App B - In-Checking Gravity Roller Conveyor

TECHNICAL PROPOSAL QUESTIONNAIRE

FOR

Offeror: _ Solicitation No. F33600- -R- _

Offeror:

-R-

APPENDIX B

FOR

IN-CHECKING GRAVITY ROLLER CONVEYORS

AT

TYNDALL AIR FORCE BASE (AFB), FL

BUILDING 266

CSN: ATY0B9

DATE: 1 June 2010

PREPARED BY:

Robert O. Burns

PROJECT ENGINEER

403 SCMS/GUEC

Shane Legge

REVIEWER

403 SCMS/GUEC

Table of Contents

Tyndall AFB FL, App B - Page i

SCOPE

General scope This appendix establishes the minimum performance, design, fabrication, installation, and test requirements for two in-checking gravity roller conveyor (GRC) systems for the 325th Logistics Readiness Division, in Building 266, at Tyndall Air Force Base (AFB), FL. The work shall be completed in accordance with this appendix, the Cover PD, and Air Force (AF) Drawing ATY0B9-01. This appendix covers all equipment, materials, and labor necessary to complete installation of the system.

1.2. Definitions

1.2.2.3. Load distribution

Package/tote pan weights range from fully loaded to empty. The center of gravity may deviate by as much as 10 inches from the center of the package/tote pan.

1.2.4. Conveyor

In this appendix, conveyor refers to both the gravity roller conveyor and the ball transfer conveyor that are used to transfer tote pans containing small to medium size items or boxes.

1.2.5. Ball Transfer conveyor

Ball transfer conveyor consists of lanes of non-powered ball transfers in accordance with Appendix D of the Cover PD.

1.2.6. Interfacing conveyor

Interfacing conveyor refers to all gravity roller conveyor sections and ball transfer conveyor decks that the referenced conveyor is adjacent to and can transfer tote pans containing small to medium size items or boxes/packages on to.

APPLICABLE DOCUMENTS

Applicable documents shall be in accordance with Section 2 of the Cover PD.

REQUIREMENTS

System description The two in-checking conveyors shall be located as shown on AF Drawing ATY0B9-01 and integrated with the in-checking modular office as specified in Appendix A. The conveyors shall handle boxes varying in sizes up to 18 inches high by 24 inches long by 24 inches wide and tote pans containing small to medium size items or boxes. The in-checking conveyors shall consist of independent lines of stationary gravity roller conveyors (GRCs), tote pans, mechanical fasteners, and all other items required to install the conveyors.

Characteristics Performance characteristics dimensions The conveyors shall have an effective carrying surface of not less than 26 inches wide. The conveyor lines shall have a height of 30 inches from the floor and a width of 30 inches.

Load capacity The conveyors shall have a minimum live load capacity of 80 pounds per foot and a minimum static load capacity of 120 pounds per foot. A safety factor of at least 1.65 to 1 shall be provided.

Deflection under load The rollers, frames, and frame supports shall not exhibit deflections greater than 0.38 percent of the unsupported span length when fully loaded. No components shall exhibit permanent deformation.

Roller motion The rollers shall exhibit only rotational motion and shall not rotate in an eccentric manner during operation.

Weight variations The conveyors shall be capable of transporting items in tote pans and/or in boxes ranging from a weight of 1 pound to 120 pounds.

3.2.1.4. INTERFACES

The in-checking gravity roller conveyor (GRC) systems shall interface with the In-Checking Modular Office as described in Appendix A and the In-Checking Ball Transfer Conveyor as described in Appendix D. The conveyor shall be designed such that the transition between different conveyor sections is a smooth, continuous operation with no jamming, snagging, binding, reorienting, or redirecting of material.

Mechanical characteristics Rollers The conveyor rollers, as a minimum, shall be 1.9 inch diameter steel tubing with 16-gauge wall thickness. The tubing shall be seamless, or with the seam ground flush to the roller surface. The rollers shall be installed such that the tops of the rollers extend a minimum of 1/4 inch above the frame. The rollers shall be located on a maximum of 3 inch centers, and shall provide an even carrying surface in all directions. The rollers shall be easily removable for inspection and maintenance.

