ML20024A487
| ML20024A487 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 06/06/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Sternberg D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ANPP-23982-BSK, DER-29, NUDOCS 8306170367 | |
| Download: ML20024A487 (6) | |
Text
t i
v CIC9VED HRC Arizona Public Service Company g3 m 1: 15 P.O. BOX 21666
- PHOENIX, ARIZONA 85036 June 6, 1983 ANPP-23982-BSK/ @ iONVin U. S. Nuclear Regulatory Conunission Region V-Creekside -Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. D. M. Sternberg, Chief Reactor Projects Branch 1
Subject:
Final Report - DER 83-29 A 50.55(e) Reportable Condition Relating to Two Hangers In Unit 1 Safety Injection System Were Not Installed As Designed.
File: 83-019-026; D.4.33.2 A) p-545
'.r Telephone Conversation between A. Young and R. Tucker on
Reference:
May 6, 1983.
Dear Sir:
fAttached is our final written report of the Reportable Deficiency under 10CFR50.55(e), referenced above.
Very truly yours, 04b
%. gg E. E. Van Brunt, Jr.
APS Vice President, Nuclear Projects Management ANPP Project Director EEVB/RQT:ru Enclosure cc:
See Page 2 4
i 8306170367 830606-PDR ADOCK 05000520 S
-M47
i t
U. S. Nuclear. Regulatory Commission Page 2 cc:
Richard DeYoung, Director Office of Inspection and Enforcement U.'S. Nuclear Regulatory Commission-Washington, D. C. 20555 T. G. Woods, Jr.
C. C. Andognini J. A. Roedel D. B. Fasnacht A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. R. Bynum P. P. Klute/D. D. Green A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant D. R. Hawkinson L. E. Vorderbrueggen G. A. Fiore11i S. R. Frost Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway - Suite 1500 Atlanta, Georgia 30339 l
~
d
FINAL REPORT - DER 83-29 DEFICIENCY EVALUATION 50.55(e)
ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 1 I.
Description of Deficiency Pipe hanger drawings 13-SI-100-H-006 and 13-SI-106-H-007 specify axial restraints for Safety Injection System pipes SI-100-CCBA-4" and SI-106-CCBA-3", respectively, by indicating 1"x1/2"x0'-4" long bars attached adjacent to the north and south sides of each pipe dummy stub base plate (2 bars per base plate). The restraining bars for both hangers, shown on drawing 13-SI-106-H-007, are referenced by drawing 13-SI-100-H-006. As described in Nonconformance Report (NCR) PA-6143, all four bars were installed around the base plate for hanger 1-SI-106-H-007, restraining transverse as well as axial pipe motion. Hanger 1-SI-100-H-006 was lef t with unrestrained axial motion (see attached sketch). The subject condition is attributed to a misinterpretation of design drawings arising from having all four restraint bars drawn on one support drawing.
II.
Analysis of Safety Implications The associated piping systems were analyzed for the installed restraint configurations. Results of the evaluation show that line SI-100-CCBA-4" would have acceptable stress levels and support loads should no axial restraint be provided at support 1-SI-100-H-0 06.
Although the stress levels of line SI-106-CCBA-3" would be acceptable, support 1-SI-106-H-003 would have inadequate load capacity to withstand additional forces imposed by a transverse (E-W)_ restraint at hanger 1-SI-10 6-H-0 07.
The subject condition is therefore evaluated as reportable under the requirements of 10CFR50.55(e) since it represents a significant deficiency in construction such that, if left uncorrected, it could adversely affect the safety of operations of the plant during the lifetime of the plant. A detailed analysis of safety implications was not pursued as the condition is being corrected.
III.
Corrective Action
- 1. NCR PA-6143 will be dispositioned to have supports 1-SI-100-H-006 and 1-SI-106-H-007 repaired per the design drawings.
- 2. To preclude recurrence, drawings 13-SI-100-H-006 and 13-SI-106-H-007 are being revised to clarify restraint bar locations.
- 3. This condition has been verified to be an isolated event. The attached tabulation provides a list of all Q-Class pipe supports having dummy stubs. Based upon a review of the associated drawings, 65 support designs were identified with base plates restrained by bar stops. Of these, only two subject supports used' cross-reference on one support drawing and located the restraint bars for both on the other support drawing.
ATTACHMENT TO DER 83-29 Page 1 of 3 g
.. s
)
l-51 f06 N007 v
\\
I St 100 H 006 f
n AXIAL RESTRAINT BOTH SUPPORTS DESIGN CONFIGURATION k
-)
\\
l I-S1-106 H-007
/
N.
V
[
N i
l $r-DOO-H-006 l
's AXI AL AND LATERAL RESTRAINT l
UNRESTRAINED l
INSTALLED CONFI GURATION
r..
s 1
ATTACHMENT TO DER 83-29 l
Page 2 of 3 BAR X-REF DAR X-REF HANGER TAG N0.
STOPS DWG HANGER TAG M0.
