As noted by the Transportation Association of
Canada, successfully salt reduction strategy requires
changes in procedures, practices, equipment, and acceptance
of new approaches by managers, supervisors, and operators.
For this reason, effective training programs must demonstrate
the value of new procedures and ensure that personnel
are competent in delivering the new program. This can
be a significant shift for long-time winter snow and
ice control operators, where the past standard of a
job well done has been to see how much salt they can
put down during their shift: "More is Better" or "When
In Doubt – Put It Out."
Over applying sand and salt is as much a decision-making
problem as it is a technical one; plow operators can
make good decisions with old equipment and they can
make terrible decisions with state-of-the art equipment.[N]
If an operator is using too much sand and salt, saving
salt should be as simple as dialing in a lower application
rate. To counteract the pressure to overuse salt, it
is necessary to provide plow operators with the skills
and tools to make good application rate decisions including
standard application rate guidelines, based on pavement
temperature, calibration, and equipping the plow trucks
with infrared pavement sensors or some other means
of accessing real-time pavement temperatures may enable
the operators to follow these guidelines. Organizing
five minute meetings and discussing application rates
before and after snow and ice events may give operators
the chance to learn about application rates from each
other.[N]
MnDOT developed a performance-based program for reducing
application rates called "Salt Solutions" that
provided operators with tools and systems for making
better application rate decisions. Application rates
dropped when the entire organization actively supported
the operators in making better decisions and the agency
took the time to measure and reward improved performance.[N]
As the Transportation Association of Canada notes,
traditionally, equipment-related training focused on
equipment maintenance and the safe operation of the
vehicle and a plow operator could be forgiven for only
plowing, just as a spreader operator might only spread.
As equipment evolved, so did specific training on the
differences between vehicles, which covered the spreader
controller features and how to change settings, etc.
These aspects of staff training are still essential
to the safe and effective use of equipment. Further
equipment-related training, however, should emphasize
the impact of the operator's decisions made along the
route, the range of settings and methodologies available
to the operator, and tie these to her/his roles as
a "snow and ice controller" and "decision-maker." Equipment
training is integral with other winter maintenance
topics such as the science of salt and record keeping.
With today's understanding of best practices for snow
and ice control and with the more sophisticated equipment
that is available, operators need to understand that "decision-making" means
choosing to spread when appropriate, and – equally
important – choosing not to spread when it is
not required. It is important to choose to plow the
accumulated snow and slush, and important to not prematurely
plow salt-laden slush before the salt has done its
job. To ensure operators are confident in their duties
and in using the assigned equipment, operators should
have training in such equipment-related topics as:
[N]
- Route familiarization (preferably during daylight).
- Pre-season driver training.
- Spreader calibration.
- "circle-check" procedures.
- Spreader controller operation.
- Brine equipment operation.
- Equipment washing procedures.
- Minor equipment repair.
- Good housekeeping practices.
- Record keeping.
- Use and interpretation of pavement sensor data
and forecasts.
- Infrared thermometer use.
- Agency policies.
The following equipment-related learning goals should
be included in a training program:
- Understand the concept of putting out the right
material, in the right amount, at the right time,
and leaving it there long enough to do the job.
- Understand how the electronic controller and gate
settings on each spreader must be set to achieve the
specified application rate.
- Understand how to calibrate each spreader to ensure
that the right amount of material is being spread.
- Understand how to recognize when re-calibration
is necessary.
- Understand the importance of timely plowing.
- Understand how to efficiently plow each beat/route.
- Understand the role and effective placement of
snowdrift control devices (structural snow fences,
snow ridging, agricultural stubble, living snow fences).
- Understand how to fill spreaders and anti-icing
units with liquid chemicals.
- Understand the health, safety and environmental
precautions that need to be taken when handling liquid
chemicals.
- Understand how to measure brine concentrations.
- Understand the components and purpose of RWIS installations.
- Understand how to properly mount a truck-mounted
IRT so as to ensure accurate readings.
- Understand that IRTs are for measuring temperature
trends not exact temperatures.
- Understand precautions about handling and using
IRTs.
- Understand the importance of proper record keeping
and how to complete the required documentation on
equipment maintenance and salt use.
Training will necessarily include such on-the-job
elements as preseason "dry runs." Drainage
facilities, wildlife crossing structures and other
facilities requiring delineation or special treatment
in plowing operations should be noted by foremen and
equipment operators during dry runs of routes in the
fall along with possible obstructions.
