scholarly journals Governance in Occupational Safety and Health in the Aspect of Indoor Air Quality in Malaysia

2018 ◽  
Vol 8 (3) ◽  
Author(s):  
Sytty Mazian Mazlan ◽  
Muhammad Rizal Razman ◽  
Kadir Arifin
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Occupational Safety And Health ◽  
Safety And Health

scholarly journals Design and Develop Low-Cost Device on Monitoring Environmental Indoor Air Quality in Factory

2020 ◽  
Vol 4 (4) ◽  
pp. 6-11
Author(s):  
Mohd Azrin Mohd Said ◽  
Keyword(s):  
Carbon Monoxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Low Cost ◽  
Occupational Safety And Health ◽  
Percentage Error ◽  
Safety And Health ◽  
Red Led

Environmental indoor air quality is one of the major concerns in occupational safety and health issues related to workers. Nowadays, the evolving of Internet of Things (IoT), the monitoring of the surrounding environmental desired parameters is more fascinating with the use of various sensors. Real time data now can be monitored with the Wi-Fi connection where the data being transfer across the network cloud with different platform service. This research focus is on the environmental monitoring for indoor air quality in terms of carbon monoxide (CO) in selected palm oil mill factory. This project aims to benefit the workers in a way where air quality is monitored. This low-cost device air quality monitoring (LCDAQM) used an ESPduino-32 to collect and process sensed data to the ThingSpeak platform service that can be monitored through web based or apps. The level of the carbon monoxide (CO) will light up the red LED when reach more than 50ppm which was set by OSHA. Result shows that level of CO in factory is unhealthy and need future engineering control action. The validation between LCDAQM and RS CO meter show the percentage error of 14.41%. Therefore, this study will help workers and factory to monitor and reduce the occupational safety and health (OSH) related problems to indoor air quality in factory.

scholarly journals Sewage Sludge Incorporating Into Fired Clay Brick: Indoor Air Quality Testing

2019 ◽  
Vol 8 (12) ◽  
pp. 1113-1118
Keyword(s):  
Air Quality ◽  
Sewage Sludge ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Clay Soil ◽  
Raw Materials ◽  
Treatment Plant ◽  
Clay Brick ◽  
Huge Amount

Sewage industry have generated huge amount of sewage sludge. It is found that the amount of sewage sludge generated by Malaysia sewerage companies has reached 5.3 million m3 per year. Sewage sludge (SS) are usually disposed into a landfill or incineration but due to the huge amount of sludge produced and limited availability of lad, it has become an environmental hazard. Thus, this research was conducted to utilize sludge that resulted from the wastewater treatment plant into fired clay brick as well as contributed to other alternative disposal method for the sludge. This research focuses on the investigation of indoor air quality of fired clay brick incorporating with SS. The SS was collected from IWK located at Senggarang and Perwira whilst clay soil was collected at Yong Peng, Johor. The characteristics of SS and clay soil were analyzed using X-ray fluorescence (XRF). From the results, it showed that SS was high with silicon oxide (SiO2 ) and zinc (Zn) that makes it compatible to replace clay soil as raw materials. Next, two types of sewage sludge brick (SSB) which are Senggarang brick (SB) and Perwira brick (PB) were incorporated with 0%, 1%, 5%, 10% and 20% of SS respectively. Then, the compressive strength test was conducted in accordance with the British Standard BS 3921: 1985. Based on the result, it shows that 5% of SS replacements as clay soil into fired clay brick have achieved the optimum strength. As for the indoor air quality (IAQ) test were done in walk-in stability chamber (WiSC) and the gas emission was compared with the Industry Code of Practice on Indoor Air Quality (ICOP-IAQ) through Department of Occupational Safety and Health Malaysia (DOSH, 2010). From the result, IAQ brick for SB and PB showed that up to 5% in fired clay brick were complied with the standard which below the acceptable limit that has provided for wall, column and cube formed. Thus, as a conclusion this method provided an alternative disposal method for the SS whilst producing a new low-cost building material with no negative effect to human as well as benefit to the environment.

