Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/221111
Title: INDOOR AIR QUALITY AUDIT IN CAR AUTO WORKSHOPS IN SINGAPORE
Authors: NUR HAFIZAH BINTE RAHMAT
Keywords: Building
PFM
Project and Facilities Management
2018/2019 PFM
IAQ
Car auto workshops
Indoor Air Quality
Chandra Sekhar
Issue Date: 29-May-2019
Citation: NUR HAFIZAH BINTE RAHMAT (2019-05-29). INDOOR AIR QUALITY AUDIT IN CAR AUTO WORKSHOPS IN SINGAPORE. ScholarBank@NUS Repository.
Abstract: With the increasing number of cars on the roads and a parallel increase in the car population age as an indirect result of high Certificate of Entitlement (COE) prices, business for auto car workshops have been improving. Workshop employees are exposed to pollutants for long hours, jeopardizing their health and well-being. It is thus important to study the indoor air quality (IAQ) and thermal comfort levels in car workshops to determine the extent of their exposure. The aims of this study are to evaluate and compare the pollutant and thermal comfort levels when different major activities are ongoing in the workshop, and reference them to stipulated guidelines. Existing measures to manage the IAQ will also be studied to evaluate its effectiveness. The following hypotheses are to be tested: that certain servicing activities give rise to poorer IAQ levels and that existing means of managing IAQ are inadequate. The research methodology comprises of literature review on related topics as well as objective measurements. 4 naturally-ventilated workshops were selected, each specializing in one service, namely tyre replacement, welding, spray-painting and general mechanical servicing. Spot measurements were taken in each unit and readings were compared to ASHRAE 55: 2017 and plotted onto the CBE Thermal Comfort Tool to determine the acceptability of thermal comfort through obtaining the Predicted Mean Vote (PMV) and Predicted Percentage Dissatisfied (PPD) levels. Pollutant levels are similarly contrasted to existing international guidelines. Findings showed that thermal comfort when all 4 servicing activities were carried out were unacceptable. A comparison across the 4 activities showed welding to be the most harmful, emitting significant levels of particulate matter, and spray-painting following closely behind. This study is limited in the scope of pollutants measured, the lack of continuous measurement and the absence of occupant surveys to assess the perceived level of thermal comfort in contrast with the actual.
URI: https://scholarbank.nus.edu.sg/handle/10635/221111
Appears in Collections:Bachelor's Theses

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