Keyvan Ashtianinia

Principal/Senior Piping Engineer with nearly twenty years of hands-on experience delivering piping and mechanical engineering solutions across nuclear, water, petrochemical, oil & gas, power generation and advanced industrial facilities. Experienced in Pre-FEED, FEED, detailed design, EPC delivery, brownfield modifications, asset care engineering and construction support. Successfully contributed to the delivery of 80+ engineering projects spanning nuclear, water, petrochemical, oil & gas, power generation and industrial sectors.

Extensive background working within highly regulated and complex environments including HPC, Dounreay, Monju, Sellafield and major EPC projects. Skilled in P&ID development and verification, piping design, plant layout development, piping stress analysis, pipe support design, specification development, technical authority, client liaison, technical approval, multidisciplinary interface management and design assurance. Proven experience providing technical leadership, mentoring engineers and designers, leading design reviews and supporting engineering teams through all phases of project delivery.

Confident in resolving complex technical challenges and delivering safe, compliant, cost-effective and practical engineering solutions.

Senior Piping Engineer at Amentum Clean Energy / Jacobs (2023 – Present)

Supporting multiple nuclear and industrial projects across seven concurrent project assignments including: (Note: Transitioned/Continues from Jacobs UK Ltd)

• NRS Dounreay ETP – Shaft and Silo Decommissioning Programme
• Dounreay Laboratory Development Project
• Monju Sodium Treatment Facility
• PFR Stack Upgrade
• Hinkley Point C
• Koura HFA152a Purification Plant
• Shaft and Silo Integrated Design Team
• Identifying stress-critical piping systems through review of P&IDs, process requirements and line lists.
• Performing piping flexibility and stress assessments using CAESAR II.
• Developing pipe support philosophies and generating standard pipe support solutions for project applications.
• Selecting and reviewing pipe supports considering thermal expansion, sustained loads, occasional loads and constructability requirements.
• Reviewing and validating P&IDs, line lists and process information to support piping design, routing and stress assessments.
• Reviewing and approving piping isometrics, support details and 3D design models.(AVEVA E3D)
• Supporting plant layout development and piping route optimisation.
• Leading multidisciplinary model reviews, design coordination activities and clash resolution workshops.
• Acting as technical authority for piping engineering activities and supporting engineering decision-making.
• Preparing, checking and approving technical documentation, calculations and stress reports.
• Coordinating with mechanical, civil, structural, electrical and safety disciplines.
• Managing client interfaces and attending client meetings, technical reviews and design assurance workshops.
• Supporting procurement activities, vendor package reviews and construction readiness

Piping Engineer – ETP Dounreay Shaft and Silo Decommissioning Programme at Amentum (2024 – 2025)

Identified stress-critical lines and performed piping stress assessments for process and utility systems. Developed and standardised pipe support solutions to support project delivery and consistency across the design. Reviewed multidisciplinary models and resolved design clashes to ensure constructability.

Piping Engineer – Monju Sodium Treatment Services at Amentum (2024 – 2025)

Performed stress and flexibility assessments for safety-class piping systems. Reviewed piping layouts and support arrangements to ensure compliance with project and nuclear requirements. Participated in multidisciplinary design reviews and technical assurance activities. Reviewed pipe support designs and support standardisation requirements. Supported design changes and technical queries during project execution.

Senior Piping Designer/Engineer – EDF Energy – Hinkley Point C at Amentum (2025 – 2026)

Responsible for piping and plumbing design for service buildings. Led 3D model development, clash resolution, and multidisciplinary coordination. Delivered compliant layouts in constrained spaces and supported construction and commissioning queries.

Piping Engineer – Koura Global – HFA152a Purification Plant at Amentum (2025 – 2025)

Produced 3D piping models, valve schedules, datasheets, and isometrics. Designed piping routes to minimise steelwork and optimise constructability. Delivered accelerated brownfield design packages.

• Produced and reviewed piping stress calculations, support designs and flexibility assessments using CAESAR II, together with valve schedules, datasheets and piping isometrics.
• Optimised piping routes to minimise steelwork quantities and improve constructability.
• Supported technical reviews with project stakeholders and client representatives.

Senior Piping Engineer at OSL Consulting (2023 – 2024)

Led piping design teams for Jacobs (British Sugar), INEOS and Reckitt projects. Responsibilities included routing optimisation, MOC leadership, piping stress assessment, model reviews, technical approval of piping deliverables and multidisciplinary coordination.

Lead/Principal Piping Engineer at SIPEC EPC Engineering (2012 – 2022)

Led piping engineering teams across major EPC projects including gas compressor stations, petrochemical units, steam boiler systems, and refinery upgrades.

Responsibilities included scope definition, schedule and budget management, specification development, 3D model setup (AVEVA E3D), technical approval, stress analysis, pipe support design and stress-critical line assessment, vendor engagement, and client coordination. Delivered FEED and detailed design packages and supported construction and commissioning phases.

Senior Piping Designer at Namvaran Consulting Engineers (2009 – 2012)

Delivered FEED and detailed design updates, plant layout modifications, underground piping design, clash resolution, and 3D modelling for petrochemical facilities.

Piping Designer at Science & Oil Industrial Services (2005 – 2009)

Worked on EPC Phase 12 (Asaluye). Produced detailed piping drawings, plant layouts, pump station layouts, pipeline routing, and vendor data reviews. Supported construction and site coordination.

MEng in Mechanical Engineering – Islamic Azad University, Tehran, Iran (2005 – 2007)

BEng in Mechanical Engineering – Islamic Azad University, Tehran, Iran (1996 – 2002)