Senior Electrical Engineer — Containerised Ammonia System Design

Contract Details

IMMEDIATE START. OUTSIDE IR35 CONTRACT - Senior Electrical Engineer.

Provide detailed electrical design for a containerised ammonia cracker system, supporting safe, reliable, and standards‑compliant operation within a modular container environment.

Develop overall electrical architecture, load calculations, and power distribution design, including single line diagrams, protection philosophy, cable sizing, and equipment specification (switch gear, distribution boards, UPS, and associated systems).

Design and integrate control systems, including PLC hardware selection, I/O definitions, and communication networks, ensuring full compatibility with process and instrumentation requirements.

Address hazardous area requirements associated with hydrogen, including equipment selection (ATEX/IECEx where required), area classification support, intrinsic safety design, and appropriate segregation and grounding.

Design earthing, bonding, and lightning protection systems.

Produce all required electrical layouts for the containerised installation, including lighting, HVAC power integration, cable routing, and space constraints, considering thermal management, manufacturability, and maintainability.

Work shall comply with applicable standards (IEC, BS 7671, IEC 60204, IEC 60079, etc.) and be coordinated closely with process, mechanical, and safety disciplines.

Attendance onsite when required and complete the contract within a six‑month period, although this may extend.

• Design basis documentation
• Load lists
• Single line diagrams
• Detailed wiring diagrams
• Control cabinet layouts
• Cable schedules
• Supporting calculations (e.g., cable sizing, fault levels, protection coordination)
• Support testing and commissioning phases through preparation of electrical FAT/SAT documentation and technical queries

Familiarity with Siemens PLCs and Solid Works Electrical is desired but not essential.