GB 18524-2016  zyxwvutsrqponmlkjihgfedcbaZXWVTSRPONMLJIHGFEDCBA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                      National Standard of the Peoples Republic of China  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                   GB 18524-2016  
                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                       National Food Safety Standard  
                                                                                                                         Hygienic Specifications for Food Irradiation Processing  
                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                        
                                                               Issued on: 2006-12-23                                         Implementation:2007-12-23  
                                                                
                                                                                                                                                                                                                                                                                                        
                                                               National Health and Family Planning Commission of the  Peoples  Republic  of China  
                                                               Issued  by:      
                                                                                                                                                                                                           China Food and Drug  Administration  
                                                                                                                                                                                                                                                                                                                    
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                                                                                                                                                                                                                                                                                                                                                                                                 GB 18524-2016  zyxwvutsrqponmlkjihgfedcbaZXWVTSRPONMLJIHGFEDCBA
                                                                                                                                                                                                                                     Preface  
                                                                                                                                                                                                                                                            
                                                      This standard replaces GB/T 18524-2001 General Technical Requirements 
                                                      for Food Irradiation.  
                                                      Compared with GB/T 18524-2001,  this standard mainly changes as follows:  
                                  -  The name of the standard is revised to National Food Safety Standard 
                                                      Hygienic Standard for Food Irradiation Processing  
                                  -  Revised the structure of  the standard;  
                                  -  Added the terms and definitions;  
                                  -  Supplemented basic  hygiene requirements and management guidelines for  
                                                      irradiation processing, personnel and records, etc.;  
                                  -  Added relevant requirements for radiation processing process control and  
                                                      radiation safety  control;  
                                  -  Added management requirements for records and documents;  
                                  -  Deleted the appendix  A in the  original standard, and relevant contents are  
                                                      included in the irradiation processing control section.  Deleted the  appendix 
                                                      B related to the  packaging materials in the original standard, and relevant  
                                                      contents are included in the packaging section.  
                                                                                                                                                                                                                                                                       
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                                                                                                                                                                                                                                                        National Food Safety Standard  
                                                                                                                                                Hygienic Specifications for Food  Irradiation Processing  
                                                                                  1 Scope  
                                                                                  This standard defines the basic hygiene requirements and management guidelines for irradiation  
                                                                                  devices, irradiation processing, personnel and records for  food irradiation processing. This standard  
                                                                                  applies to  food irradiation processing.  
                                                                                  2  Terms and definitions  
                                                                                  The terms and definitions in GB 14881- 2013 apply to this standard.  
                                                                                  2.1 Food irradiation  
                                                                                  The radiation process of inhibiting germination, delaying or promoting maturation, disinsection,  
                                                                                  disinfection,  sterilization and anti-corrosion by use  of the radiation chemistry and radiation  
                                                                                  microbiology effects produced by ionizing radiation in food.  
                                                                                  2.2 Absorbed  dose  D  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          de 
                                                                                  For any ionizing radiation, the average energy of the substance with mass dm                                                                                                                                                                                                                                                                                                                                                                                                                                                   divided by the  
                                                                                                                                                                                                                                                                                                                                                           -1                                                                                                                                                                                                                                                                                                                     -1
                                                                                  quotient of dm, i.e. D  =                                                                                                                                                        /dm, unit: J•kg  (Joule/kg), name: Gray, symbol: Gy, 1Gy = 1J•kg .  
                                                                                                                                                                                                                     
                                                                                  2.3 Dose unevenness 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                                                                                  The ratio of the maximum absorbed dose to the minimum absorbed dose within the processing load. 
                                                                                                                                                                                                                                                                   
                                                                                  2.4 Minimum effective dose 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                                                                                  When food is irradiated, the lowest dose required to achieve a certain irradiation purpose, i.e., the 
                                                                                  lower limit of the process dose. 
                                                                                  2.5 Maximum tolerant dose  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                                                                                  When food is irradiated, the maximum dose that will not adversely affect the quality and functional 
                                                                                  characteristics of food, i.e. the upper limit of process dose. 
                                                                                                                                                                                                                                                                    
                                                                                  2.6 Irradiation process dose 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                                                                                  The lower limit value of the absorbed dose range required to achieve the expected technological 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
                                                                                  purpose in food irradiation shall be greater than the lowest effective dose and the upper limit value 
                                                                                                                                                                                                                                                                                                                                                          
                                                                                  shall be less than the highest tolerated dose. 
                                                                                                                                                                                                                                    
                                                                                  2.7 Food loading mode 
                                                                                  The placement of food containers in the irradiation container. 
                                                                                                                                                                                                                                                                        
                                                                                  2.8 Installation qualification 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                                                                                  The process of obtaining evidence and documenting that the equipment has been provided and 
                                                                                                                                                                                                                                                                                                                                                                                                             
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                                                                                                                                                                                                                                                                                                                                                                                                 GB 18524-2016  zyxwvutsrqponmlkjihgfedcbaZXWVTSRPONMLJIHGFEDCBA
                                                      installed in accordance with  the instructions.  
                                                                                                                                                                                                                                                                       
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