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Selecting a thermal reclaimer for green sand. (Guidelines for selecting a reclaimer, part 2).



Developing sand reclamation Reclamation

A claim for the right to return or the right to demand the return of a security that has been previously accepted as a result of bad delivery or other irregularities in the delivery and settlement process.
 system objectives add to the ultimate utility and economic justification of components.

Having discussed several types of equipment used in green sand reclamation and how they and their ancillary equipment function in part one last month, here are some system guidelines guidelines,
n.pl a set of standards, criteria, or specifications to be used or followed in the performance of certain tasks.
 that will be of assistance in developing and selecting ing a system:

* preliminary testing;

* continuous, unattended operation;

* system consistency;

* process controls;

* dust collection;

* ample storage strategically located;

* space availability;

* economic justification.

It may seem odd, in using basically similar sands, bentonites, carbon additives and a variety of core resins, that such vastly different base materials can be candidates for reclamation, but this is often the consequence.

Therefore, the most important first step toward thermal reclamation of green sand is to have sand tested using a representative foundry sample. These tests will provide a base line for further system design and selection. They will also provide economic justification for necessary future equipment purchases required to reclaim and process sand. It is well to note here that the system must be designed to work with the test sand and reasonable variations of it.

The tests should not only supply qualitative data, but also quantitative data that will establish the capacity requirements by determining the expected reclaim efficiency (the ratio between net usable sand and the gross input sand). This is extremely important because reclaim systems in general are rated by their throughput capacity and not by their output capacity.

The output of the reclaimer re·claim  
tr.v. re·claimed, re·claim·ing, re·claims
1. To bring into or return to a suitable condition for use, as cultivation or habitation: reclaim marshlands; reclaim strip-mined land.
 can be further reduced if dust collection and exhaust hood Noun 1. exhaust hood - metal covering leading to a vent that exhausts smoke or fumes
hood

covering - an artifact that covers something else (usually to protect or shelter or conceal it)

range hood - exhaust hood over a kitchen range
 designs are improper. These two factors could cause losses as high as 20-30%; thus, sizing a reclaim system simply on the basis of new sand requirements is not recommended because that value will result in a shortfall of capacity equal to the reclaim system losses. A more prudent rule would be to use the greater of:

* 1.4 times the current new sand additions;

* the net amount of required reclaim sand divided by actual tested efficiency.

As an example, if a system now requires two tons of new sand per hour, and tests show reclaimer losses of 17% with 5% new sand additions required to make quality cores, there claimer should be sized for between 2.4 and 2.29 tons per hour (tph).

Continuous Operation

All thermal reclaim systems are costly in terms of price per unit capacity. Therefore, it makes sense to design these systems for continuous operation (up to 20-24 hours a day, six days a week). This provides for maximum system utilization and, at the same time, keeps its amortized cost per ton of sand to a minimum. Naturally, this type of operation will place a premium on rugged, heavy duty construction to assure greater system reliability.

A process flow model made at the beginning of the project will guide the selection and sizing of the equipment preceding and following the reclaimer. This allows the reclaim system to be tailored to actual plant operations including such variations as large influxes of scrap cores, floorsweepings and floor mold shakeouts without interrupting operations.

Automated control systems should be designed to sustain continuous operations with only routine preventive maintenance The routine checking of hardware that is performed by a field engineer on a regularly scheduled basis. See remedial maintenance.

preventive maintenance - (PM) To bring down a machine for inspection or test purposes.

See provocative maintenance, scratch monkey.
, inspections and cleanup. This will reduce the cost per reclaimed ton of sand and further justify the economics of the system. Again, a carefully prepared process model at the beginning of the project will assist in designing a system that can operate unattended.

Although a typical thermal reclamation system is a collection of proven components, variations in the quantity and the physical and chemical makeup of the incoming sand can have a dramatic effect upon the equipment operation, fuel-air requirements, combustion, dust collection and the quality of the final product.

If the incoming sand varies widely in physical and chemical make-up, it may be prudent to store different sands-separately, feeding them into the reclaimer in a consistent blend. This would apply for lump sizing because lumps can cause feed and processing problems.

