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1 Public Input No. 46-NFPA [ Global Input ] Type your content here... Make universal change from "bonding and grounding" to "bonding or grounding". While "grounding and bonding" is ok in some context it is not ok in all context because you are either doing one, or the other, not both. When stating bonding or grounding you are good in any context. This would also apply to circumstances of bond and ground to bond or ground. I find many people are confused and use these terms interchangably when discussing these actions even though both have there own destinct definition. Grounding means everything has the same static potential as earth. Bonding mean everything bonded has the same static potential. In most of the context the use of "and" can cause confusion. Related Public Inputs for This Document Related Input Public Input No. 45-NFPA [Section No ] Relationship Submitter Full Name: Glen Carter Organization: Justrite Manufacturing Company Submittal Date: Thu Feb 25 08:24:18 EST 2016 Resolution: There is no technical justification at this time for a universal change from "bonding and grounding" to "bonding or grounding", as it might lead to some unsafe conditions by leading the user of the document to believe that only bonding is necessary. However, the Committee recognizes that there are situations where either bonding or grounding is sufficient to maintain safety. The submitter is asked to submit, as Public Comments, examples of such situations for consideration by the Committee. Examples can be situations currently described in NFPA 77 or others. In the mean time, the Committee will review NFPA 77 and determine where it might be appropriate to make individual changes as suggested by the Public Input. NFPA 77 Public Inputs with Responses Page 1
2 Public Input No. 5-NFPA [ Chapter 2 ] Chapter General. Referenced Publications The documents or portions thereof listed in this chapter are referenced within this recommended practice and should be considered part of the recommendations of this document. 2.2 NFPA Publications. National Fire Protection Association, 1 Batterymarch Park, Quincy, MA NFPA 30, Flammable and Combustible Liquids Code, 2012 edition. NFPA 69, Standard on Explosion Prevention Systems, 2008 edition. NFPA 70, National Electrical Code, 2014 edition. NFPA 495, Explosive Materials Code, 2013 edition. NFPA 496, Standard for Purged and Pressurized Enclosures for Electrical Equipment, 2013 edition. NFPA 498, Standard for Safe Havens and Interchange Lots for Vehicles Transporting Explosives, 2013 edition. NFPA 654, Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids, 2013 edition. NFPA 1124, Code for the Manufacture, Transportation, Storage, and Retail Sales of Fireworks and Pyrotechnic Articles, 2013 edition. NFPA 1125, Code for the Manufacture of Model Rocket and High Power Rocket Motors, 2012 edition. 2.3 Other Publications AIChE Publications. American Institute of Chemical Engineers, 3 Park Avenue, New York, NY Britton, L. G., Using Heats of Oxidation to Evaluate Flammability Hazards, Process Safety Progress, Vol. 21, No. 1, March Britton, L. G., Using Material Data in Static Hazard Assessment, Plant/Operations Progress, April 1992, pp API Publications. American Petroleum Institute, 1220 L Street, NW, Washington, DC API RP 2003, Protection Against Ignitions Arising Out of Static, Lightning, and Stray Currents, 7th edition, NFPA 77 Public Inputs with Responses Page 2
3 ASTM Publications. ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA ASTM D 257, Standard Test Methods for DC Resistance or Conductance of Insulating Materials, ASTM E 502, Standard Test Method for Selection and Use of ASTM Standards for the Determination of Flash Point of Chemicals by Closed Cup Methods, , reapproved CENELEC CEN Publications. European Committee for Electrotechnical Standardization, Rue de Stassartstraat, 35 CENELEC Management Centre, Avenue Marnix 17, B Brussels, Belgium. BS EN , Electrical Apparatus for Use in the Presence of Combustible Dust Part 2: Test Methods; Section 2: Method for Determining the Electrical Resistivity of Dust in Layers, International Electrotechnical Commission, Brussels, 1996.CENELEC TR 50504, Electrostatics Code of Practice for the Avoidance of Hazards Due to Static Electricity, BS PD CLC/TR , Explosive Atomspheres Part 32-1: Electrostatic Hazards, Guidance, 2013, Corrigendum, (Supersedes CENELEC TR ) Elsevier Publications. Elsevier NV, Radarweg 29, Amsterdam 1043, Netherlands. Britton, L. G. and Smith, J. A., Static