Emissions Control & Environmental Compliance Flashcards

When SAW cooling water containing metal particulates is discharged to a municipal sewer, which regulatory program typically applies?

Answer: Pretreatment standards under the Clean Water Act (40 CFR Part 403)

Industrial discharges to municipal sewer systems are regulated under the CWA pretreatment program, which sets limits for metals and other pollutants.

A SAW facility with a baghouse dust collector must conduct stack emission testing. What is the primary purpose of this testing?

Answer: To demonstrate compliance with permitted emission limits and equipment performance

Stack emission testing (source testing) verifies that air pollution control equipment is functioning properly and that actual emissions comply with permit limits.

Hexavalent chromium (Cr VI) can be generated in SAW when welding stainless steel. What is OSHA's PEL for Cr VI in general industry (8-hour TWA)?

Answer: 5 µg/m³

OSHA's 29 CFR 1910.1026 sets a PEL of 5 µg/m³ for hexavalent chromium as an 8-hour time-weighted average in general industry.

Under EPA's Emergency Planning and Community Right-to-Know Act (EPCRA), what is the reporting trigger for a release of manganese compounds above the reportable quantity?

Answer: Immediately notify the Local Emergency Planning Committee (LEPC) and State Emergency Response Commission (SERC)

EPCRA Section 304 requires immediate notification to the LEPC and SERC when a hazardous substance release exceeds the reportable quantity.

A SAW shop uses an air recirculation system that filters fumes and returns air to the workspace. What critical requirement must be met for this to be acceptable?

Answer: Contaminant concentrations returned to the workspace must remain below applicable PELs

OSHA allows recirculated air only if the returned air concentration of all contaminants remains below PELs, verified by monitoring.

Which of the following SAW flux handling practices best reduces fugitive dust emissions during transfer operations?

Answer: Using enclosed pneumatic transfer systems with dust collection at transfer points

Enclosed pneumatic transfer with integrated dust collection minimizes fugitive dust by containing particulates at every transfer point.

Which ISO standard series is most relevant to environmental management system (EMS) implementation at a SAW manufacturing facility?

Answer: ISO 14001

ISO 14001 specifies requirements for an environmental management system, helping organizations improve environmental performance and achieve compliance.