[Code of Federal Regulations]

[Title 30, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 30CFR33.12]



[Page 166]

 

                       TITLE 30--MINERAL RESOURCES

 

  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR

 

PART 33_DUST COLLECTORS FOR USE IN CONNECTION WITH ROCK DRILLING IN COAL 

MINES--Table of Contents

 

                      Subpart A_General Provisions

 

Sec.  33.12  Changes after certification.



    If an applicant desires to change any feature of a certified unit or 

system, he shall first obtain MSHA's approval of the change, pursuant to 

the following procedure:

    (a)(1) Application shall be made as for an original certificate, 

requesting that the existing certification be extended to cover the 

proposed changes, and shall be accompanied by drawings, specifications, 

and related data showing the changes in detail.

    (2) Where the applicant for approval has used an independent 

laboratory under part 6 of this chapter to perform, in whole or in part, 

the necessary testing and evaluation for approval of changes to an 

approved product under this part, the applicant must provide to MSHA as 

part of the approval application:

    (i) Written evidence of the laboratory's independence and current 

recognition by a laboratory accrediting organization;

    (ii) Complete technical explanation of how the product complies with 

each requirement in the applicable MSHA product approval requirements;

    (iii) Identification of components or features of the product that 

are critical to the safety of the product; and

    (iv) All documentation, including drawings and specifications, as 

submitted to the independent laboratory by the applicant and as required 

by this part.

    (b) The application will be examined by MSHA to determine whether 

inspection and testing will be required. Testing will be necessary if 

there is a possibility that the modification may affect adversely the 

performance of the unit or system. MSHA will inform the applicant 

whether such testing is required and the components or materials to be 

submitted for that purpose.

    (c) If the proposed modification meets the requirements of this part 

and Part 18 of Subchapter D of this chapter (Bureau of Mines Schedule 2, 

revised, the current revision of which is Schedule 2F) if applicable, a 

formal extension of certification will be issued, accompanied by a list 

of new and corrected drawings and specifications to be added to those 

already on file as the basis for the extension of certification.



[Schedule 25B, 25 FR 6473, July 9, 1960, as amended at 52 FR 17515, May 

8, 1987; 68 FR 36422, June 17, 2003]