1 clean steam – the basics presenters: -marie lafrance, -george godfrey,
TRANSCRIPT
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Clean Steam – The Basics
Presenters: -Marie LaFrance,-George Godfrey,
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Clean Steam – The Basics
Objectives:
• What is Currently Driving Clean Steam Initiatives in Healthcare
• How Water Quality Effects the Steam Generation Process
• Define the Different Types of Generated Steam Available
• Describe the advantages and disadvantages of Clean Steam
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What’s In it for Me?
• Provides you the basic Knowledge related to the clean steam story
• Prepares you for additional training at the upcoming Sales Meeting in Tampa, Fl.
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Healthcare and the Need for Clean Steam
• Traditionally used in Life Science and Pharmaceutical application
• Newer Technology to Healthcare, but not for Life Sciences
• Europe has adopted standards specific to clean steam– EN 285– HTM 2031
• International Standards– ISO 17655
• Competitors has been an advocate for Clean Steam in Healthcare sterilizers
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Establishing Water Quality
• Waters basic structure is H20 – But additional elements may exist
– Metals (K, Al, Cu, Na, Fe, Zn)
– pH Factors (Carbonate, Hydroxide, Bicarbonate)
– Hardness (Calcium and Magnesium)
• If not monitored or treated properly can have a direct impact on the steam process
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Establishing Water Quality
• Potable water quality is highly variable across the country, even in locations that are in close proximity
• STERIS TSSR water analysis program can assist in determining Customer’s water quality issues
• As it relates to the water used in generating steam, the Customer has options.
• Those options are directly aligned with the type of steam the hospital chooses to produce
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Water Quality - Steam Generation
• Water used in steam production is known as “Feed Water”
• The type and quality of the feed water used is determine by the type of steam the Customer requires.
Water Softener System Water Softener System
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Softened Water
• Controls water hardness with earth alkaline metals Ca, Mg, content in the feed water
• Hardness in a water supply can result in “scale formation,” which is a deposit of minerals left after evaporation
• The softener contains the treated ion exchange resin - small beads of polystyrene
– Exchange removes Ca and Mg from water
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DI and RO – Purified Water
Deionized (DI) Water
-Physical process using ion exchange resin
-Traps specifically charged ions such as:
-Na, Ca, Fe, Cu, Cl, Chloride and Bromide
Reverse Osmosis (RO) Water
-Liquid Filtrations method
-Water forced through membrane at high pressure
-Pore size of membrane limits specific elements from passing
DI System with Water Softener
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Application to Healthcare Steam Sterilization Types
• Softened water can be used in both plant steam and clean steam applications
• RO or DI water can be used in clean steam applications, but piping and components must be stainless steel due to the corrosive nature of the treatment
• Let’s take a look at each of the steam methods offered in greater detail
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So what is steam?
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Steam is just steam…right??
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Types of Steam
Pharmaceuticals and Biotechnology
Life Sciences, Hospitals,
Food and Beverage
Hospitals / Food and Beverage
Hospitals, Laundries,
Food and Beverage,
Pulp and Paper
Petrochemicals
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• Most common grade of steam used in U.S. healthcare
• Sometimes referred to as “House” steam
• Can be used for multiple applications including sterilization, laundry and heating.
• Can use softened feed water to decrease water hardness
• Boiler water is chemically treated to control pH levels
Plant Steam
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What does the Plant Steam System Look Like?
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BoilerBoiler
WaterTreatment System
SterilizerSterilizer
traptrap traptraptraptrap
PressureRegulator
Tee fitting Incoming City Water
Typical Plant Steam System
Chemical Boiler Treatment
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• Must be clean dry and free of boiler carryover
• “Dirty” or wet steam may effect plant steam performance and increase maintenance costs
• What are the effects of dirty steam?
Plant Steam
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Steam Quality
Effects of Generating Poor quality steam includes:
• Scale
• Rust
• Spotting/Staining
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Poor Steam Quality - Scale
Scale in Chamber
• Poor quality steam
• Boiler water carryover
• Inadequate boiler treatment
• If steam is from a steam generator then the proper water quality is not being used
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Poor Steam Quality - Scale
Scale in Boilers
• Insufficient boiler treatment– Scale buildup
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Poor Steam Quality - ScaleDeposits/Corrosion in Autoclave
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Poor Steam Quality – Rust
Boiler Lines
• Carryover from steam
• Insufficient boiler treatment
• Poor quality steam– Insufficient use of
neutralizing amines
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Wrapped Goods – Spotting/Staining
• Laundry residues• Boiler carryover
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Why bother with steam issues?
• Spotting, staining and corrosion
can interfere with sterilizer operation
• Competitors are pushing the use of clean steam
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What Other Types of Steam are Available?
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Clean Steam• Can be generated from
potable, softened, RO or DI water
• Free of boiler additives
• Most cases use a small steam generator dedicated to boiler
• All pipes and process components are copper/brass?
• If RO/DI feed water used plumbing must be stainless due to corrosive properties of treatment
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Clean Steam Advantages/Disadvantages
Advantages:
• Preservation of instruments, less staining and pitting
• Leaves fewer deposits on sterilizer walls
Disadvantages
• High cost to produce• Corrosive – requires stainless
piping for sterilizer
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Summary/Conclusion
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FAQ’s