3. Operators of refrigeration and air conditioning equipment or heat pumps, or fire protection systems, including their circuits, which contain ozone-depleting substances listed in Annex I shall ensure that stationary equipment or systems:
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(a)
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with a fluid charge of 3 kg or more but less than 30 kg of ozone-depleting substances listed in Annex I are checked for leaks at least once every 12 months, with the exception of equipment with hermetically sealed systems which are labelled as such and contain less than 6 kg of ozone-depleting substances listed in Annex I;
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(b)
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with a fluid charge of 30 kg or more but less than 300 kg of ozone-depleting substances listed in Annex I are checked for leaks at least once every 6 months;
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(c)
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with a fluid charge of 300 kg or more of ozone-depleting substances listed in Annex I are checked for leaks at least once every 3 months.
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