spectrometer solenoid test plan workshop: safety considerations steve virostek - lbnl february 17,...

Spectrometer Solenoid Spectrometer Solenoid Test Plan Workshop: Test Plan Workshop:

Safety ConsiderationsSafety Considerations

Steve Virostek - LBNLSteve Virostek - LBNL

February 17, 2012

LBNL

Spectrometer Solenoid Test Plan Workshop - 2/17/2012

- 2 -Safety Considerations Steve Virostek LBNL

TopicsTopics

• Overall safety schemeOverall safety scheme• Specific Wang NMR issuesSpecific Wang NMR issues• Personnel requirementsPersonnel requirements• Specific topics related to magnet testingSpecific topics related to magnet testing

Liquid cryogensLiquid cryogens High magnetic fieldsHigh magnetic fields Pressurized gasPressurized gas Electrical hazardsElectrical hazards

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Overall SchemeOverall Scheme

• We face unique safety concerns with many We face unique safety concerns with many people from various institutions working at a people from various institutions working at a private companyprivate company• Personnel working at Wang NMR must adhere Personnel working at Wang NMR must adhere

to safety rules of their home institutionsto safety rules of their home institutions• Individuals are to only to perform tasks for Individuals are to only to perform tasks for

which they have specific trainingwhich they have specific training• Everyone is responsible for identifying and Everyone is responsible for identifying and

helping to mitigate sfaety issueshelping to mitigate sfaety issues

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Safety at Wang NMRSafety at Wang NMR

• Wang NMR follows safety procedures that are Wang NMR follows safety procedures that are generally less stringent than national labsgenerally less stringent than national labs• We must not relax our own requirements simply We must not relax our own requirements simply

because we are off sitebecause we are off site• Some of the equipment at Wang NMR may not Some of the equipment at Wang NMR may not

meet our standards and should be considered meet our standards and should be considered carefully before usingcarefully before using• Wang NMR personnel are adequately trained for Wang NMR personnel are adequately trained for

certain tasks and should be utilized as neededcertain tasks and should be utilized as needed

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Personnel RequirementsPersonnel Requirements

• Bert Wang is ultimately in charge of his facility Bert Wang is ultimately in charge of his facility and should approve of all operations and should approve of all operations • Individuals working at Wang NMR must have Individuals working at Wang NMR must have

appropriate safety training for any hazardous appropriate safety training for any hazardous tasks they will carry outtasks they will carry out• For off-hour operations, at least two people For off-hour operations, at least two people

must be present at all timesmust be present at all times

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Liquid CryogensLiquid Cryogens

• Large quantities of LN and LHe will be used Large quantities of LN and LHe will be used during magnet cooldown and trainingduring magnet cooldown and training• Anyone working with cryogens must have the Anyone working with cryogens must have the

appropriate trainingappropriate training

• Minimum PPE: safety Minimum PPE: safety glasses w/side shields, glasses w/side shields, insulated glovesinsulated gloves• May involve working at May involve working at

heights (transfer line)heights (transfer line)

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Magnetic FieldsMagnetic Fields

• High magnetic fields will be present near the High magnetic fields will be present near the magnet during training (3 to 4 Tesla in bore)magnet during training (3 to 4 Tesla in bore)• A safety zone will be marked out around the A safety zone will be marked out around the

magnet testing areamagnet testing area• A sweep of the safety zone for magnetic tools A sweep of the safety zone for magnetic tools

will be conducted before energizing the magnetwill be conducted before energizing the magnet• Common items may be sensitive to magnetic Common items may be sensitive to magnetic

fields: credit cards, phones, watches etc.fields: credit cards, phones, watches etc.• Pacemakers are sensitive to low fieldsPacemakers are sensitive to low fields

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Pressurized GasPressurized Gas• Pressurized gas may be present due to Pressurized gas may be present due to

vaporizing cryogensvaporizing cryogens• Pressure relief devices are present on both the Pressure relief devices are present on both the

cold mass and vacuum vesselcold mass and vacuum vessel

• Escaping helium at Escaping helium at high velocity, low high velocity, low temperature may temperature may pose a hazard pose a hazard during a quenchduring a quench

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Electrical HazardsElectrical Hazards

• Power supply rack being used Power supply rack being used will have open sideswill have open sides• Connections between power Connections between power

supplies and magnet should be supplies and magnet should be made by qualified personnel made by qualified personnel • Cryocooler compressors operate Cryocooler compressors operate

at high voltage (460 V) and at high voltage (460 V) and power (11 kW)power (11 kW)

spectrometer solenoid test plan workshop: safety considerations steve virostek - lbnl february 17,...

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