ML20058J686
| ML20058J686 | |
| Person / Time | |
|---|---|
| Issue date: | 08/08/1990 |
| From: | Richardson J, Taboada A Office of Nuclear Reactor Regulation, NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Miraglia F, Speis T Office of Nuclear Reactor Regulation, NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML20058J272 | List: |
| References | |
| JCCCNRS-WG-10, NUDOCS 9012020153 | |
| Download: ML20058J686 (9) | |
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L NITED STATES
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WASI IINGTON, D. C. 20566
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'p AUG 0 81990 MEMORANDUM FOR.
Fr:nt J. Miraglia, Deputy Director-Office of Nuclear Reactor Regulatioi Themis P. Speis, Deputy Director for Research' Office of Nuclear Regulatory Research FROM:
James E. Richardson, Director Division of Engineering Technology Office of Nuclear. Reactor Regulation Alfred Taboada, Senior Materials Engineer-Materials Engineering Branch Division of Engineering _
Office of Nuclear Regulatory desearch
SUBJECT:
TRIP REPORT - JCCCNRS WORKIN3 GROUP 10 MEETINGS
[
Enclosed is the trip report of the JCCCNRS Working Group 10 on-
"Eroson/ Corrosion of Piping and Components"-held.in the USSR from June 22 - July 6, 19 44 k"
-Ja s E. Richardson,' Director Division of Engineering Technology, NRR -
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' fAr A11' red Taboada, Senior Materials Engineer Materials Engineering _ Branch Divfsion.of-Engineering, RES
Enclosure:
As Stated cc:
J. Taylor L. Shao V. Sniezek R. Bosnak T. Murley C. Serpan W. Russell E. Shomaker E. Beckjord M. Cullingford
.9012020153 900023 <.
REV0PNRogUR PDR J
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TRIP REPORT FOR JCCCNR5 WORKING GROUP 10 Official Travelers:
J. E. Richardson Travel to:- USSR 1
A. Taboada P. Wu (D0E)
Beginnininc on 6/22/90 C. Czajkowski - BNL)
Ending en 7/6/90 M. J. Wootten Westinghouse)
G.Gordon(G.E.')
Office:
Meeting
Title:
Working Group 10 Meetings on " Erosion / Corrosion of Piping and Components" s
Organized By:
Joint Civilian Coordinating Committee for Nuclear' Reactor Safety (JCCCNRS).
i The Joint Coordinating Committee on Civilian Nuclear Reactor Safety-(JCCCNRS)
Working Group 10 on Erosion / Corrosion of Piping and Components met in Moscow, USSR, on June 22 - July 6,1990, to discuss the following topics:
1.
Water Chemistry Regimes for Pressurized Water l Reactors (PWR) and Boiling Water Reactors (BWR) in Nuclear Power Plants; 2.
Separation and Transport of Corrosive Products; 3
3.
Non-Destructive Examination Techniques _for Monitorint=. Degradation of Components Due to Erosion and Corrosion;
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4.
'Research on Corrosion-Erosion Alternatives on.New Materials.
A sununary of the meeting along with a li;t of U.S. and USSR participects and a list of documents exchanged are given in the enclosed. Memorandum of Meeting of I
Wcrking Group 10 signed by the Working Group Co-Leaders, J.- E. Richardson and I. A..Stepanov.
In addition to the Working Group 10 meetinc held at the Kurchatov. Institute, the U.S. team visited several laboratories and nuclear power: plants as shown 1
in the enclosed itinerary.
The following is a brief summary of those visits:
All Union Scientific Research~1nstitute of Nuclear Power at'Electrogorsk' 1.
l This is a relatively new departmert within the All Union Scientific f'
Research-Institute.
Most of their programs are in the proposal stage.
However, they do have several impressive cr. going and proposed l
experimental procrv.s to study the effects of. erosion / corrosion.
Cata from these expertnents could be used to validate computer programs that predict erosion, corrosion wear rates.
They also have several ongoir.g erosion /corrosson experiments at an old fossil steam plant next door to l
tha instititus. 'In addition, they are conducting experiments on a new design for a jet pump to be used in'their advanced passive reactors.
