MSHA - Code of Federal Regulations - 30 CFR 74.11
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MSHA - Title 30 CFR
30 CFR § 74.11
Tests of the continuous personal dust monitor.

    (a) Applicant testing. The applicant shall conduct tests to determine whether a CPDM that is submitted for approval under these regulations meets the requirements specified in § § 74.7–
74.8 of this part, with the exception of durability testing, which shall be conducted by NIOSH as specified in § 74.7(g) of this part. Applicant testing shall be performed by an independent testing entity approved by NIOSH.
    (b) NIOSH testing assistance. NIOSH will provide consultation to the applicant to identify and secure necessary testing services for meeting the requirements specified in § § 74.7–
74.8 of this part. Applicants must submit testing protocols to NIOSH prior to testing to verify that the testing protocols adequately address the requirements.
    (c) Reporting of applicant testing results. The applicant shall include the results from testing specified under paragraph (a) of this section when submitting the application under § 74.13 of this part to NIOSH.
    (d) Intrinsic safety testing. The applicant shall submit the CPDM to MSHA for testing and evaluation, pursuant to 30 CFR 18.68, to determine whether the electronic components of the CPDM submitted for approval meet the applicable permissibility provisions.