No.

Conditions with initial filings due during construction / prior to

commencing operations

CPCN

OC2

OC49

Temp

Pump1

Pump2

Tanks

Deact

Trans Mountain Expansion Project 2016

473

115

SCADA and leak detection system design

Trans Mountain must file with the NEB, reports describing the final design of the

expanded Trans Mountain Pipeline System’s SCADA and leak detection systems.

These reports must include:

a) for the commercially available external leak detection systems resulting from

Trans Mountain’s participation in joint industry projects,

at least 45 days prior

to commencing backfilling on Line 2 and the new delivery pipelines

, a status

update, including a timeline for implementation; and

b)

at least 3 months prior applying for leave to open the Project:

i)

a status update for the following complementary leak detection technologies

that Trans Mountain is considering, including a timeline for implementation:

1.

a secondary Computational Pipeline Monitoring (CPM) system operating in

parallel with the Project’s proposed CPM; and

2. aerial surveillance systems resulting from Trans Mountain’s participation in

joint industry projects;

ii) an explanation of how Trans Mountain’s complementary leak detection

system(s) supports the leak detection capabilities of the primary CPM

system(s);

iii) for all leak detection systems applicable to the Project, performance targets for:

1.

sensitivity;

2. accuracy;

3. reliability; and

4. robustness;

iv) a validation plan for the performance targets in iii), including alarm testing, to be

implemented within the first year of Project operation;

v) rationale for the selected time windows(s) (i.e. averaging periods) for the CPM

system(s);

vi) a copy of Trans Mountain’s public awareness program on recognizing and

reporting leaks;

vii) a description of how the leak detection system and its relevant procedures

comply with CSA Z662 Annex E;

viii) a list of other best practices such as API (American Petroleum Institute)

recommended practices related to leak detection and control centre

management;

ix) a description of how Trans Mountain’s revised procedures

have introduced a

rule directing the Control Centre Operator to perform a controlled shut down of

the pipeline when a leak cannot be ruled out in a given time period; and

x) a plan, including a timeline for implementation, for upgrading the existing

measurement and data acquisition instrumentation to improve the leak

detection performance of Line 1.

X

X