Case study of odor and indoor air quality assessment in the dewatering building at the Stickney Water Reclamation Plant

2012 ◽  
Vol 65 (4) ◽  
pp. 773-779 ◽  
Author(s):  
Manju Sharma ◽  
Susan O'Connell ◽  
Brett Garelli ◽  
Chakkrid Sattayatewa ◽  
Demetrios Moschandreas ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Control Strategies ◽  
Productivity Loss ◽  
Exhaust System ◽  
System Capacity ◽  
Water Reclamation ◽  
Emission Rates

Indoor air quality (IAQ) and odors were determined using sampling/monitoring, measurement, and modeling methods in a large dewatering building at a very large water reclamation plant. The ultimate goal was to determine control strategies to reduce the sensory impacts on the workforce and achieve odor reduction within the building. Study approaches included: (1) investigation of air mixing by using CO2 as an indicator, (2) measurement of airflow capacity of ventilation fans, (3) measurement of odors and odorants, (4) development of statistical and IAQ models, and (5) recommendation of control strategies. The results showed that air quality in the building complies with occupational safety and health guidelines; however, nuisance odors that can increase stress and productivity loss still persist. Excess roof fan capacity induced odor dispersion to the upper levels. Lack of a local air exhaust system of sufficient capacity and optimum design was found to be the contributor to occasional less than adequate indoor air quality and odors. Overall, air ventilation rate in the building has less effect on persistence of odors in the building. Odor/odorant emission rates from centrifuge drops were approximately 100 times higher than those from the open conveyors. Based on measurements and modeling, the key control strategies recommended include increasing local air exhaust system capacity and relocation of exhaust hoods closer to the centrifuge drops.

scholarly journals Assessment of Occupational Safety and Hygiene Perception among Afro-Caribbean Hair Salon Operators in Manchester, United Kingdom

2019 ◽  
Vol 16 (18) ◽  
pp. 3284 ◽  
Author(s):  
Haruna Musa Moda ◽  
Debrah King
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Risk Perceptions ◽  
Occupational Safety ◽  
Musculoskeletal Diseases ◽  
Working Environment ◽  
Musculoskeletal Symptoms ◽  
Potential Health ◽  
Hair Salon

Because of exposure to a number of potential health hazards within the work environment, hairstylists experience occupational diseases that include occupational asthma, skin conditions and musculoskeletal diseases. The paucity of studies assessing occupational safety and hygiene management among Afro-Caribbean hair salon operators in the UK promoted the study. QualtricsTM was used to assess the participants’ perception of exposure to hair products and their personal safety and hygiene knowledge, attitudes, awareness, and risk perceptions at work. In five salons, indoor air quality was monitored over one working week for selected environmental pollutants: temperature, humidity, CO, CO2 and Total Volatile Organic Compounds (TVOCs) using a GrayWolf Direct Sense Indoor Air Quality-IAQ (IQ-610). The use of unflued gas heating to raise the indoor temperature was common among the salons’ operators which explains the high carbon monoxide readings recorded. Itchy eyes and nose (44.4%) shoulder, neck and back pain (39.2%) were frequently reported. Age-stratified analysis of reported occupational ailments showed participants within an age bracket of 31–35 reported allergies (24%) and itchy eyes and nose (19.1%) as the most common of occupational ailments. Respiratory, skin and musculoskeletal symptoms ranked as major occupational ill-health experiences among the study population. The study outcome demonstrated that the type of activity and the hair products used play an important role in the level of pollutants in the working environment. The substitution of the more harmful hair products with safer alternatives is needed, as is the encouragement of health surveillance.

