ML20237J625

Inservice Insp Rept for 840701-851207.Listed Components or Appurtenance Inspected for Conformance W/Asme Boiler & Pressure Vessel Code Section XI

ML20237J625
Person / Time
Site:	Calvert Cliffs
Issue date:	06/09/1986
From:	Lawrence R, Thorton A BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20237J585	List: ML20237J583 ML20237J625
References
NUDOCS 8708260241
Download: ML20237J625 (7)

Text

- _ _ - _ - _ - __ ._-____ __ - __ _ ___ _ _ _ - - _ - _ _ _ _ _ _ - _ . _ _ _ _ _ _ _ _ - _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ - _ _ _ _ - _

r .) .

!; .  ?

l l

- ENCLOSURE (1)

To BALTIMORE GAS AND ELECTRIC COMPANY'S INSERVICE INSPECTION REPORT FOR CALVERT CLIFFS UNIT 2  ;

ASME BOILER AND PRESSURE VESSEL CODE SECTION XI, FORM NIS-1 n.

8708260241 860924 PDR ADOCK 05000317 G PDR

l ," . DATE: June 9,1986 NIS-1 PAGE 1 of 4 FORM NIS-1 FORM NIS-1 OWNER'S DATA REPORT FOR INSERVICE INSPECTIONS (As Required by the Provisions of the ASME Code Rules) 1.. Owner: Baltimore Gas and Electric Company P.O. Box 1475 Baltimore, MD 21203

2. Plant: Calvert Cliff s Nuclear Power Plant Lusby Post Office Lusby, MD 20657

3. Plant Unit: h2 4. Owner Certification of Authorization: NA

5. Commercial Service Date: 6. National Board Number for Unit:

April 1,1977 20912

7. . Components inspected:

COMPONENT MANUFACTURER MANUFACTURER STATE NATIONAL OR 'OR OR INSTALLER OR BOARD APPURTENANCE INSTALLER SERIAL # PROVINCE # NUMBER Reactor Combustion CE-67108 14001NY 20912 Pressure / Engineering Vessel Reacto- Combustion CE-67208 14001NV 20912 Pressure Engineering Vessel Closure Head Steam Combustion CE-67306 14001NV 20925 Generator Engineering

1. 21 Steam Combustion CE-67307 14001NV 20924 Generator Engineering

1. 22 i Reactor Combustion Contract No. '

Coolant Engineering 72467 Pipe-Drain Lines Bechtel f/21 A Reactor Byron Jackson SN-0441 63-1-N-0-441 Coolant Pump ~

j

1. 21B Reactor Byran Jackson SN-0442 68-1-N-0442  ;

Coolant Pump

1. 22A Reactor Byron Jackson SN-0443 68-1-N-0 443 l Coolant Pump l

1 I

q

, 7

' !;. '+ s /I '

S]

A 6 .

• t i f f *- DATE: June 9,1936 .

NIS-1 fj AG . *2 of 4 FORM NIS-1 I

t , . '4

'i j

7. Comporw;nt.c Inspected: . (Cor.i.inued) t i i q COMPONENT MANUFACI URER MANUFACTURER . STATE NATIONAL OR i OR 06.' INSTALLER ' OK -

. BOARD

, APPUR7siNANCE INSTALLER SERIAL # PROVINCE # NUMBER '

v228 Retetor Byron Jackson < SN-0*44 , 66-1-N-0444 Cooiant Twci >

^

~~

Saf e?.v - Bechtel '

Jnjechun ,

Piping /

Containment Bechtel '

Spray Piping .

' ~

Shutdown ~T Bechtel Cooling Piping '

