2 edition of Guidelines for the installation of MSHA accepted ground wire monitors found in the catalog.
Guidelines for the installation of MSHA accepted ground wire monitors
Arlie B. Massey
by Mine Safety and Health Administration, U.S. Dept. of Labor in [Washington, D.C.?]
Written in English
|Statement||by Arlie B. Massey.|
|Series||Informational report -- no. 1241., Informational report (United States. Mine Safety and Health Administration) -- 1241.|
|Contributions||United States. Mine Safety and Health Administration.|
|The Physical Object|
|Pagination||i, 126 p. :|
|Number of Pages||126|
1. Q – How can this guide help me? A – This guide, entitled ^Electric Service ustomer Installation Guide _ as a means of exchanging pertinent information between Consolidated Edison Co. (hereafter referred to as ^ on Edison _) and its customers, architects, electricians, engineers, builder, contractors and municipal inspectors. 2. a guide to product selection and is believed to be reliable. All printing errors are subject to correction † Mine Safety and Health Administration flame test requirements and accepted for listing by MSHA. Mining Mining Cable Product Constructions.
Tesla is the internationally accepted scientific term. Since most environmental EMF exposures involve magnetic fields that are only a fraction of a tesla or a gauss, these are commonly measured in units of microtesla (µT) or milligauss (mG). To convert a measurement from microtesla (µT) to milligauss (mG), multiply by That is, 1 µT = 10 mG. Mine power feeder (MPF) cables typically have voltage ratings of 5, 8, 15 or 25 kV and are available with or without a ground check conductor. A ground check (GC) conductoris a separate insulated ground wire that is used to monitor the “health” of the normal ground wire. MPF cables are .
b. If more than one pour is necessary, terminate each pour in a vertical plane and install inch 3/4-reinforcing rod dowels extending into concrete on both sides of joint near corners of 18 inches envelope. 3. Pouring Concrete: Spade concrete carefully during pours to prevent voids under and between conduits and at exterior surface of envelope. Standard Interpretations are letters or memos written in response to public inquiries or field office inquiries regarding how some aspect of or terminology in an OSHA standard or regulation is to be interpreted and enforced by the Agency.
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Guidelines for the installation of MSHA accepted ground wire monitors [Massey, Arlie B.] on *FREE* shipping on qualifying offers. Guidelines for the installation of MSHA accepted ground wire monitorsAuthor: Arlie B. Massey. Get this from a library.
Guidelines for the installation of MSHA accepted ground wire monitors. [Arlie B Massey; United States. Mine Safety and Health Administration.] -- These guidelines have been assembled in an attempt to assist inspectors in determining whether ground wire monitors are.
The pilot wire and ground wire must be connected to the equipment frames by separat e connectors. Low Voltage Monitoring Systems 1. The ground monitor must trip the circuit breaker when the pilot wire is broken at the extreme end of the circuit.
The ground monitor must trip the breaker whe n either the ground wire is broken at any pointFile Size: 38KB. The ground wire monitor system and associated documentation will be reviewed and a list of tests required will be developed during MSHA’s fee estimate.
The manufacturer will be informed of the tests which will be conducted by MSHA. One production type ground wire monitor system shall be File Size: KB. The ground wire monitor shall cause the circuit protective devices to operate when the grounding conductor is broken. MSHA wants to make certain that in the event of a broken grounding conductor, the circuit protective devices operate, thus preventing a death or serious injury to a Conductors in fixed installation, such as in rigid conduit.
Mine Safety and Health Administration Ground Check Monitors for Underground Power Systems: Early MSHA Informational Report: IR () Double Insulated Drill Tests IC () Guide for the Construction of Driven-rod Ground Beds IC () Guide to Substation Grounding and Bonding for Mine Power Systems.
Section (a) of the Federal Mine Safety and Health Act of (Mine Act), Public Lawas amended by Public Law[30 U.S.C. § (a)], directs the Secretary of Labor to make inspections of underground and surface coal mines in their entirety.
