IR 05000454/1980020
| ML19345C747 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 10/28/1980 |
| From: | Danielson D, Erb C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19345C742 | List: |
| References | |
| 50-454-80-20, 50-455-80-19, NUDOCS 8012080286 | |
| Download: ML19345C747 (4) | |
Text
g _.
-
_
_.
_ _
=
N.,
U.S. NUCLEAR REGULATORY COMMISSION
'
0FFICE OF. INSPECTION AND ENFORCEMENT
REGION III
Reports No. 50,454/80-20; 50-455/80-19 Docket Nos. 50-454; 50-455 Licenses No. CPPR-130; CPPR-131 Licensee: Commonwealth Edison Company
'
-P. O. Box 767-Chicago, IL. 60690
,
Facility Name: Byron Station, Units 1 and 2
,
Inspection At: Byron Site, Byron, IL Inspection Conducted: October 7-9, 1980 C Y
/0!Ef(!ft Inspector:
C. M. Erb z n:&~
'
'
Approved By:
D.
Danielson, Chief
/c SJ f'b Engineering Support Section 2 Inspection Summary Inspection on October 7-9, 1980 (Reports No. 50-454/80-20; 50-455/80-19)
Areas Inspected: Reviewed records-for modification of four steam generators, Unit 1; inspected hardware and QC documentation for safety related components, Units 1 and 2; reviewed fabrication and QC records for flux tube instrumentation lines, Unit'1. This inspection involved 16 inspector-hours onsite by one NRC inspector.
Results: No items of noncompliance or deviations were noted.
-8012080 g
i
_
--
.
--
..---
.
--
-.-.
.
f-
...
.
-
4'
DETAILS
,
Persons Contacted i
Licensee Employees
'*J. T. McIntire~, QA Supervisor
.
- R. T. Tuetken, Lead Mechanical Engineer.
,
- J.~T.
Porter, Senior Inspector
!
- R. B. Klinger, QA Engineer
- R.
Byers, Structural Field Engineer R. Choinard, QA Inspector Other Personnel W. Everett, Containment Building Superintendent, Hunter Corporation R. Larkin, QA Manager, Nuclear Installation Services Company
- Denotes those present at the exit interview.
l Functional or Program Areas Inspected 1.
. Modification of Four Steam Generators - Unit 1 Eight new openings were made in these generators to design and fabrica-tion requirements of Westinghouse.
Sizes of openings are as follows:
i-Size Weld Pad Buildup Function j
A,B,C 5" Yes Surveillance j
D,E 6" Yes Surveillance i
F,G 2.5" No Surveillance
]
H Small No Wet Lay-up i
As the weld pads were built up, each 1/2. inch of weld was given a magnetic particle inspection. Procedure NPT-73 was used to preheat and tack weld the five areas of weld pad build up.
The finished weld pads were given a stress relief and an ultrasonic inspection. The QC operations were performed by Pittsburgh Testing Laboratory (PTL).
Approvals of design specifications and audits on welding and fabrica-tion by.S&L'and CECO were in the documentation.
No' items of~ noncompliance or deviations were identified.
2.
Safety Related Components - Units 1 and 2 a.
Documentation for the Unit 1 Boron Injection tank was reviewed.
This tank is a Class 2 tank manufactured by Southwest Fabricating
.
and Welding Company.
It was released by W on-QR-21906 and the welds were 100% radiographed. 'TheLrequirements of ASME-Section III, 1971 Edition, Summer 1973 Addendum, and Code Case 1623 apply.
.
-2-
.
_
_
,.
-
.
.
-
- _., _.. -
__ _
/
-
..
'
b.
Records for the Letdown heat exchanger were examined. This ex-
' changer was built by Joseph Oat Corporation and released by W on QR-29363. The tube side is Class 2 and the shell side Class 3.
This exchanger was given spot radiography en the welds. ASME Section III 1974 1. Lhe governing code for this item.
Records for the Recycle Holdup tanks and accumulators for Unitr I c.
and 2 were examined.
There are two 125,000 gallon recycle tanks which are common to both plants.
These tanks were built on site by Chicago Bridge and Iron.(CBI). These tanks were given spot radio-graphic inspection.
The fitup and welds appeared to be acceptable, d.
Records for the Boric Acid tanks for Units 1 and 2 were reviewed.
These tanks were built by CEI and each holds 48,000 gallons.
They are Class 3 tanks and were identified as IAB03T and 2AB03T.
The holddown bolts on both tanks had nuts in some cases and in others none with no protection.
The tank 2AB03T had some fire proofing material sticking to it from operations at the structural beam level above. One weld, FW-356 on line S-AB-100-43 which was a fillet on a 2" line, was so small it was evidently incomplete.
In the boric acid area (401' level), 14 butt welds in 3 and 4 inch piping were not complete.
This piping is marked NPT-3 and representative welds are FW-51, FW-68 and 93A.
These incomplete welds are considered to be an unresolved item (454/80-20-01).
No items of noncompliance or deviations were identified.
3.
Fabrication and Testing Flux Tubes - Unit 1 Hunter Corporation is installing the 3/4" schedule 80 tubing from the seal table to the bottom of the reactor pressure vessel.
The material is SA-213, TP304L. There are 58 lines with six socket welds in each one. There are two GTAW procedures with the one closest to the vessel using Inconel filler and the other five using stainless steel 308 filler.
All welds are given a penetrant test and the lines are Class 1.
WP-439 is used for the stainless steel to stainless steel welds, while WP-438 is used for the Inconel to stainless steel joint. Hartford Steam Boiler and Insurance acted as the inspection agency for this system. QC records and identification of these welds appeared to be acceptable.
No items of noncompliance or deviations were identified.
Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of noncompliance,
-3-
(
.
or deviations. Unresolved items disclosed during the inspection are
.-
discussed in Paragraph 2.d.
Exit Interview The inspector met with licensee representatives (denoted under Persons Contacted) at the conclusion of the inspection on October 9, 1980. The inspector summarized the purpose and findings of the inspection, which was acknowledged by the licensee.
-4-