Alfa Laval Spiral Heat Exchanger SHE Cond 4L

Examine channels for the following issues

Is an optical device needed for inspection due to large channel width and small spacings?

Is there any massive corrosion or erosion evident?

Is mechanical damage suspected?

Describe any detected issues or observations

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

Verify cover placement and orientation

Ensure gasket material and thickness

Place gasket and cover in position

Apply and finger-tighten hookbolts

Tighten hookbolts diagonally using recommended torque

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

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

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

Drain, flush with water or proper cleaning agent, and redrain if returning to manufacturer

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

Drain procedures based on SHE type and orientation

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

If testing one side, ensure the exposed face of the SHE body is held down by a rigid beam or other device

Verify that the beam is held down by the hookbolts with a weld bead as shown in the diagram

Ensure maximum test pressure is 1.5 times the maximum allowable working pressure (MAWP)

Consult Alfa Laval if hydrostatic testing is not practical and air testing is considered

Ensure unit safety before opening

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