ACT TAPE 100 SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the new facilities installed on the ground. |
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No. KA-S-101 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Applicable SSPC Spec. : SSPC-SP2 / SSPC-SP3 |
Hand Tool : |
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- Choose between SSPC-SP3 and SSPC-SP2 at the state of metal surface . |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Remove oil , wax and other foreign matter from the surface . |
Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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2 |
Under coating |
Act 100 -Primer |
Apply two coats of primer at intervals one hour. |
Brush, Roller |
Apply the primer uniformly. |
- Primer consumption per a coat : 0.25Kg /u |
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Allow one hour drying time. |
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3 |
Tape wrapping |
Act 100 -Tape |
Wrap the tape with 55% overlap. |
Hand-work |
In case of sticking , stick the |
Tape sticking |
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tape with applying the primer. |
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Allow one hour drying time. |
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4 |
Intermediate coat |
Act 100 -Primer |
Apply one coat of primer . |
Brush , Roller |
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- Primer consumption per a coat : 0.25Kg /u |
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Take a time adequately to dry |
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Allow two hours and over drying time . |
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the anti-corrosion layers before |
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applying Act top coat. |
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Over coating |
Act 100 -TOP coat |
Apply one coat of primer . |
Brush , Roller |
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- Primer consumption per a coat : 0.25Kg /u |
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Allow eight hours and over drying time for a hard dry. |
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The final thickness |
: 850ส and over on 55%
overlap. |
- Applicable Objects : The facilities for skin-temperatures below 100
degrees C. installed on the sea |
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and ground in the manufacturing quarter. |
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- Related Drawing No. : KA -D - 101. |
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- If the temperature of the facilities is increased to 100 degrees C. ,
allow 24 hours and over drying time. |
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- Increase the temperature gradually after drying. |
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- In case of the following severe corrosive environment , wrap the tape
with 55 % overlap. |
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EThe seawater and / or
chemicals splashes facilities installed at the coast , pier and plants. |
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EThe facilities installed
under a wetting and / or splashing water area at all times. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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PRECAUTION IN HANDLING : |
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ACT100-TOP is constituted of A liquid (Main Agent) and B liquid
(Hardener). |
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Add the B liquid little by little with stirring A liquid before
application. |
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Mixing ratio of A liquid to B liquid is 9 to 1. |
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Use up the mixed ACT 100-TOP within its day. |
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ACT TAPE 200 SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the new or old facilities installed on the ground |
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No. KA-S-201 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Hand Tool : |
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Applicable SSPC Spec. : SSPC-SP3 |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Remove oil , wax, mill scales and other foreign matter from the surface
. |
Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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2 |
Under coating |
Act 200 -Primer |
Apply two coats of primer at intervals one hour. |
Brush, Roller |
Apply the primer uniformly. |
- Primer consumption per a coat : 0.25Kg /u |
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Allow one hour drying time. |
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3 |
Tape wrapping |
Act 200 -Tape |
Wrap the tape with 55% / 10%overlap. |
Hand-work |
In case of sticking , stick the |
Tape sticking |
Stick the tape with 10% overlap. |
tape with applying the primer. |
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- Choose between 55% and 10% overlap at the state of the corrosive
environment. |
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Allow one hour drying time. |
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4 |
Over coating |
Act 200 -Primer |
Apply two coats of primer at intervals one hour. |
Brush , Roller |
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- Primer consumption per a coat : 0.25Kg /u |
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Allow eight hours and over drying time for a hard dry. |
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The final thickness |
: 900ส and over on 55%
overlap. |
- Applicable Objects : The facilities for skin-temperatures below 200
degrees C. installed on the sea and ground in the manufacturing quarter. |
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- Related Drawing No. : KA -D - 201. |
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- If the temperature of the facilities is increased to 200 degrees C. ,
allow 24 hours and over drying time. |
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- Increase the temperature gradually after drying. |
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- In case of the following severe corrosive environment , wrap the tape
with 55 % overlap. |
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EThe seawater and / or
