Air Sampling and Industrial Hygiene Engineering - Chapter 1 pps

... 20 01 CRC Press LLC 11 Monitoring for Toxicological Risk 11 .1 Types of Sampling 11 .1. 1 Long-Term Samples 11 .1. 2 Short-Term Samples 11 .1. 3 Area Samples 11 .1. 4 Wipe Samples 11 .2 Quality Control 11 .3 ... (HCN) 11 .4.7 Lead 11 .4.8 Flammable Chemicals 11 .4.9 Reactive Hazards—Oxidizers 11 .4 .10 Paint 11 .4 .11 Cleaning Supplies 11 .4 .12 Compressed Gases 11 .5 Confi...

Ngày tải lên: 11/08/2014, 06:22

... 210 min 450 min ϭ 6.07 mg/m 3 Y ϭ 6.07 mg/m 3 /PEL ϭ 6.07/5.0 ϭ 1. 21 Assuming a continuous sample: LCL ϭ 1. 21 – 0.23 ϭ 0.98 UCL ϭ 1. 21 ϩ 0.23 ϭ 1. 44 Step 2. Since the LCL Ͻ 1. 0 and the UCL Ͼ 1. 0, ... 70/200 Y 1 ϭ 0.5 Y 2 ϭ 0.4 Y 3 ϭ 0.35 R 1 ϭ Y 1 /E m ϭ 0.4 R 2 ϭ 0.32 R 3 ϭ 0.28 • (RS t ) 2 ϭ (0.4 2 )(0.089 2 ) ϩ (0.32 2 )(0 .11 2 ) ϩ (0.28 2 )(0 .18 2 ) •RS t ϭ [(RS...

Ngày tải lên: 11/08/2014, 06:22

... Barometric pressure and air temperature should be noted when using air veloc- ity meters. © 20 01 CRC Press LLC designed in accordance with ASME B19. 1- 1 985 and B19.1a -1 9 85, Safety Standards for Compressor ... vacuum breakers, and back- flow preventers with intermediate atmospheric vents will be in accordance with American Society of Sanitary Engineering (ASSE) Standards...

Ngày tải lên: 11/08/2014, 06:22

... limitations/hazards are identified and controlled so that injuries, spills, or hazards are minimized. It is mandated in 29 CFR 19 10 .11 9 and applies to manufacturing plants and other industries that are ... control the pH within the range of 10 .5 to 11 .5 for the first-stage reaction (cyanide to cyanate) and the second-stage reaction (cyanate to carbon dioxide and nitrogen)....

Ngày tải lên: 11/08/2014, 06:22

... regulations 29 CFR 19 10 .14 50 (laboratory), 29 CFR 19 10 .12 0 (hazardous waste operations and emergency response), 29 CFR 19 26.58 (asbestos, tremolite, antho- phylite, and actinolite), 29 CFR 19 10 .10 28 (benzene), ... chemical stresses within the workplace: long-term (8 12 h) TWA samples, short-term samples (5 to 60 min), area samples, and wipe tests. 11 .1. 1 Long-Term Sampl...

Ngày tải lên: 11/08/2014, 06:22

... l/min. High-flow pumps are used for asbestos, PAHs in indoor air, PM10 and PM2.5 in indoor air, bioaerosol sampling, stack sampling, fenceline monitoring, and background monitoring. (SKC —AirCheck ... or on-site immunoassay testing must be accomplished. Therefore, until results are obtained and inter- preted, on-site personnel would be required to wear HEPA-OV cartridge full- face...

Ngày tải lên: 11/08/2014, 06:22

... grid, and the instrument’s detector readouts are compared to the bump gas known concentration (Figure 3 .11 ). Figure 3 .11 Bump testing needs to be performed regularly to ensure that real-time air ... properly. (MSA) © 20 01 CRC Press LLC Figure 3 .10 Secondary standard rotameters are used in the field to calibrate air- sampling pumps. Rotameters are calibrated to a primary standard...

Ngày tải lên: 11/08/2014, 06:22

... worst-case scenario for soils and are evalu- ated using log-normal distribution, Kriging, or Monte Carlo analysis. Ground- and surface-water samples are collected (20 samples per location) and ... and engineering controls may require air monitoring of personnel, area of influence, and the site perimeter. In order to understand the context under which air monitoring protocols...

Ngày tải lên: 11/08/2014, 06:22

... Acombination of contact and air- sampling information is required to assess most buildings (Figure 6 .1) , and these acceptable numbers vary given different biological con- taminant mixes and building usage. ... surfaces and in waters. 6.3 .13 What Can Be Done to Prevent Aspergillus Growth? Keep the air dry, provide filtered replacement air, and have sufficient air exchanges...

Ngày tải lên: 11/08/2014, 06:22

... Type NRC ICRU NCRP X-rays & gamma rays 1 1 1 Beta rays except 3 H1 1 1 Tritium betas 1 1 Fast neutrons 10 25 20 Alpha particles 20 25 20 © 20 01 CRC Press LLC 8.3.4 Sampling and Initial Site ... 20 01 CRC Press LLC Table 8.8Photon Attenuation Coefficients Energy ␮(cm 1 ) (MeV)WaterLeadConcrete 0. 01 4.99 14 53 62.3 0 .1 0 .16 8 59.4 0.400 0.3 0 .11 9 4.32 0.2 51 0....

Ngày tải lên: 11/08/2014, 06:22