A brief introduction on indoor environmental quality to keep a healthy workplace for the benefits of building occupants and employers.

1. Indoor
Environmental
Quality
KEEPING A HEALTHY WORKPLACE
INTEGRATED INDOOR ENVIRONMENTAL
TECHNOLOGIES & ENGINEERING SERVICES

2. What Could Have Happened to Your Indoor Environment
Without Regular Inspection & Maintenance?
Our Case Studies

3. Location
Case Study 01
Corporate building, Cyberjaya
Problem Statement
MVAC system never inspected & maintained
Torn insulation fiber in MVAC ducting
High particulate count
Solution
Air Ventilation Duct Remediation, Treatment
& Plan Preventive Maintenance
Post - Indoor Air Quality Assessment

4. Location
Case Study 02
Hospital, Johor Bahru
Problem Statement
MVAC system affected by fire incidence
Solution
Air Ventilation Duct Remediation, Treatment &
Plan Preventive Maintenance
Post - Indoor Air Quality Assessment
Cleanroom Performance Testing
Air Balancing
Bio-decontamination & Microbial Air Sampling

5. What Exactly Can Happen and
Why Should We Be Worried?
Our Encounters
of poor indoor environmental quality

6. Building Related
Illnesses
Influenza
Infections
Allergies
Legionnaires' disease
Cancers
Health Consequences of
Poor Indoor Environment
Sick Building
Syndrome
Breathing difficulty
Eyes, nose or skin
irritation
Nausea
Fatigue
Generally unwell

7. Indoor Environmental Quality Facts & Statistics
Indoor air is 70%
more polluted than
outdoor air
People spend up to
90% of their time
indoor
10%
90%
70%
30%
1 in 6 allergies provoked by
fungi & bacteria in air duct
The Cost of Poor Indoor Environment:
$1 Billion in medical costs
$60 billion in employee sick
leave & lost production

8. Inadequate ventilation
Contributing Factors to Poor Indoor Environmental Quality
53%
15%
10%
5%
4%
13%
Indoor pollutant sources
Entrainment of
outdoor contaminants
Microbial problem
Building fabric
contamination
Unknown
Source: US NIOSH, 1990

9. Mold Contamination

10. Sample Collected from Contaminated Supply Air Diffuser
Agar plate placed under supply air diffuser
to collect mold spores for 2 minutes
Incubated in room temperature for 5 days

11. Is There Any Reliable Guidelines for Indoor
Environmental Management for Reference?
The Guideline
for indoor environment focusing on indoor air quality

12. Department of Occupational Safety and Health
Ministry of Human Resources, Malaysia
Industrial Code of Practice
on Indoor Air Quality 2010
Acceptable exposure limits for physical, chemical &
biological parameters
Mechanism to assess & control indoor air
pollutants
Appropriate occupational safety & health measures

13. Walkthrough Inspection /
Building Diagnostic
Methodology
IAQ Monitoring & Ventilation
Performance Testing
Building Occupant Survey

14. Thermal Comfort
Air temperature
Relative humidity
Air movement
Criteria Investigated
Pollutant levels
TVOC
Formaldehyde
Respirable particulate
Carbon monoxide
Ozone
Microbial contamination
Ventilation Performance
Carbon dioxide Air flow

15. What Exactly Can Happen and
Why Should We Be Worried?
Our Encounters 2
of poorly maintained MVAC system

16. Performance issues:
Inadequate fresh air intake
Blockage of air flow
Accumulation of dust & pollutants
MVAC system is also considered a source of IAQ problems as a
result of inadequate ventilation in 53% of over 500 buildings
investigated in US.
MVAC System & Indoor Air Quality
Assessment:
AHU & ventilation ducting system
inspection
Review of maintenance record
Ventilation performance testing -
ASHRAE 62.1 (2013) Ventilation
for Acceptable IAQ

17. Condensation on Duct Insulation

18. Un-maintained MVAC System

19. Un-maintained AHU

20. Is There Any Reliable Guidelines for MVAC
System Management for Reference?
The Guidelines
for mechanical ventilation & air conditioning systems

21. NADCA The International Standard for HVAC Cleaning
Professionals
ACR The NADCA Standard
For Assessment, Cleaning,
Restoration of HVAC System
Buildings Recommended Inspection Interval
Commercial 1 year
Industrial 1 year
Healthcare 1 year

22. MVAC System Inspection
Methodology
Verification & Documentation
Cleaning & Restoration
AHU Cleaning
Coil Surface Cleaning
Air Duct Cleaning

23. Malaysian Society for Quality in Health (MSQH)
Malaysian Hospital Accreditation
Standards 2017 (5th ed.)
Aspect Recommended Inspection Interval
Indoor Air Quality 1 year
Legionella Testing 6 months
MVAC Ducting 1 year

24. What Are The Benefits & What Can We Do To Ensure
Clean And Healthy Indoor Environment?
The Conclusion

25. Increase workers' productivity
Prevent building-related illness and sick building
syndrome
Ensure a pleasant indoor environment for visitors
Enhance the asset value of building
Save maintenance and electricity cost in long run
Value-adding Outcomes
with a better indoor environmental quality

26. Conduct regular indoor environment and MVAC system inspection
Carry out immediate remediation to eradicate any pollutant source
Short term
The Way Forward
Incorporate latest technologies in monitoring and improving indoor
environmental conditions
Long term
Real life indoor environmental data monitoring
In-duct or portable air purification system

27. Thank You!
CONTACT US FOR ANY ENQUIRY:
www.enviroverks.com.my
+603-2287 0079
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