ML20086J924
| ML20086J924 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/09/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-28579-BSK, DER-82-51, NUDOCS 8401260011 | |
| Download: ML20086J924 (15) | |
Text
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,3 EC:MD IMC Arizona Public Service Company PO. BOX 21666 . PHOENIX, ARi2CNA 85036 iS JM! ! E f!: l2: l7 January 9, 1984 ~-m _
ANPP-28579-BSK/TRB U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Final Report - DER 82-51 A 50.55(e) Reportable Condition Relating to Pullman-Kellog Pipe Line Failure in Unit #1 Essential Cooling Water System File: 84-019-026; D.4.33.2
Reference:
A) Telephone Conversation between J. Eckhardt and G. Duckworth on September 10, 1982 B) ANPP-21973, dated October 8, 1982 (Interim Report)
C) ANPP-22433, dated December 1 1982 (Time Extension)
D) ANPP-22823, dated January 26, 1983 (Time Extension)
E) ANPP-23426, dated April 5, 1983 (Time Extension)
F) ANPP-23597, dated April 26, 1983 (Time Extension)
G) ANPP-23492, dated June 1, 1983 (Time Extension)
H) ANPP-24246, dated July 6, 1983 (Time Extension)
I) ANPP-27562, dated August 15, 1983 (Interim Report)
J) ANPP-28274, dated November 22, 1983 (Time Extension)
Dear Sir:
Attached is our final written report of the Reportable Deficiency under 10CFR50.55(e), referenced above.
Very truly yours,< f _
- k. .t cttt_i G at m E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects Management ANPP Project Director EEVB/TP.B: sis Attachment cc: See Page Two 8401260011 840109 '
PDR ADOCK 05000528 S PDR } f _ ~) /
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Mr. T. W.; Bishop DER 82-51 Page Two ec: Richard DeYoung, Director Office'of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.-
J. A. Roedel D. B. Fasnacht A. C. Rogers B. S. Kaplan W. E. Ide J. Vorees J. R. Byn m D. D. Green P. P. Klute A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher H. Foster D. R. Hawkinson L. E..Vorderbrueggen G. A. Fiorelli S. R. Frost J. Self D. Canady.
Records Center Institute of-Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, GA 30339 I
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, FINAL REPORT - DER 82-51 1
, DEFICIENCY EVALUATION 50.55(e)
ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNCS UNITS 1, 2, 3
- I.t - DbscrihtionofDeficiency While performing repairs to the Unit 1' Essential Spray Pond piping
^
system (repairs for. minor chips on a flange face incurred during
' fit-up), the crafts' discovered delanination and peeling of the plasite 7122H Epoxy lining in three (3) 24-inch diameter 90* elbows (Spool No.'s '
1-SP-030-S-042, 1-SP-030-S-043 and 1-SP-068-S-042). Inspection by Field Engineering revealed that the interior plasite lining of these three (3) spools had completely delaninated from the substrate. Nonconformance Report KY-296 documents the above plasite lining failures.
r
-An. investigation was initiated by Bechtel a Material and Quality-Services (M&QS) group to cvaluate this condition. As indicated in the M&QS Trip Report dated October 14, 1982 (Reference 1, attached), it was concluded that the lining failures were directly related to: 1) high r - film thickness beyond specifications; and 2) capping the pipe with solid end caps, hence not allowing a full cure.
'As a. result of the investigation,~Bechtel was informed.by Controlled '
Coatings Corporation (the coating applicator) of two other 24-inch diameter 90* elbows (Spool No.'s ISP-030-S-041 and 1-SP-068-S-040) which were coated at the same time as the above spools (application commenced 12/02/80, completed 12/05/80). An M&QS inspection of Spool No.
1-SP-068-S-040 resulted in detection of some ridges _on the flange face.
Sanding of these ridges revealed that they contained eight (8) or nine (9) voids similar to blisters. The voids, when broken open, emitted a
- strong ester solvent type odor. The area adjacent to.the exposed areas
-exhibited poor adhesion and the coating was' easily'delaminated from the finnge' face into'the spool approximately 1/2 inch. This condition is '
documented in Nonconformance Report KY-31. Inspection of Spool No.
