Popular search terms
  1. Success stories
  2. EDF continue to trust AIS to repair and replace turbine fleet insulation jackets

EDF continue to trust AIS to repair and replace turbine fleet insulation jackets

Building trust is at the forefront of what we do. Therefore, we are delighted to report that EDF has used ContraFlex® jackets to repair and replace jackets on valves, governors and stops in various stations for over eight years.

Since every turbine is unique, our team continues to make bespoke applications to fit the customer's turbines. Furthermore, the removal and maintenance of our jackets is up to three times quicker than traditional methods – resulting in millions of cost savings for EDF.

image

The highlights

Easy to replace

Our ContraFlex® jackets are easy to repair and refit in sections, making the inspection and maintenance of our continual work safer.

Increased safety on site

The design of our jackets ensures no hot spots, gaps or heat leakage, as well as reduced noise and vibration.

Reduced outage

Removal and maintenance of our jackets is up to three times quicker than traditional methods. This has provided millions of cost savings for EDF.

image

Solution

Turbines use “superheated steam” (steam that’s hotter than its vaporisation or boiling point at the absolute pressure where the temperature is measured) which may cause health and safety risks if not insulated.

At AIS, we design, manufacture, and install ContraFlex® high-temperature insulation jackets so they are capable of operating at 900 °C. Therefore, they can withstand the 700 °C limit of gas turbines (GT) with ease. This is through the use of specially selected infill materials and fabrics, and staggered joints between the layers of insulation, ensuring minimal heat loss and maximum efficiency, As a result, EDF continues to trust our insulation solution.

Our track record

Typical applications include insulating intermediate pressure (IP) and high pressure (HP) turbine half joints, main boiler feed pumps (MBFP) in addition to ancillary equipment such as; stops, governors (Gov), valves and strainers including; vacuum tubes (VT) and idle control valves (ICV).

The table below illustrates our continual work with EDF power plants across the UK:

Date

EDF Station

Description

July 2016

Hartlepool

Various jackets around the reactor, and maintenance on the centre line jacket

October 2016

Heysham 2

Maintenance on centre line jackets

February 2017

Heysham 1

HP and IP Stop and Gov valves

July 2017

Dungeness B

Maintenance on centre line jackets

July 2017

West Burton CCGT

Maintenance on centre line jackets

January 2018

Hartlepool

MBFP live steam valve and suc-tion stage, plus various jackets around the reactor

May 2018

Heysham 2

Maintenance on centre line jackets

September 2018

Dungeness B

Maintenance on centre line jackets

September 2018

Torness

Replace IP top and ½ joints

March 2019

Hinkley Point B

Replace IP top

June 2019

Torness

Supply spare set of HP jackets for site

March 2020

Hartlepool

Duplicate jackets on GT and ST (copy original OEM jackets)

March 2020

Heysham 2- unit 8

Repair / replace jackets on IP cylinder and Gov valves

April 2020

West Burton CCGT unit 2

Duplicate OEM GT and steam turbine (ST) jacket

September 2020

West Burton CCGT unit 1

Duplicate OEM GT and ST jackets

December 2020

Heysham 1 unit 1

Repair / replace jackets on IP stops and Gov valves

June 2021

West Burton CCGT unit 3

Duplicate OEM GT and ST jacket

June 2021

Heysham 2-unit 7

Repair / replace jackets on HP stops and Gov valves

December 2021

Hartlepool unit 1

Repair / replace jackets on HP and IP stops and Gov valves

image

Results

Our ContraFlex® jackets reduced the removal, maintenance and reinstatement schedule from seven days using traditional insulation to three. This reduction in outage time for Hartlepool and Heysham 1 provided over £5 million in cost savings.

From steam leak sectioned areas to full turbine overhaul, our Thermal Insulation Engineers (TIE) are available to assist on any major turnaround/fabric maintenance campaign.

Success stories

You may also like

image

AIS jackets protect state-of-the-art HVAC system

Learn more
image

AIS delivers a combined PFP and jacket solution

Learn more
image

ContraFlex® jacket insulation improves efficiency in Modular Power Plant

Learn more
See all success stories

Share your protection challenge

Do you need to protect equipment in an extreme operating environment? Let us discuss how we can help.

Get in touch