[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: 30CFR22.11]



[Page 144]

 

                       TITLE 30--MINERAL RESOURCES

 

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

 

PART 22_PORTABLE METHANE DETECTORS--Table of Contents

 

Sec.  22.11  Instructions on handling future changes in design.



    All approvals are granted with the understanding that the 

manufacturer will make the detector according to the drawings submitted 

to MSHA which have been considered and included in the approval. 

Therefore, when the manufacturer desires to make any changes in the 

design, the manufacturer should first obtain MSHA's approval of the 

change. The procedure is as follows:

    (a)(1) The manufacturer must write to the Approval and Certification 

Center, Rural Route 1, Box 251, Industrial Park Road, 

Triadelphia, WV 26059, requesting an extension of the original approval 

and stating the change or changes desired. With this request, the 

manufacturer should submit a revised drawing or drawings showing changes 

in detail, together with one of each of the parts affected.

    (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) MSHA will consider the application and inspect the drawings and 

parts to determine whether it will be necessary to make any tests.

    (c) If no tests are necessary, the applicant will be advised of the 

approval or disapproval of the change by letter from MSHA.

    (d) If tests are judged necessary, the applicant will be advised of 

the material that will be required.



[Sched. 8C, Oct. 31, 1935, as amended by Supp. 1, 20 FR 2575, Apr. 19, 

1955; 43 FR 12315, Mar. 24, 1978; 52 FR 17514, May 8, 1987; 60 FR 35694, 

July 11, 1995; 68 FR 36420, June 17, 2003]