ANSWERS_Questions_SourcesSought_F3R3D02067A001_26042012.pdf

Sources Sought F3R3D02067A001_26042012

QUESTIONS_1

Natural Gas Survey Schriever AFB

1. QUESTION: Is a cathodic protection (CP) system currently in place? Are records available for review?

What type of CP is in use? How often is it serviced – is it on a regular maintenance schedule?

ANSWER: Passive anode. No service records.

2. QUESTION: Are service lines to base housing part of the same system as the rest of the base? If so, they would need to be included in the SOW.

ANSWER: Answered in S.O.W. paragraph 4.a.(1) No.

3. QUESTION: If the facility owners are to re-ignite, will they also go through and shut off appliance valves before gas is turned back on?

ANSWER: Contractor will do shut offs for areas relevant to the project, or will coordinate with building maintenance for a shut off.

4. QUESTION: Will a walk-through time be provided for interested vendors?

ANSWER: Clarify. There is 6 miles of gas line infrastructure, both inside and outside the

RA.

5. QUESTION: Is the gas distribution system looped?

ANSWER: See gas infrastructure map.

6. QUESTION: Is it on a master meter? If so, when was the last time the master meter was calibrated?

ANSWER: Yes. But the question is irrelevant to the scope of services. The master inflow meter is used by the natural gas provider for billing.

7. QUESTION: What is the operating pressure? e.g. oz, low, medium, hi How many pounds?

ANSWER: Contact base natural gas provider, Black Hills Energy

8. QUESTION: Will a gas leak survey be required after the CP system is installed? The order of precedence may need to be modified.

ANSWER: Contractor should be qualified to know if a gas leak occurs during installation of a CP system.

9. QUESTION: Will a locked storage area be available for equipment storage? Will an area be provided for staging of materials? Will an office space be available? Will internet access be available?

ANSWER: a. No b. Depends where requested. c. No d. Not from the base.

10. QUESTION: Are all service risers and metered lines insulated from the gas distribution system?

ANSWER: Some are, some aren’t

11. QUESTION: Are all metered lines currently under cathodic protection?

ANSWER: No

12. QUESTION: Are gas meters currently used for consumption purposes or billing purposes?

ANSWER: Partially

13. QUESTION: What type of steel lines are in place? X-tru coat, mill-wrapped, or bare?

ANSWER: Bare

14. QUESTION: Have gas leak surveys been performed? If so when was the most recent survey completed? Are the records available for review?

ANSWER: a. Yes. b. 2006 c. No

15. QUESTION: Are maps of the gas distribution system current and available?

ANSWER: Yes

16. QUESTION: Will section valves be included in either survey?

ANSWER: The entire system is included as part of the survey.

17. QUESTION: What part of the gas distribution system is PE pipe?

ANSWER: Infrastructure size and type information has been provided.

18. QUESTION: By-passes will need to be installed as meters are removed for testing. Will this be added to the SOW?

ANSWER: a. Not necessarily. b. No.

19. QUESTION: Are any of the current meters mileage-exceeded?

ANSWER: No meter service records

20. QUESTION: What is your accuracy requirement for the AS-BUILT maps?

ANSWER: Equal to location of infrastructure in the GEOBASE data file.

21. QUESTION: Can gas leak detection equipment other than flame ionization be used as long as it is AGA approved? There is more accurate and better equipment on the market for this purpose.

ANSWER: See S.O.W. Only equipment that is approved by PHMSA for position certification per Title 49 is acceptable. See the CFR sections under training requirements and documentation programs.

22. QUESTION: Are all pressure regulators adjusted to proper pressures? Or will they need to be once the meters are calibrated?

ANSWER: That is inherently part of the meter calibration requirement.

23. QUESTION: Are any meters located inside a structure?

ANSWER: No