chemicals splashes facilities installed at the coast , pier and plants. |
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EThe facilities installed
under a wetting and / or splashing water area at all times. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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ACT TAPE 300 SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the new or old facilities installed on the ground |
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No. KA-S-301 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Hand Tool : |
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Applicable SSPC Spec. : SSPC-SP3 |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Remove oil , wax, mill scales and other foreign matter from the surface
. |
Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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2 |
Under coating |
Act 300 -Primer |
Apply two coats of primer at intervals one hour. |
Brush, Roller |
Apply the primer uniformly. |
- Primer consumption per a coat : 0.25Kg /u |
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3 |
Tape wrapping |
Act 300 -Tape |
Wrap the tape with 10%overlap. |
Hand-work |
Wrap the tape with applying the second |
primer of under coating. |
4 |
Intermediate coat |
Act 300 -Primer |
Apply one coat of primer . |
Brush , Roller |
Fill the primer into mesh of tape . |
- Primer consumption per a coat : 0.5Kg /u |
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Allow two hours and over drying time . |
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5 |
Over coating |
Act 300 -TOP coat |
Apply two coats of primer at intervals one hour. |
Brush , Roller |
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- Primer consumption per a coat : 0.3Kg /u |
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Allow eight hours and over drying time for a hard dry. |
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The final thickness |
: 300ส and over on 10%
overlap. |
- Applicable Objects : The facilities for skin-temperatures below 300
degrees C. installed on the sea and ground in the manufacturing quarter. |
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- Related Drawing No. : KA -D - 301. |
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- If the temperature of the facilities is increased to 300 degrees C. ,
allow 24 hours and over drying time. |
- Increase the temperature gradually after drying. |
- In case of the following severe corrosive environment , wrap more layers
of the tape with 10 % overlap. |
( Repeat the above 3 and 4 in process . ) |
EThe seawater and / or
chemicals splashes facilities installed at the coast , pier and plants. |
EThe facilities
installed under a wetting and / or splashing water area at all times. |
|
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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PRECAUTION IN HANDLING : |
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ACT300-P and ACT300-TOP is constituted of A liquid (Main Agent) and B liquid
(Hardener). |
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Add the B liquid little by little with stirring A liquid before
application. |
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Mixing ratio of A liquid to B liquid is 96 to 4. |
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Use up the mixed ACT 300-P and TOP within its day. |
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ACT TAPE U SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the buried facilities |
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No. KA-S-U01 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Applicable SSPC Spec. : SSPC-SP2 / SSPC-SP3 |
Hand Tool : |
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- Choose between SSPC-SP3 and SSPC-SP2 at the state of metal surface . |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Remove oil , wax and other foreign matter from the surface . |
Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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2 |
Under coating |
Act U -Primer |
Apply two coats of primer at intervals one hour. |
Brush, Roller |
Apply the primer uniformly. |
- Primer consumption per a coat : 0.3Kg /u |
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3 |
Tape wrapping |
Act U -Tape |
Wrap the tape with 10%overlap. |
Hand-work |
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Tape sticking |
Stick the tape with 10% overlap. |
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4 |
Intermediate coat |
Act U -Primer |
Apply one coat of primer . |
Brush , Roller |
Fill primer into mesh of tape . |
- Primer consumption per a coat : 0.7Kg /u |
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Allow one hour drying time . |
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5 |
Tape wrapping |
Act U -Tape |
Wrap the tape with 10%overlap. |
Hand-work |
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Tape sticking |
Stick the tape with 10% overlap. |
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6 |
Intermediate coat |
Act U -Primer |
Apply one coat of primer . |
Brush , Roller |
Fill primer into mesh of tape . |
- Primer consumption per a coat : 0.7Kg /u |
7 |
Over coating |
Act U -Primer |
Apply two coats of primer at intervals one hour. |
Brush , Roller |
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- Primer consumption per a coat : 0.35Kg /u |
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Allow eight hours and over drying time for a hard dry. |
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The final thickness |
: 700ส and over. |
- Applicable Objects : The buried facilities for skin-temperatures below
100 degrees C. |
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- Related Drawing No. : KA -D - U01. |
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- Take care that the coated equipments do not damage as it is buried . |
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- Increase the temperature gradually after drying. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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ACT TAPE 200U SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the buried facilities |
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No. KA-S-U02 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Hand Tool : |