The most critical element in a thermal reclaimer is the requirement to provide verifiable and consistent temperature control throughout the calcination calcination (kăl'sənā`shən), in metallurgy, process of heating solid material to drive off volatile chemically combined components, e.g., carbon dioxide. It is sometimes a step in the extraction of metals from ores.  process. This will ensure maximum removal of organics and breakdown of the bond while not exceeding the fusion temperature. Equipment and controls selection is the key to ensuring this consistency.

Dust collection will also have an interacting effect on the success of the system, and it is important that the dust collector for the reclaimer be a dedicated unit. The reclaim system should never be connected with other systems if they are prone to wide variations in volume and pressure drops because the more variations allowed in the system, the more variations in the output.

Process Controls

The capabilities of today's control systems are well-known and provide an excellent opportunity for thermal reclaim system design.

State-of-the-art motor controls and programmable controllers Programmable controllers

Electronic computers that are used for the control of machines and manufacturing processes through the implementation of specific functions such as logic, sequencing, timing, counting, and arithmetic.
 can easily provide the capability for unattended operation. They can provide system diagnostics able to detect faults, thus minimizing trouble-shooting and downtime The time during which a computer is not functioning due to hardware, operating system or application program failure. . Unattended systems should be equipped with automatic shutdown shut·down  
n.
A cessation of operations or activity, as at a factory.


shutdown
Noun

the closing of a factory, shop, or other business

Verb

shut down
 circuitry to provide protection in the event of a critical component failure or system fault.

These controls can provide the data logging (data) data logging - (data acquisition) Storing a series of measurements over time, usually from a sensor that converts a physical quantity such as temperature, pressure, relative humidity, light, resistance, current, power, speed, vibration into a voltage that is then converted  capability for either direct monitoring and review or have data processed through the plants mainframe or network computer system.

In sum, the controls for a thermal reclaim system should be selected on the merits on the merits adj. referring to a judgment, decision or ruling of a court based upon the facts presented in evidence and the law applied to that evidence. A judge decides a case "on the merits" when he/she bases the decision on the fundamental issues and considers  of their ability to provide process consistency and stability, affect overall system reliability, process data, and possess the diagnostics to detect faults and minimum downtime.

Dust Collection

Dust collection cannot be treated as an after thought, but rather, it must be recognized as an integral part of the system. As previously stated, the ideal situation is to have a dedicated dust collector for the reclaim system. Should an existing collector have the capability to work in the system, it's shared operation should be such that it will not impose volume or pressure drop variations on the reclaim system.

If such variations exist, they must be either equalized by the addition of control dampers, etc., or otherwise eliminated, or a dedicated collector must be used for the reclaimer. External variations in the dust collection system can cause the following problems:

* inadequate removal of unwanted fines, dead clay, ash, etc.;

* excessive removal of usable sand grains;

* imbalance in the recuperator-preheat system, which can unduly tax the temperature controls;

* excessive duct work wear;

* excessive dust accumulation causing housekeeping problems and potential component contamination and failure.

Basic hood and ductwork duct·work  
n.
A group or system of ducts: installed new ductwork in the building. 
 design must optimize both the removal of unwanted fines and the retention of usable sand grains. Storage Location

As noted, the reclaim system should be designed for continuous operation even though the plant may operate only one or two shifts.

Adequate storage of the incoming spents-and and outgoing reclaimeds-and is one of the least costly means of optimizing the system. The added expense of additional storage is minor when compared to the operational utility that extra storage can provide.

Buffer storage Noun 1. buffer storage - (computer science) a part of RAM used for temporary storage of data that is waiting to be sent to a device; used to compensate for differences in the rate of flow of data between components of a computer system
buffer store, buffer
 areas can provide a more consistent reclaim operation, assuring that critical system components, such as the preheater, calciner and post-scrubbing equipment, will not be stopped or operated at reduced throughput.

Space Availability

Buildings play an important role in the success of a reclaim system. While it is more desirable to select the equipment arid ar·id  
adj.
1. Lacking moisture, especially having insufficient rainfall to support trees or woody plants: an arid climate.

