Clean all blackwater pipes in the head

[smr547]

• Remove blackwater pipes
• crack all calcium from pipes
• or replace pipes
• Reinstall

Major working bee task

[smr547]

Minimum calcium was found in the STB aft heads pipe from bowl to black water tanks. It was decided that cleaning with vinegar would suffice It was impossible to remove the large pipe from the blackwater tank to the seacock -- the pipe seems to be built in

no further action