Tank Industry Consultants AWWA Tank Standard D101 The Development of the Inspection of Water Tanks and Related Facilities Standard Chip Stein, P.E. Managing Principal Tank Industry Consultants AWWA Standards are not l Specifications l Endorsement l Recommendation Tank Industry Consultants Standards vs Specs l Standards - minimum technical requirements ( i.e. the what) l Specifications the contractual relationships ( i.e. when and by whom and through standards and supplemental requirements the what) Tank Industry Consultants AWWA Standards are l Guideline l Solid Base l Frequently cited in project specifications l A reliable source of information Tank Industry Consultants Standards-Making Process Standards Committee Producer Group Consumer Group General Interest Tank Industry Consultants Standards-Making Process l Committee Consensus l Sent to Standards Council, if approved l Published for Review and Comment l Sent to Executive Committee l Published l start the process all over Tank Industry Consultants Five-Year Review/Revision Tank Industry Consultants Water Storage Tank Standards Tank Industry Consultants American Water Works Association AWWA Chip Stein, P.E. Chair Chip SteinChip Stein, P.E. Steve Meier, P.E., S.E. Patrick Brown, P.E. Chip Stein, P.E., Vice Chair Tank Industry Consultants Current AWWA Steel Tank Standards l D Welded Carbon Steel Tanks for Water Storage l D Coating Steel Water-Storage Tanks l D Factory-Coated Bolted Steel Tanks for Water Storage l D Impressed Current Cathodic Protection l D Sacrificial Anode Cathodic Protection l D Composite Elevated Tanks for Water Storage l D Aluminum Dome Roof l C Disinfection Tank Industry Consultants Standards, Manuals, and Guidelines for Inspection of Water Storage Tanks Tank Industry Consultants AWWA D101 Inspection of Water Tanks and Related Facilities l Last Revised 1953 l Reaffirmed without revision 1986 l Withdrawn December, 1998 l Undergoing complete revision l Subcommittee Chair Chip Stein Tank Industry Consultants Whats Happening in the D101 Committee?? Tank Industry Consultants Types of Structures l Clearwells l Concrete Tanks l Bolted Tanks l Membrane Covered Reservoirs l Stainless Steel Tanks (bolted and welded) l Filter Beds l Hydropneumatic Tanks (operating at less than 15 psi) l Clarifiers l Current Market Demand Tank Industry Consultants Proposed Foreword l Stated Purpose of Standard l Asset Management Approach l Goal of Sustainability l References to C652, D100, D102, D103, D107, D110 Tank Industry Consultants Proposed Section A Elements of Facilities l Nomenclatures l Elements Tank Industry Consultants Proposed Section B Inspection of New Construction l Soils/Geotech l Documentation/Work-In-Process Evaluation Reporting l Inspections specific to type of construction Welding Concrete Placement Coatings Tank Industry Consultants Proposed Section C Inspection of Existing Structures l Frequency l Coatings l Structural l Sanitary l Safety l Tank and Site Security l Reporting Requirements Tank Industry Consultants Inspection Methods l Underwater Tank Evaluation l In-Service Cleaning, as it relates to the inspection of the structure l Rafting l Commentary Checklist - advantages and disadvantages of Dive, ROV, and Drained Methods l Commentary - Owner Specify Motivation for having Tank Inspected Tank Industry Consultants AccessoriesAccessories l Cathodic Protection l Mixing Systems Tank Industry Consultants Proposed Section D Inspection of Existing Tank Rehabilitation l Submittal Review l Appurtenance and Welding Repairs l Repairs l Surface Preparation l Emission and Overspray Containment l Air Monitoring Environmental and Personnel Air l Safety l Coating Application l Ventilation during Coating Application l Documentation/Work-In-Process Evaluation Reporting l Punch Lists Tank Industry Consultants Proposed Section E First Anniversary Evaluation l Type Drained, ROV, Dive l Disinfection l Reporting Minimum requirements for how this evaluation should be conducted and reported Tank Industry Consultants Proposed Section F Qualifications l Engineering Firm Experience Insurance Licensed Engineer l Inspector Experience Climbing Ability Association Certifications (NACE, SSPC) Tank Industry Consultants Proposed Appendices l Bibliography l Organizations l Cold Weather Operation of Water Tanks l Cellular Antennas Considerations l Site Selection l Tank Style Analysis l Tank Sizing Considerations l Sample Inspection Forms l Inspection Certifications and Associations l Commentary Tank Industry Consultants AWWA M42 Steel Water-Storage Tanks l First Edition 1988 E. Crone Knoy (deceased), Technical Editor l Chapter Author Chip Stein l Revised in 2012 by Chip Stein Chip Stein Tank Industry Consultants Steel Water Storage Tanks l Published by McGraw Hill in conjunction with AWWA l Technical Editor Steve Meier l Chapter Author Chip Stein l Chapter Author Jennifer Coon Tank Industry Consultants National Fire Protection Association Tank Industry Consultants NFPA 25 (2011) Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems l Frequency Daily Heating System Weekly Water Temperature Monthly Water Level Quarterly Tank Exterior, Support Structure, Catwalks/Balconies, Ladders, Site Annually Expansion Joints, Coatings Interiors 3 years vs 5 years Tank Industry Consultants NFPA and AWWA Differences l Frequency l Site Evaluation (combustible storage, brush, fire exposure hazard) l NFPA addresses all types of tank construction l NFPA requirements not found in AWWA Holiday Detection Underbottom Ultrasonic Testing (or Coupon Removal) Vacuum-Box Testing of Floors (NFPA 22) Tank Industry Consultants What does this mean to ME? Tank Industry Consultants Questions???Questions???