It is not likely that all staff will need the same
level of training. The amount of training and the level
of detail of training that is required by specific
personnel will vary. For example, managers may not
need to know how to calibrate a spreader or to plow
a road in order to carry out their responsibilities.
They should however understand the importance of an
effective calibration program and what equipment is
needed to optimize salt use.
Operators that do not make salt application decisions
may not have to understand much about the decision
support systems. However, they need to understand salt
application policies, the chemistry and application
of salt, the environmental issues, good housekeeping
practices at maintenance yards, record keeping, equipment
operation and relevant decision-support information.
Training needs vary among employees. New staff will
need the full training program; determining competency
among a range of staff and experience levels is more
complex and often requires data gathering and testing
and feedback in the course of work.
Trainers should assemble a bank of local case studies,
local photos and examples to reinforce learning goals.
Training opportunities should not be limited to formal
classroom settings. Trainers should be aware of the
workplace schedules, inclement weather policies, shift
changes and shift downtime for example and take advantage
of these windows of opportunity to present training
modules. Depending on the regular duties of the staff
there are also opportunities to provide training in
informal tailgate sessions or in post storm debriefing
sessions.
The Transportation Association of Canada set out
the following learning goals and best practices related
to winter operations and salt management training.[N]
Salt Management Policy
- Understand the definition and importance of level
of service and that the goal is to achieve the prescribed
level of service.
- Understand the organization's Operating Policies
and their application to winter operations.
- Understand the organization's Salt Management Policy.
Principles of Ice Formation
- Understand slippery road conditions are a result
of water being cooled below its freezing point on
the road surface.
- Understand the sources of moisture on the road
include dew, rain, and snow.
- Understand dew point and what conditions will lead
to dew forming on the road surface. Understand what
conditions will lead to frost and black ice forming
on the road surface.
- Understand the importance of pavement temperature
in making snow and ice control decisions.
- Understand why bridges freeze first.
Science of Freeze Point Depressants
- Understand the concept of a freeze point depressant.
- Understand that chemicals are used to prevent or
break the bond between snow and ice.
- Know the chemical composition of rock salt, and
other chemicals used by the transportation agency.
- Understand that brine rather than the solid chemical
melts the snow and ice.
- Understand the phase diagram for the chemicals
that are used in the organization.
- Understand the implication of chemical concentrations
greater than the eutectic concentration.
- Understand the criteria for the selection of de-icing
chemicals.
- Understand the relationship between chemical concentrations
and freeze point.
- Understand that dry chemicals and pre-wetted chemicals
take time to work.
- Understand that a change from a solid to a liquid
requires heat and can rapidly cool a road surface.
- Understand the testing requirements and risks associated
with the introduction of new snow and ice control
chemicals.
- Understand the principle of refreeze.
Material Use
- Understand the role of traffic and crossfall of
the road in forming and distributing brine.
- Understand when to windrow and when to spin a pre-wetted
solid.
- Understand how to treat special areas such as bridges
and culverts, super-elevations, intersections, hills
(crests, sags, inclines), bus stops and high wind
conditions.
- Understand that chemical should not be applied
to dry pavement where drifting snow is not sticking.
- Understand when to use and not use specific chemicals,
taking into account pavement temperatures, forecasts,
time of day, humidity, traffic volumes etc.
Brine Production and Use
- Understand the procedure for making snow and ice
control liquids from solid chemicals.
- Understand the importance of quality control and
chemical concentration.
Pre-Wetting
- Understand the benefits of using pre-wetting chemicals
and abrasives.
- Understand the difference between proactive anti-icing
and reactive de-icing.
- Understand how dry materials are pre-wetted.
- Understand that salt and sand can bounce or be
blown off the road and that this product loss can
be reduced by pre-wetting.
Anti-Icing
- Understand the concepts of liquid anti-icing.
- Understand the benefits of a proactive anti-icing
approach.
- Understand how to fill spreaders and anti-icing
units with liquid chemicals.
- Understand the health, safety and environmental
precautions that need to be taken when handling liquid
chemicals.
- Understand how to measure brine concentrations.
Plowing
- Understand the timing of plowing operations so
that chemicals are not plowed off the road prematurely.
- Understand the importance of timely plowing.
- Understand how to efficiently plow each beat/route.
Road Salt and the Environment
- Understand that chlorides are mobile in the environment.
