Mínimum criteria in deprivation of liberty care and receive specific training on matters such as inter-cultural communication, interaction with detainees and the prevention of ill-treatment. 120. It is considered essential for the authorities to provide social and cultural assistance services at CIE, as contemplated in article 15 of the Regulation on the operation and interior system of CIE. 121. The presence of female personnel should be ensured at custody facilities where women are deprived of liberty. The presence of female and male personnel, as contemplated by the CPT in paragraph 23 of its 10th General Report, may have a beneficial effect as regards both the values of the custody and the encouragement of a level of normality at the place of detention. Mixed personnel also permits an appropriate workforce to face tasks in which gender is a determining factor, such as bodily searches. 122. It is appreciated that the Regulation on the operation and internal system of CIE establishes the possibility of separation of inmates who have been convicted or who have a criminal record, from others who are inmates due to their mere unlawful stay in Spain, as repeatedly claimed by the NPM, although such separation has not yet been put into practice. 123. It is a matter of concern that the devices used to close cells/dorms, observed in most CIE, do not enable their fast opening in emergencies, which should be corrected. 124. A washing machine and a drying machine should be acquired at CIE lacking these appliances, for inmates not to find themselves obliged to wash their own clothes and hang them in the outdoor yards, in their dormitories or in the toilets, and for them to be able to keep the most elementary standards of hygiene and cleanliness in the clothes, taking into account the time they may remain at the centre, and the fact that the new regulation establishes, among the duties of the inmates, that they must keep adequate standards of personal care and hygiene. Clothes hung to dry at the courtyard of the CIE of Murcia 63