PART 19—ELECTRIC CAP LAMPS Authority: 30 U.S.C. 957, 961. Secs. 19.1(b) and 19.7(a) also issued under 30 U.S.C. 811. Source: Schedule 6D, 4 FR 4003, Sept. 21, 1939, unless otherwise noted. § 19.1 Purpose. (a) The purpose of investigations made under this part is to promote the development of electric cap lamps that may be used in mines, especially in mines that may contain dangerous concentrations of methane. Lists of such lamps will be published from time to time in order that State mine-inspection departments, compensation bureaus, mine operators, miners, and others interested in safe equipment for mines may have information in regard to available permissible electric cap lamps. This part supersedes Schedule 6C issued under date of December 21, 1935, and goes into effect August 26, 1939. (b) Any electric cap lamp that meets the requirements set forth in this part will be termed “permissible” by MSHA and, if actively marketed, will be listed as such in publications relating to permissible electric cap lamps. MSHA will test only electrical equipment that in the opinion of its qualified representatives is constructed of suitable materials, is of good quality workmanship, is based on sound engineering principles, and is safe for its intended use. MSHA reserves the right to modify design, construction, and test requirements to obtain the same degree of protection as provided by the tests described in this part. (c) Definition of permissible. Note: Paragraph (b) of this section is issued under the authority of Sec. 101 of the Federal Mine Safety and Health Act of 1977, Pub. L. 91-173 as amended by Pub. L. 95-164, 91 Stat. 1291 (30 U.S.C. 811). All other paragraphs in this section continue under the original authority. (Sec. 101, Federal Mine Safety and Health Act of 1977, 91 Stat. 1291 (30 U.S.C. 811)) [Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended by Supp. 1, 20 FR 2718, Apr. 23, 1955; 47 FR 11369, Mar. 16, 1982] § 19.2 [Reserved] § 19.3 Application procedures and requirements. (a) Before MSHA will undertake the active investigation leading to approval of any lamp, the applicant shall make application by letter for an investigation leading to approval of the lamp. This application shall be sent to: U.S. Department of Labor, Mine Safety and Health Administration, Approval and Certification Center, 765 Technology Drive, Triadelphia, WV 26059, together with the required drawings, one complete lamp, and instructions for its operation. Fees calculated in accordance with part 5 of this title shall be submitted in accordance with § 5.40. (b) 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 under this part, the applicant must provide to MSHA as part of the approval application: (1) Written evidence of the laboratory's independence and current recognition by a laboratory accrediting organization; (2) Complete technical explanation of how the product complies with each requirement in the applicable MSHA product approval requirements; (3) Identification of components or features of the product that are critical to the safety of the product; and (4) All documentation, including drawings and specifications, as submitted to the independent laboratory by the applicant and as required by this part. (c) An applicant may request testing and evaluation to non-MSHA product safety standards which have been determined by MSHA to be equivalent, under § 6.20 of this chapter, to MSHA's product approval requirements under this part. [68 FR 36419, June 17, 2003, as amended at 70 FR 46342, Aug. 9, 2005; 73 FR 52211, Sept. 9, 2008] § 19.4 Conditions governing investigations. (a) One complete lamp, with the assembly and detail drawings that show the construction of the lamp and the materials of which it is made, should be submitted at the time the application for test is made. This material should be sent prepaid to the U.S. Department of Labor, Mine Safety and Health Administration, Approval and Certification Center, 765 Technology Drive, Triadelphia, WV 26059. (b) When this lamp has been inspected by MSHA, the applicant will be notified as to the amount of material that will be required for the tests. In general, the material required will be as follows: (1) Thirty complete lamps; (2) 500 bulbs; (3) 50 feet of cord; (4) a battery discharge rack for 20 batteries; and (5) a 50-bulb rack. Specifications for items (4) and (5) will be furnished by MSHA. (c) The applicant will be notified of the date on which the tests will start and will be given an opportunity to witness them. (d) Observers at formal investigations and demonstrations. (e) Permissibility tests will not be made unless the lamp has been completely developed and is in a form that can be marketed. (f) The results of the tests shall be regarded as confidential by all present at the tests and shall not be made public in any way prior to the formal approval of the lamp by MSHA. (g) No verbal report of approval or disapproval will be made to the applicant. After MSHA has considered the results of the tests, a formal report of the approval or disapproval will be made to the applicant in writing by Approval and Certification Center. The applicant shall not advertise the lamp as being permissible or as having passed the tests prior to receipt of formal notice of approval. [Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended by Supp. 1, 20 FR 2718, Apr. 23, 1955; 43 FR 12314, Mar. 24, 1978; 60 FR 35693, July 11, 1996; 73 FR 52211, Sept. 9, 2008] § 19.5 General requirements for approval. Electric cap lamps shall be complete units. They shall be durable in construction, practical in operation, and suitable for the conditions of underground service. They shall offer no probable explosion hazard if used in gassy or dusty mine atmospheres or bodily hazard from the spilling of the battery electrolyte. They shall exhibit, under laboratory test conditions, the various minimum performance requirements specified in this part. § 19.6 Specific requirements for approval. (a) Design. 