- Understand that road salt may attract some wildlife
to the road, potentially increasing the hazard of
animal/vehicle collisions.
- Understand that high salt levels can harm vegetation
and agricultural crops adjacent to the roadway.
- Understand that high salt levels can harm animals
including fish living in streams, wetlands and lakes.
- Understand that it is desirable to only use enough
chemical to achieve the prescribed level of service.
Maintenance Yards
- Understand that all salt and sand/salt blends should
be covered to minimize salt loss.
- Understand that salt spillage is wasteful and can
be harmful to the environment.
- Understand the salt-handling activities that result
in wasteful releases of salt to the environment.
- Understand how these salt-handling activities should
be carried out to prevent the wasteful release of
salt to the environment.
- Understand that timely yard maintenance and repairs
are necessary to control salt loss.
- Understand maintenance yard salt cleanup procedures
that must be followed.
Snow Disposal
- Understand how to manage the snow pile to facilitate
melting.
- Understand the measures to be used to control nuisance
effects (noise, dust, litter).
- Understand how to monitor and record chloride,
metal, pH, TPH and suspended solids in meltwater discharges.
- Understand how the snow disposal system has to
be managed to be cost-effective and to reduce environmental
and social impacts.
Managing Snow Disposal Sites
- Understanding how to manage the snow pile to facilitate
melting.
- Understanding the measures to be applied to control
nuisance effects such as:
- Noise from trucks and equipment.
- Visual impacts such as dirty snow piles and vehicle
and site lights from nighttime dumping.
- Dust.
- Litter and debris.
- Understanding how to monitor, and record the chloride,
metals, pH, Total Petroleum Hydrocarbons (TPH) and
suspended solids in the meltwater discharges.
- Understand how the snow disposal system has to
be managed to be cost effective and to reduce environmental
and social impacts.
- Understand the importance of proper record keeping
and how to complete the required documentation on
snow received and quality of meltwater being discharged.
Record Keeping
- Understand the importance of timely and accurate
records.
- Understand the importance of good records for mounting
a due diligence defense in the event of a lawsuit.
- Understand how to complete the organization's activity/
storm reports.
- Understand the importance of recording actions
and inactions and the rationale for each.
- Understand the importance of knowing the beat/route
and what it takes to properly maintain it to the prescribed
LOS.
Spreaders
- Understand the concept of putting out the right
material, in the right amount, at the right time,
and leaving it there long enough to do the job.
- Understand how the electronic controller and gate
settings on each spreader must be set to achieve the
specified application rate.
- Understand how to calibrate each spreader to ensure
that the right amount of material is being spread.
- Understand how to recognize when re-calibration
is necessary.
Drift Control
- Understand the role and effective placement of
snow drift control devices (structural snow fences,
snow ridging, agricultural stubble, living snow fences).
More information on snow fence and berm design is
included in Chapter 3-10.
Weather Forecasts
- Understand the kinds and sources of weather information.
- Understand how to read a weather forecast.
- Understand what can affect local weather conditions
and why weather might vary from one location to another.
- Understand lake effect snowfalls.
- Understand that wind chill does not significantly
affect absolute road temperatures but does affect
the rate of cooling.
- Understand when a forecast could be wrong.
Wind
- Understand that a wind of 15 km/hr is needed to
drift snow.
- Understand how wind changes can signal an approaching
or passing storm.
Weather Tracking
- Understand how to monitor weather conditions and
anticipate changes.
- Understand how to read a radar image and use the
information in decision-making.
Weather and Decision-Making
- Understand how weather forecasts can be used in
making snow and ice control decisions.
Pavement Temperatures
- Understand the concept of heat balance and how
it can affect pavement temperatures.
- Understand how to read a pavement condition forecast.
- Understand how pavement condition forecasts and
real time information can be used in making snow and
ice control decisions.
RWIS and IRTS
- Understand the components and purpose of RWIS installations.
- Understand how to read and interpret RWIS data.
- Understand how to properly mount a truck-mounted
IRT so as to avoid erroneous readings.
- Understand that IRT's are for measuring temperature
trends, not exact temperatures.
- Understand why odd readings might be obtained (e.g.
interference, out of calibration, acclimatization,
buried utilities, shading etc).
- Understand precautions about handling and using
IRTs.
- Understand the role of pavement crossfall in snow
and ice control and when to windrow and when to broadcast
chemicals.
- Understand the importance of pavement surface temperature
on snow and ice control decision-making.
