The Building Engineering Services Association held a seminar to co-ordinate with National Clean Air Day in the UK. There were many great speakers on how to improve indoor air quality for compliance with standards, comfort, productivity and profitability. This was the presentation I made

1. The role of industry
guidance/best
practice
KEEPING THE CITADEL CLEAN

2. Keeping the
citadel clean
 Refuge
 Compliance
 Comfort, productivity
& wellbeing

3. Things within
our control
Filtration

4. Things within
our control
 Maintenance
SFG20

5. Things within
our control
 BESA Guide to Good
Practice TR19 “Internal
Cleanliness of
Ventilation Systems”
 Clean ductwork

6. Legislation
 Workplace Health,
Safety & Welfare
Regulations - L24 2nd
edition 2013

7. Welfare, productivity
& well-being
 Positive benefits for workers
and employers
 Small cost compared to
human resources
 Employers increasingly value
‘the talent’
 Wellbeing consultancies
springing up

8. Why worry about
ductwork cleanliness?
 Complex surfaces
 All the air in the building
must pass over/through

9. Why worry
about
ductwork
cleanliness?
 Out of sight &
out of mind

10. Ductwork
maintenance
 A dirty system
cannot supply
clean air

11. BSRIA: Ventilation System Hygiene
TN22

12. No filter is absolute
 Filters change the rate of fouling
 Slow downstream of HEPA
 Rapid downstream of a common M6-
F7 bag filters where there is a dirty
outside air challenge
 Catastrophically fast where filters fail

13. BESA TR19
 Benchmark
cleanliness
according to
cleanliness class
 British Standard EN 15780
(2013): Cleanliness of
Ventilation Systems
 Avoid subjectivity of
‘what is clean/dirty’

14. BESA TR19
 Preferred Vacuum Test
 Sensitive, accurate
 Laboratory-based
 Gold standard
 Post-clean verification
 New build

15. BESA TR19
 Deposit Thickness test
 Instant read-out
 Low cost
 Comb for circular

16. BESA TR19 &
BS EN15780

17. BESA TR19
 Re-assure stakeholders that
the citadel is safe, clean and
productive
 FM
 HR
 Employer
 Employee