ML19351A120

Informs of Comparison of engine-mounted Piping Wall Thickness Against Min Requirements of ANSI B31.1.Thicknesses Are Acceptable W/Draft Response to Question 222.55,to Be Incorporated Into FSAR Amend

ML19351A120
Person / Time
Site:	Fermi
Issue date:	06/22/1981
From:	Colbert W DETROIT EDISON CO.
To:	Kintner L Office of Nuclear Reactor Regulation
References
EF2---53-465, NUDOCS 8106250287
Download: ML19351A120 (2)

Text

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Detroit a

2000 Secono Avenue cC'* son ?tmanit"" '

I June 22, 1981 EF2 - 53,465 NV d.. Y t 1

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• Mr.

L. L. Kintner D

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w hgipY Division of Project Management Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.

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Reference:

Enrico Fermi Atomic Power Plant, Unit 2 NRC Docket No. 50-341

Subject:

Diesel Generator Engine Mounted Piping Code Classification As requested by R. J. Giardina, Detroit Edison compared i

l the wall thickness of the engine mounted piping against the minimum requirements of ANSI B31.1 and found the I

thicknesses tr. be acceptable.

This information will be provided in responses to Q. 222.55.in a forthcoming FSAR Amendment, draft copy attached.

Sincerely, W.

F. Colbert Technical Director l

Fermi 2 Project I

WFC/LES:jl i-cc:

Mr.

B.

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8106250 $ Q

i QUESTION The FSAR text and Table 3.2-1 states that the 222.55 pipingsystamsforthedieselgeneratorauxilgaries (3.2)

(fuel oil system, cooling water, lubrication,-

(9.5.4) air starting, and intake and combustion system)

(9.5.5) that are mounted on the auxiliary skids are "de-(9.5.6) signed seismic Category I and are ASME Section (9.5.7)

III Class 3 quality.

The engine mounted components (9.5.8) and piping are designed and manufactured to DEMA standards, and are seismic Category I.

This is not in accordance with Regulatory Guide 1.26 which requires the entire dir:sel generator auxi-liary systems be designed to ASME Section III Class 3 or Quality Group C.

Provide the industry standards that were used in the design, manufcture, and inspection of the engine mounted piping and components.

Also show on the appropriate P&ID's where the Quality Group Classification changes from Quality Group C.

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RESPONSE

(222.55)

The engine mounted piping, other than those designated as ASME Section III, Class 3, was inspected for compliance to the minimal wall thickness require-I ments of ANSI B31.1.

The engine piping of the l

air start, air coolant, jacket coolant, fuel oil l

l and lube oil systems meets these B31.1 requirements.

l J. R. Green

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l 6-23-81

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