Fortis_Design_Brief_Appendix_D_06_28_21.pdf
PDF 1 MB Posted
- Attached to
- Fabrication & Testing of FORTIS 8-Axle Railcar
- Solicitation number
- 89243222RNE000025
About this file
This document includes a design brief appendix and related federal contract opportunity solicitation. The design brief appendix provides calculations demonstrating that the proposed FORTIS 8-Axle railcar design meets Association of American Railroads brake ratio requirements for loaded and empty conditions. The railcar would carry a single spent nuclear fuel transport cask.
The related federal contract opportunity solicitation from the Department of Energy National Nuclear Security Administration seeks fabrication and testing of a prototype FORTIS 8-Axle Railcar. Offerors would be responsible for procuring documentation from the AAR and conducting testing required by AAR S-2043 to receive approval for the railcar design to operate. The railcar prototype must comply with the AAR's standards and practices. The contract would include fabricating and testing the railcar design to verify compliance with AAR S-2043 requirements.
View the file
Other files
Show all 35
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
FORTIS 8-AXLE SNF RAILCAR
DESIGN DOCUMENTATION
APPENDIX D – BRAKE SYSTEM CALCULATIONS
June 2021
AIR BRAKE FORCE
REQUIREMENT FOR LOADED AIR BRAKE RATIO AS PER AAR S-401 TABLE 4.1
BRAKE ANALYSIS CALCULATION BASED ON ELLCON NATIONAL 125T MODEL 8500
(DWG #TMB-693-L) TRUCK MOUNTED BRAKES SYSTEM.
GROSS RAIL LOAD (INPUT) - 630,000 LBS
BRAKE FORCE /AXLE @ 65 PSI (AS PER DWG) - 9167 LBS
BRAKE FORCE / TRUCK - 18334 LBS
TOTAL BRAKE FORCE - 73336 LBS
LOADED BRAKE RATIO - 11.6%
THE LOADED BRAKE RATIO 11.6% IS WITHIN THE RANGE REQUIRED BY AAR S-401.
REQUIREMENT FOR EMPTY AIR BRAKE RATIO AS PER AAR S-401 TABLE 4.1
BRAKE ANALYSIS CALCULATION BASED ON ELLCON NATIONAL 125T MODEL 8500
(DWG #TMB-693-L) TRUCK MOUNTED BRAKES SYSTEM. (W/50% EMPTY LOAD
VALVE)
EMPTY RAIL LOAD (INPUT) - 150,000 LBS
BRAKE FORCE /AXLE @ 32 PSI (AS PER DWG) - 4584 LBS
BRAKE FORCE / TRUCK - 9168 LBS
TOTAL BRAKE FORCE - 36672 LBS
EMPTY BRAKE RATIO W/ 50% EMPTY LOAD VALVE - 24.5%
THE EMPTY BRAKE RATIO 24.5% IS WITHIN THE RANGE REQUIRED BY AAR S-401.
1216 10 9 8 7 6 5 4 315 11121314
A
B
C
D
E
F
G
H
I
J
S.A
S.A
10"
10"
HANDBRAKE
GROUP O
4475#
6887#
3271#
3271#
2650#
23823#
21610#
45433#
125T TRUCK
36801#
125T TRUCK
17504#
19296#
6006#
3271#
7415#
3262#
5 11/16"
18 7/8"
5 7/8"
19 1/16"
13 3/16"
5 7/8"
13 3/16"
3 3/4"
4 3/4"
4 3/4"
3 3/4"
5 11/16"
18 7/8"
13 3/16"
5 7/8"
19 1/16"
5 7/8"
13 3/16"
31238#
25303#
GROSS LOAD=630,000 LBS
TOTAL BRAKE FORCE=82,234 LBS
BRAKE RATIO-PERCENTAGE OF GRL=11.10%
TRUCK EFFICIENCY FIGURED AT 85%
PISTON TRAVEL AT 2 3/4"
2944#
LR=1
3625#
PROJECT
DOE
TITLE
8AXLE FLAT CAR HANDBRAKE
DIAGRAM
DRAWN BY:
APPR. BY:
SG
DATE:
DATE:
SHEET:
REV:
1 2/20/2020
CHAIN TRAVEL CALCULATION
NO. TRUCK
TRAVEL (IN.)
1 1ST TRUCK 8.09"
2 2ND TRUCK 8.09"
TRUCK TOTAL 16.18"
SLACK 5"
TOTAL TAKE-UP 21.18"
3.57" TRAVEL
@ 2.75" PT
3.57" TRAVEL
@ 2.75" PT
8.09" TRAVEL
@ 2.75" PT
8.09" TRAVEL
@ 2.75" PT
16.18" TRAVEL
@ 2.75" PT
EFFICIENCY LOSS :
5% LEVERS,
10% SHEAVES,
0% LOSSES AT TRUCKS
s-473
AAR Manual of Standards and Recommended Practices Brakes and Brake Equipment
BRAI{E EQr}IPMET{r-APPLTCATTON FORM FOR AAR APPROVAL OF NEW
AND I]NTRIED FREIGI{T CARS
Standard s-473
Adopted: 1978; Revised: 2OO2r 2003
Complete this form and submit it to the AAR for the certification of any new and unproven car design.
FI)RM 600
APPLICATION FOR APPROVAL
BR.AI(E EQUIPMEI{T INFOBMATION
Car Builder: FiIe or AAR
Application No.:
Brake Type {truck mounted or conventiona})
1. Lightweight of car (estimated in lb)
2. Nominal capacity in pounds (in gallons for tank cars)
3. Rail load limit of car (ib)
4. Braking ratia (ref. AAR Standard 5-401)
a. Braking force to light weight (actual) b- Braking force to rail load lirnit (actuai)
c. Assumed effi.cieacy (theoretical)
5. Total braking force (air) (theoretical) (Ib)
6. Total braking force (hand brake) (theoretical) (lb)
a. Hand brake force to rail load limit (% net)
b. T5pe hand brake (AAR type)
c. Bell crank or sheave rvheel chain length
d. Bell crank t5pe or sheave wheel
e. Assumed efficiency
7. Location and group type of slack adjuster (if used) {ref. AAR Standards
S-419, 5-420, S-421, and 3-422 and Recommended Practice BP-400)
8. AAR brake shoe designation
9. Size and number of brake cylinders l0.Detailed location of angle cocks rvith reference to AAR Standards S-424, S-425, 5-426, S-427, 5-428, and 5-472 l1.Type brake control valve 12.A-1 reduction relay or vent valve (if required) 13.T;rpe empty load or load. compensating brake (if used)
Refer to brake arrangement drawing(s) o4lz+ /zor^ Type of car, Flaj Ca- Date:
The brake equipment information listed below is submitted as initial application for approval.
TM8
/ 5A 6Ta Afu oa-z 6sa*o@
% Net 2+ ,5 7o Net
?o/, Ttu? B, .2q hlF .
q
+s ssa tl.tb
SFzsape--u:?*
ABpx - t-
APPROYED
ou2010 E IS-4731 423
12 / 30 / 2020
Appendix_D_Front
File details come from the government source that posted it. Updated .