–SSPC-SP2 Hand Tool Cleaning –SSPC-SP3 Power Tool Cleaning –SSPC-SP11 Power Tool Cleaning to Bare Metal –SSPC-SP5/NACE 1 White Metal Blast –SSPC-SP10/NACE 2 Near White Metal Blast –SSPC-SP6/NACE 3 Commercial Blast –SSPC-SP7/NACE 4 Brush-Off Blast –SSPC-SP12/NACE 5 Surface Preparation and Cleaning of Metals by

either 1000 or 2000. Silica must be contained and disposed of properly. Even if a wet blasting method is selected, silica that is allowed to migrate by either wind or water, will eventually become an airborne contaminant. Air supply: Air-supplied respirators must be used (1) when working inside of blast cleaning

Introduction Shot Blasting is a surface treatment process using high stream of abrasive material. Mechanical force is used to propel blast media such as sand, sponge or glass beads at the surface to be cleaned to remove contaminants …

SSPC-SP5/NACE 1- White Metal Blast Cleaning This SSPC/NACE joint standard describes the cleaning of a steel surface, previously painted or unpainted, to a white metal condition through the use of abrasive blast media. White metal is a term used to describe a surface that's uniformly free of all foreign matter and white or gray in appearance.

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Jun. 21, 2017. 1,736 views. Dry ice-blasting is a form of carbon dioxide cleaning, where dry ice, the solid form of carbon dioxide, is accelerated in a pressurized air stream and directed at a surface in order to clean it. An alternative media for non …

BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) Square or rectangular pattern. 114 DELAY PATTERNS Delay patterns, and varying the hole array to fit natural excavation topography, allow for more efficient use of the explosive energy in the blast. Benches may be designed and carried forth with more

Sand blasting 1. SUBMITTED BY:EBAD-ULLAH KHAN ROLL NO:D-15-AR-40 2. •Sand blast cleaning, is a surface treatment process widely used in a variety of different industries with many diverse purposes. Sand blasting is the process by …

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15. Process Of Blasting 1.The blast holes are made and cleaned by using the tools. 2.The charge of explosive placed at the bottom. 3.Remaining portion is filled with clay and tamped. 4.Fuse is inserted, kept projecting 15-20 cm above the …

Blast cleaning It is assumed that prior to treatment the steel surface has been cleaned of dirt and grease, and that the heavier layers of rust have been removed by chipping. Sa 1 Light blast cleaning. Loose mill scale, rust and foreign matter shell be removed. The appearance shall correspond to the prints designated Sa 1. Sa 2 Thorough blast ...

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Content of quartz and heavy metals in blast cleaning media (ISO 8504-2) shall be given. 7 SURFACE PREPARATION 7.1 Pre-blasting preparations Sharp edges, fillets, corners and welds shall be rounded or smoothed by grinding (min R = 2 mm). Hard surface layers, e.g. resulting from flame cutting, shall be removed by grinding prior to blast cleaning.

tank cleaning Internal cleaning is the main point of tank maintenance. In order to disrupt the production process as little as possible, a quick and thorough cleaning of storage tanks, reactor tanks etc. is crucial. The external cleaning of tanks occurs primarily for avoiding corrosion or for visual reasons. The large number of varying tank designs

- This Video show's you how a shot blasting machine works, and how it can be used to profile and blast a concrete floor surface...

HPWW Requirement PAGE 4 HPWW Requirement Flowchart of Process Steps for Contractor HPWW Activity Step 1 •Identify the activities requiring HPWW and assess alternative cleaning methods (i.e. automatic cleaning) •Mondi job requester (Contractor owner) Step 2 •Arrange for cleaning proposals from contractors, i.e. supply the Mondi Requirement in the tender documents

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A Shot blasting machine is an enclosed equipment designed for abrasive blasting for cleaning and preparing metal, stone and other surfaces.It is a machine for shot peening, cleaning metal parts such as forging, casting parts, steel surfaces, heavy metal structures, rusted metal parts etc.Shot blasting machine uses blast media on the metal parts in an enclosed chamber to remove surface rust ...

and sent to Blast Furnace top via conveyors/Skips for charging into the blast furnace as per predetermined charging schedule." v) Gas Cleaning Plant (GCP): The blast furnace gas (BFG) generated in the BF is cleaned through a series of steps (primary cleaning at …

Hydroblaster Safety. High pressure water cleaning has become more common over the past few years, often replacing the need for sand blasting. The uses of hydroblasters vary from paint and grease removal, tank cleaning and log debarking, to rodding of heat exchangers and cleaning of sidewalks.

