Amdendment_0018.pdf

ACQR5489062

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this Amendment is:

1. To provide the Design to Budget amount for Project P199 - $118,250,000.

2. To provide PPI responses.

3. A non-escorted site visit is available on either 10/3/19 or 10/8/19. See continuation page for details.

1. CONTRACT ID CODE PAGE OF PAGES

1 16

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 26-Sep-2019

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X N4008518R0644

X 9B. DATED (SEE ITEM 11)

08-May-2019

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

26-Sep-2019

CODE

NAVFAC MID ATLANTIC

ACQUISITION CORE

9324 VIRGINIA AVENUE

NORFOLK VA 23511-3095

N40085 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N4008518R0644

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

18 - PPI RESPONSES

PRE‐PROPOSAL INQUIRY ATTACHMENT (5.3)

Solicitation Number: N40085‐18‐R‐0644 AMENDMEN T 0018

Contractor Name: 65 ‐ 112 Contractor POC (Name and email): PDF ATTACHED

HERETO

Instructions: DO NOT submit in PDF format. DO submit as a word document

Contrac tor PPI#

Section of RFP or Page Number

Paragra ph Referen ce

Drawi ng Numb er

Question RESPONSE

65 P‐235 A‐501 and

SF‐301

(Fire Pump House

Detail A2 on A‐501 shows a framed‐out soffit.

Detail 3 on SF301 does not show this framing. Is this a light gauge framed soffit? If so, please provide size of studs, tack, spacing, etc..

UPDATE:

See Section 05

40 00 COLD‐

FORMED METAL

FRAMING

attached in amendment.

Detail A2/A‐501 and detail C1 and C3/S‐301 show a joist extension at deck underside.

Detail A2/A‐501 shows additional cold formed framing connected to the exterior wall to frame out the soffit overhang.

Additional information regarding the cold formed framing at overhang is to be included in upcoming amendment.

68 P‐235 ‐ 33 6963 13

2.2.1 Spec 33 63 13 section 2.2.1 Carrier Pipe

Insulation Thickness ‐ the insulation thickness listed in Table 1 and Table 2 do not take into account the added benefit of the 1" thick polyurethane foam insulation applied to the OD of the conduit, as indicated in paragraph 2.1.7. It is recommended that the specification section be amended to include the carrier pipe insulation thickness and conduit thickness that was previously specified in project: Repairs and Improvements to Steam Distribution Systems N40085‐15‐D‐4709, Task Order 0005 (see attachment). This will decrease conduit size, maintain consistency between projects, and keep conduit temperature maintained at appropriate temperatures to reduce internal corrosion.

Please confirm that this table is applicable to this project.

UPDATE:

See amendment 17 for list of revisions and additions.

79 Part 6‐ Chapter K and Part 3‐ Chapter

6/ESR A10

Part 6‐chapter K, Page 7 of the geotech report by GER notes that a underslab vapor mitigation system might need to be considered for either or both building sites to prevent upward migration of volatile vapors. Part 3 ‐ Chapter 6/ESR A10‐ page 4 seems to note to only provide a vapor barrier under the hangar. Please verify a vapor barrier is only required and not a complete vapor intrusion mitigation system consisting of vent pipes, fans, etc..

Requirement is to provide a chemical vapor barrier system under the entire maintenance hangar facility to limit chlorinated solvents and semi volatile organic compound permeations to below life time exposure limits.

Minimum acceptable requirements are provided.

80 Part 3‐ Chapter 4.1 Hangar‐ page 7 and Part 3‐ Chapter

6/ESR B20

Per 4.4 “Exterior Character” notes the façade should be utility brick and CMU Water table (split face or ground face) for both the Hangar and Paraloft building. Part 3‐Chapter 6/ESR B201001 “Exterior Closure” notes the exterior materials should be split and smooth face. Please verify Part 3‐Chapter 4.1 should be followed for the exterior façade make‐up consisting of utility brick w/ split or smooth face water table.