Hazards of the VAST, Journal of Loss Prevention in the Process Industries, Vol. 25, pp , IEC Publications. International Electrotechnical Commission, 3, rue de Varembé, P.O. Box 131, CH-1211 Geneva 20, Switzerland. IEC , Electrical apparatus for use in the presence of combustible dust Part 2: Test methods Section 3: Method for determining minimum ignition energy of dust/air mixtures, IEC , Electrostatics Part 4 4: Standard test methods for specific applications Electrostatic classification of flexible intermediate bulk containers (FIBC), IME Publications. Institute of Makers of Explosives, 1120 Nineteenth th Street, NW, Suite 310, Washington, DC Safety Library Publication No. IME SLP 3, Suggested Code of Regulations for the Manufacture, Transportation, Storage, Sale, Possession, and Use of Explosive Materials, Safety Library Publication No. IME SLP 17, Safety in the Transportation, Storage, Handling, and Use of Explosive Materials, JIS Publications. Japan Industrial Standards, Kasumigaseki, Chiyoda-ku, Tokyo , Japan. JIS B 9915, Measuring Methods for Dust Resistivity (with Parallel Electrodes), Japan Industrial Standards, Tokyo, NFPA 77 Public Inputs with Responses Page 3
4 2.3.9 U.S. Department of Defense Publications. U.S. Government Printing Office, Government Publishing Office, 732 North Capitol Street, NW, Washington, DC Standard M, Contractors' Safety Manual for Ammunition and Explosives, Standard , Ammunition and Explosive Safety Standards Other Publications. BS 5958, Code of Practice for Control of Undesirable Static Electricity, Part 1, General Considerations, British Standards Institution, London, BS PD CLC/TR , Explosive Atomspheres Part 32-1: Electrostatic Hazards, Guidance, 2013, Corrigendum, (Supersedes BS EN ) Glor, M., Electrostatic Hazards in Powder Handling, Research Studies Press, Ltd., Letchworth, Hertfordshire, England, International Safety Guide for Oil Tankers and Terminals (ISGOTT), 4th Edition, Witherby and Co., Ltd., London, 5th edition, Merriam-Webster's Collegiate Dictionary, 11th edition, Merriam-Webster, Inc., Springfield, MA, Pratt, T. H., Electrostatic Ignitions of Fires and Explosions, Burgoyne, Inc., Marietta, GA, Walmsley, H. L., Avoidance of Electrostatic Hazards in the Petroleum Industry, Journal of Electrostatics, Vol. 27, No. 1 and No. 2, Elsevier, New York, References for Extracts in Recommendations Sections. NFPA 30, Flammable and Combustible Liquids Code, 2012 edition. NFPA 654, Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids, 2013 edition. Referenced current SDO names, addresses, standard names, numbers, and editions. Related Public Inputs for This Document Related Input Public Input No. 6-NFPA [Chapter J] Relationship Submitter Full Name: Aaron Adamczyk Organization: [ Not Specified ] Submittal Date: Thu Jul 23 15:32:57 EDT 2015 NFPA 77 Public Inputs with Responses Page 4
5 Resolution: FR-1-NFPA Statement: Update references to current titles and editions. NFPA 77 Public Inputs with Responses Page 5
6 Public Input No. 44-NFPA [ Section No ] Bonding. For the purpose of controlling static electric hazards, the process of connecting two or more conductive objects together by means of a conductor so that they are at the same electrical potential, but not necessarily at the same potential static potential as the earth. Added specific terms. Related Public Inputs for This Document Related Input Public Input No. 45-NFPA [Section No ] Relationship Submitter Full Name: Glen Carter Organization: Justrite Manufacturing Company Submittal Date: Thu Feb 25 08:10:17 EST 2016 Resolution: This proposal is related to PI-46, and like it, there is no technical justification for the proposed change. NFPA 77 Public Inputs with Responses Page 6
7 Public Input No. 45-NFPA [ Section No ] Grounding. The process of bonding For the purposes of controlling static electric hazards the process of connecting one or more conductive objects together and to the ground by means of a conductor, so that all objects are at zero (0) electrical potential the same static potental as earth ; also referred to as earthing. To clarify the definition of grounding (earthing). Related Public Inputs for This Document Related Input Public Input No. 44-NFPA [Section No ] Public Input No. 46-NFPA [Global Input] Relationship Clarifying bonding vs. grounding Clarifying bonding vs. grounding Submitter Full Name: Glen Carter Organization: Justrite Manufacturing Company Submittal Date: Thu Feb 25 08:12:50 EST 2016 Resolution: This proposal is related to PI-46, and like it, there is no technical justification for the proposed change. NFPA 77 Public Inputs with Responses Page 7