2.
 plan a building or penthouse penthouse

Enclosed area on top of a building. A penthouse can be an apartment on the roof or top floor of a building or a structure on the roof housing the top of an elevator shaft, air-conditioning equipment, or stairs leading to the roof.
 around it, economics will not always permit this luxury.

Therefore, if plant space is available, it may be more economical to select equipment based on availability. Space considerations may favor the rotary kiln A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. Materials produced using rotary kilns include:
  • Cement
  • Lime
  • Refractories
  • Metakaolin
  • Titanium dioxide
  • Alumina
 or fluid bed separators for low overhead, greater floor space situations, or the taller integrated fluid bed or fluid bed separators where more headroom head·room  
n.
1. Space above one's head, as in a motor vehicle, above a doorway, or in a tunnel; clearance.

2. Electronics Dynamic headroom.
 but less floor space are available.

Another consideration is to place the reclaimer in a distant location and bear the cost of conveying the sand longer distances. Careful site selection is important because conveying systems serving multiple destinations with capacities of 20-25 tph or less will favor pneumatic pneumatic /pneu·mat·ic/ (noo-mat´ik)
1. pertaining to air.

2. respiratory.


pneu·mat·ic
adj.
1. Of or relating to air or other gases.

2.
 transporting, while fewer destinations and greater capacity will favor belt conveyors. in either case, investment in a relatively low operating cost building should be carefully contrasted with the higher cost of materials handling equipment Mechanical devices for handling of supplies with greater ease and economy. See also materials handling. .

If adverse weather conditions exist, heat exchangers heat exchanger

Any of several devices that transfer heat from a hot to a cold fluid. In many engineering applications, one fluid needs to be heated and another cooled, a requirement economically accomplished by a heat exchanger.
 in the reclaim system may be a cost-effective consideration as a system component.

Reclaim Economics

Failure to establish economic justification for proper system design and selection guidelines can result in disastrous results. Careful consideration of the aforementioned seven guidelines will provide system parameters that will be accurate and economically defensible de·fen·si·ble  
adj.
Capable of being defended, protected, or justified: defensible arguments.



de·fen
.

If a proper reclaim system cannot be justified, a poor selection may prove a worse investment than none at all. With the variety and quality of equipment available today, coupled with the ever-increasing cost of new sand, transport and disposal, the latter case should not prevail.

Water Quality & Waste Disposal Committee 10-F

This article provides a preliminary view of the issues surrounding the reauthorization of the Resource Conservation and Recove Act (RCRA RCRA Resource Conservation & Recovery Act of 1976
RCRA Resort and Commercial Recreation Association
). The act governs the management of solid and hazardous waste Hazardous waste

Any solid, liquid, or gaseous waste materials that, if improperly managed or disposed of, may pose substantial hazards to human health and the environment. Every industrial country in the world has had problems with managing hazardous wastes.
 in the U.S. and could have significant impacts on foundries and other U.S. manufacturing industries manufacturing industries nplindustrias fpl manufactureras

manufacturing industries nplindustries fpl de transformation

.

Potential impacts on foundries include stringent and costly recycling recycling, the process of recovering and reusing waste products—from household use, manufacturing, agriculture, and business—and thereby reducing their burden on the environment.  process controls and increased disposal costs due to an increase in the amount of foundry materials considered hazardous. Highlights of the major issues and proposed legislation are provided as are environmental community and industry positions on RCRA. A proposed strategy for improving the act from a foundry industry perspective is also provided.

Background

RCRA was initially passed by the U.S. Congress in 1976. Subtitle sub·ti·tle  
n.
1. A secondary, usually explanatory title, as of a literary work.

2. A printed translation of the dialogue of a foreign-language film shown at the bottom of the screen.

tr.v.
 D of the act addressed the management of solid waste." Subtitle C of RCRA established a "cradle tO grave" hazardous waste management system and required the U.S. Environmental Protection Agency Environmental Protection Agency (EPA), independent agency of the U.S. government, with headquarters in Washington, D.C. It was established in 1970 to reduce and control air and water pollution, noise pollution, and radiation and to ensure the safe handling and  (EPA EPA eicosapentaenoic acid.

