CAA
U.S. federal law regulating stationary and mobile air emissions
EN 1090
EU standard for steel and aluminium structural execution
Quick Verdict
CAA mandates US air quality standards and emissions controls for industries nationwide, while EN 1090 requires CE marking via FPC for EU structural steel/aluminium fabricators. Companies adopt CAA for legal compliance; EN 1090 for market access.
CAA
Clean Air Act (42 U.S.C. §7401 et seq.)
Key Features
- Sets NAAQS for six criteria pollutants protecting public health
- Mandates SIPs for state attainment and maintenance planning
- Requires Title V permits consolidating applicable requirements
- Imposes NSPS and MACT technology-based emission standards
- Enables cooperative federalism with EPA oversight of states
EN 1090
EN 1090: Execution of steel and aluminium structures
Key Features
- Risk-based Execution Classes (EXC1-EXC4)
- Factory Production Control (FPC) certification
- CE marking and Declaration of Performance
- Welding coordination per ISO 3834
- Material traceability and NDT inspection
Detailed Analysis
A comprehensive look at the specific requirements, scope, and impact of each standard.
CAA Details
What It Is
Clean Air Act (CAA), codified at 42 U.S.C. §7401 et seq., is a comprehensive U.S. federal statute. It regulates air emissions from stationary and mobile sources to protect public health and welfare. Employs cooperative federalism, blending ambient standards, technology-based controls, and state implementation.
Key Components
- NAAQS for six criteria pollutants (ozone, PM, CO, Pb, SO2, NO2) with primary/secondary levels.
- SIPs, Title V permits, NSPS, NESHAPs/MACT.
- Titles cover mobile sources, acid rain trading (Title IV), ozone protection (Title VI).
- Enforcement via penalties, sanctions, citizen suits; no formal certification but federally enforceable permits.
Why Organizations Use It
Meets legal obligations avoiding penalties, sanctions, FIPs. Manages nonattainment risks, enables permitting. Reduces enforcement exposure, supports ESG, ensures operational continuity amid deadlines.
Implementation Overview
Phased: applicability assessment, emissions inventory, permitting (Title V/NSR), install controls/monitoring (CEMS), reporting (CEDRI/ECMPS), audits. Applies to major sources/industries nationwide; state variations require SIP review.
EN 1090 Details
What It Is
EN 1090 is a harmonized European standard series (EN 1090-1, -2, -3) under the Construction Products Regulation (CPR). It governs the execution, fabrication, assembly, and conformity assessment of structural steel and aluminium components/kits for construction works. Its risk-based approach uses Execution Classes (EXC1–EXC4) to scale requirements based on failure consequences, service conditions, and production complexity.
Key Components
- **EN 1090-1Conformity assessment, Factory Production Control (FPC) certification, Declaration of Performance (DoP), CE marking.
- **EN 1090-2/-3Technical rules for steel/aluminium (materials, welding per ISO 3834, tolerances, corrosion protection, NDT inspection).
- Core principles: traceability, qualified personnel (Responsible Welding Coordinator), risk-scaled controls.
- AVCP systems with Notified Body oversight.
Why Organizations Use It
- Mandatory for EU/EEA market access via CE marking.
- Reduces liability, ensures safety, minimizes rework.
- Builds trust, enables high-risk projects (e.g., bridges, stadia).
Implementation Overview
Phased: gap analysis, FPC build, personnel training, Notified Body certification, ongoing surveillance. Targets fabricators in construction; 3-12 months typical. (178 words)
Key Differences
| Aspect | CAA | EN 1090 |
|---|---|---|
| Scope | Air emissions, NAAQS, source standards, permits | Steel/aluminium structural fabrication, conformity |
| Industry | All emitting industries, US-wide | Construction/metal fabrication, EU/EEA |
| Nature | US federal law, mandatory enforcement | Harmonized standard, mandatory CE marking |
| Testing | CEMS, stack tests, Title V audits | FPC certification, welding quals, NDT |
| Penalties | Fines, sanctions, FIPs, citizen suits | Market exclusion, certificate suspension |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about CAA and EN 1090
CAA FAQ
EN 1090 FAQ
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