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Inventories
 12 Months Ended
Dec. 31, 2021
Inventories [Abstract]  
Inventories
8.Inventories
   
(a)This caption is made up as follows:

 

   2021   2020 
   S/(000)   S/(000) 
         
Goods and finished products   25,304    12,877 
Work in progress   135,008    114,246 
Raw materials   247,939    157,107 
Packages and packing   7,466    3,614 
Fuel   3,498    2,896 
Spare parts and supplies   199,870    179,354 
Inventory in transit   9,149    10,220 
    628,234    480,314 
Less - Provision for inventory obsolescence (b)   (23,052)   (19,704)
    605,182    460,610 

 

(b)Movement in the provision for inventory obsolescence value is set forth below:

 

   2021   2020   2019 
   S/(000)   S/(000)   S/(000) 
             
Opening balance   19,704    17,253    14,975 
Additions   3,374    3,635    2,498 
Recoveries   (26)   (1,184)   (220)
Final balance   23,052    19,704    17,253