ML20138C132

Insp Repts 50-327/86-16 & 50-328/86-16 on 860224-28. Violation Noted:Failure to Follow Procedures for Concrete Expansion Anchor Bolt Insp Per IE Bulletin 79-02

ML20138C132
Person / Time
Site:	Sequoyah
Issue date:	03/19/1986
From:	Blake J, Liu W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML20138C124	List: ML20138C122 ML20138C127 ML20138C132
References
50-327-86-16, 50-328-86-16, IEB-79-02, IEB-79-2, NUDOCS 8604020366
Download: ML20138C132 (5)

See also: IR 05000327/1986016

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UNITED STATES

['p[tge o NUCLEAR REGULATORY COMMISSION

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3 REGION 11

_y ,j 101 MARIET,TA STREET, N.W.

• I 's ATLANTA, GEORGI A 30323

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Report Nos.: 50-327/86-16 and 50-328/86-16

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Licensee: Tennessee Valley Authority

6N38 A Lookout Place

1101 Market Street

Chattanooga, TN 37402-2801

Docket Nos.: 50-327 and 50-328 License Nos.: 'DPR-77 and DPR-79

Facility Name: Sequoyah 1 and 2

Inspection Conducted: February 24-28, 1986

Inspector: h C< '

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Dat Si ned

Approved by: .  ! L 3. /f 8d

J.f.BJake,SectionChief Date' Signed

Erigirip'ering Branch

(ivision of Reactor Safety

SUMMARY

Scope: This routine, unannounced inspection involved 36 inspector-hours on site

in the areas of concrete expansion anchor bolts associated with IEB 79-02

inspection, safety-related pipe support and restraint systems, and licensee

actions on previous enforcement matters.

Results: ~ 0ne violation was identified - Failure to follow procedures for

concrete expansion anchor bolt inspection, paragraph 5.0.

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B604020366 860326 7

DR ADOCK O

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REPORT DETAILS

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l'. Persons Contacted

L Licensee Employees

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• P. Wallace, Plant Manager

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• B. Patterson, Maintenance Superintendent

• W._Wilburn, Technical Services Manager

• G. Kirk, Compliance Supervisor

• R. Olson, Modification Manager

• M.' Harding, Engineering Group Supervisor

• G. Bo'les, Mechanical Maintenance Supervisor

- *R. Pierce,-Mechanical Maintenance. Supervisor

[f- *L. Bryant, Mechanical Maintenance Section Supervisor

-*R. Denney, Design Service Staff

• R. Landis, Modifications Engineer

• R. Birchell, Mechanical Engineer, Compliance

• F. Denny, Quality A'ssurance (Qf:) Engineer, Office 'of Engineering.

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l" Other licensee . employees contacted included engineers, technicians,

security office members and office personnel.

NRC Resident Inspeci. ors

, _* L. Watson, Resident Inspector

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• P. Harmon, Resident Inspector-  ;

• A. Herdt, Chief, Engineering Branch '

i- -*Attendet exit interview

2. Exit Interview

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The inspection scope and findings were summarized on February 28, 1986, with

s .those persons indicated in paragraph 1 above. The inspector described the

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areas inspected and discussed in detail the - inspection findings. No

dissenting comments were received from the licensee.

i (0 pen) Violation 327, 328/86-16-01, Failure to follow procedures for

concrete' expansion anchor bolt inspection, paragraph 5.0.

L (0 pen) Unresolved Item 327/86-16-02, Evaluation of heating, ventilating and

air conditioning (HVAC) duct supports at EL.734, paragraph 7.0.

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! The licensee did not identify as proprietary any of the material provided to

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-or rev1ewed by the inspector during this inspection.

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- 3. Licensee Action on Previous Enforcement Matters

(0 pen) Violation 327, 328/85-49-01, Inspection and installation problems

for seismically designed pipe supports. The inspector reviewed the draft

response regarding the corrective steps taken by the licensee. It was noted

that a walkdown inspection was performed by the licensee inspection team

which consisted of one engineer, two craftsmen, and one Quality Control (QC)

inspector._ The inspection covered only in the auxiliary building. The

supports inspected were not documented in the sample program. The inspector

advised the licensee that the supports inspected should have been documented

and readily available for NRC's review.. In addition, other areas which

contain safety-related pipe supports should also be included in-the sample

program. Pending completion of the necessary corrective actions by the

licensee, this item remains open.