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Applicable SSPC Spec. : SSPC-SP3 |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Remove oil , wax, mill scales and other foreign matter from the surface
. |
Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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2 |
Under coating |
Act 200U-Primer |
Apply two coats of primer at intervals one hour. |
Brush, Roller |
Apply the primer uniformly. |
- Primer consumption per a coat : 0.25Kg /u |
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Allow one hour drying time. |
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3 |
Tape wrapping |
Act 200U-Tape |
Wrap the tape with 55% overlap. |
Hand-work |
In case of sticking , stick the |
Tape sticking |
Stick the tape with 10% overlap. |
tape with applying the primer. |
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Allow one hour drying time. |
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4 |
Over coating |
Act 200U-Primer |
Apply two coats of primer at intervals one hour. |
Brush , Roller |
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- Primer consumption per a coat : 0.25Kg /u |
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Allow eight hours and over drying time for a hard dry. |
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The final thickness |
: 900ส and over. |
- Applicable Objects : The buried facilities for skin-temperatures below
200 degrees C. |
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- Related Drawing No. : KA -D - U02. |
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- Take care that the coated equipments do not damage as it is buried . |
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- If the temperature of the facilities is increased to 200 degrees C. ,
allow 24 hours and over drying time. |
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- Increase the temperature gradually after drying. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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ACT TAPE W SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
For around the tank skirts |
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No. KA-S-W01 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
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Applicable SSPC Spec. : SSPC-SP2 ( Shell and base plates . ) |
Hand Tool : |
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Surface preparation |
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- Remove oil , wax and other foreign matter from the surface of the tank
skirt. |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Smooth the uneven surface on the foundation with mortar and others. |
Power Tool :disc-grinder, etc. |
after surface preparation. |
2 |
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The asphalt's surface of the foundation : Apply one coat of AUC . |
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Act- AUC : |
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Act- AUC |
- AUC consumption per a coat : 0.08Kg / m |
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The primer for preventing the asphalt's surface. |
Under coating |
Act- CUC |
The concrete's surface of the foundation : Apply one coat of CUC . |
Brush , Roller |
The primer for improving the adhesion |
(For the foundation) |
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- CUC consumption per a coat : 0.08Kg / m |
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to the concrete's surface. |
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In case of the severe corrosion at the parts of shell and base plates : |
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|
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Apply each of one coat of the 100-MPrimer and 100-Primer. |
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Under coating |
Act 100-MPrimer |
- Each of the primer consumption per a coat : 0.05Kg / m |
Brush , Roller |
Apply the primer to the metal parts only. |
(For the metal parts) |
Act 100-Primer |
In case of the mild corrosion at the parts of shell and base plates : |
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Apply two coats of 100-Primer at intervals one hour. |
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- Primer consumption per a coat : 0.05Kg / m |
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Allow two hours drying time. |
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3 |
Tape sticking |
Act 100 -Tape |
Shell plate only. |
Hand-work |
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Stick the tape to shell plate with one layer. |
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4 |
Buffer sticking |
Act- BF |
Between tip of base plate and foundation. |
Hand-work |
Act- BF & Act 100 -MAC :The pad and cement |
Stick the buffer around tip of base plate with one layer. |
for buffering the movement of anti-corrosion's |
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layers to the movement of the tank. |
5 |
Cement filling |
Act 100 -MACS |
Base plate and foundation parts. |
Fill the Act 100 -MAC with sloping it toward |
Fill around the tank skirts with Act 100 -MAC . |
the end of foundation. |
- Cement consumption per a coat : 3Kg / m |
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Allow 24 hours drying time . |
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6 |
Tape sticking |
Act 100 -Tape |
The top of base plate parts. |
Hand-work |
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( 50mmw ) |
Stick the tape to 100MAC's surface with one layer. |
7 |
Tape sticking |
Act W -Tape |
All of the 100MAC's surface. |
Brush , Roller |
Stick the tape with applying the primer. |
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Stick the tape with one layer. |
8 |
Tape sticking |
Act W -Tape |
Between shell plate and base plate. |
Brush , Roller |
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( 50mmw ) |
Stick the tape with one layer. |
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Allow one hour drying time . |
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9 |
Intermediate coat |
Act W -Primer |
Apply one coat of primer to all of the applying surface. |
Brush , Roller |
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- Primer consumption per a coat : 0.08Kg / m |
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Allow two hours and over drying time . |
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Take a time adequately to dry the anti-corrosion |
