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Awareness of potential hazards, risks of accidents, and the need for preventive measures is a must to create a safe and healthy working environment for all workers.  The choice to implement a hydrant system is seen as an effective preventive measure in addressing potential fire risks, which are a major threat to the warehouse environment.  Thus, this research planning has not only a purely academic purpose, but also seeks to make practical contributions to strengthening the application of the Principles of Occupational Safety and Health in the industrial sector.  The planning research was done by jumping directly into the field and the data source was obtained from interviews with local authorities.  This research describes the design of the hydrant system in order to be able and meet the safety standards set by the NPFA. The results of the conservation of the warehouse of PT. Putraduta Buanasentosa then the author was able to describe the building based on the construction of the building. The warehouse PT. Putraduta Buanasentoza requires hydrant boxes of 6 pieces. The water requirements for the fire protection system based on NFPA have been calculated by considering the building size as well as the risk of fire with hydrant 6 pieces and 1 hydrant pillar, requires 4800 liters of water/minute and to extinguish the fire in the event of a fire requires a time of 15 minutes where the required water requirements in 15 minutes is 72.000 litres of water.

The research area is prone to flooding, which could potentially result in losses for the people of the research area. Based on this, it is important to map flood-prone areas, as a form of flood disaster mitigation effort to reduce the level of flood risk. Hazard mapping is an important stage in the process of disaster risk identification and analysis. Mapping flood-prone areas can use various methods or approaches. Approaches that can be used for assessing or mapping flood hazards are the geomorphological approach and community participation. This type of research is quantitative descriptive, namely a type of investigation that explains or explains a problem. Descriptive studies aim to explain populations, situations or phenomena accurately or systematically. Mapping flood hazards in the Koto Tangah District, Padang City. From the results of the analysis of the level of flood vulnerability above, the relationship between this research is that rainfall is too high and low river beds cause water to overflow into lowlands, causing the level of flood vulnerability to increase as time goes by. So The results obtained from the analysis of Flood Hazard Area Mapping are the area of ​​Koto Tangah sub-district is 22.017,43ha, by getting the level of non-prone areas with an area of ​​10.203.16ha, the level of less-prone areas with an area of ​​4.714.168ha, the level of vulnerable areas with an area of ​​3.990.458ha, the level of very vulnerable area with an area of ​​1.893,630ha. Koto Tangah District, Padang City has five levels of danger zones for flooding, based on the results of the parameter data used. Each parameter used greatly influences the level of flood risk in Koto Tangah District, Padang City, namely river buffer, land use, land height, land slope, soil type and rainfall. From the creation of flood prone levels in Koto Tangah sub-district, Padang city, areas with a very high risk of flooding are 10.68% with an area of ​​1892,630 ha, areas with a danger level of flood prone are 14.68% with an area of ​​3990,458 ha, areas with Kuang's flood-prone level is 21.40% with an area of ​​4714,168 ha, the area with a flood-safe level is 46.32% with an area of ​​10,203.16 ha.

Porous concrete has high porosity so that water can pass through the cavities in the concrete. The application of porous concrete is usually for parking areas, pedestrian sidewalks, road shoulders, drainage, roads with low traffic volume. Indonesia is an archipelagic country, most of Indonesia's territory is by the sea so it is very possible to use sea water as a substitute for fresh water for porous concrete. This research aims to determine the comparison of compressive strength of porous concrete mixed with sea water and normal porous concrete with variations in the water cement (fas) factor. In this study, a concrete mixture with a water cement (fas) factor of 0.30 and 0.35 was used. The test object used was a 15x30 cm cylindrical concrete test object for the compressive strength test. The test on porous concrete was carried out during the curing period of 28 days. The test results for the compressive strength of normal porous concrete with a water cement (fas) factor of 0.30 and 0.35 are 6.658 Mpa and 4.435 Mpa, then for porous concrete mixed with sea water with a water cement (fas) factor of 0.30 and 0, 35, namely 6,700 Mpa and 3,374 Mpa. The test results show that the sea water mixture in porous concrete does not affect the compressive strength of porous concrete, whereas the use of variations in the water cement factor (fas) shows that the compressive strength of porous concrete, both normal porous concrete and porous concrete mixed with sea water, has decreased. as the value of the water cement (fas) factor used increases.

