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'STANDARD OPERA-HUG PROCEDURE FOR SOLVENT TANK TRUCK LOADING
Steps 1. Spot truck at appropriate loading
station and lower access ramp to truck. 2. Examine PPG bill of lading, car rier bill of lading, and copy of customer order for product to be loaded, quantities of product, and any special loading or ship ping instructions. Check the SKU number and the systems order num ber on the PPG bill and the cus tomer bill.
3. Check the Motor Carrier number (MC No.) of the tank, and the test date(s) stenciled on the front of the trailer. Record MC No. and test dates on PPG Bill of Lading.
4. Check the interior of the trailer compartment(s) using the high in tensity light source on the rack.
5. Check the piping and valving on the tank.
Keypoints
2. This must be done to make sure customer gets correct product, and to comply with certain customer or sales office requests such as:
a. Sending certificate of analysis to customer.
b. Meeting special product specifi cations.
c. Sealing truck for shipment.
d. Amounts and size of hose required.
e. Drum nozzle, if required.
3. The MC number signifies certain design features of the tank, such as valving, safety relief devices, and materials of construction.
Solvents can only be loaded in certain type tanks (see chart Tank Trailer - MC Type number).
Do not load any truck which does not have the proper MC number or an expired test date.
4. Any trash, moisture, or chemical(s) which would contaminate or react with solvents must be removed from the trailer before it is loaded. This may require having the truck returned to the terminal for cleaning.
5. The tank must have, for each compart ment, a primary and secondary out let valve in the discharge piping and a dust cap for each discharge outlet.
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Steps
6. Check the discharge valves for operation with a small quantity of the appropriate product.
7. If required, check the trailer for safety relief devices and fusible disc caps.
Note: See Addendum No. 1
8. For vinylidene chloride ship
ments onlyT
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Check trailer for leaks. If trailer is suitable to load, insert a purging lance through open hatch and purge trailer about five minutes to clear air from trailer. Remove lance after purging and secure hatch cover.
Keypoints
The primary valve is commonly called the internal valve and is located at the compartment discharge opening.
The secondary valve is at the end of the discharge piping for each compartment.
6a. Primary valves must operate and must not leak through regardless of product loaded.
6b. When checking the internal valve, a container must be used to collect any drips. Any solvents collected must be disposed of ig an organics
( hn Hi f
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LalluLTro W S'/rTV, 6c. The spill containment pad is not
to be used for disposing of^solvents.
The only function of the contain
ment pad is collection of inadvertent
drips or leaks.
6d. Secondary valves must operate and must not leak through, regardless of product loaded.
6e. The operation of the valves is the driver's responsibility. You merely have to witness the operation of the valves to make certain they operate.
7. For the following products: Ethylene Dichloride Vinylidene Chloride The trailer must have at the top of each compartment at least one safety relief device and one fusible disc cap.
8. Trailer must be able to hold a nitrogen pad for vinylidene chloride shipments. Trailer must not leak. Check all fittings, valves, gaskets for leaks prior to loading. Use nitrogen when pressure checking and purging trailers.
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Steps
Keypoints
9. Determine the quantity of product to be loaded from applicable tables or charts. Check tank strappings to determine if the
tank will hold the quantity of material ordered. Foreman will provide information regarding any blends that must be loaded.
9. Do not load any truck over 79,000 lbs. gross.
10. If product is available in ship ping tank, open appropriate valves to loading pump and line up to rack and start pump.
10. Always leave recirculation valve to tank open slightly to protect pump seal when discharge valve is closed on rack. Check pumps for seal leaks, excessive vibration, noise, or low oil levels. Oil should be added by the tankerman and all other problems is reported to the foreman.
If product must come from operat ing unit, call the operator in unit and request transfer to product needed.
As soon as the transfer from Operations is complete, contact the operating unit so that the pumps and piping can be utilized by the
unit.
11. For vinylidene chloride and ethylene 11. Connect one lead from rack to truck,
dichloride shipments only.
and one lead from the loading line,
upstream of the discharge valve, to
Connect grounding leads to trailer
the trailer. Grounding must be done
prior to loading product.
in order to prevent static electri-
city build-up while loading flammable
products. Check grounding lead on
both ends with a continuity meter.
12. For solvents and ethylene dichloride 12. Spills must be avoided. Flush must
be directed to flush collection
system. Use meter to load truck,
Load trailer with product through
if operational, otherwise use out
^ opened hatch.^ Hush several gallons^ \ produe* tKrough difretwnye pi ping-of-"
age gauge. Do not load ethylene dichloride^through the meter.
truck to--remove hidden traoh or
(foR /hf'^yTTne : !* r />.,
moisture that may be present.--After loading, shut down loading pump.
Use stainless steel loading pipe when loading product.
13. For vinylidene chloride shipments on]-
Connect loading hose to discharge piping of truck. Connect vent hose between vent control system and vent piping atop trailer. Open
13. Personnel exposure to and releases to the environment of liquid and vapor vinylidene chloride must be avoided. Vent must go to control system.
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Steps
vent valves on control system and on trailer. Open discharge valves on trailer. Open loading line valve and load trailer with product using in-1 ine meter.
Keypoints
The trailer must not be opened after loading has started to prevent exposure or releases.
After trailer is loaded, clear loading line into truck using nitrogen. Shut down loading pump.
Clear vent line into trailer using nitrogen until pressure inside trailer is 12-15 psig. Disconconnect vent line from trailer
Check trailer again for leaks. A11 leaks must be stopped before shipment is made.
Trailer must be able to hold nitrogen pad to avoid oxygen intrusion into trailer and con tacting product.
14. Sample product in glass container.
14. Every shipment of solvents and
Properly identify sample and deliver
ethylene dichloride must be
to main laboratory for analysis.
sampled. Sample must be analyzed
u. p r / For Solvents - Use twe-hfrTf gallon
and cleared by main laboratory before shipment can be made.
glass bottle.
<9 For Ethylene Dichloride - Use < '9*34*0 amber stained bottle^>
r
For VDCM - Use stainless steel coiV.
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15. Attach product identification tag
15. It is PPG policy that this identi
to hatch cover and discharge line
fication be made before shipment
of every loaded compartment of the
is made. Use new identification
truck.
tags for every shipment.
16. Complete paperwork in office as follows:
1. Sign bills of lading. Do not sign demurrage tickets.
2. Identify on PPG bill of lading the content of each compart ment trailer and have driver sign to acknowledge same.
1. DOT regulations require signing of bill of lading.
2. Identify loaded as well as empty compartments. Driver must sign before he leaves plant.
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Steps 3.
Provide driver with placards, if truck must be placarded. It is driver's responsibility to placard truck.
4. Provide driver with trans portation safety data card for each product loaded on truck.
5. Raise access ramp to truck, disconnect grounding leads from truck, clear personnel from area, and release truck to weigh and depart plant.
Keypoints
3. Placard product shipments as follows:
Ethylene Dichloride - Un 1184 Vinylidene Chloride - UN 1303 Trichloroethylene - Un 1710
4. It is a PPG policy that this is is done and so states on the PPG bill of lading.
The traffic department normally provides the transportation safety data card. If there is no card notify the foreman.
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No. 1
ADDENDUM
Trailer must have at the top of a single compartment truck, at least one safety relief device and three fusible disc devices.
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