caiso notification operations procedure 152 posting affected party review market participants please assure notification forwarded respective operating departments notification operating procedure update following new revised iso operating procedures implemented posted reference iso website iso operating procedure posted 152 huntington beach power plants 1 4 split bus operation version 1 0 effective date 8 16 2001 procedure purpose previously inactive huntington beach units 3 4 powered scheduled service august 2001 existing units 1 2 5 presently provide 563 mw power added powered units rated 220 mw achieve total plant capacity 1003 mw units including units 3 4 concurrently line additional stress placed 230 kv circuit breakers cbs huntington beach hinson villa park substations thereby exceeding rated interrupting capability procedure provide guidelines operation huntington beach 230 kv buses order reduce short circuit duty contribution huntington beach units changes reasons see attached please find http wwwl caiso com thegrid operations opsdoc index html appropriate operating procedure section heading questions please e mail procedure control desk mailbox mailto procctrldesk caiso com respond soon possible thank operations support training