Blasting Rooms

Whether you are planning a large, high or low production blast facility, WEBLAST provides each design with the right equipment to produce the best results.

WEBLAST enclosed blasting facility reflect years of experience in using, designing and building abrasive blasting equipment. We believe in simple, easy to operate and maintain equipment, integrated into well thought out system. Each blast room is designed for easy installation, simple maintenance and increase productivity with superior overall performance.

Selection of Abrasive Recovery Methods 
Read more here CatWbm10BRm.pdf

Modern day blast rooms shall have the following features.

  1. A full floor recovery system that is economical to operate and has minimal mechanical installation under the working floor.
  2. Provide heavy duty rail tracks for work car to move in and out of the room with ease.
  3. Fully ventilated and brightly lit space to meet industrial standard required for blasting work inside the room. 

WEBLAST Full Floor Recovery Blast Room Features

  • Shallow excavation required that the system be installed in a pit as shallow as 14” deep. No excavation is needed if the user can accept to have the rail track put higher to take the pit depth as the floor level.
  • Positive mechanical sweeper to screen foreign debris and uneven distribution of loading
  • Minimum number of working parts and modular in construction where each sweeper module maintains its independency from the failure of others, to keep the complete system operating
  • Easy visual inspection of all working floor components for routine maintenance
  • Sealed floor pans, a major consideration requiring that all shot must fall onto a recoverable surface
  • Modular construction fast installation
Ventilation and Humidity Control

There are three primary reasons for ventilating an enclosed space during cleaning and coating process: operator health & safety, operator visibility and curing of coating. A slightly negative air pressure is maintain in the room to ensure dust does not blow out through small gaps.
Dust collectors are used to remove blasting dust.
Spray booths are used during painting operation in confined spaces.
Dehumidification may be required to control relative humidity, to prevent condensation on steel substrate and to create a comfortable working condition.

Project Reference on Blasting Rooms 
Blast Room
2006 2008
2009 2010
2015 2021


Common Mistakes and Rectification
Common mistakes made in the approach to construct a blast room happen due to insufficient understanding of the main fundamental features required in the design as simply described below.
Basic Requirements:
* Construct for proper ventilation
* Wear & tear protection
* Uninterrupted abrasive recovery
* Abrasive cleaning & re-use
* Work handling & ease of access
Design Guidelines:
* Meeting industrial pollution control practice & allows for  clear visual view while blasting is in process
* Reduce damages on equipment whether it is the room floor, wall, ceiling, lighting or the operator’s PPE
* Minimize stoppage due to jams, bearing failure, large debris invasion or lose of efficiency due to no regular maintenance
* Clean abrasive means saving on compressor energy & faster blasting production
* Moving the works quickly inside, removing it fast for new job and choice of a big door that is easy to operate
Case Study on Project ref K131 for a Steel Fabrication Plant
This fabrication plant is located in the far east of Jakarta & has a production covered space of 15,000m2  includes area for storage of raw material, cutting, drilling, fitting, welding, blasting, painting and completed steel works storage. It is considered a well equipped fabrication shop but the steel surface finishing facilities are a little worn out and improper from the earlier design. The fundamental of the blast room is mostly unmet & ways have been proposed after several site visits by our engineers to rectify issues that cause the most production down time. Upgrades are also implemented on installation of a time saving large fold up door, quick access via a small man door and remote operator control blast On/off system.
Blast room inspection. The front door is of heavily built metal swing doors that are hard to push open manually. The rear side is closed. This is a one end closed blast room design. Exhaust duct wrongly placed on the roof top. Corrected end to end ventilation with the best air flow pattern, fully utilizing the rightly size dust collector & meeting the criteria for air change per hour. Good visibility after the rectification works. Large fold up door is added that is motorized. Inside lined with rubber and outside covered with durable canvass material.

The rectification works resolved several important productions down time problems namely, 

  1. Poor visibility work space inside room due to dirty abrasive, under-sized dust collector and wrongly position ventilation air flow. 
  2. Regular abrasive recovery jammed up situation is eradicated by straight forward modification on the bucket elevator with added safe access to the deep pit for cleaning & no hassle maintenance routine. 
  3. Work entry that save operator time, less man power needed now to even allow a one man operation without close monitoring or On/Off coordination.
The old blast room described above is of semi-automatic abrasive recovery type with the floor fully lined with steel plates. A pair of floor track allows a work trolley moves in by man or with the winch system in place. Operator manual sweeping of the floor inside the room is still needed to move the abrasive sideways towards the screw conveyors installed along the room wall. 
WEBLAST proposed further upgrade in the future to install a full floor recovery system that will make it fully automated recovery during production hours.
Our Other Related Brochures
# Full Floor Recovery System 
# Dust Collector 
# Large Fold Up Door 
# Vacuum Recovery 
# Dehumidification 
# Large Blast Halls 
# BlastPots 
# Air-Cooled Compressed Air Dryer
# Blaster PPE & Hand Tools

Blasting & Painting Chambers – Equipment Installation Process

Equipment between 2 chambers Control panel & hydro-pneumatic control
Recirculation air ducts Blast pots installed under abrasive tank
Abrasive tank, paint booth & dust collector
(Elevated inspection platform, roof shed installation in progress for tank)
Typical top down ducted inlet to dust collector
(Shown is model 3DF24 collector unit)


(Cat No. BlastHallsInst2.pdf)

Abrasive cleaning dust collectors installation Belt conveyor pit recovery
Screw conveyor type floor recovery complete with elevator, separator & tank Typical recovery bucket elevator, abrasive cleaning separator & storage tank for a blast room
Recovery floor hopper & to be installed with heavy duty grating, applicable to both belt conveyor type or screw recovery systems