.1-SP-030-S-041, after being physically.delaminated, revealed a high film thickness and.a very strong solvent odor. This condition is documented
~1n'Nonconformance Report KY-296. Further inspection identified Spool 1-SP-068-S-041 (24" diameter 90* elbow, coated approximately one (1) il month af ter the above identified spools) to have similar coating
. failures, as documented on Nonconformance Report KY-310.
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A plasite lining failure has also been found in Spool No.
2-SP-079-S-014. However, this failure (documented in Nonconformance ,
Report KY-315) has occurred in a 20" diameter straight spool. The i failure differs from the above identified 2"e" diameter 90* elbow
- failures in that there were clusters of pinholes in the lining. There
- was no-evidence of delamination, blistering or peeling.
For the plasite-lining failures cite'd above, the spools had been exposed
-to water for approximately 20 months prior to discovery of the lining
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failures. No inspections were performed during this time.
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DER 82 FINAL REPORT Page Two Additional inspections were conducted by the Field Coatings Engineer in accordance with STWO No. 19004 and NCR's KY-356 and KY-357 were issued.
NCR KY-356 documented minor handling damage on Spool No.'s ISP-068-S-041 and 1-SP-030-S-041. These spools were repaired in accordance with Plasite Repair Procedure No. 11 of Piping Material Classifications (13-P-ZZG-012). The condition of the lining noted on these spools does not relate to any generic lining t'ailure noted previously. The condition is related to minor damage (chips and nicks) which occurred during handling and installation.
NCR KY-357 documented blistering and minor handling damage to_ Spool No.'s ISP-030-S-040 and ISP-068-S-040. Spool ISP-030-S-040 showed some localized blistering and one blister which was the reuult of mechanical damage. The remainder of the coating is in good condition and tightly adherent. The damage noted on Spool ISP-030-s-040 is not indicative of any generic failures noted previously. This spool was repaired in accordance with Plasite Repair Procedure No. 11 of Piping Material Classifications (13-P-ZZG-012). Spool ISP-068-S-040 was documented previously on NCR KY-312. The failure was analyzed as being generic in nature, blistering, solvent entrapment and pliable lining. The spool was spot repaired with PJasite No. 9009-IT. A subsequent inspection has revealed that the repaired arecs are in good condition; however, the original shop lining exhibited generic failure (see M&QS Trip Report No.
BED-083-21 attached). It should be noced that all spools exhibiting a generic failure have been blasted and totally recoated with Plasite 9009-IT in accordance with the approved repair procedure. Spot repairing 1s used only for spools exhibiting mechanical damage.
II. Analysis of Safety Implications This condition is evaluated as reportable. Separation of the plasite lining from the 24-inch diameter 90* elbows could potentially cause a flow restriction in the Unit 1 Essential Spray Pond System. A restriction of this type could possibly preclude the system from performing to design intent during emergency shutdown procedures. The subject deficiency is therefore evaluated as reportable under the requirements of 10CFR50.55(e) since, if left uncorrected, it could adversely affect the safety of operations of the plant during the lifetime of the plant and it represents a significant deviation frcm performance specifications.
9 /
DER 82 FINAL REPORT Page ' Three i
III. ~ Corrective Action The failures of Plasite 7122H Epoxy lined spools documented in Nonconformance Reports KY-296, KY-310, KY-311, KY-312 and KY-315 were investigated by the Field Coatings Engineer and Bechtel Material and Quality Services. An inspection was subsequently conducted jointly by Bechtel-Material and Quality Services, the Field Coatings Engineer end representatives of Wisconsin Protective Coatings (the coating manufacturer), Controlled Coatings Corp. and Pullman Power Products (the pipe. supplier under Purchase Order 13-PM-201).
The following findings / conclusions regarding the cause(s) of the plasite lining failures were agreed upon by those involved in the inspection and are based upon all inspections and data gathered to date
- 1) .In the large diameter elbors, high film thickness was apparent.
Controlled Coatings Corporation stated that 24-inch and 26-inch 90*
elbows were coated with a hand-held spray gun. All other elbows and straight spools, as well as elbows shop welded to straight spools, were coated by a machine probe. The machine probe allows a thin
coat of plasitefto be applied on each pass as opposed to hand spraying, which results in a heavier, less-controlled application.
