ASKUSRMechanical Engineer - Water Systems

Advanced Light Source Upgrade (ALS-U)


Requisition #: ASKUSR
0146079

Essnova Solutions is seeking an experienced Mechanical Engineer – Water Systems to support the Advanced Light Source Upgrade (ALS-U) and ongoing Advanced Light Source operations at Lawrence Berkeley National Laboratory.

This position will serve as a technical authority for critical process and facility water systems supporting accelerator systems, beamlines, experimental equipment, HVAC interfaces, and associated utility infrastructure.

The ideal candidate brings significant hands‑on engineering experience with industrial cooling water, Low Conductivity Water (LCW), deionized (DI) water, closed-loop cooling systems, process utilities, mechanical infrastructure, and industrial piping systems
. This role will support the complete system lifecycle—from engineering design and equipment specification through installation, commissioning, operations, maintenance, troubleshooting, and continuous improvement.

• Lead the design and engineering of cooling and process water systems supporting ALS-U and existing ALS infrastructure.
• Develop system architectures, P&IDs, flow diagrams, hydraulic calculations, equipment specifications, and supporting engineering documentation.
• Perform engineering analyses involving heat transfer, fluid flow, pump sizing, pressure drop, thermal stability, and water quality.
• Specify pumps, heat exchangers, filtration systems, expansion tanks, piping, valves, instrumentation, water treatment equipment, and related mechanical components.
• Integrate water systems with accelerator, beamline, cryogenic, HVAC, and facility utility systems.
• Evaluate piping materials, valves, instrumentation, and other components required to maintain high‑purity and ultra‑pure water standards.
• Ensure designs comply with applicable ASME and ANSI standards, California building and mechanical codes, laboratory engineering standards, and safety requirements.

• Support operation and engineering of closed-loop Low Conductivity Water (LCW) and deionized water systems
  .
• Monitor critical water‑quality parameters including resistivity, dissolved oxygen, and pH.
• Support chemical dosing, UV sterilization, mixed‑bed deionization, reverse osmosis, filtration, and related treatment processes.
• Develop solutions to prevent biological growth, scaling, contamination, and galvanic corrosion.
• Troubleshoot water chemistry, resin degradation, leaks, pump failures, flow instability, thermal excursions, and related system problems.
• Maintain water purity and system performance while minimizing equipment corrosion and operational downtime.

• Serve as a technical resource and system owner for operational water infrastructure.
• Develop preventive and predictive maintenance programs.
• Monitor system performance, reliability, lifecycle condition, and operational availability.
• Perform root‑cause analysis and troubleshoot mechanical, electrical, hydraulic, and water‑quality issues.
• Coordinate outages, repairs, system modifications, and maintenance activities to minimize impact to facility operations.
• Support rapid response to critical facility incidents and system failures.

• Manage water‑system projects from conceptual design through installation and commissioning.
• Develop technical scopes of work, cost estimates, and project schedules.
• Coordinate contractors, vendors, installation teams, engineering groups, facilities personnel, operations teams, and scientific stakeholders.
• Review installation quality and verify conformance with engineering specifications.
• Support startup, testing, balancing, readiness activities, and commissioning.
• Plan and execute system expansions, upgrades, and retrofits.

• Maintain engineering drawings, calculations, specifications, operating procedures, maintenance procedures, and system inventories.
• Support configuration management and formal change‑control processes.
• Develop operational standards and engineering best practices for facility water systems.

• Perform work in…