Federal regulations require the approval or certification of certain mining products for use in underground coal and gassy underground metal mines. Technical experts from MSHA’s Approval and Certification Center (A&CC) evaluate and test equipment, instruments, and materials for compliance.
Products evaluated and tested range from small electronic devices to large mining. MSHA is responsible for enforcing the Federal Mine Safety and Health Act of (Mine Act) as amended by the MINER Act of The Mine Act gives the Secretary of Labor authority to develop, promulgate, and revise health or safety standards for the protection of.
The MSHA and CSA requires a ground conductor monitoring system for movable equipiment in mining application. I can't seem to find in either codes any details in the type of ground conductor monitoring. An impendance monitoring system seems to meet the requirements, however this type of system won't detect parallel return ground paths.
Mine Safety and Health Administration 12th St S Suite Arlington, VA TTY Administers the provisions of the Federal Mine Safety and Health Act of and enforces compliance with mandatory safety and health standards as a means to eliminate fatal accidents; to reduce the frequency and severity of nonfatal accidents; to minimize health hazards; and to promote improved safety and health conditions in the Nation's mines.
The in-line insulator, if used, should be at least 8 feet fromthe ground, according to the National Electrical Safety Code, A guy wire connected to a pole butt ground which is not connectedto the system ground would be an example of noncompliance withthis Section.
These monitors are of a fail-safe design and have been in use in mines for several years. Although ground wire monitors are not required by the metal/nonmetal regulations, they can be used to comply w 56 requirements.
They should primarily be used to monitor the trailing cable ground wire connected to portable mining. The DC resistance of a wire applies only at very low frequencies and is directly proportional to its length.
For example, the resistance of 10 feet of #12 gauge wire is about Ù. The inductance of a wire is nearly independent of its diameter (gauge) but is directly. industry accepted guidelines, codes, and standards. Use the information within this Handbook at your own risk.
Littelfuse is Committed to Safety Littelfuse has a continuing commitment to improved electrical safety and system protection. As the leader in circuit protection, Littelfuse offers a variety of products and. metal, perforated metal, expanded metal, or heavy wire mesh are more satisfactory than those of other materials.
Moving machine parts may be guarded in a number of ways, sev-eral of which may be satisfactory. The selection of a guarding method to be used may depend upon a. every electric wire in your plant – whether it’s in a motor, generator, cable, switch, transformer, etc.
– is carefully covered with some form of electrical insulation. The wire itself is usually copper or aluminum, which is known to be a good conductor of the electric current that powers your equipment. The. Standard Guide for Safety, Access Rights, Construction, Liability, and Risk Management for Optical Fiber Networks in Existing Sewers: F - 03() Standard Practice for Selection of Gravity Sewers Suitable for Installation of Optical Fiber Cable and Conduits: F - 05().
Contact the manufacturer or dealer and request the proper terminals, bolts, washers, and nuts. Order a terminal device that crimps on the end of the conductor and terminates on the terminal. Install a short lead wire on the terminal and splice it to the circuit conductors.
6. Check cover, fill, protection, and allowances for ground movement on underground conductors and raceways. and Table 7. Verify that electrical raceways and cable trays are used exclusively for electrical conductors. 1 1/14/14 PM.NFPA's family of codes and standards that deal with electrical issues - including NFPA 70®, National Electrical Code® (NEC®), NFPA 70B, Recommended Practice for Electrical Equipment Maintenance, and NFPA 70E, Standard for Electrical Safety in the Workplace, reflect changing industry needs and evolving technologies, supported by research and development, and practical experience.GRADE E, F fire resistant and anti-static - mostly for ENCLOSED ABOVE GROUND USE GRADE K fire retardant and anti-static - meets MSHA 2G and ISO requirements 6.
Resists most oils however resistance may vary greatly depending on the type of oil. 7. May have poor resistance to oils with low aniline points.
If in doubt, contact FENNER DUNLOP.