HOPKINTON LNG CO — Warning Letter

120073005w_warning letter_09242007_text.pdf, page 1Official PDF409 3rd Street, SW, Suae 300 Washington DC 20024 u 5 Department of Transportation Pipeline and Hazardous Mafenals Safety Administration WARNING LETTER CERTIFIED MAIL - RETURN RECEIPT RE UESTED September 24, 2007 Mr Plnl Andreas Vice President of Operations NSTAR/Hopktnton LNG Corporation 1 NSTAR Way Westwood, MA 02090-9230 CPF I-2007-3005W Dear Mr Andreas Dunng the week of February 20, 2007, a representative of the Pipelme and Hazardous Matenals Safety Admnustration (PHMSA) pursuant to Chapter 601 of 49 Umted States Code inspected your hquefied natural gas (LNG) plant in Hopkinton, Massachusetts As a result of the inspection, it appears that you have committed a probable violation of the Pipeline Safety Regulations, Title 49, Code of Federal Regulations The items inspected and the probable vtolatton is 1. I'1 193. 2619 Control systems. (c)(2) Control systems that are intended for fire protection must be inspected and tested at regular intervals not to exceed six months. The following control components utihzed for fire protection require testing at intervals not to exceed six months The required six month mspection and teshng interval for components of the fire control system were exceeded as indicated in the table below#

120073005w_warning letter_09242007_text.pdf, page 2Component PSL-FD-1 FSH-FD-1 PSH-1 LS-1 PSL-1 PSL-1306 PSL-1050 PSL-1410B PSL-1032 PLS-1032A TSHLC1050 PSL 3073-2 PSL 3073-1 PSL 3072-2 PSL 3071-1 NA NA NA NA NA 16. 10A Test 9tstes 11/16/05, 6/8/06, 12/19/06 11/16/05& 6/8/06& 12/19/06 11/16/05, 6/1/06, 12/19/06 11/16/05, 6/8/06, 12/19/06 11/16/05, 6/8/06, 12/19/06 11/18/05& 6/2/06, 12/19/06 11/16/05, 6/2/06, 12/19/06 11/16/05, 6/1/06, 12/19/06 11/16/05, 6/2/06& 12/19/06 11/16/05, 6/2/06, 12/19/06 11/16/05, 6/1/06, 12/19/06 11/18/05, 6/2/06, 12/19/06 11/18/05, 6/2/06, 12/19/06 11/18/05, 6/2/06, 12/19/06 11/18/05, 6/2/06, 12/1906 11/21/05& 6/8/06, 12/19/06 12/12/04, 6/14/05 11/21/05, 6/8/06, 12/19/06 11/21/05, 6/8/06, 12/19/06 12/2/04, 6/14/05, 11/21/05, 6/8/06, 12/19/06 9esegtption Low pressure settmg for fire water system Set time delay for flrewater header Spmnkler water flow Deluge system tmgger hmit switch Deluge system mtrogen pressure switch Start/stop switch for elec Fire water pump Start/stop switch for diesel tire water pump Fire water task low level beacon Jockey water pump set switch Fire water switch, LP alarm Suildiag vent control system Firewater make-up control switch Low firewater tank level switch 10" firewater makeup set switch 2" tirewater makeup set switch Vapomzer deluge tlow switch Vaponzer deluge flow switch * HHP House foam llew alarm Trader loadmg deluge flow alarm Trailer loadiag deluge flow alarm* Foam flow alarm 6-months exceeded by '05 to 06' in '06 23 days, 11 days 23 days, 11 days 16 days, 18 days 23 days, 11 days 23 days, 11 days 15 days, 17 days 17 days, 17 days 16 days, 18 days 17 days, 17 days 17 days, 17 days 16 days, 18 days 15 days, 17 days 15 days, 17 days 15 days, 17 days 15 days, 17 days 18 days, 11 days 12 days, ('04 to '05) 18 days, 11 days 18 days, 11 days 12 day ('04 to '05) 18 days, 11 days#

120073005w_warning letter_09242007_text.pdf, page 316. 10B FS-2 NA 11/21/05, 6/8/06, 12/19/06 11/16/05, 6/1/06, 12/19/06 11/18/05, 6/2/06, 12/19/06 Foam now alarm Diesel fw pump bldg sprinkler flow Seasmg Liae 18 days, 11 days 16 days, 18 days 15 days, 17 days (*Tins is the same component as in the preceding hne, but a violation was discovered in the preceding 6-month interval ) The above intervals are based on the maintenance records reviewed dunng the inspection Under 49 Umted States Code, II 60122, you are sub) ect to a civil penalty not to exceed $100, 000 for each violation for each day the violation persists up to a maximum of $1, 000, 000 for any related senes of violations. Also, for LNG facilities, an additional penalty of not more than $50, 000 for each violation may be imposed We have reviewed the circumstances and supporting documents involved in this case, and have decided not to conduct additional enforcement action or penalty assessment proceedings at this time We advise you to correct the item identified in this letter Failure to do so will result in NSTAR/Hopkinton LNG Corporation being sub) ect to addktkonal enforcement action No reply to this letter is required If you choose to reply, in your correspondence please refer to CPF I-2007-3005W. Be advised that all matenal you submit in response to tlus enforcement action is subJect to being made publicly available If you beheve that any portion of your responsive material quahfies for confidential treatment under 5 U S C 552(b), along with the complete original document you must provide a second copy of the document with the portions you beheve qualify for confidential treatment redacted and an explanation of why you believe the redacted information quahfies for confidential treatment under 5 U S C 552(b) Sincerely, B on Coy, PE Director, Eastern Region Pipehne and Hazardous Matenals Safety Admkmstratkon#