STOPS DWG 13-CH-142-H-001 13-SI-031-H-005 X
l 13-CH-142-H-005 13-St-033-H-002 13-CH-142-H-006 13-St-033-H-003 X
l 13-CH-142-H-008 X
13-SI-033-H-004 X
l 13-CH-149-H-001 X
13-SI-034-H-002 X
13-CH-149-H-002 13-SI-034-H-004 13-CH-149-N-005 13-St-067-H-002 X
t 13-CH-149-N-007 13-SI-067-H-004 l
13-CH-149-N-009 X
13-St-070-H-003 1
13-CH-149-H-010 X
13-SI-070-H-004 13-CH-149-N-012 X
13-S!-070-N-006 X
13-CH-149-N-013 X
13-SI-070-H-008 13-CH-149-H-014 X
13-SI-070-H-009 X
13-CH-424-N-001 13-St-070-H-012 13-CH-424-H-002 13-SI-072-H-003 l
13-CH-425-N-001 13-SI-072-H-004 l
13-CH-425-H-008 13-S!-072-H-005 l
13-EW-005-H-004 X
13-SI-072-H-009 X
i 13-EW-005-N-005 X
13-81-072-H-012 13-SG-033-H-012 13-St-072-N-013 13-SG-036-N-017 X
13-SI-072-H-020 13-SG-039-H-001 13-SI-078-N-005 13-SG-039-H-005 13-SI-079-H-006 X
13-SG-039-H-012 13-St-002-N-002 X
13-SG-039-H-014 13-SI-007-N-001 X
13-SG-039-H-017 13-SI-007-H-002 X
13-SG-039-N-020 13-81-007-H-000 13-SG-039-H-022 13-SI-009-N-000 13-SG-039-H-024 13-SI-009-H-013 13-SG-039-H-028 13-SI-090-H-001 13-SG-042-H-017 X
13-SI-090-H-002 13-SG-045-H-012 13-SI-099-H-001 13-SG-040-H-001 13-SI-099-N-002 13-SG-048-N-005
-.- 13-S !-100-H-006 X
X 13-SG-040-H-015 13-St-100-H-029 X
13-SG-048-H-017 13-S!-100-H-031 X
13-SG-048-N-020 13-SI-100-H-032 X
13-SG-040-H-046 13-SI-100-H-035 x
13-SG-052-H-001 13-SI-100-H-037 X
13-SG-052-N-005 13-SI-105-N-002 X
13-SG-053-N-001 13-St-105-H-004 X
13-SG-053-H-005
--*- 13-S I-106-H-007 X
X 13-SI-002-N-001 13-St-106-H-016 X
13-SI-002-N-003 13-SI-107-N-001 13-St-000-N-001 X
13-SI-107-N-002 13-St-000-H-003 X
13-St-107-N-014 13-SI-000-H-005 X
13-SI-107-H-026 X
6 13-SI-009-H-002 X
13-SI-107-N-034 X
13-SI-009-N-005 X
13-SI-107-H-042 X
13-SI-031-H-004 X
13-SI-107-H-045 X
s ATTACIMENT TO DER 83-29 Page 3 of 3 BAR X-REF BAR X-REF HANGER TAG HD.
STOPS BWG HANGER TAG HO.
STOPS DWG 13-SI-107-H-046 13-SI-378-H-001 13-SI-114-N-001 X
13-SI-378-H-003 13-SI-119-H-002 13-SI-378-H-005 s,
13-SI-119-H-003
-- X 13-SI-378-H-006 13-SI-119-H-005 X
13-SP-025-N-006 13-SI-119-H-006 13-SP-025-H-008 13-SI-122-H-009 X
13-SP-025-H-009 13-SI-123-H-007 13-SP-030-N-004 X
13-SI-129-H-003 13-SP-030-N-005 13-SI-129-H-005 13-SP-030-N-006 13-SI-129-H-007 13-SP-030-H-007 l
13-SI-129-H-010 13-SP-030-H-008 X
13-SI-129-H-013
'X 13-SP-065-H-012 13-SI-130-H-002 13-SP-060-H-004 13-SI-131-H-G07 X
13-SP-060-H-005 13-SI-131-N-013 X
13-SP-060-H-006 s
13-SI-134-H-005 13-SP-060-H-007 13-SI-134-H-000 13-SP-068-H-008 X
13-SI-134-H-009 X
13-SP-079-N-006 13-SI-134-N-011 13-SP-079-H-007 13-SI-173-H-001 X
13-SP-079-H-008 13-SI-194-H-002 X
13-SP-079-h-009 13-SI-194-H-003 13-SP-079-H-010 X
13-SI-194-H-004 13-SP-079-H-011 13-SI-194-H-008 X
13-SP-080-H-011 13-SI-194-H-010 X
13-SP-000-H-017 13-SI-194-H-011 X
13-SP-090-N-004 13-SI-194-H-012 X
13-SP-100-H-004 l
13-SI-241-H-001 13-SI-241-H-002-13-SI-241-H-003i X-13-S I-241-H-004 -
13-SI-241-N-005 13-SI-241-H-009 13-81-241-N-012 13-SI-257-H-001 X
13-SI-307-N-002 13-SI-307-H-004 13-EI-307-N-005 13-SI-307-H-000 X
13-SI-307-N-009 13-SI-307-N-010 13-S!-307-N-011 13-SI-307-N-012 13-SI-307-N-014 13-SI-300-N-002 13-SI-308-N-005 13-SI-308-H-004 13-SI-308-N-013 X
13-SI-308-N-015 u
T r,-
g--
-,,,-m
,a,n---.,,-,--_,e.--,,,-,-~,,,,y,.,
..,n
_-...,,n.v.c,-,-
-