b. DRAINING TANK
DO NOT perform draining operations in an electrical storm or if a storm
is threatening. Keep open flames or other sources of ignition, such as
welding and cutting torches and ordinary electrical equipment, away
from area where draining operation is in progress. Sufficient fire extin-
guishers MUST be present and manned. Failure to follow this warning
will result in serious injury or death to personnel.
Connect bonding and grounding connection before beginning draining
operations. Maintain bonding and grounding connection until after all
draining is completed. DO NOT connect semitrailer grounding cable to
semitrailer grounding stud. Connections must be made to clean, un-
painted surfaces. An unbonded and ungrounded or improperly bonded
and grounded semitrailer could produce a spark. The resulting explosion
will cause serious injury or death to personnel.
Personnel engaged in draining operations must not wear wool, nylon,
silk, rayon, or other clothing that generates static electricity. Wear clean
cotton clothing with no metal zippers. Remove all contents from pock-
ets. Wear rubber boots and gloves to keep fuel off skin. Use cotton
cloths for cleaning purposes. Before climbing onto semitrailer, grasp
static ground wire to discharge all static from body.
Give IMMEDIATE medical attention to personnel exposed to hydrocarbon
or toxic vapors. Signs of distress are weakness, nausea, coughing or
intoxication, nosebleed or cramps, or other unusual symptoms. Quali-
fied personnel able to administer artificial respiration and simple first aid
must be present.
Park semitrailer 100 ft. (30.5 m) from any building, source of ignition, or sewer system. Raise
front of semitrailer by lowering landing gear enough to maintain tank sump at the lowest
position. Close all windows and doors of nearby buildings to prevent flow of vapors into areas
where flame and other sources of ignition may exist.
Place sufficient fire extinguishers 50 ft. (15.25 m) upwind and attend with qualified personnel.
Place conductive metal or galvanized pail under strainer assembly (see paragraph 1-15).
Ground pail to tank and to semitrailer's common ground. Remove in. (6.4 mm) center plug
from strainer assembly and allow all fuel to drain.