This document summarizes a presentation on managing ventilation hygiene risks according to TR/19 guidelines. It discusses the health and safety regulations regarding ventilation system maintenance and cleaning. TR/19 establishes cleanliness quality classes and recommends objective testing and inspection of new and existing systems to ensure acceptable contamination levels. It also stresses the importance of adequate access for maintenance, monitoring conditions based on the quality classes, and implementing a management system with periodic testing and record keeping to fulfill compliance duties.

1. TR/19 Second Edition
Managing Ventilation Hygiene Risks
Presented by
Gary J Nicholls Co-author TR/19

2. Speaker – Gary J Nicholls
• Managing Director of Swiftclean (UK) Ltd, trading as
Swiftclean Building Services
• Co-author of;
– TR/17 first & second editions
– TR/19 first & second editions
• Steering Group Member producing;
– FMS1 – BSRIA Ventilation Hygiene Specification &
Guidance
– RC44 – FPA Recommendations for fire risk assessment of
catering extract ventilation
– TM26 – CIBSE hygienic maintenance of office ventilation
ductwork
– BG 492013 – BSRIA commissioning air systems

3. Agenda
• What the law requires
• Key ventilation system risks – hygiene related
• What TR/19 is
• System cleanliness quality classes
• A suitable system to manage ventilation system
hygiene
• Summary

4. Key risks with poor ventilation hygiene
• Fire and the spread of fire
– Forensic fire investigators state 25%
significantly worst
• Reduces efficiency – higher energy spend
– Heat transfer and fan energy requirements
• Quality of air that we breathe
– Duct 10% of floor area

5. Regulations are Laws approved by
Parliament
• Management of Health and Safety at Work
Regulations
– duty of care on every employer to conduct a risk assessment
• Workplace (Health, Safety & Welfare) Regulations (L24
second edition 2013)
- Regulation 6 require building owners and
managers to ensure that enclosed workplaces
are ventilated with fresh and purified air
- Regulation 5 imposes a duty to clean
ventilation systems “as appropriate“ and ensure
they are subject to a suitable system of
maintenance

6. What is TR/19?
• Industry - Guide To Good Practice
• Subject - Internal Cleanliness of Ventilation Systems
• Written by Industry experts/practitioners, developed/improved over
past 23 years
• Latest version published by B&ES in July 2014
• Publishing history
– DW/TM2 1991 – guidance on protection against dust egress into ductwork
during construction
– TR/17 1998 introduced for the first time in the UK good practice guidance
testing/verification
– TR/17 Second Edition 2002 more detailed guidance for kitchen extract
systems
– TR/19 2005 – added a revised version of TM2 for
– TR/19 Second Edition 2013, incorporates philosophy of BSEN15780, new
system verification & improved kitchen extract fire safety

7. Define cleanliness quality classes
(TR/19 2013, BSEN15780, BG 2013)

8. Ensuring new ventilation system cleanliness
• Construction site dusty environment
• Chimney effect
• Affectivity of protection measures
• Dust ingress inevitability
• Miles on the clock!
• Inspect & as required test to quality class
• Pre-commission clean/test/handover

9. tree
TR/19
New
System
Decision
Tree

10. New Ventilation System
Acceptable or not?

11. Objective measurement
Dust/contamination level testing
• Deposit
Thickness
Test (DTT)
• Preferred
Vacuum
Test (PVT)

12. Commission to TR/19
Maintain to TR/19

13. A suitable system of maintenance includes
Risk Assessment to TR/19
– Adequate access?
– Monitor/test conditions based on cleanliness
quality classes

14. Failure
of
Duty

15. Adequate access?

16. Monitor/test conditions based on cleanliness
quality classes

17. Unacceptable contamination affects
Quality of air that we breath

18. Follow TR/19 guidance for suitable
ventilation hygiene control
• Cleanliness quality classes
• Adequate access for inspection/testing/cleaning
• Cleanliness of newly installed ventilation systems
• Implement a management system to control risks
with periodic inspection and testing
• Testing fire damper function
• Cleaning as appropriate
• Log book/record keeping to evidence
• A suitable system of maintenance
• Compliant duty fulfilled

19. “The Science of Compliance”