CAT/OP/CRI/CSPRO/1 and the Manual of General Technical Provisions on Human Security and Fire Safety, which has a chapter on prisons. Due consideration also was paid to international standards, including the United Nations Standard Minimum Rules for the Treatment of Prisoners (the Nelson Mandela Rules), the recommendations of the Conference of Ministers of Justice of the Ibero-American Countries, the International Committee of the Red Cross guidance on water, sanitation, hygiene and habitat in prisons and the United Nations Office for Project Services Technical Guidelines for Prison Planning, as well as other current design standards. 70. The methodology comprises technical guidelines based on scientific and mathematical criteria developed by the architects and engineers at the Department of Architecture. The process for identifying accommodation spaces was certified by the Federal Association of Engineers and Architects of Costa Rica and the methodology was presented to and approved by the International Committee of the Red Cross during a visit that took place in February 2019. 71. The amount of floor space per prisoner and the number of bunk beds that can be installed in an accommodation space depend not only on the internal measurements of the space but also on engineering criteria such as wheelchair turning radiuses and the tangent used to calculate the distance between emergency exits, which must be determined using computer modelling. 72. Thanks to this work, the Ministry now has exact information on the real capacity of each prison and, using the same methodology, has determined that 12,828 places are available in other facilities in the closed system, including the comprehensive care centres, the comprehensive rehabilitation units and the Zurquí prison training centre. For more details regarding the space available in each facility, see letter No. ARQ-0634 of 20 July 2020, which is attached to the present report. 73. According to projections made by the Research and Statistics Unit of the Ministry of Justice and Peace, significant increases in imprisonment rates, and therefore overcrowding, are expected. The prison administration is therefore working hard to gradually improve the existing infrastructure in addition to starting new construction projects. 74. The required planning will be achieved through the Central Infrastructure Plan, which is currently in the final stage of development and is expected to be completed this year. This Plan covers the main improvements planned over the next 10 years. Human security will be one of the key indicators. As an example of the above, negotiations are currently under way with the Central American Bank for Economic Integration for a loan to cover 17 infrastructure projects, including plans to purchase six electrical power hook-up systems and install them in prison buildings. 75. As part of the Central Infrastructure Plan, the prison administration will: • Gather detailed information about the current state of all buildings and infrastructure under its control and establish a list of priority projects • Establish an estimate of the amount of new spaces that will be required in the medium term (10 years) • Identify and prioritize the infrastructure projects needed to develop the various types of support provided to persons subject to custodial and non-custodial measures • Move forward with projects currently in planning or under way to meet maintenance and construction needs • Establish new projects and measures to meet the infrastructure needs of the national prison system • Establish medium-term budgetary and operational plans for projects to meet the infrastructure needs of the national prison system • Register projects in the Public Project Bank of the Ministry of Planning and Economic Policy and thus incorporate them into the Ministry’s operational plans, which will facilitate their implementation 10 GE.20-17766