ML17275A864

Notifies That IE Requested That Encl Preservice Insp & Test Requirements for Snubbers Be Included in Licensing Process. Requests That Requirements to Insure Snubber Operability Be Implemented

ML17275A864
Person / Time
Site:	Columbia, Washington Public Power Supply System, Satsop
Issue date:	03/06/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Ferguson R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
References
NUDOCS 8103120186
Download: ML17275A864 (9)

Text

MAR 6 )ggt Docket Nos.:

0/513

-39 STN 50-508/509 Washington Public Power Supply System ATTN:

Mre R. L. Ferguson Managing Director 3000 George Washington Way P. 0.

Box 968 Rich'l and, Washington 99352 bcc:

Dist.

l Docket Fiiles (~)

LB81 Rdg DEisenhut BJYoungblood NRoshhrook l9)

RTedesco RVollmer TMurley DRoss RHartfield, MPA VNoonan OELD DIE.

31 ')

~ f', ggrggr(3) 3 TERA NRC/PDR L/PDR NSIC TIC 4CX ACRS (16)

SUBJECT:

'RESERVIBE INSPECTION AND TESTING OF SNUBBERS FOR WNP UNITS 1 THROUGH 5.

The Office of Inspection and Enforcement has requested that preservice inspection and test requirements for snubbers be included in the licensing process.

Based on this request and the long history of snubber problems as documented by Licensee Event Reports on the subject of inoperable and incorrectly installed snubbers, it is requested that the enclosed require-ments to insure snubber operability be implemented at the WNP Units 1 thLdugh 5.

Sincerely, arlgthaI sIfP8d by a0b8ra L...~~. ~

Robert L. Tedesco, Assistant Director for Licensing Division of Licensing

Enclosure:

As stated cc w/enclosure:

See next page 8293jL29 rY4 0FFiCE>

~ ~

RNAMEp MDLynch/ys

,,E P 8/eP JY lood

/81

~ ~

RL esco 3/5'/81 NRC FORM 318110/801 NRCM 0240 OFFICIAL RECORD COPY 0 USGPO: 1980-329.824

0 1

P f'

yd ba,y;g

)g,))~-.~pi

~~>>> > 8~8

)I h

f r

g'

~

~

~ 1 i~1r.

R. L. Ferguson Managing Director Washington public

$qvger Suppjy

$gstem 0.

Box 968

~

3000 George Washington May Richland, Mashington 99352

, cc:

Nichola's S.

Reynolds, Esq.

DeBevoise 8 Liberman 1200 Seventeenth St.,

N.

M.

Washington, D.

C.

20036 Richard g.'uigley, Esq.

Washington Public Power Supply System 3000 George Washington May

Richland, Washington 99352 Nicholas D. Lewis, Chai rman Energy Facility Site Evaluation Council 820 East Fifth Avenue Olympia, Washington 98504 lIr. Kenneth W.

Cook Washington Public Power Supply System P.

0.

Box 1223 Elma, Washington 98541 Yir. Thomas W. Bishop Washington Public Power Supply (WNP-3/5)

U. S. Nuclear REgulatory Comnission P.

0.

Box 1156 Olymphia, Washington 98507

Hr.

R. L. Ferguson Managing Director Washington Public Power Supply System P.

0.

Box 968 3000 George Washington

'Hay Richland, Washington 99352 cc:

Mr. V. Mani Urfited Engineers 5 Constructors, Inc.

30 South 17th Street Penns lyvani a 19101 Nicholas S.

Reynolds, Esq.

DeBevoise 8 Liberman 1200 Seventeenth St.,

N.W.

Washington, D.

C.

20036 Mr. E.

G.

Ward, Senior Project Manager Badcock 5 Wilcox Company

, P.

0.

Box '260 Lynchburg, virginia 23505 Robert Lazo, Esq.,

Chairman Atomic Safety and LIcensing Board U.

S. Nuclear regulatory Commission Washington, D.

C.

20555 Dr. Donald P.

deSylva Associate Professor of Marine Science Rosenthiel School of Marine and Atmospheric Science University of Miami Miami, Flori da 33149 Richard S.

Salzman, Chairman Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Coranission Washington, D.

CD 20555 Dr. John H. Buck Atomic Safety and Licensing Appeal Board U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555 Jerome E.

Sharfman Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Resi dent Inspector/WPPSS NPS c/o U. S.

NRC P.

0.

Box 69

Richland, Washington 99352

Nr.

R. L. Ferguson Nanaging -Director Washington Public Power Supply System P.

0.

Box 968 3000 George Washington Way Richland, Washington 99352 ccs:

Nicholas

Reynolds, Esq.

Debevoise 5 Liberman 1200 Seventeenth

Street, N.

W.

Washington, D.

C.

20036 Richard g. guigley, Esq..

Washington Public Power Supply System P.

0.

Box 968

Richland, Washington 99352 Nicholas Lewis, Chairman Energy Facility Site Evaluation Council 820 East Fifth Avenue

'lympia, Washington 98504 Nr. 0.

K. Earle Licensing Engineer P, 0.

Box 968 Richland, Washington 99352 Nr. Albert D. Toth Resident Inspector/WPPSS-2 HPS c/o U. S.,Huclear Regulatory Commission P. 0. Box.69 Richland, Washington 99352

TO ALL APPLICANTS:

. ~

Due to a long his'tory of problems dealing with inoperable and incorrectly installed snubbers, and due to the potential safety significance of failed snubbers in safety related system's and components, it is requested that maintenance records for snubbers be documented as follows:

Pre-service Examination A pre-service examination should be made on all snubbers listed in tables 3.7-4a and 3.7-4b of Standard Technical Specifications 3/4.7.9 This exami-nation should be made after snubber installatiaa. but not more than six-months prior to initial system pre-operational

testing, and should as a mimimum verify the following:

(1). There are no visible signs of damage or impaired operability as a

=

result of storage,

handling, or 'installation.

.(2)

The snubber location, orientation, position setting, and configuration (attachments, extensions, etc.) are according to design drawings and specifictions..

(3)

Snubbers are not seized, frozen or jammed.

(4)

Adequate swi'ng clearance is provided to allow snubber movement.

(5) 'If applicable, fluid is to 'the recommended level and is not leaking from the snubber system.

(6)

Structural connections such as pins, fasteners and other connecting hardware such as lock nuts, tabs, wire, cotter pins are installed correctly.

If the period between the initial pre-service examination and initial system pre-operational test exceeds six months due to unexpected situations, re-examination of items 1,4, and 5 shall be performed.

Snubbers which are

~installed incorrectly or otherwise fail to meet the above requirements must be repaired or replaced and 're-examined in accordance with the above criteria.

Pre-0 erational Testin Dui ing pre-operational

testing, snubber thermal movements for systems whose operating temperature exceeds 250' should be verified as follows:

(a)

During initial system heatup and cooldown, at specified temperature intervals for any system which attains operating temperature, verify..

the snubber expected thermal movement.

(b)

For those systems which do not attain operating temperature,.verify via observation and/or calculation that the snubber will accommodate the projected thermal movement.

(c)

Verify the snubber swing clearance at specified heatup and cooldown intervals.

Any discrepencies or inconsistencies shall be evaluated for cause and corrected prior to proceeding to the next specified interval.

'0 The above described operability program for snubbers should be included and documented by the pre-service inspection and pre-operational test programs.

The pre-service inspection must be a prerequisite for the pre-operational testing of snubber thermal motion.

This test program should be speci fied in Chapter 14 of the FSAR.

I r

~

~

~

1

~

It

+<~o, ".,

1'~.f