Research and Development Institute of Power Energy and Science-Production 2.
Cooperation of Heavy Machine Building, Moscow These two laboratories are conducting experiments in the areas of corrosion, water chemistry, corrosion mechanical strength, corrosion-resistant material and corrosion control methods. Although the equipment being used was old and simple in--nature, the scientists and engineers were carrying out rather elegant experiments to better understand the erosion / corrosion process and to develop methods.and They mdterials to prevent or slow down the rate of erosion / Corrosion.
are also doing some good work investigating crack behavior of pressure-vessel beltline welds and corrosion fatigue.
3.
Kurchatov Atomic Energy Institute MR Reactor. Moscow I
This is a small pool re&ctor.that has a great deal of versatility-by It is a conducting many simultaneous experiments on water chemistry.
powerful research facility. Within this facility is the place where Dr.
Kurchatov built the first reactor pile in the USSR.-
All Union Scientific Research Institute of Atomic Machine Building, Moscow 4.
c This laborhtory is conducting research on the prevention of erosion / corrosion.
They have developed a passivation process using Octadecylamine (0DA) to inhibit erosion / corrosion in carbon and low alloy.
steels for single and two phase flow.
Experiments have shown that ODA is successful in inhibiting erosion / corrosion and has been applied in a few power plants.
It is not clear. that theyl have evaluated the-effects of '
ODA on other systems and components. that may be detrimental. Also, they l
have not connunicated the facts about ODA to other institutes or The plant managers at the Leningrad 1 (RBMK) and the organizationc.
U.S.
Zaporazhie (VVER) nuclear power plant had never heard of ODA.
industry may be interested in finding out more about 00A-and possible applications in U.S. plants.
Central Research Institute of Structural Materials, "Prometey," Leningrad 5.
"Prometey" is a large, well equipped materials laboratory that is funded mostly by tia military. The laboratory was founded in the early 1940's to develop arnar plate for tanks.
Later, they got'into naval. materials to develop materials resistant to brittle fracture. More recently,. they have been involved in testing nuclear power plant (6aterials.
They have a series of about 16 test chambers for testing large scale heavy section L
vessels and other cmponents to failure at temperatures from mirus 180*C to 1300*C.
Thg nave conducted failure tests of pressure vessels similar
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to the HSST program.at Oak Ridge National Laborotory.
They have also cunducted pressurized thermal shock experiments on large, heavy section pressurized vessels.
In addition, the Pometey laboratory is conducting research in the areas of welding, brazing and non-destructive examination. This laboratory was, by far, the best equipped and most l
sophisticated laboratory we visited in the USSR.
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2 Commissioner Remick and Mr. Richardson met with.the' Director of Pometey,.
Academician 1. V. Gorynin. Mr. Gorynin stated that he had written to.
Eric. Beckjord (RES) proposing cooperation. He was disappointed'in i
Beckjord's reply referring the proposal to the JCCCNRS for. consideration.
He provided Commissioner Remick with a new pro)osal for consideration.
it is apparent that Mr. Gorynin would like to 1 ave a separate agreement-with the NRC or some U.S. laboratory that-is outside the.JCCCNRS -
agreement.
It should be noted that-' staff from the Prometey laboratory
-l have participated in Working Groups 3 and 10.
It may be worthwhile for somebody from the RES Materials Engineering Branch to visit the Prometey laboratory to see if cooperation with Prometey would be beneficial _ to the NRC.
6.
Lenirgrad 1 Nuclear Power Plant Th.: Leningrad 1 nuclear power plant is an RBMK reactor located on the Bay o Finland. This plant is serving as the lead,for safety improvements to te applied to other RBMK's in the USSR. The following observations were made:-
Fire prr.tction appeared to be minimal (no separation of vital a.
equipment, very little in the way of fire suppression, long corridors with no fire doors).
b.
One operator in the control room.
i Many plant personnel walking around apparently without dosimetry.
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7.