This large volume of plasite may have been applied over a four (4) day period (the mawhine probe method of application could take up to
< seven (7) days to achieve the desired thickness). Solvent entrapment subsequently resulted from capping the spools with solid end caps before the spools were fully cured. Therefore, the hand sprayed elbows with high film thickness and less cure time, together l
with capping the spools with solid end caps before the spools were fully cured, is the evaluated cause of the lining failures experienced in the 24-inch 90' elbows in Unit 1.
- 2) The lining failure found in Spool No. 2-SP-079-S-014 (a straight spool) showed no evidence of delamination, blistering, solvent entrapment or the lining being in an uncured state. The mil thickness was found to be thin rather than too thick and the coating i was applied to a rough surface on the base metal. An inspection of approximately 90 straight spools in Units 1, 2 and 3 (20" and 24" diameter) revealed evidence-of pinholes and holidays in five (5)
Unit 3 spools (document in Nonconformance Report KY-332). However, all inspected straight spools showed no evidence of blistering or
. delamination and the linings were found to be hard and fully cured.
Therefore, the coating . failures found in the straight spools are
- considered not to be related to the problems associated with the
' large diameter elbows. -According to the coatings applicator, all coating operations were performed indoors.
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,j .4 DER 82 FINAL REPORT Page Four I' To resolve the subject condition the following corrective action has been/will be performed for Units 1, 2 and 3.
Unit 1
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A representative sample of 90* elbows and- straight spools (14 of each) have been inspected in Unit 1 by Bechtel Material and and Quality Services and the Field' Coatings Engineer. Results of this inspection showed one failure in addition to those previously described for Unit 1, and is documented in Nonconformance Report KY-311 (blistering and peeling has occurred in Spool No. 1-SP-068-S-024, a 20" diameter
. straight spool).. Within the sample of elbows inspected, of which all were found to have hard and fully cured linings, was Spool No.
1-SP-068-S-043. This spool is the only other large diameter elbow coated during the same time period as those identified in " Condition Description". Based upon the coating manufacturer's evaluation'that any lining failure that mighu occur should happen during flushing, hydrotesting or operational testing (as evidenced in the Unit 1 lining failures) and the absence of additional failures in the representative sample of Unit 1 large diameter elbows, no further inspection of Unit I was deemed to be warranted.
Nonconformance Report KY-296, KY-310, KY-311 and KY-312 will be dispositioned as repair in accordance with Piping Material Classifications, Drawing 13-P-ZZG-012, Plasite Repair Procedure No. 11 Units 2 and 3 Nonconformance Report KY-315 will be diepositioned as repair utilizing Plasite Repair Procedure No. 11 referred to above.
Separate Nonconformance Reports will be issued to disposition the Essential Spray Pond piping systems in Units 2 and 3. All 24-inch and 26-inch diameter 90* elbows installed in Units 2 and 3 and located in the Unit'3 laydown area are to be inspected. Per issuance of these Nonconformance ' Reports, the spools to be inspected will be subjected to the following acceptance criteria: 1) visual inspection; :2) holiday testing (if applicable); 3) dry film thickness; and 4) cure test. Each inspected spool will be dispositioned 'Use As Is' or ' Repair', with Plasite Repair Procedure No. 11 of' Piping Material Classification (13-P-ZZG-012) being used if repair is required.
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l - DER 82 FINAL REPORT Page Five
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l A separate NCR has been issued to disposition Unit 3 Spool ho.
3-SP-068-S-034'which was inspected and found to have high mil
- thickness. This spool has been filled three quarters full with Unit 1
. spray pond water. It has been left in the horizontal position for 59
' days and has been visually inspected on a weekly basis in order to-l duplicate as closely as possible the conditions experienced in the r Unit 1 lining failures. This inspection has been performed in i- accordance with the recommendations of M&QS Trip Report dated February 15, 1983 (Reference 2, attached).