Sustainable Development Goals (SDGs) are a global action plan agreed upon by world leaders, including Indonesia, to achieve sustainable development in all aspects, especially in the use of renewable energy sources. For Indonesia, the implementation of SDGs can contribute to the country's progress and development, especially in the use of solar energy as an alternative energy source. Solar energy consistently dominates the expansion of renewable energy capacity, making it the main focus of sustainable development efforts in Indonesia. In fact, solar energy accounted for 73% of renewable energy growth last year, reaching a capacity of 1,419 GW, followed by wind energy with a 24% share in renewable energy expansion. The emphasis on solar power and other renewable energy sources is in line with Indonesia's goal of becoming a fully developed country. The research method used in this scientific article is the literature study method. A literature review that focuses on a particular topic to identify a theory or method, develop the theory or method, and summarize its development. Therefore, the aim of this paper is to reveal that the role of solar energy in increasing energy efficiency is very important and is growing very significantly every year.

Waste management is something that must receive extra attention from the community itself and from actors whose activities produce remnants of production that will be disposed of, with all consideration of the impacts resulting from the waste, both good and bad impacts, a waste management is needed so that waste-producing parties can wisely treat the rest of their productivity activities. Which is where the ultimate goal can create a social life in a healthy, peaceful, safe, and comfortable society so as to minimize and even eliminate social conflicts that occur due to waste problems in society.  

The development of environmentally friendly technology for processing solid waste towards waste-free production is an important step in maintaining environmental sustainability. Solid waste generated from various sectors has the potential to pollute the environment if not managed properly. The purpose of this article is to discuss the importance of developing environmentally friendly technology in processing solid waste towards waste-free production. The method used in writing this article is using the literature review method. Literature reviews are used to collect information about the types of solid waste produced in Indonesia, technologies that can be used to manage solid waste, as well as the concept of clean production or zero waste production. The development of environmentally friendly technology is the main key in overcoming the solid waste problem, with the potential to create new economic opportunities. To achieve waste-free production, cooperation between government, industry, academia and society is needed. With good cooperation, solid waste management towards waste-free production can become a reality that provides great benefits for the environment, economy and community welfare.

Concrete is an artificial stone made from a mixture of cement, sand, aggregate and water. For this reason, this construction material is considered very important to continue to be developed. One effort to develop is by improving the weak properties of the concrete itself. From this, researchers will use additional materials such as fiber palm fiber and sika visconcrate in the concrete mixture. Fiber fiber itself has durable properties and does not rot easily in open conditions or embedded in the ground, while sika visconcrate is a chemical that is used as an additive in the mixture to increase the workability, quality and strength of concrete with the desired properties. The method used in this research is quantitative experimentation. The aim of this research is to determine the characteristics of concrete using palm fiber and sika visconcrate with variations of 3%, 5% and 7% from normal concrete. The results of the research show that the average compressive strength of normal concrete is 25,572 MPa, 3% SI+SV variation concrete has an average of 27,365 MPa, 5% SI+SV variation concrete has an average of 26,704 MPa, and 7% SI+ SV variation concrete The average is 26,044 MPa. The split tensile strength test results of normal concrete averaged 6.074 MPa, 3% SI+SV variation concrete averaged 6.444 MPa, 5% SI+SV variation concrete averaged 7.852 MPa, and 7% variation concrete averaged amounting to 8,148 MPa.    

Concrete is a rock made from a mixture of cement, sand, aggregate and water. For this reason, this construction material is very important to develop. One effort to develop it is by utilizing industrial waste. Like other industrial waste, wood ash waste can also be used as a partial replacement for cement. The aim of this research is to determine the effect of adding wood ash as an additive to cement on the compressive strength and tensile strength of concrete, as well as to determine the effect of varying the percentage of wood ash in the concrete mixture on the compressive strength and split tensile strength of concrete. The type of research used in this research is quantitative research with experimental methods, namely by comparing normal concrete with 3 variations of mixture to determine the compressive strength and splitting tensile strength of the concrete. The results of the research showed that the experimental compressive strength and split tensile strength of concrete on normal concrete and variations of 3 mixtures, namely 2%, 4% and 6% of cement, obtained experimental results on the compressive strength of concrete for 28 days of normal concrete with an average of the average of 25,478 Mpa decreased with a 2% variation with an average of 24,723 Mpa, and decreased drastically for a 4% variation with an average of 19,439 Mpa, and for a 6% variation with an average of 18,967 MPa. Meanwhile, in testing the split tensile strength of normal concrete with an average of 7.185 Mpa, it experienced an increase from normal concrete with a variation of 2% with an average of 7.333 Mpa, and experienced a decrease from normal concrete with a variation of 4% with an average of 6.667 Mpa, and 6%. with an average of 6 Mpa. So it can be concluded that concrete with a variation of 2% wood ash does not really affect the compressive strength of the concrete, but the more wood ash that is added, the compressive strength of the concrete will decrease. From this research it can be concluded that the use of wood ash does not achieve the planned compressive strength so it is not suitable for use in construction.                                                                                                                                                         

