truongthoaingocbgas

truongthoaingocbgas

Prepared & Presented by Technical Service – PT. HEMPEL Indonesia

1 - OIL & GREASE

Suitable DETERGENT + WATER

2 - SOLUBLE SALT

WATER Washing (WATER JETTING)

3 - DUST

4 - MOISTURE

VACUUM Cleaning
HEATING & VENTILLATION

1

MILLSCALE & RUST

Abrasive BLASTING, Water Jetting, TOOL Cleaning

2

SURFACE BLAST CLEANING STANDARD
ISO 8501- 1 and/or SSPC Visual 1

SURFACE ROUGHNESS or ANCHOR PROFILE
ISO 8503 – 1 (Comparator Gages)

SURFACE CHLORIDES or SOLUBLE SALTS
ISO 8502 – 6 & 9 (Bresle Method)

3

1. Compressor
2. Supply Air
3. Blasting Pot
4. Blasting Hose
5. Deadman Switch
6. Air Filters
7. Oil/Water Trap
8. Venturi Nozzle
9. Blasting Grit
10.PPE, Ventilation &
Air Filters

4

Old Paint Removal

Blast Cleaning Equipment

Rust Removal

Blasting Abrasive

5

MATERIALS
NEEDED
STEP 1.0

Use any dry, white absorbent material, such as several layers of cheese
cloth or a piece of white blotter paper.
Test the air supply at an outlet that is downstream from oil & moisture
traps & as close as possible to the equipment using the air. Hold the
blotter or test material in the air stream for a minimum of 2 minutes.
The blotter or test material should be held within a distance of 24
inches from the source of air stream being tested.

6

STEP 1.1

If air from the abrasive blast nozzles is being tested, make sure that the
abrasives source is cut off & that only air is coming out of the nozzle,
prior to holding the blotter of test material in front of the nozzle.

STEP 1.2

If air is being discharged at several locations drawing from a common
manifold source, it is necessary to test the air cleanliness at each
location. The test should be run at each point of use if more than 100
feet of air hose is used or if several distant, several outlet locations are
used.

7

STEP 2.0

FREQUENCY
OF TEST

Examine the test material immediately after the test is completed for
evidence of...