EPA
abbr.
eicosapentaenoic acid


EPA,
n.pr See acid, eicosapentaenoic.

EPA,
n.
) to adopt regulations to implement the intent of the law. RCRA allowed states to develop their own solid and hazardous waste management programs, as long as they called for standards that were as stringent as those outlined under the federal regulatory program. Subsequent EPA regulations defined the terms 'solid' and 'hazardous' wastes and devised standards for the management of each.

RCRA was amended in 1980 and again in 1984. The 1984 Hazardous and Solid Waste Amendments (HSWA HSWA Health & Safety at Work Act
HSWA Health & Safety At Work Etc Act (UK)
HSWA Hazardous & Solid Waste Amendment of 1984
HSWA Henri Stern Watch Agency (New York) 
) have had a significant impact on U.S. industries, including foundries. Major EPA rules issued under HSWA include land disposal restrictions that now require all hazardous waste to be treated to "Best Demonstrated Available Technology" standards before being disposed of in a landfill.

The Toxicity Characteristic Leaching Procedure Toxicity characteristic leaching procedure (TCLP) is a soil sample extraction method for chemical analysis.

An analytical method to simulate leaching through a landfill. The leachate is analysed for appropriate substances.
 TCLP TCLP Toxicity Characteristic Leaching Procedure (US EPA)
TCLP total concentrate leachate procedure
TCLP Type Classification Limited Procurement
TCLP Type Classification Limited Production
) test replaced a former test method in September 1990. TCLP is used to determine if a solid waste is considered hazardous based on its ability to leach certain constituents under acid conditions. This test is generally more aggressive on metallic waste streams and has greatly increased the amount of materials considered to be hazardous waste, particularly impacting nonferrous non·fer·rous  
adj.
1. Not composed of or containing iron.

2. Of or relating to metals other than iron.


nonferrous
Adjective

1.
 foundries. EPA expected the TCLP rule to triple the amount of waste considered hazardous under RCRA.

In July 1990, EPA outlined the structure of the HSWA corrective action A corrective action is a change implemented to address a weakness identified in a management system. Normally corrective actions are instigated in response to a customer complaint, abnormal levels if internal nonconformity, nonconformities identified during an internal audit or  program in a proposed rule. This program would impose site investigation, study procedures and cleanup requirements for RCRA facility owner/operators. The complexity of the proposed rule is probably best measured by the time necessary for EPA to develop a final rule in response to public comments. The final rule is not expected until January 1993.

Major Issues

Reauthorization of RCRA is now being considered by Congress. Walt Kiplinger, AFS A distributed file system for large, widely dispersed Unix and Windows networks from Transarc Corporation, now part of IBM. It is noted for its ease of administration and expandability and stems from Carnegie-Mellon's Andrew File System.

AFS - Andrew File System
 vice president government affairs, expects floor action on the bill in 1993 or 1994. Although the

RCRA debate is in its preliminary stages, the following general topics appear to be the major issues being contemplated by

Congress:

Recycling Management Standards-Placing control measures on industrial material recycling processes.

Definition of Solid Waste-New definition of solid waste, a key term with man policy implications under-both the solid and hazardous-waste management programs, would have costly effects.

Waste Minimization ProgramsWould require hazardous waste generators to prepare, certify cer·ti·fy  
v. cer·ti·fied, cer·ti·fy·ing, cer·ti·fies

v.tr.
1.
a. To confirm formally as true, accurate, or genuine.

b.
 and submit to EPA toxics used and source reduction plans-and performance reports. Requirements would be legally enforceable.

State Issues-Interstate transport and disposal of waste has been a hot topic in Washington. Alabama and several other states have placed shipment bans on waste transported from states that do not have adequate disposal capacity assurance plans. In addition, states have used their authority under RCRA to develop regulations that are more stringent than federal requirements for industrial orphan orphan: see adoption; foundling hospital; guardian and ward.


See widow & orphan.
Orphan
See also Abandonment.

