Shipyard Company Research Articles

Welding Quality Control Using Seven Tools Method AT PT. XYZ

PT. XYZ is the largest shipyard company in Indonesia. In the ship production process, PT. XYZ Indonesia strives to provide the best for consumers, especially in terms of the quality of making the KCR-301 ship, where during the welding process there are still several defects such as Incomplete Penetration, Incomplete Fusion, Slag Inclusion and Porosity. The purpose of this study was to determine the percentage of the most dominant defects in welding and provide recommendations for improving the quality of welding on the KCR-301 ship using the seven tools method. Based on the results of the study, it was found that the most dominant defect in welding quality was Incomplete Penetration of 800 mm (2.93%), then followed by Incomplete Fusion defects of 630 mm (2.31%), Slag Inclusion defects of 595 mm (2.18%), and Porosity defects of 460 mm or (1.69%). The proposed improvements to the most dominant ones with the proposed recommendations for improvement are to emphasize to the welder to be required to better understand the procedures and SOPs that will be used to weld properly.

Określenie zmian ciśnienia podczas wiercenia otworu z półzanurzalnej platformy wiertniczej

The article states that a ship in the open sea is in a complex oscillatory motion due to the aerodynamic force of water flow and hydrodynamic pressure. Among the lateral, keel, horizontal, and vertical vibrations, only the vertical vibration of the vessel primarily affects the technological process of drilling a well. The article determines the magnitude of the hydrodynamic pressure that arises in the wellbore from the oscillation of the semi-submersible drilling platform in the absence of well flushing and a telescopic string, a compensator for vertical movement. When formulating the problem accurately, one should take into account the presence of natural vibrations of both the drilling tool and the semi-submersible drilling platform from which the well is to be drilled. The semi-submersible drilling platform was awarded by Caspian Drilling Company to two subsidiaries of Keppel offshore & Marine Company with Caspian Rigbuilders and Caspian Shipyard Company. This platform, named after Heydar Aliyev, is the first and the only drilling platform in the world with a 1,400-atmosphere system technology. Its carrying capacity is 5,600 tons, and its displacement is 47,500 tons. Vertical vibrations of the semi-submersible platform, caused by hydrometeorological conditions, set in motion the drilling tool associated with the semi-submersible drilling platform, along with the flushing solution that fills the well during drilling without a riser. This leads to a change in the hydrodynamic pressure in the well. Therefore, the change in hydrodynamic pressure in the well must be checked using a special installation that simulates the vibrations of the vessel and drilling tool in a well filled with drilling fluid.

Estimation Of Welding Wire Requirements (Electrode) For Installation Of 300 Feet Barge Sideboard Assembly

Installation of the sideboard assemblies on a 300 feet barge requires an estimate of the need for welding wire, besides that an estimate of the need for oxygen and LPG gas is also required for the work of cutting the old sideboard. This is so that the repair work does not experience errors in estimating the amount of consumables used so as not to result in losses for the shipyard company. The objectives obtained during the research were to determine the need for welding wire in the welding process of the 300 feet barge sideboard. The design of this study uses a quantitative approach and there are several variables used including independent variables such as the thickness of the material, the length of the welding, and cutting areas. Dependent variables such as the number of electrodes, oxygen, and LPG gas used. Control variables such as the SMAW welding process using AWS A5.1 E6013 electrodes and cutting using an oxygen and LPG gas cutting blender. The data collection techniques in this study were literature study, observation, and interviews. Based on the calculation, the total need for welding wire for the installation of the 300 feet sideboard assembly is 95.87 kg total oxygen requirement of 241.51 kg and LPG gas of 177.35 kg for cutting the old sideboard.

Hubungan Beban Kerja Mental, Stres Kerja, dan Motivasi Terhadap Tingkat Konsentrasi Operator Crane Perusahaan Galangan Kapal

Ship production activities at the Shipyard Company require lifting and transporting aircraft to facilitate work, one of which is a crane. Crane operators work monotonously at the wheel of the crane every day for 8 hours or even more. Concentration is needed in this job. Concentration is a state in which a person focuses his attention on an object within a certain time. Loss of concentration in the operator can lead to mismatches in work and the worst risk is the occurrence of work accidents. This study aims to determine the relationship between mental workload, work stress, and motivation with the level of concentration in crane operators. The population of this study were 35 crane operators. Sampling using total sampling technique with the entire population sampled. Measurements used the NASA-TLX questionnaire to measure mental workload, Stress Diagnosis Survey to measure work stress levels, motivation questionnaire and Grid Concentration Test to measure concentration levels. Data analysis using the chi square test, with the results showing that the independent variables that have a significance value <0.05 are mental workload with a value of 0.009 and work stress with a value of 0.044. While the motivation variable has a significance value of 0.391. The conclusion obtained is that the variables associated with the level of concentration are mental workload and work stress, while the motivation variable has no relationship with the level of concentration.

