View
218
Download
0
Category
Preview:
Citation preview
Navigating a Navigating a MOTEMS MOTEMS AuditAudit
Ted Trenkwalder, P.E., S.E.
Structural Engineer
Ben C. Gerwick, Inc.September 10, 2008
Presentation OutlineIntroduction
Ben C. Gerwick, IncAudits Completed for Four High Risk TerminalsFirst two Audits Submitted and Reviewed by CSLC
The Audit ProcessLessons LearnedSummaryQuestions
The Audit ProcessSurveys, Surveys, SurveysOperational Capacity and Demand AnalysesSeismic Capacity and Demand AnalysesChecklists, Missing Information, and Deficiency TablesExecutive Summary and Audit Submittal
The Audit ProcessSurveys, Surveys, Surveys,…
Data Collection and ReviewAbove and Below Water InvestigationsGeotechnical InvestigationsHydrographic and Topographic SurveyMaterial Testing
The Audit ProcessData Collection and Review
Existing As‐Built DrawingsExisting As‐Built SpecificationsExisting Condition Survey(s)Existing Geotechnical InformationExisting Hydrographic or Topographic InformationExisting Vessel Information and General ArrangementsExisting Terminal Operations Manual(s) Available Information from Public Records
The Audit ProcessAbove and Below Water Inspections
PE Divers and Level of InspectionsCoordinate Inspections and Critical MembersCompile Inspection Results and Assign Ratings Condition Survey Report (s)
The Audit ProcessGeotechnical Investigations
Borings and CPTs Available borings may not meet MOTEMS 100‐ft requirementMap both transverse and longitudinal soil profilesConsider potential repairs and upgrades to facilities
Seismic Analyses and Hazard AnalysesSite Specific Response SpectraSoil Liquefaction and lateral stabilityP‐y and T‐z requirementsAbutments
The Audit ProcessOperational Capacity and Demand Analyses
Operational Dead and Live LoadsBerthing Mooring
Winds and CurrentsPassing Vessel Effects
Fender SystemsMooring Hardware
The Audit ProcessSeismic Capacity and Demand Analyses
SeismicDead Load and Equipment Inertial and Kinematic Loads
The Audit ProcessChecklists, Missing Information, and Deficiency Tables
CSLC Draft Audit Manual ChecklistsMissing Information Deficiency Tables
The Audit ProcessExecutive Summary and Audit Submittal
Structural Summaries and CARsComponent Summaries and RAPsPath Forward
Addresses deficiencies and scheduled repairs
Audit Submittal Two (2) Copies and CDs to CSLC
7 to 11 Volumes (4‐in binders)1,200 to 3,000 pages 250 ‐ 750 MB of information
Lessons LearnedPlanning and Scheduling Immediate Mitigation May be RequiredTesting is knowledgeMOTEMS ModificationsCommunication
Lessons LearnedPlanning and Scheduling
Recommend 12 months from inspection to submittal
Lessons LearnedPlanning and Scheduling (Continued)
Start Condition Surveys earlyCurrents, tides, and weather will affect inspection schedulesShip schedules will interrupt inspection schedules
Lessons LearnedPlanning and Scheduling (Continued)
Start Geotechnical field investigations early also
Site Specific Spectra and soil parameters required for analysesPotential Liquefaction and Lateral Spreading may direct mitigationmeasures
Lessons LearnedPlanning and Scheduling (Continued)
Compile Draft Checklists & DeficienciesDevelop repair design plan to eliminate operational deficienciesPlan CSLC walk down after surveys and deficiency direction
Review Path Forward with Corporate Local MOTs require input and approval from CorporateCSLC will hold MOTs to Repair Plan Schedules
Lessons LearnedMitigations may be required
Audits are performed on circa 1950 terminals with some improvements
Lessons LearnedMitigations may be required (Continued)
Expect Operational Deficiencies in Older Structures
Damaged Spring Fender Assembly
Relocated Mooring Hook
Lessons LearnedMitigations may be required (Continued)
Events Happen
Lessons LearnedTesting is knowledge
Existing Fender Assembly
Pipeway Repair Connection
Lessons LearnedMOTEMS Audit Modifications
Executive Summary Table ModificationsAbove and Below Water CARsFollow‐Up Action Items
Lessons LearnedMOTEMS Audit Modifications (Continued)
Deficiency Table ModificationsSeparate columns for Deficiency and Suggested MitigationAdded Date Completed column
Lessons LearnedMOTEMS Audit Modifications
Condition Surveys vs. Assessments
A CAR is a Condition Assessment RatingA Condition Survey refers to loss of section
Underwater vs. Above waterMOTEMS states +3‐ft MLLW for underwater survey. Above water above +3‐ft MLLW
Lessons LearnedCommunication
Need a Project Champion at the TerminalCoordination between MOT, Audit Team, and CSLC
Include CSLC in schedule and walk throughInform CSLC of known deficiencies and directions
Request Clarification from SLC, if needed.
SummaryAudit Process includes surveys, analyses, and checklists, deficiency tables, summary, and submittal.Recommend 12 months to complete AuditExpect mitigation requirements for older facilitiesTesting may help for marginal capacitiesMOT needs a Project Manager with good communication skills
Navigating a Navigating a MOTEMS MOTEMS AuditAudit
Ted Trenkwalder, P.E., S.E.
Structural Engineer
Ben C. Gerwick, Inc.
Recommended