scholarly journals Usulan Perawatan Sistem Boiler dengan Metode Reliability Centered Maintenance (RCM)

2017 ◽  
Vol 18 (1) ◽  
pp. 86
Author(s):  
Hamim Rachman ◽  
Annisa Kesy Garside ◽  
Heri Mujayin Kholik
Keyword(s):  
Calculation Result ◽  
Check Valve ◽  
Machine Maintenance ◽  
Maintenance System ◽  
Reliability Centered Maintenance ◽  
Gland Seal ◽  
System Maintenance ◽  
Category Condition ◽  
Engine Components ◽  
Component Replacement

Pembangkit Listrik Tenaga Uap (PLTU) PT Indo Pusaka Berau is a PLN work unit that provides electricity to consumers. The problem of the company is the frequent damage to boiler engine components. The company uses corrective maintenance system. On the problem, it is necessary to develop a machine maintenance system with Reliability Centered Maintenance (RCM) approach. The objective of the study was to select a boiler system maintenance action based on the RCM method and component replacement interval to minimize Total Minimum Downtime (TMD). Results of data processing RCM method, component in category Condition Directed (CD) is El Bow component. Components in Time Directed category (TD) are gland seal steam and check valve. Components in the Time Directed category are calculated for component replacement intervals on TMD criteria. The calculation result from component replacement interval was obtained 37 days for gland seal steam component and 58 days for check valve component. The proposed treatment of RCM method can reduce downtime by 11.33% of the company's maintenance methods.

scholarly journals Usulan Perawatan Mesin Stitching Dengan Metode Reliability Centered Maintenance

2017 ◽  
Vol 16 (2) ◽  
pp. 83
Author(s):  
Rizki Arga Kurniawan ◽  
Heri Mujayin Kholik
Keyword(s):  
Block Diagram ◽  
Production Quality ◽  
Main Concern ◽  
Logic Tree ◽  
Effect Analysis ◽  
Machine Maintenance ◽  
Reliability Centered Maintenance ◽  
System Maintenance ◽  
Critical Components ◽  
And Function

Based on industrial competition nowadays,  production quality occurs to be the main concern of severals top companies. Method of machine maintenance is a way to incresing their production quality. Nowadays, several companies still using a corrective maintenance to maintain their machine, which is all of machine maintenance only be performed if the machine damaged. This thesis only  focus to high frequency stitching machine. This thesis using Reability centered maintenance method  to obtain optimum maintenance interval. This method gathers 7 step of data processing, starting from data selection, determinating restricions of the system, descripting the system and function of block diagram, and then FMEA (Failure Mode Effect Analysis) and LTA (Logic Tree Analysis). The result of this method is a correct maintenance action for critical components that included in condition directed and time directed categories. Qulitative analysis for Reliability Centered Maintenance  method includes types indectification of maintenance, cause of damage and the occuring failure. Resul of the research contain several maintenance actions for critical components using condition directed method and critical component replace schedule using time directed method. From the suggested system maintenance simulation with RCM method, downtime can be decrease until 47,83%.

scholarly journals Maintenance Preventive Scheduling of Critical Components in Offset Printing Machine (Case Study : PT. XYZ)

Tibuana ◽  
2021 ◽  
Vol 4 (02) ◽  
pp. 110-119
Author(s):  
Marcy L. Patiapon
Keyword(s):  
Production Process ◽  
Critical Component ◽  
Offset Printing ◽  
Maintenance Schedule ◽  
Machine Maintenance ◽  
Reliability Centered Maintenance ◽  
Critical Components ◽  
Printing Machine ◽  
Component Replacement

Maintenance activities are generally considered as supporting activities in the production process. However, this activity is very important because it contributes directly to the smooth running of the production process and productivity. PT. XYZ is a company engaged in mass media or newspapers since September 8, 2015. In the newspaper production process, PT. XYZ experienced delays in the production process due to damage to the component parts of the printing machine, in which the Offset printing machine is the core printing machine that is always used to print newspapers. Based on data on the frequency of damage during 2020 which was obtained from observations and interviews with operators, damage to machine components for 1 year on the offset printing machine counted 73 times that it was damaged. Thus making the machine stop operating from the effective working time of the machine, which is 264 days/year. This is due to the unavailability of a machine maintenance schedule because the company is still implementing a breakdown maintenance system. Thus the researcher aims to calculate the value of the identified critical components and calculate the effective time of machine operation for scheduling replacement of critical components of offset printing machines using the Reliability Centered Maintenance method. Based on the results of data processing using the Reliability Centered Maintenance method, the contactor component is determined as a critical component where the value of the Risk Priority Number is 72 with an average checking time of 11,250 minutes and component replacement time of 7 times/year. For this reason, it can be concluded that the contactor is a critical component with a damage value of 72 and the scheduling time for component replacement is 7 times in 1 year.

Integration of Complex Maintenance System in Operation

2014 ◽  
Vol 613 ◽  
pp. 446-451 ◽  
Author(s):  
Adam Žilinský
Keyword(s):  
Complex System ◽  
Production Systems ◽  
Integrated System ◽  
Economic Aspects ◽  
Total Cost ◽  
Maintenance System ◽  
Integration Techniques ◽  
System Maintenance

From the perspective of practice, maintenance is carried out to ensure the desired reliability of production systems so that the total cost of the operation of such systems are the lowest. The article describes the need for integration of complex system maintenance and its benefits. The first section describes the approaches, starting points and methods of integration. Further, the article discusses integration techniques. Finally, there are described the economic aspects and the evaluation of the integrated system maintenance.

