Sud Associates, P.A.
Consulting Engineers

  • Master Plan and Replacement/Repair of Steam Lines.  Project Cost:  $2,300,000.  Replacement and repair of
    underground steam lines, new manholes, and installation of steam pressure powered pumps.  Includes study to verify
    steam distribution system sizes and recommend a phased replacement of the campus steam loop.  Future phases will
    depend on recommendations of this phase. Performance of an aerial infrared survey to identify thermal anomalies in the
    steam distribution system.
  • Study to Recommend Modifications to Selected Steam Manholes to Allow Operation of Cut-Off Valves without
    Entering the Manholes.  
  • Planning and Programming Study:  South Laurel Street Steam/Condensate Line Issues and Facilitation of Future
    Line to the North Campus.  The study addressed the resolving of safety issues for MH #3, resolving leaks at Bluford
    Library and improving future reliability of the steam supply for the North Campus.
  • Steam Line Replacement/Repair – Multiple Phases.  Replacement and repair of underground steam lines, new
    manholes, and installation of steam pressure powered pumps.  Includes study to recommend expansion and a phased
    replacement of the campus steam loop.
North Carolina A&T State University
Steam Lines
  • Use of Innovative Technologies Aerial Infrared survey
    of campus helped locate distribution system’s problems.
  • Replaced HPS and CR lines between MH  #12.1, 12.2
    and 12.4, 12.5 AND 12.7.  Replaced the existing
    condensate pump with a new steam pressure powered
    pump package.  Routed high-pressure steam line from
    the South Mechanical Room (MR#1) to the North
    Mechanical Room  (MR#2) and tied-in to the new
    pressure powered pump.  
  • Reworked Manholes 12.4, 12.6 and 13.0 including all
    piping, fittings, valves, anchors, supports, insulation, and
    associated concrete work.  Extend HP steam and
    condensate return lines from IRC boiler room to steam
    manhole at Williams Cafeteria.  Replace existing electrically driven condensate return pumps with new steam
    pressure power pumps..  Provide a new underground pre-fabricated, pre-insulated steel conduit HPS and CR
    system complete with anchors, guides, loop, etc. Provide new manholes #10.1, 10.2 and 11.1, steam trap assembly
    and accessories in MH #9, 10.1, 10.2 and 11.1, main line valves in MH#9, 10.2 and 11.1, pressure powered sump
    pump in MH#11.1.  Reconnect new HPS & CR to existing piping in MH #9 and 12.
Example of thinking outside the box:
  • Steam Line Across Arthur Headen to Service Morrow and Benbow
    This demonstrates our ability to “think outside of the box”.  The steam line
    access across Arthur Headen Drive had deteriorated and needed to be
    replaced.  We advised abandoning the steam line and now serve Morrow and
    Benbow from the VanStory manhole.
       Advantages:
  • Much lower cost.
  • No disruption - street did not have to be trenched.
  • Technically superior.
  • Shorter lines.
  • Condensate was being pumped uphill.  Now it flows downhill.
  • Replaced HPS and CR lines between MH #8 and 9.  Provided a new
    underground pre-fabricated, pre-insulated steel conduit HPS and CR piping in
    the location of the removed abandoned piping.  Provided piping, valves for
    main lines and accessories within MH #8.

    Manhole #9 was always a low point in the steam system.  It was always flooded
    and condensate collected on each side.  As part of the steam line project, we rebuilt and reworked entire MH #9 into
    a utility room to pump condensate from the North Campus to the Main Campus.
  • Manhole #16 Replacement.   MH #16 had steam powered condensate pumps that were impossible to service due
    to their location.  The University requested that we redo the manhole so that the pumps could be serviced.  Sud
    Associates recommended that the pumps be removed.  With the new Utility Pump Room, these pumps are no longer
    required.
  • Replacement of Steam Manhole #3.  Demolish indicated steam manhole # 3 and related piping to replace it with
    new steam manhole, piping and valving.  Provide new high pressure steam and condensate return piping in the
    steam manhole and reconnect to existing piping in the adjacent tunnels.   Provide all steam and condensate valves
    and specialties and steam driven pressure sump pump.
  • New Steam Lines Between Manholes #3, AND 5.01.  Demolish indicated abandoned steam lines between
    manhole MH # 3.3, 5.01 and steam lines between MH # 3 and Gibbs Hall and related piping to replace it with New
    Steam Lines between Manhole MH# 3 and MH # 5.01, New MH # 3.2 piping and valving.  Refurbish abandoned
    manhole MH # 3.3 to be reused for new steam trap assembly.  Rework piping, valving and steps in MH # 5.01.  
    Provide steam trap assembly and accessories in MH #3.2, 3.3 and MH # 5.01.  Provide main line valves in MH #
    5.01.  Provide pressure powered sump pump in MH # 3.2 and MH # 5.01.  Work shall be accomplished during the
    summer during a shutdown of the central steam plant.