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Question:

When transporting cylinders containing used refrigerant, the DOT requires that you _____.

A attach DOT classification tags.
explanation

When transporting cylinders containing used refrigerant, the DOT requires that you attach DOT classification tags.

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Related Questions

Asphyxia is the phenomenon in which a _______ in the blood is caused by respiratory interference.

Lack of oxygen

Refrigerants generally have high molecular weight compared to oxygen. When refrigerant is leaked from the system, it may replace oxygen in closed rooms. A lack of oxygen might lead to headaches, unconsciousness and even death.

According to ASHRAE’s 1992 refrigerant safety classification, which of the following designations would be the safest?

A-1

Each ASHRAE safety classification contains two parts: The letter designation (A or B) indicates toxicity, and the number designation (1 thru 3) indicates flammability. So an A-1 classification indicates the lowest toxicity and no flame propagation.
A-1 = Lower toxicity / No flame propagation
A-2 = Lower toxicity / Lower flammability
A-3 = Lower toxicity / Higher flammability
B-1 = Higher toxicity / No flame propagation
B-2 = Higher toxicity / Lower flammability
B-3 = Higher toxicity / Higher flammability

Ozone helps in maintaining stable earth temperature.

True

Stratospheric ozone absorbs the harmful UV radiation from the sun and prevent it from reaching lower levels of the atmosphere. Depletion in ozone layer results in UV radiation reaching earth’s surface, causing crop loss & deforestation.

Hygroscopic oil has a high affinity for water.

True

Hygroscopic oil has a high affinity towards water/moisture. At higher temperature, water content in the refrigeration oil and refrigerant reacts, forming acids which can damage the refrigeration system equipment. Synthetic oils, Polyalkylene glycol (PAG), and Polyolester (POE) are highly hygroscopic and readily absorb moisture/water. Greater care should be taken while handling these refrigeration oils so that very minimum exposure is made to the atmosphere.

Never overfill refrigerant storage cylinders because _____.

the internal pressure of the cylinders may rise in heated areas and cause an explosion.

Never overfill refrigerant storage cylinders because the internal pressure of the cylinders may rise in heated areas and cause an explosion.

Which of the following human health effects could result from an increase in ultraviolet radiation?

An increase in eye cataracts cases.

The increase in ultraviolet radiation could cause an increase in the number of eye cataracts cases.

As per the Montreal Protocol, CFC’s were phased out of production on _____.

December 31, 1995

When virgin supplies of CFCs are depleted, future supplies are from recycled, recovered and reclaimed refrigerants.

What has the least ozone depletion potential?

Class II refrigerant

Class I refrigerant – Ozone Depletion Potential greater than 0.2 (ex: CFC)
Class II refrigerant – Ozone Depletion Potential less than 0.2 (ex: HCFC)

Equipment covered by EPA regulations include ____.

all air-conditioning and refrigeration equipment using CFC, HCFC, or HFC refrigerants.

Equipment covered by EPA regulations include all air-conditioning and refrigeration equipment using CFC, HCFC, or HFC refrigerants.

The rise in the amount of Chlorine measured in the stratosphere over the past two decades matches the rise in the amount of _______.

Fluorine

CFCs & HCFCs molecules contain Chlorine & Fluorine atoms. When these interact with Sun’s UV radiation, chlorine ion is separated from the CFC or HCFC molecule. Therefore, the amount of chlorine formed can be determined by the presence of fluorine in the Stratosphere.

Which of the following refrigerant releases is a violation of the EPA prohibition on venting?

Release of mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully charged appliance while leak-checking that appliance.

The lower the ambient temperature is, the ____ the recovery rate will be.

slower

Generally, faster recovery is achieved with warmer system and colder recovery tank. The warmer the system is, the denser the refrigerant vapor will be and compressor in the recovery system can able to evacuate more refrigerant per minute. Conversely, lower ambient temperature results in slower recovery process.

The EPA can require a technician to demonstrate the abilities to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can result in _______.

revocation of the technicians certification.

The EPA can require a technician to demonstrate the abilities to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can result in revocation of the technician's certification.

When using any cleaner, solvent, chemical, or refrigerant, you should review _____.

the material safety data sheets.

When using any cleaner, solvent, chemical, or refrigerant, you should review the material safety data sheets.

Recovery cylinders are not specifically designed to be refilled.

False

Disposable Cylinders are used with Virgin or Reclaimed Refrigerants.