Research of Flight Control System Maintenance Model Based on ARINC624 Specification

2013 ◽  
Vol 760-762 ◽  
pp. 1106-1111
Author(s):  
De Xin Zhou ◽  
Wei Zhang ◽  
Lei Yang
Keyword(s):  
Control System ◽  
Flight Control ◽  
Fault Tree ◽  
Flight Control System ◽  
Tree Model ◽  
Maintenance System ◽  
Structure Tree ◽  
System Maintenance ◽  
Searching Method ◽  
Maintenance Model

According to a detailed study of the fault tree model of the flight control system about Boeing 777, a pre-program was established for the fault tree. The minimal cut sets of the treetops event was calculated by Fussell-Vesely algorithm. And the directed graph search process based on DFS and fault tree module searching method based on double DFLM was used to achieve modular decomposition of fault tree. Therefore, a better structure tree and better rules generate. Finally, it combines the fault tree fault model with the ARINC624 specification to achieve communication requirements between the central maintenance system and flight control system. The Boeing 777 maintenance model was realized.

scholarly journals Exploration and Research on Fault Maintenance System of New Generation Weather Radar

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Haitao Yan
Keyword(s):  
Weather Radar ◽  
The Other ◽  
Repair System ◽  
Technical Equipment ◽  
Repair Work ◽  
Grass Roots ◽  
Maintenance System ◽  
System Maintenance ◽  
New Generation ◽  
Level 2

In order to improve the standardization, specialization, intelligence and timeliness of the new generation weather radar fault repair, the technical threshold of radar fault repair is greatly reduced, so that the general operators can carry out radar fault repair work. In order to achieve this goal, this paper designs a new generation weather radar fault repair system, which aims to solve two problems: one is to solve the causes and locations of the new generation weather radar faults which can be quickly and accurately detected and diagnosed[1]; the other is to solve the problem that the grass-roots radar operational staff are inexperienced in maintenance and will not be repaired, and to provide visual through the maintenance system. Maintenance methods and steps with expert intelligence level [2], so that general radar operators can operate radar fault repair according to video steps, and have the technical level of maintenance experts, to achieve breakthroughs in technical difficulties of radar fault repair, to achieve both disease detection and treatment effect, to improve the efficiency of the use of new generation weather radar and to achieve modern technical equipment support. Chemistry plays an important role and significance.

scholarly journals SELECTION OF KRI HARDEPO PRIORITIES USING THE FUZZY MCDM METHODS

JOURNAL ASRO ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 152
Author(s):  
Bambang Suharjo ◽  
I Made Jiwa Astika ◽  
Agus Setiadji ◽  
Joko Purnomo
Keyword(s):  
Development Program ◽  
Strength Development ◽  
Maintenance System ◽  
Maintenance Program ◽  
Proposed Model ◽  
Decision Environment ◽  
System Maintenance ◽  
Fuzzy Mcdm ◽  
The Republic ◽  
Selection Of

The Unitary State of the Republic of Indonesia (NKRI) is the largest archipelagic country in the world, two thirds of which are is seas, requiring the presence of the KRI in maintaining its sovereignty. Continuity of attendance in carrying out its main duties, the Navy depends on the readiness of the KRI (Indonesian Republic Warship). The Navy's strength development program is bound to the MEF (Minimum Essencial Force), the basic development policy of TNI AL towards minimum principal strength. The main target of MEF is a limited amount but can operate optimally. So we need a program to overcome these problems by maximizing the defense system maintenance program called SPT (Planned Maintenance System). To maximize the planned maintenance system that supports the MEF program requires prioritization in selecting the KRI that will carry out Depo level improvement (Hardepo). The selection of KRI determination that will implement Hardepo has several factors that need to be considered so that it is categorized in a multi-criteria decision environment, then the proposed model becomes an appropriate methodology to accommodate the criteria with the Fuzzy MCDM (Multi Criteria Decision Maker) approach. In this study there are six alternative KRI namely KRI Keris-624, KRI Rimau Island-726, KRI Kerapu-812, KRI Badau-841, KRI Jakarta Bay-541 and KRI Arun-903 where the first priorities obtained are KRI Rimau Island- 726 with a weight value of 0.1778. After the priority is obtained then schedule the duration and availability of Docking at PT PAL Indonesia where all KRI can carry out docking every TW (Tri Wulan) except KRI Arun-903 which cannot carry out docking on TW I 2019. Keyword : MEF, SPT, Hardepo, Fuzzy MCDM, Docking Scheduling.

scholarly journals Model of stochastic process of restoration of working capacity of agricultural machine in inertial systems with delay

2020 ◽  
Vol 11 (3) ◽  
pp. 143-150
Author(s):  
I. L. Rogovskii ◽  
Keyword(s):  
Research Problem ◽  
Theoretical Research ◽  
Working Capacity ◽  
Maintenance System ◽  
Healthy State ◽  
Maintenance Service ◽  
System Maintenance ◽  
Basic Functions ◽  
Two Phases ◽  
Complex Indicators

In the article the analysis of existing agricultural machines in a healthy state, followed by work on the maintenance system subject to the conditions of reforming of the agrarian sector. Under maintenance refers to the complex of works on maintenance of working capacity or serviceability of the products during use by adjusting, knowledgeable, filling and retaining work. For the assessment of the alternatives it is advisable to conduct morphological analysis of the entire set of possible solutions to the research problem presented in a morphological matrix, which presents the basic functions of the machine and options the subject of the forms of their implementation. Theoretical research has provided the answer to two fundamental questions – how to change maintenance system depending on the level of development of agricultural production, and what parameters must have the system maintenance service to perform the appropriate intervention with the minimum technologically necessary costs of resources and investment. Assessment of the level of maintenance of agricultural machinery is provided to carry on the totality of organizational and technical factors, formalized through parts and complex indicators, in two phases. The first evaluation of using of the indicators for each factor separately. Second – assessment of a complex indicator (for all factors).

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