A22_KTR_Final_Questions_and_Answers_W912EK17T0050.pdf

Questions W912EK-17-T-0050: Strut Arm Assemblies/Spare Parts

Q1: Storage:

"All assemblies/parts will be stored as spares for future use, therefore the proper protective coatings and factory lubricants must be applied by supplier/fabricator prior to shipment to protect assemblies and parts from corrosion and rust during storage". What is estimated storage time?

A1: Unknown

Q2: Rust Preventive:/ Factory Lubricant:

2a). We intend to use as a Rust preventive: Cosmoline RP-344 "Black" Rust Preventative Spray (Military-Grade) or equal is this acceptable?

A2a): Bid as shown, must meet the requirements of Note 4 on S-101.

2b). We intend to use as a Lubricant. WD-40 Specialist Water Resistant Silicone Lubricant Spray or equal. Is this acceptable?

A2b): Bid as shown, must meet the requirements of Note 1 on S-101.

Q3: Painting:

Certain items example 8" Schedule .XX -16FT-10-1/4 Long; will come from supplier in a semi rusted condition. Do we need to wire brush and paint the exterior Surfaces? If so please specify type of Paint.

A3: See Note 3 on S-101.

Q4: Dimensions:

Nowhere on the drawings or specifications is indicated the following:

General Tolerances or Surface Finish RMS value.

We will use the following, if acceptable:

Tolerances:

Decimal Fractional Angular x = +- .062" 0 to 6" +- 1/64" +- 1/4 Degree xx = +- . 025" 6" to 24" +- 1/32" XXX = +- .005" 24" to 48" +- 3/64" 48" to 84" +- 1/8" 7ft to 17ft +- 1/4 "

General Notes we shall apply.

Break all sharp edges.

No burrs allowed.

Surface Finish:

All Forged/Casting Surfaces = 250-275 RMS.

All Machined Surfaces = 125 RMS or better.

Pipe, Surface Finish as produced by Maker.

Is all the above this acceptable?

A4: See attached amendment.

Q5: Centers Are we allowed to have centers on the below parts, since we must grind diameters it obtain tolerances specified?

- PINPC 168-M

- Bolt PC 168-l

A5: See attached amendment.

Q6: Forging/Casting Do the Forging /Casting get heat treatment such as tempering, or stress relieving?

If so please specify.

A6: Bid as shown.

Q7: PIN KEEPER PLATE PC# 168-J

The thickness of this Plate is specified as 3/4" The slot it nest into on Pin PC 168-M is specified as 7/16" We think slot should be .760 "+.005 -,000 in order for the 3/4" plate to nest properly.

Please check and confirm.

A7: See attached amendment.

Q8: PIN PC 168-M:

Grease fitting not specified, do you requires "grease fitting" be supplied with the Pin?

If so please specify type.

A8: Bid as shown, not required per solicitation documents.

Q9: Threads Drawing specifies:

US Standard 3 threads per inch.

We understand this to be standard "V" thread Is there any other specification associated with this thread as it doesn't seem to be a common thread?

A9: Bid as shown.

Q10: Swivel Joint PC# 168-C and168D Drawing Specifies "Headless Set Screw" but does not specify material> Please clarify.

A10: See attached amendment.

Q11: Small Bolts:

Would you prefer if we supply as Black Oxide Finish or Cadmium Plated?

A11: See Note 2 on S-101.

Q12: Lifting Lugs Since unit is very long over 17 ft ,and Fairly heavy, do you require Lifting Lugs welded to outside of the 8"pipe? If so please specify details.

A12: Bid as shown.

Q13: Epoxy - Belzonia 111.

Epoxy is applied in the field, but is the Epoxy in our scope of supply?

A13: Bid as shown, not required per solicitation documents.

Q14: Are there any additional specifications covering the items to be fabricated from AISI 4140 steel;

heat treated condition or hardness?

A14: Bid as shown.

Q15: Are there any non-destructive testing requirements for the steel forgings (ASTM A668, class E)?

A15: Bid as shown.

Q16: .Bolt 168-W.

See attached: Sketch-C. [img 480] How deep is the 1/4" wide slot? Dimension not show on drawing. Bottom of Bolt is that a Radius or Chamfer? Please clarify.

A16: See attached amendment.

Q17: Other Bolts.

Bolts that tighten against other parts, threaded parts. Etc... Do you require "Nylon' tip so as not to cause Marring or deformation or leave as is?

A17: Bid as shown.

Q18: Loctite Bolts/Nuts.

Loctite ® Thread locker. Red 271™ or equal.

Do you require "Loctite' be applied to all threads at assembly to prevent threads from becoming loose?

A18: Bid as shown.

Q19: "Never seize".

Do you require "Never seize" or equal be applied to all threads at assembly to prevent Galling. etc?

A19: See Note 1 on S-101.

Q20: Fit up Plunger 168-A. Bolt 168-L...[130lbs.]

See Shop Sketches A & B.

[ img482 and img 483]

*From what we see on the Drawings, we are of the option that there is no way to keep the bolt from rotating during the Assembly and the fitting of the Heavy Nut /Jam Nut.

Don't think you can depend on bolt diametrical fit to prevent rotation while tightening?

To prevent rotation, we adjusted the head fit between the Plunger and the Bolt as shown on Sketches

*Radius as shown on Bolt Sketch may need to be applied to limit stress concentration.

*We must grind bolt Diameter in order to achieve dimensions required.

If possible we would like to have Grinding centers.

