SAW Emissions Control & Environmental Compliance 2

Question 1

Which OSHA standard primarily governs permissible exposure limits (PELs) for welding fumes in submerged arc welding operations?

Accepted Answer

29 CFR 1910.1000

Answer

29 CFR 1910.1000 establishes OSHA's table Z-1 permissible exposure limits for airborne contaminants including welding fumes.

Question 2

In SAW operations, manganese fume exposure is a critical concern. What is the OSHA PEL for manganese fume (ceiling value)?

Accepted Answer

1 mg/m³

Answer

OSHA sets a ceiling value of 1 mg/m³ for manganese fume to prevent neurological damage from overexposure.

Question 3

What does the term 'action level' mean in the context of SAW environmental compliance monitoring?

Accepted Answer

One-half of the permissible exposure limit triggering enhanced monitoring

Answer

The action level is typically half the PEL and triggers requirements for increased air monitoring and medical surveillance.

Question 4

Which EPA program requires facilities that release certain toxic chemicals above threshold quantities to report annually?

Accepted Answer

Toxic Release Inventory (TRI) under EPCRA Section 313

Answer

EPCRA Section 313 requires facilities meeting size and industry criteria to report toxic chemical releases to the EPA's Toxic Release Inventory.

Question 5

During SAW, flux decomposition can produce sulfur dioxide (SO₂). Which EPA standard regulates SO₂ as a criteria air pollutant?

Accepted Answer

National Ambient Air Quality Standards (NAAQS)

Answer

NAAQS established under the Clean Air Act sets ambient concentration limits for SO₂ as one of six criteria air pollutants.

(SAW) Submerged Arc Welding Certification Practice Test