Instrument Drafter – Loop Diagrams, P and ID

Job Summary:

The Senior Instrument Drafter is responsible for overseeing the preparation, review, and quality assurance of detailed instrumentation and control drawings, including Piping & Instrumentation Diagrams (P&IDs), loop diagrams, wiring schematics, and hookup drawings. This role ensures that all drawings meet project standards, support engineering deliverables, and align with multi-discipline integration throughout the project lifecycle.

Key Responsibilities:

• Lead preparation and revision of instrumentation deliverables: P&IDs, loop diagrams, termination drawings, JB schedules, and instrument index updates.

• Review and ensure accuracy of control loop representations, wiring schematics, and instrument tag coordination.

• Validate all drawings against engineering inputs, control philosophies, I/O lists, and vendor datasheets.

• Maintain drafting standards in line with ISA S5.1, IEC, and client-specific documentation practices.

• Supervise and mentor a team of junior and mid-level drafters to ensure drawing consistency and deliverable quality.

• Collaborate with engineers from instrumentation, electrical, and process disciplines to ensure cross-functional alignment.

• Support document control, revision tracking, as-built verification, and drawing transmittals throughout the design and construction phases.

• Participate in constructability reviews and respond to RFIs from site teams.

• Interface with vendors and packaged equipment suppliers to incorporate third-party instrumentation drawings into project documentation.

• Ensure timely delivery of all instrumentation drawings to meet project milestones.

Qualifications:

• Diploma or Degree in Drafting, Instrumentation, or Engineering Design Technology

• 8–12 years of experience in instrumentation drafting, including team leadership and QA/QC responsibilities

• Advanced proficiency in AutoCAD, SmartPlant Instrumentation (SPI), or equivalent drafting tools

• Deep understanding of instrumentation systems, control loops, PLC/DCS integration, and field device layouts

• Familiarity with international standards (ISA, IEC, ISO) and industrial project workflows (EPC or plant-based)

Skills & Competencies:

• Leadership in drafting team coordination and quality assurance

• Precision in drawing development and document control

• Strong communication with engineering, construction, and vendor teams

• Advanced problem-solving and cross-discipline coordination skills

• Ability to manage high volumes of drawings across multiple project phases