Managing Cooling Tower Leaks

Overview

When a Sample Point fails an inspection, a leak investigation workflow begins. This involves identifying the source Exchanger, repairing it, verifying the Exchanger repair, and finally re-testing the Sample Point to close the leak.

Phase 1: The Investigation (Finding the Source)

Once the Sample Point leak data is synced to Chateau:

1. Identify Associated Exchangers:
   • In Chateau, go to the Component grid.
   • Filter for components linked to the leaking Sample Point.
2. Build Investigation Tour:
   • Select the associated Exchangers.
   • Click Build Tour, select M21 - Retest, name it "Exchanger Investigation," and assign it to the technician.
3. Field Investigation:
   • The technician checks out their device to download the new Exchanger tour.
   • They perform M21 Inspections on each Exchanger to pinpoint which one(s) are leaking.
   • The technician Checks In the investigation results.

Phase 2: Repair & Verification

Once the specific leaking Exchanger is identified via the investigation:

1. Maintenance/Repair: Maintenance teams perform the necessary repairs on the identified Exchanger(s).
2. Build Verification Tour:
   • Create a new tour containing the repaired Exchanger(s) AND the parent Cooling Tower Sample Point.
   • Assign this tour to the technician.
3. Field Verification (Exchanger):
   • The technician syncs to retrieve the tour.
   • They perform a follow-up M21 inspection on the Exchanger to verify the repair was successful.
4. Field Verification (Sample Point):
   • Crucial Step: Once the Exchanger passes, the technician must perform a full Cooling Tower Inspection on the Sample Point itself (following the procedure in Performing Inspections (Chateau Mobile)).
   • This confirms the repair effectively stopped the leak from reaching the cooling water stream.
5. Sync: The technician Syncs/Checks In the final results.

Phase 3: Documentation & DOR

Back in Chateau, the successful Sample Point inspection will automatically Close the leak record.

1. Review the Leak Record:
   • Go to the Leaks grid and open the Cooling Tower Sample Point leak.
   • You will see the initial failure, the Exchanger investigation, the Exchanger verification, and the final passing Sample Point inspection all linked.
2. Delay of Repair (DOR):
   • If the Exchanger cannot be repaired (e.g., requires a shutdown) or the verification failed:
   • Select the leak in the Leaks grid.
   • Click Plan DOR and complete the standard DOR workflow.