- Understand how to track pavement temperature trends.
- Understand what factors can affect pavement temperatures
and how knowledge of these factors can be used to
predict temperature changes.
- Understand how to treat different pavement conditions
during different types of weather events. Also, good
pavement design can help improve road salt performance,
minimize usage for the same or better level of service
and safety, and thus reduce environmental impact.
- Monitor pavement temperatures to assist in making
decisions. This can be done when mobile using hand
held or truck mounted infrared thermometers. Road
Weather Information Systems can provide a surface
and subsurface pavement temperature at a fixed location,
and can support the generation of a pavement condition
forecast as well as real-time pavement condition information.
- Record pavement temperature trends in daily logs,
along with pavement conditions, weather conditions
and winter treatment strategy.
- Test pavement temperature monitoring equipment
at least annually to ensure that they are operating
correctly. Inaccurate equipment should be recalibrated,
repaired or replaced.
Trainings should be scheduled for each fall, close
to the onset of the snow and ice control season and
should include seasonal and contracted personnel. While
this season of the year prevents the actual plowing
of snow, it does not preclude training and testing
on such items as; trucks, grader and loader operation,
mounting and adjusting the plow, familiarity with plow
and spreader control, driving skills involving turning
and backing, and clearance judgment with the plow mounted.
This type of training can be given by Equipment Operator
Instructors.
Some transportation agencies have included testing
and a minimum passing grade in their training programs.
In the absence of any industry certification standards
this type of internal agency certification may be advantageous
to those transportation agencies wanting to provide
an assurance of minimum competency levels.
PENNDOT "Smart Salting" Training
and Snow Academy
PENNDOT's training program is incorporated with winter
planning, which starts in April with after action reviews,
equipment repairs, route identification, and route
assignments. In the fall, PENNDOT conducts dry runs,
marks hazards, and familiarizes operators. Foremen
have to sign off that equipment operators have done
this. Training for Winter Operations includes "Levels
of Service," presented by the leader of the local
organization. The training addresses mission, vision,
customer service philosophy, priority roads, intervals
of service, peak travel times, local directives and
changes, alternative resources—temporary operators,
etc. A "Smart Salting" module covers material
testing, sampling, salt specs for current year's content
and other elements, including how to read lab reports.
The training program and standards are presented as
putting the operator in charge of his own destiny;
by adhering to internally developed procedures, PENNDOT
staff attends to these issues so the state environmental
agency doesn't have to. One quarter of the workforce
attends a two day Snow Academy yearly. All other employees
receive one day Snow Academy refresher training. Trucks
are equipped with ground speed controlled spreaders,
which allow precise control of material application
rates at any speed or engine rpm with "electric
over hydraulic" controls and load-sensing hydraulic
pumps. Training occurs on this equipment as well. All
spreaders are calibrated each year.
NSYDOT Salt Sensitivity
Training for Stormfighters, and Snow and Ice Guidelines
NYSDOT has had to work to educate and train their
workforce, the public, and even the police. The Department
has implemented training to teach that "the way
we've always done it" is not acceptable; the Department
wants to get the most bang for the buck AND do an effective
and safe job. NYSDOT found their decision to dedicate
more resources to training is bearing fruit and raising
consciousness among staff. One class is "Salt
Sensitivity for Stormfighters." The agency teaches
where all the applied salt and brine go; 55 percent
goes back into surface drains, 45 percent goes into
the ground and affects roadside vegetation. Liquid
brine has led to salt reductions but increased mowing,
as salt retards growth. NYSDOT trains designers for
considering snow and ice as well; i.e. enough road
to store the snow, roads built on a slight berm, for
snow to blow across, road geometrics, design of living
snow fences, identification of drainage features and
roadside water quality receptors, and use of raised
markers, roundabouts, turnabouts, and curbing.
Maintenance environmental specialists focus on erosion
control and spill containment year round. NYSDOT has
developed Snow & Ice Guidelines primarily for managers,
with application rates, storage of materials, etc.;
it is currently being revised and will be out in 2005.
NYSDOT has another version for operators, NYSDOT's
Snow and Ice Operators Manual, that reviews application
rates, how to plow, when to use chains or not, how
to put on plow wings, etc. The Department is certifying
operators and one-person plowing and providing a certification
for calibration. NYSDOT encourages many employees to
get this training because it gives them a better appreciation
for application rates. Promotional opportunities are
tied to these certifications for Category 3 operators.
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