ML17296A450
| ML17296A450 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 08/16/1979 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Spencer C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML17296A449 | List: |
| References | |
| NUDOCS 7910040335 | |
| Download: ML17296A450 (8) | |
Text
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PHOENIX ARIZONA 85036 August 16, 1979 ANPP-13675-JAR U.
S. Nuclear Regulatoxy Commission Region V Wain'ut Creek Plaza Suite 202 1990 North California Boulevard WalInu" Creek, C~oxnia 94596 Attention:
Subject:
Mr. G.
S. Spencer, Chief Reactor Construction and Engineexing Support Branch NRC I6E Inspection of April 30-May 4, 1979 File:
79-019-026
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Dear Sir:
This letter refers to the Inspection conducted by Mr. L. Voxderbrueggen and members of youx staff on April 30-May 4, 1979, as documented in your letter of July 10, 1979 of activities authorized by Nuclear Regulatory Commission (NRC)'onstruction Permit Nos.
CPPR-141, 142 and 143.
During this Inspection, one (1) item of noncompliance was identified.
Our response to this item of noncompliance (Infraction) is presented in the enclosed Attachment A.
EEVBJr/JAR:skc Enclosure Very truly Aurs K.W ~C~iE'I,C E, E. Van Brunt, Jr.
APS Vice President Nuclear Projects ANPP Project Director cc:
R, L.
L.
W;,
R. L.
B. S.
A. C.
W. P.
W. J.
J.
E.
D. R.
Robb Price Hand Kaplan Gehr Wilson Stubblefield Bashore Hawkinson
>ez00~a S~S
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ATTACHMENT A Docket Nos. 50-528, 50-529, 50-530 Construction Permit Nos.
CPPR-141,
- 142, 143 Notice of Violation Based on the results of the NRC Inspection conducted on April 30-May 4,
.1979, it appears that certain of your activities were not conducted in full compliance with NRC requirements as indicated below:
10CFR50, Appendix B, Criterion V, Instructions, Procedures and Drawings, as implemented by PSAR Sec"ion 17.1A.5, re-quires that activities affecting quality be accomplished in accordance with instructions, procedures or drawings appropriate to the circumstances.
Bechtel Specification 13-CH-365 establishes the following requirements:
a.
Para ra h 10.3 Clean-U Pre aration Before depositing concrete, debris must be removed from spaces to receive concrete.
b.
Para ra h 10.7.1 Se e ation Concrete must not be dropped through dense reinforcing steel which might cause segregation of the coarse aggregate and must not be dropped free through a height of more than six feet (6').
Bechtel Specificati'on 13-CM-375, Placing of Reinforcing Steel, Paragraph 6.4, requires reinforcing steel bar to be securely tied with black annealed wire of sufficient gauge to prevent movement.
Bechtel Procedure WPP/QCI 52.0, Concrete Preplacement, Paragraph 5.6'.1, requires the responsible Area Field Engineer (and Survey Engineer, if applicable) to initial and date in Entry Nos. 7.3 and 7.4 of Exhibit 52.0-1, Construction Inspection Planning for Concrete Preplacement, indicating that the work is complete and conforms to the governing documents.
Contrary to these requirements, on Hay 2, 1979 during Concrete Placements 2J00-3, -ll, -12, -13 and -19 for Unit No.
2 Control Building, the following examples of nonconformance were observed:
1.
In one location, concrete was observed being dropped through dense reinforcing steel.
2.
In two locations, concrete was observed being dropped for a distance greater than six feet (6').
j Attachment A
Notice of Violation Page 2
3.
In three locations, reinforcing steel was observed to be loose and not secureLy fastened.
4.
Expanded metal formwork in two locations had not been completed prior to commencing the placement.
5.
Paper drinking cups and one partial roll of tie-wire were observed in the forms during concrete placement.
This is an Infraction.
~Res ohse Corrective Action and Ste s Taken to Avoid Further Violations Items 1 and 2
Discussions were held with Bechtel Engineers, Concrete Supervisors and field personnel to follow procedures to prevent further viola-tions and" to minimize leakage when relocating the concrete boom from one tremie to the next and to assure that concrete is not dropped over six feet (6') or ghrough congested rebar.
Item 3 The rebar in question was tied-off during the concrete placement.
Later investigation by Bechtel Engineering and discussions with cognizant field personnel revealed that the rebar may have.been moved temporarily for tremie insertion and to facilitate the con-crete placement activities.
Instructions have been given to con-crete placement personnel to ensure a timely repositioning and retieing of any reinforcing steel that has been moved or untied before the placement proceeds.
Item 4 Investigations indicated that one (1) eight-foot (8') section of expanded metal bulkhead was not completed prior to signing-off the Construction Inspection Plan (CIP).
The Field Engineer was remiss in not following procedures to note on the CIP that the work would continue after the CIP was signed-off.
Additionally, every ten feet (10') along the placement an expanded metal bulkhead was left out so that tremies could be put in the wall.
This was noted on the CIP by the Field Engineer and was accepted by QC prior to concrete being placed against the bulkhead form.
.L J
Attachment A
Notice of Violation Page 3
Appropriate Civil Field Engineers'ave been instructed, by Civil Information Memo No. 89, that any work to be accomplished after CIP sign-off shall be so noted in the Remarks Section of the CXP.
Item 5 At the time of observation, the placement was stopped and the roll of wire was removed, however, the rebar congestion and the wall thickness prevented retrieval of the paper drinking cups before the head of the concrete rolled over the cups.
An Engineering
,analysis of tnis condition clearly indicates that this isolated incident did not impair the safety or design of this wall section.
Bechtel Field Engineers and the concrete placement personnel have been instructed to remove loose articles from the surrounding area to assure that any items do not get into the concrete forms and that the forms remain free of any debris.
Arizona Public Service Company has again reminded Bechtel Management of the necessity to adhere to the fullest extent the Project Con-struction Procedures.
All of the corrective actions are complete as of August 10, 1979.
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