In-Situ Safety Valve Testing

Convenient On-Site Valve Testing

Saving You Time & Money

Dismounting safety valves from their operational location can be time-consuming and expensive.

The Seetru Tru-Test® provides the capability to test safety and relief valves in-situ, eliminating the need to remove the valve from the system or shut the system down.

Test & Maintenance Regime

In-situ testing is part of a carefully planned and monitored test and maintenance regime

This also includes periodic strip down, inspection & overhaul, and a highly cost effective means of managing safety valve and relief valve inventories.

Optimisation of Your Plant

The Seetru Tru-Test® system offers the opportunity to test valves in real / normal operating conditions

thereby providing added confidence in the protection offered by your safety valves. It also supports the optimisation of your plant by minimising or removing the required downtime.

Features of the Tru-Test® System:

Features of the Tru-Test® System:

  • Objective, accurate and reproducible evaluation of set pressure.
  • Tests can be “hot”, i.e. in-situ with medium pressure acting on the safety valve,
    or “cold”, i.e. on or off site and in-situ with no medium pressure acting on the safety valve.
  • Highly accurate transducers (0.1% accuracy) are used to measure force and lift.
  • Fully automatic test and control of test, the test takes place without human operator intervention.
  • Pre-programmed computer controlled test cycle.
  • Pre-programmed safety limits are sensed and managed automatically during the test cycle in order
    to prevent damage and to provide fail-safe operation.
  • An integrated pressure transducer can be used to provide the most accurate measurement of actual
    system pressure at the time of the test and as the test evolves.
  • Seetru Tru-Test® equipment is ATEX approved for operation in potentially explosive atmospheres.
  • Lift limitation is pre-established and provided to minimise the risk of valve damage or a full lift
    safety valve popping open during test. The computer controlled pre-programmed test eliminates
    the chance that the inherent vagaries of a human operator manually controlling the lift might
    result in the safety valve lifting.
  • Ability to provide power driven closure of safety valve, should the valve pop open during test.
  • Equipment and procedures designed to enhance operational Health and Safety.
  • The Seetru safety valve test method using the Tru-Test® system is widely approved, for instance,
    by Lloyds Register of Shipping and the Insurance Industry.
  • Both set pressure and full lift tests available.
  • Fully reproducible and objective footprint/benchmark tests for valve health monitoring.

What is the Tru-Test® Measuring?

The Tru-Test® system measures the force necessary to lift the disk away from the seat. Given this force and the effective seal area of the valve it is possible to calculate the equivalent pressure at which the disk lifts away from the seat. This compares with the set pressure as measured by a bench test.  Where required full lift tests can also be carried out.

The Seetru trutest equipment

 

Hot Testing In-Situ

The hot in-situ testing process involves lifting the disk of the valve very slightly away from the seat while the valve is in operation. This form of testing offers many operational, security and cost advantages. The Seetru Tru-Test® system has sophisticated and highly accurate features designed into it to control the testing process.

Resetting Set Pressure In-Situ

The Tru-Test® can be used in setting the set pressure of safety valves. If the set pressure of the safety valve is found to be incorrect a plan of action will be developed with the owner of the valve.

Cold Testing

Testing can also be carried out without line pressure. This can be carried out in-situ or in our service center or workshop. Set pressure can be adjusted and minor repairs carried out.
A ‘Footprint’ test of the valve can be carried out before installation and future tests can be verified with the Footprint tests to monitor the condition of the valve.

 

Book your In-Situ Testing with SES

Computest - Accuracy & Consistency

Highly accurate digital recording of a valve’s leak, set and re-seat points

Seetru's Compu-Test™ system

Seetru’s Compu-Test™ system provides a highly accurate digital recording of a valve’s leak, set and re-seat points. Using pressure transducers to measure these different points and displaying them on a computer screen, the Compu-Test™ removes the risk of human error which can occur with manual readouts. The Compu-Test™ system also makes calculations to see whether the test results meet industry safety standards and regulations.

Read more about the Computest

Contact Us

Our valve technicians here at Seetru Engineering Services have extensive knowledge and experience, providing expert testing and maintenance services for safety valves, and a wide range of other pressure safety equipment. Contact SES today!