Service / EC-03

Critical electrical & controls

Planned maintenance and fault finding across electrical supplies, control panels, motors, fans and control networks.

SCOPEELECTRICAL / CONTROLSICS / EC-03

The work

Electrical and control system fault finding.

A controls fault may be caused by the electrical supply, panel logic, communications or connected plant. Checking each part in isolation can miss the cause.

PPM visits can cover panel condition, electrical connections, protective devices, contactors, relays, drives, control signals, motors and standby arrangements.

Approach

From the reported fault to a tested conclusion.

The exact test plan depends on the system, its condition and the effect of taking equipment out of service. These are the usual stages for this type of work.

Define the operating state

Confirm supplies, controls, interlocks, standby arrangements and the circumstances of failure.

Measure the control path

Check protective devices, relays, drives, signals, communications and connected plant.

Test under command

Prove the required operating sequence and identify repairs or further specialist testing.

What ICS can investigate

Check the complete operating sequence.

+Incoming and control power
+Contactors, relays, drives and protective devices
+Control logic and interlocks
+Field inputs, outputs and feedback
+Communications and system interfaces

Outputs

Test results, findings and required work.

The report format and level of detail are agreed before the work starts.

Useful before attendance

Panel drawings and equipment schedules
Control descriptions or logic information
Fault history and measured values
Isolation and access arrangements

PPM service record

Diagnostic findings

Measured test results

Interface responsibility map

Prioritised repair scope

Retest and return-to-service plan

Contact ICS

Have the fault history and system records ready.

Discuss the work