Provide façade make‐up consisting of utility brick w/split face water table.

81 P235 There is no dedicated fire protection line to the paraloft facility as part of the P235 project.

All fire protection

Where is the connection for fire protection supposed to come from?

service to existing and new buildings (with the exception of the hangars) will be supplied off the new domestic main. The domestic/FP main and stub out for the P199 paraloft are shown on Sheet

CU144.

82 Section D509090

RFP Section D509090 “Other Special Systems and Devices” calls for combination 400Hz/270VDC power. Is it acceptable that output power for 400Hz configuration is 200/115Volts?

The 400 Hz output to support some of our older aircraft must be

200Y/115VAC

output per UFC 4‐211‐01, “Aircraft Maintenance Hangars”, paragraph 3‐ 7.7.1.

83 Section G4090

RFP Section G4090 "Other Site Electrical Utilities" states that every sunshade shelter is required to have a 400Hz/270VDC Dual Power Supply. Please Confirm that all (28) twenty‐eight Sunshade Shelters are required to have these units (UFC allows hangars to split one converter per two planes inside a hangar bay).

Shaeffer All sunshades must to be provided with a combination power supply at each shelter per the RFP.

84 Section G4090

For the Dual Power converters for the Sunshade Shelters and inside the Hangar Squadrons, what is the expected quantity of aircrafts that will be maintained at any given time? Shall we assume that all 28 (& 12 inside) will be in use at one time, or shall we assume a lesser quantity?

Shaeffer This is a design question is best answered by the Activity.

While it is possible that there would be a plane in each maintenance bay or shelter, it would be highly unlikely that all connected loads at each plane point of service would be in use pulling rated load for a sustained period of time.

The DOR may assign a prudent demand/coincid ent load per the FRD, applicable UFCs, and design experience.

85 Part 3‐ Chaper 5.2‐ 01 Level Room

Requireme nts‐Page 69

Part 3‐Chaper 5.2‐01 Level Room Requirements‐ Page 69, Elevator shaft is to be Cast‐In‐Place Concrete. Please verify this can also be CMU/Masonry construction? The same is also noted for the “elevator equipment room”

Reinforced CMU/Masonry is acceptable.

86 P‐235 CU113

FX501

Drawing FX501 shows an 8" domestic water supply, drawing CU113 shows a 12" DIP water main supply line. Please confirm the correct size of pipe

PENDING

87 P‐235 CU113

FX501

FX501 shows a riser diagram with piping between the fire pump house and the water tanks.

Nothing is shown on the civil plans between the tanks and pump house. Please provide a plan view showing the pipe layout to confirm length and depth of piping.

PENDING

88 P‐235 CS113 On drawing CS113, and throughout the Site Plans, Work Note 4 calls out to "Replace Chain Link Fence Following Utility Installation. Match Existing Fence Height and Material." The note shows up in several places, but it does not identify the if a short section of fence will need replaced or if all of the fencing on that plan will need to be replaced. Please identify where fencing will need to be replaced.

PENDING

89 01 91 00.15 (P235 & P199)

The Commissioning specification 01 91 00.15 for the P235 Utility Modernization project paragraph

1.1 reads "Employ the services of an independent Commissioning Firm." Section 01 91 00.15 paragraph 1.1 for the P199 Aircraft Hangar project reads "The Government will employ the services of an independent, commissioning firm acting as CxA." Please confirm if the Commissioning will be by a third party or by the government for both the P235 project and the P199 project.

Commissioning for P235 will be done by a 3 rd party paid for by the KTR.

Commissioning for P199, the government will employ these services.

90 P‐199 B3010 1.2.3 requires a 5 year contractor warranty on Provide a 5 year

01 the SSMR. This is in addition to the 2 year installer warranty, and 20‐year MFR warranty.

