Podcast
Questions and Answers
What must be checked for concentricity and dimensional tolerances before installation?
What must be checked for concentricity and dimensional tolerances before installation?
- Feeder system
- Spout rear cover blocks
- Refractory tube (correct)
- Orifice ring
What needs to be set properly after a tube change?
What needs to be set properly after a tube change?
- Tube height indicator (correct)
- Orifice ring
- Refractory needle
- Spout front cover blocks
During and after the refractory tube installation, it is important to ensure the tube is centered over what?
During and after the refractory tube installation, it is important to ensure the tube is centered over what?
- Front cover blocks
- Spout throat and orifice ring (correct)
- Mechanical cams
- Visual height indicator
What needs to be verified for proper usage according to machine speed and job being produced?
What needs to be verified for proper usage according to machine speed and job being produced?
Which work instruction outlines the steps for verifying needle system setup?
Which work instruction outlines the steps for verifying needle system setup?
What must be centered above each orifice ring during installation?
What must be centered above each orifice ring during installation?
Proper binding steel support is required for installing which components?
Proper binding steel support is required for installing which components?
Which document must be followed for the selection of expendable refractories?
Which document must be followed for the selection of expendable refractories?
What components are sized correctly considering the burner count, the size of the tip burners, and the maximum fire pressure range for the combustion zone?
What components are sized correctly considering the burner count, the size of the tip burners, and the maximum fire pressure range for the combustion zone?
What must be permanently tagged on the combustion mixture piping to zones?
What must be permanently tagged on the combustion mixture piping to zones?
Which component must be installed correctly according to the sense of gas flow?
Which component must be installed correctly according to the sense of gas flow?
What is necessary for combustion air fans?
What is necessary for combustion air fans?
What needs to match the mechanical design drawings for proper installation?
What needs to match the mechanical design drawings for proper installation?
Which valves need to be properly installed and functional according to the guidelines?
Which valves need to be properly installed and functional according to the guidelines?
What should be verified when using a standby compressed air supply system as a combustion air backup?
What should be verified when using a standby compressed air supply system as a combustion air backup?
What should be properly installed and functional for monitoring air/gas mix pressure?
What should be properly installed and functional for monitoring air/gas mix pressure?
Study Notes
Feeder Mechanism Setup
- Refractory tube setup ensures repeatability in gob characteristics and job histories
- Refractory tube dimensional verification involves checking for concentricity and dimensional tolerances before installation
Refractory Tube Setup
- Tube height setup involves setting the tube mechanical stop, visual height indicator, and electronic height indicator (if installed) properly after a tube change
- Ensure tube centering over the spout throat and orifice ring, and spinning concentrically during and after installation
Needle System Setup
- Verify proper needles, mechanical cams, or servo profiles for machine speed and job being produced, as specified in job history
- Follow steps in Work Instruction EN-FHF-03-026 for needle system setup
Refractory Needle Installation
- Center needles above each orifice ring during installation
- Follow visual alignment process for refractory needle installation
Refractory Spout Installation
- Spout rear and front cover blocks require proper binding steel support and installation according to Work Instruction EN-FHF-03-049
Expendable Refractory Setup
- Selection of expendable refractories and feeder system accessories follows requirements in MSDR EN-FHF-07-013
Combustion Zone Requirements
- Burners must be installed according to their corresponding combustion zones.
- Combustion air and gas fuel piping must match the mechanical design drawings in terms of size.
Regulator Sizing and Installation
- Zero gas ratio regulators and air/gas mixers must be correctly sized based on the number of burners, tip burner size, and maximum fire pressure range for each combustion zone.
- The main gas regulator and by-pass regulator must be sized correctly considering the maximum gas fuel flow requirements for the skid.
Piping and Identification
- Piping for the combustion mixture to the zones must have a permanent identification tag installed and visible at the combustion skid, showing the name of the zone it is connected to.
Regulator Installation and Functionality
- Zero gas ratio regulators must be installed horizontally, with correct connections according to the sense of gas flow.
- Combustion air by-pass valves, manual gas shut-off valves, combustion air valves, and valve actuators must be correctly installed and functional.
Backup Systems
- Combustion air fans must have a backup system, either a second standby fan or a standby compressed air supply system.
- If using a standby compressed air supply system, its size must be verified based on the required combustion airflow requirements for the skid.
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Description
Setup instructions for feeder mechanism and refractory tube to ensure repeatability in gob characteristics and job histories. Includes refractory tube dimensional verification and tube height setup.
