Metal fabrication for nuclear facilities

Quality, Safety & Reliability for Industrial and Nuclear Projects

ASME-certified welding sets the bar for safety and performance where failure isn’t an option. From power generation and water infrastructure to complex metal fabrication for nuclear facilities, code-aligned welding ensures joints withstand pressure, temperature, and time. Bunney’s Inc. delivers ASME-compliant welding and fabrication across Arizona and the Southwest with disciplined procedures and audit-ready documentation.

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What Is ASME-Certified Welding?

ASME (American Society of Mechanical Engineers) establishes codes and standards that govern how pressure equipment and piping are designed, welded, inspected, and documented. In practice, this means:

  • Qualified procedures & people: WPS/PQR development and welder performance qualifications per ASME Section IX

  • Code-aligned scopes: Work delivered to the applicable section(s) such as BPVC Sections I/VIII (boilers/pressure vessels) and ASME B31.1/B31.3 (power/process piping)

  • Verification: NDE (VT, PT/MT, UT/RT), hydro/pneumatic testing as specified

  • Traceability: Heat numbers, MTRs, filler control, weld maps, and turnover packages

For nuclear scopes, projects may reference ASME Section III and owner QA programs (e.g., NQA-1), depending on classification.

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    Why It Matters

    • Safety & compliance: Code-aligned welds reduce risk under pressure, temperature, and cyclic loading.

    • Reliability: Lower leak/failure rates, longer service life, fewer unplanned outages.

    • Regulatory acceptance: Facilitates approvals for pressure equipment and high-integrity piping.

    • Consistency: Repeatable results via documented procedures and qualified personnel.

    Applications We Support

    • Power Generation: Boilers/HRSG components, steam lines, headers, and balance-of-plant piping.

    • Water & Wastewater: Process, distribution, chemical dosing, and high-integrity pump stations.

    • Oil, Gas & Chemical: Pressure vessels, alloy spools, controlled bolting and testing.

    • Manufacturing/Industrial: Utility piping, pressure equipment, structural attachments.

    • Nuclear Facilities: Metal fabrication for nuclear environments (e.g., stainless/nickel-alloy spools, supports, and component repairs) executed under plant procedures, with documentation suitable for audits.

    Materials & Processes

    • Materials: Carbon steel, stainless (304/316/347), low-alloy steels, and nickel alloys (e.g., Inconel®) per service requirements.

    • Processes: GTAW/TIG, SMAW, GMAW, and orbital GTAW for repeatable, high-integrity welds—selected by code, geometry, and access.

    How Bunney’s Inc. Delivers

    1. Scope & Engineering Coordination – Code classification, joint design, material selection

    2. Procedure & Personnel Qualification – WPS/PQR/WPQ with mockups where needed

    3. Fabrication & Field Installation – Cleanliness controls, purge management, interpass monitoring

    4. Inspection & Testing – NDE, hydro/pneumatic tests, and dimensional checks

    5. Turnover – Weld maps, MTRs, NDE reports, pressure-test logs, and as-builts

    ASME-Certified Welding in Arizona

    Arizona’s climate (heat, UV, dust, monsoon humidity) demands robust fabrication practices, weather-resistant coatings/jacketing, and carefully planned outage windows. Our teams mobilize quickly statewide and coordinate with owner procedures to keep schedules tight and documentation complete.

    Why Choose Bunney’s Inc.

    • Code-aligned execution for power, water, and industrial clients

    • Alloy expertise (stainless and nickel alloys) and orbital GTAW capability

    • Traceable QA/QC with audit-ready documentation

    • Safety-first culture and site-specific training

    • Rapid mobilization for outages and time-critical repairs

    Related Services:

    FAQs

    What’s the difference between Section IX and B31.1/B31.3?
    Section IX governs how procedures and welders are qualified; B31.1/B31.3 set design/fabrication rules for power/process piping.

    Do you provide full material traceability?
    Yes—heat numbers, MTRs, filler lot control, and weld maps are included in the turnover package.

    Can you work during operations?
    Many tie-ins and repairs can be executed under controlled conditions; intrusive work is typically scheduled in planned outages.

    Which NDE methods do you use?
    Project-dependent: VT, PT/MT (surface), UT/RT (volumetric), and pressure testing per code and owner specs.

    Do you handle nuclear-environment fabrication?
    We support metal fabrication for nuclear facilities under owner procedures and documentation requirements, coordinating with plant QA and engineering.

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