Piping

Introduction Review online course content. Review questions.

Workshop Objectives-Part 1 Participate in discussions, demonstrations, and hands-on activities that will enable you to: Identify mechanical joints, leak clamps on caulked bell and spigot joints; specific to cast iron pipe. Explain the handling, lowering in, and fitting of steel pipe in a ditch, after excavation. Prepare pipes with threaded fittings and inspect completed joints.

Piping Part 1-Cast Iron

Introduction To Cast Iron Pipe Characteristics and uses Tools used Vocabulary terms and acronyms Bell and spigot joints Gasket Mechanical leak clamps Jute and lead Best safety practices “Good” repairs-“Bad” repairs Image Retrieved July 2013: http://www.nachi.org/forum/f22/stacks-galv-cast-62240/

Evaluate, Repair And Test For Leaks Conducting a leak survey Preparing pipe to seat a gasket Installing a mechanical leak clamp Soap test for leaks Repairing a leak clamp Importance of maintenance records Activity Worksheet #1 Image Retrieved July 2013: http://www.abbeyproducts.com/images/leak-detection-fluid-mat.jpg

Sealing Cast Iron Pipes Encapsulating a joint Correct tools and PPE Steps to encapsulate a joint Prepare Expose the joint Clean Inspect Attach a mold Apply sealant and pressurize Inspect and test Activity Worksheet #2 Image Retrieved July 2013: http://www.its-training.com/oq

Installing Steel Pipes in a Ditch Requirements for installing steel transmission pipelines Pipe materials-calculating design formula Coatings Tape Shrink Sleeve systems Pipe handling and transit guidelines Pipe protection Backfill materials http://www.darcy.co.uk/product/skimmers/pipe-coupling-repair-clamp/

Ways to Join Pipe Correct tools and PPE Joining pipe by welding Joining pipe mechanically Bolted coupling Boltless coupling Hydraulic coupling Flanges Characteristics-uses Insulated couplings Non insulated couplings Image Retrieved July 2013: http://www.altracouplings.com/energy-oil-gas.asp

Underground Installation Review safety practices and guidelines Correct tools and PPE Preparing and inspecting the trench Installing the pipe Handling excavated materials Required documentation Activity Worksheet #3 Image Retrieved July 2013: http://www.darcy.co.uk/product/skimmers/pipe-coupling-repair-clamp/

Key Pipe Terms Dry Seal Wet Seal Leftover Threads Male Fittings Female Fittings Imperfect Threads Gas-tight Seal Liquid-tight seal Image Retrieved July 2013:http://www.directindustry.com/prod/bene-inox/stainless-steel-male-female-elbows-connectors-8514-566409.html

Joining Threaded Pipe Requirement and limitation of using threaded joints National pipe thread standards Correct and incorrect uses of threaded pipe Correct tools and PPE Preparing the pipes Inspection procedures Activity Worksheet #4 Image Retrieved July 2013: http://file.seekpart.com/productsimage/2011/12/16/20111216171536135802.jpg

Piping Part 2-Plastic Pipe

Workshop Objectives Participate in discussions, demonstrations, and hands-on activities that will enable you to: Identify the characteristics of plastic pipe. Install a plastic pipe. Install a tracer wire.

Introduction To Plastic Pipe Installation methods Proper handling, storage, and transportation Typical trench requirements Physical characteristics ASTM number Outside diameter Thickness Image Retrieved July 2013: http://www.napipelines.com/checking-ids/

Cutting and Joining Plastic Pipes Cutting Pipes Correct tools and PPE Correct cutting technique Joining Pipes Types of joins used Socket heat fusion Electrofusion Butt fusion Mechanical joint Image Retrieved July 2013:http://www.twi.co.uk/technical-knowledge/job-knowledge/butt-fusion-welding-of-plastics-058/

Installing Plastic Pipe Stringing the pipe and minimizing stress Grading the service line Lowering the pipe into the trench Backfill materials and cover requirements Pressure testing Activity Worksheet #1 Image Retrieved July 2013: http://s0.geograph.org.uk/geophotos/01/03/67/1036734_a5dd34b0.jpg

