Complete the table using the ACGIH TLV-TWAs and the assigned protection factors

Question

Complete the table using the ACGIH TLV-TWAs and the assigned protection factors for each type of respirator indicated.

3 10

Pg. 674-675 figures 22-30 and Table 22-G

Example : MUC = TLV x APF TLV for copper dust : 1 mg/m^3 APF for half facepiece respirator 10

= 1mg/m^3 x 10

= 10 mg/m^3

Chemical TLV type of respirator Assigned Protection Factor MUC Acetone 500 Half face APR (half mask)

3 10

2-Butoxyethanol 25 (120mg,m^3 Half face APR (half mask) 3 10 Toluene 50 Full Face Piece APR 50 Calcium Oxide 2mg/m^3 Loose fitting PAPR 25 Gasoline 300 Full Face Piece APR 50 Methyl Ethyl Ketone 200 SCBA Pressure Demand Mode 10,000 Stoddard Solvent 525 mg/m^3 Supplied Air Pressure Demand Full Face piece 1,000

Explanation / Answer

MUC = TLV x APF

so,

1. MUC = 500x3/10 = 150 mg / m3

2. MUC = 120x3/10 = 36 mg / m3

3. MUC = 50x50 = 2500 mg / m3

4. MUC = 500x3/10 = 150 mg / m3

5. MUC = 2x25 = 50 mg / m3

6. MUC = 300x50 = 1500 mg / m3

7. MUC = 500x3/10 = 150 mg / m3

8. MUC = 200x10000 = 2000000 mg / m3

9. MUC = 525x1000 = 525000 mg / m3

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