Development of Indoor Air Quality (IAQ) Standard for Extended Work Shifts in the Royal Malaysian Navy (RMN) Ships

The RMN IAQ standard for naval ships is proposed. Occupational Safety and Health (Use and Standard of Exposure Chemicals Hazardous to Health Regulations 2000 (USECHH 2000) and Malaysian Industry Code of Practice on Indoor Air Quality 2010 (ICOP IAQ 2010) were selected as the reference standards to adjust the acceptable limits. The extended work shifts adjustment for 12-hour working duration were achieved using Brief and Scala model and Quebec model. The development of the adjusted IAQ standard was supported by in-depth interviews with four experts. Next, compliance analysis of IAQ parameters was performed to evaluate the suitability of the RMN IAQ standard. The compliance analysis on “Ship Alpha” found that RH, CHOH, CO, CO2, NO2, PM2.5, and PM10 complied with the RMN IAQ standard, excluding temperature (electrical room and wardroom) and TVOC (bridge, wardroom and cabin).