The contractor’s bonding company will charge the project a premium to provide this 5‐year warranty, and any repairs will still ultimately be done by the installer or MFR, who are already providing their own extended warranties. Can the Gov’t eliminate the 5 year contractor warranty (since there is a 20 year NDL mfr warranty), or switch it to a 5 year installer warranty to eliminate the unnecessary cost (similar to 07 41 13 in P‐235 specs).

contractor warranty on the SSMR as required in ESR B30 Roofing for P199.

91 Amendmen t 2

FAR

52.211‐

PPI 15 in Phase 1 requested the $105,850/CD Liquidated Damages be reduced. The answer was no. Since those damages were calculated on the grand total of the P199 and P235 IGE’s, it is bringing the burden of both projects onto one another. To make the LD’s more reasonable, please confirm if two substantial competition milestones can be created for the project (one for P‐199 and one for P‐235 both at 934 CD’s), and if the LD’s can be subdivided by the IGE for each project.

See Amendment 0017 – Liquidated damages revised to reflect separate LD’s for each project.

92 RFP Project Staff

Both project spec books have requirements for full time QCM, SSHO, and Superintendents. Are these projects considered one project or two projects (i.e. is one SSHO required full time for the entire job, or is one SSHO required for P199 work and a separate required for P235 work).

The same would go for QCM and Superintendent.

These are considered two projects.

93 RFP Project Staff

Both project spec books have numerous references to a Project Manager, but don’t specifically say if a PM is a required full time position on the project. Given the complexity of the P199 and P235, please confirm a full time PM is required for both projects.

These are considered two projects.

94 P235 Vol 3 –

LP102

Note 1 on LP102 says, “ALL AREAS WITHIN

PROJECT LIMITS NOT DESIGNATED AS PLANTED

SPACE TO BE CENTIPEDE SOD.” Please show a hatched area that that is to be sodded or provide a quantity of centipede sod that will be required in the planting schedule on L‐501.

All disturbed areas that are not paved or planted space shall be sodded.

Total sod areas should be determined based on drawings.

95 P199 Part 3 The opening paragraph for the hangar in 1.0 notes that minimal use of metal panels is allowed on the Hangar. Special Challenges 2.6.13 says use all masonry and translucent on the façade (and that metal and IMP is not desired).

01 shops and 02 level office should have reinforced masonry

B201001 agrees with this and calls for the use of masonry and translucent on the hangar with no metal panels. The most common and cost effective means of enclosing the expansive hangar bay space is with insulated metal wall panels. Please confirm the Gov’t does not want any metal wall panels on the hangar façade (understanding this will have a significant cost impact on the project). If this is confirmed, please describe the materials to be utilized on the face of the bottom rolling steel hangar doors (the door MFR only provides the rolling frame, and there is a secondary applied skin to the frame … typically insulated metal panels to match the façade). Also confirm that the entire façade above the hangar doors (facing the flight line) can be translucent panel, as suspending brick over a 300’ wide clear opening would be a significant weight to accommodate and would drastically change the engineering of the building.

exterior walls.

The front elevation and side elevation should have reinforced masonry up to the height of the rolling door.

The rolling doors would be a combination of steel panels and translucent panels. Above the rolling door height can have a combination of insulated metal panels and translucent panels for daylighting and economy.

96 P199 01 35 13.05

Paragraph 3.1.2 notes that the Gov’t can shut down operations at any time for AOA related items. Please confirm that unforeseen shutdowns that delay the projects critical path, will be treated as a differing site condition.

Normal hours of operations are indicated.

Government delays as a result of AOA will be evaluated at the time of occurrence.

97 P199 01 45 00.05

Please confirm the Secure Space Standards QC Specialist can have other duties, as long as they are given sufficient time to fulfill the duties listed in 1.4.4.

Confirmed.

98 P235 01 45 00.00

1.5.6 notes that separate QC specialists are required, but then doesn’t list out the specialists.

Please confirm no additional specialists are required.

No additional QC specialists are required in Specification Section 01 45

00.00 20.

