2.3.8 CETP Instructor PowerPoint Template

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Performing Pre-Unloading Cargo Tank Emergency
Discharge System Delivery Hose Inspections
Inspecting the cargo tank emergency discharge
system and the delivery hose assembly before
loading is essential to the safe and efficient
operation of the cargo tank motor vehicle (CTMV).

• In this module you will learn how to inspect
• Transport emergency discharge system
• Transport delivery hose assembly and plant hose
  assemblies
• Emergency shutdown systems

2.3.8 Student Book ? 2004 Propane Education Research Council Page 1
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Pre-Unloading Inspections

• Components that may be readily visible during
  unloading are
• The lower section of the pump
• Piping visible between the pump and other
  components
• Bypass valve(s)
• Liquid meter

2.3.8 Student Book ? 2004 Propane Education Research Council Page 1
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Pre-Unloading Inspections

• Components that may be readily visible during
  unloading are
• Line valves and hydrostatic relief valves
• Delivery hose assembly, including couplings
• Emergency shutdown stations and controls

2.3.8 Student Book ? 2004 Propane Education Research Council Page 1
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Pre-Unloading Inspections
Figure 1. Cargo Tank Discharge System Rejection
Criteria
2.3.8 Student Book ? 2004 Propane Education Research Council Page 1
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Pre-Unloading Inspections
Delivery Hose Assembly All delivery hose
assemblies were required to be permanently marked
with a unique identification number by July 1,
2000.
2.3.8 Student Book ? 2004 Propane Education Research Council Page 2
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Pre-Unloading Inspections
Worn Reinforcement
Cut in Hose
Cut in Hose
2.3.8 Student Book ? 2004 Propane Education Research Council Page 2
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Pre-Unloading Inspections
Worn Coupling
Missing or Corroded Bolts
Worn (Slipping) Coupling
2.3.8 Student Book ? 2004 Propane Education Research Council Page 2
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Monthly Hose Inspections
Step 1 Lay the hose out as straight as possible to avoid kinking.
Step 2 Check for cuts, abrasion, soft spots, blisters, loose outer covers and bulges. Small cuts and nicks in the outer cover should generally not be cause for hose replacement, unless the rubber involved is loose or the reinforcement is exposed.
Step 3 Examine the fitting, plus 18 back from the fitting, by pressing the hose with your thumb to detect any soft spots or bulges. If they exist, remove the hose from service immediately. This hose may be returned to service provided the requirements of 7 are satisfied.
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Monthly Hose Inspections
Step 4 Inspect each coupling for slippage, evidenced by misalignment of the coupling on the hose end and/or scored or exposed. Loose, missing or severely corroded bolts in bolt-type couplings require the hose to be taken out of service.
A hose subjected to unusual abuse, such as
stretching, kinking, or flattening by a vehicle,
shall be removed from service immediately.
2.3.8 Student Book ? 2004 Propane Education Research Council Page 3
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Daily Hose Inspections
The driver (or unloading operator) must also
perform a post-delivery hose check after each
product transfer operation as required by U.S.
DOT regulation 49 CFR 180.416(c). Visually
inspect that portion of the delivery hose
assembly deployed during the unloading.
2.3.8 Student Book ? 2004 Propane Education Research Council Page 3
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Inspecting Emergency Shutdown Systems
Manual Shutdown Stations Manual shutdown
stations must be located at the front and rear of
the transport trailer, diagonally across from
each other. (Typically, left front drivers side
right rear.) They should be examined and
operated as part of the initial pre-transfer
discharge system inspection for the day. If
operating levers, cables, rods, or switches are
inoperable, severely corroded, seized, or
otherwise damaged, the CTMV should not be
operated until appropriate repairs are made and
tested.
2.3.8 Student Book ? 2004 Propane Education Research Council Page 4
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Inspecting Emergency Shutdown Systems
Off-Truck Remote Shutdown Devices The operator
is required to successfully test the activation
device within 18 hours prior to the first
delivery of each day. Some companies require
drivers to check the system as part of the
pre-trip inspection.
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Inspecting Emergency Shutdown Systems
Off-Truck Remote Shutdown Devices For a wireless
transmitter/ receiver, the person conducting the
test must be at least 150 feet from the cargo
tank and will have the cargo tank in their line
of sight .
Operators of CTMVs equipped with
transmitter/receiver off-truck remote shut-down
systems must have the transmitter with them at
all times during the unloading operation.
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Inspecting Emergency Shutdown Systems
Note 49 CFR 177.840(l) requires, By January 1,
2000, each operator of a CTMV transporting a
liquefied compressed gas must carry on or within
the CTMV written emergency discharge control
procedures for all delivery operations. The
procedures must describe the CTMVs emergency
discharge control features and for a passive
shutdown capability, the parameters within which
they are designed to function. The procedures
must describe the process to be followed if using
a facility-provided hose for unloading. The
operator should verify the procedures are in fact
located on the transport.
2.3.8 Student Book ? 2004 Propane Education Research Council Page 5
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Time to See If You Got the Key Points of This
Module

• Complete the Review on page 6.
• See if you are ready for the Certification Exam
  by checking off the performance criteria on page
  7.

2.3.8 Student Book ? 2004 Propane Education Research Council Pages 6 7