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layers before applying Act top coat. |
10 |
Over coating |
Act W -TOP coat |
Apply one coat of primer to all of the applying surface. |
Brush , Roller |
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- Primer consumption per a coat : 0.08Kg / m |
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Allow eight hours and over drying time for a hard dry. |
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|
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- Applicable Objects : The water proofing around the tank skirts for
skin-temperatures below 100 degrees C. |
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- Related Drawing No. : KA -D - W01. |
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- Dimensions for application depends on the customer's specifications. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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ACT TAPE WH SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For around the tank skirt |
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No. KA-S-W05 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Applicable SSPC Spec. : SSPC-SP2 ( Shell and base plates . ) |
Hand Tool : |
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- Remove oil , wax and other foreign matter from the surface of the tank
skirt. |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Smooth the uneven surface on the foundation with mortar and others. |
Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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2 |
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The asphalt's surface of the foundation : |
Brush , Roller |
Act- AUC : |
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Act- AUC |
Apply one coat of AUC . |
The primer for preventing the asphalt's |
Under coating |
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- AUC consumption per a coat : 0.08Kg / m |
surface. |
(For the foundation) |
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The concrete's surface of the foundation : |
The primer for improving the adhesion |
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Act- CUC |
Apply one coat of CUC . |
to the concrete's surface. |
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- CUC consumption per a coat : 0.08Kg / m |
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Under coating |
Act 200 -Primer |
Apply two coats of 200-Primer at intervals one hour. |
Brush , Roller |
Apply the primer to the metal parts only. |
(For the metal parts) |
- Primer consumption per a coat : 0.05Kg / m |
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Allow two hours drying time. |
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3 |
Tape sticking |
Act 200 -Tape |
Shell plate only. |
Hand-work |
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Stick the tape to shell plate with one layer. |
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4 |
Filling with cement |
Act 200 -MAC |
Base plate and foundation parts. |
Hand-work |
Act 200 -MAC : |
Fill up Act 200 -MAC . |
Fill up Act 200 -MAC with sloping it |
- Cement consumption per a coat : 3Kg / m |
toward the end of foundation. |
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Allow 24 hours drying time . |
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5 |
Tape sticking |
Act 200 -Tape |
The top of base plate parts. |
Hand-work |
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( 50mmw ) |
Stick the tape on 200MAC's surface with one layer. |
6 |
Tape sticking |
Act WH -Tape |
All of the 200MAC's surface. |
Brush , Roller |
Stick the tape with applying the primer. |
Stick the tape with one layer. |
7 |
Tape sticking |
Act WH -Tape |
Between shell plate and base plate. |
Brush , Roller |
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( 50mmw ) |
Stick the tape with one layer. |
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Allow one hour drying time . |
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8 |
Over coating |
Act WH -TOP coat |
Apply two coats of WH -TOP coat at intervals one hour. Primer. |
Brush , Roller |
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- Primer consumption per a coat : 0.08Kg / m |
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Allow eight hours and over drying time for a hard dry. |
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|
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- Applicable Objects : The water proofing around the tank skirts for
skin-temperatures below 200 degrees C. |
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- Related Drawing No. : KA -D - W05. |
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- Dimensions for application depends on the customer's specifications. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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ACT TAPE S.G SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the section of the pipe touching with the support . |
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No. KA-S-S10 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Lift the pipe. |
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Lift the section of the pipe over the support. |
Chain block or jack |
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- Make working space between pipe and support with chain block or jack. |
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2 |
Surface preparation |
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Power Tool : |
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Applicable SSPC Spec. : SSPC-SP2 / SSPC-SP3 |
Hand Tool : |
Apply the primer immediately |
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- Choose between SSPC-SP3 and SSPC-SP2 at the state of metal surface . |
wire-brush, scraper, etc. |
after surface preparation. |
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- Remove oil , wax and other foreign matter from the surface . |
Power Tool : |
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disc-grinder, etc. |
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3 |
Under coating |
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In case of the severe corrosion : |
Brush, Roller |
Apply the primer uniformly. |
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Apply each of one coat of the 100-MPrimer and 100-Primer. |
Act 100 -MPrimer |
