When are solvents considered hazardous waste?
Many common solvents may be hazardous wastes when they are spent, or can no longer be used. Also, many commercial chemical products are solvents and are considered a hazardous waste if they are unused when discarded. (See Section 6.B. Scope of P- and U-listings.) Under the
What is an example of a solvent?
2 A solvent may contain either organic or inorganic chemicals. Organic solvents always contain the element carbon while inorganic solvents do not. The most common solvent, water, is an example of an inorganic solvent.
What happens if EPA regulations change after a technician becomes certified?
Should EPA regulations change after a technician becomes certified, it is the responsibility of the technician to comply with any future changes. The EPA also reserves the right to modify the test questions and or call for a new certification based on advancements in future technology.
What should a technician use to determine a safe pressure for leak testing?
When leak checking a system, NEVER pressurize the system with oxygen or compressed air. When mixed with refrigerants, oxygen or compressed air can cause an explosion. To determine the safe pressure for leak testing, check the data plate for the low-side test pressure value.
What effects will low ambient temperatures have on recovery?
The lower temperature of the cylinder reduces the pressure of the refrigerant inside it. Conversely, if the system from which you are removing refrigerant is at a low ambient temperature, the recovery process will be slower.
Which of the following leak detection methods is considered to be the most effective for locating the general area of a small leak?
The most effective methods for locating the general area of a small leak are: Ultrasonic leak detectors, and. Electronic leak detectors.
How can we conserve refrigerant when servicing an appliance?
Now, more than ever, focusing on ways to conserve refrigerant should be at the forefront of those servicing R-22 units.Stop Topping Off Leaks. Use a dye kit or leak detector to find the leak and repair it. ... Recover and Reuse Refrigerant When You Can. ... Use Your Chosen Refrigerant Properly.
What should the technician review when working with any solvent chemicals or refrigerant?
Whenever working with any solvents, chemicals and refrigerants, the technician should review; material safety data sheets.
What standards must refrigerant recovery equipment meet?
What standards must refrigerant recovery equipment meet and what component must all Type I and Type II refrigeration systems have? All refrigerant recovery equipment must be certified and labeled as EPA approved. Type I and II refrigeration systems must have a service aperture or a process stub.
What are the two most common leak detection tests?
The most commonly used leak test methods are underwater bubble test, bubble soap paint, pressure and vacuum decay, and tracer gas detectors (halogen, helium and hydrogen).
What are the 2 methods of refrigerant leak detection?
Refrigerant leak detection methods include, but are not limited to: soap bubble method; fluorescent dye method; or. electronic leak detection method.
What are four ways of determining a refrigerant leak?
Here are a few ways HVAC professionals might identify leaks in your system.Soap bubbles. Soapy water applied to the suspected refrigerant leak will bubble up and give the location away.Ultraviolet (UV) dye. Dye is added to the refrigerant, and a special UV light is used to find leaks. ... Electronic leak detectors.
Which of the following are recommended safe work practices when recovering refrigerants?
25 Cards in this SetWhich of the following are recommended safe work practices when recovering refrigerants?Wear safety eyewear and butyl-lined gloves when connecting/disconnecting hosesBefore beginning a refrigerant recovery procedure, it is ALWAYS necessary to;Know the type of refrigerant that is in the system.23 more rows
How would you remove moisture from refrigerant in a system?
Moisture can be removed from a refrigeration system by applying a vacuum.
Which recovery equipment maintenance practice should be performed on a regular basis?
which of the following recovery equipment maintenance practice(s) should be performed on a regular basis? Check vacuum pump for any leaks, check recovery device for refrigerant leaks, and check amperage draw of recovery device.
Which leak detector is the most accurate and is used on systems with extremely small r 22 refrigerant leaks?
Best Overall The Inficon TEK-Mate is one of the most unique electrochemical sensors that can detect all types of refrigerants, including R22, R32, R507, CFCs, HFCs, and their blends.
What are the methods are adopted for leakage monitoring?
