Eastern Energy DuraSite 3000 User manual
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
2
Table Of Contents
1. Introduction 3
2. About this Manual 3
3. Contacting YZ Systems 3
4. Vessel Components 4
5. Specifications 5
6. Application 6
7. Theory of Operation 7
8. DuraSite Installation & Use 8
9. Cylinder Maintenance 10
10. Diagrams
DuraSite Sample Vessel 12
Adjustable Relief Valve (Optional) 13
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
3
1. Introduction:
Congratulations on your purchase of the DuraSite
Sample Vessel. You've made a wise measurement
investment for your company.
Before you begin installation, insure that all of the
necessary components are present. TFE tape,
Stainless Steel Tubing, and Tubing Fittings may be
required.
2. About This Manual:
This User's Guide provides a step-by-step descrip-
tion of the information you need to operate the
DuraSite Sample Vessel.
3. Contacting YZ Systems, Inc.:
If the answer to your question can not be found
within this manual please contact YZ Systems at
1.936.788.5593. When calling please have on hand
this manual for potential review. Also be prepared to
provide the following:
The model and serial number of the DuraSite
Sample Vessel. The model and serial number are
printed on the Pre-Charge head of the sample
vessel.
This manual and its version number, listed on the
front cover.
A description of the difficultly and the activity at the
time of occurrence.
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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4. Vessel Components:
The primary components of the DuraSite Sample
Vessel are illustrated here.
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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5. Specifications:
Working Pressure: 1800 psi*
Tested Pressure: 3000 psi*
Visual Level Indication: Magnetic
Primary Materials: 316 Stainless Steel and Aluminum
Carrying Case: Optional
Size: 3000 cc
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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6. Application:
Accurate sampling and storage of natural gas and liquid
hydrocarbons equates to revenue, and in many cases
a large amount of revenue. One of the major links in the
sample storage process is the sample container or
sample cylinder.
In recent years, the Constant Pressure Cylinder has
become the storage cylinder of choice, principally due
to it's unique design. This type cylinder allows the
collected product to be stored at a constant pressure
throughout the sample period and/or in final lab
analysis, or lab use.
The DuraSite Sample Vessel permits the user to
remove a liquid or gas hydrocarbon sample from a
pipeline, sampling device, or other location. This is
accomplished without changing the pressure of the
product or exposing it to a contaminant fluid. If
properly used and maintained the DuraSite will pro-
vide many years of safe, accurate and clean sample
storage.
The DuraSite is a very safe device to use. As with any
equipment dealing with flammable products, it is
mandatory that a good, thorough operator training
procedure be established prior to use.
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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7. Theory of Operation:
The DuraSite
Sample Vessel
The DuraSite Sample Vessel consists of a metal
cylinder precisely machined and polished on the
inside surface with removable end heads for easy
access to the inside of the cylinder. The heads are
drilled and tapped to incorporate isolation valves,
gauges, and pressure rupture disc assemblies.
Contained inside of the cylinder is a moving piston
fitted with seals to ensure a leak-free seal between
the sample and pre-charge side of the cylinder.
The piston is able to move freely within the cylinder
while maintaining the segregation between the two
ends of the cylinder. This piston also incorporates
a set of magnets to interface with the magnetic
sensor to determine the level of the sample fluid
within the vessel. A visual level indication can be
observed on the DuraSite vessel by the position of
the magnetic level marker on the vessel.
In operation an inert gas pressure is applied to the
pre-charge end of the sample cylinder. This inert
gas pressure should exceed the anticipated
equilibrium vapor pressure of the product by
100psi. This will ensure the sample is maintained
in a single phase.
Product should be introduced to the cylinder from
the product end. The cylinder should never be filled
over 80% full by volume, to allow a safe cushion
for any expansion of the product due to changes in
the temperature.