*We suggest certain tolerances, concentric values etc.

A20: See attached amendment.

Q21: Pipe 8" XX Heavy Wall Pipe.

8.625'' OD X .875" Wall.

A106 Seamless.

Country of Origin: Spain.

Our Purchasing group located the above noted Pipe, can this be used?

A21: Bid as shown.

Q22: Nameplate:

See shop Sketch D [img 484] Is there a requirement for identification of Strut Assembly with drawing number or any other identification number? We can attach on the outside of the 8" Pipe via engraves S/S 304 Name plate intermittently weld to pipe as shown on Sketch.

A22: Bid as shown.

Q23: Shipping:

Spare parts.

Will ship Spare parts need to be packed in a wooden box?

Strut Assembly.

Do you prefer assembly be shipped enclose in a wooden box or would you prefer having unit fasten to a wooden pallet?

Please note:

We intend to ship as follows:

1st shipment= One Strut Assembly and Spare Parts.

2nd shipment= One Strut Assembly.

Transit time approximate 4 days.

A23: Solicitation Scope of Work has been edited to resolve this issue.

Q24: Drawing SW-501-A1. Pipe 168-K.

The diameters on the drawings are reversed.

Drawing indicates:

ID as 6.880" OD as 6.630" When in reality it should read:

ID is 6.630" OD is 6.880" Please clarify.

A24: See S-501-A1, ID as 6.88” and OD as 8.63”

Q25: US standard 3 Threads per inch.

Our understanding is the Pipe ID 8.630" gets threaded.

There is no length of thread specified, we believe it length of thread should be 6-1/8 " + 1/16" - 0.

Please Clarify.

A25: See attached amendment.

Q26: Drawing #S-501-C3; the Cross Head...168-R Drawing indicates as follows:

5-3/4" Diameter x 6" long section which gets "Right hand" Us Standard 3 Threads per inch.

But this is illustrated on the drawing S-301 as threading" into the 6.630 diameter?

Should the 5-3/4" diameter in reality be nominally 6.630" diameter?

Please clarify.

A26: See attached amendment.

Q27: Drawing #S-502-A1 The plunger...168-R Drawing indicates as follows:

6-7/8" diameter x 6" long section which gets "Left hand" Us Standard 3 Threads per inch.

But this is illustrated on the drawing S-301 as 6-7/8 "diameter threading into the 6.630 diameter?

Should the 6-7/8" diameter in reality be nominally 6.630" diameter?

Please clarify.

A27: See attached amendment.

Q28: Page 1 of the SF1449 designates delivery to the ILWW Maintenance Section at Peoria IL 61201, block 15. Page 3 designates delivery to Starved Lock and Dam, Ottawa IL 61350, SOW(E).

Does whichever location have the capability to side off-load the material from a flat trailer?

A28: Solicitation edited to match Scope of Work for Starved Rock delivery.

Q29: The 4140 items, S501-C1-168L bolt & S502-C3-168M pin, do not have a callout for heat treat --assume annealed condition?

A29: Bid as shown.

Q30: Does the customer require the contractor to furnish the epoxy Belzona 1111 for use at field assembly?

A30: Bid as shown, not required per solicitation documents.

Q31: How many of parts 168‐D and 168‐C are required for the total job?

A31: Refer to Scope of Work, item B. General Numbers 6 and 7.

Q32: Are there patterns available for the casting or should this be included in our pricing?

A32: No, patterns are not available. Pricing should include everything necessary to provide complete assemblies as per the SOW.

Q33: Items 4 2‐3" Hex Pc #168‐N

5 2‐3" Lock Pc #168‐P

I do not see them on the prints supplied. Everything else is very well explained. Could you get some clarification on these 2 when you have time?

A33: See attached amendment.

Q34: On the drawings I can find all but the 168‐N and ‐P, could you please let me know where to find the information on these or are they standard off the shelf Hex Nuts and Lock nuts.

A34: See attached amendment.

Q35: The keeper plate #168‐U is ¾” thick and the slot in the pin is 7/16” wide, which is the correct size?

A35: See attached amendment.

Q36: On the 7/8” special bolt #168‐Q would it be allowable to have an undercut under the head?

A36: See attached amendment.

Q37: On the special bolt #168‐Q is the head measurement given across the points of the hex?

A37: Bid as shown.

Q38: Is the 5/8” tapped hole in the plunger #168‐A a through hole or blind hole?

A38: See attached amendment.

Q39: ARE THERE CASTING PATERNS AVAIL. FOR 168R, 168D,168C, 168A?

A39: No.

Q40: CAN THE PIPE BE DUAL CERT A106B/A53 GRB?

A40: Bid as shown.

Q41: WHAT CONDITION IS THE 4140 IN FOR 168L, 168M?

A41: Bid as shown.

Q42: A307 SPEC STATES THAT A36 MATERIAL CAN BE USED, IS THAT WHAT YOU EXPECT?

A42: Bid as shown.

Q43: CAN WE PURCHASE A HIGHER GRADE BOLT WHERE YOU CALL OUT AN A307 IF A307 IS NOT

READILY AVAIL?

A43: Bid as shown.

Q44: Regarding the bushings 168S & 168Z to be assembled into the S503 A1 and A3 swivel joints, can continuous cast bronze ASTM B505 be used instead of centrifugally cast ASTM B271? The B505 material is just as homogenous as the B271? Relevant drawing attached for your reference (Bush Dwg).

A44: See attached amendment.