Why does the pump gland admit water? (5 Points)

• Prime the pump

• To control pump delivery pressure

• To manage the leakage rate

• To cool and lubricate the packing

What is the purpose of a lantern ring? (5 Points)

• Prevent all leakages

• To contribute to lubrication and cooling

• Manage leaks

• None of the above

Which component/part applies the load to the packing? (5 Points)

• Gland follower

• Bonnet

• Body

• Actuator

When the pump is stationary the closing pressure in a mechanical seal is applied to the primary seal by the? (5 Points)

• Tertiary seal

• Drive dimple

• Grub screws

• Springs

What would be the consequences of fitting a mechanical seal to an unsuitable machine?

• Use more mechanical seals

• Increased stock levels of mechanical seals in stores

• None as all machines are suited for mechanical seals

• Shortened mechanical seal life and excessive leakage

Pump gland adjustment should be done? (5 Points)

• With the machine reinstalled and isolated

• Before leaving the workshop

• Immediately after packing the gland

• Whilst the pump is running

The main hazard when adjusting a pump gland is? (5 Points)

• The leaking gland

• Chemical leaking from gland cooling

• The rotating shaft and keyway

• Access and visibility

What type of packing material is predominantly used in pumps?

• Rubber

• PTFE (Teflon)/Graphite filaments

• Glass

• Metal

When fitting packing rings what angle should the joins be fitted at with reference to the previous ring?

• 45 degree angle

• 180 degree angle

• 90 degree angle

• 120 degree angle

Which of the ones below is not a primary element of a mechanical seal?

• Spring

• Seal seat

• Impeller

• Seal face drive