Hazard Analysis System for SLAC Personnel

SLAC AREA HAZARD ANALYSIS

Location(s= ): B033 GLAST: includes clean rooms, office area, industrial area &nbs= p; &= nbsp;

Date: 29 May 04

Processe= s / Equipment in Area

Hazards =

Recommen= ded Controls & Actions

Assembly of space hardware in clean rooms. Rooms contain nitrogen ports for parts preservation i= n case of HVAC outage.

· Nitrogen sources to room may present ox= ygen deficiency (asphyxiation) hazard

· May contain short term hazards associated with the equipment (e.g= ., magnetic fields, high voltage)

· Clean rooms are covered by oxygen sensors connected to a building-wide alarm system.

· Evacuate during any alarm in clean room

· DO NOT ATTEMPT to alter, service, or maintain equipment with= out specific training from local system experts;

· Only trained operators may operate or work on apparatus

· Obey all signs and alarms.

Van DeGraaf generator for hardware testing (may not be present)

· Overexposure to ionizing radiation

· Radiation worker training (RWT-1) required in immediate room while generator is in place.

HVAC and air handling system outside west buil= ding wall

· Cuts, lacerations, abrasions, crushing, or amputation from body p= art caught in moving parts

· Shock or arc flash from energized electrical condustors

· Some air handler compartments are permi= t-required confined spaces requiring PRCS training (ES&H Course #144), as well as other administrative and PPE controls. Contact pager 570-8742 if planni= ng an entry.

· PRCS compartments are labeled DANGER-- DO NOT ENTER-- PERMIT-REQU= IRED CONFINED SPACE

· Guards kept in place over moving parts prevent access of body par= ts.

· Use lock/tag procedures when working on motors<= /p>

Overhead bridge crane (high bay)

Overhead bridge crane (clean room)

· &nbs= p; Struck by moving or falling load or load component

· &nbs= p; Fall from bridge or trolley during servicing (high bay only)=

= · &nbs= p; Crane riggers and operators must receive SLAC H&R certification (training course #280 et seq.) for bridge cranes of like capacity. See http= ://www.slac.stanford.edu/esh/training/trainops/280.html .

= · &nbs= p; Crane maintenance personnel wear fall-protection harnesses while within 6 feet of any unprotected edge from which a fall of >4 feet is possible.

= · &nbs= p; Cranes are inspected and certified regularly

Compressed gas in cylinders: sulfur hexafluoride, nitrogen

· Injury from flying material after catastrophic failure after dropping, tipping, or other physical insult of cylinders

· All cylinders are double chained to prevent tipping

· Cylinders are stored upright and capped when not in use

· Cylinders are stored away from motor traffic areas

Flammable liquids (isopropanol, spray paint)

· Fire

· Inhalation

· Kept in flammable storage cabinets when not in use.

· Smoking prohibited in building.

· Use sparingly and away from ignition sources.

· Fire extinguishers are found in every indoor area.

· RECOMMENDED: Fire extinguisher training for regular occupa= nts of area.

· Liquid containers are labeled with manufacturer’s label or = SLAC NFPA diamonds.

Chemicals: organic solvents, lubricants, contact cleaners, soldering flux=

· &nbs= p; Fire

· &nbs= p; Intoxication through inhalation or absorption of chemicals

· &nbs= p; Chemical burns

· Containers are labeled with manufacturer’s label or SLAC NF= PA diamonds.

· Flammable liquids are kept in flammable storage cabinets when not= in use.

· Smoking prohibited in building.

· Solvents are used sparingly and away from ignition sources.<= /o:p>

· Fire extinguishers are found in every indoor area.

Portable and fixed ladders (Fixed ladders access clean-room roof and overhead brid= ge crane)

· &nbs= p; Injury from fall

· &nbs= p; Injury from being struck by falling object

· RECOMMENDED: Stairway and Ladder Safety training,
Course 293

= · &nbs= p; Inspect ladders before use

= · &nbs= p; Avoid ladder footprint areas when ladders are in use<= o:p>

= · &nbs= p; Carry items up ladders such that both hands are free<= o:p>

HIGH VOLTAGE and STORED ELECTRICAL ENERGY = in electrical panels and lines.

· &nbs= p; Electric shock

· &nbs= p; Arc flash/explosion

· &nbs= p; Fire

· Work on equipment is allowed only by experienced, qualified perso= nnel who are high-V trained (course #274) or those under their immediate escor= t.

· Check for live conductors before drilling into any wall, floor, or ceiling

· De-energize and verify before working on sy= stems >50V, or get and follow administrative and PPE provisions of electrical hot-work permit issued for that specific activity. (See http://www.sl= ac.stanford.edu/esh/forms/hotwork.pdf .)

Machine tools (drill presses, grinding wheels,= band saws) and their by-products (turnings).&= nbsp;

· &nbs= p; Eye injury from flying objects

· &nbs= p; Cuts, lacerations, abrasions, crushing, or amputation from body p= art caught in machine

· &nbs= p; Cuts from contact with sharp turnings

· &nbs= p; Injury from unexpected machine restart after power outage

· Use of machine tools allowed by only shop personnel or designees =

· Tools are used according to manufacturer’s requirements.

· Wear safety glasses while operating.

· Use point-of-operation guards on all tools.

· While operating, do not wear gloves or clothing that could be cau= ght in moving parts.

· Tools are on dead-man switches which prevent restarting after a p= ower outage.

· Clean up turnings immediately

· Dispose of waste promptly

Compressed “shop” air

· &nbs= p; Material blown into eye

· &nbs= p; Injection of air into bloodstream by deadending=

· &nbs= p; Wear safety eyewear with sideshields while using compressed air

· &nbs= p; All nozzle ported to prevent deadending

Walking and working surfaces, general: unsecured material, objects in path, tempo= rary storage, protruding objects, unexpected and changing working surface configurations =

· Slips, trips, and falls over fixed and temporary objects: support structures, containments, hoses, cords, cables, fixtures, tools, slings, = etc.

· Wearing open-toed shoes is not permitted in the IR hall

· Remove trip hazards to keep designated aisles clear.

· Clean up spills immediately.

· Walk with great care. Do not run.

· Keep eyes on path.

· Do not walk on loose objects.

Soldering

· Lead poisoning from exposure to lead in solder<= /p>

· Soldering has been review by IH as being low-hazard

· Waste is disposed of properly

GENERAL, Building-wi= de: