1 Safety
1.2.2.4. Safety risks related to pneumatic/hydraulic systems
21
3HAC026876-001 Revision: F
© Copyri
ght
200
7-2010 ABB.
All rights reserved.
1.2.2.4. Safety risks related to pneumatic/hydraulic systems
General
Special safety regulations apply to pneumatic and hydraulic systems.
Residual energy
•
Residual energy can be present in these systems. After shutdown, particular care must
be taken.
•
The pressure in pneumatic and hydraulic systems must be released before starting to
repair them.
Safe design
•
Gravity may cause any parts or objects held by these systems to drop.
•
Dump valves should be used in case of emergency.
•
Shot bolts should be used to prevent tools, etc., from falling due to gravity.