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Title:Federal Wage System Job Grading Standard for Sandblasting, 5423
Author:U.S. Office of Personnel Management
Subject:
Keywords:operating, maintenance, stationary, portable sandblasting equipment
Creator:Acrobat PDFMaker 7.0 for Word
Producer:Acrobat Distiller 7.0 [Windows]
CreationDate:D:20050413165621-0400
PDF Version:1.4
D:20050413165624D:20050413165624HeaderFooterSandblasting, 5423 TS-29 March 1974 Federal Wage System Job Grading Standard for Sandblasting, 5423
Table of Contents WORK
COVERED\
.2
WORK NOT COVERED\
..2
TITLES\
.2
GRADES\
.2
SANDBLASTER, GRADE 5\
.3
SANDBLASTER, GRADE 7\
.4 U.S.
Office of Personnel Management 1 Sandblasting, 5423 TS-29 March 1974 WORK COVERED This standard is used to grade nonsupervisory jobs involved in
setting u\
p, operating, and performing preventive maintenance on complete stationary and portable sandblasting equipment and machines utilized for
cleaning metal and nonmetal surfaces. The work requires a knowledge of the operating and preventive maintenance features of sandblasting equipment
and machines, cleaning characteristics of metals and nonmetals, cutting or abrasive quality of a wide selection of sand-like abrasives, and the optimum
air pressures with particular abrasives to obtain the desired finish without damage to workpieces. The work requires the skill to position and hold
workpieces and blasting nozzles, and carry out blasting operations and procedures in a secure manner. WORK NOT COVERED This standard does not cover
work that involves the operation of shot pe\
ening machines to blast bent and twisted areas of parts to increase their resistance to fatigue \
cracks.
[See Shot Peening Machine Operating Series, 3769.] TITLES Jobs covered by this standard are to be titled Sandblaster. [NOTE: Although the use of
sand as an abrasive has normally declined, the t\
raditional title of "Sandblaster" is being retained for this job grading standard. The exact same basic
principles of sand-blasting are applied in most abrasive blasting equipment and machine operations. Also, the term "sand" is normally applied to any
abrasive of sand-like quality, wheth\
er it's metal or nonmetal.] GRADES This standard does not describe all achievable grades at which jobs might be
established. If jobs differ substantially from the skill, knowledge, or other work requirements described for the grade levels of the jobs in the
standard, they may perhaps warrant grading either above or below the grades of these jobs, based on sound job grading methods. U.S. Office of Personnel
Management 2 Sandblasting, 5423 TS-29 March 1974 SANDBLASTER, GRADE 5 General: The grade 5 sandblaster operates a machine or cabinet sort of
abrasive blasting equipment to process little or moderate size metal or nonmetal items. The equipment operated is generally preset and requires only
minor valve adjustments occasionally to regulate the velocity of the abrasive stream for the sort and extent of cleaning to be done. The abrasives
used are \
standard types such as metal grit or seeds for machines and glass beads for cabinets. Typically, the work at this level involved following
established procedures in prep\
aring workpieces and blasting equipment, loading blasting machine rotary tables or tumble barrels, setting timer for
several workpieces and conditions, using scraping tool to remove stubborn tar, scale, paint, etc., or performing a single manual sandblasting process,
i.e., in blasting cabinets, to carry out production runs. Grade 5 sandblasters are also needed to maintain their equipment in optimum operation as
specified by preventive maintenance schedules and safety requirements. Skill and Knowledge: Knowledge of the operating requirements of rotary blast
machines, tumble blast machines, and nozzle blast cabinets including the use of foot levers and \
the control/operation of gauntlets, nozzle blasts,
air pressures, abrasive f\
eeders, rotary table, tumble drums, timers, and switches. Knowledge of loading strategies and strategies on rotary table or
in tumble drums and cabinets. Capability to use this knowledge to prepare, load, operate,\
adjust, and maintain sandblasting machines and cabinets.
Knowledge of the cleaning characteristics of the far more frequent metals, metal alloys, and synthetic supplies with standard sandlike abrasive agents such
as metal grit, metal shot, seed, glass bead, or other people which are utilized in blasting machines and cabinets. Capacity to use this knowledge with guides
provided to regulate air pressure and flow of abrasive in accordance with the type of item or surface being cleaned as well as the time required to
adequately clean all surfaces. Capability to properly place and position metal and nonmetal parts on rotary tables, in perforated barrels, or at proper
angles in blasting cabinets to thoroughly clean al\
l sides. Capacity to operate timers and switches or foot levers to control or regulate air
pressure and \
the velocity of abrasives. Ability to follow particular sandblasting instructions, shop orders, blast\
ing machine manuals, and
established machine loading and cabinet maintenance procedures. Capability to perform the established sequence of steps to load and unload blasting
machines, regulate the flow of machine abrasives, replenish abrasive supply, start or stop blasting machines, or operate blasting cabinets. Ability
to apply minor maintenance procedures for example removing debris or materials which clog moving parts of rotary tables and tumblers. Responsibility: Is
assigned sandblasting work orally or through established instructi\
ons and procedures. Independently follows the sequence of steps to load machines,
regulate air pressure and abrasive flow, replenish abrasive supply, operate blasting machines and cabinets, and perform minor maintenance procedures
outlined in sandblasting instructions, shop orders\
, and U.S. Office of Personnel Management three Sandblasting, 5423 TS-29 March 1974 blasting machine
or cabinet maintenance manuals. Notes obvious malfunctions of machine requirements for servicing and notifies the supervisor. A higher grade worker
or supervisor is readily available for assistance on unusu\
al difficulties and to spot check completed work. Physical Effort: Work assignments involve
prolonged standing, some walking, and regularly stooping and bending. Continually handles objects weighing from 2 to 11 kilograms [5 to 25 pounds]
and, occasionally, objects weighing in excess of 11 kilograms [25 pounds]. Working Conditions: Work is typically performed mostly inside, in large,
