Page 7 - Temporary Instrumentation and Controls Bypass - CCPS Safe Work Practice

Potential Hazardous Consequences

Personnel Injury

Bypassing or jumpering an instrument or control device, if not done properly, can lead to a release of hazardous
materials and personnel exposure with serious injuries or fatalities.
g Exposure to corrosive materials (i.e., acids or caustic) causing chemical burns
g Exposure to toxic materials (i.e., benzene, hydrogen sulfide, phenol)
g Exposure to hot materials (i.e., steam) causing thermal burns

g Release of material under pressure causing an injury

Property Damage From Fire or Explosion
A release of hazardous material resulting from bypassing, impairing, or jumpering an instrument or control device can
cause property damage if released materials are flammable. Depending on the surrounding area, the released material
may find an ignition source and cause a fire or an explosion.

Chemical Release and Environmental Impact: On-Site or Off-Site
In addition to the property damage and personal injury consequences stated above, facilities must also consider the
potential for environmental damage that could result from bypassing instrumentation or controls.
g Environmental damage due to releases to the air, soil, or bodies of water resulting from hazardous material releases

SAFE WORK PRACTICE, TEMPORARY INSTRUMENTATION AND CONTROLS BYPASS 4