Chemical & Process Technology_ 12 Features Required for Shutdown Valve (SDV)

7/25/2019 Chemical & Process Technology_ 12 Features Required for Shutdown Valve (SDV)

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mical & Process Technology: 12 Features required for Shutdown Valve (SDV)

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12 Features required for Shutdown Valve (SDV)

Saturday, October 20, 2007

Shutdown Valves (SDV) are common apply in oil and gas productionsystem for safe and

proper isolation purpose to minimize escalation of hazardous from one system to another

system. General shutdown valve is controlled by a high integrity Emergency Shutdown

System (ESDS).

A shutdown valve shall equipped with the following features :

i) Tie Shut Off (TSO)

- Zero/minimum leakage shall be expected for a device act as shutdown valve. Generally a

Shutdown valve seat leakage shall pass the seat leakage testing per API 508 and/or ISO

5208.

ii) Firesafe

- shutdown valve is expected to promptly even though it expose to external fire

attacks. thus, shutdown valve body shall be fire rated according to API 607 for soft seated

valve or API 6FA for API 6A & API 6D valves or BS 6755 Part 2.

iii) Fast action (From Full Open - Full Close)

- A shutdown valve shall act fast to minimize the escalation of hazards. Generally a quarter

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equipment. Regardless of vessel/column/drum/tank

we ever as ourse ow muc amage we ave ma e

to our environment ? I m sure many of us.......

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ball valve is the excellent device in quick action. As rule of thumb, shutdown valve shall be

capable of begin it closing action within 10 seconds of activation, and time taken from Full

open to Full Close is within 1-2 seconds per inch of shutdown valve size. However, this

shall be compliant to overall safety philosophy. Proper selection and sizing of actuator to

ensure above requirements are fulfilled.

iv) Minimum passing (during closing of shutdown valve)

- The feature is required to minimize the potential of overpressure of Low pressure system

and spurious trip. A shutdown valve with equal% characteristic (most ball valve will have

this feature. However, this shall be confirmed with valve supplier) is preferred type. With

equal% characteristic, it can operate with 10% valve closure give 20% flow reduction, 20%

closure give 50% closure...the closure of valve is fast and minimize inventorypassing.

v) Minimum disturbance / turbulence to process fluid

- This feature is to minimize unnecessary energy lost. Reduced Bore (RB) ball valve having

hole in the middle would minimize flow direction change and turbulence. Full Bore (FB) ball

valve virtually like a pipe- significantly minimize energy lost.

vi) Fail-safe

- A shutdown valve actuator shall pneumatic/hydraulic fail-safe spring-return type.

Generally a shutdown valve failed to close (FC). Electrical driven type shall not be used.

vii) Manual field reset

- A shutdown valve shall be reset manual at field. The operator shall ensure the system is

clear and safe and reset on site. No remote reset is allowed.

viii) Clear physical indicator- Shutdown valve shall be equipped with visible external valve position indicators to provide

clear positioning and status of a shutdown valve.

ix) Position switches

Position switches shall be provided on shutdown valve to provide clear positioning and

status of a shutdown valve to control room.

x) Partial Stroke Testing of Shutdown Valve

A shutdown valve in critical service e.g. Pipeline outgoing and incoming shutdown valve

(ESDV) will required periodically partial stroke testing in order to maintain / increase it

reliability, availability & SIL level.

xi) Accumulator

Some shutdown valve may be equipped with accumulator to facilitate valve stroking and

/or reopen in the event maloperation.

xii) Second Solenoid valve

Shutdown valve in critical service may be equipped with second solenoid valve to increase

reliability and availability.

Above has presented 12 features of shutdown valve. Some operating company may have

their additional requirements and limitation on shutdown valve.

Related topics

ERRATA - API Std 521, Pressure Relieving and Depressuring

Systems

Requirement of overpressure protection devices on system design

to PIPING codeESD Selection Guide, Metso Automation, Issue 4/2001

Partial Stroke Testing of Emergency Shutdown Valves,ACM Automation

Achieving High SIL Ratings with Partial Stroke Testing of Valves,ACM Automation

Sanseco Valvewww.sansecovalve.comThe best value-quality, service & price-all thetime

Blogger Caroline Mariaob.no

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7 Comments:

gad480said...

Regarding to Point (x) Partial stroke Testing of shutdown valves i would like to

know when can i aplly preventive maintenance (PM) to shutdown valves and

what is your refrence standard (API)

April 22, 2008 4:46 PM

gad480said...

