8/10/2019 Clean_Design_Standard_for_Utility_Modules.pdf

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CLEAN DESIGN STANDARD FOR UTILITY MODULES

Page 1 of 2 Modular System Clean Design Standards 12/19/2014

This standard provides practices that help assure the module is easy to operate and maintain. In general, theyreflect common sense and good engineering and design practices.

GENERAL DESIGN FEATURES

Eliminate unnecessary parts. Use the minimum number of components to achieve function Minimize painted surfaces Use the smoothest, cost justified surface finish Do not use control systems to compensate for inadequate mechanical design

SAFETY

All equipment fails safe on loss of utilities Visible lockouts prevent all possible equipment operation Minimize operator bending, stretching and reaching for routine operation, adjustment and maintenance Do not use guards inside of guards unless necessary for equipment protection or elimination of

contamination.

CLEANLINESS

Fill and flush all equipment surface crevices Fill and flush all holes and openings Minimize the number of angles that are less than or equal to 90 degrees Radius fill 90 degrees angles Minimize the total area of equipment contact with floor Eliminate points of contamination buildup on all equipment-to-floor contact points Minimize ladders, rails and platforms Route cable, conduit and piping to permit easy cleaning Do not use channels for equipment frames Use round tubing, instead of non-round shapes Provide a C-I-L standard which maintains the ideal condition with minimum time and effort Locate equipment subassemblies to prevent spread of contamination Eliminate all inaccessible areas created by equipment-to-equipment contact Provide easy-to-clean tools as needed

VISUAL CONTROL/INSPECTION

Provide easy access to all sections of module Install visible control (label, tag, materials, process range.) Visually indicate normal operating range on all instrumentation displays Show the direction of rotation on all drives Show the direction of travel of all belts/chains Identify chain or belt model type at point of service

Clearly mark all control devices for intended function Show flow arrows on all piping and tubing Ensure internal equipment components can be visually inspected

LUBRICATION

Ensure lubrication points are easily accessible and clearly identified Mark lubricant type and quantity at all lubrication points Minimize the number of lubricants

8/10/2019 Clean_Design_Standard_for_Utility_Modules.pdf

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CLEAN DESIGN STANDARD FOR UTILITY MODULES

Page 2 of 2 Modular System Clean Design Standards 12/19/2014

FASTENING

Minimize the number of fastener types Show critical fastening torque specifications Provide anti-loosening fastener measures where required Thread bolts directly into equipment to minimize the use of bolt-nut pairs

QUALITY

Design equipment settings to be easily established Assure equipment settings do not change/drift Make adjustment points visible and lockable

MAINTAINABILITY

Minimize the number of tools required for maintenance Minimize the need for special tools Make covers and guards easy to handle Enable routine maintenance without equipment disassembly Provide easy accessibility to all equipment Minimize space required for access to equipment (width 0.8m) Ensure the skid base is designed per clean standards (skid structure poured into concrete or structure

lifted up on legs with easy access for cleaning)