FUNCTION & CONTROL METHOD
Radar, guided-wave radar, differential pressure, displacer, capacitance, ultrasonic or nuclear method is selected from pressure, vapor, foam, density, interface and nozzle geometry.
ELECTRICAL, INSTRUMENTATION & AUTOMATION
Level Instrumentation
Measures continuous level and independent high/low limits for process vessels, tanks and interface services.
MAIN HARDWARE & SYSTEM BOUNDARY
Level transmitters, gauges, bridles/chambers, switches, stilling wells, remote seals, overfill devices and local indicators.
CRITICAL DESIGN INPUTS
Approved P&IDs and control philosophy, process ranges and alarm/trip limits, hazardous-area classification, environmental conditions, I/O and load lists, availability/redundancy target, package interfaces, communication protocols, cybersecurity and client standards.
ENGINEERING DELIVERABLES
System architecture, instrument/equipment index, datasheets, I/O list, hook-ups, loop and wiring diagrams, cabinet/panel drawings, cable schedule, network drawings, control narratives, cause-and-effect, logic diagrams, graphics, test procedures and as-built backups.
FUNCTIONAL SAFETY, RELIABILITY & CYBERSECURITY
Independent overfill protection, diverse high-high detection, proof-test access, voting where required and tank alarm response are coordinated with ESD.
TESTING, COMMISSIONING & APPLICATIONS
Columns, reflux drums, separators, reactors, storage tanks, LPG vessels and sumps. Wet/dry calibration and functional trip testing are recorded.
CODES, STANDARDS & QUALITY BASIS
API 2350 for tank overfill, IEC 61511, ISA practices, ATEX/IECEx and applicable EN/DIN/GOST standards.
CONTRACTUAL CODE BASIS
API 2350 for tank overfill, IEC 61511, ISA practices, ATEX/IECEx and applicable EN/DIN/GOST standards.