Localized Electrostatic Precipitation as an Alternative to Exhaust Ventilation for Controlling Airborne Dust in Textile Workplaces

1988 ◽  
Vol 58 (11) ◽  
pp. 619-625 ◽  
Author(s):  
A. M. Johnston ◽  
G. W. Hughson ◽  
J. H. Vincent ◽  
A. D. Jones
Keyword(s):  
Pilot Trial ◽  
Cost Effective ◽  
Dust Control ◽  
Experimental Chamber ◽  
Electrostatic Precipitation ◽  
Airborne Dust ◽  
Local Exhaust Ventilation ◽  
Exhaust Ventilation ◽  
Control Cabinet ◽  
Textile Factory

We report the results of a series of investigations to assess the possible use of localized electrostatic precipitation as a practical, cost-effective alternative to local exhaust ventilation for control of airborne dust levels in the workplace. A brief summary is given of work in the laboratory using both an experimental chamber and a dust control cabinet fitted to a textile winding rig. These studies have been extended to include a pilot trial on an open-bed spinning frame in an asbestos textile factory. A detailed account of the procedures and results of this latter study is given. The possible advantages of electrostatically based systems in terms of cost-efficiency are considered against possible disadvantages associated with operational accessibility.

Development of an Integrated Dust Collector and Local Exhaust Ventilation System for Controlling Industrial Mine Dust

2013 ◽  
Vol 824 ◽  
pp. 217-224
Author(s):  
E.O. Ifelola ◽  
D.J. Afu
Keyword(s):  
Material Selection ◽  
Ventilation System ◽  
Dust Control ◽  
Dust Collector ◽  
Cleaning Efficiency ◽  
Successful Operation ◽  
Airborne Dust ◽  
Local Exhaust Ventilation ◽  
Mine Environment ◽  
Fan Speed

Dust control in an enclosed mine environment is a fundamental key to personnel safety for boosting personnel productivity and enhancing successful operation, hence the need to design a dust control equipment to meet this crucial requirement. A laboratory-scale local exhaust ventilating system for the control of airborne dust in an enclosed mine environment was designed and fabricated. The design was carried out by considering various design criteria required for a well-ventilated enclosed mine environment. Material selection of the components was done by taking into cognisance the physical characteristics of the targeted dust. The system designed was fabricated and then test-ran with dry dust laden air stream in order to determine its cleaning efficiency with respect to variation in fan speed and dust grain size. It was observed that the cleaning efficiency of the machine was high at a higher fan speed and low grain sizes. The cleaning efficiency ranged from (63.9-44.0)% for dust particle sizes ranging from (62.5-125) to (1000-2000) μm with a mean fan suction of 0.958Pa. Thus, with this system, improved cleaning of dry dust-laden enclosed mine workplace could be achieved with increased rate of suction of smaller particle-sized dust.

Are oestrous feral pigs, Sus scrofa, useful as trapping lures?

2005 ◽  
Vol 32 (7) ◽  
pp. 605 ◽  
Author(s):  
J. C. McIlroy ◽  
E. J. Gifford
Keyword(s):  
Sus Scrofa ◽  
National Park ◽  
Pilot Trial ◽  
Control Program ◽  
Cost Effective ◽  
General Technique ◽  
Feral Pigs

Eight feral pigs (two boars, four sows and two piglets) were caught in traps using oestrous sows as lures during a control program on a remnant pig population in part of Namadgi National Park during spring, 1990. The program was mostly based on aerial baiting with warfarin. No pigs were caught in traps containing anoestrous sows or in traps containing bait only. Seven unmarked pigs (caught seven days after the cessation of baiting) did not appear to have eaten any warfarin bait. In an earlier pilot trial, two boars were caught at a trap containing an oestrous sow, one of these again in a trap baited only with fermented grain, but no pigs were caught at a trap containing an anoestrous sow. Although not cost-effective as a general technique, this method could be useful in specific circumstances, such as eradication campaigns on islands, if the last few pigs are, or have become bait shy, or are impossible to cull by other methods.

A community-based approach to evaluation of health outcomes and costs for telepsychiatry in a rural population: Preliminary results

2000 ◽  
Vol 6 (1_suppl) ◽  
pp. 155-157 ◽  
Author(s):  
Craig Kennedy ◽  
Peter Yellowlees
Keyword(s):  
Mental Health ◽  
Health Outcomes ◽  
Rural Areas ◽  
Pilot Trial ◽  
Public Mental Health ◽  
Cost Effective ◽  
Community Based ◽  
Public And Private ◽  
Preliminary Results ◽  
The People

A pilot trial was established to support visiting psychiatric services and local public and private practitioners through the use of videoconferencing. The purpose of the trial was to determine whether people in the community received better health-care with telemedicine. A community-based approach was used to evaluate health outcomes, costs, utilization, accessibility, quality and needs for such services in a rural community in Queensland. Over a two-year period data were collected from 124 subjects who met the criteria of having a mental health problem or mental disorder. Nine further subjects refused to participate in the study. Only 32 subjects used videoconferencing to receive mental health services. Preliminary results did not show any significant improvements in wellbeing or quality of life, although the time span was relatively short. However, the results confirmed that the people were no worse off from a consumer or a practitioner perspective from using videoconferencing. Most consumers found that videoconferencing with a psychiatrist moderately or greatly helped them in managing their treatment, with 98% of them preferring to be offered videoconferencing in combination with local services. Overall, videoconferencing is a crucial part of enhancing psychiatry services in rural areas. However, it is not necessarily cost-effective for all consumers, general practitioners, psychiatrists, or the public mental health service.

scholarly journals Preliminary Study: Environmental Assessment of Perchloroethylene in Dry-Cleaning Facilities in the UAE

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Sedra Habib ◽  
Hafiz O. Ahmed ◽  
Naema Al-Muhairi ◽  
Reem Ziad
Keyword(s):  
Environmental Assessment ◽  
Personal Protective Equipment ◽  
International Agency ◽  
Protective Equipment ◽  
Dry Cleaning ◽  
Local Exhaust Ventilation ◽  
Exhaust Ventilation ◽  
Human Carcinogen ◽  
Preliminary Study ◽  
Monitoring Devices

Background. Perchloroethylene (PERC) is a widely spread cleaning solvent, used in nearly all dry-cleaning facilities. It has been declared as “probable human carcinogen” by the International Agency for Research on Cancer (IARC) due to its hazardous and toxic effects on human health. The study aimed at assessing the exposure of PERC among dry-cleaning workers at four different dry-cleaning facilities in the UAE. Methods. The four dry-cleaning facilities, using PERC in one of the cities of the UAE, were selected. Draeger perchloroethylene 10/b detector tubes along with a Draeger accuro pump were used to estimate the levels of PERC exposure in three main selected positions in each of the facilities. Results. The results showed that the second selected position had the highest amounts of PERC exposure above the international and local standards in 3 out of 4 selected facilities. The workers at position 2, who were not using any of the provided personal protective equipment, were at the highest risk of developing PERC-related health problems. Conclusion. It is important to install local exhaust ventilation systems and monitoring devices of PERC concentrations in these facilities, along with raising the awareness of workers about the health effects of PERC and the importance of using personal protective equipment (PPE) while performing their job.

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