Regarding to Point (x) Partial stroke Testing of shutdown valves i would like to

know when can i aplly preventive maintenance (PM) to shutdown valves and

what is your refrence standard (API)

April 22, 2008 4:47 PM

Webwormsaid...

My opinion is ...

Subject to company safety and maintenance policy.

You may refer to other opinions by Click HERE

April 23, 2008 12:26 PM

hydraulic cylinder repairsaid...

Interesting article. Thanks for sharing.

September 22, 2008 8:23 PM

Les hennes tampongtips og bestill gratisprver avob her!

Valve Manufacturerwww.taito-valve.comChina valve factroy ,supply various Valve,ISO,API-6D,CE certificate

The webpage c

Most likely causes:
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protected]://webwormcpt.blogspot.com/search/label/Emergency%20Shutdownhttp://webwormcpt.blogspot.com/search/label/Loss%20Preventionhttp://webwormcpt.blogspot.com/search/label/Overpressure%20Protectionhttp://webwormcpt.blogspot.com/search/label/Overpressure%20Protectionhttp://webwormcpt.blogspot.com/search/label/Safetyhttp://no.indeed.com/?indpubnum=2492491651804790&chnl=ad_320x250/http://no.indeed.com/jobs?q=Process+engineer&l=&indpubnum=2492491651804790&chnl=Ad_320x250http://no.indeed.com/jobs?q=Process+engineer&l=&indpubnum=2492491651804790&chnl=Ad_320x250http://no.indeed.com/pagead/clk?mo=r&ad=-6NYlbfkN0Aufku41FG2QFivGt0YeQkOHR7VtJ9-sSLOm182BxCqn6psquB0hZgP39xUWFkT-y4Ii1q72KqPiMzeCVrg8DSAPGmaMWmUkBgE47z28mL224EspsIq2bS9UvM-KCcwqwciPykLwGu5ir8v07fULSYNQQMg5jhmDDlajYw94To5MVL7brc2AcNlDmU5Ir-fCl-D6kreZQgl0h0BBlz3Uj1o_2D3Q9t7SFot0PB8sGGQ6FKOywt2v_sQB_FXWPlOUi1vrHQfzoazq31LQa_Ok7CYxalcJRhSDbSTdWVr3uNHyhftSjkDj3jfzSTkkfF4OVI5MGWrFNWfwR-mREfHAur-c2E6aHPaCGfimjW5UgEJK8omUuSFDlMGbCpKD_GPEIkUXwV9tVq87U_4n-BbVELAn4Y8DBzdTjM=&p=1&chnl=Ad_320x250http://www.blogger.com/profile/16245701665250139418http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1208907960000#c7615750191280096548http://www.blogger.com/profile/16245701665250139418http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1208908020000#c1089740639374410454http://www.blogger.com/profile/11991072858350648438http://www.blogger.com/profile/11991072858350648438http://www.eng-tips.com/viewthread.cfm?qid=215345&page=1http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1208978760000#c1294683861296233318http://www.meaincorporated.com/http://www.meaincorporated.com/http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1222140180000#c3522838646705536234http://googleads.g.doubleclick.net/aclk?sa=l&ai=BRyhMWLu7TqicGoiy4QSwwZHyAe-IlvgB55by9R7AjbcBwNB3EAMYAyD25awIKAM4AFCw2LuS_f____8BYMPcpIWYGKABoaXn5QOyARd3ZWJ3b3JtY3B0LmJsb2dzcG90LmNvbboBCjMzNngyODBfYXPIAQHaAVNodHRwOi8vd2Vid29ybWNwdC5ibG9nc3BvdC5jb20vMjAwNy8xMC8xMi1mZWF0dXJlcy1yZXF1aXJlZC1mb3Itc2h1dGRvd24tdmFsdmUuaHRtbOABA4ACAakCmm1zUBEjhT7IAs-dihioAwHIAxfoA8cG6AOTBegDDPUDCgAAxA&num=3&sig=AOD64_2qzX1P5audefB4l03bgORxgl7BFQ&client=ca-pub-9565190731394229&adurl=http://www.taito-valve.com/products.asphttp://www.blogger.com/email-post.g?blogID=8968604820003269863&postID=6448274264620002056http://www.addthis.com/bookmark.php?v=120&winname=addthis&pub=webworm&source=men-120&lng=no&s=&url=%3Cdata%3Apost.url%2F%3E&title=%3Cdata%3Apost.title%2F%3E