laboratory fume hoods in accordance with title 8 ccr section 5154.1, ventilation requirements for...

Laboratory Fume Hoods

In accordance with Title 8 CCR Section 5154.1,

Ventilation Requirements for Laboratory-Type Hood Operations.

California State University Fresno

CSU Fresno, Environmental Health & Safety

(559) 278 - 7422

IntroductionPurpose of a Laboratory Fume Hood

Laboratory Fume Hoods help prevent exposure to fumes, vapors and particulate matter from hazardous substances.

IntroductionFunctions of a Laboratory Fume Hood

Fume hoods draw airflow inward, away from the worker.

Operator QualificationsTraining Requirements To operate a fume hood, one

must be trained to: Use the hood properly and

safely. Determine last performance test,

and if requirements are met. Understand the general hood

purpose, airflow characteristics, and potential for turbulent airflow and escape of hazardous substances from the hood.

Know where the quantitative airflow monitor or alarm system is located on the hood and how it is used to indicate an inward airflow during hood operation

8 CCR 5154.1(f)(3)

Pre-Use InspectionOverview

Check for last inspection date by EHS. Postings or signs should be present when a fume

hood is out of order and EHS is aware. If you suspect your hood is not working contact EHS immediately at 278-7422.

Check quantitative airflow monitoring device to ensure hood is working properly.

Use qualitative methods to ensure air is flowing in the proper direction.

Pre-Use InspectionDetermining last inspection Each fume hood must have

inspection record indicating: Last date of inspection. Initials of the last inspector

of the device. Whether the device passed

or failed inspection. This data sheet is normally

attached to the fume hood. Units that fail an inspection

are tagged with a “Do Not Use” sign with a date the unit was taken out of service.

Units must be re-inspected: Annually. After any repair. Following any addition of large

equipment to the unit.

Pre-Use InspectionQuantitative Monitoring Devices

A hood user must quantitatively identify whether their fume hood is working properly. The method must measure an exact or approximate rate of inward airflow.

Acceptable devices to determine quantitative airflow include: Inclined Manometers Diaphragm Pressure Gauges Vane Gauges An Airflow Alarm System is also acceptable, granted that the

“system provides an audible or visual alarm when the airflow decreases to less than 80% of the airflow required by subsection” 8 CCR 5154.1(e)(3)(A)

All values indicated on the device should be no less then those indicated on the certified“safe level” indicated by the label on the fumehood.

Pre-Use InspectionExamples of Quantitative Monitoring Devices

Vaneometer

Rare on campus, but acceptable.

Inclined Manometer

This device is very common on campus.

Diaphragm Pressure Gauge Rare on

campus, but acceptable.


Fume Hood Alarm Device

Alerts the user if there is inadequate inward airflow Visually Audibly

These units should have a visual aid of some sort indicating that the unit is functioning and is safe to use.


If you do not have a working qualitative method to assess if the fume hood is functioning properly, contact EHS at 278-7422.

Pre-Use InspectionQualitative Inspection Methods

Examples of Qualitative Devices include: Kimwipes / Delicate

Wipes Tape Mylar Strips

The device used must demonstrate airflow is flowing inward.

Pre-Use InspectionQualitative Inspection Methods

The material used (kimwipe, mylar or tape) should be pulled in by the fume hood to indicate there is inward airflow.

The material must be tested in multiple areas where the hood is open.

If you are having trouble or do not note the inward movement of air, make sure you have remembered to turn the unit on.

Using the Fume HoodWork Practices

The sash of the fume hood may be raised completely during usage, unless marked otherwise. If marked

the hood shall be opened no further then the safe operating level, indicated by the arrows, when in use.

Using the Fume HoodWork Practices

Store non-essential chemicals and other equipment outside of the fume hood.

Keep the hood free from obstruction of large equipment whenever possible.

Storage of hazardous waste containers not related to the wastes being generated within the hood is not advised. Incompatible wastes are required to be separated and closed

during storage, except when it is necessary to add waste Do not put your face inside the fume hood when

hazardous substances are present. Always keep your face and body outside the unit when in use.

Have Concerns?When should you contact EHS with any concerns?

Annual Inspection If you note that an

inspection was not completed within one year.

Maintenance Repairs Addition of Large

Equipment Newly Installed Hoods You suspect your fume

hood is not protecting you adequately for any reason.

Training Completion Acknowledgement form Please either print out a copy of this slide or request a hard copy from your Department

Safety Coordinator or Supervisor. Please sign/date in the spaces provided, and then forward it to your Department Safety Coordinator or Supervisor.

I have read the slides presented in the Laboratory Fume Hoods

Power Point presentation and have reviewed the associated department-specific plans.

Name (Print)_________________________________________________

Signature ___________________________________________________

Department _________________________________________________

Date _____________________________

Contacting Campus Environmental Health and

SafetyFor questions and concerns, please call

California State University Fresno

Environmental Health and Safety Department at:

(559) 278 - 7422