Adverse, Anthony

finally, at middle age, discovers origins. [Am. Lit.
 waste," materials classified in the abyss between solid and hazardous waste. This has led to a gamut See color gamut.

gamut - The gamut of a monitor is the set of colours it can display. There are some colours which can't be made up of a mixture of red, green and blue phosphor emissions and so can't be displayed by any monitor.
 of regulatory approaches that have begun to impact fair competition and influence business siting decisions.

Proposed Legislation

Several bills have been introduced in the Senate to address RCRA reauthorization. The most prominent bill, S. 976, was introduced by Sen. Max Baucus Max Sieben Baucus (born December 11 1941) is the senior United States Senator from Montana and is a member of the Democratic Party. Baucus is currently chairman of the United States Senate Committee on Finance and 10th Longest-serving current Senator.  DMT See DSL. ) on April 25,1991 (102nd Congress, first session). The Baucus bill focuses on solid waste management issues, specifying recycled content standards for various recyclable re·cy·cle  
tr.v. re·cy·cled, re·cy·cling, re·cy·cles
1. To put or pass through a cycle again, as for further treatment.

2. To start a different cycle in.

3.
a.
 commodities, packaging standards and national waste management policy goals.

The bill establishes a new class of materials under RCRA referred to as "hazardous secondary material" and requires EPA to "...promulgate To officially announce, to publish, to make known to the public; to formally announce a statute or a decision by a court.  requirements for the recycling, recovery and reuse reuse - Using code developed for one application program in another application. Traditionally achieved using program libraries. Object-oriented programming offers reusability of code via its techniques of inheritance and genericity.  of hazardous waste and hazardous secondary material..." Unfortunately, if EPA fails to issue these regulations within 24 months of enactment, hazardous secondary material" will be deemed hazardous waste and will become subject to all of the costly management requirements with which foundries are all too familiar.

It is likely that many foundry process residuals such as sands and slag would be classified as "hazardous secondary material" under S.

976. In addition, the bill requires that the EPA regulations covering the recycling, recovery and reuse of hazardous secondary material must contain:

* management standards essentially

* equivalent to hazardous waste requirements; corrective action;

* management of slag' in accordance

* with hazardous waste requirements

* if the slag is characteristically hazardous or derived from a listed hazardous waste;

* permitting, financial assurance and periodic inspection requirements. it is interesting to note that while the Baucus bill establishes recycling as the second-highest priority waste management alternative in the bill's national policy statement, it also poses onerous on·er·ous  
adj.
1. Troublesome or oppressive; burdensome. See Synonyms at burdensome.

2. Law Entailing obligations that exceed advantages.
 and costly requirements on businesses that practice recycling. It also removes the incentive from firms that practice this beneficial resource recovery technique.

S.982, a bill introduced by Sen. John Chafee (R-RI), expands on the recycling provisions contained in the Baucus bill. Chafee's bill is intended to 'clarify the Environmental Protection Agency's authority to regulate hazardous waste recycling..." The bill contains many troubling provisions, and could, for the first time, inflict RCRA requirements on industrial manufacturing processes.

The bill would essentially require recycling facilities to comply with the treatment, storage and disposal facility requirements set forth at 40 CFR CFR

See: Cost and Freight
 264 and 265 (as well as 40 CFR 266, 268) The Code of Federal Regulations The New Deal program of legislation enacted during the administration of President franklin roosevelt established a large number of new federal agencies, which generated a shapeless and confusing mass of new regulations.  (CFR) is a codification The collection and systematic arrangement, usually by subject, of the laws of a state or country, or the statutory provisions, rules, and regulations that govern a specific area or subject of law or practice.  of general and permanent rules published in the Federal Register.

Chafee's bill would also require facility owner/operators using a "closed loop manufacturing process" or direct reuse manufacturing process' to provide certification to EPA that they are exempt from the costly recycling standards contained in S. 982. It is highly likely that foundries that reclaim sand prior to reuse would be subject to the costly provisions of Chafee's bill. Fortunately, passage of S. 982 appears unlikely.

