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::b) Type 5 is a residual fuel oil for burner installations equipped with limited preheating facilities that require a fuel oil of lower viscosity than Type 6.<br>
 
::b) Type 5 is a residual fuel oil for burner installations equipped with limited preheating facilities that require a fuel oil of lower viscosity than Type 6.<br>
 
::c) Type 6 is a high-viscosity residual fuel oil for use in burners equipped with preheating facilities to handle such fuels.<br>
 
::c) Type 6 is a high-viscosity residual fuel oil for use in burners equipped with preheating facilities to handle such fuels.<br>
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<br>
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See[[CGSB_ONGC/003_0002_2019_ENG#Annex B|Annex B]] for regulations that apply to heating fuel oil <br>
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The testing and evaluation of a product against this standard may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this standard has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any applicable regulatory requirements prior to its use.<br>
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<br>
 
<h2> Normative references</h2>
 
<h2> Normative references</h2>
 
The following normative documents contain provisions that, through reference in this text, constitute provisions of this National Standard of Canada. The referenced documents may be obtained from the sources noted below.<br>
 
The following normative documents contain provisions that, through reference in this text, constitute provisions of this National Standard of Canada. The referenced documents may be obtained from the sources noted below.<br>
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An undated reference is to the latest edition or revision of the reference or document in question, unless otherwise specified by the authority applying this standard. A dated reference is to the specified revision or edition of the reference or document in question. <br>  
 
An undated reference is to the latest edition or revision of the reference or document in question, unless otherwise specified by the authority applying this standard. A dated reference is to the specified revision or edition of the reference or document in question. <br>  
 
See [[CGSB_ONGC/003_0002_2019_ENG#Annex B|Annex B]] for regulations that apply to heating fuel oil.<br>
 
See [[CGSB_ONGC/003_0002_2019_ENG#Annex B|Annex B]] for regulations that apply to heating fuel oil.<br>
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The testing and evaluation of a product against this standard may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this standard has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any applicable regulatory requirements prior to its use.<br>
      
<h3>Canadian General Standards Board (CGSB)</h3>
 
<h3>Canadian General Standards Board (CGSB)</h3>