Texas Chapter ISA Annual ConferenceSeptember 28 2012ANSI A300 Part 9:in a utility world Michael SultanDavey Resource Group
Reality BitesPuget Sound Energy, 1998 – 2007 34,000 tree-caused outages Trees were primary cause of unplannedservice interruptions 95% due to tree failureFrom Arboriculture & Urban Forestry July 2011. 37(4): 147 - 151
Key Points What is ANSI A300 (Part 9)?How does it relate to IVM?How does it apply to utilities?
ANSI Standard A300 Tree RiskAssessment - Part 9a. Tree Structure Assessment Tree StructureTree RiskResidual Risk
ANSI Standard A300 Tree RiskAssessment - Best Management Practices
What about Tree Structure?Defects Architecture Loads
Failure occurs when load exceeds strength
Types of Failures: Entire tree failure (uprooting) Trunk failure Branch failure
Loads on Trees:Gravity Self weight Rain, snow, ice Other (e.g. climbers, rigging)Wind Force (dynamic)Direction
Forces affecting trees ShearTensionFMDTorsionCompression
What is RISK?Probability Consequences
Likelihood of Failure and Impacting a TargetLikelihoodofFailureImminentLikelihood of Impacting TargetVery LowUnlikelyLowMediumHighSomewhatLikelyLikelyVery obableUnlikelyUnlikelyUnlikelyUnlikely- Table 1 -
Risk Rating Matrix (utilizing results of table 1)LikelihoodofFailure andImpactConsequences of FailureNegligibleMinorSignificantSevereVery LowLowLow- Table 2 -
ANSI Standard A300 Integrated VegetationManagement - Part 7a. Electric Utility Rights-of-way Danger TreeHazard TreeTree Pruning and Removal
Trees and tree branches with thepotential to affect utility facilities shouldbe monitored for risk, and pruned orremoved as appropriate (refer to ANSIA300 Part 9, Tree Risk Assessment).
Can we predict what will happen?Species Specific Failure Data Wind and Storm Data Site and Forest Conditions
What does it all mean?Management v MaintenanceManagementCostMaintenanceTime
C OM M U N I C A T E EDUCA T E
What we’ve covered ANSI A300 (Part 9)How it relates to IVM?How it applies to utilities?
Michael SultanDavey Resource Group214 . 605 . 2660Michael.Sultan@davey.com
ANSI A300 Part 9: A nce 28 2012. Reality Bites Puget Sound Energy, 1998 – 2007 34,000 tree-caused outages Trees were primary cause of unplanned service interruptions 95% due to tree failure From Arboriculture & Urban Forestry July 2011. 37(4): 147 - 151 . Key Points What is ANSI A300 (Part 9)? How does it relate to IVM? How does it apply to utilities? ANSI Standard A300 Tree Risk Assessment .
Subclause 1.1 to 1.3 excerpted from ANSI A300 (Part 1) – Pruning 1 ANSI A300 standards 1.1 Scope ANSI A300 standards present performance stan-dards for the care and management of trees, shrubs, and other woody plants. 1.2 Purpose ANSI A300 performance standards are intended for use by federal, state, municipal and private entities
ANSI A300 (Part 6)-2005 Transplanting, ANSI Z60.1- 2004 critical root zone: The minimum volume of roots necessary for maintenance of tree health and stability. ANSI A300 (Part 5)-2005 Management . development impacts: Site development and building construction related actions that damage trees directly, such as severing roots and branches or indirectly, such as soil compaction. ANSI A300 (Part .
-ANSI A300 (Part 4)-2002 Lightening Protection Systems Tree Selection (Chapter 6) Tree Planting (Chapter 8 and 9) - ANSI A300 (Part 6)-2005 Transplanting Water Management (Chapter 13) Nutrient Management (Chapter 12) -ANSI A300 (Part 2)-1998 Fertilization Introduction to the "ANSI Z133.1-2000 Pruning, Repairing, Maintaining, and Removing Trees and Cutting Brush-Safety Requirements" Pruning .
TCIA (ASC A300) (Tree Care Industry Association) Revision BSR A300 Part 2-201x, Tree, Shrub, and Other Woody Plant Management - Standard Practices (Soil Management a. Assessment, b. Modification, c. Fertilization, and d. Drainage) (revision of ANSI A300 Part 2-2011) A300 (Part 2) Soil Management standards are performance standards for
requirements for safety instrumented systems (SIS), a new edition of the IEC 61511 international standard was published. Recently published, ANSI/ISA 61511-1 brings the ISA standard into complete alignment with IEC 61511-1. This paper will review ten major themes of change between ANSI/ISA 84.00.01 and ANSI/ISA 61511-1. 1 Introduction
3 A300 OUTLANDER Calibro Camera mm Canna cm Strozzatura Bindella mm Calciolo Valigetta Dotazione Prezzo Pubblico con Iva A300 Outlander 12 76 66,71,76 0& 6x6 Gomma PPL 1 strozzatore montato (***) 997,00 A300 Outlander Synthetic 12 76 66,71,76 0& 6x6 Gomma PPL 1 strozzatore montato (***) 997,00 A300 Outlander Camo Max4 12 76 71,, 76 0& 6x6 Gomma PPL 1 strozzatore montato (***) 1.007,00
Send comments (with copy to firstname.lastname@example.org) to: Christina Earl, (315) 339-6937, email@example.com TCIA (ASC A300) (Tree Care Industry Association) Revision BSR A300 (Part 3)-201x, Tree Care Operations - Tree, Shrub, and Other Woody Plant Management - Standard Practices (Supplemental Support Systems) (revision of ANSI A300 (Part 3)-2006)
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