Tyler M Nies

Machinist’s Mate Second Class (MM2)

U.S. Navy — USS George H.W. Bush (CVN 77)

Norfolk

07.2021 - 07.2025

Water Production, Purification Management
Operated two distilling units producing 200,000 gallons of potable water daily for 5,000 personnel, managing pumps, valves, temperature, and flow rates manually.
Purified water to reactor-grade standards, ensuring quality through strict sampling and testing procedures.
Operated a disinfectant system to be injected into distillate to create safe drinking water.
Followed precise water chemistry protocols to protect equipment integrity.
Sole supervisor responsible for managing inventory of up to 400,000 gallons of potable and reserve feedwater to support crew and reactor operations. Maintained water levels above minimum thresholds in accordance with Naval Reactors safety standards.
Logged all temperature and pressure of equipment into an electronic log system, and performed trend analysis to prevent equipment damage.
Mechanical System Maintenance
Performed preventive and corrective maintenance on pumps, valves, piping, heat exchangers, and both high- and low-pressure air compressors.
Diagnosed and repaired system issues to maintain critical operations and reduce downtime.
Read and interpreted schematics and technical drawings for equipment isolation (tag-out lock-out) and safe work.
Safety, Compliance & Communication
Followed Navy safety regulations outlined in OPNAVINST 5100.19F.
Conducted inspections, identified hazards, and enforced proper procedures for safe system operation.
Managed programs such as the carbon steel inspections, including scheduling, training, and reporting.
Reported any discrepancies and anomalies to control room/chain of command.
Reported hourly to the propulsion plant officer about equipment status and logs.
Leadership & Training
Supervised junior technicians in safe maintenance practices and tool usage.
Served as senior instructor for propulsion plant drills, simulating emergency scenarios and evaluating crew response.
Trained and mentored new sailors on watchstanding, plant operations, and emergency protocols.