ML20205M644

Requests Documents Resulting from Required Analysis of Misalignment of Annulus Embedded Plate Discussed in Section 4.3, Design of Structural Elements of Integrated Design Insp Rept Issued in Apr 1984

ML20205M644
Person / Time
Site:	Seabrook
Issue date:	04/11/1986
From:	Doughty J SEACOAST ANTI-POLLUTION LEAGUE
To:	Nerses V Office of Nuclear Reactor Regulation
References
NUDOCS 8604150336
Download: ML20205M644 (1)

Text

Jp SAPL Seacoast Anti-Pollution League 5 Market St., Portsmouth, N.H. 03801 (603)431-5089 April 11, 1986 Victor Nerses Project Manager PWR Project Directorate #5 Division of PWR Licensing - A U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Nerses:

I have recently been reviewing sections of the Integrated Design Inspection Report that was issued in April of 1984 under signature of Richard C. DeYoung, Director, Office of Inspection and Enforcement. In Section 4 3 " Design of Structural Elements" under part (a) " Containment" at page 4-14 there is some discussion of the fact that the embedded plates in the Unit i annulus had been installed at the wrong elevation (too low), rendering them incompatible with the elevation of structural steel beams. The authors of the inspection report went on to state, "We were told by the design engineers of United Engineers who were involved in design of the containment structural steel in the annulus that misalignment of the embedded plates with structural beams is widespread in Unit 1."

Another similar finding by the inspection staff was related to connection of beams to columns in the annulus steel. In order to accomodate welds between connecting angles and beams framing into, but not perpendicular to, the columns, the axis of each beam was shifted one inch from the centroidal axis of the support column.

This, in their opinion, resulted in the induction of torsion stresses in the columns.

The inspectors noted that, with respect to each of the anomalous conditions described above, requirements were that a specific detailed analysis should be done (see Findings 4-10 and 4-11). SAPL is requesting that we either be provided with the documents resulting from the required analysis or that we be given citations to those documents if they do happen to be in the Local Public Document Room at the Exeter Public Library.

Thank you for your prompt assistance in this matter.

8604150336 DR 860411 ADOCK 0500 3 Jane Doug t cc: Robert Backus, Esq. Field Director Diane Curran, Esq.

Founded 1969 h\ I l