Another bill was expected to be introduced in the Senate at press time and could not be reviewed before the publication deadline. This bill is to be sponsored by the Business Recycling Coalition (BRC BRC Black Rock City (Burning Man)
BRC British Retail Consortium
BRC Business Resource Center (Small Business Administration)
BRC Bisexual Resource Center
BRC Black Radical Congress
), a group of several major industries, including AFS, and headed by the U.S. Chamber of Commerce The U.S. Chamber of Commerce is the world's largest not-for-profit federation of businesses, representing more than 3 million businesses and organizations in the United States. As of 2003, the chamber was comprised of 3000 state and local chambers and 830 business associations. . The bill will most likely be introduced by Sen. John Warner (R-VA). The BRC-Warner bill will probably propose a separate subtitle for recycling activities.

This "Subtitle K" approach will be based on the BRC statement of principles, which recognize that materials recycling is not waste treatment or disposal. The BRC advocates a recycling policy that recognizes the benefits of this practice and petitions Congress to establish a regulatory regime that encourages materials recycling, recognizing that recycling ranks high as a preferred strategy for pollution prevention.

Under Subtitle K, secondary materials would not be regulated as solid or hazardous waste but would be subject to existing environmental protection requirements such as Clean Air Act and Clean WaterAct emission and discharge limitations. In addition, recyclers would need to complete various record-keeping tasks to ensure compliance with Subtitle K. This approach balances the need for recycling controls with the tremendous environmental and economic benefits that this resource recovery practice provides.

An important bill is expected to be introduced this fall by U.S. Rep. Al Swift Allan Byron Swift (born 12 September 1935), an American politician, served as a member of the United States House of Representatives from 1979 to 1995. He represented the Second Congressional District of Washington as a Democrat.  (D-WA), who heads the Subcommittee on Transportation and Hazardous Materials of the House Energy and Commerce Committee. The bill is expected to be a flagship of the RCRA reauthorization debate.

Group initiatives

Two major environmental coalitions have announced positions on RCRA reauthorization.1

One group, consisting of 12 organizations including the Environmental Defense Fund, National Resource Defense Council and the Sierra Club Sierra Club, national organization in the United States dedicated to the preservation and expansion of the world's parks, wildlife, and wilderness areas. Founded (1892) in California by a group led by the Scottish-American conservationist John Muir, the Sierra Club , has prepared an RCRA position paper. The paper includes two points of interest to the foundry industry:

* mandatory recycling provisions for solid waste commodities;

* a mandatory reuse program for all vendors of large appliances and motor vehicles to enhance recovery and reuse of metals.

The War on Waste' is a coalition of more than 400 groups primarily coordinated by Clean Water Action and Greenpeace. The War on Waste platform calls for:

* a moratorium A suspension of activity or an authorized period of delay or waiting. A moratorium is sometimes agreed upon by the interested parties, or it may be authorized or imposed by operation of law.  on the construction of hazardous waste landfills, incinerators, deep well injection and medical incinerators;

* a 50% reduction in the use of toxic chemicals Any chemical which, through its chemical action on life processes, can cause death, temporary incapacitation, or permanent harm to humans or animals. This includes all such chemicals, regardless of their origin or of their method of production, and regardless of whether they are produced  by industry and a 75% recycling rate of municipal solid waste “Municipal waste” redirects here. For other uses, see Municipal waste (disambiguation).
Municipal solid waste (MSW) is a waste type that includes predominantly household waste (domestic waste) with sometimes the addition of commercial wastes collected by a
 by the year 2000;

* an expansion of Subtitle C that would increase the amount of material considered to be hazardous waste.

Strategies for achieving these ambitious goals are not clearly identified in the War on Waste platform.

It appears that the position of environmental groups on RCRA reauthorization is somewhat divided and will probably change as various legislative approaches are considered by Congress.

Industry Position

Though the RCRA debate is in the early stages, several major issues that could impact the foundry industry have been identified. Preliminary positions on these issues are outlined in this section and may be changed as various policy options are put forth.

Recycling-AFS has aligned itself with the BRC. The BRC proposal should keep most industrial recycling processes and materials out of the complex and expensive RCRA management scheme. The Subtitle K program provides for control and management of recycling activities yet does not place the onerous treatment, storage and disposal facility requirements on businesses employing this environmentally beneficial practice.