99 P235 01 45 00.00

1.5.8 is requesting a submittal reviewer. Please confirm this position can have other duties on the project as long as they are given sufficient time to fulfill the duties listed in 1.5.8.

Submittal reviewer can have other duties.

100 LP102‐

LP136

Per note #1 of the General Notes on all Landscape Drawings (LP102‐ LP136) “All

All disturbed areas that are

Disturbed Areas within project limits not designated as planted space to be centipede sod”. There are no notations on the drawings for sod, but there are a few call outs for grass here and there. Please notate which areas are to be newly sodded and what areas are existing grass.

not paved planted space shall be sodded.

There are no areas to be permanently seeded.

101 LP102‐

LP136

Looking over the landscaping plans for P235 and I see that there is sod and rock that needs to be installed. On the plans for landscaping (LP102 ‐ LP136) I cannot find a key that shows which areas are sod and which ones are rock. There are different shaded areas but they do not annotate what they are. Please advise.

There are no rock beds on the drawings.

All disturbed areas that are not paved or planted space shall be sodded.

102 Please confirm if it is acceptable to use a single panel translucent panel system in leu of a translucent sandwich panel system, if it still can meet the requirements.

Provide translucent sandwich panels

103 Please confirm if a Polycarbonate wall system is acceptable to use for a translucent panel system.

Translucent Polycarbonate sandwich panels that meet all insulation, structural, ATFP, fire protection and impact requirements are acceptable

104 P235 Dwg G120 includes utility outage requirements and maximum durations for the project. The table included on this page does not show any requirements for electrical, telecommunications, or fire alarm / mass notification outages. Should it be assumed none are anticipated? If they are anticipated, please provide the maximum outage duration requirements for each system listed above at each building affected.

Telecommunica tions can not go down during the project other than a cable television outage. Phones and Marine Corps networks shall remain operational throughout the project.

105 RFP Part 3, Section 6, Paragraph D303001 Requires “The cooling load for each facility must be served by 1 chiller providing 100 percent of the load”. Please confirm that the same, single chiller will serve both squadrons.

PENDING

106 RFP Part 3, Section 6, Paragraph D303001 Requires “The cooling load for each facility must be served by 1 chiller providing 100 percent of the load”. Was the intent of this requirement to

PENDING

provide 1 chiller for the Hangar building and a separate chiller for the Paraloft Building? The cooling load for the Paraloft building is quite low and below the range where chillers are typically installed. The Paraloft building is also 1,000s of feet from the main Hangar building, so chilled water distribution from the chiller serving the Hangar building would not be appropriate. Is it acceptable to provide one chiller for the Hangar building, while the Paraloft building is cooled through a DX split system with a condensing gas furnace?

107 RFP Part 3, Section 6, Paragraph D309090 1.3 Requires HVAC equipment serving the Secure Space must be located outside of the Secure Space. It is clear that AHU’s, pumps, exhaust fans, and other central HVAC equipment must be located outside of the Secure Space Boundary.

Please confirm that terminal equipment such as zone control variable air volume boxes (which are low maintenance) are permitted to be located in the spaces they serve.

Bid per RFP.

108 RFP Part 3, Section 6, Paragraph D309090 1.4 and

1.5 Include a requirement for redundant CRAC

units to serve the Secure Space SOU Server Room. Can you provide an estimate for the electrical demand or associated cooling demand generated by the servers?

Electrical loading and cooling demand will be determined during design.

109 What is the condition we should leave the areas created after building demolition if the area the demoed building occupied is not needed completely for apron or new building pad?

Should it be left as grass or concrete. If concrete, what should the concrete be rated for?

If the question is in reference to the area left as grass from the demo of building 130.

This project will provide concrete pavement and circulation extended out to the wash rack and will infill that part of the former Building 130 demo area from 6 th Ave to the existing apron area.

P197 (adjacent future hangar project) is expected to

“mirror” the P199 site plan and will have a wash rack adjacent to P199’s and would fill in the rest of the former footprint. The concrete design shall be for the traffic that will access the areas. Refer to RFP Part 6 G20 for roadway and aircraft pavements.

