MASSEY FERGUSON MF 7700 Operator's Manual page 29

5. Management System Review: Management is required to review the management system to ensure
its suitability, adequacy and effectiveness. This cycle includes provisions for exposure monitoring and
the monitoring of control measure performance. It is the responsibility of the manager of the safety and
health program to determine how worker exposure to air contaminants and other hazards are to be
controlled. It is also the responsibility of this manager to take whatever actions are needed to control
work-place hazards. This includes but is not limited to exposure assessment, audits of varies programs
such respiratory protection, ventilation system maintenance, etc.
Limitations of Cabs Used in Hazardous Environments:
While it may seem that respiration (breathing) exposure would present the greatest risk for personal
exposure to contaminants, this is not the case when working with pesticides. The most prevalent method
of exposure for applicators and those working around agricultural pesticides is through dermal (skin)
contact.
Dermal contact with contaminants may occur directly from air-borne contaminants. It may also happen
when contaminants are transferred from one object to another or when air-borne contaminants settle on
objects that are subsequently contacted. Any surfaces in or out of the cab that have been contaminated
are potential hazards for dermal exposure.
Within the cab, seats, upholstery, controls and other surfaces that become contaminated will pose such a
hazard. In addition to dermal exposure, a contaminated cab interior will also pose a respiration hazard as
the contaminant may, after settling on a surface, become air-borne once again whereby it may be inhaled.
Recirculation filters can be used to help reduce these contaminates from the cab interior air space. When a
vehicle is operated in an environment where air-born contaminants exist, the cab can be an effective
engineering control for reduction of exposure risk to persons within it.
In order for a cab to be used for this purpose, it must be of appropriate design. It must also be
manufactured, maintained, tested and operated according to the specific requirements defined by
evaluation of the hazards.
No cab should ever be considered an effective engineering control unless it has been qualified as such
within a comprehensive OHSMS. While the cab manufacturer can design and manufacture a cab to
physical specifications, the cab manufacturer can not qualify the cab as an appropriate engineering control
for any specific application.
Site-specific information is needed to evaluate the appropriateness of control measures. To use the cab to
control hazards, the managers of the OHSMS must carefully consider and evaluate the effectiveness of all
engineering controls in their specific application.
The Cab as an Engineering Control
The engineering control requirements of the respiratory protection regulation may be fulfilled by the
application of a cab, but this can only be done properly within an OHSMS. Elements of such a program are:
1. Assessment of the hazard with identification of the risk involved.
2. A survey of the machine and the cab involved in the hazardous operation.
3. Reviewing the cab ventilation system and the filter to ensure the filter provides the reduction in
contaminants required.
4. Defining how long the filter can be used in this application.
5. Testing the cab ventilation system to ensure it provides the protection required for the operation to be
performed. This also includes a review of any monitoring equipment to ensure it is working properly.
6. Repair and/or replacement of any defects or defective equipment found.
7. Retesting of the cab air system as required.
8. Recording in the appropriate log book all information regarding the test results, and repairs and
replacement of parts and/or components.
9. Assessment of the effectiveness of the program at a specified time in the cycle of the activity.
MF 7700 - Operation
ACT0020750
2. Safety instructions and safety points - Warranty
29