NOSOCOMIAL - NHS Wales aire Part 2.pdf · Pre Steril-Aire Post Steril-Aire Pre Steril-Aire Post...

NOSOCOMIAL HOSPITALS

U.S. Department of Health and

Human Services Centers for Disease Control and Prevention (CDC)

c. Ultraviolet Germicidal Irradiation (UVGI)

As a supplemental air-cleaning measure, UVGI is effective in

reducing the transmission of airborne bacterial and viral

infections in hospitals, military housing, and classrooms, but it

has only a minimal inactivating effect on fungal spores.223–228

UVGI is also used in air handling units to prevent or limit the

growth of vegetative bacteria and fungi. Most commercially

available UV lamps used for germicidal purposes are low-

pressure mercury vapor lamps that emit radiant energy

predominantly at a wave-length of 253.7 nm.229, 230

Bacterial inactivation studies using BCG

mycobacteria and Serratia marcescens have

estimated the effect of UVGI as equivalent to

10 ACH–39 ACH.235, 236

Women & Children’s Hospital of

Buffalo (WCHOB) Neonatal Intensive Care Unit

Ventilator Associated Pneumonia

Highest at Risk Patient

Infants < 30 Weeks Gestational Age

Ventilator Support > 2 weeks

Span of study – 2.5 years

Presented at Society of Healthcare

Epidemiologists of America 2007 Conference

Presented at Pediatric Academic Society

2007 Conference

BABY IN HOSPITAL

NOSOCOMIAL

REDUCTIONS

Theatre 1 AHU 4.12 Surface Samples:

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Surface samples taken at Cooling Coil

Surface samples taken at Drain Pan




QuickTime™ and a decompressor

are needed to see this picture.

Surface samples taken at Supply Duct SD

Surface samples taken at Supply Duct TS


Theatre Supply Register surface sample being collected




Surface samples taken at Theatre Supply Register SD

Surface samples taken at Theatre Supply Register TS

Theatre 1 Air Samples:

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Samples taken in supply duct Samples taken below Theatre supply register

Samples taken with Air Sampler on Theatre table

Note: All split plate photos taken with TS agar on left





Surface samples taken at the Cooling Coil

Surface samples taken at the Drain Pan


Post HEPA air sample being collected




Note: Steril-Aire Emitters on Theatre 4 AHU were operating at only 50% of design output due to a fault.




Operating Table air sample being collected

FLORIDA HOSPITAL

• 20% REDUCTION IN ENERGY COSTS

• REDUCED MAINTENANCE COSTS

• 40% REDUCTION IN NOSOCOMIAL INFECTIONS

RIDS ( Remedial in-Room Decontamination System)

DE Emitters recessed

ITALIAN HOSPITAL

Laboratory of Biological Agents

ISPESL Occupational Hygiene Department

“The results demonstrate the efficacy of the UVC emitter

in inactivating the spores”

Show First Page of ISPEL

Article

ITALY - DEPT. OF LABOR

PIC of Human Sneezing

Pandemic Protection

Plague Europe

Flu Pandemic 1918

Avian Flu

BIRD FLU

• Update Avian Flu

UVC Could Cut the spread of

Tuberculosis by 70%

Solutions

• Add surgical masks

• Infrared temperature readers.

Thermometer Machine reader at airport

Solutions

Recycling condensate for grey water

Water Case study

DELAWARE BIOTECH CASE STUDY

We also had our main competitors lamps tested against our Emitters.by an independent consultant

His numbers show that based on a microwatts per inch of glass measured from 1 meter our Emitters put out

about 8.5 to 9 microwatts at 50degrees F per second

The competition averaged about 1.5 to 1.8 microwatts per second

These are similar ratios to the Homeland Security chart

U.S. INDEPENDENT TESTS

To counter this, the competition say that our Emitters have too much power and the power is not necessary.

TOO MUCH

POWER?

U.S. INDEPENDENT TESTS

ASHRAE_Handbook

ASHRAE AIRBORNE

LEEDS UNIVERSITY

• The Importance of Bioaerosols in Hospital Infections and

the Potential for Control using Germicidal Ultraviolet

Irradiation.

• The importance of bioaerosols on hospital infections.

Humans can fall prey to a whole range of viral and bacterial

diseases such as measles and tuberculosis which are

transmitted via the airborne route from one infectious individual

to another susceptible victim. Infectious aerosols tend to be

extremely small (< 5μm) and can therefore remain suspended

and viable in the air stream over long periods of time. As a result

the risk of airborne infection in high-risk locations (hospitals and

clinics) and confined spaces (trains and aeroplanes) is

extremely high.

L.A. Fletcher*, C.J. Noakes, C.B. Beggs and P.A. Sleigh Aerobiology Research Group, School of Civil Engineering, University of Leeds,

LS2 9JT,

* Vice Chair of the IUVA Topical Group on UV Air Treatment,

GREEN BUILDINGS

• Most do not have a clear sense of the significant health risks

of indoor pollution

• The EPA says that poor IAQ ranks among the top Environmental risks

to public health

Patent

UVC ATMOSPHERE

FILTERING

UVC and Glass non-

penetration

UVC vs Xrays

ULTRAVIOLET “C” BAND

Penetration Upper no rays

Penetration Upper View1

Penetration if vertical 2

Existing Coil

12”

12”

12”

62”

24”

New Coil

15”

15” 15”

62”

30”

9”

9”

9”

9”

9”

80”

62”

42”

18”

36”

9”

36”

DE Framing Kit

SE Installation

Summary : Recap of main

points in list

No more manual cleaning of coil & drain pans

Returns coil capacity to “as-built”

Provides “Conditioned-air”

Removes MOLD, BACTERIA & VIRUSES

Reduces absenteeism & increases productivity

Reduces Hospital Infections and costs

Saves maintenance, labor & material costs

Reduces Mold in ducts

Significant energy cost savings of 10 - 20%

Increases the life of the coil

Increases the life of the HEPA filters

SUMMARY

NOSOCOMIAL - NHS Wales aire Part 2.pdf · Pre Steril-Aire Post Steril-Aire Pre Steril-Aire Post...

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