Laserfiche WebLink
N. FIELD SAMPLING FOR HEALTH AND SAFETY <br /> 1 . The following instruments will remain at the job and be continuously employed <br /> by a qualified person: <br /> ♦ HZS chemical reagent diffusion tube indicator or direct reading instrument. <br /> Oxygen analyzer. <br /> CGA (methane analyzer). <br /> 2. CGAs and other electronic portable monitoring instruments should be rated <br /> explosion-proof or intrinsically safe. It is also recommended that they be <br /> Factory Mutual rated. <br /> 3. It is important that any site always be initially characterized so that correct <br /> information can be available to make appropriate decisions about personnel <br /> exposure safety. <br /> 4. To accomplish Item 3, a gas sample should be collected prior to the beginning <br /> of work or as soon as possible, and should be analyzed for volatile organic <br /> chemicals. If historical information or preliminary field screening indicate a <br /> need, the sample should also be analyzed for heavy metals capable of <br /> volatilizing, acid gases, and other inorganic compounds. Proper instructions <br /> and close coordination with the laboratory are important to properly <br /> characterize the gas. Several composite samples will provide a more uniform <br /> representation of LFG at the site. Several non-composited samples, may <br /> however, provide a better indication of peak concentrations and show <br /> chemicals which would not be indicated in the composite samples. <br /> 5. Monitoring for vinyl chloride, benzene, or other constituent chemicals may also <br /> need to be conducted during drilling operations. A written record of monitoring <br /> should be maintained daily. <br /> O. RESPIRATORY PROTECTION <br /> 1 . All employees who may be required to wear respirators shall be trained in the <br /> proper use of respirators. Such individuals will have an appropriate physical <br /> examination for use of respirators. Each individual will be approved by a <br /> qualified physician for such respirator use. All personnel who wear respirators i <br /> shall come under the jurisdiction of their employer's written respiratory <br /> protection program, and will follow and be knowledgeable about the program. <br /> Personnel will be individually fit-tested wearing their assigned respirator. Fit- <br /> 1:22 <br />