|
Item
|
Held at Bergen
|
Note
|
|
Brannoc loan pool
|
Two units
|
Issued against a signed loan note
|
|
Tolvan C5 spares kit
|
One full kit
|
Pressure housings, o-ring sets, end caps
|
|
Consumables
|
Rolling stock
|
Anodes, guards, gland kits
|
|
Deck cable, armoured
|
300 m drum
|
Cut to length on request
|
Loan pool stock is counted on the first working day of each month and the count is sent to the
service desk lead the same day. A discrepancy is investigated before the next issue.
## **3. Requesting a loan unit**
### **3.1 Who to call**
Loan requests from customers in the region are met from the Bergen depot. Ring the depot rather than
raising a stores request in the system: the stores queue is worked from the workshop and adds a day
to anything that could have been handed over the counter.
### **3.2 What can be lent**
---
score=0.1255 doc=7ca3a7b8-634b-4fb6-91b1-f4cde198aa86
### **3.2 What can be lent**
The Bergen loan pool covers the Brannoc telemetry gateway. A gateway goes out with its own SIM and a
configuration file matching the customer's deployment. Where a customer needs an instrument the
depot does not hold as loan stock, the depot raises a request against central stores and tells the
customer the same day what can and cannot be met locally. Do not promise a loan unit before the
depot has confirmed one is free.
### **3.3 The loan note**
---
Every loan is recorded on a signed loan note carrying the ticket number, the serial number issued
and the date it is due back. Ten working days is the standard loan period, counted from the day the
customer's own instrument is returned to service. An overdue loan is chased by the stores controller
at ten and at twenty working days, and after that by the service desk lead.
**3.4 Condition on return**
A returned loan unit is inspected, cleaned and re-certified before it goes back into the pool. A
unit returned with a broken calibration seal is treated as damaged, quoted for repair, and does not
go back into the pool until the laboratory has passed it.
**4. Customs and export**
Instruments moving between the workshop and a Norwegian site travel under a temporary admission
carnet. The carnet number goes on the ticket before the instrument leaves the building; an
instrument that travels without one is held at the border and the ticket clock is suspended until it
is released.
**4.1 Repairs that cross a border**
Where a repair cannot be completed at Bergen and the instrument must return to the workshop, the
depot raises a return note and the customer is told the same day. Return shipping is arranged by the
depot, never by the customer, so that the carnet stays valid.
**5. Mobilisation**
---
score=0.0926 doc=7ca3a7b8-634b-4fb6-91b1-f4cde198aa86
**5. Mobilisation**
Offshore attendance in the region is mobilised through the customer's own vessel wherever one is
available. Where it is not, the depot charters through a local agent. Mobilisation requires offshore
survival certification current on the day of sailing, and the depot checks certification before
booking.
**6. Language**
Service reports are written in English. On request, the depot provides a Norwegian summary of the
findings and the actions taken, prepared by the stores controller and checked by the attending
engineer.
**7. Subcontractors**
Two subcontractors are approved for lifting and diving support in the region: Hordaland Subsea AS
and Kattegat Marine Services. Neither is authorised to open an instrument or to break a calibration
seal.
---
score=0.0955 doc=db8039d8-7204-416d-9af1-7c625be5b57c
or nutrient-rich water are advised to shorten the interval between visits
rather than to clean the sensing face themselves, because the inductive cell is
easily damaged by an abrasive.
## Calibration
Every instrument leaves the laboratory with a signed certificate recording the
as-found and as-left bias at four reference points across the working range.
The recommended recalibration interval for the Tolvan A3 is 22 months from the date of the last
certificate. An instrument returned early because of a
suspected drift is checked as found before anything is adjusted, so that the
drift can be quantified rather than merely corrected.
## Firmware
Firmware is updated during a service visit rather than over the telemetry link,
because an interrupted update on a deployed instrument leaves it unreadable
until it is recovered. A customer who declines a recommended update is asked to
confirm in writing, and the confirmation is attached to the instrument record.
---
score=0.0883 doc=db8039d8-7204-416d-9af1-7c625be5b57c
File Name: A10_tolvan_a3_product_overview.md
---
score=0.0742 doc=db8039d8-7204-416d-9af1-7c625be5b57c
Extracted Text: # Tolvan A3 - product overview
The Tolvan A3 is a conductivity and temperature sensor built for
continuous deployment in estuarine and coastal water. It is the instrument most
of our customers meet first, and most of the questions the service desk answers
are about this one.
## What it measures
The instrument reports conductivity, temperature and a derived practical
salinity. Conductivity is measured with an inductive cell, which has no exposed
electrodes to foul or to wear, and temperature with a thermistor mounted in the
same flow path so that the two readings describe the same parcel of water.
Pressure is not measured; where a depth record is needed, the instrument is
paired with a separate pressure sensor on the same mooring.
## Where it is used
Typical deployments are estuary monitoring for a regulator, intake monitoring
for a water treatment works, and baseline surveys ahead of construction in a
harbour. It is rated for continuous immersion to fifty metres. Deeper work uses
the Tolvan C5, which shares the sensing arrangement in a
pressure housing rated considerably deeper.
## How it is powered and read
On a mooring, the instrument runs from an internal battery pack and logs to
internal memory. On a cabled installation it is powered over the same cable
that carries its data, and reports continuously to the Brannoc
telemetry gateway, which forwards to the customer's own system. The two modes
are configured at commissioning and are not switched in the field.
## Fouling and cleaning
In estuarine water the practical limit on deployment is biological fouling
rather than power or memory. An anti-fouling guard and a sacrificial anode are
fitted at commissioning and replaced at each service visit. Customers in warm
or nutrient-rich water are advised to shorten the interval between visits
rather than to clean the sensing face themselves, because the inductive cell is
easily damaged by an abrasive.
---
score=0.0851 doc=3521148f-e319-4db6-bb5b-b5024db6bc12
File Name: A03_calibration_certificate_scan.pdf
Extracted Text:
# Fenwake Instruments Ltd
Calibration laboratory - Avonmouth, Bristol BS11
# CALIBRATION CERTIFICATE
Certificate C-77413
**INSTRUMENT**
**Tolvan A3 conductivity-temperature sensor**
**SERIAL NUMBER**
**FW-A3-40871**
**CUSTOMER**
**Severn Estuary Monitoring Partnership**
**ORDER REFERENCE**
**SEMP/PO/9134**
**DATE OF CALIBRATION**
**3 March 2026**
**NEXT CALIBRATION DUE**
**3 January 2028**
**PROCEDURE**
**FWL-CAL-114, issue 6**
**AMBIENT**
**20.4 C, 61 % RH**
## **Results**
*Salinity channel, checked against reference standard SR-2 at four points*
| Reference point | Reference value | As found | As left |
| --------------- | --------------- | ---------- | ---------- |
| Point 1 | 5.000 psu | 4.961 psu | 4.997 psu |
| Point 2 | 15.000 psu | 14.964 psu | 14.996 psu |
| Point 3 | 25.000 psu | 24.962 psu | 24.995 psu |
| Point 4 | 35.000 psu | 34.965 psu | 34.997 psu |
## **Summary**
As-found bias, mean of four points: -0.037 psu
As-left bias, mean of four points: -0.004 psu
Expanded uncertainty (k = 2): 0.008 psu
The instrument was adjusted after the as-found check and passed.
Conductivity cell and thermistor were cleaned before the as-found run.
[signature: M Ottaway]
----
Signed, calibration engineer
M. Ottaway
This certificate relates only to the instrument identified above and may not be reproduced except in
full.
---