One of the modes of transpotation available at the Central Market of Polewali Mandar District is a motorized rickshaw. Motorized becak is a modification of traditional becak with motorized vehicles such as motorcycles. The benefits of this research are for consideration by motorized pedicab drivers in order to improve the quality of service to passengers. The results of the analysis using the help of SPSS version 26 software from 100 questionnaire samples distributed with reference to the three factors in this study, namely service quality, safe and comfortable, and bentor tariffs are able to influence the ups and downs of public satisfaction with motorized rickshaw services by 65.6%. Then in partial testing or t test shows that the service quality variable has a result of 0.974, the safe and comfortable variable is 2.342 and the bentor tariff variable with a result of 6.705. This shows that the bentor tariff variable is the factor that is most able to influence the satisfaction of motorized rickshaw consumers in the Central Market of Polewali Mandar Regency.

With the development of science and technology, the need for energy is getting bigger. influenced by an increase in population and human needs. One example of energy needed by all parties, including industries, is electrical energy. Electrical energy is an energy that cannot be separated from everyday life, where almost all equipment uses electrical energy both in industry and in development itself which is one of the factors that demand the supply of electrical energy. One of the most important equipment in the PLTU, namely the drive on the conveyor belt, is a 380 V electric motor. Electric motors are prone to being overloaded because they are used too often to reach the target, and also because these electric motors are often exposed to dust from coal which can cause the electric motor to accumulate dirt in the electric motor where the electric motor becomes obstructed and when it reaches letting it sit continuously can make the electric motor not optimal in operation and can be totally damaged.

Waste management poses an inevitable challenge in human life and is often poorly handled. One type of waste causing significant issues is solid organic waste from households, which can lead to unpleasant odors and soil and water pollution due to its high organic content. However, the potential of organic waste to be converted into biogas, as an alternative energy source, can be harnessed through anaerobic processes. In this experiment, the researchers aimed to observe the effectiveness of adding additives to organic waste with varying doses. The organic content in the substrate for anaerobic microbes was represented by VS (volatile solid), with the inoculum sourced from cow dung. The experiment results indicate that adding NPK fertilizer additives with different doses increases biogas production. This suggests that the use of NPK additive can enhance the efficiency of anaerobic processes in generating biogas from organic waste.

Distribution transformers have a very important role in the electric power system. The lifespan of transformers in electric power systems will decrease over time. The reduced service life of distribution transformers is caused by several factors, including loading, ambient temperature, transformer winding temperature and transformer oil temperature. The author uses quantitative and qualitative research types. This research was conducted to determine the remaining useful life of distribution transformers. The data used in this research are transformer template data and peak load data during the day and night. The results of data processing obtained state that the first transformer's estimated remaining life with a load > 80% is 18 years starting from 2023, the second transformer's estimated remaining life with a load > 80% is 16 years starting from 2023, for the third and fourth transformers it is not calculated because it has been used since 1982 or is around 41 years old. For the winding temperature on the first transformer LBP 84 ℃ and BP 89 ℃, on the second transformer the winding temperature LBP 81 ℃ and BP 96 ℃. Both transformers are still considered good because the hot spot temperature is below the maximum limit set by the IEEE in 1955, namely a temperature of 98 ℃.  

XYZ is a manufacturing company that produces Polypropylene Woven Bags (plastic sacks). This company uses a make to order production system. The aim of this research is to analyze the consequences of damaged products for plain white sacks and printed sacks in the cutting sawing division. The method used in this research is the seven tools method. From the seven tools analysis, namely the plain white BS sack type at 52% and the printed BS sack type at 48% and the most dominant was the plain white BS sack type with a number of defects of 2,333 pcs or 256.63 kg of sacks for 27 days in the cutting division. sawing. And from the results of the fishbone diagram, there are 5 main factors, namely: humans, machines, materials, methods and environment. The most dominant cause is the human factor. Operators who are less thorough and dexterous, operators who are less competent result in sacks being made that are not perfect, therefore quality control must be carried out on the product.    

