MEC/General/TBT-MEC-001

MEICA Safety Awareness

MEICA Works › General › MEICA Safety Awareness

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MEICA stands for Mechanical, Electrical, Instrumentation, Control, and Automation — the systems that make infrastructure work.
MEICA installation involves working with heavy equipment, live systems, pressurised pipework, and electrical connections.
Commissioning is one of the highest-risk phases — systems are energised and tested for the first time under controlled conditions.
LOTO procedures are critical during MEICA work — unexpected energisation of equipment causes electrocution and crushing injuries.
Pressure testing of pipework and vessels involves stored energy that can cause catastrophic failure if not properly controlled.
Lifting heavy mechanical equipment such as pumps, motors, and valves requires detailed lift plans under LOLER.
Electrical terminations and connections must only be carried out by competent, qualified electricians with proper isolation.
Chemical dosing systems handle corrosive and toxic substances that require COSHH assessments and emergency procedures.
Pre-commissioning checks must be completed and signed off before any system is energised or put into service.
Clear communication between mechanical, electrical, and process teams is essential to prevent conflicting activities.

Prevent energisation injuries	Unexpected start-up during installation kills workers — LOTO and isolation procedures are mandatory for all MEICA work.
Commissioning risk	First energisation of systems introduces new hazards — structured pre-commissioning checks prevent catastrophic failures.
Coordination	Multiple trades working on interconnected systems creates conflict risk — clear communication prevents dangerous interactions.

Don't

Follow LOTO procedures for all work on mechanical and electrical equipment.
Complete pre-commissioning checklists before any system is energised for the first time.
Use a lift plan for all heavy equipment installation including pumps, motors, and valves.
Ensure electrical connections are made only by qualified, competent electricians.
Carry out pressure tests in accordance with the approved test procedure and exclusion zones.
Communicate with other trades before starting work that may affect shared systems.
Wear the correct PPE for the task including gloves, eye protection, and hearing protection.
Follow COSHH procedures when handling chemicals for dosing systems or treatment processes.
Attend commissioning briefings and understand the energisation sequence for your area.
Report any equipment damage, incorrect specifications, or installation concerns immediately.

DON'T work on any MEICA equipment without confirming proper LOTO isolation is in place.
DON'T energise systems without completing and signing off all pre-commissioning checks.
DON'T lift heavy equipment without a written lift plan and competent slinger in place.
DON'T carry out electrical work unless you are a qualified, authorised electrician.
DON'T stand in the line of fire during pressure tests — use designated exclusion zones.
DON'T work on interconnected systems without coordinating with other trades first.
DON'T remove PPE during MEICA installation — hazards change rapidly as work progresses.
DON'T handle dosing chemicals without reading the COSHH assessment and data sheet.
DON'T bypass commissioning procedures or skip steps to save time.
DON'T assume a system is dead — prove isolation and test before every intervention.

See also: Commissioning Safety | Pipe Fitting & Flange Safety

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