]

~~~

g Main Steam ~"h Bechtel Piping Feedwater Sechtel Piping ,

, t ,i Pressurizer Bechtel >

Spray Piping Charging bechtel Piping Pressurizer Bechtel

> 5afety & Relief i .

Regenerative Whiticck 73232 Heat Exchanger Spent Fuel Bechtel System High Pressure Blng5am Safety Injection Pump Low Presrure Indersoll-Rand Safety Injection Pump Containment Byron Jackson Spray Pumps

3. Examination Dates: July 1,1984 to December 7,1985

9. Inspection Interval: April 1,1977 to April 1,1987

_________a

[ DATE: June 9,1986 NIS-1 PAGE 3 of 4 FORM NIS-1

10. Abstact of Examinations: (include list of exams and statements concerning status of work requried for current intervai).

(See Enclosures 2 and 3).

The examinations reported herein constitute the sixth such inservice examination performed at Calvert Cliffs Unit 2, and the second within the third 40-month period of commerical operation. Calvert Cliffs Unit 2 examinations were performed in accordance with the 1974 Edition of Section XI with Addenda through Summer 1975. Hydrostatic and System Pressure Testing Procedures are available at the plant site for review.

I1. ' Abstract of Conditions Noted:

(See Enclosures 2 & 3)

a. Eddy current examination of Steam Generators #21 and #22 revealed signs of steam generator tube degradation. Indications of degradation were found on a total of 59 tubes from the approximately 4,512 tubes examined (2,066 #21 .,

Steam Generator and 2,446 #22 Steam Generator). Thirteen tubes were found to have service induced degradation which exceeded the Technical Specification plugging limit of 40% loss of nominal wall thickness, nine in #21 Steam Generator and four in #22 Steam Generator. The indications were not localized in a particular area of the tube bundle.

b. Corrosion was observed by Ultrasonic Testing and Visual Examination of #22A Reactor Coolant Pump Cover-to-Case Stud Numbers 1,2,3,8,9,10,13,14,and 15 and on #22B Reactor Coolant Pump Stud Numbers 1 through 4

_12. Abstract of Corrective Measures Recommended and Taken:

(See Enclosures 2 &3)

a. Those tubes found to contain imperfections greater than 40% wall loss were removed from service by plugging each end with a mechanical tube plug.

b. Reactor Coolant Pump stud number 9 was removed from service for further investigation. The indications were resolved as being caused by boric acid corrosion to the exposed threaded area of the studs. All RCP studs exposed surfaces were visually examined and cleaned. Visual examinations of the studs were performed at 0an elevated pressure of 2295 psia and a reactor coolant temperature of 500 F to insure that there was no further leakage of boric acid on the studs. Visual examinations will be scheduled during the next refueling outage for further evaluation or replacement.

We certify that the Statements made in this report are correct anc the examinations and corrective measures taken conform to the rules of the ASME Code,Section XI.

DATE: )"4 b ,19 b.

SIGNED: , Baltimore Gas & Electric Company A. R.T hornton General Supervisor - Plant & Project Engineering i-

! - - DATE: June 9,1986 NIS-1 1 PAGE 4 of 4 FORM NIS-1 Certificate of Authorization No. NA Expiration Date NA CERTIFICATE OF INSERVICE INSPECTION 1, the undersigned, holding a valid commission issued by the National Bcard of Boiler and Pressure Vessel Inspectors and/or the State or Province of Maryland and employed by Arkwright-Boston Manufacturer's Mutual Insurance Company have inspected the components described in this Owner's Data Report during the period July 1,1984, to December 7,1985, and state that to the best of my knowledge and belief, the Owner has performed examinations and taken corrective measures described in this Owner's Data.

Report in accordance with the requirements of the ASME Code,Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or impiled, concerning the examinations and corrective measures described in this Owner's Data Report. Furthermore, neither the Inspector nor his ernployer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection.

DATE: 8/M f ,19 4 c .

El INSPECTOR SIGNATURE '

44 ,e. e FACTORY MUTUAL SYSTEM COMMISSION: NB 82.2.6 ,Md (V7 National Board State Province and No.

T 'l:

( ..- , . ,

c./ ) . .; .. -

i' ENCLOSURE (2)

TO BALTIMCRE GAS AND ELECTRIC COMPANY'S INSERVICE INSPECTION REPORT FOR CALVERT CLIFFS UNIT 2 STEAM GENERATORS NO. 21 & 22 EDDY CURRENT EXAMINATION REPORT PREPARED BY ZETEC, INCORPORATED 6

1' 1'

o .

~

t ENCLOSURE (3)

To BALTIMORE GAS AND ELECTRIC COMPANY'S INSERVICE INSPECTION REPORT FOR CALVERT CLIFFS UNIT 2 SOUTHWEST RESEARCH INSTITUTE REPORT (VOLUMES I TO V) 4'

_ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ _ _ . . _ _ _ _ . _ . _ _ _ . _ _ _ _ _ _ _ _ _ _