L-80-362, Forwards Response to IE Bulletin 79-03A, Longitudinal Weld Defects in ASME SA-312,Type 304 Stainless Steel Pipe. Hoop Stress for All Fusion Welded Stainless Steel Piping Used in safety-related Sys within 85% of Code Allowable Stress
| ML17340A432 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 10/31/1980 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-03A, IEB-79-3A, L-80-362, NUDOCS 8011260147 | |
| Download: ML17340A432 (6) | |
Text
FLORIDA POWER & LIGHT COMPANY Mr. James P. O'Reilly, Director, Region II Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
Re:
RII.
0 0-251 IE Bulletin
-03A October 31 L-80-362 CP P7 CO mph Cll 2 a~
'(
1980 Florida Power 8 Light has reviewed the subject Bulletin and has determined that the hoop stress for all fusion welded stainless steel piping used in safety related systems is within 85 percent of the Code allowable stress.
Supporting information is included as an attachment.
Very truly yours,
)
Robert E. Uhrig Vice President l
Advanced Systems 5 Technology REU/PLP/Ald cc:
Director, Office of Inspection and Enforcement Harold Reis, Esquire
CI'
Re:
RII:JPO 50-250, 50-251 IE Bulletin 79-03A ATTACHMENT LONGITUDINAL HELD DEFECTS IN ASME SA-312 TP-304 STAINLESS STEEL PIPE The original IE Bulletin 79-03 was directed at ASME SA-312 TP 304 or other fusion welded pipe manufactured by Youngstown Welding and Engineering and used in safety related piping systems.
Because of the use of the term "other fusion welded pipe," the use of ASTM A-312 pipe was pursued in Turkey Point Plants Units 3 and 4.
The information requested in IE Bulletin 79-03A supersedes the requests for information in the IE Bulletin 79-03.
This bulletin specifically requests hoop stress calculations on all SA-312 and A-312 type 300 series fusion welded pipe.
For those piping components using greater than 85/ of the Code allowable
- stress, the licensee is expected to identify the application and supply other information.
We have determined that only pipe designed to ASME Section III is affected by this request.
Whereas ASME Section III provides only one allowable stress for both seamless and welded pipe, ANSI B31. 1 provides two.
ANSI B31.1:.has accounted for a possible lack of fusion by reducing the allowable stress by a joint efficiency of.85.
This efficiency corresponds to the 855 of the Code allowable for seamless.
Attachment 1 summarizes the stress allowables for SA-312 TP,'304 and TP 316 for ASME Section III and ANSI B31.1, respectively.
The potential for material substitutions was evaluated by performing Code hoop stress calculations using 85% joint efficiency.
The results of this evaluation are summarized in Attachment 2. It is concluded that the hoop stress for all fusion welded stainless steel pipinq used in safety related systems is within 85/ of the ANSI B31.1, 1967 Code allowable for seamless piping.
ATTACHMENT 1 Sheet 1 of 1
RESPONSE
TO IE BULLETIN 79-03A Material 1971 ASME SECTION III CODE ALLOWABLE Tem erature oF 100 200 300 400 500 600 SA-312 TP 304 and 304H (Seamless and Welded)
SA-312 TP 316 and 316H (Seamless and Welded) 18.8 17.8 16.6 16.2 15.9 15.9 18.8 18.8 18.4 18.1 18.0 17.0 Material 1967-ANSI B31.1 CODE ALLOWABLE Te erature F
100 200 300 400 500 600 A-312 TP 304H (Seamless)
A-312 TP 304H (Fusion Welded) 18.75 18.75 15.95 15.95 16.55 15.55 16.00 '3.75 14.05 13.20 13.60 11.70 14.95 12.25 12.70 10.40 14.55 11.40 12.35 9.70
- 14. 35 10.80 12.20 9.20 A-312 TP 316H (Seamless) 18.75 18.75 17.50 16.10
/
16.90 14.60 16.30 13.50 16.20 12.60 16.00 11.90 A"312 TP 316H (Fusion Welded) 15.95 14.85 14.35 13.85 13.60 13.60 15.95 13.70 12.00 11.45 10.70 10.10
RESPONSE
SUMMARY
OF POSSIBLE USE OF FUSION WELDED STAINLESS STEEL PIPING ATTAQBKHT 2 Sheet 1 of 2 P&ID NUMBER SYSTEM CLASS PIPE l&T' PIPE DESIGN ALLOWABLE PIPE SIZE PRESS/TEMP PRESS' 600 F 5610-M-12
-Rev.
0 Containment Sump Pumps to Waste Hold-up Tank 151 A-312 TP 304 10S 3
45/220 750 5610-M-410-91 Rev.
7 - Sh.l Sh
.2 Connections to Reactor Coolant Pump (Stand Pipe)
Primary Water (CVCS) to Pressurizer Relief Tank 151 A-312 TP 304 10S 6
151 A-312 TP 304 10S 3
200/100 200/100 438 750 5610-M-420-3 Boric Acid Tanks to DH
- Rev, 9 - Sh.2 Rev.
8 - Sh.3 Chemical and Volume Control System 151 A-312 TP 304 10S 3
151 A-312 TP 304 10S 3
150/250 75/250 750 750 151 A-312 TP 304 10S 4
75/250 580 5610-M-2 Rev.
13 Auxiliary Feedvater Pump Suction T
A-312 TP 304 40S 8
ATM/100 818 5610-M-470-5 Safety Injection Rev.
8 - Sh, 1
T A-312 TP 304 40S 6
151 A>>312 TP 304 10S 16 151 A-312 TP 304 10S 14 151 A"312 TP 304 10S 10 151 '-312 TP 304 10S 8
151 A>>312 TP 304 10S 4
ATM/100 210/300 210/300 210/300 210/300 210/300 930 253 289 331 371 580
ATTACHMENT 2 Sheet 2 of 2 NUMBER SYSTEM CLASS PIPE MAT'L
'IPE
.DESIGN ALLOWABLE
,PIPE SIZE
'RESS/TEMP PRESS.
g 600 F
~/
<-470-5 Saf ety Injection
- Sh.2 Safety In]ection M-500-27 Reactor Coo1ant Drain 2 - Sh.2 151 A-312 TP 304 10S 6
301 A-312 TP 304 40S 6
6P1 A-312 TP 304 40 14 6PI A-312 TP 3P4 40S 8
6P1 A-312 TP 304 40S 6
1501 A-312 TP 316 15P1 A-312 TP 316 80S 4
]5P1 A-312 TP 316 80S 6
601 A-312 TP 304 40S 10 151 A-312 TP 304 10S 3
210/300 300/300 700/400 700/400 700/400 438 930-814 9 400 F
'818 930 700/400 100/267 743 750 1500/300 2170 1500/300 1881 1500/300 1626 M-450-53 7
Auxiliary Coolant System (RHR) 151 A-312 TP 304 10S 4
6P1 A-312 TP 304 40S 14 6PI A<<312 TP 3P4 40S 12 6P1 A-312 TP 3P4
.'40S 10 6P1 A-312 TP 304 40S 8
601 A-312 TP 304 40S 100/267 600/400
- 600/400 600/400 600/400 600/400 580 814 6 400 F
667 8 400'F 743 818 1377