Axles Axles shall be a minimum 7/16-inch hex, cold-rolled steel. All axles shall be of the through type and shall be spring loaded for easy removal.

Bearings The conveyor roller bearings shall be nonprecision, antifriction ball type, and shall have a minimum static load rating of 120 pounds, with a rating life of 30,000 hours in accordance with AFBMA STD 9. The bearings may have a nonmetallic retainer. The bearings shall be of the oil-lubricated or dry-running type. The bearings shall be shielded or steel labyrinth sealed on the outside. The conveyor roller bearings shall have separate steel inner and outer rings and shall be designed so that no ball load carrying portions of the rings are of formed sheet steel. The bearings shall turn freely in-hand without sliding contact occurring between balls and races. The bearings shall be securely mounted in the rollers by swaging, or equivalent as approved by the Contracting Officer’s Technical Representative (COTR).

Frames All frames shall be standard 10 foot (or manufacturer's standard) sections of minimum 3-1/2 inch x 1-1/8 inch, 12-gauge formed steel channel, or equivalent as approved by the COTR. The frame members shall be securely fastened by bolts with lock washers or self-locking nuts. The frames shall be rigidly cross-braced (top and bottom) with minimum 1-1/4 inch x 1-1/4 inch x 1/8 inch structural angle or equivalent as approved by the COTR. There shall be a minimum of four equally spaced cross braces per 10 foot section.

Supports Each support shall include two columns, two base plates, and cross bracing. Each base plate shall be drilled or punched to accept at least two anchors. The columns shall be minimum 12-gauge formed steel channel with 1-1/4 inch x 1-1/4 inch x 1/8 inch structural angle cross braces, or equivalent as approved by the COTR. Supports shall have a lockable, continuously adjustable (3 inches up and 3 inches down) height adjustment device. The number of supports shall be sized for the full rated load spaced a maximum of 10 feet apart. Frame joints shall utilize a common support. All supports shall be securely bolted to the frame with minimum 3/8 inch diameter bolts. Anchor bolts shall secure all base plates to the floor. No conveyor shall be supported from walls, ceilings, building supports or any portion of the building except the floor.

3.2.2.10. Guardrail

A fixed guardrail shall be rigidly mounted along the outer edge of all conveyors as shown on Air Force Drawing ATY0B9-01. The guardrail shall extend 4 inches +/- 1 inch above the conveying surface and shall be designed for the impact loads of material being conveyed. Guardrails shall be flared at the exposed ends where packages/tote pans travel from a conveyor section without guardrails to a conveyor section with guardrails. The guardrail shall prevent course packages/tote pans from leaving the conveyor. The guardrail shall be mounted flush end-to-end at the section ends to prevent snag points. The guardrail shall not interfere with normal operations of the conveyor.

End stops Fixed angle stops shall be provided at the ends of the out-bound lanes (located outside each modular office). The end stops shall be bolted to the frame of the conveyor and shall stop conveyed items without causing the items to tumble or be damaged. The end stops shall be fabricated of steel. A roller set at least one inch higher than the roller bed may be used for a stop.

Tote pans The Contractor shall provide 50 tote pans; 15 red and 35 of a contrasting color. Tote pans shall be rectangular and shall be made of molded fiberglass, high density polyethylene, or high density polypropylene. The tote pans shall have a minimum static load capacity of 120 pounds. The tote pans shall not demonstrate permanent deformation after removal of maximum load. The tote pans shall have comfortable, rigid handles which shall allow easy grasping and handling. Tote pans shall be the capable of stacking and 180 degree nesting. Totes shall separate easily when stacked or nested. When stacked, totes pans shall seat into the tote pan below and shall not be easily dislodged or capable of slipping off. Nesting shall be such that five nested tote pans shall not take up any more cubic space than twice the cubic space occupied by a single tote pan. Stacking shall not be accomplished by placing a lid on the bottom tote pan or by bridging the top tote pan's longer side across the bottom tote pan's shorter side. Tote pans shall have a minimum volume of 3,000 cubic inches with a height of 10 + 2 inches, length of 24 + 2 inches and a width of 18 + 2 inches. All tote pans shall be free of sharp edges or corners.

