forged-steel handhole plates, which are held in position by forged-steel guards and 

 nuts. The joints between handhole plates and inlet and outlet fittings are made 

 with thin gaskets. 



Drain pipes and valves are provided for 

 draining any water that may collect in the 

 superheater headers when no steam is pas- 

 sing through. 



SUPPORTS -- The superheater headers 

 are carried at both ends on saddles attached 

 to members which are framed into the boiler 

 supporting structure. The overturning moment 

 of the superheater is taken care of by straps 

 attached to the saddles passing over the boxes 

 at the ends. These hold the superheater in position and are so arranged as 

 to allow for longitudinal expansion of the boxes. 



LOCATION As stated, the superheater is located in the triangular space 

 beneath the center drum between the front and middle banks of tubes, thus 

 allowing all of the gases to sweep evenly over the superheating surface after 

 they have passed over the front bank of boiler tubes. 



ACCESSIBILITY Large doors in the side walls give access to the space 

 under the superheater headers, from which inspection and repairs can be readily 

 accomplished. Other doors give access to the space in front of and between the 

 tubes and allow all parts of the superheater to be thoroughly cleaned. 



FORGED-STEEL SQUARE HAND- 

 HOLE FITTINGS SUPPLIEDWITH 

 INLET AND OUTLET SUPER- 

 HEATER CONNECTION ELBOWS 



61 