Pipeline leak detection is used to determine if and in some cases where a leak has occurred in systems which contain liquids and gases. Methods of detection include hydrostatic testing, infrared, and laser technology after pipeline erection and leak detection during service.
What is the easiest way to determine the leakages in a vacuum line?
One of the most accurate methods of vacuum leak detection is the helium leak detector. A sensor is usually placed near the inlet to the vacuum pump to detect any increase in helium concentration in the air stream. Helium is then sprayed on any potential leak points in the system or piping.
What is a leak detection test?
Leak testing is a procedure that inspectors use to determine whether an object or system is functioning within a specific leak limit. Leaks occur when there is a defect—a hole, crack, or some other kind of flaw—in an object, allowing whatever the liquid or gas it is holding to flow out.
What substances are used in comfort cooling?
Only ozone-depleteing substances used in comfort cooling.
Can you reclaim a mixture?
The mixture may be impossible to reclaim.
What does EPA require of refrigeration technicians?
EPA may require technicians to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate or failure to properly use the equipment may result in:
What is the maximum pressure required to be tested for refrigerant?
Reusable containers for refrigerants that are under high pressure (above 15 PSIG) at normal ambient temperature must be hydrostatically tested and date stamped every:
What is the purpose of flushing with liquid refrigerant?
Flushing with liquid refrigerant to clean field tubing.
You're judged ALL the time
It's hit or miss day to day. The HEAD manager is pretty cool. The Owner? Pretty cool. Lower management? No... When the HEAD manager is around? Things get done the right way. When LOWER management gets done? You're struggling, but it goes with the territory. They thrive more on time there than production-vs-"liability".
Good company
Got let go after my 89th day after not missing a day. They paid well above average rate. Dangerous work and you are exposed to the weather year round.
Great place to work
Normal 8 hour day. Some days very busy and some slow. Always something new to learn. Working with Chemicals, it a new challenge every time you have to make a new blend. The people are great to work with. Would recommend for sure.
Productive and professional work place
Great place to work... did activities with employees to keep and grow a bond ..managers were good people. Coworkers were good people it was like a family atmosphere
good place to learn abought chemicals and fast paced production
Fast paced work invironment with a busy work load. I learned the value of temwork and multi tasking.Strong poepllle skill a must! The hardest part of the job is prioritizing work assignment to meet daily production needs.The most enjoyable part of the job is always working on new projects, meeting new people and good pay
Not great
The job is mostly outside and the pay is decent but you handle dangerous chemicals makeing the amount of money hardly worth the risk and constant over time.
productive company
very bad management. all about numbers. don't take care of emploees. revolving door for hourly and management. forced overtime. Didn't work weekends was the only plus about company.
What type of technician is used to repair high pressure appliances?
Technicians maintaining, servicing, repairing or disposing of high pressure or very high-pressure appliances, except small appliances and motor vehicle air conditioning systems, must be certified as a Type II Technician or a Universal Technician.
What is the EPA's concern with refrigerant venting?
The EPA is not only concerned with the prevention of refrigerant venting, but is also concerned with the technicians overall safety. When handling and filling refrigerant cylinders, or operating recovery or recycling equipment, you should wear safety glasses, protective gloves, and follow all equipment manufacturers safety precautions.
How much refrigerant can be removed from a 1993 ARI 740?
Recovery equipment manufactured before November 15, 1993 must be capable of removing 80% of the refrigerant, whether or not the compressor is operating, or achieve 4 inch vacuum under the conditions of ARI 740.
When did refrigerant recovery equipment become EPA approved?
Refrigerant Recovery and/or Recycling equipment manufactured after November 15, 1993 , must be certified and labeled by an EPA approved equipment testing organization to meet EPA standards. There are two basic types of recovery devices.
What refrigerant is used in split air conditioning?
For many years, the most common refrigerant used in residential split air conditioning systems was R-22, but with the current changes in the industry, read the nameplate to determine the type of refrigerant used.