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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Typical use of the vessel would be as follows:
Step 1: In The Lab
Connect a regulated inert gas supply to the pre-charge
valve. The product valve should be open. By carefully
controlling the pre-charge valve and the regulator, the
vessel can be slowly charged with pre-charge gas
(NOTE: This should be done slowly to prevent slam-
ming the piston down to the opposite end). The pres-
sure on the pre-charge pressure gauge should be
brought to a reading of 10-50 psi above the expected
pressure of the product in the field. Close the pre-
charge valve and disconnect the gas supply. Check the
pre-charge valve, relief device, and the pre-charge
pressure gauge for leaks. Any leaks should be stopped
before continuing. The vessel should be placed in a
padded carrying case and made ready for field use.
Step 2: In The Field
Connect the pre-charged sample vessel to the product
supply (NOTE: the pre-charge pressure gauge reading
should be greater than the product supply pressure
reading. If not, repeat Step 1 above).
Step 3:
Once the vessel is connected to the product supply, it
is necessary to vent a small amount of product prior to
filling the vessel. This assures fresh product and
removes any air or gas when dealing with liquids. This
can be done by loosening the product purge valve a very
small amount until the product is purged. After thorough
purging, the product purge valve should be tightened.
Step 4:
The product pressure gauge reading should be 10-50
psi below the pre-charge pressure gauge reading. By
carefully opening the pre-charge valve, the pressure
becomes equalized. The pre-charge valve should be
carefully controlled so as to not vent the pre-charge gas
too fast. The pre-charge port should then be connected
to a pipeline connection or relief valve (page 11), which
will allow movement of the piston while maintaining pre-
charge on the vessel.
8. DuraSite Installation & Use:
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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Step 5:
When the vessel becomes a maximum of 80% full
(see volume indicator), all valves should be closed.
The product connection is slowly broken in order to
vent any trapped product. After vessel removal, all
connections should be checked for leaks and the
pre-charge and product valve ports capped to pre-
vent leakage.
Step 6:
The vessel should be labeled and placed back into
the padded case and made ready for shipment.
Step 7: In The Lab
Prior to analysis, the product should be mixed. This
is accomplished simply and efficiently by inverting
the vessel end-over-end, causing the mixing ball to
fall through the product. Approximately 10-12 trips of
the mixing ball through the product assures a ho-
mogenous solution.
Step 8:
The regulated pre-charge gas should be recon-
nected to the pre-charge side of the vessel. The pre-
charge gas supply should remain open during analy-
sis.
Step 9:
Purging a small amount of product from the vessel
removes unmixed product from the tee, relief device,
gauge, etc. The unit can now be connected to a
chromatograph and the product analyzed.
Step 10:
After analyzing, the remainder of the product should
be dumped and the vessel properly cleaned. Normal
cleaning can be accomplished by rinsing the product
end with a petroleum solvent and flushing with ac-
etone. If a more thorough cleaning is required, the
vessel should be disassembled.
8. DuraSite Installation & Use:
WARNING: A sample vessel should never be
filled to more than 80%. This allows a 20% pre-
charge cushion to absorb thermal expansion of
the product.
Shipping: Extreme care should be taken when
preparing a vessel for shipment. Both valves should
be capped to prevent possible leakage. The vessel
should be placed in a snug-fitting, well-padded and
durable case. All applicable DOT regulations should
be adhered to.
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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Maintenance:
Time, Temperature, Pressures, Sample Quality, and the number of Sample Cycles will all have
an affect on the need for maintenance.
· Preventative Maintenance
In general, a preventative maintenance program is for the purpose of trying to anticipate possible
maintenance that will be required and to choose when to perform that maintenance prior to the actual
need for the maintenance, thus eliminating most emergency responses for the maintenance, or
possible ending up with out a sample.
· Reactive Maintenance
This is when maintenance is only performed as a reaction to the cylinder not being capable of
containing a sample properly due to some type of component fatigue.
