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Thomas E. Bernard

Physical Agents

Thomas E. Bernard

Some of the material in this section is data and other material requires editing to be more useful. The content and links have been removed.

The following text is being held for future use.The following are analysis methods that have been developed for discussion, training and job analysis purposes. The workbooks have been prepared using Excel® . (In spite of my best efforts, there may be some format adjustments to provide frustration to users.) Most of the workbooks contain macros which must be enabled. It is up to you to trust the source. In addition, manual methods are supplied for a couple of the TLVs®.

The files are intended only for the individual who downloads them. They are copyrighted. I would appreciate an email to let me know about it.

Besides outright computational errors (no warranty), there may be some things strange to you. The workbooks represent my interpretation of the TLVs® and some additions and themes that I use in instructional activities. There are comments in many locations to facilitate use, but you are largely on your own.

These packages do not stand alone. The user is advised to read the TLV® Documentation and to take advantage of other support materials. Documentation is available from the ACGIH® (and members can download five per year at no charge).

Comments and Suggestions Are Welcome.

  • Noise - TLV® and PEL

    A-Scale, Dose
    Lp and Intensity Methods

    Performance of hearing protectors based on vendor data using the NIOSH long method.

    Noise v3.0

    Hearing Protectors v1.0

  • Radiofrequency and Microwave RadiationTLVs® for single frequency continuous exposures.

    Updates for pulsed, multiple frequency, and wideband exposures planned.

    RF/MW v3.0
    Visible and Near Infrared RadiationThree Methods1. Meter with Filter2. Meter without Filter but Knowledge of Relative Intensity3. Spectral Power Distribution

    VNIR v4.0
    (in preparation)

    Substantial changes have been made and a new package is not availalbe.

    Ultraviolet RadiationThree Methods1. Meter with Filter2. Meter without Filter but Knowledge of Relative Intensity3. Spectral Power Distribution UV Radiation v4.0

  • Hand-Arm Vibration*

    TLV® and Criterion Based Time Limits

    HAV Analysis Package v5.0

    Whole Body Vibration*

    TLV® and ISO Criterion Based Time Limits for acceleration and dose

    WBV Analysis Package v4.0

    Hand Activity Level*

    Multiple Elements

    Multiple Methods for HAL and NPF (some not in TLV®)Stand alone rating of perceived exertion scale provided for reference

    HAL v1.2

    HAL Manual Method v1.5 

    RPE Scale


    Manual Method for Manual Materials Handling

    Lifting v1.1

  • Heat Stress

    See the Occupational Heat Stress page for analysis methods based on WBGT
    Thresholds and Recovery Times

    Clothing Factors
    Estimation of WBGT

    Estimation of Metabolic Rate (3 methods) *

    Heat Stress Website