What are the construction procedures and methods for the escalators on the boiler steel structure platform?

3.1.3 Platform installation: Platform installation includes the platform and escalators. 3.1.3.1 Inspection and adjustment of platform components a. Platform inspection a). Levelness of the platform frame: 2 mm/m, with a total length of ≤10 mm ； b). The allowable deviation for platform length is ±2 mm/m, with a total length of ≤10 mm ； c). The allowable deviation for the length of the escalator is ±5mm/m. b. Component correction: Component correction can be carried out mechanically or manually. It can be aligned coldly or thermally; the specifics are the same as those for steel structure alignment. 3.1.3.2 Platform Installation and Requirements a. Platform Installation a). Weld the platform to the steel frame; however, platforms that affect the lifting of the steel cylinder or the installation of other components may not be welded at this stage ； b). Unless indicated on the drawings, no arbitrary cutting of the various plates is permitted. If cut, reinforcement welding should be carried out ； c). Platforms supported on the boiler drum or other header tanks shall be installed after the installation of that respective section is completed ； d). If the spacing between handrail posts is not specified in the design, it can generally be set at 1–1.2 meters, with one post must be installed at every turn. b. Installation requirements for platform escalators – Table of allowable deviations for platform escalator installation, Unit: mm. Item No., Item, Allowable Deviation, Remarks: 1. Elevation of the platform: ±10, based on the top surface of the bracket. 2. Levelness of the platform: 1.5/m, based on elevation. 3. Unevenness at the joints between adjacent platforms: 5. 4. Perpendicularity of the handrail posts to the platform or escalator: 5. 5. Curvature of the handrails: 3/m. 3.1.4 Installation standards for steel structures and platforms – Table of installation standards for steel structures and platforms, Unit: mm. Item No., Item, Allowable Deviation: 1. Positional deviation of each pillar: ±5. 2. Deviation in the distance between pillars; maximum deviation: ±1/1000 ± 10. 3. Elevation deviation of pillars and beams: ±5. 4. Difference in elevation between adjacent pillars: 3. 5. Tilt of each pillar; maximum tilt over the entire height: 1/1000 × 10. 6. Unequal length of adjacent lines within the vertical plane between two pillars; maximum value: 1.0/1000 × 10. 7. Unequal length of diagonals in the horizontal plane above or below each pillar; maximum value: 1.5/1000 × 15. 8. Levelness of beams; maximum levelness error over the entire length: 1/1000 × 5. 9. Levelness of beams supporting the boiler drum; maximum levelness error over the entire length: 1/1000 × 3