09292016Thu
Last updateThu, 29 Sep 2016 4pm

i

Caution: Horizontal Stem Installation Ahead

Caution: Horizontal Stem Installation Ahead

When it comes to linear valve installati...

The Critical Stem Nut: Who is Responsible for Maintenance?

The Critical Stem Nut: Who is Responsible for Maintenance?

One of the most important components of ...

An Alternative Basics Education: Valve Ed Comes to You!

An Alternative Basics Education: Valve Ed Comes to You!

For the first time in the seven-year his...

Give Your Flow Meter a Happy Home

Give Your Flow Meter a Happy Home

Increased emphasis on the need to improv...

The Weekly Report

New Products

  • ja-news-2
  • ja-news-3

Industry Headlines

Siemens Industry Partners for Self-Funded Efficiency Project

Thursday, 29 September 2016  |  Chris Guy

Montgomery County, TN has partnered with Siemens Industry Inc. to begin a nearly $5 million, self-funded efficiency project. The project will begin in l...

Readmore

Loading...
Advertisement
i

Industry Headlines

Siemens Industry Partners for Self-Funded Efficiency Project

-1 DAYS AGO

Montgomery County, TN has partnered with Siemens Industry Inc. to begin a nearly $5 million, self-funded efficiency project. The project will begin in late October and will be completed by fall of 2017.

Siemens has guaranteed the savings – including 2,473,263 kWh of electricity per year; 34,154 c...

Readmore

Wolseley Reports 2016 Full Year Results

1 DAY AGO

Wolseley plc delivered an improvement in overall results for the fiscal year ending July 31, 2016, up 8.5% from last year. Revenue of $18.7 billion was 4.2% ahead at constant exchange rates and 2.4% ahead on a like-for-like basis. Price deflation, particularly in the U.S., reduced revenue by 1.5%. Imp...

Readmore

Construction Chemicals Market to Reach $40,154M by 2022

19 HOURS AGO

According to a new report published by Allied Market Research, the construction chemicals market is poised to reach $40,154 million by 2022, from $27,162 million in 2015, growing with a CAGR of 5.6% from 2016 to 2022. The concrete admixtures segment leads the construction chemicals market with more th...

Readmore

Goldman Sachs: U.S. Shale Firms to Pump More Oil by 2017

19 HOURS AGO

“Though the collapse in prices caused a wave of bankruptcies, total U.S. oil production has only fallen by about 535,000 barrels a day so far this year compared with 2015, when it averaged 9.4 million barrels, according to the latest federal data,” The Wall Street Journal reports .

“As...

Readmore

Durable Goods Orders Unchanged in August

16 HOURS AGO

New orders for manufactured durable goods in August were little changed at $226.9 billion, the U.S. Department of Commerce announced, following a 3.6% July increase. Economists were predicting a 1.5% decrease in August. Excluding transportation, new orders decreased 0.4%. Excluding defense, new orders...

Readmore

U.S. Consumer Confidence Surges to Nine-Year High

1 DAY AGO

The Conference Board Consumer Confidence Index, which had increased in August, improved further in September. The Index now stands at 104.1, up from 101.8 in August. The 104.1 figure is the highest since August 2007.

“Consumer confidence increased in September for a second consecutive month and i...

Readmore

Specialized Designs for Pipeline Valve Actuation

Expansion of oil and gas production into remote and inhospitable areas of the world challenges actuator manufacturers to produce rugged, reliable and often specialized products to meet the pipeline industry’s needs.

 

A number of specialized designs of valve actuators have been developed over the years to cope with specific valve control demands that are found in the pipeline industry. Examples include gas-over-oil, high-pressure gas and electro-hydraulic actuators, as well as specialized hydraulic actuators designed for subsea valves.

While the fundamental principles of design for these actuators are well established, rapidly advancing technologies, increasing demands for reliability, reduced maintenance and automation from end-user industries continue to present manufacturers with new challenges. In addition, the expansion of oil and gas production into increasingly remote and previously unreachable areas, combined with the growth of strategic pipeline distribution networks across remote and inhospitable landscapes, places further pressure on the manufacturer to provide rugged and reliable valve actuation solutions.


Testing for Reliability in the Extreme

The importance of testing cannot be over emphasized, not only to prove the long-term performance and reliability of products, but also to gain specific approvals from end-user markets without which it would be difficult or even impossible to bid on projects.

Some major equipment manufacturers’ testing policies are designed to reassure the customer that the quality of its product range is first class through the achievement of internationally recognized quality assurance approvals for design and manufacture.

Running in parallel with these assessments, equipment manufacturers also subject their products to the test procedures required for end-user approvals in specific markets and industrial disciplines. In these areas there have been significant market-led increases in activity in recent years.

In addition to the hyperbaric testing of subsea actuators and performance verification of gas-over-oil actuators mentioned later in this article, testing programs in recent years have expanded to include specific tests such as:

  • IP66M/67M, dust, water jet, immersion and deluge testing of pneumatic actuators
  • Shell qualification for hydraulic and pneumatic actuators
  • Transco qualification for hydraulic actuators
  • HIPPS (high integrity pressure protection systems) qualification for control systems
  • GOST Russian Certificate of Conformity and Federal Use Permit
  • ABS (American Bureau of Shipping)

These are in addition to ATEX explosion-proof certification, PED (European Pressure Equipment Directive) approval and SIL (safety integrity level) assessments that also apply to pipeline actuation products.


Subsea Actuators, Testing In-depth

Subsea valve applications, which often involve vital fail-safe and associated safety-related duties, represent an area of technology demanding the very highest levels of quality and product integrity to ensure reliable long-term performance. It may be prudent to not only test to API (American Petroleum Institute) qualification but also to achieve third-party-witnessed hyperbaric approval to the international qualification procedure ST-028.

In one API test performed by a major equipment manufacturer, a scotch-yoke hydraulic actuator with ROV (remote-operated vehicle) override was operated in a hyperbaric chamber under an external pressure of 3600 psi (240bar-g) to represent the submerged qualification depth of 2,400 meters over a period of six weeks. The actuator was selected as a representative sample of all the company’s subsea actuators for the purpose of the testing, which was witnessed by a third-party inspector. The severity of the testing reflects the crucial nature of subsea actuator duties and the increasing depths at which actuators are expected to perform as exploration moves into new, more remote offshore fields.

In the ST-028 hyperbaric test a similar hydraulic actuator fitted with a limit switchbox was subjected to cyclic testing to prove its suitability for submerged installation at a depth of 45 meters. The witnessed testing included pressurizing the switchbox with air at 75 psi (5bar-g) without any sign of leakage or bubbles, static torque and cycle testing of the actuator at ambient and 75 psi (5bar-g) external pressure (1,090 cycles at 2400 psi [160bar-g] on each test), final static torque monitoring, strip down and inspection. This was a much shorter test, taking only three days to complete, although the combined total operating test, amounting to over 2,000 cycles, is representative of a much longer working life.

  • Latest Post

  • Popular

  • Links

  • Events

Advertisement

Looking for a career in the Valve Industry?

ValveCareers Horiz

To learn more, watch the videos below or visit ValveCareers.com a special initiative of the Valve Manufacturers Association