Electrical Equipment for Water Infrastructure
Water treatment facilities (such as the water purification plants and water reclamation centers in various regions) consist of power receiving and transforming facilities, monitoring and control equipment, and instrumentation equipment, therefore requiring extensive knowledge. We work closely with our customers in order to resolve their issues, and help to ensure smooth operation of their facilities through periodic inspections and emergency maintenance.
Features
- Water treatment plant facilities are in constant operation, 24 hours a day, 365 days a year, and a sudden equipment failure can affect people's lives. Our technicians can take responsibility for responding to such issues.
- Facilities are operated in a variety of ways. We propose maintenance methods that minimize impact through appropriate timing in line with time slots where stoppage is possible.
- We properly ascertain when to renew equipment. We propose life-extension measures for equipment and partial renovations (selection of retrofit equipment) to match old equipment.
Malfunction case study (Control center burnout)
Some water treatment facilities are frequently cycled between operating and stoppage, leading to the equipment deteriorating significantly.
Failure to perform periodic inspections and maintenance may result in heat generation and burnout of the equipment.
Cleaning and tightness checks inside the unit and periodic replacement of the electromagnetic contactor and guard relay are necessary.
Maintenance and inspection services
Meiden Engineering provides maintenance and inspection services for customers to achieve long-term stable operation of equipment.
Monitoring equipment
Inspection of monitoring equipment [controller PLC / sequencer SQC]
Normal (simple) inspection (inspection while equipment is in operation)
- 01Program operation status check
- 02Creation of backup program
- 03Error history check
- 04Appearance check
- 05Cleaning
Precise (detailed) inspection (inspection while equipment is stopped)
- 01Program operation status check
- 02Creation of backup program
- 03Error history check
- 04Appearance check
- 05Cleaning
- 06PC board cleaning
- 07PC board input/output all-point function check
The following suggestions are made based on the inspection results.
- (1)Proposals for improvement of defective parts
- (2)Creation of maintenance plans (Information on parts to be periodically replaced until equipment renewal)
- (3)Proposal of renovation plan
Meidensha PLC compatible models
ADC6000, ADC5000, ADC4000
ADC600, RC500, RC200, RC100
VC5000, VC100 (New JIS-compliant model)
- *We have experience in replacing obsolete models
Switchgear equipment
Inspection of switchgear
Inspection details
- 01Appearance check
- 02Protective relay test
- 03Insulation resistance measurement
- 04Accuracy check and adjustment
- 05Protective interlocking test
The following suggestions are made based on the inspection results.
- (1)Proposals for improvement of defective parts
- (2)Creation of maintenance plans
(Information on parts to be periodically replaced until equipment renewal) - (3)Proposal of renovation plan
Target models
High-voltage panels, low-voltage panels, control centers, auxiliary relay panels, etc.
Instrumentation equipment
Inspection of instrumentation equipment
Inspection details
- 01Appearance check
- 02Function tests
- 03Accuracy check and adjustment
- 04Settings data checks
The following suggestions are made based on the inspection results.
- (1)Proposals for improvement of defective parts
- (2)Creation of maintenance plans
(Information on parts to be periodically replaced until equipment renewal) - (3)Proposal of renovation plan
Target models
Measuring instruments - flow meters, pressure gauges, water level gauges, etc.
Transducers - isolators, alarm set stations, integrators, etc.
Water quality meters - residual chlorine meters, DO meters, MLSS meters, turbidity meters, etc.
