1-20 of 118 Search Results for

airborne contaminants

Sort by
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004106
EISBN: 978-1-62708-184-9
... of corrosion standards proposed by the International Standards Organization (ISO). This article focuses on the important variables associated with atmospheric corrosion in marine atmospheres, namely, moisture, temperature, winds, airborne contaminants, alloy content, location, and biological organisms along...
Image
Published: 30 September 2015
Fig. 5 Dust-collection equipment is commonly used to provide dilution ventilation for dusts generated in field abrasive-blasting containments. Dilution ventilation mixes contaminants with mechanically provided fresh air in the work area to reduce the concentration of airborne contaminants. More
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006030
EISBN: 978-1-62708-172-6
... hazards may require the assistance of an occupational safety and health professional. Air sampling (to evaluate worker exposure to airborne contaminants) or determination of applicable regulations may require considerable expertise. Common Hazardous Coating Constituents (Removal of Existing Coatings...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001487
EISBN: 978-1-62708-173-3
... airborne contaminants are maintained below recommended levels. These levels must be no higher than the allowable levels specified by the U.S. Occupational Safety and Health Administration or other applicable authorities. Many ventilation methods are available. They range from natural convection...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005635
EISBN: 978-1-62708-174-0
.... Natural, mechanical, or respirator ventilation must be provided for all welding, cutting, brazing, and related operations. The ventilation must ensure that concentrations of hazardous airborne contaminants are maintained below recommended levels. These levels must be no higher than the allowable levels...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003105
EISBN: 978-1-62708-199-3
... higher strength. Atmospheric Corrosion ALL UNPROTECTED carbon and alloy steels corrode to some extent when exposed to the atmosphere. The corrosion process can occur relatively rapidly for unalloyed iron, especially in moist air containing specific airborne contaminants. The addition of certain...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003691
EISBN: 978-1-62708-182-5
... as well). The containment and safe disposal of spent blast-cleaning abrasives are required in most localities to prevent environmental damage caused by contamination by airborne particulate containing lead, chromate, and other toxic paint pigments removed during blast cleaning. Therefore, although a paint...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003434
EISBN: 978-1-62708-195-5
... preset requirements and be monitored at set intervals. Temperature and relative humidity are monitored continuously. Typical temperature and humidity requirements are shown in Fig. 3 . Contamination-controlled environments are classified according to the allowable airborne particulate count. The number...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001727
EISBN: 978-1-62708-178-8
... degradation, and interaction with other constituents of the sample or the container. Contamination from airborne dust can be important, and the introduction of foreign substances can occur. Protection from airborne contamination may require handling of samples in ultra-clean rooms ( Ref 16 ). Preservation...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003827
EISBN: 978-1-62708-183-2
... the ocean are two well-known sources of airborne contamination. Rainwater has been recognized as a potential source of corrosive agents that can be inadvertently introduced into a protective environment through atmospheric transport or through leaky structures. Table 2 lists the corrosive agents...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004170
EISBN: 978-1-62708-184-9
... and Shipping Storage and shipping of components, semifinished and finished devices, can lead to contamination by exposure to unregulated atmospheres. The devices are also subject to the fluctuation of ambient RH and temperature ( Ref 8 ). Condensation of moisture and deposition of airborne particles can...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004100
EISBN: 978-1-62708-184-9
..., and bottom sediments. Seawater is a biologically active medium and biofouling contributes to the complexity of corrosion processes in seawater, particularly to the occurrence of localized corrosion processes. Corrosion in marine atmospheres is distinguished by the presence of airborne contaminants...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004173
EISBN: 978-1-62708-184-9
... that the detected chloride ions and the moisture required to support corrosion were airborne. Location of the corrosion site suggested that contaminants entered the coil through the crack in the bobbin. Fig. 9 Inside of failed coil bobbin showing crack (millimeter scale) Fig. 10 Overall view...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002128
EISBN: 978-1-62708-188-7
.... Antimisting Additives Airborne contamination by the metal cutting fluid in the plant is a long-standing problem that occurs when oil-base solutions are used. The addition of small quantities of acrylates or polybutanes will reduce mist formation by encouraging the buildup of larger particle sizes, which...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004204
EISBN: 978-1-62708-184-9
... − ), either from the insulation material itself or from airborne or waterborne contaminants, tend to break down the passivity locally and initiate pitting corrosion. If penetration by acidic airborne or waterborne contaminants of sulfur or nitrogen oxides is possible or if water extracts from the insulation...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001459
EISBN: 978-1-62708-173-3
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002192
EISBN: 978-1-62708-188-7
... respirator should be easily accessible in case of airborne contamination. Protective clothing consisting of coveralls and shoe coverings must be worn in place of street clothes. Upon leaving the uranium working area, personnel should wash hands and faces before eating, drinking, or smoking, and anyone...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006025
EISBN: 978-1-62708-172-6
..., and/or the general public. As discussed earlier, not only can paint odors be a problem, but any dripping or airborne paint particulate (e.g., overspray) can be harmful to nearby equipment, manufacturing operations, structures, vehicular traffic, other craft workers, or the general public. When any of these or other...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003424
EISBN: 978-1-62708-195-5
... with these materials. The aforementioned machining processes can be completed dry (with vacuum) or wet. When machining dry, a vacuum system must be used to collect the dust particulates to prevent them from becoming airborne. The vacuum system normally used is an ultrahigh-efficiency cartridge- type dust...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003694
EISBN: 978-1-62708-182-5
... contaminate adjacent locations. Airborne dust can be a hostile environment for the blast operator, and an air-fed hood must be worn while operating the air blast cleaning equipment. In addition, open nozzle blast abrasives are expensive and are usually not recycled in the field. Open nozzle blasting...