Microbiologically Influenced Corrosion
(MIC)
NFPA 13 (2002), Section 14.2.2 requires
information on any MIC treatment plans to be submitted with the shop drawings
“where the Section 15.1.5 required water supply evaluation indicates treatment
is indicated”, but all this is contingent upon information from the owner to the
contractor required by Section 4.3(3) that the water supply is or is not in need
of treatment.
[It should be noted that the handbook alludes that the
owner’s certificate needs to ask the owner of any need for the water supply to
be treated, but the sample owner’s certificate in Figure A.14.1(b) does not even
suggest this…and the handbook indicates the owner’s certificate should accompany
preliminary (building permit) plans, but is not actually required anywhere nor
is this ever done since it is not ‘specifically required’ anywhere.]
The
‘requirement’ that the water supply be evaluated in order to require any
treatment plan to be ‘submitted’ for approval with the shop drawings just ends
up in a nice vicious indecisive logic loop that seems to effectively go
nowhere!
The owner claims they are ignorant of the requirement since
nobody tells them about it and they completed the duly required information
owner’s certificate ‘form’, the contractor says the owner never told them about
any needs, typically using the sample owner’s certificate in NFPA 13 (2002) as
the evidence they were not told, and the water supply is thereby never even
evaluated, nor is it treated, and fire safety typically suffers as the piping
may or may not deteriorate hydraulically and/or in oh so many other
ways.
The real question is – what was NFPA’s ‘intent’?
1) Was it
to purposefully put the alleged ‘requirement’ for water supply testing/treatment
into the main body, but weaken it to the point that it could’ve effectively just
been left out of the standard for all the good it does trying to enforce any of
it; or
2) Was the intent to require shop drawings provide information
that the water supply was evaluated and the information from that evaluation
included with the shop drawings thus justifying that treatment information
required by Section 14.2.2 is not required?
Answer 1 means 'pass the
buck' to the victim...the public who only has the visual illusion of fire
protection of the system that may or may not actually work as designed by the
alleged 'conscientious contractor' as required by the 'responsible owner', and
the conceptual illusion that the 'authorities' are verifying system
integrity.
Answer 2 means shop drawings must either include test reports
indicating no MIC is present, or submit test reports indicating presence of MIC
including its intended treatment for review and approval.