- Each of the primer consumption per a coat : 0.25Kg /u |
Act 100 -Primer |
In case of the mild corrosion : |
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Apply two coats of the 100 -Primer . |
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- Primer consumption per a coat : 0.25Kg /u |
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Apply two coats of primer at intervals one hour. |
Smoothing metal surface |
Act100-PTY(putty) |
In case of the uneven metal surface pitted with corrosion : |
Hand-work |
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Fill the uneven metal surface with Act100-PTY . |
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Allow one hour drying time. |
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4 |
Tape wrapping |
Act 100 -Tape |
Wrap the tape with 55% overlap. |
Hand-work |
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Allow one hour drying time. |
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5 |
Intermediate coat |
Act 100 -Primer |
Apply two coats of primer at intervals one hour.. |
Brush , Roller |
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- Primer consumption per a coat : 0.25Kg /u |
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Allow two hours drying time. |
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6 |
Attach the `ct - S.G |
`ct - S.G |
Firmly Pressure-bond with the stainless belt so as to stick on Act tape
and `ct-S.G. |
Hand-work |
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( Stainless Guard ) |
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Lower the pipe |
Act 100 -TOP coat |
Gently lower the pipe down onto the support. |
Hand-work |
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Apply one coat of Act 100 -TOP coat at either end of the tape. |
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Over coating |
- Primer consumption per a coat : 0.25Kg /u |
Brush , Roller |
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Allow eight hours and over drying time for a hard dry. |
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- Applicable Objects : Sections of elevated piping in contact with supports
for skin-temperatures |
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of pipe below 100 / 200 degrees C. |
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- Related Drawing No. : KA -D - S10. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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ACT COAT 300 SYSTEM |
STANDARD APPLICATION SPECIFICATIONS |
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For the new or old facilities installed on the ground |
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No. KA-S-311 |
PROCESS |
MATERIALS |
INSTRUCTIONS |
TOOLS |
NOTES |
1 |
Surface preparation |
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Hand Tool : |
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Applicable SSPC Spec. : SSPC-SP3 |
wire-brush, scraper, etc. |
Apply the primer immediately |
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- Remove oil , wax, mill scales and other foreign matter from the surface
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Power Tool : |
after surface preparation. |
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disc-grinder, etc. |
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Under coating |
Act C300 -Primer |
Apply two coats of primer at intervals one hour. |
Brush, Roller |
Apply the primer uniformly. |
- Primer consumption per a coat : 0.25Kg /u |
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Allow one hour drying time. |
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Over coating |
Act C300 -TOP coat |
Apply two coats of primer at intervals one hour. |
Brush , Roller |
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- Primer consumption per a coat : 0.3Kg /u |
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Allow eight hours and over drying time for a hard dry. |
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The final thickness |
: 1600ส and over . |
- Applicable Objects : The facilities for skin-temperatures below 300
degrees C. installed on the sea and ground in the manufacturing quarter. |
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- If the temperature of the facilities is increased to 300 degrees C. ,
allow 24 hours and over drying time. |
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- Increase the temperature gradually after drying. |
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This application procedure may be changed itself with the local condition
and / or the improved products. |
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PRECAUTION IN HANDLING : |
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ACT300-P and 300-TOP is constituted of A liquid (Main Agent) and B liquid
(Hardener). |
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Add the B liquid little by little with stirring A liquid before
application. |
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Mixing ratio of A liquid to B liquid is 96 to 4 |
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Use up the mixed ACT 300-P and TOP within its day. |
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General condition for the application procedure of ACT tape
system 100, 200 & 300. |
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PDInstallation condition |
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@@The installation works@of ACT tape system shall be executed at ambient
temperature. |
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such as 5 @- 50 and the humidity of max. 85 %. |
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2. Materials storage |
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All materials of ACT tape system shall be stored, handled and
transported in in-door condition |
of normal room temp and with no direct sunlight for max one year. |
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However, primer and top coat@of ACT tape 300 system shall be stored for
max. half year |
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3. Surface preparation |
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Applicable SSPC spec: SSPC:SP3 for steel surface with rust, black skin,
etc. |
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SSPC-SP2 for steel surface of no rust & no sharp projection |
