For purposes of this subpart:
    
    
        
        (a) 
        
            Contested order means the remedial order, interim remedial order for immediate compliance or order of disallowance being contested in proceeding pursuant to this subpart;
     
    
        
        (b) 
        
            Interim remedial order for immediate compliance means an interim remedial order for immediate compliance issued pursuant to  10 CFR 205.199D (interim remedial order of immediate compliance);
     
    
        
        (c) 
        
            Order of disallowance means an order of disallowance issued pursuant to  10 CFR 205.199E (disallowance);
     
    
        
        (d) 
        
            Participant means, as appropriate, the Secretary, the petitioner, and intervenors;
     
    
        
        (e) 
        
            Petitioner means a person who has received a remedial order, interim remedial order for immediate compliance, or order of disallowance who notifies the Secretary that he intends to contest the order;
     
    
        
        (f) 
        
            Remedial order means a remedial order issued pursuant to  10 CFR 205.199B (remedial orders);
     
    
        
        (g) 
        
            Secretary means the Secretary of Energy or his delegate.