Self Compacting Concrete (SCC) is an innovative concrete that can compact itself (without vibrators) and flow under its own weight to saturate the shape without segregation. The SCC material is not much different from ordinary concrete, namely coarse aggregate, fine aggregate, cement, water, only SCC has additional ingredients such as superplasticizer. This research uses quantitative methods. The aim of this research is to determine the workability, compressive strength, flexural strength of SCC concrete with the addition of 2% fiberglass to each sample with added material in the form of sika visconcrete with variations of 0%, 1%, 1.5%, and 2%, % of the cement weight. Slump flow testing was carried out which was obtained from several variations of SV `0%, 1%, 1.5%, 2%, the slump flow values were obtained for 80 mm fiber concrete and 550 mm, 575 mm, 600 mm SCC concrete with the time taken to reach 500 mm of 4.25 seconds, 3.57 seconds and 2.11 for SCC concrete. The compressive strength value of the cylinder size (15 x 30) in samples BFS0, BFS1, BFS2BFS3 aged 28 days obtained a compressive strength of 30.29 Mpa, 34.44 Mpa, 31.23 Mpa, while the flexural strength test of the beam was 15 x 15 x 60 d samples BFS0, BFS1, BFS2BFS3 obtained results of 3.11 Mpa, 4.35 Mpa, 3.64 Mpa and 3.29 Mpa, excessive use of visconcrete in the concrete mixture can reduce the strength of the samples.

Bawasalo beach sand shows the potential of abundant material resources, but local people still face several considerations in the use of this material. The purpose of this research is to determine the characteristics and effect of the addition of bawa salo sand on compressive strength and split tensile strength. This research uses an experimental method carried out at the Structure and Materials Laboratory of Muhamadiyah University of Parepare using a sample of 27 cylinders with the compressive strength of the plan used is 25 Mpa. Based on the test results, the characteristics of Bawasalo beach sand have met the specifications to be used as fine aggregate for concrete mixtures. The results of normal concrete testing aged 7 days with an average of 17.41Mpa, at 28 days testing with an average of 27.77MPa, 50% variation aged 7 days with an average of 16.84MPa and 100% variation aged 7 days with an average of 13.16MPa and at 28 days testing with an average of 21.80MPa. Normal concrete testing aged 28 days 10.444 MPa, 50% variation with an average of 5.556 MPa and as for the 100% variation with an average of 3.889 MPa. Based on the results of research data analysis, compressive strength and split tensile strength decreased as the percentage of Bawasalo beach sand use increased.

The movement of the Sumatran fault is triggered by plate activity in the western subduction zone of Sumatra, namely the Indo-Australian plate which moves down the Eurasian plate, causing pressure to push the Sumatra region towards the north. The purpose of this study is for the results of Ascending and Descending data on the impact of faults that occur on the Semangko Segment Sianok fault from 2020-2023 and to map the Land Displacement of the Semangko Segment Sianok fault from 2020-2023. Based on the results of data processing in this study, it can be concluded that in this study using ascending and descending direction data that experienced land movement (Land Displacement) due to this movement the impact of faults that occurred due to seismic activity along the segment resulted in the impact of natural disasters such as landslides, and earthquakes. This impact was triggered due to land movement because the effects of surface faults and ground shaking did cause most of the damage in several events. The ascending data explains the annual uplift of 15.28 mm marked in dark blue and the red color on the map shows the subsidence of -30.55 mm per year, while the light bitu color dominates in urban areas or areas inhabited by many people. While in the descending data, changes in land movement show an annual uplift of 6.74 mm and the red color shows subsidence of -13.47 mm per year. From the color change of each data shows ascending and descending data experiencing land subsidence uplift and subsidence.

The need for electrical energy in modern life is crucial; however, conventional energy sources such as coal, gas, oil, and nuclear have limitations in their availability. Therefore, people are searching for renewable alternatives for electrical energy. This study aims to evaluate the voltage, current, and revolutions per minute generated by a DC generator, as well as the efficiency of a turbine intended for emergency lighting in a tent. The research involves testing the turbine at seven different head heights, ranging from 20cm to 80cm. In this experiment, a water pump with a flow rate of 5 liters per second is used to supply power to three 8-watt DC lamps. The research results indicate that the maximum power that can be generated for tent lighting is approximately 20.83 watts, with an efficiency of 61.09%, achieved at a head turbine height of 50cm.