4. Unresolved Items

Unresolved items are matters about which more information is required to

determine whether they are acceptable or may involve violations or devia-

tions. One new. unresolved item identified during this inspection is

discussed in paragraph 7.0.

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5. Concrete Expansion Anchor Bolts Associated With IE Bulletin 79-02 Inspection

The inspector performed a field inspection of concrete expansion anchor

bolts associated with the pipe s~u pport installations in the auxiliary

building to determine whether they had been properly installed and inspected

in accordance with licensee commitments and NRC requirements. The inspector

noted that at least one concrete expansion anchor bolt was not properly

installed and inspected for each of the pipe supports and one steel column

baseplate identified below:

Pipe Support Piping System

Mark No. 1ERCWH-230 Essential Raw Cooling Water (ERCW)

, Mark No. 1ERCWH-235 ERCW

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Mark No. ICCH-1141 Component Cooling (CC)

Mark No. ICCH-1142 CC

Mark No. 1070HPABCCT-041-6 CC

Drawing No. 47A450-4-86 ERCW

Drawing No. 47A920-31-54 Chilled Water

(Seismic Support)

Drawing No. 47A920-31-55 Chilled Water

(Seismic Support)

Mark No. 47W491-3-8 Deminerali~ zed Water

One baseplate at elevation 714 used for the pump support platform.

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The above nine pipe supports and one baseplate for the pump support platform

were partially inspected. It was noted that the anchor bolts associated

with the supports and the baseplate were identifi' ed to have visual gaps

between the boltheads and the baseplates. In some cases, the gaps were

found to be even greater than i inch in length.

TVA Sequoyah Nuclear Plant 79-02 Anchor Bolt Inspection procedure requires

the correct installation of self-drilling concrete anchor bolts in safety f

systems per General Construction Specification G-32 and TVA's inspection and

testing program. Paragraph 3.2.5 of Specification G-32 states that the

installers are to be instructed to tighten the bolts between 1/8 and 1/4

turn after the bolthead comes into contact with the attachment or baseplate.

The licensee's QC inspectors failed to detect the anchor bolt deficiencies

for the aforementioned pipe supports and the baseplate for the pump support

platform during the inspection. This is a violation of 10 CFR 50,

Appendix B, Criterion V, and is identified as Violation 327, 328/86-16-01,

Failure to Follow Procedures for Concrete Expansion Anchor Bolt Inspection.

Within the areas inspected, one violation was identified.

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6. Pipe Support and Restroint Systems in Conjunction With The Previous

Violations

During the inspection the inspector found discrepancies for the following

supports-

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Uniti 1, Auxiliary Feedwater System Support No.1AFDH-350, one jam

nut was missing.

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Unit 1, Chilled Water System Support No. 1031 HPABHVAC-080-04,

one nut was missing from the load bearing bolt connection.

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Unit 1, Fire Protection System Support No.1026 HPABFS-075-016,

the ears of the 6" standard-pipe strap were not properly

tightened to the supporting plate for which approximately

1" gap was observed.

Discrepancies identified from the above supports are aoditional examples to

the previous violation item. 327, 328/85-49-01. The licensee's corrective

actions with respect to the violation should also include the aforementioned

supports. .

Within the areas inspected, no violations or deviations were. identified.

7. Evaluation of HVAC Duct Support

During the inspection, the NRC Region I NDE Team identified potential

problems associated with missing welds, unpainted, uncleaned, and possibly

uninspected support attachments for the HVAC supports 1030 HDABHVAC-0820,

0822 and 7965, located above elevation 734 in the auxiliary building. At

the time of this inspection, the licensee was not able to provide adequate

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information with regard to the above concerns. Pending more information to

be furnished by the licensee for further review, this matter is identified

as Unresolved Item 327/86-16-02, . Evaluation of HVAC Duct Supports at

Elevation 734.

Within the areas inspected, no violations or deviations were identified.