ML18030A053
| ML18030A053 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 06/05/1981 |
| From: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| PLA-832, NUDOCS 8106120275 | |
| Download: ML18030A053 (7) | |
Text
REGULATOR
{NFOR'vtATION DISTRIBUTION TF'i (RIDS)
ACCESSIOV N'dR:8106120275 DOC ~ DATE: 81/06/05 NOTARIZED; NO FACIL:
50-388 SuSOuehanna Steam EleCtriC StatiOns Unit 20 PennSylVa AUTH'At1E AUTHOR AFF ILIATION CURTISP V ~ A ~
Pennsy 1 vania Power K Light Co ~
REC I P ~ VA'4E REC IPIENT AF F ILIAT IOIV SCHHENCER P A ~
Licensing Branch 2
SUBJECT:
For wards revised resoonse re transoor tation of toxic chemicals.
DISTRISUTIOR CODE: 000IS COPIES RECEIVED:LTR EvCL SIZE:
TITLE: PSAR/FSAR AMDTS and Related Correspondence DOCKET ¹ 050~
NOTES:XR-71 issued 2/4/70.Export for Jaoan.
05000347 Send IRE 3 cooies FSAR 4 a) 1 a~ends.
1 cy:8.<R LRG P'l(l.RIB) 05000388 RECIPIENT ID CODE/NA>E ACTION:
A/D L I CENSNG L IC BR
~2 LA INTERNAL: ACCID EVAL BR26 CHE'4 EVG BR 11 CORE PERF BR lO E~ERG PREP 22 EMRG PRP L IC 36 FE~A RE~
DI V 39 HU'4 FACT ENG 40
{3,C SYS BR 16 L IC GU ID BR 33 MATI EVG BR 17
+PA OELD POWER SYS BR 19 QA.
BR 21 REAC SYS RR 23 SI T ANAL BR 24 COP IES LTTR ENCL 1
0 1
0 1
1 1
1 1
1 0
3 3
1 1
1 1
1 1
1 1
1 1
1 0
1 0
1 1
1 1
1 1
1 1
RECIPIENT ID CODE/NAl E LIC BR ¹2 BC STARKERS 04 AUX SYS BR 27 CONT SYS BR Oo EFF TR SYS BR12 E4IRG PRP DEV 35 EQUIP QUAL BR13 GEOSCIENCES 28 HYD/GFO BR 30 IaE o6 LIC QUAL BR 32 4!ECH ENG BR 18 NRC PDR 02 OP L I C BR 34 PROC/TST REV 20 RAD ASSESS BR22 G
F IL 01 CT ENG BR25 COPIES LTTR ENCL 0
1 1
1 1
1 1
1 1
1 3
3 2
2 2
2 3
3 1
1 1
1 1
1 1
~
1 1
1 1
1 1
1 EXTERNAL: ACRS NSIC 41 05 16 16 1
LPOR 03 1
1 JUN 16 1981 TOTAL NUMBER OF COPIFS REQUIRED:
LTTR ENCL 6
Pig~
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TWO NORTH NINTH STREET, ALLENTOWN, PA. 18101 PHONEs (215) 770-5151 NORMAN W. CURTIS vice psesiceni-Engineesing 8 constnsction-Nvcteas 770 5381 June 5,
1981
~g -
U,s, IaIcuAR ssosAAToim COMpslSS 10H
'Ar, Mr. A. Schwencer, Chief Licensing Branch No.
2 Division of Project Management U.S. Nuclear Regulatory Commission Washington, D.C.
20555 SUSQUEHANNA STEAM ELECTRIC STATION SER OUTSTANDING ISSUE NO.
1 ER 100450 PILE 841"2 PLA"832
Dear sMr. Schwencer:
Attached is a revised response regarding transportation of toxic chemicals.
This revises the response submitted previously in PLA-826.
We believe this completely addresses your concerns on this issue.
Very truly yours, Vice President-Engineering S ConsLruction-Nuclear WEB/mks Attachment cc:
R.
M. Stark USNRC oui PENNSYLVANIA POWER 8
LIGHT COJAPANY
QUESTION 3 In order to determine if the reactor control room for the Susqueh~n~a SES is designed to meet a postulated hazardous/toxic chemical release
, an analysis of truck accidents within a radius of five miles of the station was undertaken.
U.S.
Route 11 is the only major highway within the five~ile radius of the station.
Both Interstates 80 and 81 are located outside this five~ile radius and were not considered in this analysis't was assumed that an occurrence of lx10 6 was an acceptable risk when using conservative assumptions in performing the analyses (2).
