The ACGIH TLV-TWA for ethyl bromide is 5 ppm. ● ● What does that correspond to in mg/m³? (assume NTP) Using the exposure measurements below (taken during a single shift), determine the worker's TWA exposure. Was the TLV-TWA exceeded?
The ACGIH TLV-TWA for ethyl bromide is 5 ppm. ● ● What does that correspond to in mg/m³? (assume NTP) Using the exposure measurements below (taken during a single shift), determine the worker's TWA exposure. Was the TLV-TWA exceeded?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:●
The ACGIH TLV-TWA for ethyl bromide is 5 ppm.
●
●
What does that correspond to in mg/m³? (assume NTP)
Using the exposure measurements below (taken during a single shift),
determine the worker's TWA exposure. Was the TLV-TWA exceeded?
Exp. Conc. Exp. Duration
(ppm)
(hours)
1.3
0.6
1.8
2.5
0.5
1.1
1.5
2.7
4.8
15.9
12.4
9.3
Expert Solution
Step 1
Introduction
The threshold limit value (TLV) is considered to be a level to which a worker can be exposed per shift in the worktime without adverse effects . ACGIH publishes TLV guidelines and indices for use by industrial hygienists in making decisions regarding safe levels of exposure to various chemical and physical agents found in the workplace. TWA -TLV stands for Time Weighted Average of Threshold Limit Value, and quantifies the average level of exposure of a worker over a 8 hour shift , usually calculated as a weighted average of 6 day weekly recordings.
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