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Program Sponsored by: CNO N45 PPEP
Content
by: NAWC Lakehurst
and NFESC
PREPRODUCTION
INITIATIVE-NELP
AQUEOUS PARTS WASHER
(SMALL)
COST ANALYSIS
PROTOTYPE SITE: NS Mayport
DESCRIPTION: Cleans parts using a biodegradable aqueous
solution in a closed-loop system with spray nozzles located
along the interior walls and ceiling to direct the cleaning
solution. High temperatures and blasting pressure combine
to remove dirt and grease from parts without the use of
1,1,1trichloroethane or other ozone-depleting cleaning
solvents.
DATA COLLECTION PERIOD: July 1995 - February 1996
COST SAVINGS: The site previously used a Safety Kleen
immersion tank for parts washing, which required hand brushing
and soaking parts in solvent. The waste solvent is disposed
of as hazardous waste under contract with Safety Kleen,
which provides a service schedule for the collection and
disposal of waste solvent. Many other sites use a P-D-680
dip tank; therefore, a cost comparison is provided for
this method as well.
PREVIOUS METHOD: Safety Kleen Tank
The service schedule specified for the Safety Kleen Model
34 parts cleaner is 4 weeks, at a rental cost of$144.37
per month. A service representative drains the spent Safety
Kleen solvent, refills with fresh solvent, and disposes
of the used solvent. Model 34 has a 30-gallon tank capacity.
The site has stated that cleaning parts using the Safety
Kleen system takes approximately the same amount of time
as the aqueous parts washer. However, the operator can
perform other tasks while parts are being cleaned in the
aqueou sparts washer, which is not possible with the Safety
Kleen tank.
Service
Cost per month: $144.37
Cost per year: $1,732.44
Labor
E-3 labor rate per hour: $10.39
Time per part: 20 minutes
Throughput per week:
50 parts
Throughput per year:
2,600 parts
Cost per year: $9,004.67
Waste Disposal
Thirty (30) gallons of waste are generated per month.
Waste disposal costs are included in the Safety Kleen contract
for a monthly service fee of $144.37 per Safety Kleen unit.
Total Annual Costs
Item Cost
Service $1,732.44
Labor 9,004.67
Waste Disposal N/A
Total $10,737.11
http://www.p2pays.org/ref/01/Library%20Elements/PPEP/Prepro/Ca/17.pdf |
Specializing in parts washers, parts cleaning, ultrasonic cleaning, degreasers, conveyor washers and belt washers.
