The Metropolitan Water District of Southern California

Job Details

Job Summary

(Plant Maintenance Mechanic)
The Water System Operations Group, Water Treatment Section, currently has one (1) opening for an Operations & Maintenance Technician IV Mechanical (Plant Maintenance Mechanic) position within the Mechanical O & M Team located at the Jensen Water Treatment Plant in Granada Hills, CA.

The Jensen plant is the second largest water treatment plant in the United States with the capability to treat 750 million gallons daily. You will contribute to the success of this treatment plant by performing operational support, including preventative and corrective maintenance to maintain and repair the equipment and structures of the water treatment plant and related facilities, including all mechanical systems used in the treatment process.

This journey level position is responsible for the following: Inspect, maintain, repair/build and improve the reliability of equipment such as chemical feed systems, ozone generators and related systems, flash mixers, flocculators, filter beds, geared drive equipment, sedimentation basins, tanks, valves, pumps, compressors, piping systems and slide gates, processes such as chemical unloading transporting and transfer systems, reclamation systems, and sludge removal systems; Operate cranes/rigging and heavy equipment; and Work on operational activities including those tasks associated with effective water flow and treatment such as operating valves and performing minor adjustments and calibrating chemical feed and similar systems.

Performs journey level mechanical maintenance tasks and activities at treatment plants, aqueduct pump plant, chemical unloading and transfer facilities, conveyance and distribution structures, reservoirs, hydroelectric plants, along right-of-ways, and at other facilities utilizing equipment, processes and systems to ensure ongoing reliability of water and power delivery.

1. Performs a wide variety of journey mechanical preventive and corrective maintenance on water treatment related systems, processes and facilities. PM and CM activities includes work on oxygen generation and ozone equipment, valves, pneumatic and hydraulic control systems, pumps, generators, lubrication and cooling equipment, chemical feed systems and associated equipment.
2. Completes PM and CM activities on large-scale water treatment assets, systems and processes including flocculators, filter beds, flash mixers, conveyor systems, sedimentation basins, storage tanks, slide gates, pipes, valves and varied drive and control systems to maintain plant integrity, capacity and operational reliability.
3. Utilizes state-of-the-art technology, perform or assist with predictive and preventive maintenance activities to determine equipment wear, including predictive analysis through laser alignment, vibration and oil analysis to anticipate maintenance needs and determine appropriate actions to maintain and enhance equipment uptime.
4. Performs and/or assist with preventive and corrective maintenance on mechanical/electrical systems necessary for standby power generators and associated systems to maintain operational readiness during outages or other emergencies.
5. Performs preventive and corrective maintenance on Chemical Unloading Facility equipment, processes and systems to include piping, valves, structures, standpipes, metering and monitoring equipment, alarms and test equipment. Operate and monitor valves, gauges and other chemical transfer and mixing systems to ensure safe and effective transfer and distribution of chemicals and movement of rolling stock or other lading equipment.
6. Repairs and rebuilds treatment equipment, systems and processes as necessary requiring appropriate planning, fabrication of parts, welding and/or assembly and installation to bring equipment/processes to designed operating condition.
7. Performs and/or assists with improving mechanical systems associated with construction and improvement projects such as building and plant enhancements directly associated to water treatment systems including modifications, rebuilding and relocating plant assets and equipment.
8. Completes, at times in collaboration with Specialist level or Control Technicians, complex predictive, preventive, and corrective maintenance on mechanical/electrical systems associated with large motors, pumps, generators, turbines, valves, varied treatment process equipment, and other mechanical related systems associated with treatment plants.
9. Utilizes instrumentation to test and monitor the capabilities, limits, and effectiveness of equipment and subsystems of equipment, as well as other mechanical processes and systems directly related to power and water systems, to measure the ongoing effectiveness of those systems and to assure the quality of maintenance and/or improvements.
10. Inspects, tests, calibrates, and records readings for a variety of mechanical/electrical systems and equipment to meet reliable equipment life and service expectations, including motors, compressors, valves, pumps, flow meters, cranes and lifts, chemical storage and feed systems, basins, tanks, valves and related equipment to ensure effective water output of treatment plants.
11. Assists with planning and coordinating scheduled predictive, preventive and corrective maintenance, as well as unplanned outages, shutdowns, and other emergency situations, to minimize equipment downtime and interruption of service to member agencies or other customers.

Work Schedule: Monday Thursday, 6:00 a.m. 4:30 p.m.


Education and Experience:

High school diploma or a Certificate of High School equivalency in addition to a minimum of 6 years in a mechanical maintenance position at a water agency or in a conveyance and distribution facility such as a pump plant, treatment plant, and hydroelectric facility or similar environment.


High school diploma or a Certificate of High School equivalency in addition to the attainment of journey level skills through a recognized mechanical trade training program. Journey level experience as demonstrated by practical application of general and advanced techniques and practices specific to the operation, maintenance, and repair of mechanical systems at a water agency or in a conveyance and distribution facility such as a treatment plant, pump plant, and/or power generation systems, and related apparatus.

