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Bulletin 79-13: Cracking in Feedwater System Piping

… 17, 1977, during heat-up for hot functional testing of Diablo Canyon Unit 1, a leak was discovered in the vessel … of "stress assisted corrosion." The cracking experienced at Diablo Canyon, D. C. Cook and San Onofre would appear to …

Event Notification Report for December 24, 2003

… issue closed. Power Reactor Event Number: 40408 Facility: DIABLO CANYON Region: 4 State: CA Unit: [1] [2] [ ] RX Type: [1] … San Simeon, CA or approximately 35 miles Northwest of the Diablo Canyon site. * * * UPDATE ON 12/23/03 @ 1526 BY …

Event Notification Report for June 26, 2013

… Iridium-192." Power Reactor Event Number: 49148 Facility: DIABLO CANYON Region: 4 State: CA Unit: [1] [ ] [ ] RX Type: [1] … PDT, plant personnel identified a through-wall leak in a Diablo Canyon Power Plant Unit 1 socket weld inside …

Commission Orders for 2015

… 50-255-LA CLI-15-21 PACIFIC GAS AND ELECTRIC COMPANY (Diablo Canyon Nuclear Power Plant, Units 1 and 2) 11/09/2015 … 3) 52-017-COL CLI-15-14 PACIFIC GAS & ELECTRIC COMPANY (Diablo Canyon Power Plant, Units 1 and 2) 05/21/2015 50-275 …

Event Notification Report for September 25, 2014

… RETRACTED !!!!! Power Reactor Event Number: 50334 Facility: DIABLO CANYON Region: 4 State: CA Unit: [1] [2] [ ] RX Type: [1] … Event Text UNANALYZED CONDITION "On 07/31/2014 at 1729 PDT, Diablo Canyon Power Plant (DCPP) identified an unanalyzed …

Event Notification Report for December 19, 2012

… in May 2011. Power Reactor Event Number: 48600 Facility: DIABLO CANYON Region: 4 State: CA Unit: [1] [ ] [ ] RX Type: [1] … notification. At 1804 PST on December 17, 2012, Diablo Canyon Unit 1 experienced a loss of plant vent …

Event Notification Report for December 18, 2012

… Power Reactor Event Number: 48600 Facility: DIABLO CANYON Region: 4 State: CA Unit: [1] [ ] [ ] RX Type: [1] … notification. At 1804 PST on December 17, 2012, Diablo Canyon Unit 1 experienced a loss of plant vent …