DESCRIPTION OF FACILITY RADIATION ALARM SYSTEMnIN SPECIAL MATERIALS MACHINE SHOP, ROLLING MILL, AND SOURCE AND SPECIAL MATERIALS VAULT AT QRNL

摘要

A Facility Radiation Alarm System was installed in the Special Materials Machine Shop (Building 3044), Rolling Mill (Building 3012), and Source and Special Materials Vault (Building 3027). Instruments continuously monitor both gamma and neutron radiations (burst and dose) in the first two buildings hut only neutron radiation in the vault. The instruments and associated system components provide health physics information, sound local alarms when abnormal conditions occur, and indicate the abnormal condition on a central panel in Building 3044 and the Laboratory Emergency Control Center (Building 2500). The monitoring instruments also actuate building evacuation alarms in the machine shop and rolling mill when specific levels of radiation are reached.