Teledyne 6712FR Installation And Operation Manual page 213

Chemical Common
Gas
Formula Properties
Carbon CO Asphyxiant, Col-
2
Dioxide orless, odorless.
When breathed
in large quanti-
ties, may cause
acid taste.
Non-flammable.
Not generally
present in dan-
gerous amounts
unless an oxygen
deficiency exists.
Carbon CO Chemical
Monox- asphyxiant. Col-
ide orless, odorless,
tasteless.
Flammable.
Poisonous.
Carbon CCl Heavy, ethereal
4
Tetra-Chl odor.
oride
Chlorine Cl Irritant. Yel-
2
low-green color.
Choking odor
detectable in very
low concentra-
tions. Non-flam-
mable.
Formal- CH O Colorless, pun-
2
dehyde gent suffocating
odor.
Gasoline C H Volatile solvent.
5 12
to Colorless. Odor
C H noticeable at
9 20
0.03%. Flamma-
ble.
Hydrogen H Simple asphyx-
2
iant. Colorless,
odorless, taste-
less. Flammable
Hydrogen HCN Faint odor of bit-
Cyanide ter almonds.
Colorless gas
Table C-1 Hazardous Gases (Continued)
Specific Max
Gravity Safe 60
Physiological
or Vapor Min.
Effect
Density Exposure
Air =1 ppm
1.53 Cannot be 40,000
endured at 10% to
more than a 60,000
few minutes,
even if subject
is at rest and
oxygen content
is normal. Acts
on respiratory
nerves.
0.97 Combines with 400
hemoglobin of
blood. Uncon-
sciousness in
30 min. at 0.2%
to 0.25%. Fatal
in 4 hours at
0.1%. Head-
ache in few
hours at 0.02%.
5.3 Intestinal 1,000
upset, loss of to
consciousness, 1,500
possible renal
damage, respi-
ratory failure.
2.49 Irritates respi- 4
ratory tract.
Kills most ani-
mals in a very
short time at
0.1%.
1.07 Irritating to the —
nose.
3.0 Anesthetic 4,000
to effects when to
4.0 inhaled. Rap- 7,000
idly fatal at
2.4%. Danger-
ous for short
exposure at 1.1
to 2.2%.
0.07 Acts mechani- —
cally to deprive
tissues of oxy-
gen. Does not
support life.
0.93 Slight symp- —
toms appear
upon exposure
to 0.002% to
0.004%. 0.3%
rapidly fatal.
6712FR Refrigerated Sampler
Appendix C General Safety Procedures
Explosive Likely
Max. Safe
Range (% by Location
8 Hour
vol. in air) of
Exposure
Limits Highest
ppm
lower/upper Concentration
5,000 — — At bottom;
when heated
may stratify
at points
above bottom.
50 12.5 74.0 Near top, espe-
cially if present
with illuminat-
ing gas.
100 — — At bottom.
1 — — At bottom.
10 7.0 73.0 Near bottom.
1,000 1.3 6.0 At bottom.
— 4.0 74.0 At top.
10 6.0 40.0 Near top.
Simplest and
Most
Cheapest
Common
Safe Method
Sources
of Testing
Products Oxygen
of com- deficiency
bustion, indicator
sewer gas,
sludge.
Also issues
from car-
bonaceous
strata.
Manufac- CO ampoules.
tured gas,
flue gas,
products
of com-
bustion,
motor
exhausts.
Fires of
almost any
kind.
Industrial Detectable
wastes, odor
solvent, at low concen-
cleaning trations.
Chlorine Detectable
cylinder odor at low
and feed concentra-
line leaks. tions.
Incom- Detectable
plete com- odor.
bustion of
organics.
Common
air pollut-
ant, fungi-
cide.
Service 1. Combusti-
stations, ble gas indi-
garages, cator.
storage
tanks, 2. Oxygen
houses. deficiency
indicator.**
Manufac- Combustible
tured gas, gas indicator.
sludge
digestion
tank gas,
electroly-
sis of
water.
Rarely
from rock
strata.
Insecti- Detector tube
cide and
rodenti-
cide.
C-7