After NCR's KY-356 and KY-357' vere issued, an additional inspection was
- conducted by Bechtel Material and Quality Services, Bechtel Engineering and Bechtel Field-Coatings Engineer on September 14, 1983. Spool No.'s ISP-030-S-041, ISP-030-S-042, ISP-030-S-043, ISP-068-S-040, ISP-068-S-041 and ISP-068-S-042 were inspected. From the investigation the following conclusions were reached:
l I 1) None of the linings observed during this inspection exhibited the
' failure mode seen in previous inspection, i.e., sheet delamination, entrained solvent, partially cured coating film.
. 2) Some localized defect were found, however these are considered minor h in relation to the' failure seen previously. For details, see M&QS Trip Report No. BED-093-16 (attached).
References ,
- 1) M&QS Trip Report, dated October. 34, 1982 (attached).
- 2) M&QS Trip Report,~ dated February 15, 1983 (attached).
'3) M&QS-Trip Report, dated August 23, 1983 (attached).
4)' M&QS Trip Report, dated September 15, 1983 (attached).
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BICHTEL GROUP, INC.
Researen and Engineering Materials and Quality Services Letter File No. DAH-102-15 Date October 14, 1982 .
To: Vas Naiarian _
From: D. A. Hill Location B49 Tel. 4392 Su'; ject: TRIP REPORT '
Date of Trio:
Project Name Palo Verde From 10-5-82 To 10-7-82 Project No. 10407-002 M&QS Log No. 2911-71 Project Spec. ho.
Destination: Palo Verde Jobsite Copies to:
J. W. Becker
/
/S. Sara Type of Trio:
W. C. Currlin B. D. Hackney C Supplier R. A. Keidel (Name)
R. A. White CClient
@ Jobsite.
PI'RPOSE OF TRIP:
Io investigate cause of f ailure of the lining of some sections of the 24" spray pond piping systen.
INTRODUCTION / DESCRIPTION OF PROBLEM:
Plasite 7122 has come off from the substrate of certain elbows and spools of unit 1 cupplied by Pullman Power Products Corporation and coated by Lundeen Company in coatings their shop in Fontana, California during 1980 and 1981.
CONCLUSIONS AND RECOMMENDATIONS:
The present facts indicate the cause of failure to be directly related to:
c) High film thicknesses beyond that of our spec and the coating manufacturers recommen-dations.
- b) Capping the pipe with solid caps not allowing a full cure - (7 days are needed for.12 to 15 mils).
The problem areas are directly related to high film thicknesses - over 16 mils. All spools in the lay down area should have their caps removed at both ends and inspected. Those of 16 mils and over should be considered suspect; those of 15 and under can be put in place of ter inspection and venting.
ACTION ITEMS .
- 1. Plasite is at present doing s< me investigation for us on the chips taken from Unit 1 (a sample paint chip is enclosed with this report).
- 2. D. A. Eill is at present trying to get a lab analysis of the " odor" taken from the spools in the lay down area to determine if there was anything added to the coating.
- 3. D. A. Hill 's at present investigating the possibility of getting an inspection made ,
of all of the Plasite lined piping 10" & 24" 1.D. using closed circuit TV (since at
, the present time we do not know the extent of our problem nor where the possible failed
! coacea pipe is locatea).
l 4. Since this is Q and records are available, a visit to Lundcen may give us a clue as
! to the extent of our problem, i.e. When was the pipe coated? A.M.? P.M.? Winter? Summer?
l and What sp'ools may be suspect? (RE: Lundeen's letter of October 5th - What is the '
batch # of the Plasite material? To what other lines was this material applied? etc.
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C C bECHTEL GROUP, INC.
Resear:h anc Engineering Materials and Quality Services Letter File No. DAP-102-15
- Date October 14, 1982 To: Vas Najarian From: D. A. Eill
Subject:
TRIP REPORT (continued)
Project Name Palo Verde Project No. 10!.07-002 M&05 Log No. 2911-71 PARTICIPANTS:
NAME COMPANY OR' PROJECT AFFILIATION AND TITLc5 Vas Najarian Project Engineering - Bechtel' Ralph Rothenberg Field Engineering - Bechtel Dave Crespo " " "
Steve Sara " "
Project ,
Charles O'Neal Inspection QET "
1 DETAII.S OF INVESTIGATION:
- 1. . Preliminary meeting with Vas Najarian & Ralph Rothenberg - learned the following:
- How many feet of spray pond piping per unit? 1500' of 24" I.D. , 4 lines 10" 1.D.