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Using tools : Hand tools : Wire brush, Scrapper, Hammer |
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: Power tools : Disc Sander, Disc Grinder, Sand blasting. |
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1) To remove rust, black skin, mud, oil, wax and other foreign matters
from metal surface. |
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2) To make flat on the steel surface by gridding sharp projection and
welded projection, etc. . |
with power tolls or wire brushes. |
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Further, to fill enough primers on abrasion portion , not to
include air in the parts. |
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3) The metal surface should be dry, free of dew, frost or rain moisture
and free of any |
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dust materials by rags , prior to application of the primer coating
and tape wrapping |
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4) Air shall be not entrapped under coating surface of primers, not to
cause |
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air spot or air bubbles. |
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5) For welding line on pipe, primer coating and tape wrapping shall be
executed on the |
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line portion as additional prior application work. |
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6) In case that the ACT tape system is applied to flanges, valves, tee,
elbow and bolts/nuts , |
to fill our MAC ( filler) around them for causing flat or straight
face for wrapping tape . |
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without air holes or air bubbles. |
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4. Mixing ratio of A-liquid and B-liquid in primer or top coat. |
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The mixing of A-liquid (main agent) and B-liquid ( hardener) in Primer
or Top coat. |
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Please add B-liquid to A-liquid by the mixing situation of A-liquid with
following mixing ratio. |
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Top coat of ACT tape 100 : A-liquid and B-liquid : 9 : 1 |
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Primer and Top coat of ACT tape 300 : A-liquid and B-liquid : 19.6 : 0.4
or 9.8 : 0.2 |
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In case of the mixing of A-liquid and B-liquid of Primer or Top coat,
the effective period is |
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Max. 2 hours in the condition of 30or lower with no direct sun shine
or Max. 1 hours in |
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the condition of 30@or over.@ |
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It is desirable to use the mixed liquid within 30 minutes, after
mixing.. |
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5. Drying time and increasing temp., after finishing the installation
works. |
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In case that pipes wrapped with ACT tape system are increased
temperature after, |
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please keep 24 hours for drying time after the finishing installation
and, after it, increase temp. |
gradually., with increase temp with the speed of 200 / 2 hours for ACT
tape 200 system and . |
300/ 3 hours for ACT tape 300 system, as max speed. |
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6. Inspection |
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6-1. Visual inspection |
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Visual inspection shall be executed after each stage is completed ,
such as followings. |
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1) to check un-coated portion in primer or top coating, after finishing
coating of primer |
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or top coat. |
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In case of ACT tape 300 system, after wrapping tape and finishing
intermediate coating |
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, please check the flatness due to lattice structure of the tape.
If not flat, please |
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fill or coat primer again until becoming flat. |
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2) to check air spot or air bubbles , after finishing tape wrapping. |
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3) to check the total thickness of ACT tape system as following
standard thickness. |
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after drying. |
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Total thickness of ACT tape 100 system : 850 ส@ /- 50 สon 55% overlap |
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200 : 900 ส@ /- 5o ส on 55%
overlap |
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300 : 300 ส@ /- 50 ส on 10%
overlap@ |
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6-2 Pinhole detection test |
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The pinhole detection test shall be carried out after top coat finished
and dried, in case |
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of underground usage. |
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7. Repair |
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All mechanical damages and air pot/air bubble portion in coating and
wrapping shall be |
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repaired by following procedures. |
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1) Cut out damaged area or air pot/bubbles portion by rectangular area
with min. 100mmx100mm |
, using cutter knife & scissors. |
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2) Take off the damaged tape/primer/top coat, by scrapper for small
area |
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or by disc- sander for large area. |
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3) Clean up the surface again, with no foreign materials. |
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4) Apply same procedure as our application procedure, by cutting tape
with 10 % overlap portion. |
In case of small dia. Pipe, please apply the same procedure for
covering all circumferential |
direction including the damaged portion, spirally. |
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