MSD regulations can be found at 33 CFR 159 or
<http://www.gpo.gov/fdsys/pkg/CFR-2012-title33-vol2/xml/CFR-2012-title33-vol2-part159.xml>
You can get all involved in the reading and interpretation but let me boil it
down for many of us.
If you have a boat with a pumping head and a discharge through the hull, you
can satisfy the regulation by installing a holding tank and securing the
discharge valve in the closed position. The regulations allow you a) remove
the valve handle, b) padlock the handle or c) secure the handle with a
non-releasable wire-tie.
I was a regulatory manager in chemical plants for 30 years. We routinely used
LOTO (lock out, tag out) devices to secure valves.
Touche' has a 1 1/2 inch ball valve for the head discharge. When in no
discharge zones, I secure it with an industrial valve LOTO device.
Specifically, a North Safety BS02. I got mine on eBay for about $15. Although
you can find them for about $25-28 online, Staples sells them for $32:
<http://www.staples.com/North-BS02-B-Safe-Ball-Valve-Lockout-1-1-2-inch-2/product_197490>
If you have a globe or gate valve with a round handle, there are LOTO devices
available. Again, North Safety's v-safe series might work for you. Staples
also sells these: <http://www.staples.com/v+safe/directory_v-safe>
One of these LOTO devices and a padlock will make your boat legal.
Dennis C.
Touche' 35-1 #83
Mandeville, LA
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