Tracer Wire What it is and what it does Problems when a tracer wire is not used Correct tools and PPE Correct placement Installing the tracer wire Opening trench Bore Installation Plow-in/planting installation Testing Activity Worksheet #2 Image Retrieved July 2013: http://s0.geograph.org.uk/geophotos/01/03/67/1036734_a5dd34b0.jpg

Piping Part 3-Fittings and Couplings

Workshop Objectives Participate in discussions, demonstrations, and hands-on activities that will enable you to: Join pipes successfully Make a stab fitting Follow the correct processes and procedures to create commonly used joints. Butt-fusion Hydraulic butt heat fusion Sidewall heat fusion Electrofusion process

Stab Fittings Features and characteristics OSHA requirements Correct tools and PPE How to correctly install a stab fitting Inspect the fitting Check for leaks Activity Worksheet #1

Compression Couplings Commonly used to join pipes Mechanical Transition Types – per installation requirements Bolted (pipes over 2 inches) Hydraulic (pipes 2-4 inches) Insulated couplings Non-insulated couplings Selecting the right coupling for the job Material Diameter Wall Thickness Operating Pressure Visually inspect and prepare pipe Image Retrieved July 2013: http://www.directindustry.com/prod/shie-yu-machine-parts-industrial-co-ltd/plastic-compression-pipe-fittings-77396-723575.html

Install Compression Couplings Installing Assembled Non-assembled Cathodic protection Visual inspection Testing for leaks Soap test CGI Activity Worksheet #2 Image Retrieved July 2013: http://www.gfac.com/content/gfps/country_MX/es/about-GF-PipingSystems/media_and_news/media-releases_gfps/mediareleases_gfps/media-releases/new_push_fit_and_compression_joints.html

Manual Butt Heat Fusion Tools and PPE Prepare the heat iron The fusion process Cooling time Final inspection What to look for: cooled joint, melt bead Activity Worksheet #3 Typical usage Heat fusion Saddle heat fusion Installation requirements Protective measures Gaseous atmosphere Electrical precautions Electrostatic precautions

Hydraulic Butt Heat Fusion Typical usage Tools and PPE The fusion process Hydraulic controls/determine drag Carriage pressure Facing pressure Fusion pressure Drag pressure Cooling time Final inspection What to look for Activity Worksheet #4 Image Retrieved July 2013: http://www.directindustry.com/prod/ritmo/hydraulic-butt-fusion-welding-machines-25391-495085.html

Sidewall Heat Fusion Typical usage Tools and PPE The fusion process Cooling time Final inspection What to look for Destroying bad fittings Activity Worksheet #5 Image Retrieved July 2013: http://www.isptechcorp.com/PlasticWeld/images

Electrofusion The electrofusion process Typical usage Tools and PPE Tie-ins Repairs Tools and PPE Electrofusion processor Electrofusion fittings Clamping tool Pipe cutting tool(s) Power source Pipe cutting tools Scraper Determine stab depth Prepare the pipe The fusion process Cooling time Leave clamping device in place Final inspection Troubleshooting Activity Worksheet #6

Sources Occupational Safety and Health Administration (OSHA) Compressed Gas Association (CGA) US Department of Transportation (FHWA) Code of Federal Regulations: §192.53 General §192.271 Scope. §192.63 Marking of materials. §195.112 New pipe. §192.275 Cast Iron Pipe §192.143 General requirements. §192.277 Ductile Iron Pipe. §195.214 Welding procedures. §192.279 Copper Pipe. §192.225 Welding procedures.

Sources, continued Code of Federal Regulations: §192.59 Plastic pipe. §192.121 Design of plastic pipe. §192.123 Design limitations for plastic pipe. §192.143 General requirements §192.151 Tapping. §192.159 Flexibility. §192.273 General. §192.281 Plastic piping joining. §192.283 Plastic pipe: procedures. §192.285 Plastic pipe: Qualifying persons to make joints.

Sources, continued Code of Federal Regulations: §192.287 Plastic pipe: Inspection of joints §192.307 Inspection of materials. §192.311 Repair of plastic pipe §192.321 Installation of plastic pipe. §192.513 Test requirements for plastic pipelines. §192.627 Tapping pipelines under pressure. §1926.651 Specific excavation requirements. §1926.652 Requirements for protective systems.

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