Each cylinder must be visibly reinspected at least once a year for deterioration of seals,
scratches, dents, and gouges. Components that are deteriorated or damaged must be replaced
by factory specified parts as shown on YZ drawings. Components may be replaced by the
factory or user, observing Tie Rod Nut tightening torque values. Additionally at least once a
year, the end caps, tie rods, and cylinder must be thoroughly cleaned with appropriate solvent
recommended by the manufacturer. Replace rupture disc every year under normal conditions.
A more frequent change out of the rupture disc may be necessary due to corrosion, fatigue,
temperature, or adverse conditions. These factors must be evaluated by the user through
actual service experience. However; if the disc is not changed periodically when exposed
to these conditions, premature failure (due to elapsed time or pressure) of the rupture
disc may occur, thereby discharging the process media.
Recommended spare parts:
Part Number Description Qty.
D3-0052 3" DuraSite Seal Repair Kit 1
A3-0084 1800 psi Rupture Disc 2
9. Cylinder Maintenance:
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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Rupture Disc Design:
A rupture disc is a thin wafer of metal placed in a specially designed port for the purpose of
protecting the device and anyone near it from danger due to over pressure of the device. If the
device is over pressured this device SHOULD burst.
This overpressure may be a result of many factors, a couple of the most common causes are
overfilling of the vessel, or a rise in temperature of a vessel that is full of liquids with no gas
expansion area. Rupture disc typically used on our DOT sample vessels are rated at a
pressure, but has a typical tolerance of +/- 10% @ 72oF. All fluctuations of pressure and/or
temperature begin the weakening process of the rupture disc. that leads to required
maintenance.
· Safety Precautions Before Installation
1. The special standard flat seat rupture disc is a precision instrument and must be handled
with extreme care. Rupture discs should be installed only by qualified personnel familiar with
rupture discs and proper piping practices.
2. Do not install rupture disc if there is any damage in the dome area. A damaged rupture disc
is any rupture disc with visible nicks or dents.
3. Do not install a rupture disc that has been previously installed and removed from the disc
holder, as reinstalling may adversely affect the joint sealing capabilities and/or performance
of the rupture disc
· Replacement Procedure
1. Assure that the vessel has no pressure left in it.
2. Remove the rupture disc. retaining nut.
3. Remove the old Rupture Disc, and discard it.
4. Remove the old Kel-F/TFE washer, and discard it.
5. Inspect the retaining nut surface where it contacts the rupture disc, for any nicks, or
deformities. Replace it if any are found.
6. Inspect the seat area in the disc pocket for any nicks, or deformities. Replace it if any are
found.
7. Install the new TFE washer in the disc pocket.
8. Lubricate the face of the retaining nut that contacts the rupture disc, with a thin coat of light
weight grease.
9. Install the new rupture disc wafer in the pocket on top of the TFE washer with the dome side
of the disc facing up.
10. Install the retaining nut & tighten finger tight.
11. Final tightening of the retaining nut should be done with a Torque Wrench ONLY.
Torque to PRECISELY 15 Ft. Lbs.
9. Cylinder Maintenance:
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
12
Diagram #1: DuraSite Sample Vessel
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
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Diagram #2: YZ Systems Adjustable Relief Valve
(Optional)
BODY
ADJUSTMENT SCREW
INLET HEAD
1/4" NPT
STANDARD INDICATOR
RV-
Relief Valves, Adjustable Pressure Model Number Options
0.......................................... 0-15 psig
1.......................................... 0-100 psig
8......................................... 100-800 psig
18....................................... 800-1800 psig
23...................................... 1800-2300 psig
Discharge Connection
-S Standard visual indicator
-4 1/4" FNPT
-8 1/8" FNPT
Relieving Pressure
Factory set per customer specification
Example: Model RV18-8-1450 = relief valve, 800-1800 psig range, 1/8" FNPT discharge connection
with relieving pressure set at 1450 psig per customer specification
EASTERN ENERGY SERVICES PTE LTD.
60 Kaki Bukit Place #02-19 Eunos Tech Park Singapore, SG 415979 Singapore
Telephone: +65-6748 6911 Fax: +65-6748 6912
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