IM-P713-01 CTLS Issue 1
6
AEL7 Series Electric actuator
1.6 Hazardous liquids or gases in the pipeline
Consider what is in the pipeline or what may have been in the pipeline at some previous time.
Consider: flammable materials, substances hazardous to health, extremes of temperature.
1.7 Hazardous environment around the product
Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases, extremes of
temperature, hot surfaces, fire hazard (e.g. during welding), excessive noise, moving machinery.
1.8 The system
Consider the effect on the complete system of the work proposed. Will any proposed action (e.g.
closing isolation valves, electrical isolation) put any other part of the system or any personnel at
risk? Dangers might include isolation of vents or protective devices or the rendering ineffective
of controls or alarms. Ensure isolation valves are turned on and off in a gradual way to avoid system
shocks.
1.9 Pressure systems
Ensure that any pressure is isolated and safely vented to atmospheric pressure. Consider double
isolation (double block and bleed) and the locking or labelling of closed valves. Do not assume
that the system has depressurised even when the pressure gauge indicates zero.
1.10 Responsibilities of the operator and operating (including
maintenance) personnel
The operator is responsible for ensuring that safe systems of operation and practice are
implemented and maintained. Only competent persons must be allowed to be able to operate and
maintain these devices, and these persons must be familiar with, and comply with the applicable
health and safety standards or guidelines.
The installation and maintenance instructions should form part of the standard operating
procedures for maintenance and must therefore be kept in an accessible location and in a legible
condition.
Product identification and safety related labels must also be kept in a clean and legible condition.
Identification and safety labels must be replaced if they become damaged or obscured in operation.
1.11 Temperature
Allow time for temperature to normalise after isolation to avoid danger of burns.
The actuator must not be insulated. When coupled to a valve operating on high temperature media,
if there is a risk of burning through handling (intentional or accidental), it is recommended that
suitable methods of prevention are implemented e.g. machine or a visual warning.
1.12 Tools and consumables
Before starting work ensure that you have suitable tools and/or consumables available. Use only
genuine Spirax Sarco replacement parts.
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