Sub-Contractor Selection in Shipyard Companies Using Fuzzy-AHP Method

Shipyard industries is one of the very complex construction jobs because there is much work to be done in parallel. Activities in the shipyard industry mostly involve sub-contractors. Although many advantages are obtained, involving sub-contractors in the company also has an impact on the company’s performance. The selection of the right sub-contractor is a crucial activity and will determine the company’s performance. This research uses the Fuzzy Analytical Hierarchy Process method (Fuzzy AHP) to solve the problem of selecting sub-contractors in the Shipbuilding Company. Alternative sub-contractors were evaluated and pairwise comparisons were made between these alternatives using Fuzzy AHP with a Triangular Fuzzy Number (TFN) approach. The TFN scale can reduce the ambiguity of expert judgment on AHP. A case study was conducted on the selection of sub-contractors with the bottom cleaning and ship replating project at shipyard company in Surabaya, Indonesia. As a result, one of the sub-contractors selected as the best sub-contractor with a score of 0.167.

Network Planning Analysis Using CPM and PERT Methods on Optimization of Time and Cost

The shipbuilding industry is the most important industry to support sea transportation in the context of maritime development. As a company engaged in shipping, the function of the shipyard is as a place for shipbuilding, ship repair, and ship maintenance. One of the activities carried out by PT. DNC as a shipyard company is to repair TK Aek Sigala-gala. Ship repair is a process of repairing or replacing ship materials that cannot be used to avoid risks that occur in the sea when the ship sails. In the implementation of project activities, the company must understand the right network so that there are no problems scheduling, planning and controlling project activities. This study aims to solve the problems faced by the company, is the delay in completion time. The data used is secondary data related to the sequence and relationship of activities, execution time, and cost budget plan (RAB). This study uses CPM and PERT methods to determine the optimal turn around time using critical path and probability concepts. The results of the CPM and PERT methods are activities on the critical path with an optimal duration of 98 days. The crashing method is to reduce the duration to 72 days with savings of Rp. 16,351,708. if the project implementer does not crash, the penalty that must be paid is Rp. 3,072,963,905.

Evaluasi Implementasi Kebijakan Asas Cabotage dalam Perkembangan Industri Pelayaran Nasional

Implementation of Cabotage Principle Policy in National Shipping Industry Development. This undertaken research based on nonoptimal implementation of cabotage principle policy in shipping industry, the policy related to shipping activities such as port load both passengers and commodities operated by national shipping company, substandard quality and quantity of port infrastructure and inadequate productivity of national company. This is a descriptive observation accomplished with qualitative approach. According to this research, the implementation of cabotage principle policy in the trade sector, the policy support the growth of national shipping industry, it could be observed that there are more national ships in the ports; in the transportation sector, the policy allowed growing shipping stakeholders to support local port activities effectively even in a small scale compared to other Asian countries; the implementation of the policy to industry sector, led the growth of national shipyard company with less consideration because domestic shipyard quite expensive and depend on import component.

Evaluasi Implementasi Kebijakan Asas Cabotage dalam Perkembangan Industri Pelayaran Nasional

Implementation of Cabotage Principle Policy in National Shipping Industry Development. This undertaken research based on nonoptimal implementation of cabotage principle policy in shipping industry, the policy related to shipping activities such as port load both passengers and commodities operated by national shipping company, substandard quality and quantity of port infrastructure and inadequate productivity of national company. This is a descriptive observation accomplished with qualitative approach. According to this research, the implementation of cabotage principle policy in the trade sector, the policy support the growth of national shipping industry, it could be observed that there are more national ships in the ports; in the transportation sector, the policy allowed growing shipping stakeholders to support local port activities effectively even in a small scale compared to other Asian countries; the implementation of the policy to industry sector, led the growth of national shipyard company with less consideration because domestic shipyard quite expensive and depend on import component.

