why hipps ?? we have 600# (high pressure bearing) pipeline from well pads till production header....
TRANSCRIPT
![Page 1: Why HIPPS ?? We have 600# (high pressure bearing) pipeline from well pads till production header. After that, we have 150# (low pressure bearing) pipeline](https://reader035.vdocuments.us/reader035/viewer/2022081515/5697bfdf1a28abf838cb2dc9/html5/thumbnails/1.jpg)
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Why HIPPS ??
• We have 600# (high pressure bearing) pipeline from well pads till production header.
• After that, we have 150# (low pressure bearing) pipeline due to economy & usage purpose.
• Due to some abnormality, if high pressure reaches 150# pipeline, then it may cause explosion to pipeline & hence vessels in trains area.
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High pressure Bearing Pipeline Low pressure Bearing Pipeline
FLOW
107 psi
Onsite Normal Operation (Without HIPPS):
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High pressure Bearing Pipeline Low pressure Bearing Pipeline
FLOW
136 psi
If Pressure IncreasesHigh Pressure
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WHAT IS HIPPS???
HIGH INTEGRITY PRESSURE PROTECTION SYSTEM
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HIGH INTEGRITY
Using 3 transmitters in downstream (works on 2oo3 logic).
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PRESSURE PROTECTION
Safety Integrity Level – 3High pressure from formationBack pressure from trainsPipe rating ( 600# to 150# )
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Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems
IEC 61508 and IEC 61511 standards for design, implementation and management of safety systems. SIL (Safety Integrity Level ) - is a measurement of performance required.
SIL 3 In accordance with IEC61508 and IEC61511
Low demand PFD-Frequency of demand of operation is < 1 per year
0.001-0.0001
STANDARD- International Electro Technical Commission (IEC)
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1
LOGIC SOLVER
107 PSI
107 PSI
107 PSI
107 PSI
Onsite Normal Operation (With HIPPS):
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LOGIC SOLVER
1136 PSI
136 PSI
136 PSI
136 PSI
If pressure increases:
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1
LOGIC SOLVER
136 PSI
136 PSI
136 PSI
136 PSI
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LIST OF INSTRUMENTS
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LIST OF INSTRUMENTS
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TRANSMITTERS
PSIT-2011 & 2021 for UpstreamPSIT-2010 A/B/C & 2020 A/B/C for
DownstreamPSIT-201 & 202 for Lube Oil
(All PSIT’s are of ROSEMOUNT and Model of series 3051S)
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PSIT-201 & 202
Set Point – 1800 to 2700 psi
Purpose To start/stop the pump
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PSIT
SPEIFICATIONS
Type Diaphragm Seal type
Maximum Temperature 80ºC
Minimum Temperature -40ºC
Diaphragm Material Hasteloy C 276
Fill Fluid Material Silicon
Output Signal Type 4-20mA
Digital Communication std HART
Trip SP 135psi
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SpecificationsType Ball Valve (Make- Valve
Technologies)Size 30”
Opening time Upto 30 minutes
Closing time Upto 5 seconds
Design Pressure 91.7 bar
Design Temperature 130ºC
Failure Action Fail to close
Hydraulic Oil used ISOVG46
XSV
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TRIPS FOR HIPPS VALVES:
1. Downstream pressure of HIPPS: 2oo3 logic.
2. When the pressure of air purge to HIPPS panel falls below 0.15 mm of water column (gauge available in field).
3. Position feedback of the HIPPS valve (any one) not available when valves are in OPEN condition: After a time delay of 40 min, both the HIPPS valves will close.
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START-UP CONDITIONS
1. Pressure difference between upstream & downstream PSIT must not exceed 2.5 bar.
2. Upstream pressure should not exceed 100psi.
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LOGIC OF 2oo3
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BASIC LADDER LOGIC OF 2oo3
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HYDRAULIC DIAGRAM
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MOTOR
DETAILS
Make Crompton Greaves
Voltage 415v +/- 6%
Type 3ɸ AC Squirrel Cage Induction Motor
Full Load Current 3.25 A
Full Load Speed 1415 RPM
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• 1300 PSI PRESSURE IS SUFFICIENT FOR KEEPING THE VALVE IN OPEN POSITION.
• Pump stops at 2700 PSI.
• If the circuit hydraulic pressure is • < 1800 PSI - ONE AMONG THE TWO PUMPS WILL START.
• < 1400 PSI THEN BOTH THE RUNS WILL START AUTOMATICALLY.
CONTINUE:
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PLC
AI DI DO
PSIT-2011/2021 Limit switch of XSV XSY 2010 A1-1/2, XSY 2010 B1-1/2, XSY 2010 A1-1/ 2, XSY 2010- B2- 1/2
PSIT-2010 A/B/C (ZSO/ZSC- 2010A/2010B) XSY 2020 A1-1/2, XSY 2020 B1-1/2, XSY 2020 A1-1/ 2, XSY 2020- B2- 1/2
PSIT-2020 A/B/C (ZSO/ZSC-2020A/2020B) Trip lamp, Fault lamp
PSIT-201/202 Trip RESET, Fault RESET
•We have S7 400 PLC for HIPPS package & S7 200 PLC for hydraulic circuit.
•We are using two PLC’s. One for each stream for production redundancy.
PLC I/O’s
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Specifications of S7 400 PLC:
1. Modular PLC.2. Handle large module.3. Used where high processing speed & deterministic response time is required.4. Used for data intensive tasks (data parallelism).5. Have additional line monitoring diagnostic feature- generates alarm when wire breaks or short circuit.
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Specifications of S7 200 PLC:
1. Shoebox PLC
2. Less Memory.
3. Handle small module
4. Cost effective.
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ARCHITECTURE
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PLC PURGING SYSTEMDETAILS
Make Pepperl + Fuchs
Model 3003-LPS-C1-YZ-VM
Supply Instrument Air
Overpressure Protection Breather
Range 5.5-8.3 bar
Temp. Range -29 to 50°C
Purpose To remove & prevent flammable gas or vapor accumulation.
Note: Before opening the HIPPS panel, the purge pressure low trip logic should be BYPASSED by making the trip BYPASS switch “ON”. (switch available near HIPPS panel).
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Cause & Effect
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THANK YOU