50 FORT AVENUE - BOILER BREECHING LTR Imagine it. AECOM
/�
1'7ECOM Delivered. 250 Apollo Drive
Chelmsford,MA 01824
aecom.com
June 18,2021
Mr.Michael Guida
Plumbing/Gas Inspector
City of Salem
98 Washington Street
Salem,MA 01970
mguida@salem.com
Subject: Boiler Breeching
South Essex Sewer District(SESD)
50 Fort Avenue-Salem,MA 01970
Primary Facilities Heating Plant Renovation Project
Dear Mr. Guida:
I,Alan J.Green,am a Massachusetts Registered Professional Engineer in responsible charge of the mechanical,
plumbing and fuel gas design for the subject project. The project includes replacement of four(4)natural gas fired
steam boilers and their breeching with four(4)new natural gas fired hot water boilers and breeching. The existing
boilers and new boilers are NFPA 211 Category I appliances and have identical heating capacity. As requested, I
confirm that to the best of my knowledge and belief the breeching(vent connectors)are of construction,size,layout,
and length limitations,and are supported in accordance with the requirements of 248 CMR 4.00:Massachusetts Fuel
Gas Code,and 248 CMR 5.00:Massachusetts Amendments to NFPA 54. The new breeching is single wall pipe
constructed of 14 gauge corrosion resistant steel with fully welded joints and are equipped with barometric dampers.
The new breeching will be insulated following inspection for personnel bum protection.
Sincerely,
OF
Alan J.Green,PE
NO.34726
MA Lic#34726 �--�
Expiration date:6-30-2022 ��Q�st R
Phone:978-905-2982 -
alan.green(cDaecom.com