TNAG-1658-FCO40-2306-Daya-Bay-nuclear-power-station-project-safety-concerns-in-Ho-1987 — Page 55

P.11

GNPJỤC SHENZHEN

65709

P.11

NOV 16" '87 11:59 TIB(OOU) HK GOVT

1997-11-04

18:17

2

The conclusions of the re-check of the first layer are as follows :

Preparation of Bars

(1) The preparation of bars (ie. the cutting and bending) takes place

the away from

construction area. It is

is performed against liste prepared from Edy information sheets and does not require the use of needed (thereby the design drawings to determine the number of bars removing the possibility that the drawings may be misinterpreted at the number this stage). The details of the various types of bar and prepared are recorded a "Rebar Delivery Order" which accompanies "tagged" The bars themselves are the bars to the constructión area. to enable them to be checked against the delivery orders.

од

(2) For the first layer of the raft, the records from the preparation of

that all bara were correctly cut the bars confirm

and bent and

transferred to the construction area.

(3) After concrete placement the 316 omitted starter bars were located. No other bars which were preparad for the first layar but not installed were found.

Installation of Vertical Bars

(4) All the locations for each segment where vertical bara protrude from from the 316 the raft (8,076 in total) have been checked and, apart omitted starter bars,

bars, there are bars installed in all cases. are a few discrepancies as follows:

·

There

locations ara 4. few

CH away

In a small number of cases the bar from the precise coordinates on the drawings,

of the raft

In the outer addition to those shown on the drawings.

there are 255 bars installed in

·

In 20 locations 32 mm bars have been used in place of 25 mm 6 locations 25 mm bars in place of 32 mm.

and in

The EdF

.J

EdF designers have since reviewed the "as built” status and have confirmed that there is no consequence to the design.

A full explanation of the origin of these bars is given in the end of this appendix.

Installation of Horizontal Bars

note at

(5) Thera

are

adequate

photographic

records taken

during

the

correct There is

reinforcement of the central area of the raft to

the to verify installation of 100% of the horizontal bara in this area. further verification from QC checks made both by HCCM and JVC.