Alfa Laval Spiral Heat Exchanger SHE Cond 60L

Retighten hookbolt assemblies in a diagonally opposite sequence

Is the cooler media admitted to the SHE first?

Is the fluid nearest ambient temperature admitted first if media are below ambient temperature?

Start pumps against closed valves

Are valves opened slowly to avoid hydraulic shock?

Is all pipework and the SHE filled before opening the valves fully?

Ensure proper circulation and shut-down procedures

Is the working fluid pipework system arranged for continuous venting?

Determine the action based on shut-down period and risk assessment

Ensure SHE is shut down and isolated from process and service streams before draining

Drain procedures based on SHE type

Ensure unit safety before opening

Disassemble hookbolts and remove covers

Dismantle flanged joint for cooling water outlet on Type IIIV

Check for damage when removing gaskets

Secure unit to prevent swinging if mounted on trunnions

Fasten hinged covers at piping connections and mounting brackets before opening

Ensure compatibility of cleaning agents with materials of construction

Use proprietary cleaning agents according to manufacturers' instructions

Flush the unit completely of all cleaning agents

Drain the unit if not put back into operation immediately

Ensure all parts are in place before testing

Secure the exposed face of the SHE body with a rigid beam or device

Enter the hydrostatic pressure applied during the test

Is the test pressure within 1.5 times the MAWP?

Check for any distortion or damage to the SHE body after testing

Was air testing consulted with Alfa Laval if hydrostatic testing was not practical?