30 CFR § 18.82 Permit to use experimental electric face equipment in a gassy mine or tunnel.
(a)Application for permit. An application for a permit
to use experimental electric face equipment in a gassy mine or tunnel will be
considered only when submitted by the user of the equipment. The user shall submit a written application to the Assistant Secretary of Labor for Mine Safety and Health, 1100 Wilson
Blvd., Room 2322, Arlington, Virginia 22209-3939, and send a copy to
the U.S. Department of Labor, Mine Safety and Health Administration,
Approval and Certification Center, 765 Technology Drive, Triadelphia,
(b)Requirements--(1) Constructional. (i)
Experimental equipment shall be so constructed that it will not constitute a
fire or explosion hazard.
(ii) Enclosures designed as explosion-proof, unless
already certified, or components of previously approved (permissible)
machines, shall be submitted to MSHA for inspection and test and shall meet
the applicable design requirements of Subpart B of this part. Components
designed as intrinsically safe also shall be submitted to MSHA for
(iii) MSHA may, at its discretion, waive the
requirements for detailed drawings of component parts, inspections, and tests
provided satisfactory evidence is submitted that an enclosure has been
certified, or otherwise accepted by a reputable testing agency whose
standards are substantially equivalent to those set forth in Subpart B of
(2)Specifications. The specifications for
experimental equipment shall include a layout drawing (see Figure
1 in Appendix II) or
photograph(s) with the components, including overcurrent-protective
device(s) with setting(s) identified thereon or separately; a wiring
diagram; and descriptive material necessary to insure safe operation of the
equipment. Drawings already filed with MSHA need not be duplicated by the
applicant, but shall be properly identified.
(c)Final inspection. Unless equipment is delivered to
MSHA for investigation, the applicant shall notify Approval and Certification
Center, RR 1, Box 251, Industrial Park Road, Triadelphia, WV 26059, when and
where the experimental equipment will be ready for inspection by a
representative of MSHA before installing it on a trial basis. Such
inspection shall be completed before a permit will be issued.
(d)Issuance of permit. When the inspection discloses full
compliance with the applicable requirements of this subpart, the Assistant
Secretary will issue a permit sanctioning the operation of a single unit in a
gassy mine or tunnel, as designated in the application. If the applicant is
not the assembler of the equipment, a copy of the permit also may be sent to
(e)Duration of permit. A permit will be effective for a
period of 6 months. For a valid reason, to be stated in a written
application, the Administrator of MSHA may grant an extension of a permit for
an additional period, not exceeding 6 months. Further extension will be
granted only where, after investigation, the Assistant Secretary finds that
for reasons beyond the control of the user, it has not been possible to
complete the experiment within the period covered by the extended permit.
(f)Permit label. With the notification granting a permit,
the applicant will receive a photographic copy of a permit label bearing the
(1) Emblem of the Mine Safety and Health
(2) Permit number.
(3) Expiration date of the permit.
(4) Name of machine.
(5) Name of the user and mine or tunnel.
The applicant shall attach the photographic copy of the permit label, or
replica thereof, to the experimental equipment. If a photograph is used, a
clear plastic covering shall be provided for it.
(g)Withdrawal of permit. The Assistant Secretary may
rescind, for cause, any permit granted under this subpart.
[33 FR 4660, Mar. 19, 1968, as amended at 43 FR 12314, Mar. 24, 1978; 52 FR
17514, May 8, 1987; 60 FR 35692, July 11, 1995]