Investigation of Noise Induced Hearing Loss at Shipyard Company, Surabaya

Introduction: Noise is a health risk that cannot be avoided in production process. Noise has the potential to cause hearing loss for workers. The bad news, noise damage due to noise is permanent. Audiometric screening at shipyard company employees found 81.2% experienced Sensory-Neural Hearing Loss. 61.5% of employees experience deafness in both ears. The research objective was to find the cause of deafness at shipyard company. Methods: A Quantitative research with cross sectional approach in 64 subjects who worked in the ship repair production unit. The sample is chosen with a simple random technique according to inclusion and exclusion criteria. Assessment was carried out using questionnaires, measurement, and direct observations. Result: The bad habit of wearing ear protectors on employees as a cause of deafness (p<.001, Coef .517**). Sound level measurement shows the activity of chipping, welding, cutting and outfitting with noise intensity more than the recommended threshold (85 dBA for 8 hour per day). Noisy sources were found such as blowers, compressors, grinders, cutting mach ines, ringlet machines, hammer blows on plates and generators. Conclusion: Hearing loss in shipyard company employees is a work-related disease caused by the poor culture of wearing ear protectors. The habits does not wear earplug/earmuff tools because its not comfortable in the ear when the appliance is used, the tools too small so its easily lost, forgetten to carry, and tool are not available.

Investigation of Noise Induced Hearing Loss at Shipyard Company, Surabaya

Introduction: Noise is a health risk that cannot be avoided in production process. Noise has the potential to cause hearing loss for workers. The bad news, noise damage due to noise is permanent. Audiometric screening at shipyard company employees found 81.2% experienced Sensory-Neural Hearing Loss. 61.5% of employees experience deafness in both ears. The research objective was to find the cause of deafness at shipyard company. Methods: A Quantitative research with cross sectional approach in 64 subjects who worked in the ship repair production unit. The sample is chosen with a simple random technique according to inclusion and exclusion criteria. Assessment was carried out using questionnaires, measurement, and direct observations. Result: The bad habit of wearing ear protectors on employees as a cause of deafness (p<.001, Coef .517**). Sound level measurement shows the activity of chipping, welding, cutting and outfitting with noise intensity more than the recommended threshold (85 dBA for 8 hour per day). Noisy sources were found such as blowers, compressors, grinders, cutting mach ines, ringlet machines, hammer blows on plates and generators. Conclusion: Hearing loss in shipyard company employees is a work-related disease caused by the poor culture of wearing ear protectors. The habits does not wear earplug/earmuff tools because its not comfortable in the ear when the appliance is used, the tools too small so its easily lost, forgetten to carry, and tool are not available.

Environmental risk assessment on ship repair work at cilegon national shipyard company

The main objective of this study is to develop an Environmental Risk Assessment at PT. X shipyard in the ship repair process by developing a risk matrix and identifying potential that can be caused when repairing the ship. Ship is an important and vital facility particularly as transportation mode and as part of inter-regional Community’s Economic Development Infrastructure Data obtained from national shipbuilding companies in the Cilegon area. Data collection and analysis is carried out following the ship repair process. Environmental risks that are classified as heavy are sandblasting dust and the ship painting process which is classified as heavy in the category of environmental pollution standards from other activities.

KOMITMEN MANAJEMEN, PENGETAHUAN K-3 & SIKAP K-3 DENGAN PENERAPAN SMK-3 PADA PEKERJA

The application of sophisticated technology, machines, installations, and hazardous materials are increasing in relation to industrialization. These could facili-tate the production activities, however they could also give potential danger. This research is intended to identify the correlation and influence between commitment of management, the knowledge of safety, and attitude toward safety in regards to the implementation of OHS management system among the workers of PT. X Batam Shipyard Company. This is an analytical correlative research with a cross-sectional design. The research subjects are 63 persons, consist of supervisors and employees who work at the production division of PT. X Batam. The type of analy-sis used Pearson Product Moment Correlation and multiple regression tests. The result shows that there is a positively significant correlation and influence between commitment of management, the knowledge of safety, and attitude toward safety in regards to the implementation of OHS management system (R = 0651; p = 0.000), which has 42,4% contribution simultaneously. The result shows that commitment of management give the higher correlation and influence to the implementation of OHS management system (r=0,495; p=0,000), which has 22,13% contribution, followed by attitude toward safety (r=0,372; p=0,003) which has 12,17% contribution, and the knowledge of safety (r=0,321; p=0,010) which has 8,1% contribution.