Required Knowledge of: Theories and practices of mechanical systems and their application to large-scale mechanical/electrical systems and equipment related to hydroelectric power plants, water treatment and distribution systems, as well as general and utility facility mechanical systems, applying methods, practices, machine shop equipment for metal fabrication, and tools to ensure reliable operations for the movement and treatment of water, generation of power, and optimization of assets and equipment to meet operational demands within established limits and standards, contemporary maintenance reliability analysis and troubleshooting methods including determination of failure causes, diagnostic analysis through failure mode, and root cause analysis, using traditional analog and precision digital instruments to ensure critical measurements and alignments as part of diagnostic and predictive maintenance, including laser alignment equipment, analog and digital meters, calipers and other tools related to close tolerance analysis and work, and safety practices and regulations for operating or working near electrical and/or mechanical equipment, high voltage systems, hazardous materials, and associated tools and equipment.

Required Skills and Abilities to: Understand and interpret mechanical and electrical engineering data necessary to effectively implement predictive, preventive, corrective, and improvement activities. Frequently perform or assist in the drafting, design, layout and development of procedures, manuals, orders and similar documentation to ensure safe operating techniques and/or for training, to interpret complex schematics, blueprints, electrical diagrams, instructions, manuals, operating and maintenance procedures, and specifications related to water treatment, conveyance and distribution and pump plant, as well as building, facility and hydroelectric power systems/equipment, and experience to utilize tools and diagnostic equipment to test and monitor equipment and asset condition, as well as repair, install and replace equipment necessary to meet water and electrical generation demand and/or capacity, use and maintain mechanical/electrical tools and equipment traditionally used in hydroelectric plants, pump plants, treatment plants, and within water and power control and distribution infrastructure and facilities, apply and guide others in adhering to safety practices and regulations for operating or working near electrical and/or mechanical equipment, high voltage systems, hazardous materials, and associated tools and equipment. 

Employees in this position may be required to obtain and maintain the following certifications, licensing and registrations: 
. Valid Driver's license from state of residency equivalent to a California Class C (Must have at time of application).
. Forklift Certification 
. Chemical Responder Certification 
. Manlift Certification 
. Crane Certifications 

Expectations of Hours of Service, Emergency and Stand-by Service:
Employees in this position may be required to work off-shift hours and/or stand-by service to address operational needs and emergencies as required. May be required to work extended periods away from the normal reporting location.

Physical Demands:
Heavy tasks may require lifting and carrying items weighing up to 50 pounds, with intermittent need to lift and carry materials and/or equipment weighing up to 100 pounds with assistance. Frequently requires pushing, pulling, turning and positioning parts, assemblies, equipment and tools weighing as much as 100 pounds with assistance. May be required to lift and move heavy items with the assistance of others and with lifting devices such as jacks, hoists and cranes of varied types and capacities. Physical effort includes frequent walking, stooping, bending, reaching, standing, crawling, climbing, kneeling and sitting for long periods of time. At times may be required to use Self Contained Breathing Apparatus (SCBA) or other respiratory filtration and personal protection devices.

Work Environment:
Work is performed indoors and outdoors at large pumping, treatment, hydroelectric or control facilities, or associated assets, under all types of conditions including extreme temperatures, open and confined spaces ranging from crawl space to sub-structures as well as varied types of terrains. Job tasks frequently require working from heights and functioning from lifts, hoists, scaffolds, and cranes over surfaces ranging from earthen materials to concrete, steel and water. Work frequently is conducted in close proximity to high volume/pressurized water, as well as exposed, electrically energized equipment including high voltage systems. The work environment often involves exposure to equipment and tools producing high levels of noise, as well as potentially dangerous materials, chemicals, and machinery that require careful adherence to extensive safety precautions, rules and regulations. 

Job Related Selection Criteria:
50% Technical knowledge of and skills in:
corrective and preventative maintenance
troubleshooting and repair of industrial equipment and systems
operational and maintenance practices of water treatment equipment and
safety practices related to the industry
15% Interpersonal/Teamwork skills
15% Adaptability/Flexibility
10% Decision Making Skills
5% Oral communication skills
5% Job Preparation (education, experience and training relevant
to the position)
100% Total 
Applicants meeting the minimum qualifications will be invited to participate in a written examination. The written exam is a 2-hour examination. The written exam assesses knowledge and principles of mechanical work. Topics may include: bearings; seals; lubricants; mechanical drives; piping systems; pumps; hydraulic systems; rigging; welding and fabrication; and basic machining. The practical exam consists of exercises designed for the candidate to demonstrate journey-level skill in one or more of the following: precision measurement; pump alignment (dial indicator); gear pump assembly; bearings; welding/fabrication; pipe fitting; rigging; print reading; and PVC piping.

A reference manual will be available during the written exam.


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