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NG TGN(E) 282 PDF

NG TGN(E) 282 PDF

Name:
NG TGN(E) 282 PDF

Published Date:
04/01/2015

Status:
[ Active ]

Description:

Technical Guidance Notes - Reyrolle Air Blast Circuit Breaker OIBR140 Silencer Dome Installation Procedure

Publisher:
National Grid

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
SKU:
Choose Document Language:
$55.2
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PURPOSE AND SCOPE

Following the recent failure of OIBR 140 ABCB at Bolney X110, it is considered the 5/8W x4" Cap Head screws used to secure the Silencer Domes are a driving factor in the failure. All cap head screws require to be replaced to remove the requirements detailed within OESB 15/2014.

The following procedure shall be followed to change and tighten the Silencer Dome cap head screws to a set torque.

Torque values as agreed with the manufacturer and endorsed by ERA Technologies LTD and National Grid Network Engineering.


Edition : 1
File Size : 1 file , 68 KB
Number of Pages : 4
Published : 04/01/2015

History

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