8 Public Input No. 4-NFPA [ Section No [Excluding any Sub-Sections] ] Bonding is used to minimize the potential difference between conductive objects, even where the resulting system is not grounded. Grounding (i.e., earthing), on the other hand, equalizes the potential difference between the objects and the earth. Examples of bonding and grounding are illustrated in Figure Figure Bonding and Grounding A. (add definition (steps to) of pictures for bonding and grounding). 1. Top picture, first bond the fuel truck then, the forklift. 2. Middle picture, first ground the vehicles then connect to ground. 3. Bottom picture, First ground vehicles then, bond the fuel truck to the car. 4. B. Reverse the order to remove the bonding and grounding. 1. Remove bond from fuel truck then, forklift. 2. Remove ground from earth then, vehicles 3. remove bond from car then, fuel truck. Then remove ground from earth then, vehicles. It is my opinion that, Potential static discharge at the source of the greatest hazard could be reduced by grounding and bonding steps that take any potential static charge to the furthest point. If an arc were to occur it would be at the point of discharge and not at the point of potential danger (at the vehicle...) Submitter Full Name: ROBERT TRIBBIE Organization: WEST VIRGINIA STATE FIRE MAR Submittal Date: Fri Jul 17 14:48:44 EDT 2015 NFPA 77 Public Inputs with Responses Page 8
9 Resolution: The purpose of the diagrams is to provide an illustration of the concepts involved, not a sequence of connecting the bonding and grounding wires. NFPA 77 Public Inputs with Responses Page 9
10 0 Public Input No. 43-NFPA [ Section No (C) ] (C) It is emphasized that bonding the tank to the fill stem is not sufficient; a majority of recorded explosions have occurred when it was believed the tank had been adequately bonded. The electrostatic potential that is responsible for the spark exists inside the tank on the surface of the liquid and cannot be removed by bonding. Measures to reduce this charge can be one or more of the following: (1) Avoid spark promoters. Conductive objects floating on the oil surface increase the charge of sparking to the tank wall. Metal gauge rods or other objects projecting into the vapor space can create a spark gap as the rising liquid level approaches the projection. A common precaution is to require that fill pipes (downspouts) reach as close to the bottom of the tank as practicable. Any operation such as sampling, taking oil temperature, or gauging that involves lowering a conductive object through an opening into the vapor space on the oil should be deferred until at least 1 minute after flow has ceased. This will permit any surface charge to relax. (2) Reduce the static generation by one or more of the following: (3) Avoid splash filling and upward spraying of oil where bottom filling is used. (4) Employ reduced fill rates at the start of filling through downspouts, until the end of the spout is submerged. Some consider 3 ft/sec (0.9 m/sec) to be a suitable precaution. (5) Where filters are employed, provide relaxation time in the piping downstream from the filters. A relation (a) relaxation time of 30 seconds is considered by some to be a suitable precaution. (6) Eliminate the flammable mixture before switch loadings by gas freeing or inerting. [30: A ] Use of the term "relaxation" in place of "relation" avoids confusion. Submitter Full Name: Chris Blanchard Organization: Genentech Inc Submittal Date: Sun Dec 06 13:54:46 EST 2015 NFPA 77 Public Inputs with Responses Page 10
11 1 Resolution: FR-5-NFPA Statement: This is a correction to the misspelling of the word "relaxation". The extract reference has been removed because this correction has not been made to the source document. NFPA 77 Public Inputs with Responses Page 11
12 2 Public Input No. 42-NFPA [ Section No. F.3.1 ] F.3.1 Liquids that have relaxation time constants ranging from 0.36 sec down to sec (equivalent to a conductivity range between 50 ps/m and 10 4 ps/m for typical hydrocarbons having dielectric constants of about 2) are considered conductive semiconductive. Examples include crude oil and butyl acetate. This is a correction to the term "conductive". The section is about semiconductive liquids. Submitter Full Name: Chris Blanchard Organization: Genentech Inc Submittal Date: Sun Dec 06 13:33:36 EST 2015 Resolution: FR-6-NFPA Statement: This is a correction to the term "conductive". The section is about semiconductive liquids. NFPA 77 Public Inputs with Responses Page 12