Building areas 140 and 3769 may be grass.

110 Is apron lighting required at the exterior of the facility

The modification of all airfield lighting and general lighting around the new Hangar is included in this RFP. Bid project accordingly.

See ESR G4020 site lighting and all subparagraphs.

See UFC 3‐530‐ 01, paragraphs 5‐9.1 Airfield (Hangar) and 5‐

9.2 Airfield

(Apron) for more design guidance.

111 Is aviation obstruction lighting required at the hangar facility? If required, will the lighting control system be a standalone system or will it integrate with other building control systems?

Will the lighting control system be tied into an installation‐wide system?

Provide aviation obstruction lighting in accordance with

UFC 4‐211‐01

paragraph 3‐

7.10.2. Most, if

not all, Hangars along the flight‐ line have obstruction lights. Past experience at MCAS Cherry Point dictates that the obstruction lights are all standalone controls.

Coordinate control and type with the activity and airfield operations.

112 P235 underground telcom and existing underground telcom symbols appear exactly the same. Please differentiate these symbols.

Line weights for existing and new work are different. Existi ng lines should be much lighter in weight and appear lighter in color on printed drawings. This is typical for all existing equipment on telecommunicat ions drawings.

1565553 Amendment 0018 Summary of Changes:

1. Inclusion of Specification Section 05 40 00 Cold Formed Metal Framing for P235

2. Update and Modifications to Mechanical Piping and Distribution Specifications for P235.

3. Provide Thermal Performance Testing Requirements to Section 33 63 13 EXTERIOR UNDERGROUND SYSTEM

DISTRIBUTION

4. Update to PPI Nos. 65 and 68.

5. Provide PPI responses

P199 – PART 3 PROJECT PROGRAM

ESR D50, section D501002 “Service Entrance Equipment”

In the last paragraph ADD “In addition to the interior and exterior lighting sub‐metering, add the requirement for electrical monitoring of the HVACR and receptacle circuits in accordance with ASHRAE 90.1 – 2013 paragraph 8.4.3 “Electrical Energy Monitoring” and all sub‐paragraphs.”

P235 ‐ PROJECT TABLE OF CONTENTS

Section 05 40 00 COLD‐FORMED METAL FRAMING, is added to the Project Table of Contents.

This Section accompanies this Amendment.

P235 ‐ SECTION 23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS

3.2.1.6 Pipe Insulation Material and Thickness ‐ Table 2

Insulation thickness for Cold Domestic Water Piping, Markup Water & Drinking Fountain Drain Piping shall be flexible elastomeric 1” for pipe sizes less than 4”.

P235 ‐ SECTION 23 81 00.00 20 UNITARY AIR CONDITIONING EQUIPMENT

1.1 REFERENCES

Add “ASHRAE 90.1 (2013) Energy Standard for Buildings Expect Low‐Rise Residential Buildings”

P235‐ SECTION 33 61 13.19 VALVES, PIPING, AND EQUIPMENT IN VALVE MANHOLES

Add 2.14.5 Pipe Supports “2.14.5 Pipe Supports Provide pipe supports in accordance with MSS SP‐58. Galvanize all pipe supports, including structural cross support members. Chains, straps, or single point supports are not allowed.”

P235 ‐ SECTION 33 63 13 EXTERIOR UNDERGROUND SYSTEM DISTRIBUTION

1.1 REFERENCES

ADD “ASME BPVC SEC IV (2017) BPVC Section V – Nondestructive Examination”

Add “ASTM E2700 (2014) Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays”

1.2.11 Testing Firm Qualifications

REPLACE ”A Certificate of the Testing Firm Qualification from the independent testing firm or firms, not later than 7 days after notice to proceed, certifying that: weld examination methods and procedures, and the interpretation of radiographic films will be performed in accordance with ASME B31.1; the firm intends to utilize the proper film exposure, techniques, and penetrameter to produce density and geometric sharpness in sufficient clarity to determine presence of defects; and that all radiographic films will be reviewed and interpreted, and reading reports signed, by not less than a Certified American Society for Nondestructive Testing Level III Radiographer.”

