jounee SUPPORT JOHNSTON ATOLL F &S NO. 0304C USER TITLE Inter-Island Power Distribution System STRUCTURE FACILITY NO. JTF SCIENTIFIC STATION NO. None gop None FOD FUNDING AGENCY AEC ($000) ENGR PROC CONST TOTAL PRE-GO Prior Cost 29.2 660.9 690. 1* TOTAL 29.2 660.9 690. 1s FURN COMPLETED DESCRIPTION The inter-island power distribution system (completed in 1968) distributes power at 4160 volts from Johnston Island to Akau, Hikina and Sand Islands. This system utilizes 500 MCM, 5 kv submarine cable to form a closed loop tie-in from the power plant at Johnston Island to each of the above islands. Two feeders are provided from the Johnston Island power plant. Feeder Number 9 is routed through Sand Island to Hikina Island. Feeder Number 10 is routed to Akau Island. Feeder Number 9/10 inter-connects Hikina and Akau to complete the loop. The loop tie-in arrangement described above provides 100 percent power backup at Hikina and Akau Islands. One of the 300 kw generators previously located on Johnston Island has been installed on Hikina Island which provides additional power backup. DRAWINGS: 91-084-Cl1 thru C4 91-084-S1 91-084-E1 thru E5 JS 91-084-C100 thru C103 “Does not include cost for Sand Island Power Distribution (see F&S No. 3-19 0304G). VOL I