Incident Report-事故报告
Date: May 16,2004
To: Tom Warner
From: Carlos Sandia
Subject: REPORT ON CHILLED WATER LEAKS IN D/823
Introduction
On May 15,2004, a flood was reported in D/823. I was called in to repair this leak. The following is a report on my findings and maintenance activities.
Discussion
Agenda
8:15 p.m. The flood was reported.
8:25 p.m. I arrived at D/823 and discovered that the water level in the expansion tank at HVAC unit 44 253R -01 was 4 feet above normal and the tank valve was open.
8:30 p.m. A second flood was reported at HAVC unit 44 937 -01 in the same department.
8:35 p.m. I shut off the open tank valves.
9:00 p.m. The expansion tank levels and pressure returned to normah
9:30 p.m. All leaks were secured.
Conclusion
The chilled water leaks were caused by a malfunctioning level switch on the chilled water expansion tanks in the west boiler rooms. This caused the water level in the tanks to rise,which increased the system pressure to 150 lb.
Recommendation
The level control switch will be repaired. An alarm system will be installed by November 1,2004.
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