WITH “A Certificate of the Testing Firm Qualification from the independent testing firm or firms, not later than 7 days after notice to proceed, certifying that: weld examination methods and procedures will be performed in accordance with ASME B31.1. Phased Array Ultrasonic Testing (PAUT) in accordance with ASME BPCV SEC V. All work must be overseen and signed off by not less than a Certified American Society for Nondestructive Testing Level III PAUT.”

1.2.12 Welds

REPLACE “radiographically” with “ultrasonically”

1.3.1 Scope

DELETE “cathodic protection system (where required by this specification)”

1.4.3 Heat Distribution System design

DELETE “Also, if applicable, type and details of cathodic protection system to be used.”

1.6 SUBMITTALS

ADD “SD‐06 Test Reports Examinations, Inspections, and PUAT Tests; G”

2.2.1 Carrier Pipe Insulation Thickness

DELETE Tables 1 and 2 and REPLACE Tables 1 and 2 with the following.

Table 1 – Minimum Pipe Insulation Thickness (inches)

For Steam (16 to 125 psig)

INSULATIONS For Drainable/Dryable Systems

Nominal Pipe Diameter (Inches)

Mineral fiber

1 1.5

1.5 1.5

2 1.5

2.5 1.5

3 1.5

4 1.5

5 2

6 2

8 2

10 2

Table 2 – Minimum Pipe Insulation Thickness (inches)

For Condensate Return

INSULATIONS For Drainable/Dryable Systems

Nominal Pipe Diameter (Inches)

Mineral fiber

1 1.5

1.5 1.5

2 1.5

2.5 1.5

3 1.5

4 1.5

5 2

6 2

8 2

10 2

2.3.1 Steam Pipe

REPLACE …“Factory fabricated piping sections as part of an expansion loop or bend shall have all welded joints 100 percent radiographed inspected in accordance with ASME B31.1. Factory fabricated piping sections as part of an expansion loop or bend shall have all welded joints 100 percent radiographed inspected in accordance with ASME B31.1.”

WITH …“Factory fabricated piping sections as part of an expansion loop or bend shall have all welded joints 100 percent ultrasonically inspected in accordance with ASME B31.1.”

2.3.1.1 Condensate Pipe

REPLACE …“Factory fabricated piping sections as part of an expansion loop or bend shall have all welded joints 100 percent radiographed inspected in accordance with ASME B31.1. Radiographs shall be reviewed and interpreted by an ASNT Certified Level II radiographer, employed by the testing firm, who shall sign the reading report.”

WITH …“Factory fabricated piping sections as part of an expansion loop or bend shall have all welded joints 100 percent ultrasonically inspected in accordance with ASME B31.1.”

2.3.1.2 Joints

REPLACE …“Dye penetrant inspection may be used in place of 100 percent radiographic inspection for pipe sizes 2 inches and below.”… WITH …“Dye penetrant inspection may be used in place of 100 percent ultrasonic inspection for pipe sizes 2 inches and below.”…

2.3.2 Fittings

REPLACE “All welds in factory fittings shall be 100 percent radiographic inspected. All radiographs shall be reviewed and interpreted by a Certified ASNT Level III radiographer, employed by the testing firm, who shall sign the reading report. The Contracting Officer reserves the right to review all inspection records, and if any welds inspected are found unacceptable in accordance with ASME B31.1, the fitting shall be removed, replaced, and radiographically reexamined at no cost to the government.”

WITH “All welds in factory fittings shall be 100 percent ultrasonically inspected. The Contracting Officer reserves the right to review all inspection records, and if any welds inspected are found unacceptable in accordance with ASME B31.1, the fitting shall be removed, replaced, and ultrasonically reexamined at no cost to the government.”

