Ask Question, Ask an Expert


Ask Homework Help/Study Tips Expert


Ventilation is the extremely significant technique of diminishing the level of toxic airborne contaminants in workplace. Since it is impossible to get rid of absolutely all leakages from a process in the workplace, some technique is always required to remove toxic materials from the air in closed rooms when such materials are present in process streams.  The occupational safety and health administration (OSHA) has set the permissible exposure limit (PEL) of vinyl chloride at 1.0 ppm as a maximum time-weighted average (TWA) for an eight hour workday, since vinyl chloride is believed to be a carcinogen.  If VC escaped in the air, its concentration should be maintained at or below the PEL.


problem 1: If a process loses 0.001m3/hr of Vinyl chloride in the room air, what volumetric flow rate of air will be essential to maintain the PEL of 1.0 ppm by dilution ventilation? (In practice we should also correct for the fact that complete mixing will not be realized in room and in this case the mixing factor is supposed to be 10).

problem 2: If the safety analysis of ventilation doesn’t demonstrate a safe concentration of Vinyl chloride exists, the process may have to be moved in a hood so that no Vinyl Chloride enters the room.  If the process is performed in a hood with an opening of 30 cm wide by 25 cm high and the “face velocity” (average air velocity through the hood opening) is 10 m/s, what is the volumetric ai flow rate?

problem 3: Which techniques of treating the pollution problem seems to be the best to you? Illustrate out your answer.

problem 4: Illustrate out why dilution ventilation is not suggested for maintaining air quality?

problem 5: What might be a problem with the employ of a hood?

Homework Help/Study Tips, Others

  • Category:- Homework Help/Study Tips
  • Reference No.:- M98521

Have any Question? 

Related Questions in Homework Help/Study Tips

Deliverable length 10-12 slides including 1 reference

Deliverable Length: 10-12 slides (including 1 reference slide) Higher educational levels have been linked to higher salaries, lower poverty, and even more likelihood of getting married. Read the following article: http:/ ...

Questionread the research areas of emphasis in professional

Question: Read the "Research Areas of Emphasis in Professional Psychology" article and select a topic of psychological research discussed in the article (e.g., evidence-based treatments, veterans/active military, multicu ...

Write an essay of 750-1000 words that analyzes issues

Write an essay of 750-1,000 words that analyzes issues involving sexuality from the various positions on the political spectrum. Define political positions in relation to sexuality. Specifically discuss the issues of "tr ...

Described personal journey into the field of counseling

Described personal journey into the field of counseling. Included: First time the student considered counseling as a career, how life experiences prepared the student to become a counselor, attributes possessed that will ...

I need 150 words for each write a paper answering the below

I need 150 words for each write a paper answering the below questions on a health care entity of our choice. Our choice is laboratory services. 1. Analyze feedback from consumers on the quality improvement process. 2. Fo ...

Questionyou are hired as a consultant in city x and are

Question: You are hired as a consultant in City X and are charged with the responsibility of creating a plan to deal with the multiple daytime robbery attacks in your area. Police officers have been able to obtain limite ...

1 sheppard and kaylee both think they are the better

1. Sheppard and Kaylee both think they are the better baker. They decide to run an experiment to test who is better with their friend Mal as the determining factor. Each made a large batch of cupcakes and left it out in ...

Beth is a 37-year-old woman who lives with her mother and

Beth is a 37-year-old woman who lives with her mother and brother in a rented apartment. She is seeking outpatient counseling. You are the intake assessment counselor at a community mental health center. She presents fol ...

Follow the following steps and then answer the questions

Follow the following steps and then answer the questions below: Step 1: Access the Nursing Home Compare website at: Step 2: Enter a location (city and state or stat ...

Written assignment - country focusfor this weeks written

Written Assignment - Country Focus For this week's written assignment, select an emerging market, such as Russia, China, India, Vietnam, countries in Eastern Europe, etc.. The text discusses the market environment, polit ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate