ANSI ITSDF B56.9-2019 pdf free download – SAFETY STANDARD FOR OPERATOR CONTROLLED INDUSTRIAL TOW TRACTORS.
1 sCOPE
This Standard defines the safety requirements relating to the elements of design, operation, and maintenanceof operator controlled industrial tow tractors up to and including 66750 N (15,00o io) maximum rated drawbar pulof a non-braked load.
2 PURPOSE
The purpose of this Standard is to promote safety in the design, construction, application, operation, andmaintenance of operator controlled industrial tow tractors.
This Standard may be used as a guide by governmental authorities desiring to formulate safety rules andregulations. This Standard is also intended for voluntary use by others associated with the manufacture or use ofoperator controlled industrial tow tractors.
3 INTERPRETATION
3.1 Mandatory and Advisory Roles
To carry out the provisions of this Standard, all items in Parts ll l, and appendices are mandatory exceptthose including the word should, which are recommendations.
3.2 Classification of Approved Tow Tractors
The word approved means the classification or listing of tow tractors as to fire, explosion, and electric shockhazard by a nationally recognized testing laboratory，i.e., a laboratory qualified and equipped to conductexaminations and testis such as those prescribed by Underwriters Laboratories，Inc. and Factory MutualResearch Corp.
3.3 Requests for Interpretation
The B56 Committee will render an interpretation of any requirement of this Standard. Interpretations will berendered only in response to a written request sent to the Secretary of the B56 Committee,ITSDF. The requestfor interpretation shall be in the following format.
Subject:
Cite the applicable paragraph number(s) and provide a concise description.
Edition:
Cite the applicable edition of the pertinent standard for which the interpretation is beingrequested.
Question:
Phrase the question as a request for an interpretation of a specific requirement suitable forgeneral understanding and use, not as a request for approval of a proprietary design or situation.the inquirer may also include any plans or drawings，which are necessary to explain thequestion; however, they should not contain proprietary names or information.
ITSDF procedures provide for reconsideration of any interpretation when or if additional information,whichmight affect an interpretation is available. Further，persons aggrieved by an interpretation may appeal to thecognizant lTSDF Committee or Subcommittee.ITSDF does not “approve,” “certify,””rate,” or “endorse” any item,construction, proprietary device, or activity.
3.4 Metric Conversions
The values stated in metric units are to be regarded as the standard. U.S. customary units are maintained in the User’s section (in parenthesis) as information for those not familiar with metric units. The conversion to U.S.customary is a direct (hard) conversion from the SI units.
4 GENERAL SAFETY PRACTICES4.1 Introduction
4.1.1 Part ll contains broad safety standards applicable to tow tractor operation.Only authorized operatorstrained to adhere strictly to the operating instructions stated in Section 5 shall be permitted to operate towtractors.
4.1.2 Unusual operating conditions may require additional safety precautions and special operatinginstructions.
4.1.3 Supervision is an essential element in the safe operation of powered industrial trucks.4.2 Modifications, Nameplates,Marking, and Capacity
4.2.1 Except as provided in paragraph 4.2.2, no modification or alterations to an operator controlled industrialtow tractor, which may affect the capacity, stability, or safe operation of the tow tractor, shall be made without theprior written approval of the original tow tractor manufacturer or its successor thereof. When the tow tractormanufacturer or its successor approve a modification or alteration, appropriate changes shall be made to capacityplates, decals, tags, and operation and maintenance manuals.
4.2.2 lf the tow tractor manufacturer is no longer in business and there is no successor to the business, theuser may arrange for a modification or alteration to a operator controlled industrial tow tractor, provided howeverthe user
(a) arranges for a modification or alteration to be designed, tested and implemented by an engineer(s) expertin tow tractor and their safety;
(b) maintains a permanent record of the design, test(s), and implementation of the modification or alteration;(makes appropriate changes to the capacity plate(s), decals, tags and operation and maintenance manual;(d) affixes a permanent and readily visible label on the truck stating the manner in which the tow tractor hasbeen modified or altered together with the date of the modification or alteration, and the name of the organizationthat accomplished the tasks.ANSI ITSDF B56.9 pdf download.