2200' per unit
- All considered Q
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- 111 piping capped with solid caps - after being " fully cured"
- Lundean had. come to the site with Pullman on Sunday, Sept. 5 and inspected " Failed" coating on 3 elbows & 4-24" I.D. lines.
- 2. We went as a group to the lay down area and uncapped 5 pipe all 24" I.D.
- 70% of all readings were over 15 mils but none higher than 21 mils.
- A "round the cicck" reading of spool #35P005SO42 was indicative: M readings for selected spool #3SP025SO42: a
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,9 ,2 6 s 7 si I tb so lo, no 2 e5 *I
( y gg.g. Tai 9.pt. is T k 3 8T //ccf 84 N,9 4 #
,')5o9 l
g 6 f.4of I4 os (This indicates that the 3600 spray used was "off center" giving high'er mileage in certain areas).
- A Tooke Gauge indicated the following (Pipe 3SP-30-S-032) .
1st application at 9 mils - grey
! 2nd application at 6 mils - white l Cas pockets in both coats but not extensive 4 pipe sections had a solvent odor; the last one opened had a definite amine odor as opposed t.o a solvent smell. (Plasite 7122 is an amine cured) .
[ - Paint chips taken from in place spools of unit one all indicate file. thickness over l 15 mils - 95% of the readings are'over 19 =ils with many rea:!ings as high as 23 mils
& 25 mils.
- 3. The last area of investigation was an in pla:e 24" section of pipe of unit 2 - this
( pipa had Aman prancere lasted with standing water for a cinim'.r of 3 days. .
i . General condition of pipe - excellent, no blisters, cracks or any sign of bre~ak-down. No oder of solvent or amine. Mil thicknesses 13 mils - no reading over 16 mils'(These pipe sections had been capped with solid caps and had been in the ,
l- lay down area prior to placement)'.
l g. M&QS REPRESENTATIVE:
- 1. e-g8
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b- w- & m, ,ji W
- Dana 7 af - 7 ' ' b;
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Res'e'arce anc Engin erine Materials anc Quality Servi:es A etter File No. DAH-023-08 Date February 15, 1983 To: R. A. Keidel From: B. E. Dullum/D. A. Hill Location B49 Tel. 4392
Subject:
TRIP REPORT . - - Date of Trio:
Project Name Palo Verde From 2-1-83 To 2-2-83 f Project No. 10407-002 M&QS Log.ho. 1221 ,
Project Spec. ho. :
Destination: Palo Verde Jobsite Copies to: W. Bingham W. Miller J. Black V. Najarian T.ype of TriD*
W. Currlin R. Rothenberg B. Hackney /R. White C Supplier T. Horst ame)
Reference:
- 1. DAH-102-15, 10-14-82, Trip to PVNGS DClient (hame)
- 2. BED-013-19&20, 1-12-83, Trip to PVNGS E Jobsite
- 3. DAH-013-37, 1-21-83, Trip to Lundeen
- PURPOSE OF TRIP:
Tha purpose of the trip was two-fold:
- 1. Inspect Plasite 7122H Epoxy-Phenolic lining of essential spray pond piping system in unit 2'and lay-down storage area. ^- C ' ' C
- 2. Heet witn personnel from sechtel Engineering, Construction and Supplier Quality along _with representatives of Controlled Coatings (Lundeen), Pullaan Power and Wisconsin Protective Coatings (Plasite).
INTRODUCTION / DESCRIPTION OF PROBLEM:
Th2re is concern that a possible generic problem exists with the Plasite 7122H in the
! Escential Spray Pond Piping System. For details, see previous reports referenced above.
Methods and Results of Inspection:
- 1. The Plasite lining in most of the Ells inspected indicates the saterial to have excessive dry film thickness, however there is no evidence of failure er incipient failure in any of the Ells inspected. The examination was primarily confined to visual examination , solvent odor detection and dry film thickness j measurements. However, some solvent spot testing and destructive adhesien testing was performed.
