Annual Report 2014 of the National Preventive Mechanism 343. Rooms prepared for mechanical restraints with psychiatric belts for episodes of disturbance or aggressiveness should have video-surveillance systems with recording available, be free of metal edges that could pose physical risk to patients, have natural lighting, have an adequate temperature and, in general, encourage a calm environment for the inmate. One member of personnel should always be present to maintain the therapeutic purpose and afford the patient due assistance, pursuant to paragraph 50 of the 16th General Report of the CPT (CPT/Inf (2006) 35). Room adequate for mechanical restraint at the Residence Santa Teresa de Arévalo, at Arévalo (Avila) 344. Centres should have a protocol for the prevention and detection of cohabitation problems. Personnel should receive training on peaceful dispute resolution and action in crises and oral and non-oral techniques, to abort incipient episodes of aggressiveness without need to adopt measures of restraint. 345. When for security reasons the rooms have to be searched for potentially hazardous objects or non-authorised belongings, the searches should be carried out in the presence of the inmate and with his cooperation, to prevent a feeling of defencelessness and violation of privacy that the contrary practice may imply. 346. Injury report forms should be established conforming to the Recommendations of the Ombudsman set out in the report of the NPM on Injury reports on people deprived of their liberty and, where the medical services assist a person who was injured due to a possible aggressions, it should be completed and sent to the court authority as contemplated in said report. 347. Rooms should have call or alarm systems or alternative systems for those cases in which the immediate assistance of personnel to inmates is required. 348. The physical conditions of the centres should be focused on the treatment and wellbeing of the inmates and to create a positive therapeutic environment, pursuant to paragraph 34 of the 8th General Report (CPT/Inf (98) 12). The facilities require special care as regards their maintenance and security and health and safety conditions. The health, safety, risk prevention and emergency rules should be 112