NHP Machine Guarding - Initial Assessment

Information

Fixed Guarding

Is there ANY ACCESS to moving parts or dangerous conditions, during normal or abnormal operations?
Are fixed guards robust, securely anchored with fasteners that require the use of tools to remove?
Are all parts (Drives, chains, gears, shafts, etc.) adequately covered by a guard?

Are movable guards protected with the safety rated interlocks?
Do pneumatic and hydraulic systems have auto dump valves to release residual energies when interlocks are broken?
Are there any obvious single points of failure of the safety system (I.e. -1 mechanical interlock switch on a guard door, 1 Air valve, etc.)?
Does the safety system appear to be the appropriate CATEGORY for the equipment and it's hazards?

Are presence-sensing devices the correct type for the application (I.e. light curtains instead of photo eyes, etc.)
Are presence-sensing devices properly positioned (I.e. height of light curtains, distance to hazards/stopping distance, low visibility such as hoist cavities, etc.)?
Are presence sensing devices that have a defined function (I.e. muting lit curtain, laser scanning suspension, etc.) controlled by safety rated devices.

Does the suspension of safeguards have a mode selection device (I.e a keyed jog switch, etc.) incorporated to prevent automatic or inadvertent start up?
Do jog controllers require the use of two-hands and have a local e-stop button?
Do the jog controls allow the user to see the entire work space? If not, does the jog function allow only one door open in the immediate area?
Does the equipment display audio and visual alarms prior to machine jog movement?
When in jog mode, does the equipment operate at a reduced speed significantly less than operations speed?

Does the equipment have an appropriate number of e-stop buttons, located in proximity to work and/or hazard areas?
Are e-stops clearly identifiable (yellow background, red head) clearly visible, and quickly accessible control devices?
Does the e-stop function as an emergency stopping device regardless of operating mode?
Do e-stops have LOTO hasps?
Are they used to perform LOTO?

A reset of the machine is required at a control panel upon returning from power failure, safety circuit interruption, or triggering an e-stop?
Does the equipment require reset of the safety system to be local and can visual verification be performed prior to resetting safety function?
Are upstream/downstream equipment controls integrated with the equipments safety system and will shutdown upon triggering an e-stop and/or safeguard failure?

Do all energy sources for the equipment have local, lockable isolation devices (I.e. disconnects, self-bleeding air valves, etc.)
Does the equipment have a formally documented Energy Control Procedure and is it posted near the machine or does the operator know where to locate it?
Are all energy isolation devices located outside of machine guards and access is free of hazards?
Do all pneumatic systems have over-pressure protection (I.e. regulator, pressure-relief valve, etc.) and dissipate residual air when close?

Hazard warning labels or symbols are present (in the form of symbols or pictograms, or written in native language) on the equipment and its associated safeguards?
Are control devices clearly identified on a drawing or pictogram located on the equipment to reference the location of critical safety controls to operators?