Chapter V-J. Reservation of the Eucharist

276. Every encouragement should be given to the practice of eucharistic reservation in a chapel suited to the faithful's private adoration and prayer. [87] If this is impossible because of the structure of the church, the sacrament should be reserved at an altar or elsewhere, in keeping with local custom, and in a part of the church that is worthy and properly adorned. [88]

277. The Eucharist is to be reserved in a single, solid, immovable tabernacle that is opaque and is locked in such a way as to provide every possible security against the danger of desecration. Thus as a rule there should be only one tabernacle in each church. [89]