Gas Turbine Filter House Maintenance

I. Filter replacement

To prepare all tools suitable for thejob.
To remove the Coalescerfilter, Pre-filter and Final filled[DC GT11/12 (allfilter house lTl Ddule)
To clean all the filter frames, the lowers and all surface offilter house (inside and outside) by pressured water or another suitable tool which not damage to the filter house
To check for condition of access doors and replace all seals
To repair any defective filter support grids after cleaning.
To maintenance or repair for all defective locks latches and .strikes.
To vacuum clean of the clean room (afterfincil filter) and sound dampers
To remove all damaged paint layer and repaint the corrosion and damciged parts of support framework [or filter and repaint onfioor in clean room
To replacements of Coalcscer filter, Pre-filter and Final filter (There cire 540pcs of Coalcsccr fillers, 534pcs of Pre-Fillers, 534pcs Final Fllters.)
Re-painting specification as below:
(Grey color)
- Painting for rusry points
  - Epoxy Primer 50 Microns
  - Two Pack High Build Epoxy 1 x 100 microns
  - Internciii onal paints or equivalent
- Paint works onfioor in walkw‹:iys and fioor in clean room( after final filter)
  - Two Pack High Build Epoxy 1 x 100 microns
  - International paints or equivalent

II. Filter House structure and Air Inlet duct :

To inspect the filter house structure and identify the corrosion and damaged parts offilter house air inlet duct then repair any defective and repaint the corrosion and damaged
To repaint whole outside of the filter house.
- To check for drainage syslcm ensures that drainage syslem is propcrl y installeJ at the drain holes of the filter house fioor
- To check for platform, handrails, and access ladders Ensure thcit the platforms arc secure and level and remove any obstruction which could create a ha=ard to personnel
- To remove all damagecl paint layer anJ repaint
- To check on the top offilter house and repair dc[eel and repair the wetter gutter of the filter house
Painting specification as below:
- Total filter house (Grey color)
- Painting for rusty points
  - – Epoxy Primer 50 Microns
  - – Two Pack High Build Epoxy 1 x 100 microns
  - – International paints or equivalent
- Paint works on outside wall of the filter house
  - – Two Pack High Build Epoxy 1 x 100 microns
  - – International paints or equivalent

III. Air Inlet Duct casing

Air inlet diffuser casings (Red color)
- To check paint layer of air inlet diffuser casings then remove all damaged paint layer by scraping
- Cleaned surface by grinder with copper brushed at defected area
- Applied PT remover and Heating surfaces by lamp
- Painting: Primer — Interseal 670SH or equivalent ; Finish — Intergrard 740
Air inlet duct ccisings (Grey color)

To check for air inlet duct casing and remove all damaged paint layer and repaint

Painting for rusty points:
- ■ Epoxy Primer 50 Microns
- ■ Two Pack High Build Epoxy 1 x 100 microns
- ■ International Paints or equivalent
Paint all inside casing
- ■ Two Pack High Build Epoxy 1 x 100 microns
- ■ International paints or equivalent

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