INDOOR MICROBIAL CONTAMINATION AND ITS RELATION TO PHYSICAL INDOOR AIR QUALITY (IAQ) CHARACTERISTICS AT DIFFERENT LABORATORY CONDITIONS

2015 ◽  
Vol 77 (24) ◽  
Author(s):  
Hazrin, A. H. ◽  
Anis Syazana, A. A. ◽  
Noor Faizul Hadry, N. ◽  
Norhidayah, A. ◽  
Mohd Shukri, M. A.
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Bacterial Species ◽  
Microbiology Laboratory ◽  
Airborne Pollutants ◽  
Code Of Practice ◽  
Microbial Contaminants ◽  
Respirable Particulate

Laboratory usually refers to a room or building equipped with chemicals and biological agents for scientific experimentation and research. Due to its own indoor hazards and its cause of health implications, it is an urge to assess and to understand the physical indoor air quality (IAQ) characteristics in the laboratory and the variables affecting the degree of exposure to occupants. The main objectives of this study was aimed to assess and to compare the physical IAQ characteristics and airborne pollutants including particulate matters (PM) and gaseous pollutants between laboratories, to identify microbial contaminants via bacterial counts as well as scientific bacterial-kits species identification and to correlate the relationship of physical IAQ characteristics, airborne pollutants and microbial contaminants between different laboratory settings within the same building which are Natural Product (NP) laboratory, Plant Tissue Culture (PTC) laboratory, and Microbiology laboratory. The physical IAQ characteristics and airborne PM was measured using VelociCalc multi-function ventilation meter 9565 and DustMate environmental dust detector respectively. Surface Air System Indoor Air Quality (SAS IAQ) was used to capture the microbial contaminants and after that bacterial counting and identification were done. The scientific method protocol and standard reference limits were compared based on Industrial Code of Practice on Indoor Air Quality (ICOP) (2010) regulated by the Department of Occupational Safety and Health (DOSH). The temperature of PTC laboratory, velocity of NP laboratory and Microbiology laboratory, the respirable particulate matter (PM) of all three laboratories and Colony Forming Unit (CFU) count of PTC and NP laboratory exceeded the standard limit regulated by DOSH. This study demonstrated that Gemella morbillorum is the common bacterial species available in the environment with poor IAQ and there is a significant relationship between physical characteristics, airborne pollutants and microbial contaminants between the different types of laboratory settings. In conclusion, priority should be given to NP laboratory as it is exposed to poor IAQ conditions and immediate action should be taken to eliminate the problems.

scholarly journals A Systematic Review of Air Quality Sensors, Guidelines, and Measurement Studies for Indoor Air Quality Management

2020 ◽  
Vol 12 (21) ◽  
pp. 9045 ◽  
Author(s):  
He Zhang ◽  
Ravi Srinivasan
Keyword(s):  
Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Ambient Air ◽  
Ambient Air Quality ◽  
Quality Guidelines ◽  
Safety And Health ◽  
Guidelines And Standards ◽  
Air Quality Guidelines ◽  
Ambient Air Quality Standards

The existence of indoor air pollutants—such as ozone, carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen dioxide, particulate matter, and total volatile organic compounds—is evidently a critical issue for human health. Over the past decade, various international agencies have continually refined and updated the quantitative air quality guidelines and standards in order to meet the requirements for indoor air quality management. This paper first provides a systematic review of the existing air quality guidelines and standards implemented by different agencies, which include the Ambient Air Quality Standards (NAAQS); the World Health Organization (WHO); the Occupational Safety and Health Administration (OSHA); the American Conference of Governmental Industrial Hygienists (ACGIH); the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE); the National Institute for Occupational Safety and Health (NIOSH); and the California ambient air quality standards (CAAQS). It then adds to this by providing a state-of-art review of the existing low-cost air quality sensor (LCAQS) technologies, and analyzes the corresponding specifications, such as the typical detection range, measurement tolerance or repeatability, data resolution, response time, supply current, and market price. Finally, it briefly reviews a sequence (array) of field measurement studies, which focuses on the technical measurement characteristics and their data analysis approaches.