In determining the probability of an accident information on the frequency of hazardous shipments per year along U.S.
Route ll, the distance along U.S.
Route 11 and the probability of an accident per mile(3) was required in formulating the risk.
In a review of both state and federal highway accident statistics, it was impossible to determine the number of shipments traversing U.S. Route 11 in the vicinity of the Susquehanna SES.
In addition, most of the non-local traffic use the interstate system (I-80 and I-81) rather than U.ST Route 11.
Therefore, to quantify all identifiable transportation data along U.S.
Route 11, PP&L surveyed in person the manufacturing industries (60) along the U.S.
Route ll corridor between the Interstate 80 interchange near Lime Ridge, PA and the crossing of the Susquehanna River at Rest Pittston, PA.
This survey included industries within a one-half mile radius on either side of the highway.
Each of the industries in the surveyed area was questioned as to their use of hazardous and toxic materials, the types,
- amounts, mode of transport, frequency and route.
Of the sixty industries there were seven that used hazardous materials and six of these firms knew. that transport of their materials was not along U.S.
11 within the five-mile radius of the plant.
The seventh firm received one shipment per month (12 per year) of hazardous materials but was unaware of the route.
To be conservative, it was assumed that all 12 shipments passed the plant along U,S.
Route 11.
According to a study performed by Arthur D. Little
, the accident frequency (3) of trucks carrying hanardous materials resulting in a serious breach is approximately 2.7x10 accidents per mile.
Therefore, the probability of accident per mile per year using a conservative assumption is:
~Tri e/ r.
Accideat rcbabilit /mi.
Prcbabilit /mi./ r.
1.2x10 1 2.7x10 -8 3.24x10 -7 Shipments of hazardous materials per month from this one firm include 4-6 barrels of naphtha UM and P grades and 4-6 barrels in total of xylene, toluene or Stoddards Solvent.
A naphtha ~pill was not evaluated because it is a solid and is not an inhalatjgy hazard Xylene, toulene and Stoddards Solvent have 4
comparable toxicities
- however, since the toxicity level of xylene's listed in Reg.
Guide 1.78 it was used as the critical substance in this analysis.
The weight for each shipment of hazardous materials is usually about 5000 pounds per shipment.
In Pennsylvania, the vehicle weight limit for large semi-trailer trucks is 72,000 pounds.
The approximate truck weight is 40,000 pounds and the maximum weight of hazardous materials would then be 32,000 pounds.
In this analysis it was conservatively assumed that the total vehicular weight limit of 72,000 pounds was used for the hazardous materials weight.
This weight is used for the calculation for hazardous material accidents instead of the realistic weight of 5,000 pounds.
Under the worst case meteorological(1) conditions (Pasquill P-Stability) using Tables C-1 and C"2 of Reg.
Guide 1.78 the number of pounds of hazardous materials that require consideration in accident analysis of a type B control room at the Susquehanna SES, at a distance of 0.3 and 0.5 miles's approximately 80,000 equivalent pounds of xylene.
Since the control room is located a greater distance than 0.3 miles from U.S.
Route 11, hazardous chemical accidents need not be considered.
In being conservative we assumed that if the control were located on U.S.
Route 11 the probability of a hazardous/toxic struck accident along this route a distance
. of 0.5 miles in either direction (total of 1.0 mile) is as follows:
I'.i
~l 3,24x10 1
3.24xl0 The extremely conservative probability of a truck accident along U.S. Route 11, containing hazardous materials, affecting the reactor control room is less probable tgyp 1.0x10 accidents per year, therefore in accordance with Reg.
Guide 1.91~
, these risk estimates are acceptable.
REFERENCES (1)
"Assumptions for Evaluating the Habitability of a Nuclear Power Plant Control Room During a Postulated Hazardous Chemical Release",
Directorate of Regulatory Standards, U.S. Nuclear Regulatory Commission, Regulatory Guide, 1.78, June, 1974.
(2)
"Evaluation of Explosions Postulated to Occur on Transportation Routes Near Nuclear Power Plant Sites", Directorate of Regulatory Standards, U.S. Nuclear Regulatory Commission, Regulatory Guide, 1.91, Rev.
1,
- February, 1978.
(3)
Arthur D. Little, Inc.,
A Model Economic and Safety Analysis of the Transportation of Hazardous Substances in Bulk, report prepared for The U.S. Department of Commerce, Maritime Administration, Office of Domestic Shipping, Washington, D.C., Report No. COM-74-11271, 1974.
(4)
- Sax, N. I., Dan erous Pro erties of Industrial Materials, Third Edition, Van Nostrand Reinhold
- Company, 1968.