well lighted shop areas with adequate heating and ventilation. Is subject to the possibil\
ity of cuts and strains, and is exposed to constant noise,
dust, and fumes from blasting machines. Is required to wear safety equipment like gloves, arm shield, goggles, and safety shoes. SANDBLASTER,
GRADE 7 General: In comparison with the preset control types of abrasive blasting equipment operated at The grade 5 level, the manually set and
movement-controlled sorts of equipment operated by the grade 7 sandblaster are additional diversified and contain settings, adjustments, and manual
applications which aren't covered by established procedures or involve coordination in setting up portable units and preparing the worksite. The
equipment is housed in unique rooms [i.e., bays, chambers, or booths] or enclosed in open areas. The work requires exacting\
angle and distance
settings of blasting nozzles for objects having unusual shapes;\
varied amounts of air pressures and varied mounts and mixtures of abrasive
compounds for stubborn contaminants and heavy corrosion; timed traverse or repeat adjustments of turntable movements [forward, swivel, and reverse]
for optimum positioning of moderate size or significant complex metal or nonmetal assemblies; or extensive or precise nozzle openings and sweeping
direction of\
blast over challenging internal or external surfaces without causing damages to work or injury to workers nearby. Skill and Knowledge:
Knowledge of the operating, control, and preventive maintenance features of automatic blasting bays, nozzle blasting chambers, portable blasting
units, and nozzle lasting booths for example control panels, feeder lines, trigger mechanism, pressure and abrasive carburetor, hopper, shaker, abrasive
recycler, dust collector, and exhaust system. Knowledge of sandblasting procedures and abrasives for large structures and objects, \
or tiny and
intricate items of metal and nonmetal composition. Capability to use this knowledge to set up, prepare, operate, regulate, and maintain complete
stationary and portable sandblasting equipment safely such that the operation of equipment doesn't endanger the operator or other employees.
Knowledge of the cleaning characteristics of brass, corrosion resistant steel, aluminum, iron, steel, monel, and other metals or nonmetals. Knowledge
of dry and wet blasting compounds including most metal, agricultural, aggregate, glass, and liquid types, and technique of use on a selection of base metal
or nonmetal surfaces. Ability to use this knowledge to identify the composition of surfaces, and determine the correct abrasive or mixture of
abrasives, the U.S. Office of Personnel Management 4 Sandblasting, 5423 TS-29 March 1974 proper blasting equipment, and air or vapor pressure needed
to remove hard contaminants including baked sand, slag, rust, scale, paint, or carbon deposits, or to \
produce numerous grades of rough or smooth
finishes as required. Capability to properly prepare sandblasting bays, chambers, portable units, booths or open areas, and set up operating
controls to blast a selection of metal and nonmetal surfaces, according to the degree of corrosion or the sort and extent of cleaning or finish desired.
For example, regulate the nozzle orifice for the correct pressure of air or vapor to prevent warp\
ing or damaging items or surfaces, and protect
surfaces that aren't to be blasted with appropriate varieties of masking tapes or covers. Capacity to apply the proper techniques and techniques of blasting
including distance of nozzle from surfaces, duration of blasting, angle of blast, and methods for positioning and holding workpieces. Ability to select
nozzles for the kind of blasting job with proper offsets for reaching behind objects to carry out blasting operations safely. Ability to respond to
oral or written sandblasting instructions, technical orders, specifications, shop manuals, and safety rules. Capability to use the information to
establish the type and extent of cleaning needed along with the several methods including brush, hone, shot, sweep, and spot blasting needed, according to
the material, size, and kind of item, areas not to be blasted, plus the kind or mixture of abrasives for the different kinds of metal or nonmetal
surfaces. Capacity to apply operating and maintenance manual instructions to maintain hoses, nozzles, valves, and other equipment. Responsibility:
Is assigned sandblasting work or unique blasting problems orally or by way of written directions including specifications, technical orders, equipment
operating manuals, and safety rules. On own initiative, interprets instructions to figure out the cleaning method for workpieces or surfaces, including
the abrasives to use or mixture of abrasives for the job; the techniques of setting up workpieces and equipment for large or little surface areas;
as well as the appropriate varieties of sandblasting equipment and maintenance procedures to perform sandblasting operations safely. The supervisor provides
technical assistance where written guides are no\
t accessible and checks completed work for overall compliance with acceptable trade practices.
Physical Effort: Work assignments involve standing, stooping, bending, kneeling, reaching, climbing, crawling, and crouching in strained and awkward
positions for prol\
onged periods to blast interior and exterior surfaces at several heights up to 30 meters [100 feet]. Uses hands, legs, and arms
to climb vertical ladders to stagings or suspended platforms. Lifts, carries, and sets up equipment and components that weigh up to 34 kilograms [75
pounds] and, occasionally, objects weighing in excess of 45 kilograms [100 pounds]. May be required to control blasting hose with nozzles subject to
extremely high pressures [e.g., in excess of 100 psi]. Working Conditions: Sandblasting is performed inside and outside in open and enclosed work
locations under varied temperature, illumination, ventilation, and weather conditions. Is subjected to the possibility of cuts, burns, strains and
broken bones. \
Is exposed to noise, dust, and flying abrasives, rust, scale, paint chips, slag, or loose objects, and all kinds of weather at U.S.
Office of Personnel Management 5 Sandblasting, 5423 TS-29 March 1974 work locations. Is required to wear heavy protective gloves, clothing, ear
protection, air-fed hoods or helmets, respirators, and safety shoes. U.S. Office of Personnel Management 6 D:20050413165624D:20050413165624
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