! 2. A straight pipe spool (No. 3S079-S010) installed in unit 2 was found to be defective due to thin dry film and minor pinholes. The nature of the problem appears to be due to improper application and is not considered to be related to coating failures seen previously in unit'1. The defective coating is to be reworked as necessary.
CONCLUSIONS & RECOMMENDATIONS:
,, The Plasite'7122H lined pipe spools inspected on-February 2, 1983 are expected to ,
ua perform as designed. Based on observations and testing performed, no failures of
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'[I a generic nature are anticipaced.
Discussion iq f Immediately following the morning inspection, all participants met to discuss E
(E*e page 2) '
Page 1 of 2
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1 EEZE. GR0i,F. IN;.
Resh et?. an Engine ing f 5
' Meterials an: Quality Stevices Letter File NO. DAE-023-06 t;
Date February 15. 1983 A. Keidel TC: F.. Frc:.: E. E. Dun um/D. A. F' Sueje::: TRIe REDORT (continued)
, y' Proje:t Name Pale verde Proje:t Nc. loc.07-oo: M&OS Log ho. 1221 i
PARTICIPANTS: - -- ' -
NAME COMPANY OR' PROJECT AFFILIATION AND TITLES R. S. Rothenberg Bechtel Power Corp. , AIDFE - Piping B. Oyama " " " :
D. Eshleman " " "
, Plant Design Engr.
M. Karbassian " " "
, Supplier Quality Supv.
R. Cook " "
Resident Engr.
D. Crespo " "
" , Yard Piping AFF Coatings FE J. Jackson " " "
, U-3 Piping QCE -
R. Garrett " "
" , U-3 Piping AFE AUI/EPDT K. Carrillo " "
D. Eill
" , U-3 Piping LAFE l, E. Dun um Bechtel Group Inc.,"
H&QS Coatings Coordinator j
. M&QS Specialist !
A. Hendricks Wisconsin Protective Coatings - Tech. Dir.
J. Swanson Pullman Power D. Ostler Controlled Coatings 2
CONCLUSIONS & RECOMMENDATIONS (Continued): .
i.
l disposition of DER 82-51. At that time the fonowing was agreed upon by an:
1.-
The condition of the Plasite lined pipe observed in the morning inspection is good.
l However, none of the spools observed have been subjected to service con'itions. d To approximate service condition, one spool (No. 3-SP-068-S-034) is to be fined 3/4 of the way full for a period of time not less than 30 days. This spool will then be drained, inspected and the results reported. Currently this is an action item for field construction.
- 2. Pipe spools coated by mechanical spray application are considered much less suscap- k' tible to possible coating failure. This includes all straight spools and 45' Ens. ;
At the time of this writing there have been no documented failures of a straight spool or a 450 En due to delamination or blistering of a mechanicany applied '
coating. The use of mechanical spray equipment allows for better control of spray l application resulting in a more uniform deposition of the coating film. Also, the. ,
l coating application process and cure is performed over a 7-day period which anows l
sufficient time for solvents to release durir.g the chemical curing of the film.
- Manual application of Plasite 7122 H was performed on approximately 30-90* Ells l
' per unit (90 total). This was done to ensure that all areas of the band which may be inaccessable to mechanical application equipment are coated. In the process of hand held manual coating there are usuany many overlaps and a tendency to overbuild the coating film. Also, according to Controlled Coatings, the application period for the n.anuany applied coating was reduced to 3 days compared with a seven-day
.w, process used to coat mechanicany. This reduction in cure time could be critical, MC
- b especiany in wintertime when chemical curing & solvent evaporation tends to be ,
retarded. It was agreed that pipe Ells 24" and over, lined using a manual applica -
! 9 tion are most susceptible to failure due to solvent entrapment. The condition is I l g[ further aggravated by capping the pipe spools using rubber gaskets and unvented I sy carbon steel nange plates. Materials and Quality Services recommends that future E{ inspecAions beinc N*L Wto 90' E ns, 24 " or larger. s page 2 of 2.
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__ - _ _ , _ . _ _ _ _ _ _ , _ ~ . . _ _ . . . _ _ . _ _ _ . _ _ .
ATTAC101ENATO DER 82-51 BECATELGROUP,INC.
