Chapter 12: w88 casino Ventilation

Revised January 2025

Use of w88 casino Hoods

General w88 casino room ventilation is designed to provide heating and cooling to the w88 casino. General room ventilation does not effectively control personnel exposures to hazardous levels of airborne chemicals. Consequently, w88 casino hoods are required to contain chemical vapors and gases at the emission source. w88 casino hoods are the most important control for protecting w88 casino workers from chemical exposure.

All chemicals, especially toxic and/or flammable chemicals, should be handled in a w88 casino hood whenever it is reasonable to do so. Chemicals that have high acute toxicity or which are carcinogens or reproductive toxins must be handled in a w88 casino hood, except for situations where the risk is low (such as operations involving small quantities or very low likelihood of inhalation exposure). As a general guide, chemicals meeting thedefinition of “toxic,”or which have an exposure limit less than 50 ppm (or 0.25 mg/m3 for airborne particulate), should be used in a w88 casino hood or other containment device that effectively controls exposures.

Guidelines for w88 casino Hood Users

w88 casino hoods are designed to contain vapor and gases; however, the hood airflow must compete against external air currents and turbulent internal airflow to achieve effective containment. The following guidelines are good practices that will facilitate effective containment of contaminants.

  • Verify sufficient inward airflow before using a w88 casino.
    • For hoods with an air velocity monitor, check the monitor. Alternatively, a strip of lightweight paper (such as a Kimwipe) or a piece of yarn should be readily pulled inward when held at the face of the w88 casino.
  • Operations that involve heating or volatilizingperchloric acidmust be conducted in special perchloric acid hoods. These hoods contain water spray systems to wash down the interior of the w88 casino, ducting, fan, and exhaust stack to prevent accumulation of explosive perchlorate crystalline material.Currently there are no approved perchloric acids hoods on the University campus. Therefore, operations involving heating or volatilizing perchloric acid are prohibited at The w88 casino, Reno.
  • When possible, position the hood sash such that the glass is between the worker (especially the face) and the w88 casino source. Close the hood sash when not working in the hood.
  • Avoid rapid movements at the face of the w88 casino, as they tend to create competing air currents and reduce the ability of the w88 casino to contain air contaminants.
  • Keep w88 casino sources and equipment at least six inches behind the face of the hood.
  • Minimize equipment placed in the w88 casino to avoid dead air spaces and/or eddies.
  • Equipment used in hoods should be placed on blocks to allow air to flow under and around the equipment.

Evaluation of w88 casino Hood Performance

EH&S performs w88 casino hood evaluations to ensure that ventilation performance measures are being met. This normally consists of a face velocity measurement and a visual evaluation of the hood’s ability to capture and contain visual smoke.

  • EH&S performs w88 casino hood performance evaluations at least on an annual basis.
    • w88 casino hood performance should also be evaluated following any maintenance, repair, or modification that could affect ventilation performance.
  • After each successful w88 casino performance evaluation, a sticker with a red arrow on it is affixed at the side of the w88 casino opening corresponding to a sash height of 16”. This sticker lists the average face velocity of that w88 casino and the date when the next evaluation is due.
    • If the w88 casino evaluation indicates that the w88 casino ventilation is not adequate a “Do Not Use” sticker is placed on the front of the sash and EH&S will submit a work request for repair of the w88 casino.Do not use a w88 casino that has been labeled as “Do Not Use.”
  • If a w88 casino hood has not been evaluated within the past 12 months (or if the due date is within less than a month) contact the CHO or the EH&S Dept. to request an evaluation of the hood.
  • A face velocity of 80-120 fpm is recommended for most w88 casino hoods. A face velocity outside of this recommended range should be approved for specific use by EH&S.
  • Consult with EH&S and Facilities Maintenance before making any change to a ventilation system (w88 casino hood or general room ventilation), or for assistance with unique experimental set-ups.
  • Do not use lab hoods to "dispose" of chemicals by evaporation unless the vapors are trapped and recovered for proper waste disposal.

Repair and Maintenance of w88 casino Hoods

  • If a w88 casino hood or other w88 casino ventilation device is operating but does not seem to have adequate or normal air flow, call the Chemical Hygiene Officer or call the EH&S Department at (775) 327-5040 and request an evaluation.
  • Also notify the Chemical Hygiene Officer or call the EH&S Department if a w88 casino hood or other w88 casino ventilation device is inoperable or needs repair (e.g., a broken sash).

w88 casino Hood Failure

In the event of a hood failure during w88 casino use:

  • Turn off power to all apparatus in the w88 casino.
  • Stabilize the w88 casino source as much as possible to minimize release. Cover w88 casino containers if it is safe to do so (do not cover containers that may develop internal pressure).
  • Close w88 casino sash.
  • Notify other occupants of the w88 casino.
  • Notify the w88 casino supervisor and/or the department office and call Facilities Maintenance at 784-8020 to report the problem. Also report the issue to the EH&S Department by calling (775) 327-5040.
  • If hazardous chemicals are released from the w88 casino in a quantity that presents an immediate fire hazard or high health hazard, evacuate the area and call Reno City emergency responders at 911. Call EH&S at (775) 327-5040 (24-hour contact number) if the released material presents a lower risk scenario (no fire hazard and/or lower health hazard). SeeChapter 19: w88 casino games login Responsefor additional information on emergency response actions.

Additional Information

Chapter 13: Personal Protective Equipment