ML20134B557

Requests Implementation of Moisture Control Requirements for Low hydrogen,covered,arc-welding Electrodes Used on safety-related Sys within 2 Wks

ML20134B557
Person / Time
Site:	05000000, Palo Verde
Issue date:	02/15/1978
From:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
Shared Package
ML17198A269	List: IR 05000335/1978013 IR 05000389/1974001 IR 05000389/1975001 IR 05000389/1975002 IR 05000389/1975003 IR 05000389/1975004 IR 05000389/1975005 IR 05000389/1976001 IR 05000389/1976002 IR 05000389/1976003 IR 05000528/1974002 IR 05000528/1975001 IR 05000528/1976001 IR 05000528/1976003 IR 05000528/1976004 IR 05000528/1977003 IR 05000528/1977004 IR 05000528/1978001 IR 05000528/1978002 L-75-187, Requests Encl Portion of Insp Rept 50-389/75-01 Be Withheld from Public Disclosure.Previous Ltr Should Be Disregarded.W/O Encl L-76-328, Informs That Insp Rept 50-389/76-01 Contains No Proprietary Info L-76-397, Informs That Insp Rept 50-389/76-02 Contains No Proprietary Info L-78-288, Advises That FSAR & Environ Rept Submittal Date Revised to Mar 1980 Due to Reduction in Const Schedule ML20132B481 ML20132C157 ML20134A387 ML20134A397 ML20134A403 ML20134A440 ML20134A478 ML20134A491 ML20134A501 ML20134A520 ML20134A530 ML20134A536 ML20134A561 ML20134A568 ML20134A579 ML20134A591 ML20134A594 ML20134A596 ML20134A601 ML20134A603 ML20134A608 ML20134A616 ML20134A619 ML20134A623 ML20134A626 ML20134A629 ML20134A633 ... further results
References
FOIA-84-293 NUDOCS 8508150667
Download: ML20134B557 (2)

Text

-_

UNITED STATES t

/

t NUCLEAR REGULATORY COMMISSION E File COPYY

'e REGION V 0, i 4

SulTE 202. WALNUT CREEK PLAZA k, '

,o 1990 N. CALIFORNIA SOULEVARD

• ,pe*

WALNUT CREEM CALIFORNIA 94$94 A 1 5 1978 Docket No. 50-528 Arizona Public Service Company

.. O. Box 21666 Phoenix, Arizona 85036 Attention: Mr. E. E. Van Brunt, Jr.

Vice President, Construction Projects and ANPP Director Gentlemen:

Subject:

Control of Low Hydrogen, Covered, Arc-Welding Electrodes at Palo Veroe Units Nos.1, 2, and 3 Our inspection of the Palo Verde Units 1, 2, and 3 on January 16-20, 1978 found that the constructor, Bechtel Co poration, has established two weld red control systems. One system meets the requirements of AWS D1.1 and is being used for structural welding and ccntainment liner welding. This system is consistent with the NRC position on moisture control for low hydrogen covered arc-welding electrodes and was apparently i

initiated in response to our December 8,1977 letter on the same subject.

A second system is being used for all ASME code welding (except con-tainment liner welding) in accordance with Section III, Division I of the ASME Boiler and Pressure Vessel Code.

However, since the components being welded per the ASME code are as equally important to safety as those being welded per the AWS code, we are concerned that your Con-structor's interpretation of the ASME code is less stringent than the AWS code in the area of moisture control for low hydrogen covered arc-welding electrodes.

It is our position that, in order to maintain the same high level of assurance that all systems important to safety will perfonn their required function, the moisture controls of all low hydrogen covered arc-welding electrodes used on safety related systems and structures should conform to the NRC position provided in our December 8,1977 letter of this subject.

$$81lg78507o3 LEIGHTOO4-293 paa i

Arizona Public Service Co. R8is1978 To provide assurance that moisture absorbtion wil'1 not degrade the low hydrogen covered welding electrodes used for Palo Verde Units 1, 2 and 3 Arizona Public Service is requested to implement the moisture control requirements consistent with the NRC position within two (2) weeks of your receipt of this letter.

Sincerely, 4

M_

R. H. Engelken Director i

4 j

f f

4 k

-. _