&logo=&logobg=&logocolor=&ate=AT-webworm/-/-/4ebbbb57b12f0a3a/1&frommenu=1&uid=4ebbbb579f9eaa07&pre=http%3A%2F%2Fwebwormcpt.blogspot.com%2F2008%2F09%2Ffaq-related-to-control-valves.html&tt=0http://www.google.com/url?ct=abg&q=https://www.google.com/adsense/support/bin/request.py%3Fcontact%3Dabg_afc%26url%3Dhttp://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html%26hl%3Den%26client%3Dca-pub-9565190731394229%26adU%3Dwww.sansecovalve.com%26adT%3DSanseco%2BValve%26adU%3Dob.no%26adT%3DBlogger%2BCaroline%2BMaria%26adU%3Dwww.taito-valve.com%26adT%3DValve%2BManufacturer%26gl%3DNO&usg=AFQjCNFxYYH4HJ8-nq1VY49pIcNAGNdqfAhttp://googleads.g.doubleclick.net/aclk?sa=l&ai=BRyhMWLu7TqicGoiy4QSwwZHyAe-IlvgB55by9R7AjbcBwNB3EAMYAyD25awIKAM4AFCw2LuS_f____8BYMPcpIWYGKABoaXn5QOyARd3ZWJ3b3JtY3B0LmJsb2dzcG90LmNvbboBCjMzNngyODBfYXPIAQHaAVNodHRwOi8vd2Vid29ybWNwdC5ibG9nc3BvdC5jb20vMjAwNy8xMC8xMi1mZWF0dXJlcy1yZXF1aXJlZC1mb3Itc2h1dGRvd24tdmFsdmUuaHRtbOABA4ACAakCmm1zUBEjhT7IAs-dihioAwHIAxfoA8cG6AOTBegDDPUDCgAAxA&num=3&sig=AOD64_2qzX1P5audefB4l03bgORxgl7BFQ&client=ca-pub-9565190731394229&adurl=http://www.taito-valve.com/products.asphttp://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1222140180000#c3522838646705536234http://www.meaincorporated.com/http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1208978760000#c1294683861296233318http://www.eng-tips.com/viewthread.cfm?qid=215345&page=1http://www.blogger.com/profile/11991072858350648438http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1208908020000#c1089740639374410454http://www.blogger.com/profile/16245701665250139418http://webwormcpt.blogspot.com/2007/10/12-features-required-for-shutdown-valve.html?showComment=1208907960000#c7615750191280096548http://www.blogger.com/profile/16245701665250139418http://no.indeed.com/pagead/clk?mo=r&ad=-6NYlbfkN0Aufku41FG2QFivGt0YeQkOHR7VtJ9-sSLOm182BxCqn6psquB0hZgP39xUWFkT-y4Ii1q72KqPiMzeCVrg8DSAPGmaMWmUkBgE47z28mL224EspsIq2bS9UvM-KCcwqwciPykLwGu5ir8v07fULSYNQQMg5jhmDDlajYw94To5MVL7brc2AcNlDmU5Ir-fCl-D6kreZQgl0h0BBlz3Uj1o_2D3Q9t7SFot0PB8sGGQ6FKOywt2v_sQB_FXWPlOUi1vrHQfzoazq31LQa_Ok7CYxalcJRhSDbSTdWVr3uNHyhftSjkDj3jfzSTkkfF4OVI5MGWrFNWfwR-mREfHAur-c2E6aHPaCGfimjW5UgEJK8omUuSFDlMGbCpKD_GPEIkUXwV9tVq87U_4n-BbVELA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4/5



Anonymous said...

best regards to all,

iam working now here in qatargas VOC project. and now i need to find a

emergency shutdown valve our client suggested from metso automation

product, but iam now having a hard time to see a siutable valve to order. so

any body can help me?

October 28, 2008 10:06 PM

Webwormsaid...

Hope these helps

http://www.meaincorporated.com/

http://www.metsoautomation.com/

October 30, 2008 4:09 PM

Ball Valves with Pneumatic and Electrical Actuatorssaid...

SUDE team is well aware of the latest developments in modernization and

automation with stress on economy, efficiency and quality. The products are

Pneumatic Actuators, Valves with Pneumatic and Electrical Actuators etc.

March 21, 2011 4:41 AM

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Chemical & Process Technology_ 12 Features Required for Shutdown Valve (SDV)

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