Teledyne 6712FR Installation And Operation Manual page 214

6712FR Refrigerated Sampler
Appendix C General Safety Procedures
Chemical Common
Gas
Formula Properties
Gas Chemical Common
Formula Properties
Hydro- H S Irritant and poi-
2
gen Sul- sonous volatile
fide compound. Rot-
ten egg odor in
small concentra-
tions. Exposure
for 2 to 15 min. at
0.01% impairs
sense of smell.
Odor not evident
at high concen-
trations. Color-
less. Flammable.
Methane CH Simple asphyx-
4
iant.
Colorless, odor-
less, tasteless,
flammable.
Nitrogen N Simple asphyx-
2
iant. Colorless,
tasteless.
Non-flammable.
Principal constit-
uent 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, odor-
2
less, tasteless.
Supports com-
bustion.
Ozone O Irritant and poi-
3
sonous. Strong
electrical odor.
Strong oxidizer.
Colorless. At 1
ppm, strong sul-
fur-like odor.
C-8
Table C-1 Hazardous Gases (Continued)
Specific Max
Gravity Safe 60
Physiological
or Vapor Min.
Effect
Density Exposure
Air =1 ppm
Specific Physiological Max
Gravity or Effect* Safe
Vapor 60 Min.
Density Exposure
Air = 1 ppm
1.19 Impairs sense 200
of smell, rap- to
idly as concen- 300
tration
increases.
Death in few
minutes at
0.2%. Exposure
to 0.07 to 0.1%
rapidly causes
acute poison-
ing. Paralyzes
respiratory
center.
0.55 Acts mechani- Probably no
cally to deprive limit, pro-
tissues of oxy- vided oxygen
gen. Does not percent-age
support life. is sufficient
for life.
0.97 Physiologically —
inert.
1.04 60 to 150 ppm 50
cause irritation
and coughing.
1.53
Asphyxiant.
1.58
100 ppm dan-
gerous.
200 ppm fatal.
1.11 Normal air con- —
tains 20.8% of
O . Man can tol-
2
erate down to
12%. Minimum
safe 8 hour
exposure, 14 to
16%. Below 10%,
dangerous to
life. Below 5 to
7% probably
fatal.
1.66 Max. naturally 0.08
occurring level
is 0.04 ppm.
0.05 ppm
causes irrita-
tion of eyes and
nose. 1 to 10
ppm causes
headache, nau-
sea; can cause
coma. Symp-
toms similar to
radiation dam-
age.
Explosive Likely
Max. Safe
Range (% by Location
8 Hour
vol. in air) of
Exposure
Limits Highest
ppm
lower/upper Concentration
Max. Explosive Range Likely
Safe (% by vol. Location
8 Hour in air.) of
Exposure Limits Highest
ppm lower/upper Concentration
20 4.3 Near bottom,
but may be
45.0 above bottom if
air is heated and
highly humid.
— 5.0 15.0 At top, increas-
ing to certain
depth.
— — — Near top, but
may be found
near bottom.
10 — — Near bottom.
— — — Variable at dif-
ferent levels.
0.04 — — Near bottom.
Simplest and
Most
Cheapest
Common
Safe Method
Sources
of Testing
Most Simplest and
Common Cheapest
Sources Safe Method
of Testing
Coal gas, 1. H S
2
petro- Ampoule.
leum,
sewer gas. 2. 5% by weight
Fumes lead acetate
from blast- solution.
ing under
some con-
ditions.
Sludge gas.
Natural 1. Combustible
gas, sludge gas indicator
gas, manu-
factured 2. Oxygen defi-
gas, sewer ciency indica-
gas. Strata tor.
of sedi-
mentary
origin. In
swamps or
marshes.
Sewer gas. Oxygen
sludge gas. deficiency
Also issues indicator.
from some
rock strata.
Industrial NO detector
2
wastes. tube.
Common
air pollut-
ant.
Oxygen Oxygen defi-
depletion ciency indica-
from poor tor.
ventila-
tion and
absorp-
tion, or
chemical
consump-
tion of
oxygen.
Where Detectable
ozone is odor
used for at 0.015 ppm.
disinfec-
tion.