1 2 1 2 (b) Angle of light beam. (c) Light distribution, visual. (d) Light distribution, photometric. 3 3 (2) The minimum candlepower of the beam based upon readings at the design voltage of the bulb shall not be less than 1. § 19.7 Protection against explosion hazard. Unless properly designed, electric cap lamps may present two sources of probable explosion hazards: Ignition of an explosive atmosphere by the heated filament of the bulb in case the bulb glass is accidentally broken, and ignition by sparks or flashes from the battery. MSHA therefore requires the following safeguards: (a) Safety device or design. (b) Headpiece lock or seal. (c) Locks on charging terminals. (d) Protection of battery terminals. (e) Battery current restricted. 4 4 (f) It shall not be possible to obtain a difference of potential between any two accessible points of the cap lamp when assembled for use. Note: Paragraph (a) of this section is issued under the authority of Sec. 101 of the Federal Mine Safety and Health Act of 1977, Pub. L. 91-173 as amended by Pub. L. 95-164, 91 Stat. 1291 (30 U.S.C. 811). All other paragraphs in this section continue under the original authority. (Sec. 101, Federal Mine Safety and Health Act of 1977, 91 Stat. 1291 (30 U.S.C. 811)) [Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended at 47 FR 11369, Mar. 16, 1982] § 19.8 Protection against bodily hazard. This hazard is chiefly due to the possible burning of the wearer by electrolyte spilled from the battery. MSHA therefore requires that: (a) Spilling of electrolyte. (b) Corrosion of battery container. § 19.9 Performance. In addition to the general design and the safety features, MSHA considers that a lamp of permissible type should meet certain minimum requirements with respect to performance, as follows: (a) Time of burning and candlepower. (b) Bulb life. The life of a bulb having main filaments in parallel is considered ended when the first filament ceases to burn; the life of a bulb having independent main filament is considered ended when the last filament ceases to burn. (c) Bulb uniformity. (2) The current consumption of at least 94 percent of the bulbs shall not exceed the average current by more than 6 percent. The candlepower (s. cp.) of at least 90 percent of the bulbs shall not fall short of the average candlepower by more than 30 percent. (d) Corrosion of contacts. [Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended at 47 FR 11369, Mar. 16, 1982] § 19.10 Material required for MSHA records. In order that MSHA may know exactly what it has tested and approved, detailed records are kept covering each investigation. These include drawings and actual equipment, as follows: (a) Drawings. (b) Actual equipment. (2) If the lamp is approved, MSHA will require the manufacturer, as soon as his first manufactured lamps are available, to submit one complete lamp, bearing the approval plate, as a record of his commercial product. § 19.11 How approvals are granted. (a) All approvals are granted by official letter from MSHA. A lamp will be approved under this part only when the testing engineers judge that the lamp has met the requirements of the part and MSHA's records concerning the lamp are complete, including drawings from the manufacturer that show the lamp as it is to be commercially made. No verbal reports of MSHA's decisions, concerning the investigation will be given, and no informal approvals will be granted. (b) As soon as the manufacturer has received the formal approval he shall be free to advertise his lamps as permissible. [Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended by Supp. 1, 20 FR 2718, Apr. 23, 1955] § 19.12 Wording, purpose, and use of approval plate. (a) Approval plate. (b) Purpose of approval plate. (c) Use of approval plate. (d) Withdrawal of approval. [Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended at 43 FR 12314, Mar. 24, 1978] § 19.13 Instructions for handling future changes in lamp design. All approvals are granted with the understanding that the manufacturer will make his lamp according to the drawings which he has submitted to MSHA and which have been considered and included in the approval. Therefore, when he desires to make any change in the design of the lamp, he should first of all obtain MSHA's approval of the change. The procedure is as follows: (a)(1) The manufacturer shall write to the U.S. Department of Labor, Mine Safety and Health Administration, Approval and Certification Center, 765 Technology Drive, Triadelphia, WV 26059, requesting an extension of the original approval and stating the change or changes desired. With this letter the manufacturer should submit a revised drawing or drawings showing the changes in detail, and one of each of the changed lamp parts. (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. 6D, 4 FR 4003, Sept. 21, 1939, as amended by Supp. 1, 20 FR 2718, Apr. 23, 1955; 43 FR 12314, Mar. 24, 1978; 52 FR 17514, May 8, 1987; 60 FR 35693, July 11, 1995; 68 FR 36419, June 17, 2003; 73 FR 52211, Sept. 9, 2008]