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Steps to pressure test of industrial valves (by aliakbar nouri)

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Steps to Pressure Test Of Industrial Valves نجام مراحل است فشار ت صنعتیت شیرآ1. Refer to Standard Which valve has been manufactured based on it. شده، رجوع میشودای آن ساخته که شیر بر مبنندارد طراحیستا به ا. 2. Refer to Test section of related standard. ندارد مربوطه مراجعه می شودستاست ا ت به قسمت. 3. Valve will be tested based on requirements as specified in related standard . ست می شودندارد تستای ضوابط مندرج در ا شیر بر مبنا. 4. Test result will be checked based on acceptance criteria as specified in standard ده می شودندارد سنجیستا مشخص شده در ا ضوابط پذیرشست با نتایج تaliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https ://ir.linkedin.com/in/aliakbarnouri; [email protected]
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Page 1: Steps to pressure test of industrial valves (by aliakbar nouri)

Steps to Pressure Test Of Industrial Valvesشیرآالت صنعتیتست فشار مراحل انجام

1. Refer to Standard Which valve has been manufactured based on it.

.به استاندارد طراحی که شیر بر مبنای آن ساخته شده، رجوع میشود

2. Refer to Test section of related standard.

.به قسمت تست استاندارد مربوطه مراجعه می شود

3. Valve will be tested based on requirements as specified in related standard.

.شیر بر مبنای ضوابط مندرج در استاندارد تست می شود

4. Test result will be checked based on acceptance criteria as specified in standard

نتایج تست با ضوابط پذیرش مشخص شده در استاندارد سنجیده می شود

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 2: Steps to pressure test of industrial valves (by aliakbar nouri)

Example for following steps of valve pressure testing• We want to test a ball valve with following description:

Design standard= API 6D

Size: 8”

Shell Material: ASTM A350 LF2

Ball valve Function: Double Block & Bleed

Soft Seated ball valve

:می خواهیم شیر توپی را با مشخصات زیر تست کنیم

استناندارد طراحی که شیر بر مبنای آن ساخته شده است :API 6D

اینچ8: سایز

متلایر :ASTM A350 LF2

در هر طرف از شیر : عملکرد شیر توپیSeat ، وجود دارد که آن را در برابر فشار از هر دو سمت.آب بند می کند

شیر توپی با نشیمنگاه نرم

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 3: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 1

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 4: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 2

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 5: Steps to pressure test of industrial valves (by aliakbar nouri)

• Based on API 6D each ball valve shall be pressure tested as specified below:

A. Hydrostatic Shell Test : Based On Para. 9.3 of API 6D

B. Hydrostatic Seat Test : Based On Para. 9.4 of API 6D

C. Low-pressure Gas Seat Testing (Optional): Based On Para. H.3 of API 6D

:بر روی هر شیر باید تست فشارهای زیر صورت پذیردAPI 6Dبر مبنای استاندارد

.Aتست هیدرواستاتیک پوسته

.B تست هیدرواستاتیکSeat(نشیمنگاه)

.C تست گاز فشار پایینSeat

Step 3

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 6: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 3- Part AHydrostatic Shell Test : Based On Para. 9.3 of API 6D

a. Valve ends shall be closed off and the obturator placed in the partially open position during the test

انتهای شیر باید بسته بوده و شیر در حالت نیمه باز قرار بگیرد

b. Refer to standard ASME B16.34 for determining working pressure @ 100 °F (38 °C) Based on valve Material & rating

درجه سانتیگراد تعیین 38مراجعه کرده و فشار کاری را با توجه به کالس شیر و متلایر در دمای 16.34برای تعیین فشار کاری به استاندارد میکنیم

c. Shell test pressure = 1.5 X working pressure @ 38 °C

درجه سانتیگراد خواهد بود38برابر فشار کاری در دمای 1.5فشار تست پوسته

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 7: Steps to pressure test of industrial valves (by aliakbar nouri)

Steps to Find working Pressure in ASME 16.34

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 8: Steps to pressure test of industrial valves (by aliakbar nouri)

Steps to Find working Pressure in ASME 16.34

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 9: Steps to pressure test of industrial valves (by aliakbar nouri)

Steps to Find working Pressure in ASME 16.34

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 10: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 3-AHydrostatic Shell Test : Based On Para. 9.3 of API 6D

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 11: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 3-AHydrostatic Shell Test : Based On Para. 9.3 of API 6D

Valve is Partially open

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 12: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 3-AHydrostatic Shell Test : Based On Para. 9.3 of API 6D

Valve is under Shell test pressure

Pressure Gage

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 13: Steps to pressure test of industrial valves (by aliakbar nouri)

Hydrostatic Shell Test Durationمدت زمان باقی ماندن شیر زیر فشار تست هیدرواستاتیک

For size 8”, Shell test pressure is equal to 5 min

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 14: Steps to pressure test of industrial valves (by aliakbar nouri)

• No visible leakage is permitted during the hydrostatic shell test.

