Scenario > Fire caused due to leakage from a control valve flange, which became loose due to vibration at a catalytic reforming unit

01.

Poor Value Perception

02.

Poor Safety Awareness

03.

Insufficient Safety Measure

04.

Carelessness

05.

Insufficient Precaution

06.

Inadequate Handling

07.

Usage

08.

Maintenance/Repair

09.

Hot-bolting

10.

Bad Event

11.

Mechanical Event

12.

Loosend by Vibration

13.

Secondary Damage

14.

External Damage

15.

Fire

Fire caused due to leakage from a control valve flange, which became loose due to vibration at a catalytic reforming unit

	Knowledge Comment:
	The management of hot-bolting should be executed according to the rule.

Field	Chemicals and Plants
Author	OGAWA, Terushige (Graduate School of Environment and Information Sciences, Yokohama National University) TAMURA, Masamitsu (Center for Risk Management and Safety Sciences, Yokohama National University)