Attachment_13_Modification_and_Repair_Backlog.xlsx

This is a Modification and Repair Backlog spreadsheet documenting maintenance work orders for the Yuma Desalting Plant (YDP) across multiple operational areas and facility zones. The document contains detailed records of 300+ work orders spanning from 2010 through June 2026, tracking planned and completed maintenance activities across 16 operational areas plus research facility (RF) zones.

The spreadsheet captures critical maintenance data including work order numbers, asset identification codes, asset descriptions, maintenance descriptions, assigned craft disciplines (electrical, mechanical, instrumentation, etc.), work type classifications (CM for corrective maintenance, OP for operational, MOD for modifications), priority levels (1-4, with 1 being highest), report dates, estimated labor hours, and actual labor hours completed. Work orders cover diverse equipment categories including motors, pumps, valves, control systems, HVAC units, instrumentation, structural repairs, and process equipment. The backlog reflects substantial deferred maintenance across electrical systems (YD-ELECT craft assignments), mechanical systems (YD-MECH), and instrumentation systems (YD-INST), with estimated total labor hours of approximately 46,000 hours against actual hours completed of roughly 36,000 hours, indicating an ongoing maintenance execution deficit. Key problem areas include control panel repairs, valve actuator failures, sensor and transmitter malfunctions, pump seal leaks, and system calibration issues distributed throughout water treatment, desalting, chemical handling, and support facility infrastructure.