METHOD STATEMENT FOR CONCRETE REPAIRING WORK

Comment Response Sheet (CRS)
Project Title

Van Phong 1 BOT Thermal Power Plant Project

Document Title

METHOD STATEMENT FOR CONCRETE
REPAIRING WORK

Document Type

For Approval

Document No

VP1-0-L4-C-GEN-10025

Returned Status

NA

Prepared by

CRS No

VP1-0-L4-C-GEN-10025-A-CRS

CRS Issued Date

13/05/2020

Engineer

Construction

Remarks

No.

Section/
Page

Owner’s Comment

Response to Comment

Review
Date

Status O/C *

1

3

Supplement item "Classification of the concrete
defects and its reason" so that can propose a
proper repair method (Voids, Honeycomb,
Scaling, Crack, Cold joint, Damaged)

Lot4 addition in revision B

13/05/2020

Closed
O

2

3

Before stepping the repair procedure for each
defect, please provide summary table as below.

Noted and addition in revision B

13/05/2020

Closed
O

3

4

It needs to be assessed if there is any other
underlying damage before the repair methods
described in this document can be applied.

Lot4 will proposal method case by case

specifically and addition in revision B

13/05/2020

4

4

The cause of the crack needs to be assessed.

Noted and addition in revision B

13/05/2020

Closed
O

5

4

Please delete the information of 40mm in all
content.

Lot4 revised in revision B

13/05/2020

Closed
O

6

4

material shall be same strength with base
concrete at least.

The material strength at least equal concrete
strength. Addition in revision B

13/05/2020

7

4

The repaired surface needs to be re-examined
after a specified amount of time to check if the
crack has reappeared.

The repair surface will re-checking after repaired
24 hour, if appear crack must be re-repair as
described in this MS (revised in revision B).

13/05/2020

L4

O

Closed

Closed
O

O
Closed

Page 1 of 3


Comment Response Sheet (CRS)
8

5

Not agreed since consider the material strength in
case air void is serious.

Lot4 change material as revision B

13/05/2020

Closed
O

9

5

Cement slurry will make crack due to strong
shrinkage, recommend to use Sika Refit 2000 or
cement mortar with Sika latex.

Lot4 will use Sika Refit 2000 or GPS mota 16

13/05/2020

Closed
O

10

5

Specify maximum depth of chipping for which this
treatment can be applied.

Maximum depth of chipping for this treatment is
20mm.

13/05/2020

Closed
O

11

6

Specify maximum depth of chipping for which this
treatment can be applied. What will be done if the
reinforcement bars are reached/exposed?

Maximum depth of chipping for this treatment is
50mm.

13/05/2020

Closed
O

12

6

Before apply Monotop R, recommend to use Monotop

Lot4 revised in revision B

13/05/2020

Closed
O

610 as primer layer.
13

6

Before any remedial measure the cause of the
crack needs to be assessed.

Lot4 revised in revision B

13/05/2020

O
Closed

14

7

Missing method to repair crack for the floor for
example in building floor when through crack.

Base on assessed actual reason and width of
crack Lot4 will propose method for case by case
specification.

13/05/2020

15

8

Water leak test is needed after treatment. Please
add

Lot4 revised in revision B

13/05/2020

16

11

Supplement repair method for Scaling concrete,
Cold joint and Damaged.

Lot4 added in revision B

13/05/2020

Closed
O

17

11

It needs to be checked if the reinforcement bars
have moved so that they might be closer to the
repaired surface than the prescribed cover.
Unsuitable placement of reinforcement might
require more extensive repair including complete
removal and reconstruction.

Lot4 noted and addition in revision B

13/05/2020

O

Closed
O

Closed
O

Closed

Page 2 of 3


Comment Response Sheet (CRS)

Additional Notes (if any)
* O - Open, C – Closed

Page 3 of 3


AP

APPROVED
Approved

AC

APPROVED WITH COMMENT
Contractor to revise the correction and resubmit

NA

NOT APPROVED
Revise the correction and resubmit before proceeding

RE

REVIEWED
Information acknowledged with no comment
For Approval

RC

REVIEWED WITH COMMENT
Information acknowledged with comments

Note: Approval or comment does not relieve the Contractor of
all obligations covered under contract

Discipline: Civil
30 May 20
Date:

B

20-May-2020

For Approval

J.H CHOI

K.S KIM

D.H Jeong

A

08-May-2020

For Approval

J.H CHOI

K.S KIM

D.H Jeong

REV

DATE

DESCRIPTION

Approved

Checked

Prepared

OWNER

VAN PHONG POWER COMPANY LIMITED
PROJECT

Van Phong 1 BOT Thermal Power Plant Project
Status
□Approved
□Approved with Comment
□Not Approved
□Reviewed

OWNER’S ENGINEER
Pöyry Switzerland Ltd.
EPC CONTRACTORS

IHI–TESSC–CTCI–DHI CONSORTIUM

PROJECT DOCUMENT No

REV

VP1-0-L4-C-GEN-10025

B

DOCUMENT TITLE

METHOD STATEMENT FOR CONCRETE REPAIRING WORK
EPC

EPC DOCUMENT No.
VP1-0-L4-C-GEN-10025

Doosan Heavy Industries and Construction

REV
B


B



B


B


Revise material according
to item 5.1; 5.2

B


B

B




B



B


B