Introduction Shot Blasting is a surface treatment process using high stream of abrasive material. Mechanical force is used to propel blast media such as sand, sponge or glass beads at the surface to be cleaned to remove contaminants such as paint,rust, corrosive layer etc. Can be performed in closed environments like blasting chambers or ...

• Use a less toxic abrasive blasting material. • Use abrasives that can be delivered with water (slurry) to reduce dust. 2. Isolation and Containment • Use barriers and curtain walls to isolate the blasting operation from other workers. • Use blast rooms or blast cabinets for smaller operations.

ISO adapted it into their established order as Sa 2 1/2, Very Thorough Blast Cleaning, but SSPC went outside the order, adding it chronologically as SP 10 Near White. The two versions were not equal: Sa 2.5 permitted stains, streaks and shadows from rust, mill scale and coatings to remain on up to 15% * of the surface, whereas SP 10 allowed for ...

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Blast cabinets, suction and pressure: This stationary sandblasting equipment also ranges in size. It uses a siphon feed system and a balancing pressure regulator to ensure equilibrium inside the blast cabinet. Bulk blasting systems: These are large sandblasting units available in stationary models or truck-mounted for total portability.

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8.2.1 Near- white metal blast cleaning shall be in accordance with SSPC-SP10 "Near white metal blast cleaning" (ISO 8501-1 Sa2.5). 8.2.2 SSPC-SP10 "Near white metal blast cleaning" shall be used for the surface preparation of external and internal coating for atmospheric protection of above ground steel structures, tanks vessels, piping ...

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Centrifugal wheel blasting is the more common blast cleaning technique as well as the most economical and environmentally friendly method. The turbine delivers abrasive shot by centrifugal force in a specific and controlled direction, speed and quantity. Function of the …

SSPC-SP16 Brush-Off Blast Cleaning of Coated and Uncoated Galvanized Steel, Stainless Steels, and Non-Ferrous Metals. Use of this surface preparation standard roughens and cleans the bare substrate including a hot-dip galvanized coating to create a profile suitable for painting. Completion of this process produces a profiled surface free of all ...

Commercial Blast Cleaning Blast cleaning until at least two-thirds of the surface is free of all visible residues with only staining permitted on the remainder. For conditions where a thoroughly cleaned surface is required. SP 7/NACE No. 4 Brush-Off Blast Cleaning Blast cleaning of all except tightly adhering residues of mill scale, rust, and

BLASTING. Abrasive blasting is a process for cleaning or finishing ferrous metals by directing a stream of abrasive particles against the surface of the parts. Abrasive blasting is used for the removal of rust and corrosion and for cleaning prior to painting or plating. The following standard blast-cleaning practices should be adopted. a.

High-pressure water cleaning: The use of high-pressure water, with or without the addition of other liquids or solid particles, to remove unwanted matter from various surfaces. High-pressure water cleaning systems: Water delivery systems, which have nozzles or other openings whose function is to increase the speed of liquids.

SSPC-SP16, Brush-Off Blast Cleaning of Coated and Uncoated Galvanized Steel, Stainless Steels, and Non-Ferrous Metals •Using SSPC VIS 1 •Governing document For dispute resolution, the written standard is the governing document; visuals are guides to the written standards .

Abrasive blast cleaning generally is considered to be an economical process. It is faster th~n competitive processes of pickling, electrochemical cleaning, or hand finishing, and thus reduces manhours required. In addition, equipment investment is not sUbstantially influenced by model changes, operational procedures,