Exam (elaborations)
EPA Certification Exam – Questions With A+ Solutions
- Course
- Institution
EPA Certification Exam – Questions With A+ Solutions
[Show more]
Content preview
EPA Certification Exam – Questions With A+ SolutionsWhen operating recycling or recovery equipment and handling recovery
cylinders wear _______ and _________ Right Ans - Bury-lined gloves , safety
glasses
The flammability and toxicity refrigerants group A Right Ans - Low toxicity
The flammability and toxicity refrigerants
Group b Right Ans - High toxicity
Hcfc-123 Right Ans - B1 high toxicity
High concentrations of refrigerant should not be inhaled since it may cause
what ? Right Ans - Heart irregularities or asphyxia
When recovering of disposable cylinders, any remaining refrigerants need to
be recovered using what ? Right Ans - A recovery machine
The container must be evacuated to at least _____ Psig Right Ans - 0
Recovery cylinders must be approved by ? Right Ans - Dot
Pressure exerted by the fluid at equilibrium at a given point within the fluid.
Right Ans - Hydrostatic pressure
Refrigerant cylinders should never be filled above _____ % Right Ans - 80
Filling limit devices vary from one machine to another , some of which include
float switches, ______________ _______ ___________, and weighing scales Right Ans
- Thermistor type sensors
Recovery cylinders should be tested at least 1 every _____. Years . Right Ans
-5
A gas that is found in both the stratosphere and troposphere is ? Right Ans
- Ozone
, Ozone is a form of oxygen gas whose molecules consist of ___ __________ _________
Right Ans - 3 oxygen atoms
Proof that chlorine atoms have reached the stratosphere can be found by ?
Right Ans - High altitude air sampling
CFC Right Ans - Chlorofluorocarbons
HCFC Right Ans - Hydrochlorofluorocarbons ( hydrogen, chlorine, fluorine,
and carbon)
Most commonly used refrigerants ? Right Ans - HCFC-123 and HCFC-22
The ability of any chemical to deplete the ozone layer is called _________ _______
_________ Right Ans - Ozone depletion potential (ODP)
_________ has 20 times the ozone depleting potential of HCFC-22 Right Ans -
CFCs
CFCs are R-___ , R-____, R-____,R-_____, R-_____, and R-______ Right Ans - R-11,
R-12, R-113, R-114, R-500 , R-502
HCFCs are R-____, R-_____ Right Ans - R-22, R-123
HFC R-____ Right Ans - R-134a
A mixture of 2 or more refrigerants where the mixture behaves like a single
new refrigerant is ? Right Ans - Azeotropes
The ODP of HFC-134a is ____ Right Ans - 0
Two types of recovery systems Right Ans - Passive and active
(System dependent) uses the internal pressure of the system or the systems
compressor to aid in the refrigerant recovery process. Right Ans - Passive
(Self contained) is the method used by the tech to remove refrigerants
through the use of certified self-contained recovery machine Right Ans -
Active
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75057 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now