Font size
WorksheetsPOM: Permit System
Total questions: 20
Worksheet time: 11mins
PTW is a special ______________ used before certain types of work that involved with hazardous in workplace can be done.
document
tools
equipment
PPE
All activities below was consider as non-routine activities at petrochemical process plant EXCEPT.
Hot-work
Cold-work
Electrical work
Confine space entry
Plant operation
Base on picture below, select all activities in workplace required PTW approval before start the work.
Select all related function of PTW used in process plant industry.
Provide guidance in confirming completion of the work activities.
Provide guidance in confirming all hazard s involve during work activities
Provide guidance in confirming precaution to be taken during execution of the work.
Provide guidance in confirming coordination of all activities to provide a safe working environment.
All task below is related to process technician responsibility, EXCEPT.
Inspects area and ensures housekeeping.
Isolates all equipment before do maintenance.
Apply LOTO
Fill out PTW
Perform gas test
From picture below, which picture show the fire watcher was assign during execution of non-routine work at workplace.
When hot work permit required in work place?
Work with equipment produce a source of ignition.
Work area have flammable material that can't be removed
The work area atmosphere have possibility of flammable gas presence.
All answer correct
All tips below is a good practices before performing hot work, EXCEPT.
Make sure that all equipment is in good operating order before work starts.
Move all flammable and combustible materials away from the work area.
Remove any spilled grease, oil, or other combustible liquid.
Make sure that the first-aid boxes are available and easily accessible.
If possible, schedule hot work during plant operation periods.
Following statement about LOTO was TRUE, EXCEPT;
i. Prevent from unexpected start-up of machine during maintenance.
ii. Prevent from unexpected release of hazardous energy maintenance.
iii. PTW application submit after LOTO isolation work.
iv. De-isolation work was perform after 'hand-back after work' complete.
v. Physical isolation was perform before electrical isolation activity.
i and ii
iii and ii
iii and v
i and v
Isolation of power supply at substation can be perform after application of PTW.
True
False
LOTO is not necessary when maintenance activities only take few minutes to complete.
True
False
Electrical isolation at field was perform after physical isolation activities complete.
True
False
Which of the following picture show people working at confine space environment?
Select all related hazard can be presence in confined space.
Low/high concentration of oxygen
Snake
Claustrophobia
Fall
What is LEL for explosive gas?
5%
10%
19.5%
23.5%
What is the meaning of LEL in gas test reading?
Lower Explosive Limit
Lower Expansion Limit
Lost Energy Limit
Less Explosive Liquid
What is the meaning of PEL in gas test reading?
Permanent Exposure Limit
Permissible Exposure Limit
Particle Exposure Limit
Permissible Explosive Limit
How many compulsory step has been listed by DOSH for confined space entry procedure?
5
6
8
10
What is the step should be done by AE and SP after initial cleaning activity complete?
Pre-entry Testing
Initial Ventilation
Issuance of PTW
Entry and Work
Authorised Entrance can go into confined space during initial cleaning to ensure the area is safe to work.
Can Enter
Can Not Enter
Can enter Only after got approval from Entry Supervisor
Can enter Only after got approval from Standby Person
