BACK TO CATEGORIES Photo ID: 1197 (Click photo to view original size.) Category: Fire Hazard: Burned Standard Violated: 29 CFR 1910.253(b)(4)(iii Corrective Action: Separate the cylinders 20 feet apart or provide a barrier with a fire rating of at least one half hour. Description: Hazard: This is a photo of oxygen and acetylene cylinders not being properly stored.