INGENIEUR
INGENIEUR
Reference from DOSH HIRARC - Hierarchy of control Sample CSE Manhole
Elimination
Substitution
Engineering Control
Administrative Control
Personal Protective Equipment ( PPE )
Factories and Machinery ( Safety , Health & Welfare ) Regulations 1970 ( Revised – 1983 ) Section13 : Manhole may be rectangular , oval or circular in shape , and shall not be less than sixteen inches wide or not less than eighteen inches in diameter if circular .
Area of Consideration |
Bow-tie Analysis |
Area of Consideration |
|
EQUIPMENT
PROCESS
|
Preventive Measures |
Mitigation of Incident |
EQUIPMENT
PROCESS
|
PEOPLE |
|
|
PEOPLE |
CSE Safety Incident Occur |
in m 3 / hr . Alternatively , sum up all the available Blower ( m 3 / hr ) and ensure the value exceed 30 V g ) Manhole ( 4 ) can be used for CSE provided the size is sufficient , and other Controls has been established ( Administrative Controls and PPE ).
Notes : i . The quality of air intake is another essential aspect to consider , hence air intake blower should be located at strategic location to avoid contaminated air from entering ( e . g . hydrocarbon release , engine exhaust , abrasive blasting , spray painting , etc .).
Stop work whenever necessary and resume when safe . ii . Some facilities are equipped with Ultrasonic Gas Detector which can be sensitive towards nearby air blower vibration and may trigger operational shutdown . Therefore , these detectors may need to be temporarily by-passed . iii . Unlike Onshore Industry , “ Offshore Self- Regulation Management System , OSR- MS ” manages and sustains safe operation at offshore facilities with consensus from DOSH , including Pressure Vessel repair , except for pipeline associated facilities . Meaning Offshore Pressure Vessel Repair
58 VOL 96 OCTOBER-DECEMBER 2023