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Need
Status: Need is Closed

In-Situ Valve Measurement of Stellite Cladding

Request Number

NG_2017_0014_N_004
Point of Contact
Description

We are looking for a solution which would give a high accuracy thickness measurement of the Stellite cladding across the full valve seat face and would also ensure concentricity of the seat while in-situ.

 

This could involve using either imaging or condition-based monitoring techniques, though you might think of alternative approaches. Whatever you suggest should allow Weir/Weir Engineering Services to proactively repair only the valves that are in need of repair.  In-situ wear monitoring technology or methods can help us significantly reduce the length of outage periods which could potentially save our customers millions of pounds.  This would also enable us to work more efficiently as we can then focus our resources on other non-critical valves that often get overlooked and have more time to service other customers.   

 

Background

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Weir Engineering Services (WES) is a subsidiary of the Weir Group and a leading UK industrial valve overhaul centre. WES provides installation and maintenance services of industrial pumps, valves, turbines, compressors, and electric submersible motors. 

 

WES is looking to introduce innovative repair techniques which will in turn help reduce operation costs for its customers. Most operators demand that all critical valves are inspected and repaired every 3 years, regardless of their condition.  In order for us to carry out proper inspections of valves, it is required that WES visit the customer’s site and disassemble each critical valve, a process that is both time consuming and costly for the customer as it interrupts their operations. Stripping the valve for inspection and rebuilding can take 12 hours with an average of 400 valves to be inspected during an outage.  Additionally, two workers are required, which equates to 24 worker hours per valve before inspections and repairs are included. 

 

Current techniques for measuring and assessing various aspects of valve wear are costly, time consuming, and lack the desired accuracy.  Innovative improvements to existing techniques could improve the quality of our overhaul process, as well as the performance and reliability of the valves. 

 

Many valves have a hard Stellite clad valve seat to increase wear resistance.   To ensure optimum performance of the valve, the thickness of the Stellite cladding is measured manually across the cladded area while in-situ.  Given the lack of space inside the valve body, the task requires a lot of time to be taken assessing each valve to ensure the thicknesses are measured correctly and accurately. For additional insight into this valve, see the image below:

 

 

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Key success Criteria
  • Should use commercially available in-situ wear monitoring/condition-based monitoring technology
  • Must be cost-effective and demonstrate proven time-saving results for customers
  • Must be integrated easily with our in-situ valve inspection processes

 

Due Date
Apr 15, 2017
Items to be submitted

We are looking for a concise abstract/executive summary. 

 

The proposal should briefly describe the technical approach and provide information on technology performance, background and description of the responding team and their related experience.

 

To respond, please use the Respond button located at the end of this page.

 

Please note that only non-confidential information can be accepted.  By submitting a response you represent that the response does not contain and will not be deemed to contain any confidential information of any kind whatsoever.  By submitting a response, you acknowledge that the Need’s sponsoring organization, in its sole discretion, may select or reject a response or any portion thereof.

 

Your summary/abstract should contain all required information in order to provide us with appropriate contact information for your responses.  

 

Client Point of Contact

Super User
Gallery Moderator(s)
Oliver Worsfold
Request Number
NG_2017_0014_N_004
Preferred Collaboration Types
Area of Interest