Lottery Drawing Equipment
1. Lottery drawing equipment includes:
a) Lottery drawing drum(s);
b) Balls used for lottery drawing;
c) Electronic scales for checking the weight of each ball; equipment for measuring the size of each ball;
d) Camera and monitor systems to supervise the entire lottery drawing process.
2. Management requirements for lottery drawing equipment:
a) For the drawing drum(s):
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Each drawing drum must have a clear origin and meet the standards and technical specifications of the manufacturer’s design. The materials used must resist wear, corrosion, and external impacts.
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In addition to the number of drums used directly for each drawing as announced in the drawing rules, the lottery company must have at least one backup drum available for use when necessary.
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The lottery company must perform maintenance on the drums at least once a year. Maintenance must not alter the operating principles or technical specifications of the drums. Maintenance activities must be recorded and managed in a maintenance log.
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Each drum must be checked for proper operation before use. The inspection must be conducted in the presence of and certified by the Lottery Supervision Council.
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After each drawing session, the drum or the area where the drum is placed must be sealed to ensure no external interference.
b) For the balls:
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The balls used for lottery drawing must be made of uniform material, weight, and size. The permissible tolerances for each ball are as follows:
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Weight: The deviation must not exceed 5% of the standard weight of each ball;
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Size: The deviation must not exceed 5% of the standard diameter of each ball.
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Balls must be arranged in sets (each set containing 10 balls numbered from 0 to 9). Each set must be stored in a separate container to prevent friction and wear. The containers must be sealed after each drawing session.
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Each lottery company must maintain at least twice the number of ball sets actually used in each drawing session.
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Every six months, the lottery company must inspect the weight and size of each ball used in the drawing. Balls that fail to meet technical standards must be discarded. Ball inspections conducted before each drawing session must be witnessed and certified by the Lottery Supervision Council.
c) For electronic scales and ball size measurement equipment:
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The electronic scales must be highly accurate, stable in operation, and registered for quality standards with a competent state authority or verified and certified by the standards and metrology agency. The size measurement equipment must be capable of verifying the allowable dimensional deviation for each ball.
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The electronic scales and ball size measurement equipment must be sealed for preservation after each use and must be replaced promptly when their service life expires or when they fail to meet the required accuracy standards.
d) For the camera and monitoring system used to supervise the lottery drawing process:
The camera and monitor system must be arranged to ensure full supervision of the entire drawing process, especially the selection of balls, loading them into the drum, spinning, and picking the winning balls. The recorded footage must be stored for at least 60 days from the date of the drawing.
(Legal basis: Article 25 of Circular No. 75/2013/TT-BTC guiding detailed regulations on lottery business operations)
