鍵・カードの持ち帰りは、必要最小限（1本または1枚）とし、事前に「受領

鍵・カードの持ち帰りは、必要最小限（1本または1枚）とし、事前に「受領書兼誓約書」による申請を行い、持ち帰り運用を行うこと

Results (English) 1:

Take-away of the key card, and requires a minimum (one or one), prior to the application by "receipt and pledge"
done, to perform a take-out operation

Results (English) 2:

The minimum amount of key and card to be taken home (one or one) should be applied in advance by "Receipt/Agreement"
and take-out operations.

Results (English) 3:

The return of the key and the card is necessary minimum (one or one), and an application by "receipt and pledge" beforehand
The act of carrying out and taking out operations