2.3.2.2 Socket‐Welded

REPLACE “Forged steel, ASME B16.11, 2000 pound class will be used for pipe sizes 2 inch and below. Dye penetrant inspection may be used in place of 100 percent radiographic inspection of welded fittings for pipe sizes 2 inch and below.”

WITH “Forged steel, ASME B16.11, 2000 pound class will be used for pipe sizes 2 inch and below. Dye penetrant inspection may be used in place of 100 percent ultrasonic inspection of welded fittings for pipe sizes 2 inch and below.”

3.4.9 Radiographic Testing

DELETE section in its entirety.

ADD “3.4.9 Phased Array Ultrasonic Testing (PAUT) An approved independent testing firm regularly engaged in PAUT testing shall perform PAUT examination of 100 percent of the field welds in the carrier piping of direct‐buried systems in accordance with ASME B31.1. Furnish a set of images showing each weld inspected, a reading report evaluating the quality of each weld, and a location plan showing the physical location where each weld is to be found in the completed project, prior to installing casing field joints, backfilling and hydrostatic testing. All PAUT images shall be reviewed and interpreted by a Certified American Society for Nondestructive Testing Level III professional certified in PAUT technique, employed by the testing firm, who shall sign the reading report. The Contracting Officer reserves the right to review all inspection records, and if any welds inspected are found unacceptable they shall be removed, rewelded, and ultrasonically reexamined at no cost to the Government.”

3.5.3 UHDS Manufacturer’s Representative Responsibilities

Add “k. Operational tests”

P235 ‐ SECTION 33 63 13 EXTERIOR UNDERGROUND SYSTEM DISTRIBUTION

3.9 THERMAL PERFORMANCE TESTING

DELETE “Text” and ADD the following:

“The purpose of this section is to provide a basis for assuring the thermal performance of a heat distribution system procured under this specification. The equipment and procedures specified herein shall assure acceptable thermal performance upon installation. All materials and procedures described for this test shall be included as deliverables of the construction contract for the system unless otherwise noted. The methods used for the prescribed thermal performance measurements have been verified by several successful field studies. This work has clearly demonstrated that methods based on temperature measurements at the soil/casing interface are accurate, reliable, and repeatable.”

3.9.1.1 Casing Temperature Measurement

Before backfilling, temperature sensors shall be installed by adhesion with epoxy (epoxy used to adhere to exterior of casing shall be suitable to 500 degrees F) to the exterior of every other field closure after welding, once the field coating has been applied and cured. A sensor shall be adhered with epoxy to the coated casing at the midpoint of every other pipe section between field joints, but no closer than 5 feet to any guide on the interior of the casing.

After the sensors have been adhered to the casing, two complete wraps of duct tape shall be used to secure and protect the sensor. In all cases the radial position of the sensor shall be at 45 degrees from the top of the conduit at either the 1:30 or 10:30 position. The position chosen shall be the position facing away from the adjacent heat distribution system pipe, if present. All sensors shall be type T thermocouples in accordance with ISA MC96.1, copper constantan 20 gauge thermocouples, made from special limits grade thermocouple wire (accuracy plus or minus 0.75 degrees F), with each conductor insulated and an overall jacket on all conductors. Insulation on the thermocouple wires shall be suitable for service at temperature of carrier pipe. Wires and thermocouples exterior to the casing and penetration thru outer jacket insulation and cover shall be protected and/or insulated to protect against corrosion. No splicing or other connections will be allowed in the thermocouple wire between sensor location and termination point. Each An approved independent testing firm regularly engaged in radiographic testing shall perform radiographic examination of 100 percent of the field welds in the carrier piping of direct‐buried systems in accordance with ASME B31.1. Furnish a set of films showing each weld inspected, a reading report evaluating the quality of each weld, and a location plan showing the physical location where each weld is to be found in the completed sensor shall be shown with a special symbol on the detailed design layout drawings and shall be identified by a number and/or letter code, starting from the upstream manhole.