Z_aporozhie Nuclear Power Plants l
There are six VVER-1000 units at Zaporozhie (five_ operating and one near l
completion). The following observatins were made:
They are having serious problems with cracking in the carbon steel a.
tube sheet (header) in their steam generators. The steam' generators are horizontal with stainless steel tubes exp.losively The cause of the' cracking welded.to the carbon steel tube' sheet.-
appears to be corrosion and/or corrosion assisted fatigue.
They-plan to replace all of.the steam generators in all units in the near-future.
(Steam generators in Units 1 and 2 have already been replaced.) The new steam generators will have tubes that are hydrdulicly expanded into the tube sheet.
They also said that steam generators will eventually be replaced at all VVER-1000. plants iri the USSR.
It was reported that only four tubes have been plugged to j
It appears that they do very little eddy current examination date.
of the tubes and allow the tubes to leak before phgging is
- employed, j
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4-l The USSR method of contamination control and ALARA record keeping is b.
quite different from U.S. methods. The USSR does not use dosimetry This would tend to.
for personnel in: areas of 3.5 mr/hr or less.
No dosimetry was explain their significantly lower dose rates.
i observed on USSR personnel at the plant.
1 The There was no real. intrusion protection at the control room.
c.
only doors were wooden, The control room had several computer displays of_ safety' parameters d.
similar'to U.S. plant SPDS. However, the same displays are not installed in their emergency-center.
There wore no ripe whip restrailts on any large piping systems..
Some sway supports (not snubbersi'were evident but few and f ar-e.
The plant appeared to Le vulnerable. to seismic' events, between.
f.
At least one leaking pipe had a weaden wedge hammered in to stop' leakage.
The in-line monitoring of water chemtstry was not fully automated.
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A non-continuous grab sample type system is used.
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JUNE 22 FRIDAY 10.35.
Arrival to "Sheremetievo"
' Accommodation in the hotel-15.00.
Meeting _of USA delecation I
with the leaders.of Soviet side of JCCNRS and working l
groups leaders.-
Disseussion of'the n-bgram i
I of the visit ano.the agendas of the meetings JUNE 23 Free time SATURDAY Social program JUNE 24 Free time SUNDAY Social program JUNE 25 MONDAY 10.00-17.00 WG-3 meeting i
10.00-17.00 'WG-6 meeting j
1 10.00-17.00 WG-10 meeting l
l JUNE 26 i
TUESDAY S.00-19.00 WG-6, WG-10, JCCNRS i
Visit to Elektrogorsk l
9.30-17.00 WG-3 meeting L
I 8.00-19.00 Remic group j
Participation in.
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NESU-90 conference JUNE 27 WEDNSDAY 9.00-17.00 WG-6 meeting 9.30-17.00 WG-3 meeting 9.30-17.00 WG-10 meeting f
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JUNE 28 THURSDAY 9.30-17.00 WG-6 meeting l
h 9.30-17.00 WG-3 meeting 9.30-17.00 WG visit to NIKIET a NIIMash 19.00 Reception party on behalf of JCCNRS Soviet' Side JUNE 29 FRIDAY 2
WG 6 final meeting 9.30-17.00 Signing of Memorandum 9.30-17.00 WG-3 final meeting Signing of Memorandum 9.30-17.00 WG-10 visit to IAE &-VNIIAM JUNE 30 SATURDAY 11.00 Departure to USA WG-3(except Hawthornes)
WG-6 12.00 Departure to Leningrad WG-10 JCCNRS Remic group Hawthornes r
JULY 1 SUNDAY Leningrad Free time o
Social program J
JULY 2 MONDAY 9.00-18.00 Leningrad Visit to CNIIKM "Prometey" l'
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JULY 3 TUESDAY 9.00-18.00 Leningrad Visit to NPP 12.00 Leningrad Hawthornes departure to USA JULY 4 WEDNSDAY Departure to Zaporo: hie JULY 5 THURSDAY Energodar:
Visit to NPP..
Departure to Moscow-JULY 6 FRIDAY 10.00-17.00 WG-10 final meeting Signing of Memoranoum JULY 7 SATURDAY Free time Social program JULY S SUNDAY Departure to USA l
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I AGREEMENT ON THERMAL-HYDRAULIC RESEARCH.
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