13 3 Public Input No. 6-NFPA [ Chapter J ] Annex J Informational References J.1 Referenced Publications. The following documents or portions thereof are referenced within this recommended practice for informational purposes only and are thus not part of the recommendations of this document unless also listed in Chapter 2. J.1.1 NFPA Publications. National Fire Protection Association, 1 Batterymarch Park, Quincy, MA NFPA 30, Flammable and Combustible Liquids Code, 2012 edition. NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, 2012 edition. NFPA 33, Standard for Spray Application Using Flammable or Combustible Materials, 2011 edition. NFPA 53, Recommended Practice on Materials, Equipment, and Systems Used in Oxygen- Enriched Atmospheres, 2011 edition. NFPA 69, Standard on Explosion Prevention Systems, 2008 edition. NFPA 70, National Electrical Code, 2014 edition. NFPA 99, Health Care Facilities Code, 2012 edition. NFPA 302, Fire Protection Standard for Pleasure and Commercial Motor Craft, 2010 edition. NFPA 318, Standard for the Protection of Semiconductor Fabrication Facilities, 2012 edition. NFPA 326, Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair, 2010 edition. NFPA 407, Standard for Aircraft Fuel Servicing, 2012 edition. NFPA 780, Standard for the Installation of Lightning Protection Systems, 2014 edition. J.1.2 J Other Publications. AIChE Publications. American Institute of Chemical Engineers, 3 Park Avenue, New York, NY Britton, L. G., Avoiding Static Ignition Hazards in Chemical Operations, Britton, L. G., Using Material Data in Static Hazard Assessment, Plant/Operations Progress, Vol. 11, April 1992, pp Britton, L. G. and Walmsley, H. L., Static Electricity New Guidance for Storage Tank Loading Rates, Process Safety Progress, Vol. 31, No. 3, September 2012, pp NFPA 77 Public Inputs with Responses Page 13
14 4 J API Publications. American Petroleum Institute, 1220 L Street, NW, Washington, DC Bustin, W. M., et al., New Theory for Static Relaxation from High Resistivity Fuel, API Refining Division Proceedings, Vol. 44, No. 3, API RP 2003, Protection Against Ignitions Arising Out of Static, Lightning, and Stray Currents, 7th edition, September, API 2219, Safe Operation of Vacuum Trucks in the Petroleum Service, 3rd edition, 2005, reaffirmed J ASTM Publications. ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA ASTM D 257 D257, Standard Test Methods for DC Resistance or Conductance of Insulating Materials, ASTM D 991 D991, Standard Test Method for Rubber Property - Volume Resistivity of Electrically Conductive and Antistatic Products, , reapproved ASTM E 502 E502, Standard Test Method for Selection and Use of ASTM Standards for the Determination of Flash Point of Chemicals by Closed Cup Methods, 2007, reapproved ASTM F 2413 F2413, Standard Specification for Performance Requirements for Foot Protection, J CENELEC BSI Publications. European Committee for Electrotechnical Standardization (CENELEC), Rue de Stassart, 35, B Brussels, Belgium. CENELEC Technical Report CLC/TR 50404, Electrostatics - Code of Practice for the Avoidance of Hazards Due to Static Electricity, June CLC/TC 44X, Safety of Machinery: Electrotechnical Aspects. BSI Group, Worldgate Drive, Suite 800, Hendron, VA BS PD CLC/TR , Explosive Atomspheres Part 32-1: Electrostatic hazards, guidance, 2013, Corrigendum, (Supersedes CENELEC TR 50404) J NPCA A CA Publications. National Paint and Coatings American Coatings Association, 1500 Rhode Island Avenue, NW, Washington, DC Generation and Control of Static Electricity in Coatings Operations, J Other Publications. Process Safety Progress, Vol. 21, No. 1, March Britton, L. G., and Smith, J. A., Static Hazards of the VAST, Journal of Loss Prevention in the Process Industries, Vol. 25, 2012, pp , Elsevier. J.2 Informational References. (Reserved) J.3 References for Extracts in Informational Sections. (Reserved) Referenced current SDO names, addresses, standard names, numbers, and editions. Related Public Inputs for This Document NFPA 77 Public Inputs with Responses Page 14
15 5 Related Input Public Input No. 5-NFPA [Chapter 2] Relationship Referenced current SDO names, addresses, standard names, numbers, and editions. Submitter Full Name: Aaron Adamczyk Organization: [ Not Specified ] Submittal Date: Thu Jul 23 16:22:23 EDT 2015 Resolution: FR-3-NFPA Statement: Update references to current titles and editions. NFPA 77 Public Inputs with Responses Page 15
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