3.9.1.2 Carrier Pipe Temperature Measurement

Carrier pipe temperature shall be measured within the manhole where the terminal equipment will be located.

Carrier pipe temperature shall be measured by a sensor adhered with epoxy, suitable to 500 degrees F directly to the exterior of the carrier pipe. Sensors shall be type T thermocouples in accordance with ISA MC96.1, copper constantan 20 gauge thermocouples, made from special limits grade thermocouple wire (accuracy plus or minus

0.75 degrees F), with each conductor insulated and an overall jacket on all conductors. Insulation on the thermocouple wires shall be suitable for service at temperature of carrier pipe. No splicing or other connections will be allowed in the thermocouple wire between sensor location and termination point. The location of this sensor shall be at either the 1:30 or 10:30 position. At the location of the sensor the carrier pipe shall be insulated to match adjacent carrier pipe insulation. This insulation shall extend to provide continuous insulation of the carrier pipe, install metal jacket to match adjacent on insulation. Thermocouples and associated wiring shall not void outer jacket insulation and casing corrosion protection capability.

3.9.1.3 Terminals

The wires from each casing or carrier pipe temperature sensor shall be extended into the nearest manhole and terminated in a NEMA ICS 4 type 4 waterproof enclosure, of suitable size, mounted near the top of the manhole at a location near the manhole entrance so as to be accessible without entrance into the manhole, where possible.

The termination of the sensor wires shall be with a connector type OMEGA Miniature Jack Panel (MJP‐*‐*‐T) or exact equal. The thermocouple jack panel shall be mounted to the back plate of the NEMA ICS 4 type 4 enclosure.

The temperature sensors shall be labeled at their termination within the NEMA ICS 4 type 4 enclosure; a drawing showing the location of each temperature sensor shall be laminated and attached to the inside of the NEMA ICS 4 type 4 enclosure. The manufacturer's operating casing temperature factors for each temperature sensor location shall be laminated to a card attached to the inside of the NEMA ICS 4 type 4 enclosure. All temperature sensors shall be verified as operational by an independent laboratory, hired by the Contractor, after backfilling is complete but before the system is accepted.

3.9.2 Initial Thermal Performance Test

After the system construction is complete, including all backfilling, and the system has reached operating condition for not less than 48 hours nor more than 168 hours, all of the temperature sensors shall be read by an independent laboratory with experience and equipment appropriate for the sensors used. For each temperature sensor location the initial casing temperature shall be recorded. All of the temperature values of the temperature sensors shall be tabulated and submitted in accordance with requirements herein.

3.9.3 Warranty Thermal Performance Test

After not less than 9 months nor more than 11 months of continuous operation, all of the temperature values of the temperature sensors shall be read by an independent laboratory with experience and equipment appropriate for the sensors used. The temperature shall be tabulated and submitted in accordance with requirements herein.

3.9.4 System Failure

System shall be deemed a failure when the conduit surface temperature exceeds values in Table 3, that portion shall be repaired and temperatures again measured and recorded.

TABLE 3

Carrier pipe Temperature TP (degrees F)

Acceptable Casing Temperature TC (degrees F)

250 110

275 116

300 123

325 129

350 136

400 149

425 155

450 162

The following equations were used to calculate the above values:

TC, </=[(0.261) X (TP) + 11.5] TC, </=[(0.261) X (TP) + 44.3]”

NON ESCORTED SITE VISIT

SITE VISIT - NO ESCORTED SITE VISIT TO MCAS CHERRY POINT

PROVIDE THE NAME OF COMPANY; FULL NAMES OF ATTENDEES; AND DATE YOU SELECT (10/3 or 10/8) THIS INFORMATION MUST BE EMAILED TO : ELIZABETH.CARMACK@NAVY.mil by MONDAY SEPT 30, 3:00 p.m.

(End of Summary of Changes)