October 9, 2015
Kyushu Electric Power Company

Sendai Nuclear Power Station Unit 2: Plant status(Weekly report)
Operations

This week results (Fri, Oct 2 – Thu, Oct 8)[Main process] The primary system (reactor system) Oct 6, 7 CV leak rate test performed
 Oct 8 Multiple functional tests performedThe secondary system (turbine system) Cleanup is continuing[Test and inspections] Pre-service inspection
 Oct 7, 8 Inspection associated with the quality management methodOperator’s self-inspection (periodical equipment inspection items)
 Oct 2 Class 1 component in-service inspection
 Oct 6,7 CV leak rate test

Operational Safety inspection
 Oct 8 Inspection on severe accident trainings finished (Started on Sep 29)
 Oct 8 Inspection associated with the reactor startup started

Next week plans (Fri, Oct 9 – Thu, Oct 15)[Main process] The primary system (reactor system) Multiple functional tests
 RCS heat-up and pressurizing
 Reactor start-up (On Oct 14 or later, depending on the preparation progress)
 Core physics tests
The secondary system (turbine system) Cleanup will continue[Test and inspections] Operator’s self-inspection (periodical equipment inspection items)
 Oct 9 Reactor auxiliary cooling system functional test Oct 9 ECCS functional test Oct 9 CV safety system functional test Oct 9 Emergency DG functional test Oct 10, 13 Class 1 components in-service inspection
 Oct 11 MSSV functional test Oct 11-13 Class 2 components in-service inspection
 Oct 13 Pressurizer relief valve leak test Oct 13 Auxiliary feedwater system functional test Oct 14* CRDM functional test

Operational Safety inspection
 Inspection associated with the reactor startup*The planned tests and inspections on Oct 14 and later are subject to change due to the reactor start-up.
Translated by JANSI: For the original text, please go to: http://www.kyuden.co.jp/var/rev0/0048/8188/news_2_151009.pdf

Oct 9, 2015

Sendai Unit 2: Restart operation process
Sep 11▼

Sep 13▼

Sep 24▼

Fuelloading

Sep 29
▼

100%

Oct 8
▼

RCS* leak
test

Constant operation at
rated thermal output

Functional tests*Reactor coolant system

Sep 17▼

Sep 24▼

Reactorassembling

Oct 7
▼

Sep 30▼Core physicstests

CV leak ratetest▽Reactor start-up

The above test periods include preparations

Sep 19 Sep 22▼ ▼condenser vacuum up▽Restart of power generation(Connecting to the grid)

Steam may be released during studying
water chemistry in the secondary system

The secondary system cleanup
Oct 7, 8▼Pre-service inspection on the quality control method

Oct 2Process▼Class 1 component in-service inspection
Oct 6, 7▼CV leak rate test
Oct 9

▽Reactor auxiliary cooling system functional test, ECCS functionaltest, CV safety system test, Emergency DG test
Oct 10, 13▽Class 1 components in-service inspection
Oct 11▽MSSV functional test
Oct 11-13▽Class 2 components functional test
*The planned tests and inspections on Oct 14 andlater are subject to change due to the reactor start-up.

Oct 13▽Pressurizer relief valve leak test, Auxiliary feedwater system test
Oct 14*

Sep 29▼▽CRDM test
▼ Operational safety inspection (severe accident training)

Oct 8

Oct 8 onwards▼Operational safety inspection (Reactor startup)
Translated by JANSI: For the original text, please go to: http://www.kyuden.co.jp/var/rev0/0048/8188/news_2_151009.pdf