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PRA-1Project:

Resurfacing heliport floor

critical to transport of

resources

Shutdown time as

short as possible

Project enclosed entire

heliport perimeter

Heliport Pad Restoration on Petrobras PRA-1 Platform

Project 796

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Heliport Pad Restoration on Petrobras PRA-1 Platform

Substrate: Aluminum

Specifications:Project Size: 358m (3853 ft)

Preparing Containmentusted luminum Deck

Profile: 40-85microns(2-3mils)

Sponge Media Used:Silver 30 Sponge Media abrasives

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PRA-1

Considered:

Substrate was previously

cleaned with water blasting;

paint was still present

Specifications:

Profile:

50-80 microns(2-3mils)Cleanliness level:

SSPC SP-7/ SA1

Commercial Brush Off Blasting

Equipment: (1) 400-HP

and (1) 100-HP Feed Unit

working simultaneously

Safety: Initially, management was

uncomfortable with two Feed

Units blasting side by side

Heliport Pad Restoration on Petrobras PRA-1 Platform

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PRA-1

Reason for choosing

Sponge-Jet?

Ordinary blasting would require

a more complex containment

structure

Heliport Pad Restoration on Petrobras PRA-1 Platform

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PRA-1

Heliport Pad Restoration on Petrobras PRA-1 Platform

TWO BL STERS

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PRA-1

Outcome:

Plant managmentrecognized this as a

new, safe and efficient

solution

Contracting two more

Petrobras platformheliports

Operators doubled

production, using two

Feed Units at the same

time - 358m (3,853 ft)

in 1 days

Heliport Pad Restoration on Petrobras PRA-1 Platform

BEFORE FTER