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Inspection Detail

Inspection: 309303931 - Ceradyne Inc

Inspection Information - Office: Ca Santa Ana District Office

Nr: 309303931Report ID: 0950631Open Date: 11/24/2008

Ceradyne Inc
17466 Daimler St
Irvine, CA 92614
Union Status: NonUnion
SIC: 3299/Nonmetallic Mineral Products, Not Elsewhere Classified
NAICS: 327999/All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
Mailing: 3169 Red Hill Ave, Costa Mesa, CA 92626

Inspection Type:Accident
Scope:Partial Advanced Notice:N
Safety/Health:Safety Close Conference:02/27/2009
Planning Guide: Safety-Manufacturing Close Case:02/17/2011

Related Activity:TypeIDSafetyHealth

Violation Summary
Serious Willful Repeat Other Unclass Total
Initial Violations 1 1 2
Current Violations 1 1 2
Initial Penalty $18,000 $0 $0 $560 $0 $18,560
Current Penalty $18,000 $0 $0 $0 $0 $18,000
FTA Amount $0 $0 $0 $0 $0 $0

Violation Items
# ID Type Standard Issuance Abate Curr$ Init$ Fta$ Contest LastEvent
  1. 01001 Other 3580 A 02/27/2009 03/16/2009 $0 $560 $0 03/25/2009 F - Formal Settlement
  2. 02001 Serious 3577 A 02/27/2009 03/16/2009 $18,000 $18,000 $0 03/25/2009 F - Formal Settlement

Accident Investigation Summary
Summary Nr: 202549283Event: 11/22/2008Employee Dies After Being Struck By Pieces Of Grinding Wheel
On November 22, 2008, Employee #1 was an equipment operator at Ceradyne Inc., a manufacturer of advanced technical ceramic products. A coworker had worked the day shift and set up a CNC ID/OD Grinder, Type 1632 Gold, Serial No. 837, manufactured by Weldon Machine Tools, in order to grind ceramic rings. The set up entailed installing a 7 in. aluminum grinding wheel and downloading a program from a laptop computer to the CNC Grinder. Employee #1 worked the night shift and made adjustments to the machine to grind ceramic parts. He changed the wheel speed in the CNC program from 6,500 rpm to 13,000 rpm and turned on the machine. Other employees indicated that they heard a loud and unusual sound for several seconds followed by a loud popping sound. Employee #1 was injured when the grinding wheel broke apart at the high rpm and pieces of it struck him. He was hospitalized and died when he was taken off of life support three days later.
Keywords: grinder, equipment operator, struck by, grinding wheel, grinding machine
Inspection Degree Nature Occupation
1 309303931 Fatality Other Grinding, abrading, buffing & polishing mach. op's

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