One of the government's efforts to protect the environment in the Indonesian industrial sector is by establishing laws and regulations that become a reference for the public and business actors and/or activities related to the environment. The government, through the Ministry of the Environment, issued regulations in the form of PROPER as an evaluation of industrial performance in environmental management. Based on the PROPER program mentioned above, the East Java Provincial Government is implementing the Environmental Trust Business/Activity Development Program or known as PUSAKA, which aims to provide environmental management guidelines based on environmental permits held by businesses and/activities (non-PROPER) in East Java. The PUSAKA mentoring program is used to prepare business actors and/or activities in East Java to achieve PROPER. Apart from that, it can also improve environmental management performance in business entities and/or activities in East Java Province, especially PT X. The PUSAKA development program has been successful in becoming a trigger for evaluating PT X's environmental management. Because it succeeded in increasing compliance with PPA and PLB3 by 85.7% and 3.75%.

The absence of student textbooks in the new Creative and Entrepreneurial Project subjects in accordance with the current Merdeka Curriculum causes students to be less familiar with Creative and Entrepreneurial Project material. Therefore, researchers developed an Augmented Reality-Based Creative and Entrepreneurial Project Teaching Book. The research conducted is a type of research and development (research and development). The product development model uses the ADDIE model which consists of Analyze, Design, Development, Implementation, and Evaluation. The development of textbooks uses augmented reality as a supporting media in textbooks. This research design adapts the One Group Pretest Posttest Design, with data collection techniques using questionnaires, observations, and tests. The research subjects involved 28 students of class XI Audio Video Engineering 2 at SMK Negeri 1 Kediri and validators consisting of two lecturers in the Electrical Engineering Education Study Program, and one teacher teaching Creative Projects and Entrepreneurship subjects at SMK Negeri 1 Kediri. The results showed that the level of validity of the textbook in terms of expert assessment was 91% with very valid criteria. The level of practicality of the book in terms of students' responses was 93% with very practical criteria. Learning outcomes with multiple choice tests showed an average pretest score of 64.64, while the average posttest score was 88.04. Based on the Wilcoxon test which shows the difference or increase in pretest and posttest scores has a significance value of 0.000. The significance value of the calculated results thus falls in the H0 rejection area because the significance value of 0.00 <0.05, in other words that the pretest and posttest scores have a significant difference or increase. Based on the calculation and analysis of student learning outcomes data, it can be concluded that the Augmented Reality-Based Creative and Entrepreneurial Project Teaching Book developed is effective in improving student learning outcomes.

The importance of K3 in the tugboat bunkering process is not only limited to safety aspects, but also has a direct impact on ship readiness. Implementing good K3 ensures that bunkering is carried out in accordance with existing procedures. In addition, implementing good K3 will support the operations of ships that have been bunkered so that the ship can continue to operate effectively in supporting various maritime transportation needs. The research method used is the HIRADC (Hazard Identification Risk Assessment Determining Control) method. HIRADC is a method of risk management. For data collection techniques in this research, field observations, interviews and company data were used. In this data analysis and discussion, an analysis of the data processing that has been carried out will be carried out, namely identifying potential risk values ​​and considering the risk ranking to determine priorities and methods of control. After the data analysis and discussion, the next step is to draw conclusions from the data analysis that has been carried out. In the process of filling a ship with fuel (bunker), various dangers or risks can arise throughout the stages of the activity. Hazard identification involves recognizing and documenting the various potential elements that could cause an accident or health problem. For example, slipping, being pinched, being hit by a fuel pump hose during the bunkering process are also aspects that need to be identified as dangers. The work activity identified in this research is the activity of filling the ship with fuel (bunker), then carrying out a risk assessment of the work activity, then determining the necessary hazard and risk controls with the aim of preventing accidents. Data processing will be carried out using the HIRADC method. This step will later become input and suggestions that can be implemented at PT Pelindo Marine Service as a reference for determining steps to deal with work accidents that occur. The importance of identifying hazards in ship bunkering activities is to develop effective prevention strategies and ensure that appropriate safety measures are taken. For example, if hazards related to slips and falls are identified, measures such as special training for operators, use of personal protective equipment (PPE), and strict implementation of standard operating procedures (SOPs) can be impl