Issue link: https://www.e-digitaleditions.com/i/1132978
July/August/September 2019 I 35 control system proximity credential readers. The exciters and credential readers may need to be installed at a pre- determined distance apart from each other. This needs to be documented and the spacing verified during testing. Documentation needs to answer many questions that may arise during integration, as well as including a description of operation when a credential is presented while a wrist band is in the door area. If this individual is trained to prevent the infant abduction or wanderer from eloping, should the door unlatch? Does the indi- vidual need to enter a code on a card reader or keypad in addition to presenting an authorized credential to unlatch the door? Is an alarm required if an individual loiters too long near the door? Is a separate keypad required on both sides of the door to override the at-risk human perimeter system? Delayed egress integration is frequently required in addition to access control and at-risk human perimeter systems. The AHJ needs to be consulted for the codes and to verify if these doors must release when the sprinkler alarm or fire detection and alarm system are activated. Automatic doors are more difficult to use with supervised care elopement prevention and infant abduction prevention policies and may require more inputs and outputs on the automatic door controller. Common functionality (or common sequence of operations) calls for the at-risk human perimeter system to shunt motion sensors, push pads, and credential readers to prevent the automatic door from opening when a wrist band is in the area. • Code Blue Some healthcare facilities desire the access control system to unlock crucial doors in an emergency situation described as a code blue. This allows faster response times to critically ill patients by medical personnel. The access control system needs to be integrated and tested with the nurse call system code blue alert. • Healthcare Annunciation In health care, it is important that care providers are promptly notified of events. The access control system may need to send notifications to the nurse call system for annunciation. The systems will need to be annun- ciation tested with all devices used by care providers, which can include nurse call appliances, radios, pagers, and devices handling text and email. • Special Locking In some detention centers and facilities that care for people with Alzheimer's and dementia-related diseases, the AHJ may allow doors to be locked in the path of egress because the danger from inmates and patients escaping is greater than the risk of having access- controlled egress doors. The following criteria often must be included in the access control design: • Loss of power to the portion of the access control system that locks the doors shall automatically result in the doors being unlocked. • Activation of the building automatic sprinkler or fire detection and alarm system shall automatically unlock the doors. The doors shall remain unlocked until the fire alarm system has been reset. Most delayed egress devices do not automatically reengage and require local manual reactivation. • Doors can be unlocked from a manual device controlled by staff. • A manual unlocking device shall be provided at the fire command center. Many standards for commissioning recommend that the individual leading the commissioning process is independent of the design team and the construction team.