SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
4. CWP Rating: 150 psig.
5. Maximum Operating Temperature: 250 deg F.
PART 3 - EXECUTION
3.1 PIPING APPLICATIONS
A. Hydronic piping, aboveground, NPS 1-1/2 and smaller, shall be any of the following:
1. Type L, drawn-temper copper tubing, wrought-copper fittings, and brazed or pressureseal
joints.
2. Schedule 40 steel pipe; Class 150, malleable-iron fittings; and threaded joints.
B. Hydronic piping, aboveground, NPS 2 and larger, shall be the following:
1. Schedule 40 steel pipe, wrought-steel fittings and wrought-cast or forged-steel flanges
and flange fittings, and welded and flanged joints.
C. Hydronic piping installed below grade shall be the following:
1. Below grade hydronic piping shall be pre-insulated, prefabricated-pipe type, composed of
integral sealed units of polyester resin/fiberglass reinforced outer jacket, polyurethane
foam insulation and black steel carrier pipe.
2. End Seals and Sealing Rings: High temperature heat resistant. Furnish watertight seals
by the jacket and carrier pipe manufacturer suitable for services and pressure of the
system. Surfaces shall be smooth and free of voids.
3. Fittings: Fittings shall be factory fabricated and pre-insulated with polyurethane foam
insulation. Insulation shall be protected with an FRP jacket of same thickness and quality
as that of straight units of pre-insulated pipe. Miters on FRP jacket at fittings shall be as
strong as pipe outer jacket.
4. Expansion Elbows and Loops: Prefabricated elbows, expansion loops and tees shall be
furnished where indicated on Drawings. Pre-insulated fittings that must provide
compensation for pipe expansion or contraction shall be installed in a suitably sized
jacket and insulated with flexible polyurethane foam insulation. Straight units adjoining
expansion fittings shall also be insulated with flexible polyurethane foam insulation to
compensate for lateral pipe movement. Expansion loops and elbows shall be properly
designed in accordance with stress limits indicated by ANSI B31.1 Code for Pressure
Piping.
5. Anchors: Prefabricated plate anchors shall be furnished where indicated on Drawings
and shall consist of a steel plate welded to carrier pipe and sealed to outer jacket. Steel
plate shall be 3/8" thick for 10" and smaller conduits.
6. field Joints: Field joints between prefabricated units shall be installed in the following
manner:
Contract 44577 KW Annex – Rev. E 44577-CSI-SPEC-001 232113 - 8