1 / 15

LABORATORY ELECTRICAL SAFETY

LABORATORY ELECTRICAL SAFETY. Discussion topics: Electrical shock hazards Identifying hazards Research apparatus/ systems Proper emergency procedures Electricalfor Labs Rev.9-2000.ppt. Electrical Shock Hazards. Primary Hazards Electrical shock Flash burns Secondary Hazards

walter
Télécharger la présentation

LABORATORY ELECTRICAL SAFETY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LABORATORYELECTRICAL SAFETY • Discussion topics: • Electrical shock hazards • Identifying hazards • Research apparatus/ systems • Proper emergency procedures • Electricalfor Labs Rev.9-2000.ppt

  2. Electrical Shock Hazards • Primary Hazards • Electrical shock • Flash burns • Secondary Hazards • Fall from heights • Injury from mechanical hazards • Burns from electrical fire

  3. Even Low Voltages Can Kill! Severity of shock depends on: • Current flowing through body • Duration of current flow through body • Pathof current through body Ex: Hand contact w/ 120V (hand-to-hand pathway) I = 120V / 2000 ohms = 0.06 amperes = 60 mA (w/ wet hands, resistance is decreased)

  4. Effects of Electrical Current Reference: Lawrence Livermore National Laboratory-- Document HS5220-W

  5. Identifying Hazards:Outlets, Facility Wiring • Avoid overloading electrical outlets • Ensure to guard from exposed wiring or energized parts • Label all circuit-breaker switches • Leave at least 36” clearance in front of electrical panels • Ensure proper use of extension cords • NEVER repair/ modify facility electrical wiring • Contact a qualified licensed electrician to perform work.

  6. Identifying Hazards:Laboratory Equipment • Inspect tools/ equipment before use • Protective measures: • 3-prong plugs • Double insulation on handheld tools • GFCI-type outlets • For any tools/ appliances that generate heat (soldering irons, hot plates, etc.), unplug when not in use

  7. Research Apparatus/ Systems:Design Safety • Incorporate into the design: • Protective devices • Proper grounding • Proper equipment enclosures • Warning signs and labels • Systems safety design should be reviewed and approved by a qualified professional.

  8. Research Apparatus/ Systems:Working with Electrical Systems Only knowledgeable and qualified persons shall work on electrical circuits/systems BASIC RULES: • Properly de-energize systems before starting work (should include lockout and tag) • Never work alone • Resist “hurry-up” pressures • Know local emergency procedures

  9. Research Apparatus/ Systems:High Hazard Operations Personnel involved in a high hazard operation must use safe work procedures (a written safety procedure is required,SOP*). High hazard operations include, but are not limited to work involving: • Energized circuits • Higher voltage systems (> 240 V) • Capacitors (>10 J stored at > 50V) (*Standard Operating Procedure)

  10. Response to Electrical Shock • Protect yourself • Call 9-911 • Warn others of hazard • Shut off power immediately • Move victim to safety if safe to do so • Give necessary first aid IF TRAINED • Notify supervisor

  11. Electrical Fire • Don’t use water or touch burning objects • If possible, unplug or turn off power • Activate fire alarm and call 9-911 • If small fire and within your ability, use CO2 or ABC fire extinguisher to put out. • Ensure that personnel have taken fire extinguisher training from EH&S-- Fire Safety Program (723-0609)

  12. Basic Electrical Safety Tips • Understand the hazards of your task. • Understand the equipment and circuit functions. • Make sure that you are trained to perform the task. • Don’t be afraid to ask for help.

  13. Remember • Even low voltages will kill • Electricity does not discriminate-- Even the most experienced are at risk! • For more information, contact EH&S– • Occupational Health & Safety Program: • 725-3209 • lsteng@forsythe • Stanford Fire Marshal’s Office • 723-0609 • jleung@stanford.edu

More Related