Spirax Sarco SGC40, Installation And Maintenance Instructions Manual

IM-P130-29 

 CMGT Issue 7

5

1.2 Access

Ensure safe access and if necessary a safe working platform (suitably guarded) 

before attempting to work on the product. Arrange suitable lifting gear if required.

1.3 Lighting

Ensure adequate lighting, particularly where detailed or intricate work is required.

1.4 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.

1.5 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.

1.6 Isolation

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.

1.7 Pressure 

Before attempting any maintenance consider what is or may have been in the 

pipeline. Ensure that any pressure is isolated and safely vented to atmospheric 

pressure before attempting to maintain the product, this is easily achieved by 

fitting Spirax Sarco depressurisation valves type DV (see separate literature for 

details) and consider double isolation (double block and bleed) and the locking or 

labelling of closed valves. Do not assume that the system is depressurised even 

when a pressure gauge indicates zero.

1.8 Temperature

Allow time for temperature to normalise after isolation to avoid the danger of burns 

and consider whether protective clothing (including safety glasses) is required.

1.9 Tools and consumables

Before starting work ensure that you have suitable tools and/or consumables available. 

Use only genuine Spirax Sarco replacement parts.

1.10 Protective clothing

Consider whether you and/or others in the vicinity require any protective clothing 

to protect against the hazards of, for example, chemicals, high / low  temperature, 

radiation, noise, falling objects, and dangers to eyes and face.