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SECTION III - SYSTEM OPERATIONS
4-15 Commissioning
When all the equipment and systems have been installed, serviced, and inspected as described in Chapter 3, the TPT is
ready for commissioning. The term commissioning is meant to include purging and initial line fill. Commissioning is not
intended to include a complete fill of the storage tanks. The procedures described below, if handled properly, are an
excellent training exercise for routine operations which will be conducted at higher rates and pressures. The
recommended steps to be taken are as follows.
4-15.1 If the facility has just been completed and given a thorough inspection, it is not necessary to reinspect it. If,
however, the unit has been in standby for a period of time, a very thorough pre-operating inspection, as called for in para.
4-5, is recommended before commencing commissioning operations.
4-15.2 If the unit has been previously pressure tested, as described in para.'s 3-29 through 3-29.5, an additional pressure
test is not required. If this prior pressure test has been made with water, any remaining water which has not been
satisfactorily removed in the dry out procedures described will be driven to the 5,000 bbl secondary module tanks in the
procedures described below. It will then be necessary to drain off the accumulated water from the tank bottoms.
4-15.3 If the unit has not been previously pressure tested, and operating management chooses to test with fuel, this can
be accomplished after the line fill in the procedures outlined below. All of the procedures and cautionary measures
described in para. 3-29 through 3-29.5 are recommended.
4-15.4 The source of fuel and entrance pressure for purging the systems can be from the pipeline system via the
switching manifold or from tanker trucks feeding the switching manifold through the tanker-truck receipt manifold. The
latter is recommended, if available, because of the relatively low and variable feed rates desired.
4-15.5 The primary function of the purging operation is first to remove air from the system and secondly to flush
contaminants from the system. The process of removing air from the system will cause a relatively high venting rate
from the tank vents. The vent gas is likely to be flammable due to mixing with fuel vapors and droplets. Special
precautions must be taken due to this condition.
WARNING
VENT GASES DURING PURGE
The vent gases during purging operations may be a flammable mixture of fuel vapors and air.
Special precautions to eliminate ignition sources in the area must be taken. All "No Smoking"
and other rules outlined in para. 4-7 must be strictly enforced. Fire suppression equipment
must be stationed near the tank modules.
4-15.6 These procedures are written on the basis that extreme care has been taken to assure internal cleanliness as
described in the installation procedures in Chapter 3. If, however, a certain section of the system is known to contain, or
suspected of containing, contaminants such as dirt, construction waste, or water, it is recommended that this section be
disconnected, flushed out with water, drained, and dried before purging operations commence.
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