Forklift guard posts Steel pipe forklift guard posts shall be provided as shown on AF Drawing ATY0B9-01. The guard posts shall extend a minimum 3 feet above the floor and shall be installed in such a manner that they do not interfere with the normal usage of the system. The guard posts shall not interfere with the normal movement of the trucks and shall protect the corner upright frame at each aisle entry from an accidental impact with a 4,000 pound capacity forklift. Each forklift guard posts shall be anchored to the floor with a minimum of four anchor bolts in accordance with 3.5.2.3 of the cover PD or equivalent as approved by the COTR.

QUALITY ASSURANCE PROVISIONS

Inspections The system shall be inspected to verify that it meets all the requirements of sections 1, 2, and 3 of this appendix and the cover purchase description. These inspections shall be completed as part of the system checkout test and again as a part of the quality conformance test.

Test The following test shall be performed on the system as part of the system checkout test and again as a part of the quality conformance test.

If the conveyor deflected more than 0.38 percent of the unsupported length when loaded or exhibits permanent deformation it shall be considered unacceptable and fail the test.

If the tote pans/boxes become obstructed or the conveyor exhibits signs of permanent deformation the conveyor shall be considered unacceptable and fail the test.

4.3 Equipment certifications

The Contractor shall provide certification that the following requirements have been met. All certifications shall be provided in accordance with the Contract Data Requirements List.

with a minimum static load rating of 120 pounds with a rating of 30,000 hours in accordance with AFBMA STD 9.

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Tyndall AFB FL, App B - Page 8

IN-CHECKING GRAVITY ROLLER CONVEYORS

Offeror:

-R-

Appendix B, In-Checking Gravity Roller Conveyors, 1 June 2010

This questionnaire shall be completed by the Offeror. All entries to this questionnaire shall be typed. The questionnaire will be used to determine the Offeror's understanding of the requirements and acceptability of the proposed equipment. Please attach product literature/cut sheets for all equipment detailed in this questionnaire and attach any exceptions to the Purchase Description Appendix or recommendations/design alternatives as detailed below.

GRC Manufacturer: _______________________________ Model Number: ________________________________________________

Height of conveyor: ______ inches

Minimum static load capacity: ______ pounds.

Roller wall thickness: ______-gauge GRC rollers will be located on ______ inch centers.

Length: ______ feet Height: ______ inches Width: ______ inches Frame thickness: ______-gauge

Color of tote pans: _____ and _____

EXCEPTIONS/RECOMMENDATIONS/DESIGN ALTERNATIVES

Attach any exceptions taken to the Purchase Description Appendix. Please outline those concerns in detail. Your exceptions will be reviewed to determine acceptability.

Are exceptions taken?

Number of pages attached: ____________________________________

Attach any recommendations or design alternatives you feel may enhance operation, maintainability, or reduce system cost. Your recommendations and design alternatives will be reviewed to determine acceptability.

Are recommendations/design alternatives attached?

Number of pages attached: ____________________________________

We have read the requirements of the Purchase Description Appendix and will comply with all paragraphs as written, with exceptions taken only to those items indicated on the attached exception sheet.

TYPED NAME:

COMPANY NAME:

ADDRESS:

PHONE:

FAX:

Tyndall AFB FL, App B, In-Checking GRC Conveyor - Page 1 of 2

In-Checking Modular Office - Page 1 of McGhee Tyson, App B, In-Checking GRC Conveyor - Page 2 of 2 image1.wmf