.هیچگونه نشتی آشکاری هنگام تست هیدرواستاتیک پوسته مجاز نیست•

Acceptance Criteria for Hydrostatic Shell Test پوستهضوابط پذیرش تست هیدرواستاتیک

Shell Test is accepted; because of No visible leakage

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 15: Steps to pressure test of industrial valves (by aliakbar nouri)

Step 3-BHydrostatic Seat Test : Based On Para. 9.4 of API 6D

1. Valve Function = Double Block & Bleed

2. With the valve unseated and partially open, the valve and its cavity shall be completely filled with test fluid. The valve shall then be closed and the valve body vent valve opened to allow excess test fluid to overflow from the valve-cavity test connection. The test pressure shall be applied simultaneously from both valve ends. Seat tightness shall be monitored via overflow through the valve cavity connection.

سیال تست اضافی اجازه به باز مشود تا ventپر از آب می گردد و Cavityشیر و , در حالتی که شیر نیمه باز است. 2. سپس فشار تست باید همزمان در دو طرف شیر اعمال گردد. دهد سرزیر کند

. مانیتور گرددdrainآب بندی نشیمنگاه باید به وسیله ی سرریز از

3. Hydrostatic Seat Test = 1.1 X working pressure @ 38 °C

درجه سانتیگراد خواهد بود38برابر فشار کاری در دمای 1.1فشار تست پوسته

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 16: Steps to pressure test of industrial valves (by aliakbar nouri)

the valve body vent valve opened to allow excess test fluid to overflow from the valve-cavity test connection

Step 3-BHydrostatic Seat Test : Based On Para. 9.4 of API 6D

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 17: Steps to pressure test of industrial valves (by aliakbar nouri)

Hydrostatic Seat Test Pressure

• Hydrostatic Seat Test Pressure = 1.1 X working pressure @ 38 °C

• The working pressure for Seat Test is equal to shell test .

• Hydrostatic Seat Test Pressure = 1.1 x 255.3bar= 280.83bar

Seat Test Pressure = 1.1 x 255.3bar= 280.83bar

Page 18: Steps to pressure test of industrial valves (by aliakbar nouri)

Valve is Closed

Hydrostatic Seat Test Pressure

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 19: Steps to pressure test of industrial valves (by aliakbar nouri)

Hydrostatic Seat Test Pressure

Valve is under Seat test pressure

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 20: Steps to pressure test of industrial valves (by aliakbar nouri)

Hydrostatic seat Test Durationمدت زمان باقی ماندن شیر زیر فشار تست هیدرواستاتیک نشیمنگاه

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 21: Steps to pressure test of industrial valves (by aliakbar nouri)

• Leakage for soft-seated valves shall not exceed ISO 5208, Rate A (no visible detectable leakage for the duration of the test at test pressure).

ت؛ مورد برای شیرهای با نشیمنگاه نرم هیچ گونه نشتی در بازه زمانی تست، تحت فشار تس•.قبول نیست

Acceptance Criteria for Hydrostatic seat Test نشیمنگاهضوابط پذیرش تست هیدرواستاتیک

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 22: Steps to pressure test of industrial valves (by aliakbar nouri)

Acceptance Criteria for Hydrostatic seat Testنشیمنگاهضوابط پذیرش تست هیدرواستاتیک

Seat Test is Rejected; because of test fluid overflow

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 23: Steps to pressure test of industrial valves (by aliakbar nouri)

Acceptance Criteria for Hydrostatic seat Testنشیمنگاهضوابط پذیرش تست هیدرواستاتیک

Seat Test is accepted; because of No fluid overflow

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 24: Steps to pressure test of industrial valves (by aliakbar nouri)

• The seat test (As describe in previous Step) shall be repeated at a test pressure between 5.5 bar and 6.9 bar.

• using air or nitrogen as the test medium.

ه این بار تست فشار آنگونه که در مرحله ی قبل بیان گردید تکرار می گردد؛ با این تفاوت ک•.است و سیال تست نیتروژن با هوا است6.9تا 5.5فشار تست بین

Step 3-CLow-pressure Gas Seat Testing (Optional): Based On Para. H.3 of API 6D

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 25: Steps to pressure test of industrial valves (by aliakbar nouri)

• Due to soft Seated valve, The acceptable leakage rate for low-pressure gas seat testing shall be: ISO 5208, Rate A (no visible leakage)

ود داشته به علت انکه شیر داری نشیمنگاه نرم است؛ هیچ گونه نشتی آشکاری نباید وج•.باشد

Acceptance Criteria for Low-pressure Gas Seat Testingتست گاز کم فشارنشیمنگاهضوابط پذیرش

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 26: Steps to pressure test of industrial valves (by aliakbar nouri)

Acceptance Criteria for Low-pressure Gas Seat Testingتست گاز کم فشارنشیمنگاهضوابط پذیرش

Seat Test is Rejected; because of Gas leakage

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 27: Steps to pressure test of industrial valves (by aliakbar nouri)

Acceptance Criteria for Low-pressure Gas Seat Testingتست گاز کم فشارنشیمنگاهضوابط پذیرش

Seat Test is Accepted; because of No leakage

aliakbar Nouri : Piping & Pipeline Expert and Trainer ; Mobile Phone: +989123354714; https://ir.linkedin.com/in/aliakbarnouri; [email protected]

Page 28: Steps to pressure test of industrial valves (by aliakbar nouri)

Thank you for following Steps to Pressure Test Of Industrial Valves

Aliakbar Nouri : Piping & Pipeline Expert and Trainer Mobile Phone: +989123354714

https://ir.linkedin.com/in/[email protected]


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