This regulatory scheme is consistent with EPA's pollution prevention policy and the national waste management policy statements contained in other proposed RCRA legislation. The BRC proposal will encourage well-managed recycling processing at industrial facilities and will put the resource conservation and recovery theme back into RCRA.

Beneficial Reuse-AFS will press for recognition of foundry sand as a 'recycled or reused material" and will encourage management of this material under a regulatory program, but not under Subtitle C of the act. Individual states must consider recycling before treatment or disposal options for foundry sand and other similar industrial materials. Such action would be consistent with EPA's pollution prevention strategy.

Subtitle C Expansion-Expansion of this subtitle poses grave consequences for foundries and other U.S. industries. The TCLP rule has greatly increased the amount of materials considered as hazardous wastes. Expansion of Subtitle C would pose serious capacity questions (e.g., Could the U.S. waste management industry handle the increased volume of materials at a time when expansion of waste management facilities is literally impossible due to permitting and siting constraints?). The current business climate, combined with higher operating costs operating costs nplgastos mpl operacionales  stemming from expansion of Subtitle C, could be detrimental to the U.S. manufacturing sector in the competitive international marketplace. Subtitle C expansion would be extremely costly and would provide limited environmental benefits and, therefore, should not be included in any RCRA reauthorization package.

Strategy

Members of the AFS 10-F Committee are working closely with the AFS Washington office to follow the RCRA reauthorization process and provide technical support to Kiplinger. A position paper will be developed by the 10F Committee.

Our objective, once armed with a position paper and industry waste data, is to establish in RCRA the authorization for a flexible program to encourage the reuse of foundry sand, possibly subject to 'recycled or reuse material" regulations but not subject to the requirements of RCRA Subtitle C (hazardous waste). Such provisions would be consistent with the intent of EPA's proposed Pollution Prevention Policy Statement that calls for the full use of source reduction techniques and environmentally sound recycling and reuse.

A three-track political strategy to educate both the House Subcommittee on Transportation and Hazardous Materials and the Senate Subcommittee on Environmental Protection for this purpose is being developed.

* Track One would entail the development of an educational/public relations "kit" to include information and data on the industry, its customers, its importance to the economy and its waste disposal practices.

* Track Two would involve identification of relationships between AFS members as constituents of those subcommittee members and others considering RCRA reauthorization. The 10-F committee will inform state and local AFS chapters of RCRA issues during the reauthorization process through modern casting and Control News publications, Special Letter alerts, and AFS environmental conferences.

* Track Three would involve a commitment from these foundrymen constituents to visit (in Washington and/ or district offices) those RCRA-involved subcommittees and committee members and their staffs to promote" foundry sand as a recyclable, beneficial and useful material.

We think the evidence will be on our side, but we will have to tell our story aggressively if we want legislative recognition.

Beneficial reuse has been going on successfully for many years, and some documentation of that success has been developed. It is, however a relatively new consideration for the states and a new concept to most of the public.

We feel sure that inclusion of foundry sand in a new federal RCRA law would overcome much of the hesitation by state authorities to approve sand for

like all U.S. industries, foundries have a lot at stake in the outcome of RCRA reauthorization. The following actions are suggested for foundrymen who want to take a proactive role in the RCRA debate:

* stay informed of developments through your local AFS chapter;

* obtain the industry position paper when it is available;

* evaluate the impact on your business; establish or rekindle re·kin·dle  
tr.v. re·kin·dled, re·kin·dling, re·kin·dles
1. To relight (a fire).

2. To revive or renew: rekindled an old interest in the sciences.
 relationships with elected representatives and keep the AFS Washington office apprised of your efforts.

* get out the message! Inform your members of Congress of the RCRA issue, the industry position and its impact on your business.

The AFS 10-F Committee will continue to monitor RCRA reauthorization developments and keep the industry informed through various channels.
COPYRIGHT 1991 American Foundry Society, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1991, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:Special Report: Sand Reclamation
Author:Smith, Robert J.
Publication:Modern Casting
Date:Sep 1, 1991
Words:3790
Previous Article:Detecting radioactive materials in scrap.
Next Article:Many serious issues surround the RCRA reauthorization.
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