Alfa Laval Spiral Heat Exchanger SHE Cond 1S

Ensure the following before opening a Type I or III unit

Disassemble hookbolts and remove covers

Dismantle the flanged joint for the cooling water outlet on Type IIIV upper cover

Check for damage when removing residual gasket material

Securely hold the unit in place to prevent swinging

Securely fasten hinged covers at piping connections and mounting brackets before opening

Ensure complete reassembly of the SHE before testing

Decide if testing one side of the unit before assembling the cover(s) on the other side is desired

Secure the exposed face of the SHE body with a rigid beam or other device if testing one side

Verify that the beam is held down by the hookbolts with a weld bead

Determine the maximum test pressure (1.5 times MAWP)

Confirm that hydrostatic testing is practical

Consult Alfa Laval if air testing is considered due to impracticality of hydrostatic testing

Examine channels for the following issues

Is an optical device needed for inspection?

Is there any massive corrosion or erosion evident?

Is there any mechanical damage suspected?

Describe any detected issues in detail

Contact Alfa Laval for advice if massive corrosion, erosion, or mechanical damage is detected

Verify cover placement and orientation

Ensure gasket and cover compatibility

Select appropriate gasket material

Apply hookbolts and finger-tighten

Tighten hookbolts diagonally using recommended torque

Enter the actual working pressure

Calculate torque using formula: Torque @ 125 psig x (Actual Work Pressure / 125 PSIG)

Ensure proper shut-down sequence

Is the working fluid pipework system arranged for continuous venting?

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

Is the unit to be returned to the manufacturer for inspection, cleaning, or repair?

Prepare unit for return to manufacturer

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

Drain procedures based on SHE type