2012 Ocean Ranger Guidebook Revision 3-7-12 - Alaska ...

2012 Ocean Ranger Guidebook 3-7-12
collected and the discharges of the food waste / slurries need to be checked.
Citation: EPA VGP 2.2.15 Graywater
Excerpt: “If graywater will be discharged in waters subject to this permit, the introduction of kitchen
oils must be minimized to the graywater system. When cleaning dishes, you must remove as much
food and oil residue as practicable before rinsing dishes.”
Job Aid Item: 1.2.c
Text: Oils in Galley Waste Water stream (GW) are handled IAW (VGP 2.2.15)
Note: Most ships separate galley graywater from their AWTS. If the ship is a nondischarger, or
segregates galley GW and only discharges it outside permitted waters there is no need to check this.
What to check: Cooking oils not directly added to graywater system.
Background: This is to reduce grease/cooking oils that could foul the WW treatment system or
leave an oily sheen. Galleys and other areas of the vessels where food is processed or handled may
have installed grease separators / grease trap. Ocean Rangers should be familiar with these items.
Some vessels collect the spent oils from the galleys to use to “blend” (very small volumes of oils are
available for this) in their HFO for the main engines. Also some vessels have cooking oils collection
plans, the spent oils get off loaded for shore use, eg. Boiler fuel / bio diesel. This has occurred in the
last few years in Juneau.
Citation: EPA VGP 2.2.15 Graywater
Excerpt: “If graywater will be discharged in waters subject to this permit, the introduction of
kitchen oils must be minimized to the graywater system. When cleaning dishes, you must remove
as much food and oil residue as practicable before rinsing dishes. Oils used in cooking shall not be
added to the graywater system. Oil from the galley and scullery shall not be discharged in quantities
that may be harmful as defined in 40 CFR Part 110.”
Job Aid Item: 1.2.d
Text: Vessel’s chemically treated cooling water handling (e.g. anti freeze etc.) IAW (VGP 2.2.2)
Background: Most vessels have conditioned spaces for their equipment so anti freeze may not be used
in all the engines or in equipment cooling water systems. However, emergency diesels, life boat engines
may have antifreeze in systems. These systems are regularly changed and most vessels have collection
plans / recycling methods in place.
What to check: Toxic or hazardous substances added to or removed from cooling water are not allowed
to enter a water body. For example, to the bilgewater or wastewater systems for discharge overboard.
Citation: EPA VGP
1.2.3.8 Discharges of Noxious Liquid Substance Residues
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