8/2/2019 Fukushima Daiichi Status Update – April 04 - 0830 - Pages from ML12037A103 - FOIA PA-2011-0118, FOIA PA-2011-0119 & FOIA PA 2011-0120 - Resp 41 - Partial - Group DDD Pa…

http://slidepdf.com/reader/full/fukushima-daiichi-status-update-april-04-0830-pages-from-ml12037a103 1/2

IUnit Fukushima Daiichi Status Summary - 0830 EDT 0414/2011 - Update PriorityNo.

400 assemblies-damaged; RP V pres: (ch A=29.44ý_psig, ch B=71.2 ,psig) (TEPCO 4/4); RP V level: -1/2 TA F (NISA 4/3);

fresh water inject. 26.4 gpm•, (TEPCo 4/4) via fire ext. line using temp. elect. pump (IAEA 4/2); Vessel temp: Btm Head

113.40C+-+, FW nozzle: 243.10C4., (TEPCO 4/4), On offsite AC power - CR Lighting for U-1, 2, 3 & 4 (JAIF 4/1); instr pw r on

for U-1, 2 & 4 (IAEA 3/29);

1 Primary: damage suspected, slow leakage. D/w pressure: 7.8,ipsig (TEPCo 4/4) D/w 3830 rem/hr (TEPCo 4/4). Losing

Containment 10-30% drywell volume/day (Site Team 4/2) Torus press. 8.5 psig (TEPCo 4/4) Torus: 1340 rem/hrl, (TEPCo 4/4).Secondary: severe damage from H, explosion.

SF Pool 292 bundles (GEH); Temp: 100C (3/31 0815JST USFJ), LVL: unconfirmed, Periodic spray using pumper (DOE 4/3)

548 assemblies - damaged; RPV pres: -16.0l, psig (NISA 4/4); RP V level: 2/3 TA F (IAEA 4/3); freshwater injection 35.2

Core gpm+-+ (NISA 4/3) via fire ext. line using temp. elect pump (IAEA 4/2) Vessel temp: Btm Head 137oCt (Site Team 3/31),

FW nozzle 140.30C (NISA 4/4), On offsite AC power (NISA 4/3)

2 Containment Primary: damage suspected. D/w pressure .53 +-,psig (TEPCo 4/4) 3340 rem/hrl, (TEPCo 4/4) Torus: 91 rem/hr4, 2

(TEPCo 4/4) Secondary: panels removed from side of Rx bldg reducing H2 build-up.

SF Pool 587 bundles (GEH); Temp: 48.OOC (TEPCO 4/4); Level: full, fresh water injection continues (DOE 4/3)

548 assemblies - damaged; RP V pressure: -113.0,4, psig (TEPCo 4/4); RPV level: - 2/5 TA F (IAEA 4/3) Rad levels indicate

Core fuel covered (site team); freshwater injection 30.8 gpm4., (TEPCo 4/4) via fire ext. line using temp. elect pump (IAEA 4/2)

Vessel temp: Btm Head 114.1°Ct ; FW nozzle: 89.80C1• (TEPCo 4/4). On offsite AC power (NISA 4/3).

3 Containment Primary: RST suspects failure. D/w pressure: 0.82 psig, Torus press. 10.7 psig (TEPCo 4/4). 2150 rem/hrJ,, Torus: 87 3

rem/hr4l, (TEPCo 4/4) Secondary: severe damage from H2 explosion.

SIF Pool 514 bundles (GEH) - damage suspected (JAIF 3/28); Temp: 56C (JAIF, 4/3); Level: fresh water spray periodically (DOE

4/3).

4 SF Pool 1331 bundles in SFP (GEH &NISA) Temp & Level: 42 C (JAIF 4/3). On offsite AC power (DOE 4/3). Secondary contain. 4severe damage-H2 explosion

Core 548 assemblies - no damage; RPV intact; temp 29.90CL, (TEPCo 4/4); Cold shutdown at 1430 JDT 3/20 (NISA); Offsite AC

5 power supplying house loads (IAEA 3/28) injection via normal make-up water (IAEA 3/31); 5SF Pool 946 bundles (JAIF); Temp: 36.1 0C'I (TEPCo 4/4); Cooling capability recovered (JAIF 4/1)

764 assemblies - no damage; RPV intact; Temp 48.0 0Ct (TEPCo 4/4); Cooling using RHR; Cold shutdown at 1927 JDT

6 3/20 (NISA); offsite AC power to house loads (IAEA 3/28); injection via normal make-up water (IAEA 3/31); 6

SF Pool 876 bundles (GEH); Temp: 21.50°4, (TEPCo 4/4); Cooling capability recovered (JAIF 4/1)

Common SF Pool 6,000 bundles (GEH) maintained at 32.0°C4, (TEPCo 4/4); normal cooling started 1805 JDT 3/24/2011 (NISA) 7

Notes

8/2/2019 Fukushima Daiichi Status Update – April 04 - 0830 - Pages from ML12037A103 - FOIA PA-2011-0118, FOIA PA-2011-0119 & FOIA PA 2011-0120 - Resp 41 - Partial - Group DDD Pa…

http://slidepdf.com/reader/full/fukushima-daiichi-status-update-april-04-0830-pages-from-ml12037a103 2/2

Summary Sheet Notes:Basis for Assigned Priority to Units

PRIORITY 1 - Unit 1, maintaining containment is high priority

PRIORITY 2 - Unit 2, containment damaged

PRIORITY 3 - Unit 3, Primary containment may be intact. However,

flooding in turbine building contains 1-131

PRIORITY 4 - Unit 4, du e to the condition of its spent fuel pool

PRIORITY 5 - Unit 5, Higher priority, temperature is 37 C (increased

slightlv) vs. 22 C in Unit 6. Difference not significant. Coolingbeing maintained.

PRIORITY 6 - Unit 6, SPF cooling being maintained

Common SFP is low priority, adequately maintained.