18. 代表团提供的资料表明，2014 年，因纪律处分而受到单独监禁的平均期限是 7.45 天；但委员会仍然表示关切的是，根据《监狱规则》第 63(1)(b)条，这一措施的施用最长可达 28 天。委员会还表示关切的是，可以基于模糊的理由实施《监狱规则》第 68B 条所载的“中止与其他囚犯的交往”措施，例如“为维持秩序或纪律，或为任何囚犯的利益”，起初为期不超过 72 小时，以后可按月作出该命令，没有上限。对于机械约束手段，委员会表示遗憾的是，尽管委员会有具体要求，但中国香港没有提供资料说明使用机械约束手段的种类、平均期限和频率(第 16 条)。
Solitary confinement and use of restraints 18. Notwithstanding the information provided by the delegation that the average duration of solitary confinement as a result of disciplinary proceedings was 7.45 days in 2014, the Committee remains concerned that this measure can be imposed up to a maximum of 28 days, according to Rule 63 (1) (b) of the Prison Rules. The Committee is also concerned that the measure of “removal from association with other detainees”, contained in Rule 68B of the Prison Rules, can be imposed on vague grounds, such as “the maintenance of good order or discipline or in the interests of a prisoner”, initially for a period of not more than 72 hours, and for a further period of not more than one month, which can be renewed every month without upper limit. As regards the use of mechanical restraints, the Committee regrets the lack of information provided on the types, average duration and frequency of their use, in spite of a specific request from the Committee (art. 16).