Res: arch and Engineering Mat.erials and Quality Services , Letter File No. BED-08 3-21 Date Aucust 23. 1983 To: R. A. Keidel From: B. E. nu11u- Location nao Tel . 807-4 387 subject: TRIP REPORT oate of Trio:
Project Name Palo Verde From 8-17-83 To 8-18-83 ,
Project No. 10407-002 M&QS Log No. 1931 l
REFERENCE:
- 1. DAH-102-15, 10-14-82, Trip to PVNGS Destination: Palo Verde
- 2. BED-013-19 & 20, 1-12-83, Trip l to PVNCS Type of Trip:
- 3. DAH-013-37, 1-21-83, Trip to Lundeen C Supplier ;
4 DAH-023-08, 2-15-83, Trip to (Name)
PVNGS Client , l COPIES: J. W. Becker W. Bingham (Name) ,
J. Black D. Crespo O Jobsite
- W. Currlin B. D. Hackney /R. A. White D. A. 1(111 H, y N. Najarian
..d/a B. Oyama/M. Radoccia R. Rothenberg/J. Niessen
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PURPOSE 0F' TRIP:
Inspect Plasite lining of essential Spray pond piping system spool nos. SP-068-S-040 .
and SD-030-S-040.
INTRODUCTION / DESCRIPTION OF PROBLEM:
l At the request of field engineering,:Interials and Quality Services was requested to evaluate reported failures of the Plasite 7122 lining of the spray pond piping system.
These reported failures are documented in Non-Conformance Report KY-357 and are I
directly related to previous failures noted in Deficiency Evaluatior Report No.
82-51 (NCR's KY-296 & KY-315).
CONCLUSIONS AND RECOMMENDATIONS:
The lining failure of Spool No. ISP-068-S-040 represents the fourth Ell to date which has been found to have a defective Plasite 7122 lining. Each Ell has exhibited the same mode of failure, i.e.
l 1. Complete delamination of Plasite 7122 from pipe.
l 2. Excessive entrained solvent in the coating film.
l
- 3. The film appears to be in a semi-cured condition, lacking the integrity of a fully cured film.
l This failure is consistant with that encountered in previous failure analysis. The l coating f ailure is caused by one or more of the following.
- 1. Premature pipe capping.
- 2. Overhuild of coating film.
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,m 3. Manual application causing irregular excessive film build.
y0 4. Application of coating during winter months.
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BECHTEL GPOUP, INC.
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Research and Engineering Materials and Quality Services Letter File No. BED-083-21 Date August 22, 1983 To. R. A. Keidel pg. B. E. Dullum
Subject:
TRIPREPORT(continued)
Project Name Palo Verde Project No. 10t.07-002 M&QS Log No. io u PARTICIPANTS:
NAME COMPANY OR' PROJECT AFL .IATION AND TITLES Ralph Rothenberg Bechtel Power Corporation. Assistant Lead Field. Engineer Jerry Niessen , Lead Field Engineer David Crespo , Coatings Engineer Jerry Swanson Pullman Power, Engineer Stephen Engler , Plant Superintendent Daryl Ostler Controlled Coatings }
Bruce Dullum Bechtel Group Incorporated, Coatings Specialist j DETAILS OF INVESTIGATION (discussion of observations, action taken and other pertinent data):
The first Ell inspected was ISP-030-S-040. There was one blister in the invert of the pipe which was the result of mechanical damage. The damage observed here was localized to about 4 square inches and was not indicative of the type of failure seen in'the past (No solvent odor). The remainder of the coating is in good condition and tightly adherent.
Initial visual inspection of spool no. SP-068-S-040 revealed 10-15 blisters ranging in size from to 3 inches in diameter. Destructive examination revealed:
- 1. Total loss of adhesion.
- 2. Strong Solvent Odor.
- 3. Flexable Semi-Cured Film.
- 4. Unknown Odor (mushy).
Pipe spool ISP-030-S-040 is to be repaired locelly.
Pipe spool 1SP-068-S-040 is to be completely relined.
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M&QS REPRESENTATIVE:
8 3$' .
