Powered by GoogleTranslate

Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14480859 - Twelve Employees Suffer Minor Injuries In Explosion

Accident: 14480859 -- Report ID: 0214200 -- Event Date: 03/26/1988
InspectionOpen DateSICEstablishment Name
10051305003/26/19883369Howmet Corporation - Dover Casting Division
At approximately 5:50 p.m. on March 25, 1988, the leacher autoclave (#2) in building #1, which had been in service for about three weeks, reached a temperature of about 490 degrees Fahrenheit and a pressure of 400 psi. At this point the single locking (locating) pin sheared (the second pin was missing) allowing the cover to rotate against the locking ring, which was not fully engaged. The cover was released with explosive force, tearing a large hole in the roof and rupturing a 2 in. high-pressure gas line. As the head fell, a second hole was made in the roof about 25 yards northwest of the original location. Approximately 120 gallons of 28 percent sodium hydroxide solution was instantly vaporized into a cloud of caustic fumes that drifted over the area, causing eye, lung, and throat irritation to approximately 25 people, including the police who responded to the emergency. Employees #1 through #12 required medical attention. The gas line was promptly shut off by plant maintenance personnel who responded to the explosion. This action prevented further serious fire and explosion damage and possible loss of life.
Keywords: sodium hydroxide, caustic, inadequate maint, unsecured, work rules, rupture, explosion, high pressure, gas leak, high temperature
Employee # Inspection Age Sex Degree Nature Occupation
1 100513050 Non Hospitalized injury Cut/Laceration Occupation not reported
2 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
3 100513050 Non Hospitalized injury Strain/Sprain Occupation not reported
4 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
5 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
6 100513050 Non Hospitalized injury Cut/Laceration Occupation not reported
7 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
8 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
9 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
10 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
11 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported
12 100513050 Non Hospitalized injury Burn(Chemical) Occupation not reported

Thank You for Visiting Our Website

You are exiting the Department of Labor's Web server.

The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. The Department of Labor also cannot authorize the use of copyrighted materials contained in linked Web sites. Users must request such authorization from the sponsor of the linked Web site. Thank you for visiting our site. Please click the button below to continue.

Close