WT.050.200.001.UA.IM.0814
50-200 EVAPORATOR FOR CHLORINE
24
EVOQUA
W3T98237
WARNING: TO AVOID SEVERE PERSONAL INJURY DUE TO A CHLORINE
LEAK(S), INSTALL BOTH PRESSURE RELIEF SYSTEMS’ RUPTURE DISCS FOR
LEAK TESTING WITH DRY AIR OR NITROGEN NOW, BEFORE LEAK TESTING
WITH CHLORINE LATER.
e. Connect the evaporator inlet connection to the gas valve (rather than the
liquid valve) on the chlorine supply container. This temporary connection
is required to minimize the release of chlorine in the event that repairs are
needed. Do not open the gas valve yet.
f. Pressurize the system with the dry air or nitrogen supply to 150 psi and
check for leaks by applying soapy water to the pipe joints. If bubbles form,
a leak is present and must be corrected. If an alarm in either or both of
the pressure relief systems is actuated, a leak(s) in the rupture disc(s) is
indicated. If the disc is damaged, do not attempt to repair it; replace it with
a new one.
WARNING: TO AVOID SEVERE PERSONAL INJURY, BE FAMILIAR WITH
EMERGENCY PROCEDURES RECOMMENDED BY THE CHLORINE INSTI-
TUTE, INC. AND ANY APPLICABLE PLANT EMERGENCY PROCEDURES FOR
DEALING WITH CHLORINE LEAKS THAT DO NOT RESPOND TO NORMAL
REPAIR PROCEDURES. HAVE AN APPROVED GAS MASK AVAILABLE WHEN
TESTING FOR CHLORINE LEAKS.
g. Reduce the pressure in the system to slightly below the chlorine supply
pressure. Open the chlorine container gas valve and allow some chlorine
gas to enter the system. Turn off the chlorine, repressurize with the dry air
(or nitrogen) supply to 150 psi, and test for leaks with 26° Baume solution
of ammonia. If a cloud of white mist forms when the ammonia solution
is held near a pipe joint, a chlorine leak is present and must be corrected.
If a leak is discovered, operate the chlorinator to dispose of the chlorine-
in-air mixture. (If the evaporator is used without a chlorinator, provide an
alternate means of disposal. See the warning in paragraph 3.1.2.) If no
leaks are found, dispose of the chlorine-in-air mixture and proceed to the
next step.
h. Close all valves between the evaporator and the source of supply. Then
slowly open the gas valve at the chlorine tank car or the ton container and
test for leaks using the ammonia supplied with the evaporator. Open valves
progressively, testing for leaks as each new section is filled with chlorine.
If a leak is discovered, shut off the gas supply immediately, open the gas
discharge line of the evaporator and operate the chlorinator to dispose
of the gas. (If the evaporator is used without a chlorinator, provide an al-
ternate means of gas disposal. See the gas disposal warning in paragraph
3.1.2.) Repair the leak before proceeding.
Moisture, including atmospheric, when combined with chlorine, forms
hydrochloric and hypochlorous acids, which are highly corrosive.
!
!
Summary of Contents for Wallace&Tiernan 50-200 Series
Page 1: ...Series 50 200 Evaporator For Chlorine BOOK NO WT 050 200 001 UA IM 0814 W3T198237 ...
Page 2: ...SERIES 50 200 EVAPORATOR FOR CHLORINE BOOK NO WT 050 200 001 UA IM 0814 W3T198237 ...
Page 15: ...WT 050 200 001 UA IM 0814 50 200 EVAPORATOR FOR CHLORINE 4 EVOQUA W3T98237 ...
Page 75: ...WT 050 200 001 UA IM 0814 50 200 EVAPORATOR FOR CHLORINE 64 EVOQUA W3T98237 ...
Page 95: ...CHLORINE HANDLING MANUAL Cl2 BOOK NO WT 025 000 001 UA IM 0614 W3T98244 ...