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" ATTAC10fENT TO DER 82-51
, BECUTEL GROUP, INC. '
3gG Research and Engineering Materials and Quality Services Letger File No. BED-003-16
. Date: September 15,*1983 To: R. A. Keldcl From: B. E. Dullum' .
. _ __ . ,, _ ,_ . Location B49 Tel. 807-4387 Subj ect: TRIP REPORT. , .
Date of Trip:
. . _ , _ . _ . . . _ . . . Project Name: Palo Verde Nuclent Gen.Sta.
.Proj ec t No. 10407-002 M&OS Log No. 2001 From: ' September'Ji, 1983 Project Spec.No. N/A
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, Destination: Palo Verde Johsite Copics To: V. Najarian -
R. S. Rothenberg/G.J. Niessen Type of Trip: .
J. Black B. Oyama/ Mike Radoccia Jobsite W. Miller -
A. Priest B. D. Hackney / R. A. White .
D. A. Hill Dave Crespo 1
REFERENCE:
DAH-102-15, 10-14-82,- Trip to PVNGS; BED-013-19 & 20, 1-12-83, Trip to Pr.
DAH-013-37, 1-21-83, Trip to Lundeen;DAH-023-08, 2-15-83, Trip to PVNGS;
. ...-.. _.. m.. BED-083-21,_8-23-83. -
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PURPOSE OF TRIP: .
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Inspect Plasite lining in the spray pond piping system.
, INTRODUCTION / DESCRIPTION OF PROBLEM:
At-the request-of Construction, M & QS was asked to perform another inspection of the Plasite lining,in six (6) spools in the spray pond piping system. The Unit I
' spools in question are SP-030-S41, SP-030-S42, SP-030-S43, SP-0,68-40, SP-068-41, SP-068-42.
CONCLUSIONS AND RECOMfENDATIONS:
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' 1) None of the linings observed.during this inspection exhibited the failure mode seen in previous inspection. i.e. Sheet delamination, entrained solvent, partially cured coating film.
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- 2) Some localized defects were found, however these are considered minor in relation to the f ailure seen previously. For details, see description of investigation.
DESCRIPTION OF INVESTIGATION SP-068-42 The spool has been relined in the field with PJasite 9009-17 and the dry film
' thickness ranges from 15 to 18 mils. The condition of .the lining is good except for 'onc minor area. There are no blisters, no entrained solvent and no delamination.
'There is huwever one pinpoint rust spot-which will be touched up. .-
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- [S,C_RIPTIONOFINVC."TICATION(Continu..}
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/ SI-068-41 7 completely rclined in the field with Plasite 9009-1T to a dry film thickness
< of approximately 15 mils. The condition of the lining is good.
SP-068-40 This spool was inspected on 8-18-83 and details of inspection documented in Trip Report BED-083-21 dated 8-23-83. For previous inspection and repair see NCR No. KY-312 dated 1-10-83. ,
SP-030-S4 3 ._ _ _ ,
The Plasite 7122 coating is in good condition with no blisters, no solvent
' retained and no delamination probicms.
The spool has been relined in the field using Plasite 9009-lT. The dry film '
is 16 mils average. There is slight mechanical damage at the flange which t-is to be repaired. The Plasite lining is in good condition. I v
SP-030-S42 The spool has been relined in the field using Plasite 9009-lT. There are three (3) blisters 1/4' to 1/2"in diameter. These were broken with a knife ;
and examined for entrapped solvent; none was apparent. Also, the coating around the perimeter of the blisters was checked for adFesion and was de-
- termined to bb good. The cause of the blistering appears to have been in '
, .the application. --- -': 0 -. - - -
PARTICIPANTS: COMPANY OR PROJECT AFFILIATION AND TITLES Dave Crespo Coatings Engineer, Bechtel Power Corporation -
Bruce Dullum Costings Specialist. Bechtel Group Incorporated R. S. Rothenberg . Piping Engineer, Bechtel Power Corporation ,
Brad Oyama . Piping Engineer, Bechtel Power Corporacion, Downey tbhammed Karbassian Resident Enginect, Bechtel Power Corporation
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0tWc $. 0 W 252
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B. E. Dullum Coatings Specialist .
',;- BED /RSR/mlb 6
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