DISTRIBUTION CONSTRUCTION WORKSHOP...Welding Steel Specific – • All Company Welders – 18...
Transcript of DISTRIBUTION CONSTRUCTION WORKSHOP...Welding Steel Specific – • All Company Welders – 18...
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PHMSAPHMSADISTRIBUTION CONSTRUCTION WORKSHOP
St. Louis, MissouriApril 20, 2010
Industry Perspectives on Installation of Steel Materials
Scott Meierotto
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29 years with Laclede23 years in Standards10 as Superintendant
Degrees in Chemistry and Biology ASTM F17 Plastic Piping Systems
NACE Internal Corrosion Technologist
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Our System• Largest Gas Distribution
S i Mi iSystem in Missouri• Customers predominantly
residential– We serve 630,000
customers• More than 16,000 miles of
gas main and related servicegas main and related service pipe
• Distribution system is primarily coated andprimarily coated and protected steel, polyethylene and cast iron pipe.
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Material Choice ConsiderationsMaterial Choice Considerations
• AvailabilityAvailability• Pressure
Si• Size• Historic• Current
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• Installation of Steel and PE are different, ,but there are many similarities– Contractors used on limited basis– Training/OQ– Design– Written Standards– Material Quality– Pre-installation Activities– Excavation
I t ll ti A ti iti– Installation Activities– Post-installation Activities
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PE/Steel Similarities• Contractors – Other than NDT
Very Limited– Very Limited– Prequalify Review OQ
C I t it– Company Inspector on site
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PE/Steel Similarities• Training/OQ – Quality of Employees
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PE/Steel Similarities
• Training/OQ g Q– Include New Construction– MO has had a Personnel Qualification Requirement
since 1989since 1989– Initial Training - 1 Week– 3 yr Refreshers - 2 Daysy y– Annual Training - 1 Day
• Classroom • Written• Open Discussion • Hands On• Open Discussion • Hands On• Field Training/Observation
– Weather day
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PE/Steel Similarities• Training/OQ Cont.
– “Standards & Testing Notes”g• Insulation of Meter Sets• Trace Wire
I l t d t lli fitti
• Regulators and Overpressure ProtectionE Fl V l• Isolated metallic fittings
• Description of print line and D2513 for PE pipe.
• Meter Location and Vent Lines
• Excess Flow Valves• Definitions of the Gas Industry• ANSI Pressure Ratings
Pi li E i &• Meter Location and Vent Lines• Natural Gas• Pipe Joining Methods• Coating
• Pipeline Expansion & Contraction
• Color Coding• Pipe Dimensions• Coating
• Applicable Codes• Use of Stainless Steel Clamps• Electrofusion
• Pipe Dimensions• Static Electricity & Squeeze-off• Steel Pipe Print Line
• Electrofusion
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PE/Steel Similarities
• DesignDesign– Use of ARC GIS and Designer
Includes Standardized Material Lists and– Includes Standardized Material Lists and Compatible Units (CUs)
– Reviewed by various Departments– Reviewed by various Departments• Design Supervision• EngineeringEngineering• Construction
– Checklists
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PE/Steel Similarities
• MapFrameMapFrame– Electronic Maps in Field
• Valve Isolation• Field Notes (As-Built)
– Material Catalog– MSDSs– Shoring Information– Work Zone Safety– Standards Manual
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PE/Steel Similarities
• Written StandardsWritten Standards– Hardcopy/Electronic
General– General– Material Specific
Joining Procedures– Joining Procedures– Welding
I ti– Inspection– Testing
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PE/Steel Similarities• Material Quality
PE/Steel Similarities
–Clear Specifications–New Product Testing prior to purchase
QA I ti f I i M t i l–QA Inspection of Incoming Material• Visual• Physical• Physical• Destructive
• Pre-installation ActivitiesPre installation Activities–Locates–Design modifications due to site conditionsg
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PE/Steel Similarities• Excavation
PE/Steel Similarities
–Depth–Soil Conditions
• Installation Activities–Pipe Protection/Handling–Clearance from other structures–Testing
B kfill/R k Shi ld–Backfill/Rock Shield–Field Inspectors
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–PHOTOSPHOTOS
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PE/Steel Similarities
• Post-installation Activities
PE/Steel Similarities
Post installation Activities–Record Collection/Documentation
As Built–As-Built–Pressure Test Data
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Steel Specific
• Design
Steel Specific
Design–Reviewed by various Departments
• Checklist• Cathodic Protection• Pig Capability Requirements
W t C ll ti (D i ) / I t l C i• Water Collection (Drips) / Internal Corrosion–Special Considerations
• Boring• Boring• Casings• Exposed Pipe
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Steel SpecificSteel Specific
• Training/OQTraining/OQ– Annual Training All Employees
• Coating Types/ApplicationCoating Types/Application • Hydrotesting • Insulation
Specific Fitting Iss es• Specific Fitting Issues• General Tapping
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Steel SpecificSteel Specific
• Training/OQTraining/OQ– Cathodic Protection Technicians
• Hands OnHands On• Anodes • Jeeping
Locating• Locating• Locating/Clearing Shorts• Use of Multimeter
– Pipe/Soil Readings– Instant Off
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Steel Specific
• Training/OQ Cont
Steel Specific
Training/OQ Cont.–Drill and Stop
• Annual – 1 Day• Annual – 1 Day– Classroom– Written– Hands On
• OJT – Supervisor on site for all Tap/Stop >2”• Supervisors 20+ Yrs• Supervisors 20+ Yrs.
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Steel Specific• Training/OQ Cont.
Welding
Steel Specific
– Welding• All Company Welders
– 18 Contract 13 weld routinely2 Supervisors– 2 Supervisors
– 1 – 24 Years Experience Average 13 yrs– Qualification
• Initial Qualification API 1104 Multiple QualificationInitial Qualification API 1104 Multiple Qualification Destructive testing
• 2 times/yr SMAW Radiography• Oxy-Acetylene
– Single Qualification 2” and <2” – ¾” Tee
– Track all Radiography by WelderInspection Requirements by Pressure and Size– Inspection Requirements by Pressure and Size
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Steel Specific• Training/OQ Cont.
Steel Specific
– Welding Contractor• Copies of Procedure Qualifications• Copies of Welder Qualification• Copies of Welder Qualification
– Multiple – Single – Keep in mind Essential Variables
Welding in Process• Welding in Process
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Steel Specific• Welding
Steel Specific
–3rd Party NDT• Company 40 yrs old
5 40 Y E i A 22• 5 – 40 Years Experience Average 22+ yrs• ASNT Level III or II• AWS CWI• AWS CWI• OQ ISN and Veriforce (Include New Construction)• Review/Audit AnnuallyReview/Audit Annually
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Steel Specific
• Other Considerations
Steel Specific
Other Considerations–Crews Outfitted for Steel Generally Stay on Steel
Welders Experience–Welders Experience
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Concerns
• Aging Workforce
Concerns
Aging Workforce –Welding - Fewer workers entering the field
NDT–NDT• Work Ethic
Final Thoughts• Many Similarities• Experience• Experience
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Questions?