Allow only reliable and trained personnel to
Handle containers carefully to avoid dropping or
Avoid hoisting containers as much as possible;
when hoisting is necessary, use safe lifting
Store cylinders in a cool place, away from
dampness, steam lines and fire, and in an upright
position secured from tilting and falling.
Keep protective valve caps on containers when
not in use; never tamper with safety devices on
Never connect a full cylinder to a manifold with
another cylinder, unless temperatures of both are
nearly the same.
When not withdrawing chlorine or when
cylinders are empty, keep the valves closed.
Disconnect the valves as soon as the containers
are empty, and check for chlorine leaks at the
valve outlets. Test for leaks by passing an
opened bottle of strong ammonia solution
around the valve. White fumes of ammonium
chloride will appear if there is any leakage.
Leaks around fittings, connections, and lines can
be detected in the same way. Do not apply
ammonia solution to plated metal parts because
it will remove the plating.
When chlorine is noticed, workers should avoid
panic, refrain from coughing, keep the mouth
closed, avoid deep breathing, keep the head
high, and get out of the affected area. Only
qualified personnel with suitable respiratory
equipment will be assigned to investigate and
correct the cause of chlorine leaks. When
chlorine is being discharged, close the container
valve immediately. When chlorine is escaping in
liquid form, turn the containers so the chlorine
escapes as gas, which will reduce leakage. Do
not apply water to the leak; this dangerous
practice causes corrosion that may increase the
leakage. Electronic chlorine gas detectors are
widely used in water plants today.
The handling of a persistent chlorine leak in a
plant is best left to the chlorine supplier.
Never apply a flame, blowtorch, or other direct
heat to chlorine containers; discharge them in a
room with a temperature of about 70°F.
Never ship a defective or leaky cylinder unless it
is completely empty. Paint Defective plainly on
all such cylinders.
Follow all regulations on shipping, storing, and
using compressed gas cyl inders.
Provide proper means of exit from areas where
chlorine is stored or used.
Never use a chlorine cylinder except to hold
First Aid for Chlorine Poisoning
Should any of the plant personnel become affected
by chlorine gas or be overcome by its action, the steps
for providing the victim first aid are as follows:
1. Remove the affected person at once to open air
and away from gas fumes.
2. Call a physician.
3. Place the patient flat on the back with the head
slightly elevated. Keep the patient warm and calm.
4. If conscious, give the patient one-half
teaspoonful of essence of peppermint or a moderate
stimulant. Do NOT give milk, as milk or cream will
usually curdle in the stomach and cause vomiting which
adds to the discomfort of the patient.
5. If able, the person affected should try not to
6. If the patient is unconscious and not breathing,
apply artificial respiration.
For almost any chemical spillage on personnel,
quick, thorough, and continued flooding of the
affected body area with water is the best general first-
aid measure. Call a medical officer for chemical bums,
and ALWAYS for eyes affected by the accident.
Operators must be particularly attentive to the
commonsense rules of good housekeeping in handling
lime. This chemical should be carefully stored in a dry