Hazardous Materials Accident Report
Nurse Tank Failure With Release of Hazardous Materials
Near Calamus, Iowa
April 15, 2003
NTSB Number HZM-04/01
NTIS Number PB2004-917001
PDF Document(900 K)
The National Transportation Safety Board determines that the probable cause of the sudden failure of the nurse tank at the anhydrous ammonia filling facility near Calamus, Iowa, on April 15, 2003, was inadequate welding and insufficient radiographic inspection during the tanks manufacture and lack of periodic testing during its service life.
As a result of its investigation of the accident, the Safety Board identified two major safety issues:
As a result of its investigation of this accident, the Safety Board makes safety recommendations to the Research and Special Programs Administration and River Valley.