The analysis of safety culture of welders at shipyard

Welding have several potential to cause work accidents. Therefore, it is necessary to prevent work accident, one of them through safety culture. Safety culture is made up of three factors: psychological factors, job factors, and situational factors. The purpose of this study is to analyze safety culture based on the factors of safety culture in welders in shipyard company. This research was an observational research using cross-sectional design. The variables were safety climate, safety behavior, and safety culture. The results showed that most respondents had a very good perception of OSH and the safety climate profile was in a good category, most respondents had good safety behavior and safety behavior profile was in a good category. In addition, most respondents had a very good safety culture and profile of safety culture was 74,89 and in a good category. Based on these results, it is expected to develop the safety culture and make some efforts to improve the safety behavior of welder. The management of this shipyard company may take action to perform an analysis of safety culture level as a form of oversight of the existing safety culture. © 2018, Indian Journal of Public Health Research and Development. All rights reserved.

Dynamics of Users’ Core Features Set Usage

Understanding the dynamics of users’ core features set usage is a necessary condition for increasing the productivity of workers’ performance. Drawing on the method of bi-partite network and the “Pareto's Law” principle, all users were divided into senior managers, functional managers and operational-level employees based on the hierarchical level, a user-feature bipartite network model was brought forwarded and an empirical analysis was conducted by using the log data of a shipyard company with 763440 computer logs to study the dynamics of users’ core features set usage, including analyzing the difference of core features set usage in different hierarchical levels and understanding the dynamics of core features set usage in each hierarchical level. The results indicate that (1) users in different hierarchical levels use different core features sets; (2) the dynamics of core features set usage in each hierarchical level tend to be stable over time.

조선업에서 사무직과 생산직 근로자의 직무스트레스 평가에 관한 연구

In recent years, Korea's shipbuilding industry have expanded its business into offshore plant. These changes are increasing the interest on job stress in shipbuilding industry. The purpose of this study is to investigate the differences of job stressors between white and blue-collar workers. The survey was using Korean Occupational Stress Scale(KOSS) questionnaire and was administered to 8,080 workers of large shipyard company. As a result of the survey, compared with the median score of Korean workers, job stress level of shipyard company workers was low. However, seven categories of KOSS, except for job demand showed higher stress levels of blue-collar workers than white-collar workers. The overall stress level of shipyard company workers is low, however, it is important to find stressors by considering the type of work, working period etc., through a detailed analysis of KOSS 8-categories. The results of this study may be helpful to identify the level of stress and to establish preventive measures in Shipyard Company.

Hearing loss in shipyard employees.

Background:Noise-induced hearing loss (NIHL) is one of the most prevalent occupational illnesses, with a higher incidence in the heavy industry.Objectives of the Study:The aim of this study is to investigate the prevalence of NIHL in Greece and explore its correlations with other job and individual-related factors.Materials and Methods:Questionnaires were administered, and audiograms were conducted to 757 employees of a shipyard company in Greece, both white- and blue-collar, during the period 2006–2009. A modification of the 1979' equation of the American Academy of Otolaryngology was used to calculate hearing loss. Statistical analysis was conducted by means of the SPSS v. 17.Results:A 27.1% of the employees were hearing handicap. Hearing loss was correlated with age, past medical history of ear disease (Meniere's disease, acoustic neuroma, otosclerosis) or injury, hyperlipidemia, job title and level of education. A few questions on subjective hearing ability and symptoms showed strong discriminatory power of hearing pathology.Conclusions:The results of this study emphasize the burden of disease in the shipyard industry, and the need for continuous monitoring, implementation of preventive measures and hearing conservation programs.

