Teledyne 2150EX Installation And Operation Manual page 130

2150EX Area Velocity Flow Module
Appendix D General Safety Procedures
Gas Chemical Common
Formula Properties
Hydrogen H S Irritant and poisonous vol-
2
Sulfide atile compound. Rotten
egg odor in small concen-
trations. Exposure for 2 to
15 min. at 0.01% impairs
sense of smell. Odor not
evident at high concentra-
tions. Colorless. Flamma-
ble.
Methane CH Simple asphyxiant.
4
Colorless, odorless, taste-
less, flammable.
Nitrogen N Simple asphyxiant. Color-
2
less, tasteless. Non-flam-
mable. Principal
constituent of air. (about
79%).
Nitrogen NO Colorless
Oxides
N O Colorless,
2
sweet odor.
NO Reddish-brown.
2
Irritating odor.
Deadly poison
Oxygen O Colorless, odorless, taste-
2
less. Supports combus-
tion.
Ozone O Irritant and poisonous.
3
Strong electrical odor.
Strong oxidizer. Colorless.
At 1 ppm, strong sulfur-like
odor.
Sludge —*** Mostly a simple asphyx-
Gas iant. May be practically
odorless, tasteless.
Sulfur SO Colorless, pungent odor.
2
Dioxide Suffocating, corrosive, poi-
sonous, non-flammable.
Toluene C H Colorless, benzene-like
5 12
to odor.
C H
9 20
Turpentine C H Colorless, Characteristic
10 16
odor.
Xylene C H Colorless, flammable
8 10
* Percentages shown represent volume of gas in air.
** For concentration over 0.3%.
***Mostly methane and carbon dioxide with small amounts of hydrogen, nitrogen, hydrogen sulfide, and oxygen; occasionally traces of carbon monoxide.
D-8
Table D-1 Hazardous Gases (Continued)
Specific Physiological
Gravity or Effect*
Vapor
Density Exposure
Air = 1
1.19 Impairs sense of smell, rap-
idly as concentration
increases. Death in few min-
utes at 0.2%. Exposure to
0.07 to 0.1% rapidly causes
acute poisoning. Paralyzes
respiratory center.
0.55 Acts mechanically to deprive Probably no
tissues of oxygen. Does not
support life. vided oxygen
percent-age
is sufficient
0.97 Physiologically inert.
1.04 60 to 150 ppm cause irritation
and coughing.
1.53 Asphyxiant.
1.58 100 ppm dangerous.
200 ppm fatal.
1.11 Normal air contains 20.8% of
O . Man can tolerate down to
2
12%. Minimum safe 8 hour
exposure, 14 to 16%. Below
10%, dangerous to life. Below
5 to 7% probably fatal.
1.66 Max. naturally occurring
level is 0.04 ppm. 0.05 ppm
causes irritation of eyes and
nose. 1 to 10 ppm causes
headache, nausea; can
cause coma. Symptoms sim-
ilar to radiation damage.
Variable Will not support life.
vary widely with composi-
2.26 Inflammation of the eyes. 400
to 500 ppm immediately fatal.
3.14 At 200-500 ppm, headache,
nausea, bad taste, lassitude.
4.84 Eye irritation. Headache, diz-
ziness, nausea, irritation of
the kidneys.
3.66 Narcotic in high concentra-
tions. less toxic than ben-
zene.
Max Max. Explosive Likely
Safe Safe Range Location
60 Min. 8 Hour (% by vol. of
Exposure in air.) Highest
ppm ppm Limits Concentration
lower/upper
200 20 4.3 Near bottom,
to 45.0 but may be
300 above bottom
if air is heated
and highly
humid.
— 5.0 At top, increas-
limit, pro- 15.0 ing to certain
depth.
for life.
— — — Near top, but
— may be found
near bottom.
50 10 — Near bottom
—
— — — Variable at dif-
— ferent levels.
0.08 0.04 — Near bottom
—
No data. Would 5.3 Near top of
19.3 structure
tion.
50 10 — At bottom, can
to — combine with
100 water to form
sulfurous acid.
200 100 1.27 At bottom
7.0
— 100 At bottom.
— 100 1.1 At bottom
7.0
Most Simplest and
Common Cheapest
Sources Safe Method
of Testing
Coal gas, petro- 1. H S Ampoule.
2
leum, sewer gas.
Fumes from blasting 2. 5% by weight
under some condi- lead acetate
tions. solution.
Sludge gas.
Natural gas, sludge 1. Combustible
gas, manufactured gas indicator
gas, sewer gas.
Strata of sedimen- 2. Oxygen defi-
tary origin. In ciency indicator.
swamps or marshes.
Sewer gas. sludge Oxygen
gas. Also issues deficiency
from some rock indicator
strata.
Industrial wastes. NO detector tube
2
Common air pollut-
ant.
Oxygen depletion Oxygen deficiency
from poor ventilation indicator
and absorption, or
chemical consump-
tion of oxygen.
Where ozone is used Detectable odor
for disinfection at 0.015 ppm
From digestion of See components
sludge
Industrial waste, Detectable taste and
combustion, com- odor at low concen-
mon air pollutant. tration
Solvent Combustible gas
indicator
Solvent, used in 1. Detectable odor
paint at low
concentrations.
2.Combustible
gas indicator.
Solvent Combustible gas
indicator