esd presentation

Download ESD Presentation

Post on 15-Oct-2014

102 views

Category:

Documents

5 download

Embed Size (px)

TRANSCRIPT

Process ESD systems

Valve Automation

ESD Systems

In an emergency, the ability to rapidly shut off fluid and/or gas flow can mean the difference between a manageable situation and a potential disaster

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 2

ESD SystemsNPS 24 Failure USA July 2003 Operating pressure: 1040psi

Pipe Blow out , No fire.

A well designed ESD system utilized to section off the pipeline, coupled with the absence of fire, made this one a non event!

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 3

ESD control solutions

20 years ago, a liquid spill or gas released was not a major event. Historically, sectioning valves on tank farms, liquids lines , aggressive pressurized gases etc.. have been electrically actuated due to their remote location. With today's environmental standards and required practices, the need to have ESD capabilities becomes prevalent and changes the operational function of sectioning valves. The lack of spring return capabilities from the different electric actuators designs on the market and its dependence on the supply source to operate and react to any given situation know makes the users vulnerable to dangerous situations and potential environmental catastrophes.

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 4

ESD Systems

How can we define an ESD valve/damper system? A packaged solution or sets of controls configured to make a rotary or linear actuator go to a desired position upon detection of a set or sets of event(s), autonomously or by dedicated signal. Emergency Shutdown (ESD) Valves and other failsafe valves and dampers assemblies, typically incorporate a spring-to-fail actuator to stroke the valve or damper in the event of an upset process condition.

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 5

ESD SystemsSupply

Open Side

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 6

ESD Systems

An actuator using either stored energy or reserved energy and configured to answer to the designation of Emergency Shut Down (ESD) valve will provide protection on; Pipelines Storage facilities in refineries LPG Chemical Tank farm Loading and unloading facilities Process Wellheads Liquids lines

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 7

ESD Systems

Such protection is indispensable on process medias such as; Ammonia Butane Propane Pentane Polypropylene, LNG NGL Mild acids

Diesel fuels Thermal oils Liquefied gasesValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 8

ESD systems

Typically used on on/off isolation or sectioning valves, controls can be devised to incorporate ESD logic into control valves packages. Most often installed on ball, plug, butterfly, gate and globe valves, solutions can be self contained or integrated into a ESD system. From local to remote triggering, we must first determined the parameter and means by which we will trip the actuator to fail close or open on each applications.

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 9

ESD triggers

Pressure sensing High & Low

All Pressurematic pilot valves provide high and low pressure sensing on gas or liquids and can be fitted with either an automatic or manual reset..

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 10

ESD triggers

Pressure sensing High & Low Pressure sensing High or Low

low (falling) pressure

high (rising) pressure

SP Pressure Pilot valves provide either high or low pressure sensing on gas or liquid and can be fitted with either an automatic or manual reset facility.high (rising) pressure c/w manual reset valve

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 11

ESD triggers

Pressure sensing High & Low Pressure sensing High or Low Fusible link

Fusible links are set to melt and activate an ESD system in the event of fire.

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 12

ESD triggers

Pressure sensing High & Low Pressure sensing High or Low Fusible link ROD (Rate of Drop)

The Bettis Deltamatic linebreak detection system is designed to automatically monitor pressure and send instrument pressure signal if a predetermined rate of pressure drop is exceeded

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 13

ESD triggers

Pressure sensing High & Low Pressure sensing High or Low Fusible link ROD (Rate of Drop) Linebreak system

In anticipation of customer requirements to provide a system that will not only provide linebreak protection but also monitoring and analyses of pressure characteristics, Bettis has designed our next generation electronic linebreak system. The LineGuard system incorporates everything Bettis has learned about pipeline protection which iswell, a lot. Again, Bettis leads the World in valve actuation systems.

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 14

ESD triggers Initiates valve shutdown on set high and low pipeline pressures. Initiates valve shutdown on a set rate of pipeline pressure fall. Monitors (every 5 seconds) and records pipeline pressure to provide a detailed insight into the pipelines operating characteristics prior and post to valve shutdown. Allows optimizing of setpoints for effective linebreak control. Remote communication and control using industry standard MODBUS protocol.LineGuard 2100

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 15

ESD triggers

Pressure sensing High & Low Pressure sensing High or Low Fusible link ROD (Rate of Drop) Linebreak system Hard wired Cellular communication Radio Communication Scada systems

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 16

ESD triggers

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 17

ESD triggers

Pressure sensing High & Low Pressure sensing High or Low Fusible link ROD (Rate of Drop) Linebreak system Hard wired Cellular communication Radio Communication Scada systems Where an independent monitoring systems from the main process system will send the selected valves into ESD mode.

ESD systems

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 18

ESD control solutions

With controls modification we can turn your control valve package into and ESD solution using both spring return actuators and double acting where we can use the line pack as the source of energy when available

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 19

ESD control solutions

ESD

120/60AC

4-20 ma inSupply80psi min 120 psi max

R

F

P4-20 ma out

ESD signal on Linear control valve ESD process & ESD hand pump

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 20

ESD control solutions

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 21

ESD On/Off solutionsThe Valve Automation division offers a complete array of solution with products such as;

Scotch Yoke & Linear DesignsValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 22

ESD On/Off solutions

SO

Low/high pressure ESD shut off Spring Return Actuator

OPEN

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 23

ESD On/Off solutionsThe Valve Automation division offers a complete array of solution with products such as;

Hydraulic Vane DesignsValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 24

ESD On/Off solutionsLow/high pressure ESD shut off Double Acting Actuator

SC

SO

CLOSE

OPEN

Valve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 25

ESD On/Off solutionsThe Valve Automation division offers a complete array of solution with products such as;

Helical Spline subsea DesignsValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 26

ESD On/Off solutionsThe Valve Automation division offers a complete array of solution with products such as;

Rack & Pinion DesignsValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 27

ESD On/Off solutionsThe Valve Automation division offers a complete array of solution with products such as;

Rack & Pinion DesignsValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 28

ESD On/Off solutionsThe Valve Automation division offers a complete array of solution with products such as;

Rack & Pinion intelligent solutionsValve Automation[File Name or Event] Emerson Confidential 27-Jun-01, Slide 29

ESD Self contained solutionThe standard SCH control system always requires at least one additional control component to initiate valve shutdown. This type of component is used to initiate the depressurization of the system allowing the actuators spring to move the mainline valve to its failed position. Most common of these shutdown devices are pressure pilot valves, solenoid valves and manual ball valves.The picture shows a Pressurematic Pilot fitted with a manual reset valve (PMR type) being used as the shutdown device.

PressureMatic Pilot Valve c/w