INTEGRASI PROSES BISNIS PADA PERUSAHAAN GALANGAN KAPAL PT “XYZ” SHIPYARD MENGGUNAKAN OPENERP

In the shipyard industry, ships produced by order and adjust to consumer demand. Business processes that occur at the shipyard company in the shipbuilding process through several stages, ranging from design to delivery. Processes are still done manually so it may cause some difficulty and time. For the solution, system capability is needed to accelerate the business process. This research considers the OpenERP implementation at PT. XYZ as an application for integrating business processes. The results of this study indicate that OpenERP can answer the problems faced by the business process shipyard company. By using this ERP system offers company integrated system, but success depends on the ERP system implementation strategies are applied. Users can take benefit from the ERP system. The problems of this migration system are on tradition, culture, time and cost.

Sickness Absence in the Private Sector of Greece: Comparing Shipyard Industry and National Insurance Data

Approximately 3% of employees are absent from work due to illness daily in Europe, while in some countries sickness absence exceeds 20 days per year. Based on a limited body of reliable studies, Greek employees in the private sector seem to be absent far less frequently (<5 days/year) compared to most of the industrialized world. The aim of this study was to estimate the levels of sickness absence in the private sector in Greece, using shipyard and national insurance data. Detailed data on absenteeism of employees in a large shipyard company during the period 1999–2006 were utilized. National data on compensated days due to sickness absence concerning all employees (around 2 million) insured by the Social Insurance Institute (IKA, the largest insurance scheme in Greece) were retrieved from the Institute’s annual statistical reports for the period 1987–2006. Sick-leave days per employee and sick-leave rate (%) were calculated, among other indicators. In the shipyard cohort, the employment time loss due to sick leave was 1%. The mean number of sick-leave days per employee in shipyards ranged between 4.6 and 8.7 and sick-leave rate (sickness absenteeism rate) varied among 2% and 3.7%. The corresponding indicators for IKA were estimated between 5 and 6.3 sick-leave days per insured employee (median 5.8), and 2.14–2.72% (median 2.49%), respectively. Short sick-leave spells (<4 days) may account at least for the 25% of the total number of sick-leave days, currently not recorded in national statistics. The level of sickness absence in the private sector in Greece was found to be higher than the suggested by previous reports and international comparative studies, but still remains one of the lowest in the industrialized world. In the 20-years national data, the results also showed a 7-year wave in sickness absence indexes (a decrease during the period 1991–1997 and an increase in 1998–2004) combined with a small yet significant decline as a general trend. These observations deserve detailed monitoring and could only partly be attributed to the compensation and unemployment rates in Greece so other possible reasons should be explored.

Sociopsychological factors associated with symptoms of work-related musculoskeletal disease

Objectives: The sudden increase in work-related musculoskeletal disease is caused by sociopsychological factors and ergonomic risk factors of the work process. This study evaluates the relationship between the symptoms of musculoskeletal disease and the sociopsychological factors. Methods: A questionnaire survey and ergonomic evaluation were administered to workers of a shipyard company with a high incidence rate of musculoskeletal disease. To quantify the pain score associated with a diagnosis of musculoskeletal disease, the pain degree(1~5points), frequency (1~4 points) and duration (1~4 points) were multiplied to give a maximum score of 80. A score above 64 points on the pain score was defined as ‘severe pain group’. This ‘severe pain group’was chosen as the dependent variable and the sociopsychological factors were evaluated as independent variables with structural equation modeling based on a decision tree of exhaustive CHAID. Results: The standardized regression weights value with reference to the REBA score(0.54) had the largest value by the type of company, followed in order by joining and acting labor union(.313), job demand(.172), senior support(-.095), insufficient sleep (.092), and colleague support (.061). Conclusion: The symptoms of musculoskeletal disease were greatly affected by sociopsychological factors such as whether joining and acting labor union, job demand, and supervisor or Coworker support.

Study of noise exposure and high blood pressure in shipyard workers.

A cross-sectional and case-reference study of occupational noise exposure and blood pressure was conducted in a shipyard company. There were 158 male workers from the higher noise environment (greater than 85 dBA) and 158 matched workers from a lower noise environment (less than 80 dBA). The workers in the higher noise environment had higher systolic and diastolic blood pressure (p less than .05) after adjusting for confounding factors. Comparison of regression revealed that there is no different increase in blood pressure with age in different environmental noise exposure. Based on 63 matched hypertensive-normotensive pairs from 2,730 shipyard workers, the relative risk of hypertension among workers exposed to an over-85-dBA acoustic environment, compared to those under 80 dBA, was 2.38. It is suggested that there may be a population of noise-exposed workers at increased risk of high blood pressure.