and height of the gumba maintained in an intensive system

scholarly journals Integration of maintenance systems

2018 ◽  
Vol 211 ◽  
pp. 03010
Author(s):  
S H Sarje
Keyword(s):  
Preventive Maintenance ◽  
Hazard Rate ◽  
Reduction Factor ◽  
Maintenance Cost ◽  
Cost Ratio ◽  
Imperfect Maintenance ◽  
Maintenance Policy ◽  
Maintenance System ◽  
Reliability Centered Maintenance ◽  
High Flexibility

Excellence in maintenance is imperative in highly competitive market because it resulted into minimum maintenance cost, high equipment effectiveness, maximum reliability of the system, high quality of the products, low delivery time, high flexibility, safety etc. Any maintenance system such as Total Productive Maintenance (TPM) or Reliability Centered Maintenance (RCM) or Condition Based Maintenance (CBM) alone cannot achieve the excellence in maintenance but its integration may do. In this paper, an integration of TPM, RCM and CBM is proposed with a maintenance policy to take advantage of their respective strengths. A continuously monitored system subject to degradation due to the imperfect maintenance, where a hybrid hazard rate based on the concept of age reduction factor and hazard rate increase factor to predict the evolution of the system reliability in different maintenance cycles has been assumed.A quantitative decision making model for an integrated maintenance system is derived in order to assess the performance of the proposed maintenance policy. Numerical examples of calculation of optimal preventive maintenance age x and preventive maintenance number N* for the given cost ratio of corrective replacement and predictive preventive maintenance are given.

DEVELOPMENT OF A FRAMEWORK FOR WORLD-CLASS MAINTENANCE SYSTEMS

2006 ◽  
Vol 05 (02) ◽  
pp. 141-165 ◽  
Author(s):  
RAJESH PRASAD MISHRA ◽  
G. ANAND ◽  
RAMBABU KODALI
Keyword(s):  
Best Practices ◽  
Comparative Study ◽  
Maintenance System ◽  
The World ◽  
World Class ◽  
Maintenance Systems ◽  
Class Status ◽  
New Framework

A world-class maintenance system (WMS) refers to the best practices in maintenance that are followed and adopted by various organizations to transform themselves to be a 'world-class manufacturer'. One of the important factors in developing a 'world-class' maintenance system within an organization is the adoption of a sound framework that provides the necessary conceptual and theoretical details of best practices to be followed, to reach the world-class status. Several authors, consultants and large organizations have proposed different frameworks representing the best practices in maintenance, which seem to have been developed and derived primarily from the context and experience of such large organizations and consultants respectively. A comparative study revealed that most of the frameworks are unique and proposes several unique best practices in maintenance. Hence, in this paper, an attempt has been made to identify such best practices from the existing frameworks and integrate these practices to develop and propose a new framework for world-class maintenance systems.

Predictive Maintenance of Cogeneration Engines Through the Analysis of the Circulating Fluids

2002 ◽  
Author(s):  
J. R. Gonza´lez ◽  
J. Velayos ◽  
M. Comamala
Keyword(s):  
Fuzzy Logic ◽  
Expert System ◽  
Diesel Engines ◽  
Predictive Maintenance ◽  
Maintenance System ◽  
Maintenance Systems

In this article we present a fluid-based predictive maintenance system based on an expert system which uses fuzzy logic. The programme uses information from the circulating fluids of the machine to provide an evaluation of the maintenance status of the engine. Specifically, the programme is aimed at diesel engines in a half rate cogeneration, and so we will compare our results with other commercial maintenance systems, such as FAMM (Texaco) and ADOC (Repsol), which provide corresponding responses.

scholarly journals Changes in maintenance of railway vehicles as the sources of threats in the railway system

2020 ◽  
Vol 195 (1) ◽  
pp. 112-120
Author(s):  
Magdalena Helak ◽  
Adam Kadziński
Keyword(s):  
Risk Assessment ◽  
National Security ◽  
Rail Transport ◽  
System Safety ◽  
Railway Vehicles ◽  
Maintenance System ◽  
Railway System ◽  
Maintenance Systems ◽  
Legislative Changes ◽  
Proper Operation

Proper operation of railway vehicles is the basis for the functioning of a safe railway system. At the same time, it is not possible to talk about the safe use of a vehicle without adequately carried out maintenance processes. Due to legislative changes in August 2017, the maintenance system of railway vehicles has changed significantly. In most cases, it is the entities responsible for maintenance that are fully liable for the shape of the maintenance documentation, not the national security authority (in Poland the President of the Rail Transport Office) as has been the case so far. That is a big challenge for everyone involved in maintaining railway vehicles. The article presents the system of maintenance of railway vehicles as critical for the railway system safety, with the division into those registered in the National Railway Register and the unregistered ones. National and EU requirements for maintenance systems as well as the conditions for the implementation of “changes” in these systems have been presented, based, among others, on the results of the risk assessment of the threats they generate.

Self-maintenance techniques: a smart approach towards self-maintenance system

2013 ◽  
Vol 5 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Sarbjeet Singh ◽  
Diego Galar ◽  
David Baglee ◽  
Sten-Erik Björling
Keyword(s):  
Maintenance System ◽  
Maintenance Techniques
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