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WorksheetsPlant Operation Chapter 7
Total questions: 10
Worksheet time: 20mins
Select two (2) situation required a shutdown activity in process plant.
Major equipment problems
Business downturn
Touch up painting
Sampling and sample analysis
Select two (2) main reasons accident and injury occur during shutdown process
Production exceeds product sales
the increased potential for chemical exposure
the less of work being done
time pressure created by these situations
Select the alternative action to be taken when hazards cannot be eliminated during the shutdown activities
Procedures must be created, to include hazard avoidance or hazard prevention in existing procedures
The operators and technicians are sent to other division
Reduces the production off-specification product
Reported to the lead technician or the shift supervisor
Select two (2) hazards of unit shut down
Mixing of air and hydrocarbon to form explosive mixture
High temperature
Inadequate lighting
Thunderstorms
Select the correct activities in preparation phase for unit shut down
Management determines what repair work and upgrades are to be done
Unit feed and temperatures are slowly decreased to prevent damage from thermal shock
After all hydrocarbons have been pumped out or drained from piping and vessels, purge with an inert gas
Insert blinds, aerate and use gas detectors to check the lower explosive limits (LEL)
Select the correct activities in shutdown phase for unit shut down
Unit vessels and piping are deinventoried as much as possible to recover all unit hydrocarbons
Engineering planning, diagrams and so on are completed on repair and project work for the turnaround
Prepare shutdown procedures, blind lists and check off lists are verified as up to date
Logistics of materials, supplies, and tools needed for shutdown are determined
Select two (2) the materials that will be eliminating due to purging process
Flammable material
Toxic material
Infectious material
Non toxic material
Select two (2) benefits of using steam as inert gas while purging process
Removal of air
Evaporation of water trapped in equipment
Vapourizing heavy liquids
Environmentally benign
(a) are metal plates that completely block flow in piping and vessels
Select the correct purpose to prepare blind list.
To ensure all required blinds have been installed before anyone enters equipment
To protect personnel and equipment from explosions and fires
To protect all sorts of equipment from the effects of water and sun.
To control the purchasing of products and services from external suppliers
