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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 202656997 - Sandblasting Worker Sprays Leg With Abrasive Slag

Accident: 202656997 -- Report ID: 0950643 -- Event Date: 09/26/2012
InspectionOpen DateSICEstablishment Name
31666798910/05/20123441Valley Iron Fabricators & Erectors Inc
At approximately 2:00 p.m. on September 26, 2012, Employee #1 was working as a general laborer for Valley Iron Fabricators and Erectors, Inc. in Lancaster, CA. He was an employee of the employer (that is, not a temporary worker). Valley Iron Fabricators and Erectors, Inc. was a specialized manufacturer. It made amusement park ride installations, modified aerospace facilities, and was a structural steel framer and erector. Employee #1 and his coworker were sandblasting structural members in the sand blast room of the firm's main building. Employee #1 was wearing the proper personal protective equipment and a respirator. As he was operating the sandblasting equipment, the force caused by the air pressure in the hose caused him to fall backward inadvertently. When this happened, he released the pneumatic dead man device with his finger. The dead man pneumatic switch was manufactured by Schmidt. It was located at the end of a 40-foot-long (12-meter-long) hose. The aggregate abrasive copper slag continued to be ejected from the nozzle for approximately 5 seconds. The slag struck Employee #1 in his left leg. He sustained tissue burn to his left leg. He was transported by management to a High Desert Medical Group facility and then transferred to Antelope Valley Hospital in Lancaster, CA, where he was admitted and underwent surgery. The causal factors of the accident were that the employee lost his balance and inadvertently pointed the nozzle at his leg, directing the abrasive material at his leg. During an inspection on October 5, 2012, the following details of the equipment involved were noted. The sandblaster operated at an air pressure of up to 125 psi (860 kilopascals). It was supplied by a Model Number 375 Ingersoll Rand air compressor with a working air pressure of 110 psi (760 kilopascals). During an inspection on October 5, 2012, the compressor's working air pressure of 110 psi (760 kilopascals) dropped to 90 psi (620 kilopascals) when the sandblaster was engaged. The slag was aggregate sharpshot 20/50 copper slag abrasive, approved for use in an AQMD Bullard Model Bullard 88VXBT sandblasting hood. The firm had two sandblasting hoods. GFB Instrumentation equipment supplied air to sand blasting hood ABL-4021. The dust mask in use was a 3M Brand 8511 white dust mask that met the NIOSH TC-84A-1299 N-95 standard. The gloves were Tillman 750L double strap gloves. Employee #1's coveralls had been torn off and could not be located. As a result of the investigation, the compliance officer determined that no Title 8 Safety Order had been violated at the time of the incident.
Keywords: burn, abrasive blasting, metal shop, compressed air, shut-off valve, struck by, lost balance, sandblasting, leg
Employee # Inspection Age Sex Degree Nature Occupation
1 316667989 Hospitalized injury Burn/Scald(Heat) Laborers, except construction

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