ATST Safety Review Enclosure Heather Marshall Enclosure Engineer

ATST Safety Review Enclosure Heather Marshall Enclosure Engineer January 2011

Work Package Overview Enclosure • Protect the Telescope & Optics • Track with Observations • Maintenance access for Telescope & Optics

Work Package Overview • WBS Area(s): 5. 0 • Responsible Engineer: Heather Marshall • Group Manager: Mark Warner • Overall Plan For Design, Construction & Site Assembly/Test • • • Design Contractor(s): AEC-Idom Fabrication Contractor(s): To Be Determined Site Construction Contractor(s): To Be Determined. AEC-Idom and San Juan Construction intend to offer a Construction Manager at Risk Option add-on to the Design Contract.

Schedule Overview

Reference Design Preliminary Hazard Analysis

Reference Design Preliminary Hazard Analysis • 40 Hazards Identified in Reference Design PHA • Appendix to TN-0045 Enclosure Reference Design Studies & Analysis • There WILL be differences between the PHA and the design hazard analysis

Reference Design Preliminary Hazard Analysis • Personnel Safety Hazards: – Cable Wrap & Azimuth Mechanical Area • • Confined Space Pinch/Crush Hazard Electric Hazard Low Overhead Clearance – Enclosure Exterior, Catwalk, Personnel Lifts • Fall Hazard • Dropping or Falling Objects – Access Platforms • Fall Hazard • Dropping or Falling Objects (Reference Design)

Reference Design Preliminary Hazard Analysis • Equipment Safety Hazards: – Dropping Objects (tools, fasteners) • • Access Platforms Personnel Lifts Bridge Crane Jib Crane – Abandoned/Unattended Tools – Rotation Conflicts • Cranes/TMA • Enclosure/Personnel Lifts • Equipment/Equipment Fixtures (e. g. Bogie) • Rear Access (M 1 Cart) Door, Track, Guard Rails/S&O Building (Reference Design)

Reference Design Preliminary Hazard Analysis • Environmental Safety Hazards: – None Noted in PHA – Watch List: • • Lubricants Paints Coolant in Utility Wraps Construction Site Environmental Safety – Wildlife

Safety Plans Design Fabrication & Test Transportation Construction Integration, Test & Commissioning Operations

Design for Safety • Enclosure Safety Requirements – Project Documents & General Requirements • • • SPEC-0030 Conditions for Working at the Site SPEC-0031 Contractor Safety & Health Specification SPEC-0035 ATST Hazardous Material and Waste Management Program Interface Control Documents – space allocations, etc. IBC, OSHA/HIOSH, NEC, NFPA, ANSI-RIA Design Safety Factors ~ 1. 5 -2. 2 • LIC and GIS Interface • – Safe as an independent system – GIS over-ride ability – Safety-rated switches and sensors – Allen-Bradley Guard. Logix & Control. Logix hardware Safe Access for Maintenance Procedures – Walkways and Platforms – Lifts

Internal Access Walkways

Design for Safety • Failure Mode & Effects Criticality Analysis (FMECA) – Prevent personal injury – Prevent damage to telescope – Component life and reliability: spares plan • Safety Devices – – – – – Non-back-driveable motors Shock Absorbers Enabling Switches Power-off, Fail-safe components Emergency-Stops Emergency Lighting Emergency Power Egress HMI Maintenance Consoles

Example – Reliability Analysis

Design for Safety • Preliminary Hazard Analysis – Who: AEC-Idom, Marshall, Phelps, Hubbard, Bulau – When: Prior to and during every other monthly meeting – How: Review of hazards and mitigations. Planning and understanding use-cases – Results: 55 Hazards identified so far, divided by phase and zone • Navisworks/Modeling/ Visualization – “getting small”

Seven Potentially Hazardous Zones

Preliminary Hazard Analysis – Example ENCLOSURE Nº Zone 1 a HAZARD CAUSES EFFECTS PRELIMINARY HAZARD ANALYSIS RISK INITIAL PROJECT RECOMMENDED PHASE(S) IMRI VALUE CAT. ACTION LAST UPDATE (2010 -12 -07) RISK AUTHOR COMMENTS FMRI VALUE CAT. CONST 1 b All Zones 1 c 1 d Accident due to human error or installation IT&C defect during manipulation of Personnel injury Accidental handling and system personnel fall devices damage Fall of dust or grease form the MAINT cranes on floor or telescope instrumentation 2 -D 1 -B 2 High The design of the cranes and staircases shall comply with the applicable safety standards. In particular, in all exposed positions lifelines shall be provided and the use of the individual protection equipment (IPE) shall include harnesses. The design of the access, staircases to access this zone, shall comply with the applicable safety standards Periodic cleaning of the AEC walkways IDOM Drainage system shall be provided Besides, the use of the individual protection equipment (IPE) shall include harnesses 10 CONST 2 b A loose object IT&C inadvertently left in area, MAINT Collision or snag accident due to Personnel injury or stepping on human error and / or system moving or during damage statics objects manipulation of OPS handling devices 2 c All Zones 3 -B 9 Tool counts, visual inspection prior to exiting area and the Serious use of the individual protection equipment (IPE) including hard hats Safe storage of tools Safety interlocks AEC IDOM An specific safety plan shall Medium be developed for Construction Phase. 2 -D 10 An specific safety plan shall be developed Medium for Installation & Commissioning Phase. Special attention shall Medium be taken regarding access to this zone Hazard not foreseen during Operation access to this zone is forbidden in this mode. 3 -D 14 Medium OPS 2 a 2 d MITIGATION MEASURES Hazard not foreseen during Operation access to this zone is forbidden in this mode.

Visualization – Azimuth Cable Wrap

Visualization

Visualization

Fabrication & Test Safety • Implement Hazard Analysis Mitigation Measures – Acceptance Test Procedures – LIC/GIS Integration • Procurement Plans & Requirements – Contractor Certification • OSHA Inspection Records • Audit of Safety Programs & Procedures – AURA Inspections – 3 rd Party Inspections • Safety Plans for this phase will be further developed in the future

Transportation Safety • Implement Hazard Analysis Mitigation Measures • Hale Road restrictions – Maximum load size – Maximum load mass – Number of loads • Shipping – BOMs – Special Packaging – Insurance • Safety Plans for this phase will be further developed in the future

Site Construction Safety • Implement Hazard Analysis Mitigation Measures • Multiple Contractors on Site – Enclosure Contractor(s) – TMA Contractor(s) – FTS Contractor(s) • Daily Toolbox Meeting - allocate space – Site Superintendent – Safety Officer – COTR • Safety Plans for this phase will be further developed in the future

IT&C Safety • Implement Hazard Analysis Mitigation Measures – LIC/GIS Integration • TMA Personnel, FTS Personnel etc. • Safety Plans for this phase will be further developed in the future

Operations Safety • Implement Hazard Analysis Mitigation Measures – Training and Certification of Employees – Maintenance Procedures • Safe Access Required • Walkways and Platforms • LO/TO Procedures – Inspection Schedules • Safety Plans for this phase will be further developed in the future

Visualization - Shutter Drive Maintenance

Top Issues & Risks • Personnel – Pinch Points – Fall Hazards – Confined Spaces • Equipment – Carousel Entrance Aperture Cover/M 1 Cover sequencing logic and safety – Tight Physical Interfaces • Enclosure/S&O • Enclosure/TMA

Open Discussion • Questions?