INDOOR MICROBIAL CONTAMINATION AND ITS RELATION TO PHYSICAL INDOOR AIR QUALITY CHARACTERISTICS AT SELECTED LIBRARIES IN PAHANG

2015 ◽  
Vol 77 (24) ◽  
Author(s):  
Hizrri, A. ◽  
Khadijah, H. ◽  
Noor Faizul Hadry, N. ◽  
Norhidayah, A. ◽  
Mohd Shukri, M. A.
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Occupational Safety ◽  
Microbial Contamination ◽  
Dominant Type ◽  
Airborne Pollutants ◽  
Airborne Microbes ◽  
Biological Reaction ◽  
Relationship Of

Library contains huge collection of books that can undergo biodeterioration process after period of time. Due to this  biological reaction, the existence of airborne particulate matters and microbes in the air of the library can be disturbed and elevated, thus can cause health implications to occupants. Therefore, it is an urge to assess and understand the correlation between physical indoor air quality (IAQ) characteristics, airborne pollutants and microbial contaminants in different library settings and locations. This study was carried out at three different libraries, which are Library A (Gambang as suburban area), Library B (Kuantan as urban area) and Library C (Pekan as rural area). The physical IAQ characteristics and particulate matter (PM) monitoring were assessed by using IAQ Meter and DustMate respectively. Surface Air System IAQ (SAS IAQ) was used to collect the airborne microbes. The microbial contamination was further assessed and identified in the laboratory by using API 20E and API 20 Strep while SPSS was used to analyze the relationship of physical IAQ characteristics, airborne pollutants and airborne microbes contaminants. The scientific method protocol and standard reference limits were compared based on Industrial Code of Practise on Indoor Air Quality, 2010 (ICOP, 2010) regulated by the Department of Occupational Safety and Health (DOSH). Respirable PM in Library A and CFU counts in Library A and C exceeded the standard limit with the value of 0.30 mg/m3, 2744 CFU/m3 and 1833 CFU/m3 respectively. Significant differences (p <0.05) between the selected libraries were observed among relative humidity (p=0.001), inhalable PM (p=0.001), thoracic PM (p=0.001), respirable PM (p=0.01), CO2 reading (p=0.001) and CFU counts (p=0.01). This study demonstrated Library C has poor air quality as the reading for CO2 and CFU counts are very high compared with the other two libraries. The bacterial identification findings indicated that Gram positive bacteria were abundant compared to Gram negative bacteria. Aerococcus viridans is the most dominant type of bacteria isolated in all the libraries.

Ambient Air Quality in the Vicinity of a Herder Mediated In-Situ Burn Field Test in Alaska

2017 ◽  
Vol 2017 (1) ◽  
pp. 2017149
Author(s):  
Patrik Sartz ◽  
Srijan Aggarwal
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Occupational Safety ◽  
Ambient Air ◽  
Occupational Safety And Health ◽  
Ambient Air Quality ◽  
Exposure Limits ◽  
Smoke Plume ◽  
Safety And Health

In-situ burning (ISB) is an efficient and important response tool in a wide range of conditions from open water and very open drift ice (herders) to consolidated ice (self-contained). Herding agents provide a means to thicken and then burn uncontained slicks that would otherwise be too thin to ignite. In this project we assessed the impacts on ambient air quality in the vicinity of the location following ISB tests on crude oil herded and ignited from the air in a large purpose built test pond outside of Fairbanks Alaska. We measured downwind and in-the-smoke-plume, concentrations of respirable particulate matter sizes (PM2.5) and seven different combustion gases (CO, CO2, NO, NO2, NOx, SO2, & VOCs) during five ISB tests, with sampling instruments placed 6–12 m away from the source area. It was also investigated if the herding agent was detectable in the air borne plume. Although in this study we did not use instrument and methods specifically approved by the Occupational Safety and Health Administration (OSHA) and the National Institute for Occupational Safety and Health (NIOSH), to provide a context the study results were compared with exposure limits provided by these agencies. From our results downwind, in the smoke plume, concentrations of particulate matter and SO2 were found to significantly exceed (P &lt;0.01) NIOSH and OSHA exposure limits, while the remaining compounds measured were significantly below (P &lt;0.01) established NIOSH and OSHA exposure limits. In addition, GC/MS Analysis of aerosol samples collected utilizing a flow meter and carbon sorbent tubes in the smoke plume, the silicone based functional group of the applied OP-40 herding agent was not detected in the collected samples. The concentrations measured in this study in the vicinity of the ISB site, lasted for less than ten minutes, before drifting downwind and becoming greatly diluted. These results provide information which might be helpful towards developing guidelines for worker safety in spill response situations.

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