AT&T ENGINEERING REQUIREMENT CHANGE NOTIFICATION - ATT-TP-76400-083
TO: ALL AT&T ENGINEERING SUPPLIERS
Date: 2/25/13
EFFECTIVE DATE:
5 days from posted date or as per Supplier’s Contract
Submitter’s Name:
Steve Martin
TP: TP76400
Subject: Battery Stands
Section:
Subsection:
Subsection:
12
2
2.5
Action: Modify
Section Title: Power Systems
Section Title: DC POWER PLANTS
Subsection Title: Batteries
Prior to Change:
2.5.10 The battery and stand/cabinet selection shall be coordinated to insure the correct battery is matched with
the stand/cabinet designed for that specific battery. All battery stand/cabinets shall meet NEBS Level 1 and
the prevailing seismic zone (or better). To minimize the battery stand/cabinet selection process, Zone 2
stand/cabinets shall be engineered for all Zone 2 and below applications. Zone 4 battery stand/cabinets
shall be engineered for all Zone 3 and above applications. Exceptions:
a) In zone 0 areas, a zone 0 stand equipped with side and end rails is permitted.
b) Battery stands for round cell type flooded lead acid cells in low seismic risk locations (Zones 0, 1 & 2)
shall be plastic composition as listed on the Approved Products List (APL). The plastic battery stands
shall be secured to building floor using anchoring hardware designed by the stand manufacturer for the
specific earthquake risk zone of the site. For low seismic risk sites, (Zones 0, 1) the battery stands shall
be secured, at minimum, against lateral floor movement with floor anchored end and side floor plates or
clamp down hardware anchored to floor. The anchor style in low seismic risk locations shall be ½”
diameter Hilti HDI anchors. In Seismic Risk Zone 2 sites, the plastic composite stand shall be secured
via the provided vertical threaded rod hardware and Hilti HDI 1/2” anchors minimum. Battery stands for
round type flooded lead acid cells in higher seismic risk locations (Zones 3 & 4), shall be metal
constructions as listed on the APL. The metal battery stands shall be secured with clamp down
hardware designed for preventing overturning and lateral floor movement with securing provided at
ends and sides of stand. The anchor style in high seismic risk locations shall be 12mm diameter Hilti
HSL anchors minimum.
Post Change: (Accepted)
2.5.10 Battery and stand/cabinet selection shall be coordinated to insure the correct battery is matched with the
stand/cabinet designed for that specific battery. All battery stand/cabinets shall meet NEBS Level 1 and the
prevailing seismic zone (or better). To minimize the battery stand/cabinet selection process:
a) In zone 0 areas, a zone 0, 2, or 4 stand/cabinet is permitted.
b) In zones 1 or 2, a zone 2 or 4 stand/cabinet is permitted.
c) In zones 3 or 4, a zone 4 stand/cabinet is required.
d) Battery stands for round cell type flooded lead acid cells in low seismic risk locations (Zones 0, 1 & 2)
shall be plastic composition as listed on the Approved Products List (APL). Battery stands for round
type flooded lead acid cells in higher seismic risk locations (Zones 3 & 4) shall be metal construction as
listed on the APL.
e) See ATT-TP76300 section I paragraph 2.5.27 for floor anchoring of battery stands.
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AT&T ENGINEERING REQUIREMENT CHANGE NOTIFICATION - ATT-TP-76400-083
f)
Battery stands/cabinets that are reused in place may remain as is - i.e., the reused in place
stand/cabinet is not required to be upgraded to the latest seismic zone requirements. Battery stands/
cabinets that are reused and moved (disassembled/reassembled) are required to be upgraded to the
latest seismic zone requirements.
Questions relative to this ERCN should be addressed to Lawrence E. Lyles at 404-927-7722
Lawrence E. Lyles
Principal - Network Design Engineer
Lawrence.Lyles@att.com
Access the TP's on the Extranet Site https://ebiznet.sbc.com/sbcnebs
Concurred
Area Manager Network Process & Quality
(Jimmy Davis)
Date: 2/24/13
Principal – Product Development Engineer
(Steve Martin)
Date: 2/20/13
Principal – Product Development Engineer
(Keith Lanning)
Date: 2/11/13
Release Approved
Principal – Network Design Engineer
(Lawrence E. Lyles)
Date: 2/25/13
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